Page 1 MULTIFUNCTIONAL DIGITAL SYSTEMS e-STUDIO350/450 File No. SME03002800 R03092140700-TTEC Ver00 2003-11...
Page 3 GENERAL PRECAUTIONS REGARDING THE INSTALLATION AND SERVICE FOR e-STUDIO350/450 The installation and service should be done by a qualified service technician. 1. Transportation / Installation • When transporting/installing the equipment, employ two persons and be sure to use the posi tions as indicated below.
Page 4 Do not allow a short circuit to occur. Do not use the parts not recommended by Toshiba TEC Corporation. 4. Cautionary Labels • During servicing, be sure to check the rating plate and the cautionary labels such as “Unplug the power cord during service”, “Hot area”, “Laser warning label”...
Page 5: Table Of Contents
5. CONTROL PANEL ......................5-1 5.1 Control Panel and Display Panel ..................5-1 5.2 Items Shown on the Display Panel ..................5-2 5.2.1 Display........................5-3 5.3 Relation between the Equipment State and Operator’s Operation ........5-8 November 2003 © TOSHIBA TEC e-STUDIO3511/4511 CONTENTS...
Page 6 8.1 General Description ......................8-1 8.2 Structure ..........................8-3 8.3 Laser Diode ........................8-7 8.4 Laser Optical Unit Cooling Fan ................... 8-8 8.5 Polygonal Motor ........................8-8 8.6 Disassembly and Replacement ..................8-9 e-STUDIO3511/4511 CONTENTS November 2003 © TOSHIBA TEC...
Page 7 12.4.4 Adjustment using the drum thermistor ..............12-7 12.5 Disassembly and Replacement ..................128 13. FUSER UNIT / PAPER EXIT SECTION ..............13-1 13.1 General Description ......................13-1 13.2 Operation ......................... 13-1 13.3 Functions .......................... 13-2 November 2003 © TOSHIBA TEC e-STUDIO3511/4511 CONTENTS...
Page 8 15.3 Output Channel ......................15-2 15.4 Fuse ..........................15-4 15.5 Configuration of Power Supply Unit ................15-5 15.6 Sequence of Power Supply ..................... 15-6 15.7 AC Wire Harness ......................15-7 16. PC BOARDS....................... 16-1 e-STUDIO3511/4511 CONTENTS November 2003 © TOSHIBA TEC...
Page 9: Specifications / Accessories / Options / Supplies
1. SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES 1.1 Specifications Values in [ ] are for e-STUDIO450 in case that the specification is different between e-STUDIO350 and e-STUDIO450. • Copy process Indirect electrophotographic process (dry) • Type Desktop type (console type:when paper feed pedestal (PFP) and large capac- ity feeder (LCF) are installed) •...
Page 10 OHP film (thickness: 80 µm or thicker) by Toshiba Tec • First copy time ....e-STUDIO350: Approx. 3.9sec. or less e-STUDIO450: Approx. 3.9sec. or less (A4/LT, upper drawer, 100%, original placed manually) • Warming-up time ....Approx. 20 seconds (temperature: 20°C) •...
Page 11 • Power consumption ... 1.5 kW or less (115V series, 200V series) The electric power is supplied to the RADF, Finisher, Job Separator, Offset Tray, PFP and LCF through the equipment. • Total counter ...... Electronical counter November 2003 © TOSHIBA TEC 1 - 3 e-STUDIO350/450 SPECIFICATIONS...
Page 12 • Dimensions of the equipment ..See the figure below (W660 x D718 x H739 mm) * When the tilt angle of the control panel is 45 degrees. Fig. 1-101 e-STUDIO350/450 SPECIFICATIONS 1 - 4 November 2003 © TOSHIBA TEC...
Page 13: Accessories
4 pcs. Rubber plug 4 pcs. CD-ROM 5 pcs. * Machine version NAD: North America MJD: Europe AUD: Australia ASD: Asia TWD: Taiwan SAD: Saudi Arabia JPD: Japan CND: China November 2003 © TOSHIBA TEC 1 - 5 e-STUDIO350/450 SPECIFICATIONS...
Page 14: Options
2. The finisher (MJ-1023 or MJ-1024) is necessary for installation of the hole punch unit (MJ- 6004N/E/F/S). 3. The PCI slot (GO-1030) is necessary for installation of the scrambler board (GP-1030). e-STUDIO350/450 SPECIFICATIONS 1 - 6 November 2003 © TOSHIBA TEC...
Page 15: Supplies
* 2) N : Asia E : Europe NONE : North America * 3) T : Taiwan D : Asia C : China E : Europe NONE : North America November 2003 © TOSHIBA TEC 1 - 7 e-STUDIO350/450 SPECIFICATIONS...
Page 17: Outline Of The Machine
2. OUTLINE OF THE MACHINE 2.1 Sectional View 56,59 63 64 61 62 46 47 70 71 20,21 20,21 Fig. 2-101 November 2003 © TOSHIBA TEC 2 - 1 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 18 Power supply cooling fan Bypass pickup roller Main switch Bypass feed roller Front cover opening/closing switch Bypass separation roller Cover opening/closing interlock switch Bypass tray Polygonal motor e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 2 November 2003 © TOSHIBA TEC...
Page 20 Lower drawer feed clutch Main motor Tray-up motor Exit motor Drawer detection switch Toner bag full detection sensor-1 Upper drawer feed clutch ADU opening/closing switch Developer unit cooling fan-2 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 4 November 2003 © TOSHIBA TEC...
Page 21: Electric Parts Layout
PC board unit Scanner unit Control panel unit Fuser unit Automatic duplexing unit Bypass unit Transport unit Process unit Laser unit Front side Paper feeder unit Fig. 2-201 November 2003 © TOSHIBA TEC 2 - 5 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 22 [B] Scanner unit (B-1) Motor, sensor, lamp A4 series Front side Fig. 2-202-1 LT series Front side Fig. 2-202-2 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 6 November 2003 © TOSHIBA TEC...
Page 23 (B-2) PC board, heater, thermostat, other part DH2* THMO2* DH1* Front side Fig. 2-203 * ASD/AUD/CND/SAD/TWD models : Standard NAD/MJD models : Option [C] Control panel unit Front side Fig. 2-204 November 2003 © TOSHIBA TEC 2 - 7 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 24 Front side Fig. 2-205 (D-2) Motor, sensor, lamp, heater, thermistor, thermostat THMO3* THM3 DH3* Front side * ASD/AUD/CND/SAD/TWD models : Standard NAD/MJD models : Option Fig. 2-206 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 8 November 2003 © TOSHIBA TEC...
Page 25 [E] Laser unit Front side Fig. 2-207 [F] Paper feeder unit CLT1 CLT2 Front side Fig. 2-208 November 2003 © TOSHIBA TEC 2 - 9 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 26 [G] Transport unit Front side Fig. 2-209 [H] Bypass unit CLT3 SOL1 Front side Fig. 2-210 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 10 November 2003 © TOSHIBA TEC...
Page 27 Automatic duplexing unit CLT4 Front side Fig. 2-211 [J] Fuser unit THMO1 IH-COIL THM1 THM2 Front side Fig. 2-212 November 2003 © TOSHIBA TEC 2 - 11 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 28 [K] Drive unit CLT5 CLT6 CLT7 CLT8 Front side Fig. 2-213 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 12 November 2003 © TOSHIBA TEC...
Page 29 [L] PC board unit FIL or FUS* Front side * NAD/SAD/TWD models : FIL (Standard) ASD/AUD/CND models : FUS (Standard) MJD model : FUS (Option) Fig. 2-214 November 2003 © TOSHIBA TEC 2 - 13 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 30: Symbols And Functions Of Various Components
DEV-FAN-MOT2 Cooling down the developer unit P6 - I39 Developer unit cooling fan-2 PS-FAN-MOT Cooling down the power supply unit P9 - I7 Power supply cooling fan e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 14 November 2003 © TOSHIBA TEC...
Page 31 Paper amount detection in the upper P14 - I30 Upper drawer paper stock sensor drawer NEMP-L-SNR Paper amount detection in the lower P14 - I30 Lower drawer paper stock sensor drawer November 2003 © TOSHIBA TEC 2 - 15 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 32 Cover opening/closing interlock switch 24V voltage by opening/closing of the front cover or jam access cover SIDE-COV-SW Side cover opening/closing detection P19 - I2 Side cover opening/closing switch e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 16 November 2003 © TOSHIBA TEC...
Page 33 P15 - I16 Transport clutch (High speed) (High speed) Solenoids Name Function Symbol Remarks SOL1 SFB-SOL Driving the bypass pickup roller P18 - I11 Bypass pickup solenoid November 2003 © TOSHIBA TEC 2 - 17 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 34 Power supplying to each damp heater *NAD/SAD/TWD models: Standard PWA-F-FUS Supplying the power to each damp P6 - I24 Fuse PC board (FUS board) heater *ASD/AUD/CND models: Standard *MJD model: Option e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 18 November 2003 © TOSHIBA TEC...
Page 35 P10 - I22 Scanner damp heater thermostat scanner damp heater P27 - I7 THMO3 THERMO-DRM-DH Controlling the temperature of the Drum damp heater thermostat drum damp heater November 2003 © TOSHIBA TEC 2 - 19 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 36 Hard disk data NS-FIL Cutting noise of AC power P6 - I13 Noise filter BREAKER Preventing the inflow of overcurrent to P6 - I14 Breaker the equipment e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 20 November 2003 © TOSHIBA TEC...
Page 37: General Description
2.4 General Description 2.4.1 System block diagram Fig. 2-401 November 2003 © TOSHIBA TEC 2 - 21 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 38 LCD are mounted. And it relays the control signal of the control panel from the SYS board to the LCD and KEY board. e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 22 November 2003 © TOSHIBA TEC...
Page 39 ASIC to drive I/O (for the electrical parts) of each section in the system. It leads to the operation of the laser unit, developer unit, drum, drawers, bypass unit, ADU, etc. Thus printing is performed. November 2003 © TOSHIBA TEC 2 - 23 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 40 This is the unit to generate each DC voltage, which is used in the equipment, from external AC electric power input. And then it is provided to each electrical part. e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 24 November 2003 © TOSHIBA TEC...
Page 41: Installation And Replacement Of Covers And Pc Boards
Pull up the hinge pin and extract it. Take off the front cover. Fig. 2-503 [B] Front left cover Open the front cover. Remove 1 screw and front left cover. Guide Fig. 2-504 November 2003 © TOSHIBA TEC 2 - 25 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 42 (2) Remove 2 screws and take off the front upper cover. Fig. 2-507 [F] Right upper cover (1) Remove 3 screws and take off the right upper cover. Fig. 2-508 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 26 November 2003 © TOSHIBA TEC...
Page 43 [H]). Remove 1 screw and take off the receiving tray back cover. Fig. 2-511 Left cover Remove 3 screws and take off the left cover. Fig. 2-512 November 2003 © TOSHIBA TEC 2 - 27 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 44 (2) Remove 2 screws and take off the right front hinge cover. Fig. 2-515 [N] Right rear hinge cover (1) Remove 2 screws and take off the right rear hinge cover. Fig. 2-516 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 28 November 2003 © TOSHIBA TEC...
Page 45 Take off the right upper cover Chapter 2.5.1 [F]). Take off the upper drawer. Open the bypass tray and ADU. Remove 2 screws and take off the front right Fig. 2-519 cover. November 2003 © TOSHIBA TEC 2 - 29 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 46 (2) Loosen 8 screws and take off the LGC board cover. Fig. 2-522 (3) Disconnect 15 connectors, 1 connector with lock and 1 joint connector fixed to the case. Lock connector Fig. 2-523 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 30 November 2003 © TOSHIBA TEC...
Page 47 Loosen 9 screws and take off the SYS board upper cover. Fig. 2-526 Disconnect 2 connectors. Loosen 5 screws and take off the hard disk with the whole SYS board lower cover. Fig. 2-527 November 2003 © TOSHIBA TEC 2 - 31 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 48 (4) Release all the harnesses from harness clamps and holders on the case. Fig. 2-530 (5) Remove 5 screws and take off the SYS board with the whole case. Fig. 2-531 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 32 November 2003 © TOSHIBA TEC...
Page 49 Remove 2 screws and take off the power sup- ply cooling fan on the switching power sup- ply. Note: When installing, pay attention to the direction of the wind from the fan. Fig. 2-535 November 2003 © TOSHIBA TEC 2 - 33 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 50 (1) Take off the rear cover and right lower cover Chapter 2.5.1 [C][O]). (2) Disconnect 4 connectors. Remove 1 screw and 1 washer. Then take off the noise filter. White Black Fig. 2-537 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 34 November 2003 © TOSHIBA TEC...
Page 51: Options
Take off the connector cover. Fig. 2-601 Disconnect the connector. Fig. 2-602 Remove 2 screws on the rear side. Fig. 2-603 Open the RADF. Fig. 2-604 November 2003 © TOSHIBA TEC 2 - 35 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 52 (3) Remove 1 screw and the ground wire, and then disconnect 2 connectors (3 if the optional Connector of optional damp heater is installed). damp heater Fig. 2-608 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 36 November 2003 © TOSHIBA TEC...
Page 53 Remove 4 screws and take off 2 fixing brack- ets on the front side. Fig. 2-611 Lift up the equipment and take off the PFP. Fig. 2-612 November 2003 © TOSHIBA TEC 2 - 37 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 54 (4) Remove 2 screws and take off 2 fixing brack- ets on the rear side. Fig. 2-615 (5) Take off the lower drawer of the equipment. Fig. 2-616 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 38 November 2003 © TOSHIBA TEC...
Page 55 Remove 4 screws and take off 2 fixing brack- ets on the front side. Fig. 2-618 Lift up the equipment and take off the LCF. Fig. 2-619 November 2003 © TOSHIBA TEC 2 - 39 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 56 Fig. 2-621 (4) Remove 2 screws and take off the safety bracket on the front side and the cover. Fig. 2-622 (5) Remove 2 screws. Fig. 2-623 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 40 November 2003 © TOSHIBA TEC...
Page 57 Remove 2 screws and take off the cover on the rear side. Fig. 2-626 Remove 2 screws and take off the cover on the front side. Fig. 2-627 November 2003 © TOSHIBA TEC 2 - 41 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 58 (1) Turn OFF the power and unplug the power cable. (2) Take off the connector cover and disconnect the connector. Fig. 2-630 (3) Remove 1 screw and take off the finisher lower cover. Fig. 2-631 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 42 November 2003 © TOSHIBA TEC...
Page 59 Fig. 2-632 Remove 1 screw. Fig. 2-633 Remove 1 screw and take off the cover of the finisher rear side. Fig. 2-634 Remove 1 screw. Fig. 2-635 November 2003 © TOSHIBA TEC 2 - 43 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 60 (3) Open the finisher front cover and remove 1 screw. Fig. 2-638 (4) Remove 1 screw and take off the cover of the finisher rear side. Fig. 2-639 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 44 November 2003 © TOSHIBA TEC...
Page 61 Turn OFF the power and unplug the power cable. Take off the connector cover and disconnect connector. Fig. 2-642 Open the front cover of the hole punch unit and remove 1 screw. Fig. 2-643 November 2003 © TOSHIBA TEC 2 - 45 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 62 Fig. 2-644 (5) Remove 1 screw. Fig. 2-645 (6) Remove 3 screws and take off the punch unit rear cover. Fig. 2-646 (7) Remove 1 screw. Fig. 2-647 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 46 November 2003 © TOSHIBA TEC...
Page 63 Fig. 2-648 Disconnect 2 connectors. Fig. 2-649 (10) Remove 2 screws. Fig. 2-650 (11) Lift up the punch unit and take it off. Fig. 2-651 November 2003 © TOSHIBA TEC 2 - 47 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 64 Fig. 2-653 (4) Open the bridge unit. Remove 1 screw and take off the cover. Fig. 2-654 (5) Close the bridge unit and remove 1 screw. Fig. 2-655 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 48 November 2003 © TOSHIBA TEC...
Page 65 MJ-5004 (Job separator) Turn OFF the power and unplug the power cable. Take off the tray. Fig. 2-658 Remove 2 screws and take off the cover. Fig. 2-659 November 2003 © TOSHIBA TEC 2 - 49 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 66 (5) Loosen 2 screws and take off the cover. Fig. 2-661 (6) Remove 1 screw. (7) Lift up the job separator and release the hook. Take off the job separator toward the front. Fig. 2-662 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 50 November 2003 © TOSHIBA TEC...
Page 67 Fig. 2-663 Remove 2 screws and take off the cover. Fig. 2-664 Disconnect 2 connectors. Fig. 2-665 Remove 1 screw and take off the cover. Fig. 2-666 November 2003 © TOSHIBA TEC 2 - 51 e-STUDIO350/450 OUTLINE OF THE MACHINE...
Page 68 (6) Remove 1 screw. (7) Lift up the offset tray and release the hook. Take off the offset tray toward the front. Fig. 2-667 e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 52 November 2003 © TOSHIBA TEC...
Page 69: Copy Process
Development: Negatively-charged toner adheres to the photoconductive drum and forms visible (11) Discharging : Eliminates the residual nega- image. tive charge from the surface of the photoconductive drum. November 2003 © TOSHIBA TEC 3 - 1 e-STUDIO350/450 COPY PROCESS...
Page 70: Details Of Copying Process
Grid control circuit The surface potential on the drum is deter- transformer mined by the grid potential and is controlled to Fig.3-203 a certain value by the grid control circuit. e-STUDIO350/450 COPY PROCESS 3 - 2 November 2003 © TOSHIBA TEC...
Page 71 Semiconductive ing section into optical signal (laser emission) laser element to expose the drum surface and form an elec- Photo- trostatic latent image on it. conductive drum Fig.3-206 November 2003 © TOSHIBA TEC 3 - 3 e-STUDIO350/450 COPY PROCESS...
Page 72 – 400V potential Image developed by the developer bias. toner – 300V The (–) potential of the photoconductive – 200V drum is lower than the developer bias. – 100V Fig.3-209 e-STUDIO350/450 COPY PROCESS 3 - 4 November 2003 © TOSHIBA TEC...
Page 73 The developer material forms a brush-like fluff which contacts the photoconductive drum sur- Magnetic force line face. Magnetic roller This is caused by the magnetic force lines be- tween the south and north poles. Fig.3-212 November 2003 © TOSHIBA TEC 3 - 5 e-STUDIO350/450 COPY PROCESS...
Page 74 As indicated in the figure below, the life of the toner cartridge varies depending on the copy mode and coverage of originals. A full block in the figure below denotes approx. 10,000 output pages. Type of originals Block Fig.3-213 e-STUDIO350/450 COPY PROCESS 3 - 6 November 2003 © TOSHIBA TEC...
Page 75 Direction of drum becomes weak. transportation The paper is separated from the Fig.3-216 drum by its own stiffness and ab sorption by the fan. November 2003 © TOSHIBA TEC 3 - 7 e-STUDIO350/450 COPY PROCESS...
Page 76 Heat and pressure are applied to (Pressure) the paper when it passes between the fuser roller and pressure roller. IH coil Pressure roller Paper (Fusing) The toner is fused on the paper. movement Fig.3-219 e-STUDIO350/450 COPY PROCESS 3 - 8 November 2003 © TOSHIBA TEC...
Page 77 The photoconductive drum becomes electri- cally conductive. All of the negative charge remaining on the photoconductive drum is conducted to the ground. Preparation for the next printing is completed. November 2003 © TOSHIBA TEC 3 - 9 e-STUDIO350/450 COPY PROCESS...
Page 78: Comparison With Dp4500/3500
← Pressure roller: ← PFA tube roller (ø30) (2) Cleaning Cleaning roller for pressure roller ← (ø14) ← ← (3) Heater IH coil (Induction-heating method) Turned ON/OFF by thermistor e-STUDIO350/450 COPY PROCESS 3 - 10 November 2003 © TOSHIBA TEC...
Page 79: General Operation
– Each drawer tray goes up. • Pre-running operation stops after five seconds. (3) When the surface temperature of the fuser roller becomes sufficient for fusing, • “READY” is displayed. November 2003 © TOSHIBA TEC 4 - 1 e-STUDIO350/450 GENERAL OPERATION...
Page 80: Ready State (Ready For Copying)
(5) Completion of scanning • Scan motor OFF • Exposure lamp OFF • Registration clutch OFF (after the trailing edge of the paper passed the registration roller) • “READY (PRINTING)” is displayed e-STUDIO350/450 GENERAL OPERATION 4 - 2 November 2003 © TOSHIBA TEC...
Page 81 Polygonal motor, main motor and exit motor OFF • Drum, fuser unit and developer unit stop • Fans return to the ready rotation • “READY” is displayed and the equipment enters the ready mode November 2003 © TOSHIBA TEC 4 - 3 e-STUDIO350/450 GENERAL OPERATION...
Page 82 Timing chart for copying one A4 size sheet fed from the upper drawer e-STUDIO350/450 GENERAL OPERATION 4 - 4 November 2003 © TOSHIBA TEC...
Page 83: Bypass Feed Copying
Carriages -1 and -2 return to appropriate positions • “Job interrupted job 1saved” is displayed. • Automatic density and reproduction ratio 100% are set (The set number remains the same) Select the desired copy condition November 2003 © TOSHIBA TEC 4 - 5 e-STUDIO350/450 GENERAL OPERATION...
Page 84: Detection Of Abnormality
(1) Misfeed in equipment (2) Add toner (3) Developer unit not installed properly (4) Toner bag replacement Abnormality not cleared without turning OFF the main switch (1) Call for service e-STUDIO350/450 GENERAL OPERATION 4 - 6 November 2003 © TOSHIBA TEC...
Page 85: Description Of Abnormality
“Add paper” displayed ↓ [START] button disabled [When drawer is installed] Drawer detected ↓ Tray going up (drawer empty sensor OFF) ↓ “Add paper” displayed ↓ [START] button disabled November 2003 © TOSHIBA TEC 4 - 7 e-STUDIO350/450 GENERAL OPERATION...
Page 86 Empty sensor turned OFF during the copying in spite of the tray-up sensor is ON It is judged that there is no paper. ↓ Drawer area of the illustration blinks (When the drawer is selected) ↓ The copying operation is stopped. e-STUDIO350/450 GENERAL OPERATION 4 - 8 November 2003 © TOSHIBA TEC...
Page 87 Exit sensor If the exit sensor is not turned ON after Timer 1.056 seconds, 1.056sec. ↓ Paper jam (E010) → The copying operation is stopped. Paper jam (E010) Fig. 4-301 November 2003 © TOSHIBA TEC 4 - 9 e-STUDIO350/450 GENERAL OPERATION...
Page 88 Registration sensor is not turned ON in a fixed period of time after the ADU clutch is turned ↓ Paper jam (E110) • During paper transporting from ADU: ADU entrance/exit sensors do not detect the paper at the fixed timing ↓ Paper jam (E510 or E520) e-STUDIO350/450 GENERAL OPERATION 4 - 10 November 2003 © TOSHIBA TEC...
Page 89 Error code is displayed instead of the set number by pressing the [CLEAR] button and [8] button simultaneously when the “Call for service” is blinking. Refer to the error code table in the Service Handbook. November 2003 © TOSHIBA TEC 4 - 11 e-STUDIO350/450 GENERAL OPERATION...
Page 90: Flow Chart
2.5 seconds elapsed? detected? Call for service entrance/exit sensors Peak detected? “C270” “C280” Call for service “C260” Upper drawer feed sensor ON? Lower drawer feed sensor ON? Paper jam e-STUDIO350/450 GENERAL OPERATION 4 - 12 November 2003 © TOSHIBA TEC...
Page 91 Tray-up motor ON Call for service Call for service Call for service Call for service Fuser roller reached ready temp.? “C410” “C440” “CA10” “C470” “C430” “C480” “C490” Main motor OFF READY November 2003 © TOSHIBA TEC 4 - 13 e-STUDIO350/450 GENERAL OPERATION...
Page 92: Automatic Paper Feed Copying
“CA20” Remaining set Carriages stopped number=0? Remaining set Scanning system number=0? control completed Exit sensor detected leading Laser OFF edge of paper? Paper jam Processing system “E010” control completed e-STUDIO350/450 GENERAL OPERATION 4 - 14 November 2003 © TOSHIBA TEC...
Page 93 Paper jam detected trailing edge of paper? “E020” Polygonal motor OFF Main charger OFF Discharge LED OFF Developer bias OFF Exit motor OFF Drum rotation reversed Main motor OFF READY November 2003 © TOSHIBA TEC 4 - 15 e-STUDIO350/450 GENERAL OPERATION...
Page 95: Control Panel
This equipment has a movable control panel which enables to adjust its angle to the operator. It also has improved its operatability and visibility with the enlarged LCD panel. [Control Panel Outside View] Fig. 5-101 November 2003 © TOSHIBA TEC 5 - 1 e-STUDIO350/450 CONTROL PANEL...
Page 96: Items Shown On The Display Panel
5.2 Items Shown on the Display Panel Fig. 5-201 Fig. 5-202 e-STUDIO350/450 CONTROL PANEL 5 - 2 November 2003 © TOSHIBA TEC...
Page 97: Display
READY Punching dust box is full Resumes printing by removing (HOLE PUNCH - Scanning is enabled punching dust from the dust box DUST BIN IS FULL) November 2003 © TOSHIBA TEC 5 - 3 e-STUDIO350/450 CONTROL PANEL...
Page 98 Select a paper size Displayed when paper size needs to be for bypass feeding specified for bypass feeding such as duplex copying e-STUDIO350/450 CONTROL PANEL 5 - 4 November 2003 © TOSHIBA TEC...
Page 99 No stapler in saddle stitch unit in the saddle stitch unit Job interrupted job 1 Interrupt copying is accepted saved Ready to resume job Interrupt copying is cancelled (finished) November 2003 © TOSHIBA TEC 5 - 5 e-STUDIO350/450 CONTROL PANEL...
Page 100 Dsiplays the warning that the copy is not and select normal enabled when any drawer but bypass feed is paper size selected at Cover Sheet Mode or Sheet Insertion Mode. e-STUDIO350/450 CONTROL PANEL 5 - 6 November 2003 © TOSHIBA TEC...
Page 101 Set standard size Displayed when the paper size which is not Reset the paper size. acceptable is set (depends on the setting) November 2003 © TOSHIBA TEC 5 - 7 e-STUDIO350/450 CONTROL PANEL...
Page 102: Relation Between The Equipment State And Operator's Operation
5.3 Relation between the Equipment State and Operator’s Operation e-STUDIO350/450 CONTROL PANEL 5 - 8 November 2003 © TOSHIBA TEC...
Page 103: Description Of Operation
LSI, frame, printed circuit board, and lateral type CCFL backlight. * STN: Super Twisted Nematic * CCFL:Cold Cathod Fluorescent Lamp (2) Block diagram XSCL LCDEN LCD PANEL 640 x 240 DOTS Power supply Fig. 5-402 November 2003 © TOSHIBA TEC 5 - 9 e-STUDIO350/450 CONTROL PANEL...
Page 104 LED scan signal LED serial output LED driver Buzzer ON signal Buzzer Fig. 5-403 (4) Data Transmission 1/tF 1/tF FRAME LOAD FRAME LOAD CP x(640/4) pulses D0-D3 Fig. 5-404 e-STUDIO350/450 CONTROL PANEL 5 - 10 November 2003 © TOSHIBA TEC...
Page 105: Led Display Circuit
(a) The transistor (Q3) connected to the LED anode is ON. (b) The output from the cathode side of the LED is “L” level. The LED turns ON when the conditions (a) and (b) are met. November 2003 © TOSHIBA TEC 5 - 11 e-STUDIO350/450 CONTROL PANEL...
Page 106: Disassembly And Replacement
(3) Remove 3 screws and take off 3 harness clamps. Fig. 5-503 (4) Lower the control panel and remove 6 screws. (5) Take off the control panel unit while sliding it. Fig. 5-504 e-STUDIO350/450 CONTROL PANEL 5 - 12 November 2003 © TOSHIBA TEC...
Page 107 Fig. 5-506 (8) Disconnect 5 connectors and 1 harness clamp, take off the DSP board. Fig. 5-507 (9) Remove 4 screws and take off the LCD. Fig. 5-508 November 2003 © TOSHIBA TEC 5 - 13 e-STUDIO350/450 CONTROL PANEL...
Page 108 (10) Remove 16 screws and take off the KEY board. Fig. 5-509 e-STUDIO350/450 CONTROL PANEL 5 - 14 November 2003 © TOSHIBA TEC...
Page 109: Scanner
After that, arithmetic operation is performed on the digital signal, which is then transmitted to the data writing section. Reflector Lens Original glass Exposure lamp Drive pulley Rail for carriage-2 Rail for carriage-1 Carriage-2 SLG board Carriage-1 CCD board Fig. 6-101 November 2003 © TOSHIBA TEC 6 - 1 e-STUDIO350/450 SCANNER...
Page 110: Construction
This is a plate to efficiently direct the light from the exposure lamp to the surface of the original on the glass. d. Mirror-1 This mirror directs the light reflected from the original to the mirror-2 described later. Original glass Original Exposure lamp Lamp inverter Reflector Mirror-1 Fig. 6-202 e-STUDIO350/450 SCANNER 6 - 2 November 2003 © TOSHIBA TEC...
Page 111 Automatic original detection sensor The size of an original placed on the glass is instantly detected using the automatic original detection sensors (APS sensor) fixed on the base frame without moving the carriage-1. November 2003 © TOSHIBA TEC 6 - 3 e-STUDIO350/450 SCANNER...
Page 112: Description Of Operation
(b) Scanning of an original placed on the RADF The carriage-1 stays at the shading position during shading correction, and at the scanning position during scanning operation. e-STUDIO350/450 SCANNER 6 - 4 November 2003 © TOSHIBA TEC...
Page 113: Scanning Drive Circuit
Excitation mode setting ( 2 ) MOTMD2 Excitation mode setting ( 1 ) MOTMD1 MOTDIR Rotation direction setting MOTEN Cut off output Reset MOTRST RESET RESET IC SLG board Fig. 6-302 November 2003 © TOSHIBA TEC 6 - 5 e-STUDIO350/450 SCANNER...
Page 114 Internal circuit of the driver is initialized by setting the motor to “L” Reset MOTRST Input level (pulse interval: 10µs or more). The motor drive circuit is automatically reset when the power is turned ON. e-STUDIO350/450 SCANNER 6 - 6 November 2003 © TOSHIBA TEC...
Page 115: Initialization At Power-On
Carriage home position Deceleration -> Stop data set Deceleration -> Stop Moving peak detection position Peak detection Completion of initialization Moving to carriage waiting position Scanning command Fig. 6-303 November 2003 © TOSHIBA TEC 6 - 7 e-STUDIO350/450 SCANNER...
Page 116: Control Of Exposure Lamp
CCD. The signal is then digitized and output from this circuit. Shading correction plate Original Exposure lamp (xenon lamp) Lighting device for xenon lamp (Inverter) PWA-CCD PWA-SLG Scanner Image processing circuit Fig. 6-401 e-STUDIO350/450 SCANNER 6 - 8 November 2003 © TOSHIBA TEC...
Page 117: Exposure Lamp
This ultraviolet ray converts the fluorescer into the visible light. (1)Electrode (2)Electron (3)Xenon atom (4)Ultraviolet ray (5)Fluorescer (6)Visible light (irradiated from the opening to outside the pipe) (7)Opening (8)Harness Fig. 6-403 November 2003 © TOSHIBA TEC 6 - 9 e-STUDIO350/450 SCANNER...
Page 118: Control Circuit For The Exposure Lamp
Lamp turns ON at “L” 5VSW ON 5V SW ON signal Controls 5VSW by CPU. Normally “L” WDTOUT Watchdog timer signal “L” is output when CPU is out of control Xenon lamp e-STUDIO350/450 SCANNER 6 - 10 November 2003 © TOSHIBA TEC...
Page 119: General Description Of Ccd Control
I = k x (W — K) k : Coefficient S : Image data before correction K : Black data (stored in “black” memory) W : White data (stored in “white” memory) November 2003 © TOSHIBA TEC 6 - 11 e-STUDIO350/450 SCANNER...
Page 120: Automatic Original Size Detection Circuit
(3) The output signal from each sensor is input to CPU on the SLG board to determine the size of the original. [LT Series] [A4 Series] APS-R APS-R APS-C APS-C Reflection type Reflection type APS-3 photosensor photosensor APS-3 APS-2 APS-1 APS-2 PWA-SLG PWA-SLG Fig. 6-602 Original size detection circuit e-STUDIO350/450 SCANNER 6 - 12 November 2003 © TOSHIBA TEC...
Page 121 [A4 Series] APS-R APS-C A5–R B5–R A4–R APS-3 APS-1 APS-2 [LT Series] APS-R APS-C ST–R APS-3 LT–R APS-2 Fig. 6-603 Sensor detection points November 2003 © TOSHIBA TEC 6 - 13 e-STUDIO350/450 SCANNER...
Page 122 * When the platen sensor is ON, The latest original size (or no original state) recognized right before the platen sensor is turned ON is re- tained regardless of the status the APS sensor output signals. e-STUDIO350/450 SCANNER 6 - 14 November 2003 © TOSHIBA TEC...
Page 123 The light emitting diode is driven by a pulse having a 130 µsec cycle and an 8 µsec ON time. When the phototransistor receives the same signal as this pulse, it is determined that there is an original. The pulse modulation is performed inside the reflection type phototransistor. November 2003 © TOSHIBA TEC 6 - 15 e-STUDIO350/450 SCANNER...
Page 124: Disassembly And Replacement
(2) Disconnect 1 connector from the SLG board. (3) Release the harnesses from 6 harness clamps. (4) Remove 1 screw each and take off the APS sensors (5 pcs.). Fig. 6-704A e-STUDIO350/450 SCANNER 6 - 16 November 2003 © TOSHIBA TEC...
Page 125 When disconnecting the connector, make sure not to overload the carriage frame. Fig. 6-706 Move the carriage-1 to the position where the exposure lamp is seen through the cutout of the frame. Fig. 6-707 November 2003 © TOSHIBA TEC 6 - 17 e-STUDIO350/450 SCANNER...
Page 126 Fig. 6-710 4. Handle the unit with extra care. Do not touch the adjusted area or lens. (Hold the unit as shown in the figure at right.) Fig. 6-711 e-STUDIO350/450 SCANNER 6 - 18 November 2003 © TOSHIBA TEC...
Page 127 Fig. 6-714 frame on both ends of carriage-1. (5) Disconnect 1 connector from the SLG board. Remove 2 seals and release the cable. Fig. 6-715 November 2003 © TOSHIBA TEC 6 - 19 e-STUDIO350/450 SCANNER...
Page 128 Mirror-1 should not be removed. INV board (1) Take off the carriage-1 ( Chapter 6.7 [G]). (2) Disconnect 2 connectors. (3) Remove 2 screws and take off the INV board. Fig. 6-718 e-STUDIO350/450 SCANNER 6 - 20 November 2003 © TOSHIBA TEC...
Page 129 Take off the carriage-2 ( Chapter 6.7 [J]). Note: When replacing the mirrors-2 and -3, re- place the carriage-2 together with mirrors- 2 and -3. Mirrors-2 and -3 should not be removed. November 2003 © TOSHIBA TEC 6 - 21 e-STUDIO350/450 SCANNER...
Page 130 (1) Take off the lens cover ( Chapter 6.7 [B]). (2) Disconnect 8 connectors from the SLG board. (3) Remove 6 screws and take off the SLG board. Fig. 6-723 e-STUDIO350/450 SCANNER 6 - 22 November 2003 © TOSHIBA TEC...
Page 131: Image Processing
(PWA-F-SLG-360) processing and external output system interface LGC board Smoothing processing, external input system interface, image area control, (PWA-F-LGC-360) laser related control and printer high quality image processing November 2003 © TOSHIBA TEC 7 - 1 e-STUDIO350/450 IMAGE PROCESSING...
Page 132 Images are processed by the SLG board (PWA-F-SLG-360) and LGC board (PWA-F-LGC-360) in this equipment. The image signal read in the scanning function is processed in SLG board and the printer image signal is processed in the SYS board. e-STUDIO350/450 IMAGE PROCESSING 7 - 2 November 2003 © TOSHIBA TEC...
Page 133: Configuration
Smoothing processing External input system interface Image area control Laser related control Printer high-quality image processing Laser drive board ( PWA-F-LDR-360 ) Image data flow Laser drive Fig. 7-201 November 2003 © TOSHIBA TEC 7 - 3 e-STUDIO350/450 IMAGE PROCESSING...
Page 134: Slg Board (Pwa-F-Slg-360)
(2) The image processing section on the SLG board realizes the following when functioning the equipment: • High quality image processing • Image memory editing • Editing processing • Gamma correction • Gradation processing • External output system interface e-STUDIO350/450 IMAGE PROCESSING 7 - 4 November 2003 © TOSHIBA TEC...
Page 135: Functions Of Image Processing Circuit
Dynamic range Extended dynamic range After range width width adjustment Back- ground Text Lower Density Higher Lower Density Higher Histogram Fig. 7-301 November 2003 © TOSHIBA TEC 7 - 5 e-STUDIO350/450 IMAGE PROCESSING...
Page 136 Solid black area Low contrast area Original Image signal After correction Fig. 7-303 e-STUDIO350/450 IMAGE PROCESSING 7 - 6 November 2003 © TOSHIBA TEC...
Page 137 Using rectangular area signals, the image data inside the rectangular area are erased. (c) Negative/positive reversing This function reverses the entire date from negative to positive or vice versa. November 2003 © TOSHIBA TEC 7 - 7 e-STUDIO350/450 IMAGE PROCESSING...
Page 138 This function controls the output of the output interface. (7) Scanner high quality image processing This function corrects the image signals scanned by the scanner and reproduces them in a higher image quality. e-STUDIO350/450 IMAGE PROCESSING 7 - 8 November 2003 © TOSHIBA TEC...
Page 139: Lgc Board (Pwa-F-Lgc-360)
This function sets the effective image area in horizontal and vertical directions to be output. Laser related control This function performs the APC (Auto Power Control). Printer high quality processing This function reproduces the image signals output from the printer controller sharper. November 2003 © TOSHIBA TEC 7 - 9 e-STUDIO350/450 IMAGE PROCESSING...
Page 140: Laser Driving Pc Board
(2) Horizontal synchronization signal (H-Sync) ..• Reference clock signal in the printer section clock generation section synchronized with H-Sync and its signal. (3) Laser drive section ..........• ON/OFF control of the semiconductive laser and APC (Auto Power Control). e-STUDIO350/450 IMAGE PROCESSING 7 - 10 November 2003 © TOSHIBA TEC...
Page 141: Laser Optical Unit
The unit must not be disassembled in the field as they are very sensitive to dust and finely ad- justed at the factory. Paper exit Front Rear Fig. 8-101 November 2003 © TOSHIBA TEC 8 - 1 e-STUDIO350/450 LASER OPTICAL UNIT...
Page 142 Cylinder lens Front Polygonal motor drive PC board H-Sync signal detection PC board Rear f lens-2 Slit glass ( for outgoing laser beam ) H-Sync returning mirror Fig. 8-102 e-STUDIO350/450 LASER OPTICAL UNIT 8 - 2 November 2003 © TOSHIBA TEC...
Page 143: Structure
The warning label shown below is attached on the inner housing at the front side of the equipment. Fig. 8-201 [CAUTION] • Do not approach tools near the path of the laser beam. • Take off your watches, rings, bracelets, etc. before handling the unit. November 2003 © TOSHIBA TEC 8 - 3 e-STUDIO350/450 LASER OPTICAL UNIT...
Page 144 One scan is completed by completion of steps (A) to (C). One scan is performed on one plane of the polygo- nal-mirror. Eight scans can be made with one rotation of the polygonal mirror. e-STUDIO350/450 LASER OPTICAL UNIT 8 - 4 November 2003 © TOSHIBA TEC...
Page 145 H-Sync detection mirror and enters the PIN diode on the H-Sync signal detection PC board. The primary scanning synchronizing signal is generated based on this reflec- tion. November 2003 © TOSHIBA TEC 8 - 5 e-STUDIO350/450 LASER OPTICAL UNIT...
Page 146 Laser ON/OFF function (6) Slit glass Slit glass is located where the laser beam is output from the laser optical unit, and it protects the unit from dust. e-STUDIO350/450 LASER OPTICAL UNIT 8 - 6 November 2003 © TOSHIBA TEC...
Page 147: Laser Diode
Laser driver circuit increases the forward current if the laser power is insufficient, and decreases the current when the power is excessive to maintain a constant optical output. November 2003 © TOSHIBA TEC 8 - 7 e-STUDIO350/450 LASER OPTICAL UNIT...
Page 148: Laser Optical Unit Cooling Fan
Signal Level “L” Level “H” Remarks POMON Polygonal motor ON signal POMCK — — Polygonal motor reference clock signal POMP Normal rotation Abnormal rotation Polygonal motor PLL signal e-STUDIO350/450 LASER OPTICAL UNIT 8 - 8 November 2003 © TOSHIBA TEC...
Page 149 Be careful not to fold the cable on the relay stay rear side. Fig. 8-603 November 2003 © TOSHIBA TEC 8 - 9 e-STUDIO350/450 LASER OPTICAL UNIT...
Page 150 (2) Disconnect 2 connectors with lock (CN204 and CN206) and 2 connectors (CN205 and CN207). (3) Remove 1 screw. Take off the LRL PC board by releasing 2 locking supports. Fig. 8-606 e-STUDIO350/450 LASER OPTICAL UNIT 8 - 10 November 2003 © TOSHIBA TEC...
Page 151: Paper Feeding System
Lower drawer paper stock sensor Registration roller (metal) Lower drawer tray-up sensor Transport roller Bypass paper sensor Bypass pickup roller Bypass feed sensor Bypass feed roller Bypass separation roller November 2003 © TOSHIBA TEC 9 - 1 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 152 Fig. 9-102 Paper feeding section drive system (Rear side) Name Bypass feed clutch Transport clutch (Low speed) Transport clutch (High speed) Upper drawer feed clutch Lower drawer feed clutch e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 2 November 2003 © TOSHIBA TEC...
Page 153 When there is no paper in the drawer, the actuator blocks the light path of the sensor. Then the sensor determines that there is no paper. November 2003 © TOSHIBA TEC 9 - 3 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 154 This sensor detects whether the leading edge of the paper has reached the registration roller or not, and the trailing edge of paper has passed the registration roller or not. e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 4 November 2003 © TOSHIBA TEC...
Page 155: Operation
When the drawer feed clutch is turned ON, the drive from the equipment is transmitted. Then the feed roller and pickup roller rotate to transport the paper from the drawer. The separation roller under the feed roller prevents multiple transporting of paper. November 2003 © TOSHIBA TEC 9 - 5 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 156: Separation Of Paper
A is transported in the direction of the black arrow and the sheet B is braked by the sepa- ration roller and is not transported any further. e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 6 November 2003 © TOSHIBA TEC...
Page 157: General Operation
• The bypass pickup solenoid is turned OFF, and the bypass pickup roller moves up. • The registration clutch is turned ON, and the paper is transported to the transfer unit. November 2003 © TOSHIBA TEC 9 - 7 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 158 • The feed clutch is turned OFF and the pickup roller and feed roller to stop rotating. • The registration clutch is turned ON, and the paper is transported to the transfer unit. e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 8...
Page 159: Drive Circuit Of Tray-Up Motor
IN1 and IN2 are input terminals to receive the signals from the tray-up motor. The control logic based on the signals from the tray-up motor, controls ON/OFF of the rotation direction. Input Output State M (+) M (–) Brake (high Stop impedance) November 2003 © TOSHIBA TEC 9 - 9 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 160: Disassembly And Replacement
(5) Remove 1 screw and take off the 2 ground wires. (6) Disconnect 1 connector and release the harness from harness clamp. Connector Ground wire Screw Fig. 9-404 e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 10 November 2003 © TOSHIBA TEC...
Page 161 Fig. 9-407 Remove 2 screws and slide the hinge assem- bly to take it off with the tray. (Standing the tray makes easier to be removed.) Screw Fig. 9-408 November 2003 © TOSHIBA TEC 9 - 11 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 162 (5) Remove 1 screw on the tray side and take off the bracket. Screw Fig. 9-411 Note: Install the bracket so that its pointer is placed at the same position as before. Pointer Fig. 9-412 e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 12 November 2003 © TOSHIBA TEC...
Page 163 Upper plate Fig. 9-415 Disconnect 1 connector, remove 1 spring and Bypass pickup solenoid take off the bypass pickup solenoid with the solenoid arm. Spring Solenoid arm Fig. 9-416 November 2003 © TOSHIBA TEC 9 - 13 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 164 (2) Remove 1 screw and take off the bypass feed upper cover . Fig. 9-419 (3) Remove 4 screws and take off the bypass Screw Bypass drive unit drive unit. Screw Fig. 9-420 e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 14 November 2003 © TOSHIBA TEC...
Page 165 Take off the bypass drive unit ( Chapter 9.4 (A-6)). E-ring Remove the E-ring, pull out the shaft and take Bushing off the bypass transport roller. Bypass transport roller Bushing Fig. 9-423 November 2003 © TOSHIBA TEC 9 - 15 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 166 (A-10) Bypass separation roller Screw (1) Take off the bypass unit Chapter 9.4 (A-1)). Lower plate (2) Remove 3 screws and take off the lower plate. Fig. 9-427 e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 16 November 2003 © TOSHIBA TEC...
Page 167 Note: Bypass feed sensor Be careful not to come off the sensor arm and the sensor spring after taking off the sensor. Sensor Spring Sensor arm Fig. 9-431 November 2003 © TOSHIBA TEC 9 - 17 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 168 Hook the harness on the hook securely when inserting the connector of the transfer/sepa- ration charger. Hook Fig. 9-434 (10) Disconnect the connector on the front side. Connector Fig. 9-435 e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 18 November 2003 © TOSHIBA TEC...
Page 169 Right transport guide Screw Fig. 9-438 (14) Release the latch and take off the lower Right transport guide drawer feed sensor. Lower drawer feed sensor Fig. 9-439 November 2003 © TOSHIBA TEC 9 - 19 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 170 Note: Make sure that the harness is inserted into the dent of the terminal cover when installing. Terminal cover Fig. 9-442 (11) Disconnect 2 connectors. Connector Fig. 9-443 e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 20 November 2003 © TOSHIBA TEC...
Page 171 (15) Disconnect the connector, release the latch to take off the registration sensor. Connector Fig. 9-446 (16) Disconnect the connector, take off the upper drawer feed sensor. Connector Upper drawer feed sensor Fig. 9-447 November 2003 © TOSHIBA TEC 9 - 21 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 172 SYS board lower cover Fig. 9-449 (9) Release the lock support on the upper side of SYS board case and disconnect 4 connec- tors. Fig. 9-450 e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 22 November 2003 © TOSHIBA TEC...
Page 173 (15) Remove 1 screw and take off the developer unit cooling fan-1 unit. Connector Screw Developer unit cooling fan-1 unit Fig. 9-453 Connector (16) Disconnect 3 connectors of the drive gear unit. Connector Fig. 9-454 November 2003 © TOSHIBA TEC 9 - 23 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 174 Bushing (front side: 1 E-ring, 1 bushing and 1 spring, rear side: 1 E-ring, 1 bushing and 1 spring) Spring E-ring Bushing E-ring Registration roller (metal) Fig. 9-458 e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 24 November 2003 © TOSHIBA TEC...
Page 175 6 latches to take off the cover. Coupling Note: Be careful in taking off the cover because there is a spring in the tray drive unit. Spring Fig. 9-462 November 2003 © TOSHIBA TEC 9 - 25 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 176 Do not apply pressure the transport clutch in Fig. 9-465 all directions when installing the clutch bracket. After installing it, open the side cover and check that the transport roller rotates smoothly. e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 26 November 2003 © TOSHIBA TEC...
Page 177 Take off the tray drive unit with its plate Chapter 9.4 [E]). Disconnect the connector, release the latch and take off the drawer detection switch from Fig. 9-469 the front side. November 2003 © TOSHIBA TEC 9 - 27 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 178 (H-5) Separation roller Screw (1) Take off the drawer feeding unit Chapter 10.4 (H-1)). (2) Remove 1 screw and take off the separation roller holder. Separation roller holder Fig. 9-473 e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 28 November 2003 © TOSHIBA TEC...
Page 179 Pickup roller Assembly Take off the drawer feeding unit Chapter 10.4 (H-1)). Remove the pickup roller assembly from the pickup arms and take off the belt. Belt Fig. 9-477 November 2003 © TOSHIBA TEC 9 - 29 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 180 Clutch bracket Fig. 9-480 (4) Loosen 1 setscrew and take off the drawer feed clutch. Drawer feed clutch Setscrew Fig. 9-481 e-STUDIO350/450 PAPER FEEDING SYSTEM 9 - 30 November 2003 © TOSHIBA TEC...
Page 181 Notes: Attach the clutch to the shaft referring to the figure at right. 0.2-0.5mm Fig. 9-482 November 2003 © TOSHIBA TEC 9 - 31 e-STUDIO350/450 PAPER FEEDING SYSTEM...
Page 183: Drive System
Transport roller drive ..Drives the transport roller by transmitting the rotation of the main motor through the gears and clutches. Feed roller drive ....Drives the cassette feed roller by transmitting the rotation of the main motor through the gears and clutches. November 2003 © TOSHIBA TEC 10 - 1 e-STUDIO350/450 DRIVE SYSTEM...
Page 184: Main Motor
MAMPL signal to the LGC board. (“L” level) (9) When the MAMBK from the LGC board becomes “L” level, the main motor is braked. When the MAMON signal becomes “H” level, the main motor is stopped. e-STUDIO350/450 DRIVE SYSTEM 10 - 2 November 2003 © TOSHIBA TEC...
Page 185: Control Signals
MAMPL Abnormal rotation Normal rotation MAMCK Reference clock signal MAMBK Brake OFF Brake ON MAMON Motor OFF Motor ON * The signal names are for the connector CN318(LGC board). November 2003 © TOSHIBA TEC 10 - 3 e-STUDIO350/450 DRIVE SYSTEM...
Page 186: Disassembly And Replacement
(3) Take off the developer unit cooling fans-1 & -2 Chapter 11.6 [I]). (4) Take of the registration clutch Chapter 10.4 [B]). Connector (5) Disconnect 3 connectors. Fig. 10-404 e-STUDIO350/450 DRIVE SYSTEM 10 - 4 November 2003 © TOSHIBA TEC...
Page 187 (3) Remove the bushing and take off the devel- Bushing oper drive clutch. Note: Match the protruding portion of clutch with Developer drive clutch the position shown in the drawing for as Fig. 10-407 sembling. November 2003 © TOSHIBA TEC 10 - 5 e-STUDIO350/450 DRIVE SYSTEM...
Page 189: Drum Related Section
• Temperature/humidity sensor Toner recovery blade Cleaning blade Sub-separation fan Discharge LED Main charger Exhaust fan Drum thermistor Separation charger Transfer charger Middle cooling fan Drum Transfer guide Fig. 11-101 November 2003 © TOSHIBA TEC 11 - 1 e-STUDIO350/450 DRUM RELATED SECTON...
Page 190: Functions
The sensor detects the toner bag full when it is pushed by the toner recovery auger in the cleaner which is given a pressure from the used toner in the toner bag. e-STUDIO350/450 DRUM RELATED SECTON 11 - 2 November 2003 © TOSHIBA TEC...
Page 191 The exhaust fan removes ozone generated by corona discharge with the ozone filter, and also cools down the inside of the equipment. November 2003 © TOSHIBA TEC 11 - 3 e-STUDIO350/450 DRUM RELATED SECTON...
Page 192 This sensor detects the temperature and humidity inside of the equipment since the auto-toner output, main charger grid, developer bias and laser output are affected by environmental elements such as temperature or humidity. e-STUDIO350/450 DRUM RELATED SECTON 11 - 4 November 2003 © TOSHIBA TEC...
Page 193: Output Control Circuits Of High-Voltage Transformer
* Adjustment of the control voltage Vc (change of adjustment data) is performed in the adjustment mode (05). * The output value of the transfer guide bias is fixed when the high-voltage transformer is shipped from the factory. November 2003 © TOSHIBA TEC 11 - 5 e-STUDIO350/450 DRUM RELATED SECTON...
Page 194 CN306-B12 HVSAV Separation charger CN306-B9 HVTVR Transfer charger CN306-B7 HVDVR conveter Developer bias CN306-B5 HVMVR Main charger ASIC NVRAM IC38 IC32 Fig. 11-302 e-STUDIO350/450 DRUM RELATED SECTON 11 - 6 November 2003 © TOSHIBA TEC...
Page 195: Drum Temperature Detection Circuit
This circuit detects the temperature of the drum surface, and the amount of charge on the drum surface is controlled to be constant based on the result. Configuration of the drum temperature detection circuit DRTH DRTMP-1 Drum thermistor Drum temperature detection circuit Fig. 11-401 November 2003 © TOSHIBA TEC 11 - 7 e-STUDIO350/450 DRUM RELATED SECTON...
Page 196: Temperature/Humidity Sensor
This sensor measures the temperature and humidity inside the equipment. 11.5.2 Construction Temperature/humidity control circuit is configured as follows: HMS-1A PC7/AN7 TEMP-1A PC3/AN3 LGC board HUMI-THS Fig. 11-501 e-STUDIO350/450 DRUM RELATED SECTON 11 - 8 November 2003 © TOSHIBA TEC...
Page 197: Disassembly And Replacement
Fig. 11-603 (B-3) Main charger wire * Length: 363 mm (tungsten wire) diameter: 0.06 mm (1) Take off each terminal cover of the front and rear sides. Fig. 11-604 November 2003 © TOSHIBA TEC 11 - 9 e-STUDIO350/450 DRUM RELATED SECTON...
Page 198 [C] Drum (1) Pull out the cleaner unit and take off the main charger ( Chapter 11.6 [A](B-1)). (2) Release the latch and remove the cleaner stay. Fig. 11-608 e-STUDIO350/450 DRUM RELATED SECTON 11 - 10 November 2003 © TOSHIBA TEC...
Page 199 Take off the cleaner unit. Then take off the main charger and drum Chapter 11.6 [A](B-1)[C]). Remove 2 screws and cleaning blade. Note: Be careful not to touch or scratch the edge of Fig. 11-612 cleaning blade. November 2003 © TOSHIBA TEC 11 - 11 e-STUDIO350/450 DRUM RELATED SECTON...
Page 200 (2) Release the latches and take off the transfer and separation chargers. Note: When installing the transfer and separation chargers, make sure not to deform the springs. Fig. 11-615 e-STUDIO350/450 DRUM RELATED SECTON 11 - 12 November 2003 © TOSHIBA TEC...
Page 201 1 connector each from the exhaust fan and sub-separation fan. Then take off the exhaust fan and sub-separation fan. Note: When installing, pay attention to the direction of the wind from the fan. Fig. 11-619 November 2003 © TOSHIBA TEC 11 - 13 e-STUDIO350/450 DRUM RELATED SECTON...
Page 202 Then take off the toner bag full detection sen- sor-1 with the whole bracket. Fig. 11-622 (4) Disconnect 1 connector and take off the toner bag full detection sensor-1 from the bracket. Fig. 11-623 e-STUDIO350/450 DRUM RELATED SECTON 11 - 14 November 2003 © TOSHIBA TEC...
Page 203 Fig. 11-626 Take off the developer unit cooling fan-2. Developer unit Note: cooling fan-2 When installing, pay attention to the direction of the wind from the fan. Fig. 11-627 November 2003 © TOSHIBA TEC 11 - 15 e-STUDIO350/450 DRUM RELATED SECTON...
Page 204 (2) Take off the SYS board with the whole case Chapter 2.5.2 [C]). (3) Remove 1 screw and disconnect 1 connector and take off the developer unit cooling fan unit-1. Fig. 11-630 e-STUDIO350/450 DRUM RELATED SECTON 11 - 16 November 2003 © TOSHIBA TEC...
Page 205 Fig. 11-632 Remove 3 screws on the front side and release the harnesses from 3 harness clamps. (10) Take off the bracket of the toner cartridge. Fig. 11-633 November 2003 © TOSHIBA TEC 11 - 17 e-STUDIO350/450 DRUM RELATED SECTON...
Page 206 (13) Disconnect 1 connector and remove 2 screws and take off the middle fan. Note: When installing, pay attention to the direction of the wind from the fan. Fig. 11-636 e-STUDIO350/450 DRUM RELATED SECTON 11 - 18 November 2003 © TOSHIBA TEC...
Page 207 Then take off the temperature / humidity sen- sor with the whole cover. Fig. 11-637 Remove 1 screw and take off the tempera- ture / humidity sensor from the cover. Fig. 11-638 November 2003 © TOSHIBA TEC 11 - 19 e-STUDIO350/450 DRUM RELATED SECTON...
Page 209: Development System
Developer sleeve (magnetic roller) Doctor blade Auto-toner sensor Drum thermistor ( chapter 11) Drum Drum thermistor Mixer-2 Doctor blade Developer sleeve Mixer-1 Auto-toner sensor [Sectional view of developer unit] Fig. 12-101 November 2003 © TOSHIBA TEC 12 - 1 e-STUDIO350/450 DEVELOPMENT SYSTEM...
Page 210: Functions
When the quantity of toner becomes insufficient, the toner motor is driven to supply the toner from the toner cartridge. e-STUDIO350/450 DEVELOPMENT SYSTEM 12 - 2 November 2003 © TOSHIBA TEC...
Page 211: Drive Circuit Of Toner Motor
— When both of PC6 (TNRM1-1) and PC7 (TNRM2-1) of ASIC GA become “L” level, the motor waits for the next command (the motor is stopped). November 2003 © TOSHIBA TEC 12 - 3 e-STUDIO350/450 DEVELOPMENT SYSTEM...
Page 212: Auto-Toner Circuit
LGC board Toner cartridge Toner Toner motor Control ASIC GA voltage signal converter IC38 MAIN Toner density signal IC24 Auto-toner sensor TA8428 Developer material IC51 Developer unit Fig. 12-401 e-STUDIO350/450 DEVELOPMENT SYSTEM 12 - 4 November 2003 © TOSHIBA TEC...
Page 213: Function Of Auto-Toner Sensor
Recovering from the toner-empty state: The toner motor is driven. →Toner is supplied from toner cartridge. →The auto-toner sensor output changes. →The toner density returns to normal value. →The toner-empty state is cleared. November 2003 © TOSHIBA TEC 12 - 5 e-STUDIO350/450 DEVELOPMENT SYSTEM...
Page 214 When the toner density is high— The ratio of the toner against the carrier in the developer material increases. →The magnetic resistance increases. →The detection output decreases. →The auto-toner output V decreases. e-STUDIO350/450 DEVELOPMENT SYSTEM 12 - 6 November 2003 © TOSHIBA TEC...
Page 215: Adjustment Using The Temperature / Humidity Sensor
Feedback control by drum thermistor in setting mode (08) Code Item to be controlled Default 08-840 Toner output control by drum thermistor November 2003 © TOSHIBA TEC 12 - 7 e-STUDIO350/450 DEVELOPMENT SYSTEM...
Page 216: Disassembly And Replacement
(B-1) Discharge of developer material (1) Slide the upper cover of developer unit to the direction of the arrow and take off the cover by releasing the latches. Fig. 12-504 e-STUDIO350/450 DEVELOPMENT SYSTEM 12 - 8 November 2003 © TOSHIBA TEC...
Page 217 (C-1) Front side Discharge the developer material Chapter 12.5 (B-1)). Make a note of the position where the polarity adjustment lever is pointing. (Mark the position if needed.) Scale Fig. 12-508 November 2003 © TOSHIBA TEC 12 - 9 e-STUDIO350/450 DEVELOPMENT SYSTEM...
Page 218 (C-2) Rear side (1) Remove 2 screws and take off the bracket. Fig. 12-511 (2) Remove 1 E-ring and 4 gears. (3) Take off the guide roller. Guide roller Fig. 12-512 e-STUDIO350/450 DEVELOPMENT SYSTEM 12 - 10 November 2003 © TOSHIBA TEC...
Page 219 Take off the front cover of developer unit Chapter 12.5 (C-1)). Remove 2 screws and take off the developer sleeve cover. Fig. 12-514 Remove 1 screw and take off the drum ther- mistor. Fig. 12-515 November 2003 © TOSHIBA TEC 12 - 11 e-STUDIO350/450 DEVELOPMENT SYSTEM...
Page 220 Fig. 12-518 (7) Replace the oil seal on the shaft on the de- veloper sleeve rear side, if necessary. *Replacement of Oil Seal ( Page 12-15) Oil seal Fig. 12-519 e-STUDIO350/450 DEVELOPMENT SYSTEM 12 - 12 November 2003 © TOSHIBA TEC...
Page 221 Chapter 12.5 [F]). Remove 1 E-ring and 1 bushing on the front side. Holder Remove 1 screw and holder. Oil seal *Replacement of Oil Seal ( Page 12-15) Fig. 12-523 November 2003 © TOSHIBA TEC 12 - 13 e-STUDIO350/450 DEVELOPMENT SYSTEM...
Page 222 (6) Remove 3 screws and take off the toner car- tridge cover. Fig. 12-525 (7) Remove 2 screws and disconnect 2 connec- tors. Then take off the toner cartridge drive unit. Fig. 12-526 e-STUDIO350/450 DEVELOPMENT SYSTEM 12 - 14 November 2003 © TOSHIBA TEC...
Page 223 Grease Apply the grease (Alvania No.2; amount of 2 rice grains) on entire surface of the oil seal Oil seal evenly. Note: Wipe off the excessive grease. Fig. 12-530 November 2003 © TOSHIBA TEC 12 - 15 e-STUDIO350/450 DEVELOPMENT SYSTEM...
Page 225: Fuser Unit / Paper Exit Section
The thermistors control the temperature of fuser roller and detect temperature abnormalities. If the tem- perature becomes excessively high, the thermostat is opened to stop the power supply to the IH coil. November 2003 © TOSHIBA TEC 13 - 1 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 226 This ther- mistor is not related to the temperature control of the fuser roller. e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 2 November 2003 © TOSHIBA TEC...
Page 227 This roller transports the paper from the fusing section to the receiving tray, paper exiting options or the ADU and is driven by the exit motor. November 2003 © TOSHIBA TEC 13 - 3 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 228: Heater Control Circuit
13.4 Heater Control Circuit 13.4.1 Configuration Fig. 13-401 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 4 November 2003 © TOSHIBA TEC...
Page 229: Heating Principle Of Ih Heater
Current input Monitoring input current Voltage input I/F circuit on LGC board Monitoring input current [ Block diagram of high frequency power supply ] Fig. 13-403 November 2003 © TOSHIBA TEC 13 - 5 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 230: Ih Control Circuit Interface
→ Error [C470] • Defective circuits → : “11: Abnormal circuit, IH coil abnormality” → Error [C490] • Ready state after the initialization: “01: Ready” e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 6 November 2003 © TOSHIBA TEC...
Page 231: Relation Between System Configuration And Ih Output
(*2) AC power should be input voltage when the equipment is warming up (The lower the voltage is, the longer the warming up time becomes). November 2003 © TOSHIBA TEC 13 - 7 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 232: Temperature Detection Section
The temperature of the ends are detected by the front edge thermistor, and when it reaches 280°C, the heater is automatically turned OFF regardless of the temperature of the area where the paper passes on. e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 8 November 2003 © TOSHIBA TEC...
Page 233 During printing Fixed time ( 08-205 ) Auto °C Shut Off Mode Fixed time ( 08-206 ) Temperature of fuser roller IH coil ON Fig. 13-405 November 2003 © TOSHIBA TEC 13 - 9 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 234 OFF again. After confirming that it is the IH control abnormality, correct the abnormality and clear the counter value (08-400) to "0" to start up the equipment normally. e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 10 November 2003 © TOSHIBA TEC...
Page 235 IH circuit abnormality, LGC circuit abnormality or thermistor abnormality. The thermistors automatically turn OFF the power when the temperature of IH coil exceeds the specified tempera- ture. Main thermistor PC4/AN4 Edge thermistor PC6/AN6 Fig. 13-406 November 2003 © TOSHIBA TEC 13 - 11 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 236 At paper jam 230°C or above 40°C or below On usual C440 * The figures in the “condition” section denote the priority of error checking. e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 12 November 2003 © TOSHIBA TEC...
Page 237: Abnormality In The Ih Control Circuit
CPU output level of the IH control circuit changes depending on the condition of IH coil. This output level goes through the photocoupler into the gate array. LGC board IH board 5V SW Gate array H1ERR1 H1ERR2 Fig. 13-407 November 2003 © TOSHIBA TEC 13 - 13 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 238 IH circuit abnormality: Abnormality in IH circuit IH coil abnormality: Temperature-detecting sensor in IH circuit is abnormal, or IH coil is open-circuited or wrongly in- stalled. e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 14 November 2003 © TOSHIBA TEC...
Page 239: Control Circuit Of Exit Motor
13.6 Exit Motor Drive The diagram shown below is the layout of the driving gears of the exit roller. Exit motor Exit roller ( ø15 ) Fig. 13-601 November 2003 © TOSHIBA TEC 13 - 15 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 240: Disassembly And Replacement
(2) Take off the fuser unit cover by pushing it to the right. Fig. 13-703 (3) Remove 2 screws and take off the fuser unit cooling fan unit. Fig. 13-704 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 16 November 2003 © TOSHIBA TEC...
Page 241 Open the fuser unit cover and transport guide. Pull out the shaft from both ends of transport guide and take off 8 exit fingers. Fig. 13-708 November 2003 © TOSHIBA TEC 13 - 17 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 242 (3) Release the harness from the harness guide of the cover on the rear side. (4) Remove 1 screw and take off the cover on the rear side. Fig. 13-712 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 18 November 2003 © TOSHIBA TEC...
Page 243 Fig. 13-713 Remove 2 screws on the front side. Fig. 13-714 Take off the transport guide. Fig. 13-715 Take off the cleaning unit. Fig. 13-716 November 2003 © TOSHIBA TEC 13 - 19 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 244 (3) Release the harness from the harness guide of the cover on the rear side. (4) Remove 1 screw and take off the cover on the rear side. Fig. 13-720 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 20 November 2003 © TOSHIBA TEC...
Page 245 After that, remove C-ring, gear and bush- lever Gear ing in order. Fig. 13-723 Remove 2 screws and take off the coil holder on the front side. Fig. 13-724 November 2003 © TOSHIBA TEC 13 - 21 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 246 Note: When installing, be careful not to deform the Fig. 13-727 thermistors or the frame (plate). e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 22 November 2003 © TOSHIBA TEC...
Page 247 Chapter 2.5.1 [P]). Take off the SYS board with the whole case Chapter 2.5.2 [C]). Remove 3 screws and take off the IH board cover. Fig. 13-731 November 2003 © TOSHIBA TEC 13 - 23 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 248 (1) Take off the IH control PC board with the whole bracket ( Chapter 13.7 (M-2)). (2) Remove 1 screw and take off the fan cover. Fig. 13-734 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 24 November 2003 © TOSHIBA TEC...
Page 249 Remove E-rings and bushings on both sides Metal bushing (metal bushing on front side) and take off the Spring upper exit roller. Fig. 13-738 November 2003 © TOSHIBA TEC 13 - 25 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION...
Page 250 (6) Take off the lower exit roller. Fig. 13-739 e-STUDIO350/450 FUSER UNIT / PAPER EXIT SECTION 13 - 26 November 2003 © TOSHIBA TEC...
Page 251: Automatic Duplexing Unit (Adu)
The ADU mainly consists of the transport rollers and their drive system, paper guide and ADU entrance/ exit sensor. Upper transport roller Entrance guide ADU entrance sensor Paper guide Middle transport roller ADU motor ADU exit sensor Exit guide Lower transport roller Fig. 14-101 November 2003 © TOSHIBA TEC 14 - 1 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT...
Page 252: Description Of Operations
The operation of the duplex printing differs depending on the size of the paper; single-paper circulation and alternateness circulation. The figures in the following pages show the circulating operations during duplex copying. The numbers in the figures indicate the page numbers. e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT 14 - 2 November 2003 © TOSHIBA TEC...
Page 253 ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7 ) ( 8 ) ( 9 ) Fig. 14-201 November 2003 © TOSHIBA TEC 14 - 3 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT...
Page 254 2nd sheet ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7 ) ( 8 ) Fig. 14-202 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT 14 - 4 November 2003 © TOSHIBA TEC...
Page 255 ( 7 ) ( 8 ) ( 9 ) ( 10 ) ( 11 ) ( 12 ) ( 13 ) ( 14 ) ( 15 ) Fig. 14-203 November 2003 © TOSHIBA TEC 14 - 5 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT...
Page 256 Timing chart for duplex copying from upper drawer (A4, 3 sheets) e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT 14 - 6 November 2003 © TOSHIBA TEC...
Page 257 Timing chart for duplex copying from upper drawer (A3, 1 sheet) November 2003 © TOSHIBA TEC 14 - 7 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT...
Page 258: Drive Of Adu
The ADU clutch is then turned ON and the middle transport roller and lower transport roller are rotated. Upper transport roller ADU motor Middle transport roller ADU clutch Lower transport roller Fig. 14-301 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT 14 - 8 November 2003 © TOSHIBA TEC...
Page 259: Flow Chart
ADU motor ON ADU motor stopped ADU clutch ON ADU exit sensor check the arrival ADU transport jam ( E520 ) Specified time has passed Fig. 14-401 November 2003 © TOSHIBA TEC 14 - 9 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT...
Page 260 ON? ADU misfeeding ( E110 ) Registration in process Registration process completed ADU motor stopped ADU clutch OFF Next paper is ready for the registration Fig. 14-402 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT 14 - 10 November 2003 © TOSHIBA TEC...
Page 261: Disassembly And Replacement
Remove 2 screws and take off the right rear hinge cover. Right rear hinge cover Screw Fig. 14-503 Remove 2 screws and take off the right lower cover. Right lower cover Screw Fig. 14-504 November 2003 © TOSHIBA TEC 14 - 11 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT...
Page 262 (2) Take off the ADU inside rear cover Chapter 14.5 [B]). (3) Disconnect the connector and release the latch to take off the ADU opening / closing switch. Fig. 14-508 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT 14 - 12 November 2003 © TOSHIBA TEC...
Page 263 Spring ADU cover ( Chapter 14.5 [A] to 14.5 [E]). Remove the spring. Fig. 14-511 Remove the screw and release the rear latch. Screw Rear latch Fig. 14-512 November 2003 © TOSHIBA TEC 14 - 13 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT...
Page 264 / closing switch, paper guide, and ADU cover ( Chapter 14.5 [A] to 14.5 [E]). (2) Disconnect 6 connectors and release 4 lock supports to take off ADU board. ADU board Fig. 14-516 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT 14 - 14 November 2003 © TOSHIBA TEC...
Page 265 Take off the ADU motor ( Chapter 14.5 [J]). Take off the ADU gear unit Screw Chapter 14.5 [K]). Remove 1 screw and disconnect the ground Connector wire. Disconnect 1 connector. Fig. 14-520 November 2003 © TOSHIBA TEC 14 - 15 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT...
Page 266 Screw Opening /Closing lever Fig. 14-522 (3) Remove the spring. Spring Fig. 14-523 (4) Remove the screw and release the rear latch. Screw Rear latch Fig. 14-524 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT 14 - 16 November 2003 © TOSHIBA TEC...
Page 267 Take off the ADU, ADU inside rear cover, ADU opening / closing switch, paper guide, and ADU cover ( Chapter 14.5 [A] to 14.5 [E]). Take off the ADU board. ADU board Fig. 14-528 November 2003 © TOSHIBA TEC 14 - 17 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT...
Page 268 (2) Take off the ADU motor, the ADU gear unit and the ADU clutch ( Chapter 14.5 [J] to 14.5 [L]). (3) Remove the clip on the rear side. Clip Fig. 14-532 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT 14 - 18 November 2003 © TOSHIBA TEC...
Page 269 1. The roller has a one-way clutch inside. Roller When installing rollers, pay attention to the E-ring rotation direction. 2. Replace 2 rollers at a time. Fig. 14-535 November 2003 © TOSHIBA TEC 14 - 19 e-STUDIO350/450 AUTOMATIC DUPLEXING UNIT...
Page 271: Power Supply Unit
If the protection circuit is activated (except the case the fuse is blown out), remove the causes such as short-circuit. Turn ON the power again 1 minute later to clear the overcurrent protection. November 2003 © TOSHIBA TEC 15 - 1 e-STUDIO350/450 POWER SUPPLY UNIT...
Page 272: Output Channel
Pin 9 Output to the SYS board -12VB : CN412 Pin 3 Output to the SYS board (5) +24V +24VB : CN413 Pin 13 Output to the FAX board e-STUDIO350/450 POWER SUPPLY UNIT 15 - 2 November 2003 © TOSHIBA TEC...
Page 273 For the LGC board, PFP/LCF (via LGC board), Bridge unit / Job separator / Offset tray (via LGC board) CN415 For the SLG board, RADF CN416 For the finisher CN418 For the power supply cooling fan November 2003 © TOSHIBA TEC 15 - 3 e-STUDIO350/450 POWER SUPPLY UNIT...
Page 274: Fuse
Bridge unit / Job separator / Offset tray +24VD3 RADF F5:4A(Semi time-lag) +24VD4 Scan motor F6:4A(Semi time-lag) SLG board cooling fan Exposure lamp (Lamp inverter) +24VD5 Finisher F7:5A(Semi time-lag) e-STUDIO350/450 POWER SUPPLY UNIT 15 - 4 November 2003 © TOSHIBA TEC...
Page 275: Configuration Of Power Supply Unit
15.5 Configuration of Power Supply Unit November 2003 © TOSHIBA TEC 15 - 5 e-STUDIO350/450 POWER SUPPLY UNIT...
Page 276: Sequence Of Power Supply
+12VB, -12VB (Linked with main switch) +24VB (Linked with main switch) +24VD (Linked with door switch) Lower limit of each rated voltage or higher +4.95V(R.V. +5.1V) +11.4V(R.V. +12V) -11.4V(R.V. -12V) -21.6V(R.V.+24V) e-STUDIO350/450 POWER SUPPLY UNIT 15 - 6 November 2003 © TOSHIBA TEC...
Page 284 (11) PWA-F-FIL (* NAD/SAD/TWD models: Standard) (12) PWA-F-FUS (* ASD/AUD/CND models: Standard, MJD model: Option) e-STUDIO350/450 PC BOARDS 16 - 6 November 2003 © TOSHIBA TEC...
Page 286 1-1, KANDA NISHIKI-CHO, CHIYODA-KU, TOKYO, 101-8442 JAPAN...

This manual is also suitable for:

E-studio450

Toshiba e-STUDIO350 Service Manual

1 Specifications / Accessories / Options / Supplies

2 Outline of the Machine

3 Copy Process

4 General Operation

5 Control Panel

6 Scanner

7 Image Processing

8 Laser Optical Unit

9 Paper Feeding System

10 Drive System

11 Drum Related Section

12 Development System

13 Fuser Unit / Paper Exit Section

14 Automatic Duplexing Unit (Adu)

15 Power Supply Unit

16 Pc Boards

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