Mitsubishi Electric HS-U449 Service Manual
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Mitsubishi Electric HS-U449 Service Manual

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Tape Format
: VHS 1/2" high-density video
Power Source
: 120 V AC ; 60 Hz
Power Consumption
: Approx. 20 W (STBY 3 W)
Video Signal System
: EIA standard ; NTSC color
Video Recording System
: VHS standard
Luminance
: Frequency modulation recording
Color Signal
: Low frequency conversion
Hi-Fi Audio
: VHS standard
Recording System
Linear Audio Track
: 1 track
Tape Speed
: 1-5/16 i.p.s (standard play)
Record/Playback Time
: 120 min. with T-120 video cassette
Record/Playback System
Video
: 4 heads
Hi-Fi Audio
: 2 heads
Monaural Audio Control
: 1 head
Erase
: 1 head
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Ave. Irvine, California 92618 U.S.A.
Copyright C 2003 Mitsubishi Digital Electronics America, Inc. All Rights Reserved.
Only cassettes marked VHS can be used with this video cassette recorder.
SPECIFICATIONS
cassette tape
sub-carrier phase shift recording
Azimuth helical scanning system
7/16 i.p.s (extended play)
(SP mode)
360 min. with T-120 video cassette
(EP mode)
VIDEO CASSETTE RECORDER
Video Input
Audio Input
Video Output
Audio Output
Tuner
VHF
UHF
CATV
Operating Temperature
Relative Humidity
RF Channel Output
Weight
Dimensions
Timer Program Capacity
Deck
• Weight and dimensions shown are approximate.
• Design and specifications are subject to change without notice.
MODEL
HS-U449
: 0.5 - 2.0 V(p-p), 75 Ω unbalanced
RCA Pin Jack
: 346 mV(rms), 47 kΩ unbalanced
RCA Pin Jack
: 1.0 V(p-p), 75 Ω unbalanced
RCA Pin Jack
: 346 mV(rms), 1 kΩ unbalanced
RCA Pin Jack
: 54 - 88 MHz, 174 - 216 MHz
: 470 - 806 MHz
: 54 - 88 MHz, 90 - 804 MHz
: 41 - 104°F
: 30 - 80%
: Channel 3 or 4 switchable
: Approx. 8.0 lbs. (3.6 kg)
: 16.7"(W) × 3.7"(H) × 11.9"(D)
425 (W) × 93 (H) × 302 (D) mm
: 1 month programmable
/ 8 programs
: α Deck
2003
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  • Page 1 2003 VIDEO CASSETTE RECORDER MODEL HS-U449 Only cassettes marked VHS can be used with this video cassette recorder. SPECIFICATIONS : 0.5 - 2.0 V(p-p), 75 Ω unbalanced Tape Format : VHS 1/2” high-density video Video Input cassette tape RCA Pin Jack Power Source : 120 V AC ;...
  • Page 2 CONTENTS - FILE "COVERPGE" - IDLER 2 UNIT..........9 SPECIFICATIONS ............1 2-15. CAPSTAN BRAKE SPRING, CONTENTS..............2 CAPSTAN BRAKE ASSY ......11 GLOSSARY OF ABBREVIATIONS.........4 2-16 FC HOLDER, MOTOR HOLDER, LOADING WORM, - FILE "DISASSY" - LOADING MOTOR ASSY, SAFETY PRECAUTIONS ..........1 WORM WHEEL ...........12 CONNECTION ..............3 2-17 PINCH ARM CAP, PINCH UNIT ....13 DISASSEMBLY..............4...
  • Page 3 CONTENTS 3-2-6 Tape Running Condition at the GUIDE ROLLERs (Check1) ....32 3-2-7 Tape Running Condition at the GUIDE ROLLERs (Check 2) ....32 A/C HEAD Adjustment .........33 3-3-1 Slant Adjustment of A/C HEAD ....33 3-3-2 Azimuth and Height Adjustment of A/C HEAD ............33 Phase Adjustment ........34 Tape wrinkle check........34 Servicing Tape Jam...

  • Page 4: Glossary Of Abbreviations

    GLOSSARY OF ABBREVIATIONS : Audio/Control JSTCLK : Just Clock A-PB : Audio Play Back A-REC : Audio Recording LIN-IN : Linear Audio In : Audio Erase LIN-OUT : Linear Audio Out AENV : Audio Envelope LMUTE : Linear Mute : Automatic Frequency Control : Long Play : Audio Flip Flop AFTV...

  • Page 5: Safety Precautions

    SAFETY PRECAUTIONS INTRODUCTION SAFETY NOTICE This manual provides service information for the adjustments Before returning VCR to the customer a safety check of the of mechanical and electrical operations. entire VCR should be made. The service technician must be Due to design modifications, the servicing procedures and sure that no protective device built into the instrument by the data given in this manual are subject to possible change manufacturer has become defective or inadvertently...
  • Page 6 2. Hot Check The test sequence, with reference to the measuring (2) Close switch S1, energizing the VCR, and immediately circuit in the figure is as follows: after closing the switch, measure leakage current using (1) With switch S1 open, connect the VCR to the measuring both positions of switch S2, and with the switching circuit.
  • Page 7 CONNECTION Connecting separate antennas (UHF/VHF) Now that you’ve completed the antenna connections to your Connecting the Television VCR, you’re ready to connect the VCR to the TV. To connect separate UHF/VHF antennas to the VCR: Because every television is different (especially older model 1.
  • Page 8 DISASSEMBLY 1. Removal of Top Cover Top Cover 1. Remove the two Top Cover fastening screws (a) shown in Fig. 1 and remove the Top Cover in the direction shown by arrow. 2. Removal of Front Panel 1. Remove the Top Cover. (Refer to Para.
  • Page 9 3. Removal of Bottom Panel 1. Remove the Top Cover. (Refer to Para. 1 of the DISASSEMBLY.) 2. Remove the two fastening screws (a) shown in Fig. 2. 3. Turn the set upside down as shown in Fig. 3. 4. Slide and lift the Bottom Panel in the direction of the arrows paying attention to the five catches (b) to remove Fig.

  • Page 10: Removal Of Deck Assy

    4. Removal of DECK ASSY 1. Remove the Top Cover. (Refer to Para. 1 of the DISASSEMBLY.) 2. Remove the Front Panel. (Refer to Para. 2 of the DISASSEMBLY.) 3. Short-circuit the cathode side of D927 and the GND of Shield Plate the DECK ASSY using the jig shown below.

  • Page 11: How To Execute Circuit Board Service

    HOW TO EXECUTE CIRCUIT BOARD SERVICE CAUTION: BEFORE ATTEMPTING TO REMOVE OR REPAIR ANY PCB, UNPLUG THE POWER CORD FROM THE A.C. SOURCE. PCB - MAIN LOCATION OF PRINT CIRCUIT BOARDS Note : • Take caution when removing flat cables to prevent any contact problem.
  • Page 12 2. PCB-MAIN 1. Remove the Bottom Panel. (Refer to Para. 3 of the DISASSEMBLY.) 2. Remove the DECK ASSY. (Refer to Para. 4 of the DISASSEMBLY.) 3. Remove the two screws (a) shown in Fig. 8. 4. Remove the Holder for the AC Power Cord from the Base Chassis shown in Fig.

  • Page 13: Chip Parts Replacement

    CHIP PARTS REPLACEMENT CHIP PARTS REPLACEMENT 2. Removal of Chip Parts (Transistors) Some resistors, shorting jumpers (0Ω resistor), ceramic A. Melt the solder of one lead. Lift the side of that lead capacitors, transistors and diodes are chip parts. upward. When replacing these parts, note the following cautions.

  • Page 14: Mechanical Adjustment And Replacement

    MECHANICAL ADJUSTMENT AND REPLACEMENT 1. DECK Cleaning 1-2. Tape Running System Clean the following parts of the Tape Running System. The following parts require cleaning whenever serviced in 1. TENSION PIN order to maintain satisfactory performance. 2. F/E HEAD 1-1. VIDEO HEAD 3.
  • Page 15 2. Replacement of Major Parts 2-1. CLEANING ARM, FELT RING SET POSITION : Normal (Removal) CLEANING 1. Release the two catches (a) of the CLEANING ARM shown in Fig. 2-1 to remove the CLEANING ARM. (Installation) 1. Install the CLEANING ARM shown in Fig. 2-1. 2-2.

  • Page 16: Bottom Assy

    2-3. BOTTOM ASSY Hole in MAIN PLATE ASSY SET POSITION : Normal Remove the following part before replacing the BOTTOM ASSY. Refer to the corresponding item to install it. • STAY PLATE (Item 2-2) (Removal) 1. Move the WORM WHEEL in Fig. 2-3-1 in the direction shown by arrow A.

  • Page 17: Insert Guide (Tu)

    2-4. INSERT GUIDE (TU) DECK POSITION : Normal Remove the following parts before replacing the INSERT INSERT GUIDE (TU) GUIDE (TU). Refer to the corresponding items to install them. • STAY PLATE (Item 2-2) • BOTTOM ASSY (Item 2-3) (Removal) 1.

  • Page 18: Rec Holder, Rec Lever, Rec Spring

    2-6. REC HOLDER, REC LEVER, REC SPRING SPRING REC LEVER DECK POSITION : Upside down (Removal) 1. Remove the screw (a) fastening the REC HOLDER shown in Fig. 2-6 to remove the REC HOLDER. 2. Release the REC SPRING shown in Fig. 2-6 from the REC HOLDER catch (b) of the REC HOLDER to remove the REC LEVER.

  • Page 19: A/C Head Unit

    2-8. A/C HEAD UNIT LEAD CONNECTOR DECK POSITION : Normal (Removal) 1. Remove the LEAD CONNECTOR of the A/C HEAD UNIT shown in Fig. 2-8. A/C HEAD UNIT 2. Remove the two screws (a) fastening the A/C HEAD UNIT shown in Fig. 2-8 to remove the A/C HEAD Head UNIT.
  • Page 20 2-10.SENSOR COVER (TU) DECK POSITION : Normal (Removal) 1. Release the catch (a) of the SENSOR COVER (TU) shown in Fig. 2-10 to remove the SENSOR COVER (TU). (Installation) 1. Install the SENSOR COVER (TU) shown in Fig. 2-10. SENSOR COVER (TU) Fig.
  • Page 21 2-12.REV UNIT (TU), REV UNIT (TU) REV UNIT (SP) DECK POSITION : Upside down (Removal) REV UNIT (SP) 1. Release the two catches (a) of the REV UNIT (TU) shown in Fig. 2-12 to remove the REV UNIT (TU). 2. Release the two catches (b) of the REV UNIT (SP) shown in Fig.
  • Page 22 2-14.REEL BELT, PULLEY BUSH, THRUST REEL BELT WASHER, BELT PULLEY, SHIFT SLIDER, PULLEY GEAR ASSY, SLIP PULLEY BUSH GEAR, SLIP SPRING, SLIP WASHER, THRUST WASHER, SLIP ADJUSTER, THRUST WASHER IDLER 2 UNIT BELT PULLEY DECK POSITION : Upside down Pull in the direction (Removal) of arrow remove it from the...
  • Page 23 9. Install the units from the SLIP WASHER to the REEL BELT shown in Fig. 2-14-1. SLIP ADJUSTER Note1 : Be sure to replace the removed PULLEY BUSH Center of the with a new one. BELT PULLEY Note2 : Attach the SLIP SPRING with its straight end facing the SLIP GEAR side.
  • Page 24 2-15.CAPSTAN BRAKE SPRING, CAPSTAN BRAKE ASSY CAPSTAN BRAKE ASSY DECK POSITION : Upside down (Removal) 1. Remove the CAPSTAN BRAKE SPRING shown in CAPSTAN MOTOR Fig. 2-15. 2. Remove the catch (a) of the CAPSTAN BRAKE CAPSTAN BRAKE SPRING ASSY shown in Fig. 2-15 to remove the CAPSTAN BRAKE ASSY.
  • Page 25 2-16.FC HOLDER, MOTOR HOLDER, LOADING MOTOR ASSY LOADING WORM, LOADING MOTOR ASSY, WORM WHEEL DECK POSITION : Normal (Removal) 1. Release the two catches (a) of the FC HOLDER LOADING FC HOLDER WORM shown in Fig. 2-16-1 to remove the FC HOLDER. 2.
  • Page 26 2-17.PINCH ARM CAP, PINCH UNIT DECK POSITION : Normal PINCH ARM (Removal) 1. Release the two catches (a) of the PINCH ARM CAP Part shown in Fig. 2-17 to remove the PINCH ARM CAP. 2. Remove the PINCH UNIT shown in Fig. 2-17. Part (Installation) PINCH UNIT...
  • Page 27 3. Apply grease (MULTEMP AC-DM)[859D055O90] to the specified parts on the MAIN PLATE ASSY in Fig. Hole 2-18-1. 4. Apply grease (MULTEMP AC-DM)[859D055O90] to the specified parts on the DOOR ARM in Fig. 2-18-1. MAIN CAM 5. Install the DOOR ARM. 6.
  • Page 28 5. Rotate the MAIN CAM shown in Fig. 2-19-1 in the BRAKE SPRING direction shown by arrow B. Move the BRAKE CAM PLATE to hook it to the three catches (a) of the MAIN Insert the BRAKE SPRING under the Catch. PLATE ASSY.
  • Page 29 2-21.MAIN CAM, GUIDE ARM (TU), MAIN CAM BRAKE LEVER, LB PIN DECK POSITION : Normal Remove the following parts before replacing the MAIN Follower pin CAM, GUIDE ARM (TU), and LEVER. Refer to the corresponding items to install them. GREASE BRAKE LEVER •...
  • Page 30 2-22.L/D LOCK LEVER L/D LOCK LEVER DECK POSITION : Normal Remove the following parts before replacing the L/D LOCK LEVER. Refer to the corresponding items to install them. • STAY PLATE (Item 2-2) • BOTTOM ASSY (Item 2-3) • MOTOR HOLDER (Item 2-16) •...

  • Page 31: Belt Lever, Belt Adjuster

    2-24. BELT LEVER, BELT ADJUSTER DECK POSITION : Normal Remove the following parts before replacing the BELT BELT LEVER LEVER and BELT ADJUSTER. Refer to the corresponding items to install them. BELT ADJUSTER • STAY PLATE (Item 2-2) • BOTTOM ASSY (Item 2-3) •...
  • Page 32 (Installation) 1. Apply grease (MULTEMP AC-DM) [859D055O90] to the specified parts on the MAIN PLATE ASSY in Fig. 2-25. 2. Install the REEL DISK (SP side). 3. Install the TENS AXIS HOLDER. Note : Install the TENS AXIS HOLDER so that the catch (a) for the TENSION ARM is positioned on the front (F/L ARM ASSY side).
  • Page 33 (Installation) Note : Install the BRAKE BELT (TU) so that its felt side touches the REEL DISK (TU side). The grease applied to the BRAKE CAM PLATE and the MAIN PLATE ASSY shall not adhere to the felt side of the BRAKE BELT (SP). 1.
  • Page 34 2-29.CHARGE SPRING, SWING LEVER, CHARGE ASSY CHARGE SPRING DECK POSITION : Normal Remove the following parts before replacing the CHARGE ASSY CHARGE SPRING, SWING LEVER, and CHARGE ASSY. Refer to the corresponding items to install them. • STAY PLATE (Item 2-2) •...
  • Page 35 (Installation) 1. Apply grease (MULTEMP AC-DM)[859D055O90] to LOADING ARM ASSY (TU) the specified parts on the MAIN PLATE ASSY in Fig. 2-30-1. 2. Apply grease (MULTEMP AC-DM)[859D055O90] to the specified parts on the LOADING ARM ASSY (TU) in Fig. 2-30-2. 3.
  • Page 36 (Installation) A/L LEVER Note : Install the LOADING ARM ASSY (TU) and LOADING ARM ASSY (SP) in accordance with the following procedure after installing the A/L LEVER. Back 1. Apply grease (MOLYKOTE G PASTE) [859D055O50] to the specified parts on the MAIN PLATE ASSY in Fig.
  • Page 37 2-32.TAPE GUIDE ASSY (SP), TAPE GUIDE ASSY (TU) TAPE GUIDE ASSY (TU) TAPE GUIDE ASSY (SP) DECK POSITION : Normal Remove the following parts before replacing the TAPE GUIDE ASSY (SP) and (TU). Refer to the corresponding items to install them. •...
  • Page 38 2-33.DRUM CLAMPER, DRUM ASSY LEAD CONNECTOR DECK POSITION : Normal (Removal) 1. Disconnect the LEAD CONNECTOR of the DRUM DRUM ASSY with ASSY shown in Fig. 2-33-1. DRUM CLAMPER 2. Remove the two screws (a and b) fastening the DRUM CLAMPER shown in Fig. 2-33-1 to remove the DRUM ASSY with the DRUM CLAMPER.
  • Page 39 2-34.DRUM MOTOR STATOR, BRUSH Side View of END RING SPRING, SPACER, ROTOR CASE, END RING, BRUSH, UPPER DRUM DRUM MOTOR ASSY This side down. STATOR DECK POSITION : Normal (Removal) LEAD CONNECTOR 1. Disconnect the LEAD CONNECTOR of the DRUM ASSY shown in Fig.
  • Page 40 (Installation) 1. Install the SPACER shown in Fig. 2-34-1. Note : Be sure to use a new SPACER supplied with the new UPPER DRUM ASSY. 2. Install the UPPER DRUM ASSY shown in Fig. 2-34-1. 3. Install the END RING so that the reference hole (A) of the END RING shown in Fig.
  • Page 41 2. Rotate the WORM WHEEL in Fig. 2-35-2 in the direction shown by arrow A so that the GUIDE ARM (TU) moves in the direction of arrow B and expose the three screws (a) fastening the CAPSTAN MOTOR. WORM WHEEL 3.
  • Page 42 3. Interchangeability Adjustment of the Mechanism Note 1 : Tracking may need to be preset during TENSION ARM interchangeability adjustment of the mechanism. Digital tracking is preset by short circuiting TP5A and TP5B on the PCB-MAIN. Note 2 : When performing the adjustments in the TENSION POLE PLAYBACK mode, use the staircase signal of an alignment tape, unless otherwise specified.
  • Page 43 3-2. Check and Adjustment of the FM Envelope 3-2-1. GUIDE ROLLER Adjustment Check 1. Play back an alignment tape (NM6KE2 : 859C339O90). 2. Preset the tracking. 3. Make sure that the FM waveform is flat as shown by Waveform (A). 4.
  • Page 44 3-2-4. Coarse Adjustment of Phase 1. Play back an alignment tape (NM6KE2 : 859C339O90). 2. Preset the tracking. 3. Check the FM waveform after performing “3-2-1. GUIDE ROLLER Adjustment Check.” Screw D 4. If the amplitude level of the FM waveform is low as shown by Waveform (F) in Fig.
  • Page 45 3-2-6. Tape Running Condition at the GUIDE ROLLERs (Check 1) GUIDE ROLLER 1. Play back an Alignment Tape. Tape [NM6KE2: 859C339O90] 2. Check visually that there is a space between the tape and the lower flange of the GUIDE ROLLER (SP) and the GUIDE ROLLER (TU).
  • Page 46 3-3. A/C HEAD Adjustment 3-3-1. Slant Adjustment of A/C HEAD 1. Play back a blank tape. Screw C 2. Slowly turn Screw C shown in Fig. 3-3-1 counter- clockwise to slightly crease the bottom of the tape at the lower flange of the GUIDE POLE (TU). 3.
  • Page 47 3-4. Phase Adjustment 1. Play back an alignment tape (NC1KS : 859C339O80). 2. Preset the tracking. Screw D 3. Loosen Screw D and E shown in Fig. 3-4-1. Insert a Phillips screwdriver into the hole in the MAIN PLATE ASSY (Part A) and move the A/C PLATE form side to side to set the amplitude level of the FM waveform to Tape maximum.
  • Page 48 4. Servicing for Tape Jam WORM WHEEL during the Loading Process If the mechanism shall be locked because of tangled tape, remove the tape by rotating the WORM WHEEL of the LOADING MOTOR shown in Fig. 4 in the direction shown by arrow A. Fig.

  • Page 49: Service Can Be Executed With The Ee Picture Displayed

    SERVICE CAN BE EXECUTED WITH THE EE PICTURE DISPLAYED 1. Short-circuit the cathode side of D927 and the GND of the DECK ASSY using the jig shown in Fig. 2. 2. Remove the DECK ASSY. 3. Connect TP5X and TP5Y with a jumper. Note1: Short-circuit the test points before turning on the power.

  • Page 50: When Replacing Ic5A0

    HOW TO INITIALIZE THE E PROM A replacement E PROM is not initialized before shipping, so the E PROM must be initialized when replaced. Initialize the E PROM by following the steps below. 1. Press and hold the POWER button on the set for 8 seconds. 2.
  • Page 51 [ Servo circuit ] Adjustment purpose Video switch over timing during playback. 1. Playback Switching Point Symptom when Switching noise or jitter in the playback picture. incorrectly adjusted Measuring instrument and condition VCR set up condition 1. Play back an Alignment Tape. (NS1, stair step) 2.

  • Page 52: Parts List

    PARTS LIST - 1 -...

  • Page 53: Cabinet Assembly

    1. CABINET ASSEMBLY - 2 -...
  • Page 54 1. CABINET ASSEMBLY : Critical Component ITEM PARTS NO. PARTS NAME DESCRIPTION CABINET ASSEMBLY 968C049O06 TOP COVER ASSY 3 × 10 669D501O10 SCREW 4 × 12 46LA005 669D221O40 SCREW 572D385O10 F/L SPRING 752C678O40 CASSETTE DOOR ASSY 573D078O10 FRONT EARTH SPRING 701B456O50 FRONT UNIT 752C676O40...

  • Page 55: Packing Parts

    2. PACKING PARTS ACCESSORY - 4 -...
  • Page 56 2. PACKING PARTS ITEM PARTS NO. PARTS NAME DESCRIPTION PACKING PARTS 831D190O30 PACKING SHEET 800X800 803A585O10 CUSHION 802B827O40 PACKING CASE – – – – – – – ACCESSORY ACCESSORY 939P755O20 REMOTE HAND UNIT 243C273O30 CABLE – – – – – – – BATTERY –...
  • Page 57 3. ELECTRICAL PARTS : Critical Components SYMBOL PARTS SYMBOL PARTS PARTS NAME DESCRIPTION PARTS NAME DESCRIPTION INTEGRATED CIRCUITS FILTERS IC2A0 270P785O10 IC HA118217NF L901 351P172O10 LINE FILTER SS11V-10062 IC3A0 275P410O10 IC AN3662FBP IC5A0 275P599O20 IC M37760MCH4D2GP COILS IC5A1 263D003O30 MOS IC CAT24WC04J-TE13 IC5A4 272P235O10 IC TA7291S...
  • Page 58 : Critical Components SYMBOL PARTS SYMBOL PARTS PARTS NAME DESCRIPTION PARTS NAME DESCRIPTION C312 181P717O40 ELECTROLYTIC CAPACITOR 04W 35V 10µF-M C313 181P718O80 ELECTROLYTIC CAPACITOR 04W 50V 4.7µF-M SWITCHES C314 181P717O40 ELECTROLYTIC CAPACITOR 04W 35V 10µF-M S810 432P203O30 KEY BOARD SWITCH C315 181P714O50 ELECTROLYTIC CAPACITOR 04W 16V 22µF-M S811...

  • Page 59: Deck Assembly

    DECK ASSEMBLY - 1 -...
  • Page 60 G-022 DECK ASSEMBLY N-012 DECK ASSEMBLY-1 N-011 A-022 B-025 N-013 B-010 G-072 G-201 G-075 G-201 G-067 B-015 G-201 G-072 M-037 G-074 G-091 A-025 G-201 H-051 A-026 G-012 H-011 H-012 G-079 H-031 A-023 H-021 M-033 M-012 M-025 G-071 M-033 M-022 G-049 S-011 M-021 M-026...
  • Page 61 DECK ASSEMBLY-1 ∗ Settled Service Parts ∗ ITEM PARTS NO. ADDRESS PARTS NAME DESCRIPTION Qt. A-022 948B432O01 DRUM ASSY A-023 592B552O10 DRUM CLAMPER 641B903O10 K H-2 A-025 CLEANING ARM 2.6 × 4 669D556O10 K F-2 A-026 SCREW 925B115O13 K G-1 B-010 UPPER DRUM ASSY 927B955O06 K G-1...
  • Page 62 DECK ASSEMBLY-1 ∗ Settled Service Parts ∗ ITEM PARTS NO. ADDRESS PARTS NAME DESCRIPTION Qt. M-012 948D084O01 K A-3 TAPE GUIDE ASSY (SP) SUPPLY M-013 948D086O01 K B-3 TAPE GUIDE ASSY (TU) TAKE UP M-021 594C258O10 GUIDE CATCHER (SP) SUPPLY M-022 594C259O10 GUIDE CATCHER (TU) TAKE UP...
  • Page 63 - 5 -...
  • Page 64 DECK ASSEMBLY DECK ASSEMBLY-2 G-101 M-031 G-093 M-014 G-201 G-088 G-060 G-031 G-212 G-214 G-018 G-056 G-043 G-215 G-057 G-025 G-061 G-017 G-096 G-035 G-081 G-211 G-216 G-066 G-044 G-034 G-019 G-094 G-201 G-042 M-034...
  • Page 65 DECK ASSEMBLY-2 ∗ Settled Service Parts ∗ ITEM PARTS NO. ADDRESS PARTS NAME DESCRIPTION Qt. G-017 948D089O01 K H-4 LOADING ARM ASSY (SP) SUPPLY G-018 948D090O01 K G-3 LOADING ARM ASSY (TU) TAKE UP G-019 622D916O20 K B-5 IDLER 2 UNIT G-025 948D098O03 K B-4 PULLEY GEAR ASSY G-031 622D800O10 K E-3...
  • Page 70 PRODUCT SAFETY NOTICE IN THE SERVICE MANUAL. DON'T DEGRADE THE SAFETY OF THE RECEIVERS THROUGH IMPROPER SERVICING. CONTENTS PCB-INTERCONNECT ···················· C-1 (POWER) PCB-MAIN ························ C-2 (HIFI) PCB-MAIN ······························ C-3 (TIMER/OPEKEY) PCB-MAIN ·········· C-4 PCB-OPE ·········································· C-4 (Y/C/A) PCB-MAIN ···························· C-5 (CONT) PCB-MAIN ··························· C-6 HS-U449...
  • Page 71 PC901 L904 C912 ON3131-R / TLP421 C921 C936 Q909 R911 R915 IC901 CONTENTS PCB-INTERCONNECT ···················· C-1 (POWER) PCB-MAIN ························ C-2 (HIFI) PCB-MAIN ······························ C-3 (TIMER/OPEKEY) PCB-MAIN ·········· C-4 PCB-OPE ·········································· C-4 (Y/C/A) PCB-MAIN ···························· C-5 (CONT) PCB-MAIN ··························· C-6 HS-U449...
  • Page 72 C3A7 C3F4 R3A4 R3A5 R3A6 R3A7 F-A-IN-R R3A0 R3A1 F-A-IN-L R3A2 R3A3 CONTENTS PCB-INTERCONNECT ···················· C-1 (POWER) PCB-MAIN ························ C-2 (HIFI) PCB-MAIN ······························ C-3 (TIMER/OPEKEY) PCB-MAIN ·········· C-4 PCB-OPE ·········································· C-4 (Y/C/A) PCB-MAIN ···························· C-5 (CONT) PCB-MAIN ··························· C-6 HS-U449...
  • Page 73 S8A4 S8A3 S8A2 S8A1 S8A0 C801 D8A4 D8A5 D8A6 C802 C803 C804 CONTENTS PCB-INTERCONNECT ···················· C-1 (POWER) PCB-MAIN ························ C-2 (HIFI) PCB-MAIN ······························ C-3 (TIMER/OPEKEY) PCB-MAIN ·········· C-4 PCB-OPE ·········································· C-4 (Y/C/A) PCB-MAIN ···························· C-5 (CONT) PCB-MAIN ··························· C-6 HS-U449...
  • Page 74 C2C4 R2B9 1V(p-p)(H) 1.2V(p-p)(H) IC2A0 !8 PLAY IC2A0 !8 REC 0.6V(p-p)(H) 0.6V(p-p)(H) CONTENTS PCB-INTERCONNECT ···················· C-1 (POWER) PCB-MAIN ························ C-2 (HIFI) PCB-MAIN ······························ C-3 (TIMER/OPEKEY) PCB-MAIN ·········· C-4 PCB-OPE ·········································· C-4 (Y/C/A) PCB-MAIN ···························· C-5 (CONT) PCB-MAIN ··························· C-6 HS-U449...
  • Page 75 Vcod 22 CORE (TIMER/OPEKEY) PCB-MAIN ·········· C-4 16 N.C. VLIM 21 MOTOR GND PCB-OPE ·········································· C-4 17 N.C. Vco 20 Vco (12V) (Y/C/A) PCB-MAIN ···························· C-5 1000p 18 RS RSm 19 (CONT) PCB-MAIN ··························· C-6 12k 0.1W 0.47 0.5W HS-U449...
  • Page 76 C3C2 B – 4 C5E2 D – 3 C923 B – 1 B – 6 Q3A0 C – 5 R2B5 B – 4 R3C4 C – 5 R5M5 A – 2 R915 E – 1 TP11 B – 6 HS-U449...

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