TopPage LC-42D65U SERVICE MANUAL No. S78N2LC42D65U LCD COLOR TELEVISION LC-42D65U MODEL In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.
LC-42D65U LC-42D65U SAFETY PRECAUTION Service Manual IMPORTANT SERVICE SAFETY PRECAUTION Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow: WARNING • Use an AC voltmeter having with 5000 ohm per volt, or higher, sen- sitivity or measure the AC voltage drop across the resistor.
LC-42D65U PRECAUTIONS A PRENDRE LORS DE LA REPARATION Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants. AVERTISSEMENT • A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ...
LC-42D65U PRECAUTIONS FOR USING LEAD-FREE SOLDER Employing lead-free solder • “PWBs” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.
LC-42D65U PRECAUTIONS IN SERVICING THE HDCP-KEY ROM Applied part: HDCP-KEY ROM IC8451 RH-IXC318WJQZY (updated ROM) The HDCP-KEY ROM shall be protected and managed for its information inside. In servicing this ROM, therefore, take the following information pro- tection/management measures. 1) When disposing of the component parts and PWBs, destruct the IC itself in a proper way.
The dimensional drawings are shown on the inside back cover. As part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without prior notice. The performance specification figures indicated are nominal values of production units.
LC-42D65U CHAPTER 2. LC-42D65U OPERATION MANUAL Service Manual  OPERATION MANUAL Part Names TV (Front) Remote control sensor OPC sensor * POWER indicator OPC indicator * OPC: Optical Picture Control TV (Rear/Side) POWER button MENU AC INPUT button terminal INPUT...
LC-42D65U Part Names TV POWER: Switch the TV power on or enters standby. Remote Control Unit DISPLAY: Display the channel information. SOURCE POWER: Turns the power of the external equipment on and off. External equipment operational buttons: Operate the external equipment.
LC-42D65U QUICK REFERENCE Attaching the Stand Before attaching (or detaching) the stand, unplug the AC cord from the AC INPUT terminal. Before performing work spread cushioning over the base area to lay the TV on. This will prevent it from being damaged.
Setting the TV on the Wall CAUTION This TV should be mounted on the wall only with the wall mount bracket AN-52AG4 (SHARP). The use of other wall mount brackets may result in an unstable installation and may cause serious injuries.
LC-42D65U Appendix Troubleshooting Problem Possible Solution No power Check if you pressed TV POWER on the remote control unit. If the indicator on the TV does not light up, press POWER on the TV. Is the AC cord disconnected? Has the power been turned on? Unit cannot be operated.
LC-42D65U On-Screen Display Menu Menu Items For TV/INPUT 1/2/3 Mode For HDMI/PC-IN Mode Picture Menu Picture Menu Backlight Backlight Contrast Contrast Brightness Brightness Color Color Tint Tint Sharpness Sharpness Advanced Advanced C.M.S.-Hue C.M.S.-Hue C.M.S.-Saturation C.M.S.-Saturation Color Temp. Color Temp. Active Contrast...
LC-42D65U CHAPTER 4. LC-42D65U REMOVING OF MAJOR PARTS Service Manual  REMOVING OF MAJOR PARTS 1. Remove the 4 lock screws and detach the Stand. 2. Remove the 4 VESA Hole Covers. 3. Remove the 1 lock screw, 13 lock screws and detach the Rear Cabinet.
LC-42D65U 4. Remove the 1 lock screw and detach the Bottom Cover. 5. Detach the KEY Unit Ass'y. 6. Detach the KEY Unit from the KEY Button Cover, and disconnect KM-Wire. 7. Disconnect SP-Wire. 8. Remove the 2 lock screws and detach the Speaker-LR.
LC-42D65U 9. Remove the 2 lock screws and detach the Side AV Cover. 10.Remove the 12 lock screws, 4 lock Shafts, 4 lock screws, 2 lock screws and detach the Main Shield. 11.Detach the R/C, LED Unit, and disconnect RA-Wire.
LC-42D65U 12.Disconnect all the connectors from all the PWBs. LA (CN1) LC (CN2) LW/PL 4 – 4...
LC-42D65U 13.Remove the 5 lock screws and detach the POWER Unit. 14.Remove the 7 lock screws and detach the MAIN Unit, Heat Sink Ass'y. POWER Unit Heat Sink Ass'y MAIN Unit 4 – 5...
LC-42D65U 15.Remove the 1 lock screw, 2 lock screws and detach the MAIN PWB Angle Ass'y. 16.Remove the 1 lock screw, 2 lock screws and detach the POWER MAIN PWB Angle-R. 17.Remove the 1 lock screw, 2 lock screws and detach the POWER MAIN PWB Angle-L.
LC-42D65U CHAPTER 5. LC-42D65U ADJUSTMENT Service Manual  ADJUSTMENT PROCEDURE The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is required due to part replacement, make an adjustment according to the following procedure.
LC-42D65U 5. Even a single failure in the process will trigger the upgrade failure screen. UPGRADE FAILURE NOTE: In the event of a failure, repeat the upgrade process. If the process repeatedly fails, it is likely that the hardware need fixing.
LC-42D65U 2.3. Monitor microprocessor software version upgrade Create the USB memory for monitor microprocessor software version upgrade in the same manner as explained in the “Main software version upgrade”. Copy the file LAKEVAxx.USB and LAKEMxxx.BIN (named temporarily) for monitor microprocessor software version upgrade to the USB memory.
LC-42D65U 3. Entering and exiting the adjustment process mode 1) Before entering the adjustment process mode, the AV position RESET in the video adjustment menu. 2) While holding down the “VOL (–)” and “INPUT” keys at a time, plug in the AC cord of the main unit to turn on the power.
LC-42D65U 5. List of adjustment process mode menu The character string in brackets [ ] will appear as a page title in the adjustment process menu header. Page Line Item Description Remarks (adjustment detail, etc.) MAIN Version Main software version...
LC-42D65U Page Line Item Description Remarks (adjustment detail, etc.) ANALOG RGB ADJ Analog RGB picture level adjustment R A_GAIN G A_GAIN B A_GAIN R D_GAIN G D_GAIN B D_GAIN R OFFSET G OFFSET B OFFSET VCOM ADJ VCOM adjustment value...
LC-42D65U Page Line Item Description Remarks (adjustment detail, etc.) BE ATT BE G Limit Bass Center ATT Bass Vol0 MIN Bass Vol60 MIN Bass Vol60 Center Bass Vol0 MAX Bass Vol60 MAX Treble Center ATT Treble Vol0 MIN Treble Vol60 MIN...
LC-42D65U Page Line Item Description Remarks (adjustment detail, etc.) LCD TEST PATTERN TV TEST PATTERN 1 TV TEST PATTERN 2 KEY LOCK(1217) KOUTEI AREA ALL CLEAR A MODE AREA CLEAR BACKUP AREA CLEAR B MODE AREA CLEAR EXECUTION EEP SAVE...
LC-42D65U 6. Special features * STANDBY CAUSE (Page 1/38) Display of a cause (code) of the last standby The cause of the last standby is recorded in EEPROM whenever possible. Checking this code will be useful in finding a problem when you repair the troubled set.
LC-42D65U 7.5. Component 33K signal adjustment Adjustment item Adjustment conditions Adjustment procedure Adjustment 1080i signal Feed the 100% color bar signal to INPUT 1 component input. 100% white Auto adjustment Page 6/38 Bring the cursor on [•COMP 33K ADJ (INPUT1)] and press [ENTER].
LC-42D65U 8. Adjustment of white balance 8.1. White balance adjustment Adjustment item Adjustment conditions Adjustment procedure Setting For detailed adjustment procedure, refer to “Kameyama Model Integral Monitor WB Adjustment Specifications V1.6”. 1) Make the following settings for the set. AV MODE: [DYNAMIC]...
LC-42D65U 8.2. Adjusting procedure by use of [RS-232C] 1. Get ready the PC with COM port (RS-232C) running on Windows 95/98/ME/2000/XP operating system, as well as the RS-232C cross cable. 2. Start the unit with the RS-232C cable connected. 3. Start the terminal software. (The freeware readily available on the Internet will do.) 4.
LC-42D65U 10. Model number ID plug Model numbers are identified by inserting the destination ID plug (QCNCMA275WJQZ) in its specified slot of the destination ID connector SC9201/ SC9202 (QCNCWA715WJQZY). Output Optical output S terminal 5 – 15...
LC-42D65U  PUBLIC MODE SETTING PROCEDURE 1. How to start Public Mode • There are the following two ways to get the public mode setup screen displayed. In the adjustment process mode, turn on “PUBLIC MODE”. Also press the “CH ( )”...
LC-42D65U 4. Public Mode Menu The guidance is not displayed onscreen. Setup procedure • To move the cursor up and down, use the “cursor UP/DOWN” key (remote controller) and “CH ( )” key (remote controller and set). • To change the settings, use the “cursor RIGHT/LEFT” key (remote controller) and “VOL (+)/(–)” key (remote controller and set).
LC-42D65U 5. On Setting Items * “EZ-SETUP” discussed below indicates “EZ-SETUP after the first power-on”. 1) POWER ON FIXED Selection Selection between “Variable” and “Fixed” (loop provided) Default – (Variable) Explanation In “Fixed” setting, the power-off by the power key of the unit is invalidated and the image is kept being received. The power can be turned off by stopping the power supply from AC.
LC-42D65U 6) PANEL BUTTON Selection Selection between “Respond” and “No respond” (loop provided) Default Respond Explanation All the operations by keys (except the power key) of the unit can be invalidated. Limit in Setting • Adjustment process, inspection mode and hotel menu mode can be started irrespective of setting.
LC-42D65U 10)INPUT MODE FIXED Selection Selection between “Variable”, “Fixed”, “ACON (AC CTRL)” and “AC/RCON (AC/RC CTRL)” (loop provided) Default – (Variable) • At the “Fixed” setting, the TV set gets started with the settings of “Input mode start”, and then any other channels and inputs Explanation are not accepted.
LC-42D65U 15)PUBLIC MODE (ON/OFF) Selection Selection between “ON” and “OFF” (loop provided) Default Explanation In case of “ON”, public mode settings are effected. Limit in Setting None Exception None Remarks The public-mode settings are operable only when this item is set at ON.
LC-42D65U CHAPTER 6. LC-42D65U TROUBLE SHOOTING TABLE Service Manual  TROUBLE SHOOTING TABLE No video (1) COMPOSITE: No external input video COMPOSITE: No external input video [INPUT-1] [INPUT-3] Is INPUT-1 selected on the input select menu screen? Is INPUT-3 selected on the input select menu screen?
LC-42D65U No video (2) COMPONENT: No external input video [INPUT-1] COMPONENT: No external input video [INPUT-2] Is INPUT-1 selected on the input select menu screen? Is INPUT-2 selected on the input select menu screen? Is the INPUT-SELECT for the input signal?
LC-42D65U No video (3) S-VIDEO: No external input video [INPUT-2] Is INPUT-2 selected on the input select menu screen? Does the INPUT-2 S1_PLUG detection function? Check the line between pin(6) of input terminal(J504) and pin(AN9) of IC8001(CPU). Are there the S-VIDEO signal inputs at pins(AN17)(Y) and...
LC-42D65U No video (4) No video at UHF/VHF broadcast signal reception No video at digital broadcast signal reception Is the specified TV signal selected on the input select menu screen? Is there the analog video signal output (VIDEO) at pin(13) of...
LC-42D65U No video (5) PC: No external input video [INPUT-4] Is INPUT-4 selected on the input select menu screen? Select INPUT-4 on the input select menu screen for the right input signal. Is IC1803(EEPROM) accessed by I2C, with PC connected, to read the DDC_I2C SCL/SDA data? Check the DDC line and its peripheral circuits.
LC-42D65U [HDMI input] No video (6) HDMI: No external input video [INPUT-5] HDMI: No external input video [INPUT-6] Is INPUT-5 selected on the input select menu screen? Is INPUT-6 selected on the input select menu screen? Select INPUT-5 on the input select menu screen for Select INPUT-6 on the input select menu screen for the right input signal.
LC-42D65U [HDMI input] No video (6) HDMI: No external input video [INPUT-7] HDMI: No external input video [INPUT-8] Is INPUT-7 selected on the input select menu screen? Is INPUT-8 selected on the input select menu screen? Select INPUT-7 on the input select menu screen Select INPUT-8 on the input select menu screen for the right input signal.
LC-42D65U [HDMI input] No video (6) HDMI: No external input video [INPUT-9] Is INPUT-9 selected on the input select menu screen? Select INPUT-9 on the input select menu screen for the right input signal. Does the HOT PLUG detection function?
LC-42D65U No audio (1) INPUT-1 No audio. INPUT-2 No audio. Is INPUT-1 selected on the input select menu screen? Is INPUT-2 selected on the input select menu screen? Is the audio output selected for “VARIABLE” on the menu Is the audio output selected for “VARIABLE” on the...
LC-42D65U No audio (1) INPUT-3 No audio. Is INPUT-3 selected on the input select menu screen? Is the audio output selected for “VARIABLE” on the menu screen? Set the audio output to “FIXED”. Does the audio signal come from pins(5)(L) and (4)(R) of input ter- minal(J501) to pins(40)(L) and (41)(R) of IC1403(CODEC)? Check the line between J501 and IC1403.
LC-42D65U No audio (2) [PC analog audio input] INPUT-4 No audio. [HDMI analog audio input] INPUT-6 No audio. Is INPUT-4 selected on the input select menu screen? Is INPUT-6 selected on the input select menu screen? Is the audio output selected for “VARIABLE” on the Is the audio output selected for “VARIABLE”...
LC-42D65U No audio (3) No audio at UHF/VHF broadcast signal reception. No audio at digital broadcast signal reception. Is TV selected on the input select menu screen? Is TV selected on the input select menu screen? Is the audio output selected for “VARIABLE” on the menu Is the audio output selected for “VARIABLE”...
LC-42D65U No audio (4) INPUT-5 No audio (HDMI connected) INPUT-6 No audio (HDMI connected) INPUT-7 No audio (HDMI connected) INPUT-8 No audio (HDMI connected) INPUT-9 No audio (HDMI connected) [INPUT-5 input] Is the audio output selected for “VARIABLE” on the...
LC-42D65U No audio signal at Digital Audio Output terminal (Analog sound heard) No INPUT-5/6/7/8(HDMI) audio. No audio at digital broadcast signal reception. If no video appears, refer to “No external input video (HDMI) [INPUT-5/6/ Are there the video signal outputs (IF_P/N) at the pins(19) and (20) 7/8]”.
LC-42D65U No monitor audio output Is the audio output from the monitor set at “VARIABLE” or “FIXED” on the Check the I2C line(SCL0/SDA0) and IC1403. menu screen? Are there the audio signal outputs at pins(24)(LINE_L) and (25)(LINE_R) of Check IC1403 and its peripheral circuits.
LC-42D65U LED flashing timing chart for error notification. 250ms 1sec 1) Power LED (The power LED (Blue) which lights during TV reception flashes.) Error type Power red LED operation (1 cycle) Pins are microprocessor pins. Lamp failure ERR_PNL (pin 40): L failure. Confirmed after 10 consecutive...
LC-42D65U 2) Power failure details (Power LED flashes twice and OPC LED flashes) Error type Notification LED operation (1 cycle) Pins are microprocessor pins unless otherwise specified. PS_ON DET_15V (pin 34). UR15V or A9V is not applied. DET_15V failure H: On...
LC-42D65U CHAPTER 7. LC-42D65U MAJOR IC INFORMATIONS Service Manual  MAJOR IC INFORMATIONS 1. MAJOR IC INFORMATIONS 1.1. IC1403 (VHiAK4682AE-1Y) This IC provides for 2-channel A/D and 4-channel D/A (192-kHz sampling). The analog audio signal from INPUT-1/2/3 or INPUT-4 (PC-IN audio) or INPUT-6 (HDMI-analog audio) input terminal is fed into this IC for selection.
LC-42D65U 1.6. IC8151/IC8152/IC8153/IC8154 (RH-iXC317WJQZQ) These are 256-Mbit (16M x 16bit) DDR synchronous DRAM. 1.7. IC8451 (RH-iXC318WJQZY) This is 8k-bit EEPROM device including the HDCP key data. 1.8. IC8452 (VHiS29GL1282EQ) The 256M-bit page mode flash memory device stores the main CPU program.
LC-42D65U LC-42D65U CHAPTER 10. SCHEMATIC DIAGRAM Service Manual  DESCRIPTION OF SCHEMATIC DIAGRAM 1. VOLTAGE MEASUREMENT CONDITION: 1) The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 120V. Signals are fed by a color bar signal gener- ator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.
LC-42D65U PartsGuide PARTS GUIDE No. S78N2LC42D65U Note: The reference numbers on the PWB LC-42D65U are arranged in alphabetical order. MODEL CONTENTS CABINET AND MECHANICAL PARTS PRINTED WIRING BOARD ASSEMBLIES SUPPLIED ACCESSORIES LCD PANEL (NOTE: THE PARTS HERE SHOWN ARE SUPPLIED AS AN ASSEMBLY PACKING PARTS (NOT REPLACEMENT ITEM) BUT NOT INDEPENDENTLY.)
LC-42D65U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY  PRINTED WIRING BOARD ASSEMBLIES KEY Unit DUNTKE266FM02 MAIN Unit DUNTKE716FM02 R/C, LED Unit DUNTKE868FM01 POWER Unit RDENCA298WJQZ  LCD PANEL (NOTE: THE PARTS HERE SHOWN ARE SUPPLIED AS AN ASSEMBLY BUT NOT INDEPEN- DENTLY.)
LC-42D65U  CABINET AND MECHANICAL PARTS R/C, LED Unit KEY Unit POWER Unit 5-1 5-2 MAIN Unit...
LC-42D65U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY  CABINET AND MECHANICAL PARTS Front Cabinet Ass'y CCABAC126WJ01 Front Cabinet Not Available Badge, SHARP Not Available LED Decoration HDECQA992WJ3A Shine Trim HDECSA044WJ3A SP Sheet HPNLSA207WJKA Rear Cabinet Ass'y CCABBB355WJ01 Rear Cabinet...
LC-42D65U  SUPPLIED ACCESSORIES Cable Band Cable Clamp AC Cord Remote Control Unit Operation Manual "AAA" Size Battery Stand Unit X10-1 PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY  SUPPLIED ACCESSORIES Cable Band LHLDWA083WJ00 Cable Clamp LHLDWA173WJKZ AC Cord...
LC-42D65U  PACKING PARTS (NOT REPLACEMENT ITEM)
LC-42D65U PRICE PARTS CODE PART DESCRIPTION RANK MARK DELIVERY  PACKING PARTS (NOT REPLACEMENT ITEM) Packing Case SPAKCE360WJZZ Stand Case SPAKFB577WJZZ Mirror Mat Base SPAKPA780WJZZ Mirror Mat Sup SPAKPA904WJZZ Wrapping Paper SPAKPB219WJZZ Packing Add. SPAKXC103WJZZ Polyethylene Bag SSAKA0101GJZZ Polyethylene Bag...
LC-42D65U COPYRIGHT 2008 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.