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Hitachi CML175SXWB 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
TFT LCD MONITOR
October 2002
No. 0532
CML174SXW
CML174SXWB
CML175SXW
CML175SXWB
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. 0532 CML174SXW CML174SXWB CML175SXW CML175SXWB 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: Table Of Contents

    CML174SXW / CML175SXW TFT LCD MONITOR CONTENTS CONTENTS ..................................1 INTRODUCTION ..............................3 .................................. 3 COPE ............................... 3 ESCRIPTION ELECTRICAL REQUIREMENTS......................... 4 ..........................4 TANDARD ONDITIONS ......4 LL TESTS SHALL BE PERFORMED UNDER THE FOLLOWING CONDITIONS UNLESS OTHERWISE SPECIFIED ......................
  • Page 3 POWER LINE TRANSIENT TEST (IEC 61000-4-4 FAST TRANSIENTS/BURST)..........38 : ..............................38 OLTAGE : + / - ............................38 OLARITY ..................... 38 : 5 KH EPETITION REQUENCY OF THE IMPULSE ± 30% ............................ 38 S ± 30% ........................38 : 50 MPULSE URATION...

  • Page 4: Introduction

    1. INTRODUCTION 1.1 Scope This specification defines the requirements for the 17” MICRO-PROCESSOR based Multi- mode supported high resolution color LCD monitor, This monitor can be directly connected to general 15 pin D-sub VGA connector and DVI-D digital connector, eliminates the requirement of optional special display card.

  • Page 5: 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 6: Lcd Panel Specification

    XGA 1024 X 768 (60/70/75 Hz) SXGA 1280 X 1024 (60/70/75 Hz) standard resolution Pixel pitch : 0.098x3mm(H) x 0.294mm(V) Display Dot : 1280 x (RGB) x 1024 Pixel Clock : 25.2 – 135.0MHz Contrast ratio: 400 : 1 (typical) θ...
  • Page 7 • Display Area 337.92mm(H) x 270.34mm(V) • Pixel Pitch 0.264mm(H) x 0.264mm(V) • Display Color 262K (6 bit color) • Lamp Voltage 700 Vrms typ. • Lamp Current 7mA rms.( typ). 4 Lamp • Weight 2000g . • Optical Specifications The following items are measured under stable conditions.
  • Page 8 Note 1) Definition of Viewing Angle: Viewing angle range (10≤CR) Note 2) Definition of Contrast Ratio (CR): Ratio of gray max(Gmax),gray min(Gmin) at the center point of panel. Luminance with all pixels white (Gmax)  Luminance with all pixels black (Gmin) Note 3) Definition of Response time: Sum of T...
  • Page 9 Note 4) After stabilizing and leaving the panel alone at a given temperature for 30 min, the measurement should be executed .Measurement should be executed n a stable, windless ,and dark room.30 min after lighting the back-light. This should be measured in the center of screen.
  • Page 10 Notes 5) Definition of Luminance of White : measure the luminance of white at center point. Notes 6)Definition of 9 points brightness uniformity (Measuring points: Refer to the Note 5) Bmin =100∗ ∗ ∗ ∗                             Bmax Bmax: Maximum brightness Bmin: Minimum brightness...
  • Page 11 Note 8) Definition of Crosstalk (Refer to the VESA STD) The calculation for shadowing is made from the 2 luminance measurements Gbkg and Lsh, as follows: Lmax -Lmin =                         x100 % Lmin Where Lmax is the larger value of Gbkg or Lsh , and Lmin is the smaller of the two.

  • Page 12: Input Signals

    2.4 Input Signals 2.4.1 Video input • Type Analog R, G, B., Digital TMDS • Input Impedance 75 ohm +/- 2% • Polarity Positive • Amplitude 0 - 0.7 +/- 0.05 Vp • Display Color same as LCD panel 2.4.2 Sync input •...

  • Page 13: Supported Timing

    Supported Timing FH(KHZ) SYNC TOTAL ACTIVE SYNC FRONT BACK PIXEL TIMING FV(HZ) POLARITY (DOT/LINE) (DOT/LINE) WIDTH PORCH PORCH FOREQ.(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 – 25.175 VGA-GRAPH 70.087 640x400...
  • Page 14 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 15 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 16: 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 counter-clockwise. 5. Function select clockwise. 6. Power ON/OFF switch, push to ON and push to OFF. (toggle switch) 7.
  • Page 17 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 18: White Color Temperature

    Other features: Intellectual-Auto CML174SXW/175SXW can start the Auto-Adjustment automatically when input a new display mode at first time. After the adjustment, CML174SXW/175SXW will remember this mode and switch to optimized condition automatically for this mode whenever encounter this mode again. Total 27 recent used modes are recorded into CML174SXW/175SXW VESA DPMS Functionality When signaled by the host CPU, CML174SXW/175SXW...

  • Page 19: Power Supply

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

  • Page 20: Plug & Play(Edid)

    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 standardized EDID file through the DDC (pins 12, 15 of the VGA connector). 2.9 Audio Technical specification (CML175SXW) 2.9.1 General Description: Output power : 1W + 1W maximum...

  • Page 21: Vl-713 Display Control Board

    3. VL-713 DISPLAY CONTROL BOARD Description The VL-713 display control board is design to directly receive R, G, B Analog and TMDS DVI signal to optimum LCD timing signals so as to construct a high display quality LCD monitor. 3.2 Features •...

  • Page 22: Block Diagram

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

  • Page 23: 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 24 DDC GND DDC2B logic GND 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-...
  • Page 25 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) AGND Analog GND Audio Right+ Output Audio Right- Output 3.6.5 CN6 Pin NO.

  • Page 26: 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 Location Type Maker Number of pins 4301-08...

  • Page 27: Switch Definition

    HP-R Audio Earphone Output R AGND Audio GND R OUT- Audio Output R+ R OUT+ Audio Output R- 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...

  • Page 28: Power Supply & Inverter Board

    5. POWER SUPPLY & INVERTER BOARD 5.1 Description The Power supply and Inverter board is designed for Display control board and lighting up 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 265 VAC power supply.

  • Page 29: Inverter (Dc To Ac Section)

    5.3 Inverter (DC to AC Section) 5.4 Electrical characteristics 5.4.1 FOR AU PANEL M170EN05 MIN. TYP. MAX. COMMENT INPUT VOLTAGE 11.4V 12.0V 12.6V 12V±5% Vin=12V, INPUT CURRENT -------- Vbrite=3.3V Normal BACKLIGHT -------- 700V rms. -------- VOLTAGE LAMP CURRENT 3mA rms. 7mA rms 7.5mA rms DRIVING...

  • Page 30: Connector Locations

    5.5 Connector locations 5.5.1 Connector type J971 P803 J970 P801 CML174SXW- Location Type Maker Number of pins J970, J971, SM04(4.0)B-BHS-1-TB P803 96113-1203 E&T P801 HF-301 PCB AC Inlet 5.5.2 Connector pin assignment 5.5.2.1 J970, J971 Pin NO. Signal Comment High voltage for lamp High voltage for lamp Low voltage (common) 5.5.2.2 J803 For Display control board (Interface)
  • Page 31 Common Ground BRITE Brightness adjustable range: 0.4V~3.3V Sleep Power saving control(Active High) Normal:-0.3~1.0V. Sleeping:2.0~5.5V 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 32: Troubleshooting

    6. TROUBLESHOOTING 6.1 Main Procedure...
  • Page 33 6.1.1 Power Circuit and Backlights Troubleshooting...
  • Page 34 6.1.2 Performance Troubleshooting Start Change Is Screen Change VGA Cable Scrolling? Main Board Change Change Change Change Is the screen Inverter Board Main Board Main Board LCD Module flickering? Is LCD line Change defective? LCD Module Change Bad Uniformity? LCD Module Change Check Is the screen...
  • Page 35 6.1.3 Function Troubleshooting Start Change Is Control Menu Keyboard Not Functioning? & Retry Change Keyboard & Retry No Trouble Found...

  • Page 36: 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 37: 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 38: Tilt Base Rotation

    The angle between from bezel and LCD unit in bottom side should not large than 4.0mm CML175SXW CML174SXW 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 39: 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 40 WAVESHAPE...

  • Page 41: 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 ° ° ° ° C 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 42: 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 43: Regulation Compliance

    11. REGULATION COMPLIANCE 11.1 This product comply to 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 44: Electrostatics Discharge (Esd)

    11.2 Electrostatics Discharge (ESD) E.S.D Test This test follow the 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 45: Quality And Reliability

    Ambient temperature : 15°C 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 46: Appendix A: Pcba Assembly

    Appendix A: PCBA Assembly...
  • Page 47 HITACHI N0. 0532 VL713 LJM777 - Top Level...
  • Page 48 HITACHI No. 0532 VL713 LJM777 - Input...
  • Page 49 HITACHI No. 0532 VL713 LJM777 - gm5115...
  • Page 50 HITACHI No. 0532 VL713 LJM778 - Display...
  • Page 51 HITACHI No. 0532 VL713 LJM777 - LVDS_IF...
  • Page 52 HITACHI N0. 0532 VL713 LJM777 - Power Circuit...
  • Page 53 HITACHI No. 0532 VL713 LJM777 - Audio...
  • Page 54 HITACHI No. 0532 Key Circuit...
  • Page 55 THE UPDATED PARTS LIST FOR THIS MODEL IS AVAILABLE ON ESTA...

  • Page 56: Appendix B: Display Unit Assembly

    Appendix B: Display Unit Assembly...
  • Page 61 Fax: +46 (0) 8 562 711 13 Tel: +39 02 38073415 Servizio Clienti Email: [email protected] Fax: +39 02 48786381/2 Email: [email protected] HITACHI EUROPE S.A.S HITACHI EUROPE LTD (Norway) AB Lyon Office STRANDVEIEN 18 B.P. 45, 69671 BRON CEDEX 1366 Lysaker FRANCE...

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