Service manual

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SERVICE MANUAL

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the

safety and performance of the set.

This document has been published to be used for

after sales service only.

The contents are subject to change without notice.

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY PRE-

CAUTION............................................................i

PRECAUTIONS A PRENDRE LORS DE

LA REPARATION...............................................ii

PRECAUTIONS FOR USING LEAD-FREE

SOLDER ...........................................................iii

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS ......................................... 1-1

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL .................................. 2-1

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS ................................................ 3-1

CHAPTER 4. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS (LC-

46E77U)......................................................... 4-1

[2] REMOVING OF MAJOR PARTS (LC-

52E77U)......................................................... 4-7

CHAPTER 5. ADJUSTMENT

[1] ADJUSTMENT PROCEDURE....................... 5-1

[2] PUBLIC MODE SETTING PROCEDURE...... 5-16

CHAPTER 6. TROUBLESHOOTING TABLE

[1] TROUBLESHOOTING TABLE....................... 6-1

CHAPTER 7. OVERALL WIRING/SYSTEM BLOCK

DIAGRAM

[1] OVERALL WIRING DIAGRAM......................7-1

[2] SYSTEM BLOCK DIAGRAM.........................7-2

CHAPTER 8. PRINTED WIRING BOARD ASSEM-

BLIES

[1] KEY Unit........................................................8-1

[2] MAIN Unit ......................................................8-2

[3] LED Unit ........................................................8-6

CHAPTER 9. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC DIA-

GRAM............................................................9-1

[2] SCHEMATIC DIAGRAM................................9-2

Parts Guide

TopPage

CONTENTS

LC-46/52E77U

No. S37X3LC46E77U

MODELS

LC-46E77U

LC-52E77U

LCD COLOR TELEVISION

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.

.%A'7A'A* [QKP F F 

Summary of content (116 pages)

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TopPage LC-46/52E77U SERVICE MANUAL No. S37X3LC46E77U LCD COLOR TELEVISION LC-46E77U MODELS LC-52E77U 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. CONTENTS SAFETY PRECAUTION IMPORTANT SERVICE SAFETY PRECAUTION ............................................................i PRECAUTIONS A PRENDRE LORS DE LA REPARATION ........................................
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LC-46/52E77U Service Manual LC46E77U SAFETY PRECAUTION 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 • 1. For continued safety, no modification of any circuit should be attempted. Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across the resistor.
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LC-46/52E77U 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. • A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ 10 watts en parallèle avec un condensateur de 0.15µF en série avec toutes les pièces métalliques exposées du coffret et une terre connue comme une conduite électrique ou une prise de terre branchée à la terre. AVERTISSEMENT 1.
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LC-46/52E77U Indicates lead-free solder of tin, silver and copper. Indicates lead-free solder of tin, silver and copper. Using lead-free wire solder • When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause damage or accident due to cracks.
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LC-46/52E77U Service Manual LC46E77U CHAPTER 1.
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LC-46/52E77U Service Manual LC46E77U CHAPTER 2.
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LC-46/52E77U Part Names Remote Control Unit 1 2 3 17 18 4 19 1 TV POWER: Switch the TV power on or enter standby. 2 DISPLAY: Display the channel information. 3 SOURCE POWER: Turns the power of the external equipment on and off. 4 External equipment operational buttons: Operate the external equipment. 5 0–9: Set the channel. 6 (DOT): Press a button that corresponds to the channel that you wish to watch. 7 INPUT: Select a TV input source.
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LC-46/52E77U 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. CAUTION • Attach the stand in the correct direction. • Do not remove the stand from the TV unless using an optional wall mount bracket to mount it. • Be sure to follow the instructions.
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LC-46/52E77U Appendix Removing the Stand Before detaching (or attaching) the stand, unplug the AC cord from the AC INPUT terminal. CAUTION Do not remove the stand from the TV unless using an optional wall mount bracket to mount it. Before attaching/detaching the stand Before performing work, make sure to turn off the TV. Before performing work spread cushioning over the base area to lay the TV on. This will prevent it from being damaged.
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LC-46/52E77U 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. External in-fluences such as lightning, static electricity, may cause improper operation.
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LC-46/52E77U On-Screen Display Menu Menu Items For TV/INPUT 1/2/3 Mode For HDMI/PC-IN Mode Picture Menu OPC Backlight Contrast Brightness Color Tint Sharpness Advanced C.M.S.-Hue C.M.S.-Saturation C.M.S.-Value Color Temp Fine Motion Enhanced Active Contrast Gamma Adjustment Film Mode Digital Noise Reduction 3D-Y/C Monochrome Range of OPC Reset Picture Menu OPC Backlight Contrast Brightness Color Tint Sharpness Advanced C.M.S.-Hue C.M.S.-Saturation C.M.S.
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LC-46/52E77U Service Manual LC46E77U CHAPTER 3. DIMENSIONS [1] DIMENSIONS Unit: inch (mm) LC-46E77U 17 21/ 64 (440) 40 19/ 64 (1023.4) 22 43/ 64 (575.6) 28 5/ 32 (715) 2 21/ 64 (59) 30 31/ 64 (774) 43 53/ 64 (1113) 20 3/ 4 3 61/ 64 (100) 4 45/ 64 (119) 15 3/ 4 (400) 6 57/ 64 (175) 15 3/ 4 (400) LC-52E77U 12 13/ 16 (325) 49 3/ 8 (1254) 19 1/ 4 (489) 25 41/ 64 (651.0) 32 9/ 64 (816) 2 1/ 64 (51) 34 9/ 64 (867) 45 9/ 16 (1157.
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LC-46/52E77U Service CHAPTER 4. REMOVING OF MAJOR PARTS LC46E77U Manual [1] REMOVING OF MAJOR PARTS (LC-46E77U) 1. Removing of Stand Unit and Rear Cabinet Ass’y. 1. Remove the 4 lock screws 2. Remove the 1 lock screw and detach the Stand Unit . , 8 lock screws , 4lock screws and detach the Rear Cabinet Ass’y.
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LC-46/52E77U 2. Removing of Bottom Cover, Side AV Civer, Main PWB Shield and Control Shield. 1. Detach the Bottom Cover . 2. Disconnect SP wire. Detacht the Speaker-L/R . 3. Remove the 2 lock screws , 2 lock screws and detach the Side AV Cover Ass’y. 4. Remove the 4 lock screws , 4 lock screws 5. Remove the 4 lock screws , and detach the Control Shield Ass’y. , 3 lock screws and detach the Main PWB Shield.
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LC-46/52E77U 3. Removing of Connectors. 1. Disconnect the following connectors from MAIN Unit. (LB, LP, PD, LW, RA, KM, SP) 2. Disconnect the following connectors from POWER Unit. (LB1, PD, PL, LB2, LA) 3. Disconnect the following connectors from INVERTER-1 Unit. (LB2, LA) 4. Disconnect the following connectors from LCD Control Unit.
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LC-46/52E77U 4. Removing of POWER Unit , MAIN Unit, KEY Unit Ass’y and R/C, LED Unit. 1. Remove the 6 lock screws and detach the POWER Unit. 2. Remove the 9 lock screws are detach the MAIN Unit. 3. Detach the KEY Unit Ass’y . 4. Detach the KEY Unit From Operation Button and disconnect KM wire 5. Detach the R/C LED Unit and disconnect RA wire . .
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LC-46/52E77U 5. Removing of Main PWB Angle, Panel Support Angle, Barrier Sheet and LCD Panel Module Unit. 1. Remove the 1 lock screw and detach the Main PWB Angle. 2. Detach the Barrier Sheet from Panel Support Angle. Remove the 16 lock screws 3. Remove the 8 lock screws and detach the Panel Support Angle. and detach the LCD Panel Module Unit.
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LC-46/52E77U 6. Removing of LCD Panel Module. 1. Remove the 14 lock screws 2. Detach the Lens Sheet , 2 lock screws and Diffusion Plate 3. Detach the 2 pieces Lamp Holder , Socket and detach the Bezel Ass’y . . and detach the following 18 pieces Lamp from BL Chassis Ass'y .
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LC-46/52E77U [2] REMOVING OF MAJOR PARTS (LC-52E77U) 1. Removing of Stand Unit and Rear Cabinet Ass’y. 1. Remove the 4 lock screws 2. Remove the 1 lock screw and detach the Stand Unit . , 12 lock screws , and detach the Rear Cabinet Ass’y.
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LC-46/52E77U 2. Removing of Bottom Cover, Side AV Civer, Main PWB Shield and Control Shield. 1. Detach the Bottom Cover . 2. Disconnect SP wire. Detacht the Speaker-L/R . 3. Remove the 2 lock screws , 2 lock screws and detach the Side AV Cover Ass’y. 4. Remove the 4 lock screws , 4 lock screws 5. Remove the 4 lock screws , and detach the Control Shield Ass’y. , 3 lock screws and detach the Main PWB Shield.
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LC-46/52E77U 3. Removing of Connectors. 1. Disconnect the following connectors from MAIN Unit. (LB, LP, PD, LW, RA, KM, SP) 2. Disconnect the following connectors from POWER Unit. (LB1, PD, PL, LB2, LA) 3. Disconnect the following connectors from INVERTER-1 Unit. (LB2, LA) 4. Disconnect the following connectors from LCD Control Unit.
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LC-46/52E77U 4. Removing of POWER Unit , MAIN Unit, KEY Unit Ass’y and R/C, LED Unit. 1. Remove the 6 lock screws and detach the POWER Unit. 2. Remove the 9 lock screws are detach the MAIN Unit. 3. Detach the KEY Unit Ass’y . 4. Detach the KEY Unit From Operation Button and disconnect KM wire 5. Detach the R/C LED Unit and disconnect RA wire . .
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LC-46/52E77U 5. Removing of Main PWB Angle, Panel Support Angle, Barrier Sheet and LCD Panel Module Unit. 1. Remove the 1 lock screw and detach the Main PWB Angle. 2. Remove the 14 lock screws 3. Remove the 8 lock screws and detach the Panel Support Angle. , 10 lock screws 4. Detach the LCD Panel Module Unit and detach the Corner Lug (UP) , Center Lug and Corner Lug . .
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LC-46/52E77U 6. Removing of LCD Panel Module. 1. Remove the 16 lock screws 2. Detach the Lens Sheet , 2 lock screws and Diffusion Plate 3. Detach the 2 pieces Lamp Holder , Socket and detach the Bezel Ass’y . . and detach the following 18 pieces Lamp from BL Chassis Ass'y 9 8 6 7 Socket Lamp 6 1 5 Diffusion Plate 4 Lens Sheet 2 3 BL Chassis Ass'y Lamp Holder 1 Bezel Ass'y 4 – 12 .
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LC-46/52E77U Service Manual LC46E77U CHAPTER 5. ADJUSTMENT [1] 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. 1. After replacement of any PWB unit and/or IC for repair, please note the following. • When replacing the following units, make sure to prepare the new units loaded with updated software.
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LC-46/52E77U 5. Even a single failure in the process will trigger the upgrade failure screen. E77U NOTE: In the event of a failure, repeat the upgrade process. If the process repeatedly fails, it is likely that the hardware need fixing. 6. Upon completion of the whole process, the upgrade success screen as shown below appears. You can check the new software version on this screen. The version information appears after the upgrade is complete. E77U 7.
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LC-46/52E77U 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 HLNAVAxx.USB and HLNAMxxx.BIN (named temporarily) for monitor microprocessor software version upgrade to the USB memory. 2.3.1 How to upgrade the software 1. Unplug the AC cord. 2.
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LC-46/52E77U 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. The letter “” appears on the screen. 3) Next, hold down the “VOL (–)” and “CH ( (The “VOL (–)” and “CH ( )” keys at a time. )” keys should be pressed and held until the display appears.
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LC-46/52E77U 5. List of adjustment process mode menu The character string in brackets [ ] will appear as a page title in the adjustment process menu header.
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LC-46/52E77U Page 7 8 9 10 11 12 13 14 Line 1 2 3 4 5 6 7 8 9 10 1 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Item ANALOG RGB ADJ 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 FRC ON/OFF LEV1 LEV2 LEV3 LEV4 LEV5 LEV6 MG1R MG1G MG1B MG2R MG2G MG2B MG3R MG3G MG3B MG4R MG4G MG4B MG5R MG5G MG5B MG6R MG6G MG6B MODE SELECT POS SELECT POS MIN POS MID1 POS MID2 POS MID3 POS MID4 POS MID5 POS MID6 POS MAX
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LC-46/52E77U Page 15 16 17 18 19 20 21 Line 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 Item Audio Switch Flat Mode ADC Volume 1 ADC Volume 2 ADC Volume 3 ADC Volume 4 ADC Volume 5 ADC Volume 6 Lip Sync LR Lip Sync Monitor Lip Sync SW LR Func Vol AIN(2ch) LR Func Vol HDMI(2ch) LR Func Vol ATV(2ch) LR Func Vol DTV(2ch) Input Trim(2ch) PEQ1 F0 PEQ1 Q PEQ1 Gain PEQ1 Gain Limit PEQ1 Fade Time PEQ2 F0 PEQ2 Q PEQ2 Ga
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LC-46/52E77U Page 22 23 24 25 26 27 Line 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 Item 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 Treble Vol60 Center Treble Vol0 MAX Treble Vol60 MAX VS Path VS Option VS SP Interval VS Width VS Input Gain(2ch) Bass AGC Bass Harmonics Bass LPF Fc Bass HPF Fc Bas
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LC-46/52E77U Page 28 29 30 31 32 33 34 35 Line 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 1 2 3 Item BRIGHTNESS DA23 BRIGHTNESS DA24 BRIGHTNESS DA25 BRIGHTNESS DA26 BRIGHTNESS DA27 BRIGHTNESS DA28 BRIGHTNESS DA29 BRIGHTNESS DA30 BRIGHTNESS DA31 BRIGHTNESS DA32 OPC33 ADLEVEL 0 OPC33 ADLEVEL 1 OPC33 ADLEVEL 2 OPC33 ADLEVEL 3 OPC33 ADLEVEL 4 OPC33 ADLEVEL 5 OPC33 ADLEVEL 6 OPC33 ADLEVEL 7 OPC33 ADLEVEL 8 OPC33 ADLEVEL 9 O
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LC-46/52E77U Page 36 37 38 39 40 Line 1 2 3 1 2 3 4 5 6 1 2 3 4 5 6 7 8 1 2 3 4 1 Item 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 READ/WRITE SLAVE ADDRESS REGISTER ADDRESS UPPER REGISTER ADDRESS LOWER WRITE DATA UPPER WRITE DATA LOWER READ DATA UPPER READ DATA LOWER EEP SAVE EEP RECOVER STANDBY CAUSE RESET SETTING FOR ADJ BD UNIT FACTORY MENU Description Remarks (adjustment detail, etc.
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LC-46/52E77U 6. Special features * STANDBY CAUSE (Page 1/40) 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. * EEP SAVE (Page 39/40) * EEP RECOVER (Page 39/40) Storage of EEP adjustment value Retrieval of EEP adjustment value from storage area 7. Video signal adjustment procedure *Adjustment process mode menu is listed in section 5. 7.1.
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LC-46/52E77U 7.5. Component 33K signal adjustment 1 Adjustment item Adjustment Adjustment conditions 1080i signal Adjustment procedure Feed the 100% color bar signal to INPUT 1 component input. 100% white 2 Auto adjustment performance Page 6/40 Bring the cursor on [•COMP 33K ADJ (INPUT1)] and press [ENTER]. [•COMP 33K ADJ (INPUT1) OK] appears when finished. 7.6.
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LC-46/52E77U 8. Adjustment of white balance 8.1.
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LC-46/52E77U 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. Make the following settings. Baud rate Data LENGTH Parity bit Stop bit Flow control 9,600 bps 8 bit None 1 bit None 5.
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LC-46/52E77U 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).
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LC-46/52E77U [2] 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 ( power. )” and “VOL (+)” keys on the set at once and turn on the 1) Press the “INPUT” and “VOL (+)” keys on the set at once and turn on the power. 2) Get the password input screen displayed. Procedure ˴The input starts with the leftmost digit.
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LC-46/52E77U 4. Public Mode Menu The guidance is not displayed on screen. 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). • To save new settings, keep the cursor at “EXECUTE” and use “ENTER” key (remote controller and set).
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LC-46/52E77U 5. On Setting Items * “EZ-SETUP” discussed below indicates “EZ-SETUP after the first power-on”. 1) POWER ON FIXED Selection Default Explanation Limit in Setting Exception Remarks Selection between “Variable” and “Fixed” (loop provided) – (Variable) 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. Refer to the “Power-On Fixed” sheet.
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LC-46/52E77U 6) PANEL BUTTON Selection Default Explanation Limit in Setting Exception Selection between “Respond” and “No respond” (loop provided) Respond All the operations by keys (except the power key) of the unit can be invalidated. • Adjustment process, inspection mode and hotel menu mode can be started irrespective of setting. • All the keys can be used in adjustment process, inspection mode and hotel menu irrespective of setting.
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LC-46/52E77U 10)INPUT MODE FIXED Selection Default Explanation Limit in Setting Exception Remarks Selection between “Variable”, “Fixed”, “ACON (AC CTRL)” and “AC/RCON (AC/RC CTRL)” (loop provided) – (Variable) • At the “Fixed” setting, the TV set gets started with the settings of “Input mode start”, and then any other channels and inputs are not accepted. • At the “ACON (AC CTRL)” setting, the TV set gets started with the settings of “Input mode start” under AC control.
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LC-46/52E77U 15)PUBLIC MODE (ON/OFF) Selection Default Explanation Limit in Setting Exception Remarks Selection between “ON” and “OFF” (loop provided) OFF In case of “ON”, public mode settings are effected. None None The public-mode settings are operable only when this item is set at ON.
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LC-46/52E77U Service CHAPTER 6. TROUBLESHOOTING TABLE LC46E77U Manual [1] TROUBLESHOOTING TABLE No video (1) COMPOSITE: No external input video [INPUT-1] Is INPUT-1 selected on the input select menu screen? COMPOSITE: No external input video [INPUT-3] Is INPUT-3 selected on the input select menu screen? NO Select INPUT-1 on the input select menu screen for the right input signal. NO Select INPUT-3 on the input select menu screen for the right input signal.
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LC-46/52E77U No video (2) COMPONENT: No external input video [INPUT-1] Is INPUT-1 selected on the input select menu screen? Is the INPUT-SELECT for the input signal? COMPONENT: No external input video [INPUT-2] Is INPUT-2 selected on the input select menu screen? Is the INPUT-SELECT for the input signal? NO Select INPUT-1 on the input select menu screen for the right input signal. NO Select INPUT-2 on the input select menu screen for the right input signal.
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LC-46/52E77U No video (3) S-VIDEO: No external input video [INPUT-2] Is INPUT-2 selected on the input select menu screen? NO Does the INPUT-2 S1_PLUG detection function? Check the line between pin (6) of input terminal (J504) and pin (AH1) of IC8001 (CPU). YES Are there the S-VIDEO signal inputs at pins (AF30) (Y) and (AF29) (C) of IC8001 (CPU)? NO Check the line between pins (3) (Y)/(4) (C) of J504 and pins (AF30)/(AF29) of IC8001. (Q519 and Q520, etc.
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LC-46/52E77U 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 (19) of tuner (TU1101)? Are there the video signal outputs (IF_P/N) at the pins (12) and (13) of tuner (TU1101)? NO Check TU1101 and its peripheral circuits (TUN_SDA: Pin8 of TU1101 TUN_SCL: Pin9 of TU1101, etc.).
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LC-46/52E77U No video (5) PC: No external input video [INPUT-4] Is INPUT-4 selected on the input select menu screen? NO Select INPUT-4 on the input select menu screen for the right input signal. Is IC1809 (EEPROM) accessed by I2C, with PC connected, to read the DDC_I2C SCL/SDA data? Check the DDC line and its peripheral circuits. (IC1809 and its peripherals).
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LC-46/52E77U No video (6)-1 HDMI: No external input video [INPUT-5] HDMI: No external input video [INPUT-7] Is INPUT-5 selected on the input select menu screen? Is INPUT-7 selected on the input select menu screen? NO Select INPUT-5 on the input select menu screen for the right input signal. NO Select INPUT-7 on the input select menu screen for the right input signal.
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LC-46/52E77U No video (6)-2 HDMI: No external input video [INPUT-6] HDMI: No external input video [INPUT-8] Is INPUT-6 selected on the input select menu screen? Is INPUT-8 selected on the input select menu screen? NO Select INPUT-6 on the input select menu screen for the right input signal. NO Select INPUT-8 on the input select menu screen for the right input signal.
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LC-46/52E77U No video (6)-3 HDMI:No external input video [INPUT-9] Is INPUT-9 selected on the input select menu screen? NO Select INPUT-9 on the input select menu screen for the right input signal. YES Does the HOT PLUG detection function? Does the DDC5V signal come from pin(18) of SC1803 to pin(46) of IC1801(HDMI_SW2)? NO Check the line between the input terminals of SC1803 and IC1801. Check IC1801 and its peripheral circuits (SDA1:pin53 of IC1801/SCL1:pin54 of IC1801, etc.).
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LC-46/52E77U No audio (1)-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? NO Refer to “: No external input video [INPUT-1]”. NO Refer to “: No external input video [INPUT-2]”. YES Is the audio output selected for “VARIABLE” on the menu screen? YES Is the audio output selected for “VARIABLE” on the menu screen? NO Set the audio output to “FIXED”. NO Set the audio output to “FIXED”.
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LC-46/52E77U No audio (1)-2 INPUT-3 No audio. Is INPUT-3 selected on the input select menu screen? NO Refer to “: No external input video [INPUT-3]”. YES Is the audio output selected for “VARIABLE” on the menu screen? NO Set the audio output to “FIXED”. YES Does the audio signal come from pins (5) (L) and (4) (R) of input terminal (J501) to pins (U27) (L) and (U26) (R) of IC8001 (CPU)? NO Check the line between J501 and IC8001.
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LC-46/52E77U 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? NO Refer to “: No external input video [INPUT-4]”. NO Refer to “: No external input video [INPUT-6]”. YES Is the audio output selected for “VARIABLE” on the menu screen? YES Is the audio output selected for “VARIABLE” on the menu screen? NO Set the audio output to “FIXED”.
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LC-46/52E77U 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? NO Refer to “No video at UHF/VHF broadcast signal reception”. NO Refer to “No video at digital broadcast signal reception”. YES YES Is the audio output selected for “VARIABLE” on the menu screen? If no video appears, refer to “No video at digital broadcast signal reception”.
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LC-46/52E77U 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 INPUT-5 selected on the input select menu screen? [INPUT-6 input] Is INPUT-6 selected on the input select menu screen? [INPUT-7 input] Is INPUT-7 selected on the input select menu screen? [INPUT-8 input] Is INPUT-8 selected on the input select menu screen? [INPUT-9 input] Is INPUT-9 selected on
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LC-46/52E77U No audio signal at Digital Audio Output terminal (Analog sound heard) No INPUT-5/6/7/8/9 (HDMI) audio. No audio at digital broadcast signal reception. If no video appears, refer to “No external input video (HDMI) [INPUT-5/6/7/8/9]”. If no video appears, refer to “No video at digital broadcast signal reception”. Is there the SPDIF signal output (OPT_OUT) at pin (J28) of IC8001 (CPU)? NO Check the IC8001 and its peripheral circuits.
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LC-46/52E77U No monitor audio output Is the audio output from the monitor set at “VARIABLE” or “FIXED” on the menu screen? NO Check IC8001 (CPU) and its peripheral circuits. YES Are there the audio signal outputs at pins (N27) (PGA1OUT_L) and (N28) (PGA1OUT_R) of IC8001 (CPU)? NO Check IC8001 (CPU) and its peripheral circuits.
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LC-46/52E77U LED flashing timing chart for error notification. 250ms 1sec 1) Power LED (Large classification) Error type Lamp error Flashes once: Fast Power green LED operation (1 cycle) H: On L: Off Power error Flashes twice Communication error with the main CPU Flashes 3 times Vsync error Flashes 4 times Monitor temperature error Flashes 5 times H: On L: Off H: On Refer to “Communication error details”.
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LC-46/52E77U 2) Power error details (Power LED flashes twice and OPC LED flashes) Error type Pins are monitor microprocessor pins unless otherwise specified. DET_10V (57pin). UR10V or A9V is not applied. If error is detected during operation, error standby is activated by polling. OPC LED operation (1 cycle) DET_10V error Flashes once H: On L: Off H: On DET_D3V3 error Flashes twice DET_D3V3 (59pin) error (L). D3.3V is not applied.
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LC-46/52E77U Service Manual LC46E77U CHAPTER 7.
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LC-46/52E77U [2] SYSTEM BLOCK DIAGRAM /#+0 %8$5 .4 . 4 %QORQPGPV +0276 +0276 5+&' 5 8KFGQ .4 ;2D2T 5*+2A'0 20'.A'0 5 8KFGQ &'6'%6 . 4 %QORQPGPV ;2D2T %8$5 %8$5 .4 . 4 ‫ޣ‬.9‫ޤ‬2 R ((% +0276 $7 8 #/2A/76' +% 4GUGV 56#0&$; 2416'%6 456A(.5A%27 (TQO %27 &KUENGVG /WVG &KUENGVG /WVG 8DTV 8 41/5'. (4#/' 4 .
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LC-46/52E77U Service Manual LC46E77U CHAPTER 8.
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LC-46/52E77U [2] MAIN Unit MAIN Unit (Side A) J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 11 8–2 12 13 14 15 16 17 18 19
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LC-46/52E77U MAIN Unit (Chip Side A) J J501 SC1601 J8001 LUG1101 C2029 LUG1106 BAR1 R2037 SG2508 SG2507 D9604 P2502 FB2502 R2510 R8003 R8153 R8154 R8005 R8004 C8179 C8168 C8169 C8170 C8160 C8161 C8162 C8163 C8171 R8157 VER1 C9625 C9623 C8178 R8620 R8615 X8601 C8601 R8055 R8056 R8050 C9619 FB2614 FB2601 FB2615 FB2633 L9603 IC8601 R8625 Q9602 R8623 C8452 D9607 R8624 R9608 C8451 C8462C8461 C8453 C9616 R8622 L9602 C2602 R8457 R8456 R9018 R9011 R8475 R8474 L9701 R805
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LC-46/52E77U MAIN Unit (Side B) J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 11 8–4 12 13 14 15 16 17 18 19
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1 2 3 FB9709 FB9711 FB9708 FB9707 FB9706 FB9705 FB9704 FB9703 TL9716 TL9733 TL9717 TL9708 TL9724 TL9705 TL9704 IC970 3 4 R9736 Q9701 R9739 C9711 R9740 C9709 R9705 D9701 Q9702 R9704 R9738 5 C9701 6 D9702 IC9701 7 R9741 8 9 10 8–5 R9702 11 12 13 14 15 TL2701 R1132 C1136 C2740 FB2703 C2741 FB2702 16 FD4 C2737 FB2705 C2738 FB2704 TL2703 TL2704 D524 TL2702 C521 L503 R619 C514 C506 D525 TL512 TL553 TL552 TL501 TL504 TL551 TL549 LF2 TL550 TL514 TL513 TL511 TL503 TL502 TL528
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LC-46/52E77U [3] LED Unit LED Unit (Side A) J I H G F LED Unit (Chip Side A) 3 R116 R115 R103 P101 D102 D103 R114 R107 Q105 Q102 C104 R120 R113 R109 C101 Q103 P102 LF3 D R105 R106 C102 Q104 E RMC101 SLD101 IC101 C103 R110 D104 C B A 1 2 3 4 5 6 7 8 9 10 11 8–6 12 13 14 15 16 17 18 19
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LC-46/52E77U Service Manual LC46E77U CHAPTER 9. SCHEMATIC DIAGRAM [1] 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 generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester. 2. INDICATION OF RESISTOR & CAPACITOR: RESISTOR 1) The unit of resistance "Ω" is omitted. (K=kΩ=1000Ω, M=MΩ).
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LC-46/52E77U [2] SCHEMATIC DIAGRAM 1.
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LC-46/52E77U 2. MAIN UNIT-1 MAIN1 (TUNER) J I H G *TU1101 AA033WJQZ TO MAIN12(EXBUS) CVBS3 CVBS3_CM 19 VIDEO R1130 R1124 0 F AFT_CPU 0 TO MAIN8(UCOM) R1103 0 TU_AFT 17 AFT_OUT E *C1131 *C1125 1u 10V CYB Q1102 KTC3875SG 3.8 R1140 0 C1107 1000P CZB *R1136 100 CZ 3.2 SIF SIF_CM R1119 1.8K 10 R1127 0 R1120 2.2K R1125 NC R1128 4.7K 10K C1116 0.01u 25V C1119 0.047u 10V IF_AGC 9 SCL TO MAIN9(CPU) 1.6 Q1101 KTC3875SG R1114 3.9K TU_AS R1121 100 2.
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LC-46/52E77U 3. MAIN UNIT-2 MAIN2(A_TERM) INPUT3 INPUT1 J501 GA079WJ J INPUT2 J507 J508 GA109WJ GA108WJ MAIN UNIT 2/16 J502 GA108WJ J504 J503 DA035WJ FA039WJ DUNTKE833WE03 J505 FA039WJ W R 1 7 6 2 5 3 4 1 2 3 4 5 6 7 1 2 3 4 5 6 1 7 2 3 4 5 6 2 3 4 3 2 1 (PWBXE833WJ) W R 1 4 1 7 7 5 2 3 4 6 C540 1u 10V CYB R552 220 FB521 A204WJ C565 R569 75 1/10W R555 220 0.
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LC-46/52E77U 4. MAIN UNIT-3 MAIN3 (AMP IF) 4 TO MAIN16(POWER2) UR13V L1301 10uH CEM 3 J 0.0 3.3 5 *R1311 22 4 VCC TO MAIN15(POWER1) I C1312 0.1u 10V KZA616WJQZ *C1310 0.1u 25V D3.3V C1311 10u Y 5 1 2 A5V Z 25V D1306 GPFSV51M SPDIF BUFFER OPTICAL OUTPUT & SPDIF MUTE B TO MAIN17(SP_IF) 1 *R1333 22K A 2 0.0 GND AHC1G08W 3 0.0 *IC1304 0.0 *Q1312 KRC404E *R1305 0 0.0 TO MAIN9(CPU) 5.0 CPU_SPDIF_OUT TO MAIN4(AMP) 0.0 H N_STANDBY N_PROTECT AMP_MUTE R1335 5.
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LC-46/52E77U 5. MAIN UNIT-4 MAIN4(AMP) J MAIN UNIT 4/16 TO MAIN3(AMP IF) DUNTKE833WE03 N_STANDBY (PWBXE833WJ) R2719 5.6K I N_PROTECT C2725 0.1u 25V R2752 220K F AMP_MUTE L2701 22uH PA343WJPZ VS Q2704 KRC404E C2730 0.22u 25V H C2726 0.
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LC-46/52E77U 6. MAIN UNIT-5 MAIN5 (HDMI_SW1) TO MAIN17(SP_IF) SP_CLKN SP_CLKP J SP_CLKN MAIN UNIT 5/16 SP_CLKP DUNTKE833WE03 (PWBXE833WJ) SP_D0N SP_D0N SP_D0P SP_D0P TO MAIN9(CPU) SP_D1N SP_D1N SP_D1P SP_D1P SP_D2N SP_D2N C1624 0.1u 10V R1665 10K J R1663 10K SP_D2P SP_D2P TO MAIN8(UCOM) HDMI_CEC_O_UCOM SP_HPD SP_HPD SP_SCL SP_SCL 5 4 VCC OUT C1623 0.
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LC-46/52E77U 7. MAIN UNIT-6 MAIN6 (HDMI_SW2) MAIN UNIT 6/16 TO MAIN15(POWER1) DUNTKE833WE03 D3.
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LC-46/52E77U 8. MAIN UNIT-7 MAIN7 (PANEL) MAIN UNIT 7/16 TO_MAIN16(POWER2) DUNTKE833WE03 5V J TO_MAIN15(POWER1) (PWBXE833WJ) D3.
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LC-46/52E77U 9. MAIN UNIT-8 MAIN8 (UCOM) TO MAIN15(POWER1) D3.3V MAIN UNIT 8/16 TO MAIN16(POWER2) J DUNTKE833WE03 BU3.
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LC-46/52E77U 10. MAIN UNIT-9 MAIN9 (CPU) MAIN UNIT 9/16 TO MAIN16(POWER2) DUNTKE833WE03 A8V CPU_BU_3.3V BU3.3V (PWBXE833WJ) BU_PS_ON TO MAIN15(POWER1) 1 A3.3V TO MAIN14(EXIF) 6 J C8062 0.1u 10V D3.3V R8078 1K C8066 0.1u 10V CPU_TCK CPU_TCK CPU_TDI CPU_TDI CPU_TDO 5 2 A1.2V C8064 0.1u 10V CPU_TDO D1.1V CPU_TMS CPU_TMS CPU_TRST D1.8V 4 3 CPU_TRST C8039 TO MAIN13(CONN) 4.7u 10V KZA067WJ SCL0 C8040 0.1u 10V C8041 0.1u 10V C8042 0.1u 10V C8043 0.1u 10V C8044 0.1u 10V C8045 0.
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LC-46/52E77U 11. MAIN UNIT-10 MAIN10 (DDR) J C8184 10u 10V KZA616WJQZ C8174 1u 10V KZA520WJQZ MAIN UNIT 10/16 NC A1 A2 DUNTKE833WE03 A7 A3 A8 (PWBXE833WJ) A9 N_DDR_DQS1 B1 B3 B2 B7 DDR_DQM1 DDR_DQ14 B8 B9 DDR_DQ15 DDR_DQS1 C8186 0.1u C3 C2 DDR_DQ9 C8180 0.1u TO MAIN9(CPU) C1 TO MAIN15(POWER1) C7 C8 DDR_DQ0 C9 DDR_DQ1 DDR_DQ8 D1.
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LC-46/52E77U 12. MAIN UNIT-11 MAIN11 (EPROM) J MAIN UNIT 11/16 DUNTKE833WE03 (PWBXE833WJ) I TO MAIN15(POWER1) D3.3V H TO MAIN16(POWER2) IC8453 512Mbit N_POCE1 N_POCE1 0.0 N_POOE PDD0 PDD0 PDD1 PDD2 PDD5 PDD6 PDD2 0.0 0.0 PDD5 N_PARB PDD6 N_POOE R8451 47 0.0 3.3 3.3 PDD7 PDD7 N_POCE1 PAALE PAALE 3.3 PACLE PACLE 0.0 N_PARB N_PARB E 0.0 PDD4 PDD4 0.0 PDD1 PDD3 PDD3 F R8455 4.7K N_POOE R8453 4.7K G 0.0 N_POWE N_POWE C8455 0.1u CZB 3.3 0.0 0.0 0.0 PACLE 0.
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LC-46/52E77U 13. MAIN UNIT-12 MAIN12 (EXBUS) J TO MAIN8(UCOM) L_R TEMP2 TO MAIN15(POWER1) ROMSEL0 D3.
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LC-46/52E77U 14. MAIN UNIT-13 MAIN13 (CONN) J TO MAIN15(POWER1) MAIN UNIT 13/16 D3.3V TO MAIN16(POWER2) DUNTKE833WE03 BU3.3V (PWBXE833WJ) 5V BU5V I IC9001 TC7W00U TO MAIN8(UCOM) IRPASS CZF C9003 0.1u 25V Z 8 7 6 2 3 5 D9002 VCC MA111G H R9023 CZ R9002 10K 0 CZ GND 1 4 Q9001 RN1102 TO MAIN8(UCOM) RC TO MAIN14(EXIF) G 0 0 CPU_TXD0_UCOM 0 CPU_RXD0_UCOM TO MAIN8(UCOM) CPU_TXD0_UCOM CPU_RXD0_UCOM SC9001 NA769WJ R9018 10K CZ FB9003 A192WJ 11 F R9026 4.
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LC-46/52E77U 15.
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LC-46/52E77U 16. MAIN UNIT-15 MAIN15 (POWER1) R9619 4.7K MAIN UNIT 15/16 (PWBXE833WJ) C9627 4700P 25V CZB NC 25V CZB 7 CZB 0.796 5 COMP H F BS SW GND CYB C9624 0.1u 25V 5V Vin UR13V 1 2 3 4 1 2 3 4 NC. C9632 10u 10V KZA616WJQZ R9630 1 1/2W GND NC. Vout TO MAIN6(HDMI_SW2) D3.3V D9604 D1FS4A VHD TO MAIN7(PANEL) D3.3V CE Sub Vin 5 6 7 D3.3V C9605 1u 10V TO MAIN3(AMP IF) D3.3V KZA520WJQZ TWF TWF TO MAIN8(UCOM) TO MAIN2(A_TERM) L9601 15uH PA898WJ D3.3V 5.
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LC-46/52E77U 17. MAIN UNIT-16 MAIN16 (POWER2) J TO MAIN2(A_TERM) A5V IC9703 G 10K 2 UR13V 3 UR13V 4 GND 5 GND 6 GND 7 GND 8 AC_DET 9 PS_ON 10 BU5V 11 PNL_ON 12 ON 56K CZ CZ A8V A375WJQZ FB9703 A375WJQZ FB9704 A375WJQZ N.C 4 1 UR13V 2 UR13V GND 3 FB9702 A5V R9701 R9702 Vout To Power Unit PD H VIn 5 CZ 1 I 15 TO MAIN1(TUNER) TCR5SB33 R9706 P9701 NA181WJ C9713 4.7u 6.
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LC-46/52E77U 18.
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LC-46/52E77U - MEMO - 9 – 20
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LC-46/52E77U PartsGuide PARTS GUIDE No. S37X3LC46E77U LCD COLOR TELEVISION LC-46E77U MODELS LC-52E77U Note: The reference numbers on the PWB are arranged in alphabetical order.
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LC-46/52E77U NO.
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LC-46/52E77U NO. PARTS CODE PRICE NEW RANK MARK DESCRIPTION PART DELIVERY [4] DUNTKE833FM03 (MAIN Unit) N N N N N N PCLICA004WJKZ PSPAZC152WJKZ PSPAZC227WJKZ PSPAZC230WJKZ PSPAZC232WJKZ PSPAZC233WJKZ AC AG AC AC AK AK N N N N J J J J J J CLIP SPACER SPACER SPACER SPACER SPACER J J J J J J J J J J J J J J J J J J J J J J J J J 0.01 50V Ceramic 10 16V Electrolytic 100 16V Electrolytic 2.
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LC-46/52E77U [6] CABINET AND MECHANICAL PARTS (LC-46E77U) LCD Module Assembly 34 38 27 1-1 7 1-3 35 1-6 1-6 38 1-5 1-3-1 1-3-2 33 R/C, LED Unit 4-1 1-2-1 1-4 4-2 42 8 2-1 1-2-2 6 KEY Unit 1 4 31 1-2 POWER Unit 25 41 39 30 2 26 11 40 2-2 R 9 41 22 28 29 17 41 41 9 17 R 18 20 41 37 18 21 23 24 13 12 16 18 32 MAIN Unit 14 3-1 3 19 41 10 15 41 5 5-3 15 36 㧽 5-1 5-2 16 43 3-2 17 X5 㧽 41
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LC-46/52E77U NO.
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LC-46/52E77U [7] LCD MODULE Assembly (LC-46E77U) 11 15 1 21 21 12 19 16 4 20 5 18 7 3 24 13 6 14 8 22 9 10 22 23 2 18 25 20 17
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LC-46/52E77U NO.
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LC-46/52E77U [8] CABINET AND MECHANICAL PARTS (LC-52E77U) 40 LCD Module Assembly 26 27 33 1-1 28 7 41 1-6 1-6 1-3 1-5 1-3-1 39 1-3-2 R/C, LED Unit 45 W 1-4 1-2-1 8 6 1-2-2 1 1-2 4-1 W 4-2 19 37 45 47 44 46 KEY Unit 31 46 9 㧿 11 2 4 46 9 36 19 32 R POWER Unit 17 13 47 45 35 㨀 13 45 㧽 2-2 47 13 47 S 12 45 34 21 46 16 㨂 14 18 MAIN Unit 17 㨂 10 46 46 5 5-3 15 㨁㧽 5-1 16 5-2 42 20 25 46 20 22 48 3-2 3-1 X5 23 㨁 46 43 21 47 㨀 24 29 38
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LC-46/52E77U NO.
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LC-46/52E77U [9] LCD MODULE Assembly (LC-52E77U) 18 11 17 20 1 20 15 25 21 21 12 4 16 5 7 3 24 13 6 14 8 22 9 10 22 23 2 22 19
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LC-46/52E77U NO.
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LC-46/52E77U [11] PACKING PARTS (NOT REPLACEMENT ITEM X6 X7 X8 X9 S6 X2 X4 S5 X1 S4 X3 S4 S4 S3 X5 S4 S4 S4 S2 S1 S8 S7 S9 NO.
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LC-46/52E77U NO.
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LC-46/52E77U COPYRIGHT © 2009 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. SHARP CORPORATION Mar. 2009 TQ2726-S SH.