Hitachi CML174SXW2 Service Manual
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Hitachi CML174SXW2 Service Manual

Hitachi CML174SXW2 Service Manual

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CAUTION:
Before servicing this chassis, it is important that the service technician read the "Safety
Precautions" and "Product Safety Notices" in this service manual.
ATTENTION:
Avant d'effectuer l'entretien du châassis, le technicien doit lire les «Précautions de sécurité»
et les «Notices de sécurité du produit» présentés dans le présent manuel.
VORSICHT:
Vor Öffnen des Gehäuses hat der Service-Ingenieur die „Sicherheitshinweise" und „Hinweise
zur Produktsicherheit" in diesem Wartungshandbuch zu lesen.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH
LCD Colour Monitor
November 2003
No. 0422
CML174SXW2
«MODEL NAMES»
CML175SXW2
Data
contained
within
this
manual is subject to alteration for
improvement.
Les données fournies dans le présent
manuel d'entretien peuvent faire l'objet
de modifications en vue de perfectionner
le produit.
Die
in
diesem
Wartungshandbuch
enthaltenen Spezifikationen können sich
zwecks Verbesserungen ändern.
Service
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  • Page 1 No. 0422 CML174SXW2 «MODEL NAMES» CML175SXW2 SERVICE MANUAL MANUEL D'ENTRETIEN WARTUNGSHANDBUCH CAUTION: Before servicing this chassis, it is important that the service technician read the “Safety Precautions” and “Product Safety Notices” in this service manual. Data contained within this Service manual is subject to alteration for improvement.
  • Page 2 ALL PRODUCTS CE MARK Before any service is performed on the chassis an 1. HITACHI products may contain the CE mark on isolation transformer should be inserted between the the rating plate indicating that the product power line and the product.

  • Page 3: Table Of Contents

    CONTENTS 1. INTRODUCTION ............................3 Scope..................................3 Description................................3 2. ELECTRICAL REQUIREMENTS ......................... 4 Standard Test Conditions............................4 All tests shall be performed under the following conditions, unless otherwise specified..........4 LCD monitor General specification........................5 LCD Panel Specification............................6 Input Signals .................................8 CONTROLS.................................12 White Color Temperature ...........................14 POWER SUPPLY..............................15 Plug &...
  • Page 4 8. Power Line Transient Test (IEC 61000-4-4 Fast Transients/Burst) ............35 Peak Voltage:..............................35 Polarity : + / - ..............................35 Repetition Frequency of the impulse : 5 KHz.....................35 ± Rise-Time : 5ns 30% ............................35 ± Impulse Duration: 50 nS 30% .........................35 Relation to Power Supply: Asynchronous......................35 ±...

  • Page 5: Introduction

    CRT monitor, consumes less power and gets less weight in addition MTBF target is 20k hours or more. Comparison Chart of CM174SXW2/2B and CML175SXW2/2B CML174SXW2/2B CML175SXW2/2B Panel Normal 17” panel Normal 17”...

  • Page 6: Electrical Requirements

    2. ELECTRICAL REQUIREMENTS 2.1 Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light: 225 lux Viewing distance : 50 cm in front of LCD panel Warrn up time All specifications: 30 minutes Fully functional: 5 seconds Measuring Equipment:...

  • Page 7: Lcd Monitor General Specification

    2.2 LCD Monitor General Specification 17 '' Active matrix colour TFT LCD Panel Type : Hydis HT17E12-200 Display size : 337.92mm (H) x 270.34mm (V) Display mode : 720 X 400 (70 Hz) 640 X 480 (60/66/70/72/75 Hz) SVGA 800 X 600 (60/70/72/75 Hz) XGA 1024 X 768 (60/70/75 Hz) SXGA 1280 X 1024 (60/70/75 Hz) standard resolution Pixel pitch :...

  • Page 8: Lcd Panel Specification

    2.3 LCD Panel Specification 2.3.1 LCD Panel Model (Hydis HT17E12-200) • Display Type Active matrix colour TFT LCD • Resolution 1280 x 1024 pixels • Display Dot 1280 x (RGB) x 1024 • Display Area 337.92mm(H) x 270.34mm(V) • Pixel Pitch 0.264mm(H) x 0.264mm(V) •...
  • Page 9 Note 1) Viewing Angle is the angle at which the contrast ratio is greater than 10. Viewing is determined for the horizontal or 3 & 9 o’clock direction and the vertical or 6 & 12 o’clock direction with respect to the optical axis which is normal to the LCD surface. Note 2) Contrast measurements shall be made at viewing angle of θ...

  • Page 10: Input Signals

    2.4 Input Signals 2.4.1 Video Input • Type Analog RGB Digital TMDS • Input Impedance 75 ohm +/- 2% • Polarity Positive • Amplitude 0 - 0.7 +/- 0.05 Vp-p • Display Colour same as LCD panel 2.4.2 Sync Input •...
  • Page 11 Supported Timing FH (KHZ) SYNC TOTAL ACTIVE SYNC FRONT BACK PIXEL TIMING FV (HZ) POLARITY (DOT/LINE) (DOT/LINE) WIDTH PORCH PORCH FREQ.(MHZ) (DOT/LINE) (DOT/LINE) (DOT/LINE) 640x350 31.469 25.175 VGA-350 70.087 – 640x400 24.83 – 21.05 NEC PC9801 56.42 – 640x400 31.469 –...
  • Page 12 2.4.4 85Hz Refresh Rate Support Monitor should display 85Hz refresh rate mode as emergency mode. Monitor should display “Out of Range” warning menu at this mode. 2.4.5 Video Input Connector Analog Video Input Connector: 15pins mini D-Sub Table 2.4.5. Pin Assignment for D-sub Connector Separate Sync RED VIDEO GREEN VIDEO...
  • Page 13 Digital Video Input Connector: DVI-D (T.B.D) Table 4-3-3. Pin Assignment for DVI-D (24pin) Connector Pin – Assignment of DVI –D Connector : TX2- TX1- 17 TX0- TX2+ TX1+ 18 TX0+ Shield (TX2 / TX4) Shield (TX1 / TX3) 19 Shield (TX0 / TX5) 20 NC 21 NC DDC-Serial Clock...

  • Page 14: Controls

    2.5 CONTROLS 2.5.1 Control Panel (Monitor Front Panel) 1. Power LED, will be green when monitor is on; be amber when in power saving mode. 2. Adjust decrease. 3. Adjust increase. 4. Function select anti-clockwise. 5. Function select clockwise. 6. Power ON/OFF switch, push to ON and push to OFF. (toggle switch) 7.
  • Page 15 Description: • Brightness: Brightness adjustment, the range from 0 to 100. Default = 100 • Contrast: Contrast adjustment, the range from 0 to 100. Default = 50 • H. Position: Horizontal position adjustment. • V. Position: Vertical position adjustment. • Phase: Focus adjustment, the range from 0 to 255 steps.

  • Page 16: White Color Temperature

    Other Features: Intellectual-Auto unit can start the Auto-Adjustment automatically when input a new display mode at first time. After the adjustment, the unit will remember this mode and switch to optimised condition automatically for this mode whenever encounter this mode again.

  • Page 17: Power Supply

    2.7 POWER SUPPLY 2.7.1 Input Voltage Range The monitor shall operate within specification over the range of 90 to 265VAC power supply. 2.7.2 Input Frequency Range Input power frequency range shall be from 47.5 to 63Hz over the specified input voltage range.

  • Page 18: Plug & Play(Edid)

    Power saving states are measured with speakers attached but not worked. The recovery time from stand by /suspend/off mode to on mode is 3 seconds maximun. 2.7.6 Power Connector All units shall have an IEC/CEE-22 type male power receptacle. 2.8 Plug & Play (EDID) The monitor will be capable of sending a VESA standardised EDID file through the DDC (pins 12, 15 of the VGA connector).

  • Page 19: Vl-713 Display Control Board

    3. VL-713 DISPLAY CONTROL BOARD Description The VL-713 display control board is designed to directly receive RGB Analog and TMDS DVI signal to optimum LCD timing signals so as to construct a high display quality LCD monitor. 3.2 Features • Support for image expansion and reduction.

  • Page 20: Block Diagram

    3.3 BLOCK DIAGRAM System Block Diagram 3.4 Connector Locations...

  • Page 21: Connector Type

    3.5 Connector Type Location Type Maker Number of pins DVI-D FEMALE 96113-0803 E&T 4501-10 E&T 98210-4011 E&T CN302 98115-0313 E&T CN301 4300-11P E&T D-SUB E&T 3.6 Connector Pin Assignment 3.6.1 CN1 Pin # Signal Name Description Pin # Signal Name Description TMDS negative RX2-...
  • Page 22 3.6.2 CN5 PIN No. Symbol Function Power Supply : +5V No Connection No Connection No Connection 1,2,3 Power Ground RXE3+ Positive Transmission Data of Pixel 3 (EVEN data) RXE3- Negative Transmission Data of Pixel 3 (EVEN data) RXEC+ Positive Sampling Clock (EVEN data) RXEC- Negative Sampling Clock (EVEN data) RXE2+...
  • Page 23 3.6.4 CN301 Pin No. Signal Comment +5 VDD Audio +5V Audio Volume Control Audio Left+ Output Audio Left- Output AGND Analog GND HP-S HP-Sense HP-L Audio Left Output (Head Phone) HP-R Audio Right Output (Head Phone) Analog GND AGND Audio Right+ Output Audio Right- Output 3.6.5 CN6 Pin NO.

  • Page 24: Vk-713 Control Panel Board

    4. VK-713 Control Panel Board 4.1 Description The VK-713 is designed to offer a user interfaced control panel which passes and receives signals to and from VK-713 display control board. 4.2 Connector and Switch Locations 4.3 Connector Type Number of Pins Location Type Maker...

  • Page 25: Switch Definition

    4.4.3 J3 Pin NO. Signal Comment L+ OUT Audio Output L+ L- OUT Audio Output L- 4.4.4 J1 Pin NO. Signal Comment R+ OUT Audio Output R+ R-OUT Audio Output R- 4.5 Switch Definition Location Definition Power ON/OFF Function select in clockwise direction Function select in anti-clockwise direction Adjust up Adjust down...

  • Page 26: Power Supply & Inverter Board

    5. POWER SUPPLY & INVERTER BOARD 5.1 Description The Power supply and Inverter board is designed for the display control board and the lighting up of the back-lights of LCD module. 5.2 Power Supply ( AC to DC section) 5.2.1 Input Voltage Range The monitor shall operate within specification over the range of 90 to 265VAC power supply.

  • Page 27: Inverter (Dc To Ac Section)

    5.3 Inverter (DC to AC Section) 5.4 Electrical Characteristics 5.4.1 For Hydis PANEL (HT17E12-200) MIN. TYP. MAX. COMMENT INPUT VOLTAGE 11.4V 12.0V 12V+25%/-5% Vin=12V, INPUT CURRENT -------- -------- Vbrite=3.3V Normal BACKLIGHT -------- 705V rms. -------- VOLTAGE LAMP CURRENT 3mA rms. 6.5mA rms 7 mA rms DRIVING...

  • Page 28: Connector Locations

    5.5 Connector Locations 5.5.1 Connector Type JM778- Number of Pins Location Type Maker J940, J980, SM02 (2.0) B-BHS-1-TB J941, J981 P803 96113-1203 E&T P801 SA-4S-066 Huajie SCJ03451X9 98115-0313 E&T 5.5.2 Connector Pin Assignment 5.5.2.1 J940, J980, J941, J981 Pin NO. Signal Comment High voltage for lamp...
  • Page 29 5.5.2.2 P803 For Display Control Board (Interface) Pin NO. Signal Comment +5Vaudio +5Vdc for Audio Circuit GND/Audio Ground for Audio Circuit Common Ground BRITE Brightness adjustable range: 0.4V~3.3V Enable Backlight ON/OFF control (Active High) ON:1.5~5.5V OFF:-0.3~1.0V. 8,9,10 +5Vdc supply to Interface BD, always on.

  • Page 30: Troubleshooting

    6. TROUBLESHOOTING 6.1 Main Procedure...
  • Page 31 6.1.1 Power Circuit and Backlights Troubleshooting...
  • Page 32 6.1.2 Performance Troubleshooting...
  • Page 33 6.1.3 Function Troubleshooting...

  • Page 34: Mechanical Requirements

    7. MECHANICAL REQUIREMENTS 7.1 Vibration and Shock All testing shall be done in each of three mutually perpendicular axes referenced to the position of the system as it is in front of the user (i.e. front-to back, side-to-side and top-to- bottom).

  • Page 35: Dimension Size And Weight

    7.3 Dimension Size and Weight Dimension size 374 (W) x 394.5 (H) x 204 (D) Net Weight Gross Weight 7.4 Gap Spec. 7.4.1 The step between front bezel and back cover shall be within specification. Left and Right Back cover concavity Back cover concavity 0 mm ≤...

  • Page 36: Tilt Base Rotation

    The angle between from bezel and LCD unit in bottom side should not large than 4.0mm JM777 JM778 7.5 Tilt Base Rotation Tilt up 30 ± 1°/ down 5 ±1° 7.6 Swivel Base Rotation Swivel Right 45 ±1° / Left 45 ±1° 7.7 Plastic Material Front Bezel ABS 94V-0 Back Cover ABS 94V-0...

  • Page 37: Power Line Transient Test (Iec 61000-4-4 Fast Transients/Burst)

    8. Power Line Transient Test (IEC 61000-4-4 Fast Transients/Burst) TEST CONDITIONS & PROCEDURE: (Follow IEC 61000-4-4) Test Condition : The condition is base on operating with 50Ω load. 8.1 Peak Voltage: 2 KV (applies the Level 3 typical Industrial Environment” of IEC 61000-4-4) 8.2 Polarity : + / - 8.3 Repetition Frequency of the impulse: 5 KHz.
  • Page 38 WAVESHAPE...

  • Page 39: Power Line Surge Test (Iec 61000-4-5 Surge)

    9. Power Line Surge Test (IEC 61000-4-5 Surge) 9.1 Climatic Condition The climatic conditions shall be within the following ranges: ° ° ° ° ° ° ° ° 9.1.1 Ambient Temperature: 15 C to 35 9.1.2 Relative Humidity: 10% to 75% 9.1.3 Atmospheric Pressure 86kPa (860 mbar) to 106kPa (1060mbar) Note: The temperature and relative humidity should be recorded in the test report.

  • Page 40: Enviroment Requirement

    10. ENVIROMENT REQUIREMENT 10.1 Operating Temperature 5°C ~ 40°C Relative Humidity 20% to 80% Altitude Sea level to 8000ft 10.2 Storage or Shipment Temperature -20°C ~ +60°C Relative Humidity 5% to 85% Altitude Sea level to 40,000ft 10.2.1 TEST PROCEDURE: •...

  • Page 41: Regulation Compliance

    11. REGULATION COMPLIANCE 11.1 This product complies with the most current revisions of following regulations: UL/CUL Standard for Safety of Information Technology Equipment including Electrical Business Equipment {UL 1950/ CSA C22.2 NO950} EN 60950/CB Scheme Safety of Information Technology Equipment including Electrical Business Equipment MPR 1990:8 Test methods for visual display units.

  • Page 42: Electrostatics Discharge (Esd)

    11.2 Electrostatics Discharge (ESD) E.S.D Test This test follows IEC 61000-4-2 Discharge Voltage Level : Criteria Contact Discharge (KV) Air Discharge (KV) Class C ±4 ±4 Class B ±6 ±8 Class A ±8 ±15 Class A : Temporary degradation or loss of function or performance which requires operator Intervention or system reset.

  • Page 43: Quality And Reliability

    Ambient temperature : 15 to 35°C Relative humidity : 30 to 60% 12. QUALITY AND RELIABILITY 12.1 Quality Assurance Unless otherwise specified in this specification or the applicable purchase order, the supplier shall be responsible for maintaining a statistical process program or performing inspections that are sufficient to assure that the parts supplied meet the requirements specified herein.

  • Page 44: Appendix A - Power Supply And Inverter Board Diagrams

    APPENDIX A POWER SUPPLY AND INVERTER BOARD DIAGRAMS CML174SXW2 CML175SXW2...
  • Page 45 MAIN POWER P803 J801 HEADER 10 100 1/2W FUSE C841 C844 C846A HU AJIE R841 102/1KV 470uf/25V 470uf/25V SA- 4S-066 C801 P802 R800 L841 F801 C802 0.2/ 1W FUSE T801 D841 C846 CHOKE F901 P801 T3.15A/250V L801 0.33uf X2 L802 0.33uf X2 EE-30 ER1002F...
  • Page 46 COMPONENT (TOP) SIDE SOLDER (BOTTOM) SIDE No. 0422 POWER+INVERTER BOARD...

  • Page 47: Appendix B - Main / Display Control Board Diagrams

    APPENDIX B MAIN / DISPLAY CONTROL BOARD DIAGRAMS CML174SXW2 CML175SXW2...
  • Page 48 DDCA-5V 0.1u 0.01u/NC GREEN BLUE 0.01u BLUE BLUE+ RE D PC-DETECT 75 1% 12 MILS 75 1%# DALC208SC6 0.01u BLU- CHECK 1117 3904 & RESET IC BLUE- 0.01u GREEN GREEN+ 75 1% PC-DETECT 4 75 1%# 0.01u GRN- GRE EN- 0.01u RED+ GREEN...
  • Page 49 VCC-DDC VCC 1,4,7 EC10QS04 EC10QS04 BAV 99 0.1u 4.7K 4.7K 4.7K BAV 99 VCLK SCL-DDDC SDA-DDDC VSS SDA 4.7K 24LC21 BAV99 DVI -CON 1,3,7 BAV 99 TX2- TX2- TX2- TX2+ 0.1u# TX2+ 3 SHIELD TX2+ SHIELD1 TX4- BAV 99 TX4+ SCL-DDDC DDC CLK SDA-DDDC...
  • Page 50 CONFIG0 PWM0 CONFIG1 CFG [1:0] CFG [3:2] 0 0 - > I 2 C VDDCT RL 5 0 1 - > S P I VBLC RL 1 0 - > 6-WIRE R3 2 YCLK R3 3 YDI O R3 4 YO E BB0N CO NFI G 2...
  • Page 51 1,2,7 100# 0.1u R126 LED_GREEN EA/VP AD0 / P0.0 LE D_ RED AD1 / P0.1 MUT E AD2 / P0.2 AD3 / P0.3 ISP -EN TM DS-SEL 12MH Z AD4 / P0.4 AD5 / P0.5 AD6 / P0.6 AD7 / P0.7 RES ET RESET A8 / P2.0...
  • Page 52 CN5A CN4A FB0N FB0P BB0N FB1N BB0 P FB1P BB1N Tx CLKB- BB1 P TxC LKB+ BB2N FB3N FG0N BB2 P FB3P FG0P BG0N FB0N FG1N BG0 P FB0P FG1P BG1N FB1N TxOUT2A- BG1 P FB1P TxOUT2A+ BG2N Tx CLKB- FCLKN TxC LKB+ BG2 P...
  • Page 53 V-AUDI V-AUDIO V-AUDI V-AUDI V-AUDI V-AUDI V-AUDI 0. 1u 0. 1u 470 u F / 6 .3 V 100K AUDIO I N C 9 2 Mode CN302 0. 33 u F 220uF/10V -OUT A Vin A R101 20K R100 13K CN301 Vo A R102...
  • Page 54 PAN5V VAA3RGB 1,2,3 APL1085-3.3CE PAN5V 5 BLM21P300S VAA3 RGB BLM21P300S C100 0.01u 220uF/10V TO252- 3 C103 C104 C102 C105 C106 220uF/10V 220uF/10V 0.1u 0.1u 0.1u 100uF/ 16V 3.3DIG-ANA 3 1,2,4 BLM21P300S 3.3DIG-AN A + C107 BLM21P300S C109 C108 C117 0.01u + C118 220uF/10V 0.01u...
  • Page 55 THE UPDATED PARTS LIST FOR THIS MODEL IS AVAILABLE ON ESTA...
  • Page 56 Fax: 93 491 3513 Fax: +49- 89-991 80-224 Email: [email protected] Hotline: +49-180-551 25 51 (12ct/min) Email: HSE- [email protected] HITACHI EUROPE srl HITACHI HOME ELECTRONICS (NORDIC) AB Via Tommaso Gulli N.39, 20147 Box 77 S-164 94 Kista Milano, Italia SWEDEN ITALY...

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