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Hitachi CML153 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

TFT MONITOR
DECEMBER 2001
No . . 0412
CML153XW
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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  Summary of Contents for Hitachi CML153

  • Page 1: Service Manual

    No . . 0412 CML153XW SERVICE MANUAL Data contained within this Service manual is subject to alteration for improvement. Les données fournies dans le présent manuel d’entretien peuvent faire l’objet CAUTION: de modifications en vue de perfectionner le produit. Before servicing this chassis, it is important that the service technician read the “Safety Precautions”...
  • Page 2: Table Of Contents

    1. ELECTRICAL REQUIREMENTS ..........1 A. LCD Panel Specification................. 1 B. Controls......................2 C. Power Management ..................2 D. Display Modes for Inspections................ 4 2. ADJUSTMENT CONDITIONS..........5 A. Measuring Apparatuses Used ................ 5 B. Input Signal ....................5 C. Indication......................5 3.
  • Page 3 E. Power Regulator..................... 19 9. INTRODUCTION..............20 A. Front Panel Control and Led ................20 B. Rear Panel connector Input Signals ............... 21 10. TROUBLESHOOTING ............22 A. Main Procedure ....................22 APPENDIX A: DISPLAY UNIT ASSEMBLY .......27 APPENDIX B: PCB ASSEMBLY ..........29...
  • Page 4 Warning ! 1) Critical Components are marked with the symbol of # in the material list. For continued protection against Low Radiation, replace only with same part number. This symbol warns the personnel that un-insulated voltage within the unit may have sufficient magnitude to cause electric shock.
  • Page 5: Electrical Requirements

    1. ELECTRICAL REQUIREMENTS A. LCD Panel Specification Display: 15 inch (15” viewable image size): active matrix: thin film transistor (TFT): liquid crystal display (LCD): 0.297 mm dot pitch: R.G.B. Vertical stripe 200 cd//m white luminance, typical: 300:1 contrast ratio, typical Compatibility: 640 x 350: VGA-350 720 x 400: VGA text...
  • Page 6: Controls

    B. CONTROLS B-1 Control panel (monitor front panel) 1. Power LED, ( Please refer to C-2 LED definition table) 2. Adjust decrease. 3. Adjust increase 4. Function select counter-clockwise. 5. Function select clockwise. 6. Power ON/OFF switch, push to ON and push to OFF. (toggle switch) 7.
  • Page 7 C-2 LED definition Table State On mode Green Stand-by Yellow Suspend Yellow Off mode Yellow DC power off Dark 1. Yellow(stand-by; suspend; off mode) disconnection 2. LED Dark (DC power off) C-3 Power Consumption Meet VESA DPMS Proposal On mode 25 Wmax Stand-by 5 Wmax...
  • Page 8: Display Modes For Inspections

    D. Display Modes FOR Inspections D-1 Supported Timing(for Not supported timing will go to power saving mode)T FH(KHZ) SYNC TOTAL ACTIVE SYNC FRONT BACK PIXEL TIMING FV(HZ) POLARITY (DOT/LINE) (DOT/LINE) WIDTH PORCH PORCH FOREQ. (DOT/LINE) (DOT/LINE) (DOT/LINE) (MHZ) 31.469 25.175 640x350 VGA-350 −...
  • Page 9: Adjustment Conditions

    2. ADJUSTMENT CONDITIONS A. Measuring Apparatuses Used Necessary measuring equipment that for the adjustment of LA-1221JMW’s MAIN PWB are following items. Adjusted Video Generator. Oscilloscope (more than 4 channels required) DC voltmeter Audio analyzer (Panasonic VP-7723A) B. Input Signal Input signal by using video signal generator with VGA Card port for this adjustment. C.
  • Page 10: Adjustment Of Power Supply

    3. ADJUSTMENT of Power Supply A. Adjustment of Switching Regulator (Adapter) A-1 Specifications Input voltage AC 100 ~ 240Vac Rated input voltage AC 90 ~ 264Vac Frequency 50 / 60 Hz Rated frequency 47 ~ 63 Hz DC output Out voltage +12V Maximum output current 3.33A...
  • Page 11: Adjustment Of Boards

    4. ADJUSTMENT OF BOARDS Equipment is connected with boards to be inspected before adjustments. Refer to diagram below. A. Connection Method R.G.B Signal Cable Audio Signal Cable DC Power Cable Inverter Cable Control Cable Audio Cable LCD Lamp Cable EAR phone Cable...
  • Page 12: Vl-531 Display Control Board

    5. VL-531 DISPLAY CONTROL BOARD A. Description The VL-531 display control board is design to directly convert the R.G.B signals from VGA Card D-sub port to optimum LCD timing signals so as to construct a high display quality LCD monitor. B.
  • Page 13: Connector Locations

    D. Connector Locations E. Connector Type Location Type Maker Number of pins DZ11A91-L8 P1.524 FEMALE 96113-1003 E&T 96113-0703 E&T 98210-4011 E&T 98210-4011 E&T F. Connector pin assignment F-1 CN1 Pin NO. Signal Comment R-Video Red Video Input. G-Video Green Video Input. B-Video Blue Video Input.
  • Page 14 Terminal No. Symbol Function VDD1 Digital Power Input (DC+3.3V) VDD1 Digital Power Input (DC+3.3V) Ground Ground Odd-dot Blue Data bit 5 (MSB) Odd-dot Blue Data bit 4 Odd-dot Blue Data bit 3 Odd-dot Blue Data bit 2 Odd-dot Blue Data bit 1 Odd-dot Blue Data bit 0 Ground Odd-dot Green Data bit 5 (MSB)
  • Page 15 F-3 CN2 Terminal No. Symbol Function Terminal No. Symbol Function Source Driver Output VDD2 Analog Power Input (DC+9V) Polarity Control VDD2 Analog Power Input (DC+9V) Data Reverse Control Signal Ground Ground Ground Ground Even-dot Blue Data bit 5(MSB) STV1 Vertical start Pulse1 Even-dot Blue Data bit 4 STV2 Vertical start Pulse2...
  • Page 16 F-4 J2 Pin NO. Signal Comment NONE LED-Y Power saving mode LED-G Monitor is ON KEY-UP Function select counter-clockwise key KEY-Down Function select counter-clockwise key KEY-R Adjust up key KEY-L Adjust down key KEY-POWER Power ON/OFF key F-5 J3 Pin NO. Signal Comment VL531 power input...
  • Page 17: Vk-526 Control Panel And Audio Board

    6. VK-526 Control Panel and Audio Board A. Description The VK-526 is designed to offer an user interfaced control panel which passes and receives signals to and from VP-531 power board .Also there is a stereo audio amplifier to drive a pair of speakers .When in power saving mode the audio circuit can be turned off by the control signal from VP-531 board.
  • Page 18: Connector Pin Assignment

    E. Connector pin Assignment Pin NO. Signal Comment NONE Ground RIN-1 Audio volume adjust line IN R LIN-1 Audio volume adjust line IN L RIN-2 Audio volume adjust line OUT R LIN-2 Audio volume adjust line OUT L Ground R-EAR EAR Phone out R L-EAR EAR Phone out L...
  • Page 19 E-4 J2 Pin NO. Signal I/O Comment Ground LI 2 Earphone out L RI 2 Earphone out R LI 1 Earphone out L Speaker out L No connector RI 1 Earphone out R Speaker out R E-5 Switch definition Location Definition Power ON/OFF Function select by clockwise direction...
  • Page 20: Vp-531 Power Board

    7. VP-531 POWER BOARD A. Description The VP-531 power board is designed for lighting up the back-lights of LCD module. B. Electrical characteristics B-1 FOR HANNSTAR PANEL MIN. TYP. MAX. COMMENT INPUT VOLTAGE 11.4V 12.6V Vin=12V MAX. INPUT CURRENT -------- 0.85A BRIGHTNESS NO LOAD BACKLIGHT...
  • Page 21: Connector Locations

    C. Connector locations C-1 Connector type VP-531 Location Type Maker Number of pins J920,J960 SM02 (8.0)B-BHS-1 96113-0702 E&T 96113-1103 E&T SCJ-0345-I-X-S J801 SCD-014-I C-2 Connector pin assignment C.2.1 J920 & J960 VP-531 Pin NO. Signal Comment Low voltage (common) High voltage for lamp C.2.2 J3 Pin NO.
  • Page 22 C.2.4 J2 Pin NO. Signal Comment Ground Audio R IN Audio L IN C.2.5 J4 13. Pin No. Signal Comment MUTE-1 Audio mute Ground RIN-1 Audio volume adjust line INR LIN-1 Audio volume adjust line INL RIN-2 Audio volume adjust line OUTR LIN-2 Audio volume adjust line OUTL Ground...
  • Page 23: Circuit Description

    8. CIRCUIT DESCRPTION A. Micro-Controller Circuit The U5 (s9050-100) is a system controller. The Y1 is 14.318MHz XTAL. B. Circuit of Plug and Play Plug and play allows the serial communication of host PC and peripherals offering minimal configurations to end users. This monitor supports DDC2B communication protocal. SDATA and VCLK are input to U4 (24LC21A).
  • Page 24: Introduction

    9. Introduction A. Front Panel Control and Led Front Panel Controls Item Control Function Power Switch Turns rhe monitor on and off. Power LED 1. Green indicates monitor is turns on. 2. Yellow indicates DC power off. 3. Amber indicates stand-by, suspend, off mode. Function Button Launches OSD function menu circully Plus Button...
  • Page 25: Rear Panel Connector Input Signals

    B. Rear Panel connector Input Signals Rear Panel Cable and Connector Item Cable / Connector Function Signal Connector Connectors the video cable Audio Connector Connector the audio cable Power Connector Connectors the adapter cable...
  • Page 26: Troubleshooting

    10. TROUBLESHOOTING A. Main Procedure...
  • Page 27 A-1 Power Circuit Troubleshooting...
  • Page 28 A-2 Backlights Troubleshooting...
  • Page 29 A-3 Performance Troubleshooting...
  • Page 30 A-4 Function Troubleshooting...
  • Page 31: Appendix A: Display Unit Assembly

    APPENDIX A: Display Unit Assembly...
  • Page 33: Appendix B: Pcb Assembly

    APPENDIX B: PCB ASSEMBLY...
  • Page 41: Replacement Parts List

    REPLACEMENT PARTS LIST Replacement Parts – CML153XW DESCRIPTION PART No. ADAPTER AC PK100004910 CHASSIS ECCM5513300 HINGE ECCM5534100 BRACKET NECK ECCM5535100 COVER EMI EECM5523100 BEZEL ASSEMBLY FACM553AK00 BEZEL NECK FACM5531100 COVER NECK FACM5532100 COVER HINGE FACM5533100 COVER BACK ASSEMBLY FACM5537100 STAND ASSEMBLY FACM5539100 LCD MODULE HSD150SX82-C AC600019000...
  • Page 42 Hitachi, Ltd. Tokyo, Japan International Sales Division THE HITACHI ATAG O BUILDING No. 15 –12 Nishi Shinbashi, 2 – Chome, Minalo – Ku, Tokyo 105-8430, Japan. Tel: 03 35022111 HITACHI HOME ELECTRONICS HITACHI HOME ELECTRONICS (EUROPE) LTD. (HELLAS) S. A.

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