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LC-26GA5E LC-26GA5E LC-32GA5E LC-32GA5E
1st Edition
SERVICE MANUAL
Issued:23rd Dec. 2004
LCD COLOUR TELEVISION
PAL B/G, D/K, I / SECAM L/L' SYSTEM COLOUR TELEVISION
MODEL
LC-26GA5EE/F/I/K/RU LC-32GA5EE/F/I/K/RU
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
ELECTRICAL SPECIFICATIONS ........................................................................ 3 IMPORTANT SERVICE SAFETY PRECAUTIONS......................................................... 4 DIMENSIONS ......................................................................................................... 6 REMOVING OF MAJOR PARTS .................................................................................... 7 SERVICE ADJUSTMENTS .......................................................................................... 11 TROUBLESHOOTING TABLE ............................................................................................ 21 CHASSIS LAYOUT .......................................................................................... 27 BLOCK DIAGRAMS ................................................................................................. 29 OVERALL WIRING DIAGRAMS ................................................................................................. 33 SCHEMATIC DIAGRAMS ......................................................................................... 35 PRINTED WIRING BOARDS ................................................................................. 58 REPLACEMENT PARTS LIST ........................................................................... 65 PACKING OF THE SET ........................................................................................91 MAJOR ICs INFORMATION .................................................................................................. 93 SOURCE OF DOCUMENTATION ................................................................................... 110
Subject to modification.
SHARP CORPORATION This document has been published to
1
be used for after sales service only.
LC-26GA5E LC-32GA5E
SERVICE MANUAL UPDATE LOG SHEET
Technical Report No. Technical Bulletin No. Cause / Solution Part No. Page No. Application Data /Serial No.
Use this page to keep any special servicing information as Technical Report (Bulletin), Technical Information, etc. If only part number changes are required, just change part number directly the part number in the Parts Listing Section. If you need more information, please refer to the Technical Report (Bulletin).
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LC-26GA5E LC-26GA5E LC-32GA5E LC-32GA5E
ELECTRICAL SPECIFICATIONS
Item
LCD panel Number of dots Video Colour System TV Function TV-Standard (CCIR) Receiving Channel VHF/UHF CATV
26o LCD COLOUR TV, Model: LC-26GA5E
26o Advanced Super View & BLACK TFT LCD
32o LCD COLOUR TV, Model: LC-32GA5E
32o Advanced Super View & BLACK TFT LCD
37o LCD COLOUR TV, Model: LC-37GA5E
37o Advanced Super View & BLACK TFT LCD
3,147,264 dots (1366 g 768 g 3 dots) PAL/SECAM/NTSC 3.58/NTSC 4.43/PAL 60 B/G, I, D/K, L, L' E2E69ch, F2F10ch, I21I69ch, IR AIR Jch Hyper-band, S1S41ch Auto Preset 99 ch, Auto Label, Auto Sort NICAM/A2 87.5-108 MHz 140 CH 450 cd/m2 60,000 hours (at Backlight Standard position) H : 170° V : 170° 10W g 2 Ø 8 cm 2pcs Rear ANTENNA IN FM Radio in EXT 1 EXT 2 EXT 3 EXT 4 PC INPUT AV OUTPUT Headphones UHF/VHF 75 q Din type Din type SCART (AV input/output, RGB input, TV output) SCART (AV input/output, Y/C input, AV Link) S-VIDEO (Y/C input), RCA pin (AV input) RCA pin (component input) D-sub 15 pin (ANALOG RGB), Ø 3.5 mm Jack (Audio Input) RCA pin (Variable/Fixed) Ø 3.5mm jack (Audio output) English/German/French/Italian/Spanish/Dutch/Swedish/Portuguese/Finnish/Turkish/Greek/ Russian/Polish AC 220240 V, 50/60 Hz 115 W (0.95 W Standby) (Method IEC60107) 12 kg (Display only), 15 kg (Display with stand) AC 220240 V, 50/60 Hz 135 W (0.95 W Standby) (Method IEC60107) 15.5 kg (Display only), 19.5 kg (Display with stand) AC 220240 V, 50/60 Hz 162 W (0.95 W Standby) (Method IEC60107) 18.5 kg (Display only), 22.5 kg (Display with stand)
TV-Tuning System STEREO/BILINGUAL FM RADIO Function Brightness Backlight life Viewing angles Audio amplifier Speakers Terminals Receiving Frequency: Receiving Channel:
OSD language Power Requirement Power Consumption Weight
· As a 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. There may be some deviations from these values in individual units.
NOTE
· Refer to inside back cover for dimensional drawings.
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LC-26GA5E LC-32GA5E
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. 2. Disconnect AC power before servicing.
BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)
Before returning the receiver to the user, perform the following safety checks: 1. Inspect all lead dress to make certain that leads are not pinched, and check that hardware is not lodged between the chassis and other metal parts in the receiver. 2. Inspect all protective devices such as non-metallic control knobs, insulation materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacitor networks, mechanical insulators, etc. 3. To be sure that no shock hazard exists, check for leakage current in the following manner. · Plug the AC cord directly into a 110~240 volt AC outlet, and connect the DC power cable into the receiver's DC jack. (Do not use an isolation transformer for this test). ·Using two clip leads, connect a 50k ohm, 10 watt resistor paralleled by a 0.15µF capacitor in series with all exposed metal cabinet parts and a known earth ground, such as electrical conduit or electrical ground connected to an earth ground. ·Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across the resistor. ·Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor. All checks must be repeated with the AC cord plug connection reversed. (If necessary, a nonpolarized adaptor plug must be used only for the purpose of completing these checks.) Any reading of 0.75V peak (this corresponds to 0.5 mA. peak AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the monitor to the owner.
DVM AC SCALE
50k ohm 10W
0.15 F TEST PROBE
TO EXPOSED METAL PARTS
CONNECT TO KNOWN EARTH GROUND
SAFETY NOTICE
Many electrical and mechanical parts in LCD television have special safety-related characteristics. These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily increased by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual; electrical components having such features are identified by " " and shaded areas in the Replacement Parts Lists and Schematic Diagrams. For continued protection, replacement parts must be identical to those used in the original circuit. The use of a substitute replacement parts which do not have the same safety characteristics as the factory recommended replacement parts shown in this service manual, may create shock, fire or other hazards.
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LC-26GA5E LC-26GA5E LC-32GA5E LC-32GA5E
PRECAUTIONS FOR USING LEAD-FREE SOLDER 1 Employing lead-free solder
"ALL PWB" 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. Example:
LFa
Indicates lead-free solder of tin, silver and copper.
2 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. As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.
3 Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the conventional lead solder by 40°C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering condition. Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as required. If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use of it. When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper. Be careful when replacing parts with polarity indication on the PWB silk. Lead-free wire solder for servicing.
g Part No. ZHNDAi123250E ZHNDAi126500E ZHNDAi12801KE J J J Description 0.3mm 250g(1roll) 0.6mm 500g(1roll) 1.0mm 1kg(1roll) Code BL BK BM
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LC-26GA5E LC-32GA5E
DIMENSIONS
LC-26/32/37GA5E
(421) / [473] / ((473))
( ) : LC-26GA5E [ ] : LC-32GA5E (( )) : LC-37GA5E : LC-26/32/37 GA5E
(519) / [677] / ((677)) (57) / [109] / ((109))
(663) / [795] / ((917))
108
(567.9) / [700.4] / ((822.6)) (567,9) / [700,4] / ((822,6))
(407) / [479] / ((548))
(556) / [638] / ((707))
(320.6) / [395.1] / ((463.8)) (320,6) / [395,1] / ((463,8))
(504) / [576] / ((645))
(52) / [62] / ((62))
(355) / [400] / ((435))
3.1 3,1 (278) / [307] / ((307))
LC-26GA5E
(100)
LC-32/37GA5E
[200] / ((200))
(100)
[200] / ((200))
[115] / ((104))
(50)
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LC-26GA5E LC-26GA5E LC-32GA5E LC-32GA5E
REMOVING OF MAJOR PARTS
LC-26GA5E REMOVING OF MAJOR PARTS
Removing the stand
Before attaching/detaching stand. Before performing work make sure to turn off the TV. Before performing work spread cushioning over the base area to lay the Display on. This will prevent it from being damaged. Removing 1 screws. Removing 2 screws. Removing 4 screws.
Removing 3 screws.
Removing 2 screws. Removing 3 screws.
Removing 4 screws. Stand
Removing the Center Angle.
Take off the center angle by removing 4 screws and disconnecting. Removing 2 screws.
Center Angle
Removing 2 screws.
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LC-26GA5E LC-32GA5E
Removing the PWB UNIT.
CONTROL PWB UNIT INVERTER-GND PWB UNIT
LCD CONTROLLER PWB UNIT
INVERTER PWB UNIT POWER PWB UNIT
MAIN PWB UNIT COMPONENT INPUT PWB UNIT
R/C, LED PWB UNIT
SPEAKER UNIT
Speaker relay connector.
1. Removing the INVERTER PWB UNIT. 1) Right end connectors for lamps are removed. 2) The connector PG concluded with the power supply unit is removed. 3) Four screws of are removed. 2. Removing the INVERTER-GND PWB UNIT. 1) Left end connectors for lamps are removed. 2) Three screws of are removed. 3. Removing the LCD CONTROLLER PWB UNIT. 1) Two connectors of are removed. 2) Six screws of are removed. 4. Removing the POWER PWB UNIT. 1) The connector PG concluded with the inverter unit is removed. 2) Four screws of are removed. 5. Removing the MAIN PWB UNIT and COMPONENT INPUT PWB UNIT. Eight screws of are removed. 6. Removing the CONTROL PWB UNIT. wo screws of are removed. 7. Removing the R/C-LED PWB UNIT. One screws of are removed. 8. Removing the Speaker UNIT. 1)A speaker relay connector is removed from a cabinet and it dissociates 2) It draws out perpendicularly then.
8
LC-26GA5E LC-26GA5E LC-32GA5E LC-32GA5E
LC-32GA5E REMOVING OF MAJOR PARTS
Removing the stand
Before attaching/detaching stand. Before performing work make sure to turn off the TV. Before performing work spread cushioning over the base area to lay the Display on. This will prevent it from being damaged. Removing 1 screws. Removing 4 screws.
Removing 2 screws.
Removing 2 screws. Removing 2 screws.
Removing 2 screws.
Removing 3 screws. Stand Removing 4 screws.
Removing 3 screws.
Removing the Center Angle.
Take off the center angle by removing 7 screws and disconnecting. Removing 2 screws. Center Angle
Removing 5 screws.
9
LC-26GA5E LC-32GA5E
Removing the PWB UNIT.
1. Removing the INVERTER-A PWB UNIT. 1) Right end connectors for lamps are removed. 2) The connector (CN7501, CN7502) concluded with the power supply unit is removed. 3) Four screws of are removed. 2. Removing the INVERTER-B PWB UNIT. 1) Right end connectors for lamps are removed. 2) The connector (CN7401) concluded with the INVERTER-A unit is removed. 3) Four screws of are removed. 3. Removing the INVERTER-GND PWB UNIT. 1) Left end connectors for lamps are removed. 2) Six screws of are removed. 4. Removing the LCD CONTROLLER PWB UNIT. 1) Two connectors of are removed. 2) Six screws of are removed. 5. Removing the POWER PWB UNIT. 1) The connector PG concluded with the inverter unit is removed. 2) Four screws of are removed. 6. Removing the MAIN PWB UNIT and COMPONENT INPUT PWB UNIT. Eight screws of are removed. 7. Removing the CONTROL PWB UNIT. wo screws of are removed. 8. Removing the R/C-LED PWB UNIT. One screws of are removed. 9. Removing the Speaker UNIT. 1)A speaker relay connector is removed from a cabinet and it dissociates 2) It draws out perpendicularly then.
10
LC-26GA5E LC-26GA5E LC-32GA5E LC-32GA5E
SERVICE ADJUSTMENTS
Remote Control Unit
RADIO Displays the RADIO Menu screen and make adjustments for FM RADIO mode.
1 (Subpage) Displays the Teletext Subpage.
(3 Hold) Temporarily holds the current Teletext page.
TIMER Displays the FEATURE TIMERS Menu screen directly. k (Reveal) Displays hidden information such as solutions to riddles and puzzles in Teletext mode.
B (Standby/On) Turns on and off the power or enters standby mode.
[ (Subtitle) Displays the Teletext Subtitle directly.
p (Display/Info) Displays the programme information. m (Teletext) Displays the Teletext mode
OK Volume and Right/ Left Selection END Returns to normal screen. Red Displays the PICTURE LEVELS Menu directly. Green Displays the SOUND SPEAKER LEVELS Menu directly. i (e)/(f) (Volume) i (e) Increases the volume. i (f) Decreases the volume. Programme Select Changes channels or sets the page in Teletext mode. A (Flashback) Returns to the previous channel. Sound Select the sound multiplex mode. Programmes list, Upwards/ Downwards Selection
MENU Displays the menu. Blue Teletext mode: Select a page. Menu mode: MaKe some adjustments. Yellow Teletext mode: Select a page.
M (Mute) Switches the sound on and off.
P (r)/(s) r Increases programme number. s Decreases programme number.
Virtual Displays the SOUND DOLBY EFFECTS Menu screen.
b (Input mode) Displays the input source between TV, EXT1, EXT2, EXT2 S-VIDEO, EXT3, EXT3 S-VHS, EXT4 and PC INPUT modes.
f (WIDE mode) Displays the WIDE MODES Menu screen directly, to select your desired screen size. Sets the area of maginification in Teletext mode.
11
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TROUBLE SHOOTING TABLE
Previously to start following the behing troubleshooting tables, consider the below situations.
Problem
· No power.
Possible Solution
· Is the AC cord disconnected? · Has the power been turned on? · Make sure the a (POWER) switch of the TV is set to ON. · External influences such as lightning, static electricity, etc., may cause improper operation. In this case, operate the unit after first turning the power off, or unplugging the AC cord and re-plugging it in after 1 or 2 minutes. · · · · · · · · Are batteries inserted with polarity (e, f) aligned? Are batteries worn out? (Replace with new batteries.) Are you using it under strong or fluorescent lighting? Is a fluorescent light illuminated to remote control sensor? Adjust the picture levels. Is the room too bright? The picture may look dark in a room that is too bright. Check the system setting. Check the input type setting.
· Unit cannot be operated.
· Remote control unit does not operate.
· Strange colour, light colour, or dark, or colour misalignment.
· Power is suddenly turned off.
· The unit's internal temperature has increased. Remove any objects blocking vent or clean. · Check the power control setting. · · · · · · Is connection to other components correct? Has input type setup been done correctly after connection? Is the correct input selected? Is a non-compatible signal being input? Is picture adjustment correct? Is the antenna connected properly?
· No picture.
· No sound.
· Is the volume too low? · Make sure that headphones are not connected. · Make sure the sound is not set to Mute.
Cautions regarding use in high and low temperature environments
· When the unit is used in a low temperature space (e.g. room, office), the picture may leave trails or appear slightly delayed. This is not a malfunction, and the unit will recover when the temperature returns to normal. · Do not leave the unit in a hot or cold location. Also, do not leave the unit in a location exposed to direct sunlight or near a heater, as this may cause the cabinet to deform and the LCD panel to malfunction. Storage temperature: 20°C to +60°C (4°F to +140°F).
21
No video output (1)
LC-26GA5E LC-32GA5E
External input in trouble NO Select Ext 1 and the input signal in the input switching menu screen Is there R,G and B at pins 5 , 2 and 12 at IC1403 as specified ? YES NO Check SC 1451 connector and peripherical components.
External input R,G,B in trouble
Is Ext 1 selected in the input switching menu screen ? YES
1. No video output (1 / 3)
Is there video signal input at pin 58 of IC 1001 ? YES
NO Check SC1451 and peripherical components
Is there R, G and B signal input at pins 67, 68 and 69 of IC 1001 as specified ? YES
NO Check IC 1403, Q 1412 and peripherical components
5 5
No video output (2)
External input in trouble NO Select Ext 2 and the input signal in the input switching menu screen
External input in trouble NO Select Ext 2 S-VIDEO and the input signal in the input switching menu screen
Is Ext 2 selected in the input switching menu screen ? YES
22
NO Check SC1452 and peripherical components
Is there video signal input at pin 64 of IC 1001 ? YES
Is Ext 2 S-VIDEO selected in the input switching menu screen ? YES NO There are video on screen ? YES Is there chroma signal input at pin 66 of IC 1001 ? YES
NO Check SC1452 and peripherical components
5
No video output (3)
5
External input in trouble NO Select Ext 3 and the input signal in the input switching menu screen
External input in trouble NO Select Ext 3 S-VIDEO and the input signal in the input switching menu screen
Is Ext 3 selected in the input switching menu screen ? YES
Is there video signal input at pin 60 of IC 1001 ? YES
NO Check J 401and peripherical components
Is Ext 3 S-VIDEO selected in the input switching menu screen ? YES NO There are video on screen ? YES Is there chroma signal input at pin 63 of IC 1001 ? YES
NO Check J 403and peripherical components
5
5
No video out ( TV)
RF input in trouble
Is TV select in the input switching menu screen ? Yes Is there video signal output at pin 58 of IC 1001 Yes No
2. No video output (2 / 3)
No
Select TV in the input switching menu screen
Check tuner TU 1202 and peripherical components
5
5
No Check IC1001, IC1002, IC 1003 and peripherical components.
Is there digital video output at pins 71, 72, 73, 74, 75, 78, 79 80 and synchro signals 81 and 82 of IC 1001 as specified ?
23
Yes Check LCD Control PWB
Is there R , G, B and synchro output signals at pins 97 , 94 , 91, 34 and 35 of IC6004 as specified ?
No Check IC6004 and peripherical components
No Check IC1001 and peripherical components No Check IC 2205 and IC 1803 and peripherical components No Check IC 2206 and peripherical components
No Check IC2201, IC 2210 and IC2202 and peripherical components No Check IC2207 and peripherical components
Yes Is there R , G, B output signals at pins No Check IC1001 and peripherical Is there synchro out signals at pins 1,144 and 143 of IC 1001 as specified ? components 11 and of IC 1001 as specified ? Yes Yes Is there R , G, B input signals at pins No Check Q1802, Q1803 , Q1804 Is there synchro input signals at 2, 5 and 14 of IC 1801 as specified? and peripherical components pins 4 and 13 of IC 2206 as specified ? Yes Yes Is there R , G, B input signals at pins No Check IC 1801 and IC 1802 Is there synchro input signals at 4, 5 and 11 of IC 2203 as specified? and peripherical components pins 64 and 65 of IC 2201 as specified ? Yes Is there R , G, B input signals at pins No Check IC 2203 and IC 1803 Yes 37, 43 and 50 of IC 2201 as specified? and peripherical components Yes Is there digital output signals at pins (DEB) 66, 67, 70, 71, 73, 74, 77, 78 (DEG) 79, 80, 81, 82, 85, 86, 87, 88 (DER) 89, 90, 91, 92, 93, 94, 97, 98 (DOB) 98, 99, 108,109,110, 111, 112, 113 (DOG) 114...121, (DOR) 124....131 and (DVS) 101, (DHS) 102, (DEN) 103 and (DCLOK) 106 of IC2201 as specified ? Yes Is there digital output signals at pins 3,4,6,7,9,10,12,13,15,16,18,19,21,22,24,25,27,28,31 and 31 of connector SC2201 as specified ?
LC-26GA5E LC-26GA5E LC-32GA5E LC-32GA5E
No video output (4) External input in trouble Components SD No Select EXT 4 and the input signal in the input switching menu screen No Select HD in main menu Ext 4 HD AV setup External input in trouble Components HD
LC-26GA5E LC-32GA5E
Select EXT 4 and the input signal in the input switching menu screen
3. No video output (3 / 3)
Select SD in main meu Ext 4 SD
AV setup
NO Is EXT 4 selected in the input switching menu screen ? YES NO Is SD select in Main menu?
Is EXT 4 selected in the input switching menu screen ? YES Is HD select in Main menu?
Check Components unit PWB and peripherical components
No Check Components unit PWB and peripherical components No Check IC 1801, IC 1802 and peripherical components No Check IC 2203 , IC 1803 and peripherical components No Check IC 2201 and peripherical components
Check IC 1403, Q 1412 and peripherical components
YES NO Is there Y, Pr and Pb signal input at pins 13, 1 and 3 of IC 1403 as specified ? YES NO Is there Y, Pr and Pb signal input at pins 67, 68 and 69 of IC 1001 as specified ?
YES Is there Y, Pr and Pb signal input at pins 13, 6 and 3 of IC 1801 as specified ? YES Is there Y, Pr and Pb signal output at pins 12 , 4 and 7 of IC1801 as specified ? YES Is there Y, Pr and Pb signal output at pins 12 , 9 and 7 of IC2203 as specified ? Is there Y, Pr and Pb signal input at pins 37, 43 and 50 of IC2201 as specified ?
24
No video output (3) External input in trouble Is PC INPUT selected in the input switching menu screen ? YES YES There are video on screen ? NO NO Select PC INPUT and the input signal in the input switching menu screen Is there R,G,B signal input at pins 6. NO Check SC 2801 and peripherical 10 and 13 of IC 2203 ? components YES Is there R,G,B signal output at pins 7 NO Check IC 2203 , IC1803 and 12 and 9 of IC 2203 ? peripherical components YES Is there R,G,B signal input at pins 37 NO Check IC 2201 and peripherical 43 and 50 of IC 2201 ? components
Check SC 2801 and peripherical NO Is there synchro signal input at components pins 1 and 13 of IC 2205 YES Check IC 2205 , IC1803 and NO Is there synchro signal output at peripherical components pins 14 and 15 of IC 2205? YES Check IC 2206 and peripherical NO Is there synchro signal output at components pins 6 and 11 of IC 2206? YES Check IC 2201 and peripherical NO Is there synchro signal input at components pins 64 and 65 of IC 2201 ?
No sound comes out
4. No sound (1 / 2)
No sound comes out at UHF/VHF reception?
No external input sound scart 1 and Ext 3 comes out NO Check IC1001 and peripheral circuits
Is the output signal pin 123 SPL and pin 124 SPR of IC1001 as specified?
NO Check IC 1351 and peripheral circuits NO Check J 402
NO Check IC 1301 and peripheral circuits
Is the LI1 audio signal inputted from pin (6) of input terminal SC1451 to pin 114 of IC1001? Is the RI1 audio signal inputted from pin (2) of input terminal SC1451 to pin 114 of IC1001? Is the LI2 audio signal inputted from J401 connector to pin 116 of IC 1001 ? Is the RI2 audio signal inputted from J401 connector to pin 115 of IC 1001 ? YES
25
YES
YES Is the output signal pin 1 and pin 7 of IC1351 as specified? YES Is the input signal pin 11 and pin 15 of IC1301 as specified? YES Is the output signal pin 26 and pin 27 of IC1301 as specified? YES Check speakers
No external input sound scart 2 and Ex 5 comes out
No external input sound Ex 4 comes out
Is the inputted signal from J1901 to input terminals 4 and 11 of IC1401? NO
Check Components Unit Board and peripheral parts
Is the L audio signal inputted from pin (6) of input terminal SC1452 to pin 15 of IC401? Is the L1 audio signal inputted from pin (2) of input terminal SC1452 to pin 2 of IC1401? Is the L audio signal inputted from J402 connector to pin 12 of IC 1401 ? Is the R audio signal inputted from J402 connector to pin 1 of IC 1401 ? YES Check IC1401 and NO Is the output signal pin 3 and pin 13 of IC1401 peripheral circuits as specified? YES Is the input signal pin 117 RI3 and pin 118 LI3 of IC1001 as specified?
LC-26GA5E LC-26GA5E LC-32GA5E LC-32GA5E
YES
LC-26GA5E LC-32GA5E
No sound comes out No external output sound scart 2 comes out No Are audio output terminal of connector Sc1452 as specified ? Yes Are audio output terminal of IC 1402 pins 1 and 7 as specified? Yes Are audio output terminal of IC 1001 out R(119) and out L (120) as specified ? No Check IC 1001 and peripheral circuits No Check IC1402 and peripheral components Are audio output terminal of No Check signal 2S-mute connector J 401 as specified ? and SS mute and Yes peripherical circuit No external output sound Ext 3 comes out
5. No sound (2 / 2)
No external output sound scart 1 comes out
Are audio output terminal of connector SC1451 pins (1) and (3) as specified? Yes Are audio output pins 122 and 121 of IC1001 as specified ?
No Check signal 2S-mute and SS mute and peripheral circuit
No Check IC 1001 and peripheral circuits
26
No sound comes out in radio reception Switch pin 6 of IC1201 from 0,5 V in TV mode to 5V in radio mode? Yes Check IC 1201 and peripherical circuits No Check Q1203, Q1202, D1205 and peripherical components
LC-26GA5E LC-26GA5E LC-32GA5E LC-32GA5E
CHASSIS LAYOUT
Main Unit Layout QPWBXC656WJN1
P2205 SC2801 IC2801 P2206 SC2201
I
IC1801
IC2202 X2201 IC2201
IC2210
H
IC2207
IC1351
J402
IC2203 P2203 IC6004 IC2206
G
IC2205 IC2212
P2204
IC1003 J401
F
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P1004
IC1002
IC1008 IC1006
IC1001
IC1403
E
P1005
SF1201
IC1404
SC1451
IC1004
D
TU1201
Q1202
P1001
P2201
IC1302
IC1401
IC1402
IC704
C
IC1301
P1002
P1003 P1401
IC1405
P1402 P1301
B
IC2204
P1403
SC1452
A
1
2
3
4
5
6
P1006
7
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Operation Unit Layout QPWBXC864WJN1
SW4054
SW4052
SW4055
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VOL +
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H
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RMC4001
P4001
SW4053
SW4051
IC4002
IC4001
F
LCD Control Unit Layout QPWBXC919WJN2
E
SC4651 LUG7707 SC4652 LUG7708 LUG7709 IC4108 IC4903
IC4102
IC4003
D4001
D4002
D4003
IC7703
IC4901
IC4101 IC4107
LUG7710
IC2019 IC4109 IC4501 IC4602 IC4603 IC7711
P7704
D
IC2010 IC2004
IC7702 IC7706
IC4114 IC2008 IC4601 IC2017 IC4116 IC7709
IC2015
IC2014
IC4902
Q4110 IC7704
IC7701
P7705 IC7708
IC2006 IC2016 LUG7714 SC4601 LUG7711 LUG7712 P2006 IC2001 LUG7713 P2001 P2004 P2005 P7707
C
YUV Unit Layout QPWBXC920WJN1
P1902
B
J1901
P1901
A
1
2
3
4
5
6
7
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BLOCK DIAGRAMS
Block Diagram
I
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1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
29
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BLOCK DIAGRAMS
Power Block Diagram
I
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E
D
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B
A
1
2
3
4
5
6
7
8
9
10
11
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BLOCK DIAGRAMS
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A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
31
LC-26GA5E LC-32GA5E
Detailed Mother Unit Block Diagram 2/2
72 $8',2 %/2&. <$ 72 $8',2 %/2&. <% 72 3&/' 08/7 72 3,;(/ %/2&. 5;'' 72 3,;(/ %/2&. 3 <89 / 72 3,;(/ %/2&. 3 <89 5 72 781(5 %/2&. 6&/ 72 9&7 %/2&. 67%< 72 3&/' 6&$57 72 3,;(/ %/2&. 7;''
3 <89
I
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555 %%% ***
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287 /
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635
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72 $8',2 %/2&. 6&5 72 $8',2 %/2&. 6&/ / / .(<
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72 3,;(/ %/2&.
A
1
2
3
4
5
6
7
8
9
10
72 &3/' 5(6(7
72 &3/' <89
; 287
72 3,;(/ %/2&.
11
12
13
14
15
16
32
LC-26GA5E LC-32GA5E
OVERALL WIRING DIAGRAMS
LC-26GA5E Overall Wiring Diagram
I
30 29 39 38 37 36 35 47 46 45 44 49 48 43 69 68 67 66 65 61 60 59 76 75 74 80 79 78 77 71 70 73 72 62 52 51 50 57 56 55 64 54 63 58 53 42 41 40 33 32 31 34 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4
TO PANEL
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
3
2
1
LBR REV POL VCC3V VCC3V SPIO SPOI
VL63 VL95 VL127 VL191 VL255 VLS
GND VLS VLS VH255 VH191 VH127 VH95 VH63
SC4651 NA222WJ
GND VGL VGL VGH VGH GSP2 GSP1 GCK VL0 VL1 VL20 VL47
SC4652 NA222WJ
VH47 VH20 VH1 VH0 GND
VLS GND B3P B3N B2P B2N B1P B1N
B0P B0N
GND G3P G3N G2P G2N G1P G1N G0P G0N GND
GND CKP CKN GND LS GND
R3P R3N R2P R2N
VH20 VH1
VH63 VH47
VH0
VH255 VH191
VH127
VH95
GND
GOE U/D CS2 CS2 CS1
G1P G1N G0P G0N GND
POL
SPIO
VL255 VLS
VL127 VL191
VCC3V VCC3V
VL20
GSP2 GSP1 GCK
VL47
VL63 VL95
SPOI
CS2 CS1 DS1 COM COM
GND G3P
B1P B1N B0P
VL0
G3N
VL1
B0N
GOE U/D
B3P
VGH
VGL VGH
VLS
GND
VGL
GND
B3N B2P
CS2
B2N
G2P
G2N
GND
CKP CKN GND
LBR
REV
GND R3P
R3N R2P R2N
R1P R1N R0P R0N
GND VLS VLS
DS1 COM COM
R1P R1N R0P R0N
LS
CN7503 CN7602 P7704 NA177WJ
1 2
LV1 LV1 CN7601 OS TEMP GND REG1 IS1-1 1 2 3 4 1 OS TEMP 2 GND 3 REG1 4 IS1-1 5 6 7 8
HV HV
1 2
H
(GV) QCNWD045WJQZ
LCD CONTROL (QPWXC919WJN2) DUNKTC919FE01
P7705 NA181WJ BL CN7603 SH P2006 NA178WJ P2001 N0544FJ AD ADJUST P2005
GND STB OFL1 OFL2 INV OSC INV ERR REG1 IS1-1 IS1-2 REG2 IS2-1 IS2-2
P7707 NA177WJ
CN7504
HV HV
1 2
1 GND 2 FAN-ERR 3 FAN VCC
GND GND RTD2+ RTD2GND RTCLK2+ RTCLK2GND RTC2+ RTC2GND RTB2+ RTB2GND RTA2+ RTA2GND
GND RTCLK1+ RTCLK1GND 24 RTC1+ 25 RTC1GND 26 27 RTB1+ 28 RTB1GND 29 30 RTA1+ 31 RTA1GND 32 GND 33
SCL1 CONNECT
RTD1+ RTD1-
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
(LV) QCNW-D050WJQZ
CN7604
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 33 32 31
1 2 3 4 5 6 7
P7706 FA N0175FJ
10 11 12
SC4601 N0491FJ
RXDC 8 TXDC 9 OPC
G
GND SDA1
MRDY SRST
1 2 3 4 5 6 7 8 9
(SH) QCNW-D049WJQZ (PO/BL) QCNW-D041WJQZ
CN7505 P2206 NA047WJ
9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
GND 13V
GND TCLK2+ TCLK2GND TC2+ TC2-
TCLK1+
TCLK1-
N0491FJ
TD2+ TD2GND GND
INV OSC INVERSOR REG-1 ISI-1
STB OFL1 NC
6V GND GND NC GND
4V GND
1 2
LV LV
SC2201
9 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8
GND 13V GND 6V GND GND 4V 4V
LV
1 +3.3V 2 EEROM_CS 3 EEROM_CK 4 EEROM_DA 5 EEROM_SW 6 EEROM_SO 7 EEROM_WP 8 SCLK1 9 SDA1 10 MRDY 11 GND 12 TXDC 13 RXDC 14 B5V 15 BUSY 16 SCLK 17 SUB_DIN 18 SUB_DOUT 19 CNVSS 20 RESET
7 RXD1_M 6 TXD1_M 5 FLASH_W 4 SRST 3 GND 2 N.C 1 BU5V_OUT
1 2
LV
EXT 4
J1901 JA070WJ
HV HV
1 2
OSD2 RXDD
TD1-
GND TB2+
TA2+ TA2-
GND TD1+
TC1GND
TB1+
TB1GND
TB2GND
GND TC1+
TA1+ TA1GND GND
GND Y-YUV
7 8 4 5 6 1 2 3
1 2 3 4 5 6 7
GROUND BACK LIGHT
PB
INVERTER GROUND RUNTKA095WJZZ
PR L
Y
R
GND U-YUV GND V-YUV +8V P1902
(UV) QCNWD295WJPZ
P1401 1 GND 2 Y 3 GND 4 U 5 GND 6 V 7 +8V
CN704
INVERTER RUNTKA094WJZZ
F
OSD1
TXDD
GND
GND SDA SCL
GND
CN7605
1 2
LV LV
E
COMPONENTS (QPWXC920WJN1) DUNTK920WE01
P1901 V_YUV GND U_YUV GND Y_YUV GND R_YUV GND L_YUV GND
1 2 3 4 5 6 7 8 9 10
(YU) QCNWD044WJPZ
1 2 3 4 5 6 7 8 9 10
V_YUV GND U_YUV GND Y_YUV GND R_YUV GND L_YUV GND P2205
CN7506 P1003 +12VS GNDA +12VS GNDS GNDS GNDA +36V +12V +5V CN706 1 +12VS 2 GNDA 3 +12VS 4 GNDS 5 GNDS 6 GNDA 7 +36V 8 +12V 9 +5V 10 GNDA 11 +3.3VSTBY 12 +3.3VSTBY 13 GNDA CN703 CN7501 HV HV Vin Vin Vin Vin Vin Vin Vin Vin Vin Vin Vin Vin 1 2
1 2 3 4 5 6 7 8 9
(PA)
1 2 3 4 5 6 7 8 9 10 11 12
CN7606
R/C LED (QPWXC865WJN1) DUNTK865WE03
GNDA 10 +3.3VSTBY 11 +3.3VSTBY 12 GNDA 13 P4001 +3.3STBY OPC IR OSDCK OSDD SWITCH GND N0780GE 1 2 3 4 5 6 7 P1001 1 3.3V STBY 2 OPC IR 3 4 OSDCK 5 6 7 OSDD SWITCH GND N0778GE
(RA) QCNWD042WJQZ
QCNW
CN7507
1 2
LV LV
D047 WJQZ MAIN
P2201
CN708 1 2 3 4 5 6 7 8 9 10 11 12 GND GND GND GND GND GND GND GND GND GND GND OVP
CN7502
HV HV
1 2
D
(QPWBXC656WJN1) DUNTKC656WE03 OPERATION (QPWXC864WJN1) DUNTK864WE03
N0541CE LAMP ERR OFL1 OFL2 STBY GND
1 2 3 4 5
1 2
CN707 LAMP ERR OFL1 OFL2 STBY GND
(DP)
3 4 5
P4050 RESET KEY1 KEY2 GND N0480GE 1 2 3 4
(KE) QCNWD046WJQZ
1 2 3 4 5 6
P1006 OSD2 TX RESET KEY1 KEY2 GND N0678GE JTAG2 P1004 N0720RE 1 2 3 4 5 6 7
POWER RDENCA101WJZZ
CN7508
CN7607
HV HV
1 2
C
1 2
LV LV P1301 SP L2 SP L1 SP R2 SP R1 N0441CE SP
TMSCP TDICP TD0CP TCKCP NC GND +3.3V STBY
SP-BOX RSP-ZA096WJZZ L
B R
1 2 3 4
(SP) QCNW-D043WJQZ SP-BOX RSP-ZA096WJZZ R
CN7608
B R
VGAR
1
SERV P1002 CM2645SC
16 6
TXDD
GND
11
7
GND
12
RXDD GNDD SDA VGAH VGAV
VIDEO IN VIDEO OUT
1 2 3 4 5 6
CN7509
B
1 2
LV LV
PC INPUT
VGAG VGAB GND GND
2 8 3 9 4 10 5 17
SCL SDA RESET
GND
13
HV HV
1 2
GND
14
GND
15
SCL
L IN L OUT
R IN R OUT
SC2801 NA353WJ
10
3
2
1
6
5
4
9
8
7
11
20
18
16
14
12
10
8
6
4
2
20
18
16
14
12
10
8
6
4
2
VOUT
AVLINK
SLOW
SLOW
Y GND J402 JA011WJ
CR GND
21 19 17
LOUT
ROUT
6
8
7
1
5
4
3
2
VOUT
R
G
B
1
21
AUDIO IN PC
HEAD PHONES
J401 GA069WJ
J404 DA030WJ
SC1451 ZA056WJ
SC1452 ZA056WJ
EXT 3
EXT 3 S-VIDEO
( EXT 1 )
( EXT 2 )
2
15
13
11
9
7
5
3
1
CR
19
17
15
13
11
9
7
5
LOUT
3
1
ROUT
P1706
LIN
RIN
FB
VIN
VIN
LIN
RIN
A
AC CORD QACCKA007WJPZ(E/F/I) QACCKA021WJPZ(K)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
BACK LIGHT
16
33
LC-26GA5E LC-32GA5E
OVERALL WIRING DIAGRAMS
LC-32GA5E Overall Wiring Diagram
I
30 47 46 49 48 43 70 69 68 67 66 65 77 76 75 74 73 80 79 78 72 71 61 60 59 58 57 56 55 64 63 62 54 53 52 51 50 42 37 36 45 40 44 39 38 41 33 32 31 35 34 29 28 27 26 23 22 25 24 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 5 6 4
SC4651 NA222WJ
TO PANEL
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
SC4652 NA222WJ
3
2
1
LBR REV POL VCC3V VCC3V SPIO SPOI
VL63 VL95 VL127 VL191 VL255 VLS
GND VLS VLS VH255 VH191 VH127 VH95 VH63
GND VGL VGL VGH VGH GSP2 GSP1 GCK
VL0 VL1 VL20 VL47
VH47
VH20 VH1
VH127 VH95 VH63
VH255 VH191
VCC3V VCC3V
SPIO SPOI
VL127 VL191 VL255 VLS
VL20
VL47
CN7602
P7704 NA177WJ
1 2
LV LV CN7601 TEMP GND REG IS1 1 2 3 4 1 OS TEMP 2 GND 3 REG1 4 IS1-1 5 6 7 8
H
GSP2 GSP1 GCK
VL63 VL95
VH47 VH20 VH1 VH0 GND
VLS GND B3P B3N B2P B2N B1P B1N
B0P B0N
GND G3P G3N G2P G2N G1P G1N G0P G0N GND
GND CKP CKN GND LS GND
R3P R3N R2P R2N
VH0
GND
GOE U/D CS2 CS2 CS1
CKN GND LS
GND G3P
B1P B1N B0P
G3N
B0N
G2N
G1P G1N
CS2 CS2 CS1 DS1 COM COM
VL0
GND
VGL VGL
VGH VGH
GOE U/D
VL1
VLS
GND B3P B3N B2P
G0P G0N
B2N
G2P
GND
REV POL
GND CKP
LBR
GND
R3P R3N R2P R2N
R1P
R1N R0P R0N GND
VLS VLS
DS1 COM COM
R1P R1N R0P R0N
CN7504
(GV) QCNWD060WJQZ
LCD CONTROL (QPWXC919WJN2) DUNKTC919FE02
HV HV 1 2
CN7603 SH P2006 NA178WJ
P7705 NA181WJ BL P2001 N0544FJ AD ADJUST P2005
P7707 NA177WJ
1 +3.3V 2 EEROM_CS 3 EEROM_CK 4 EEROM_DA 5 EEROM_SW 6 EEROM_SO 7 EEROM_WP 8 SCLK1 9 SDA1 10 MRDY 11 GND 12 TXDC 13 RXDC 14 B5V 15 BUSY 16 SCLK 17 SUB_DIN 18 SUB_DOUT 19 CNVSS 20 RESET
7 RXD1_M 6 TXD1_M 5 FLASH_W 4 SRST 3 GND 2 N.C 1 BU5V_OUT
GND STB OFL1 OFL2 INV OSC INV ERR REG1 IS1-1 IS1-2 REG2 IS2-1 IS2-2
1 2
LV LV
1 GND 2 FAN-ERR 3 FAN VCC
GND GND RTD2+ RTD2GND RTCLK2+ RTCLK2GND RTC2+ RTC2GND RTB2+ RTB2GND RTA2+ RTA2GND
RTD1+ RTD1-
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
1 2 3 4 5 6 7
P7706 FA N0175FJ
10 11 12
SC4601 N0491FJ
RXDC 8 TXDC 9 OPC
GND SDA1
MRDY SRST
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8
G
GND RTCLK1+ RTCLK1GND 24 RTC1+ 25 RTC1GND 26 27 RTB1+ 28 RTB1GND 29 30 RTA1+ 31 RTA1GND 32 GND 33
SCL1 CONNECT
GND 13V GND 6V GND GND 4V 4V
CN7505
HV HV
1 2
(LV) QCNW-D064WJQZ
CN7604 1 2 LV LV
(SH) QCNW-D063WJQZ (PO/BL) QCNW-D249WJQZ
9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8
GND TCLK2+ TCLK2GND TC2+ TC2-
TCLK1+
TCLK1-
OSD2 RXDD
TD2+
TD1-
TD2-
GND TB2+
TA2+ TA2-
GND TD1+
TC1GND
TB1+
TB1GND
TB2GND
GND TC1+
TA1+ TA1GND GND
OSD1
TXDD
GND GND
GND
GND SDA SCL
GND
GND 13V
N0491FJ J1901 JA070WJ
INV OSC INVERSOR REG-1 ISI-1
STB OFL1 NC
6V GND GND NC GND
4V GND
EXT 4
SC2201
P2206 NA047WJ
INVERTER RUNTKA096WJZZ
30 29
28 27 26 25 24 23 22 21 20 19 18 17 16 15
14 13 12 11 10
1 2
3 4
33 32 31
9 8 7 6 5 4 3 2 1
5 6 7 8
CN7506
F
7 8 4 5 6 1 2 3
HV HV 1 2 3 4 5 6 7 8 9 10 11 12 Vin Vin Vin Vin Vin Vin Vin Vin Vin Vin Vin Vin CN7501
1 2
GND Y-YUV
1 2 3 4 5 6 7
GROUND BACK LIGHT
PB
PR
Y
R
INVERTER GROUND RUNTKA098WJZZ
L
GND U-YUV GND V-YUV +8V P1902
(UV) QCNWD295WJPZ
1 2 3 4 5 6
P1401 GND Y GND U GND V
CN704
CN7605
1 2
LV LV
7 +8V
E
COMPONENTS (QPWXC920WJN1) DUNTK920WE01
P1901 V_YUV GND U_YUV GND Y_YUV GND R_YUV GND L_YUV GND
1 2 3 4 5 6 7 8 9 10
(YU) QCNWD044WJPZ
1 2 3 4 5 6 7 8 9 10
V_YUV GND U_YUV GND Y_YUV GND R_YUV GND L_YUV GND P2205
CN703 P1003 +12VS GNDA +12VS GNDS GNDS GNDA +36V +12V +5V CN706 1 +12VS 2 GNDA 3 +12VS
1 2 3 4 5 6 7 8 9
CN7507 1 2 3 4 5 6 7 8 9 10 11 12 CN708 GND GND GND GND GND GND GND GND GND GND GND OVP CN7502 CN7503
(PA)
4 GNDS 5 GNDS 6 GNDA 7 +36V 8 +12V 9 +5V 10 GNDA 11 +3.3VSTBY 12 +3.3VSTBY 13 GNDA
HV HV
1 2
CN7606
1 2
LV LV
R/C LED (QPWXC865WJN1) DUNTK865WE08
P4001 +3.3STBY OPC IR OSDCK OSDD SWITCH GND 1 2 3 4 5 6 7
(RA) QCNWD058WJQZ
D
CN7607 1 2 LV LV
N0780GE
N0778GE
MAIN
P2201
(QPWBXC656WJN1) DUNTKC656WE08 OPERATION (QPWXC864WJN1) DUNTK864WE08
N0541CE LAMP ERR OFL1 OFL2 STBY GND
1 2 3 4 5
(DP)
1 2 3 4 5
CN707 LAMP ERR OFL1 OFL2 STBY GND
CN7401
CN7402
10 11 12
1 2
3 4 5 6 7 8 9
5 6 7
OSDD SWITCH GND
Vin Vin Vin Vin Vin NC GND GND GND GND GND OVP
P1001 1 3.3V STBY OPC 2 IR 3 OSDCK 4
QCNW D061 WJQZ
HV HV
1 2
P4050 RESET KEY1 KEY2 GND N0480GE
1 2 3 4
(KE) QCNWD046WJQZ
1 2 3 4 5 6
P1006 OSD2 TX RESET KEY1 KEY2 GND N0678GE JTAG2 P1004 N0720RE
POWER RDENCA102WJZZ
CN7403
INVERTER RUNTKA097WJZZ
CN7608
C
1 2
LV LV
P1301 1 SP L2
SP
TMSCP TDICP TD0CP TCKCP NC GND +3.3V STBY
1 2 3 4 5 6 7
HV HV
1 2
SP-BOX RSP-ZA096WJZZ L
B R
2 3 4
SP L1 SP R2 SP R1 N0441CE
(SP) QCNW-D043WJQZ SP-BOX RSP-ZA096WJZZ R
CN7609
B R
VGAR VGAG
1 2
SERV P1002 CM2645SC
16 6
CN7404
HV HV
1 2
TXDD
GND
11
7
GND
12
RXDD GNDD SDA VGAH VGAV SCL SCL SDA RESET
1 2 3 4 5 6
1 2
LV LV
8
GND
13
PC INPUT
VGAB GND
3 9 4 10
GND
14
GND
15
L IN L OUT
SC2801 NA353WJ
R IN R OUT
B
GND
5 17
VIDEO IN VIDEO OUT
CN7405
HV HV
11 20 18 16 14 12 10 8 6 4 2 20 18 16 14 12 10 8 6 4 2
1 2
10
VOUT
AVLINK
SLOW
SLOW
Y GND J402 JA011WJ J401 GA069WJ J404 DA030WJ
CR GND
21 19 17
LOUT
ROUT
6
8
7
1
5
4
3
2
VOUT
R
G
B
1
21
SC1451 ZA056WJ
SC1452 ZA056WJ
AUDIO IN PC
HEAD PHONES
EXT 3
EXT 3 S-VIDEO
( EXT 1 )
( EXT 2 )
2
15
13
11
9
7
5
CR
3
1
19
17
15
13
11
9
7
5
LOUT
3
1
ROUT
P1706
3
2
1
6
5
4
9
8
7
LIN
RIN
FB
VIN
VIN
LIN
RIN
AC CORD QACCKA007WJPZ(E/F/I) QACCKA021WJPZ(K)
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
BACK LIGHT
GNDA 10 +3.3VSTBY 11 +3.3VSTBY 12 GNDA 13
16
34
LC-26GA5E LC-32GA5E
SCHEMATIC DIAGRAMS
Description:
VOLTAGE MEASUREMENT CONDITION: 1. The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 230V. Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester. INDICATION OF RESISTOR & CAPACITOR: RESISTOR 1. The unit of resistance " " is omitted. (K=k=1000 , M=M). 2. All resistors are ± 5%, unless otherwise noted. (J= ± 5%, F= ± 1%, D= ± 0.5%) 3. All resistors are 1/16W, unless otherwise noted. 4. All resistors are Carbon type, unless otherwise noted. C : Solid W : Cement S : Oxide Film T : Special N : Metal Coating CAPACITOR 1. All capacitors are µF, unless otherwise noted. (P=pF=µµ F). 2. All capacitors are 50V, unless otherwise noted. 3. All capacitors are Ceramic type, unless otherwise noted. (ML): Mylar (TA): Tantalum (PF): Polypro Film (ST): Styrol CAUTION:
This circuit diagram is original one, therefore there may be a slight difference from yours.
IMPORTANT SAFETY NOTICE:
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.
35
LC-26GA5E LC-32GA5E
SCHEMATIC DIAGRAMS
Main Unit Diagram 1/6 (VCT / FRC)
I
LC26GA5EE, LC32GA5EE, LC37GA5EE DUNTKC656 (WE03,08,14) (WE*C*H*N)
TO AUDIO SPR SPR SPL SPL P1002 +3.3V SERV TXDD RXDD GNDD SCL C705 TL1021 C706 0.1u CYF C1062 0.22u R1801 820 CYF L1601 10uH CGM C1604 +5V C1601 100u 16V APF R1601 G RXDD TXDD +3.3V S 100u 16V APF C1603 0.1u L1602 10uH CGM R705 10K CY D1801 HSU119 D1802 HSU119
C3928AR Q1801 VS2
R1802 22 CY C1834 C1805 1000P CYB 1000u 6.3V CGM L1807 100uH OUTR +5V
1 2 3 4
3 2 1 2.2u 50V APF
+8V +5V OUTL OUTL OUTR R1817 220 CY C1806 1000P CYB +12VS R1805 33 CY GNDS GNDS
H
SDA RESET
5
Q702 TXA014WJ
D
IC704
6
RESET
R1803 33 CY C1804 1000P CYB
NJ78L08U
R1816 220 CY
R1804 33 CY
1K CY
C1602 0.1u
R1815 220 CY *JF1013 0
TO SCALER
*Q1804
+5V
+3.3V +5V
*Q1802 *Q1803
CYF AD4 AD5 AD6 AD7 FRV FRH WR AD8 AD19 AD12 AD15 AD16 AD18 AD17 AD14 AD13 AD9 AD11 WRQ RDQ
CYF OUTVR
+3.3VSTBY
OUTVR C1808 4.7u 25V APF R1828 220 OUTVG R1806 270 CY OUTVB R1807 270 CY OUTVG R1808 270 CY OUTVR OUTVG OUTVB OUTVB VVH JF2 VVV 0 CY TO RGB/VGA/FI +5V +5V
R1809
TO XILINX
C1001 100u 16V APF
C1061 0.1u CYF 1
E0 E1 E2 VSS
VCC /WC SCL SDA
8
TL1019 R1004 3.3K CY TL1020 R1005
JF13
*IC1003
1K CY
JF14
2
7
+3.3VSTBY +1.8VSTBY KEY2 KEY2 KEY1 KEY1 IR *R1003 1.5K CY *R1002 1.5K C1002 CY 0.1u CYF
C1807 0.1u 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 ADB4 ADB12 ADB19 ADB5 ADB6 RST ADB15 OCF ADB16 /STOPQ /ENEQ ADB18 ADB17 ADB7 /PSWEQ ADB11 ALE WRQ HFLB SAFETY ADB14 RDQ ADB8 ADB13 ADB9 VPROT HOUT GNDDAC 8 VSUP3.3DAC 7 VSUP3.3IO 6 GND 5 GND 4 VSUP3.3BE 3 XREF 2 VRD 1 BOUT CYF C1839 0.1u
3
4
5
6
R1829 220
GND
3.3K CY
G
IR FER_RESET FER_RESET RESET D0 D1 D2 D3 D4 D5
KEY1 SDA SCL C1003 0.1u CYF
IXA757WJN1
R1006 100 CY R1007 100 CY
37 38 39 40 41 42 43
PWMV DFVBL SDA SCL P21 P20 P17 P16 P15 P14 P13 P12 P11 P10 /XROMQ /EXTIFQ VSUP3.3FE GND
GOUT ROUT SVM B2IN G2IN R2IN FB2IN GNDM SENSE RSW1 RSW2 EW VV+ TST VSUP5.0BE GND
144
+12V JF11 +12V C1824 0 C1826 0 C1828 0 D1803 HSU119 VHD R1811 270 CY R1813 22K CY R1501 6.8K CY C1501 0.068u CYB FRB FRG FRR +3.3V RO1 RO1 LO1 LO1 +3.3VSTBY R1812 2.2K CY +5V R1502 6.8K CY C1502 0.047u CYB C1809 0.1u CYF C1301 0.1u CYF C1303 0.1u CYF C1304 3.3u 50V ASN GNDS LO1 C1308 1000P CYB C1307 1000P CYB +36V +36V +8V 0
143 142 141 140 139 138 137 136
TXD KEY2 SLOW2
JF1010 0
SLOW1 IR
C1004 0.1u CYF
44 45 46 47 P12 48
R1810 1.2K CY
135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115
RXD D6 TL1038 D7 AD0 AD1 AD19 WRQ RDQ L1002 10uH CGM VIN 58 59 FRONTAV C1835 0.1u C1814 0.1u C1822 0.01u CYF 60 61 SVHSV TO SCALER SVHSCR C1816 0.1u CYF 62 C1815 0.01u P21 P12 VIN1 RESET_N FER_RESET R R1008 10K C1023 0.1u RXDD RXDD *R1838 75 TQ TXDD TXDD STANDBY SDA SDA SCL SCL 100 *R1839 75 TQ G 69 B VSUP3.3EIO 70 FB R1814 71 72 FB1 656IO7 656IO6 656IO5 656IO4 656IO3 GNDEIO B1IN VSUP5.0IF C1817 0.1u 67 68 VIN2 CYF 63 64 65 66 VIN4 VIN5 VIN6 VIN7 R1IN G1IN VIN3 VIN1 VIN2 VOUT2 VOUT1 L1001 10uH CGM C1005 100u 16V APF C1006 0.1u CYF C1008 0.1u CYF 49 50 51 52 53 54 55 56 57
C1810 100u 16V APF
IXB058WJ
GND VSUP1.8FE VOUT3
GND VSUP8.0AU
C1302 100u 16V APF
R1301 22 TQ
+8V
C1007 100u 16V
APF
IC1001
VREFAU SPL SPR AOUT1L AOUT1R AOUT2L AOUT2R AIN3L AIN3R AIN2L AIN2R AIN1L AIN1R TAGC VREFIF VSUP3.3D
F
SPL
SPR
R1302 1K CY R1303
C1305 6800P CYB C1306 6800P CYB
RO1
OUTL OUTR D1305 1259CE RHEX
114 113
1K CY C1203 0.1u
112 111 110
LI3 RI3 JF1 0 CY
656CLKIO
VSUP1.8D
IFGNDIF IF+ /RES
/PESENQ
D1306
109
656VIO
656IO1
656IO2
656IO0
656HIO
CKZ
C1325 LI2 2.2u C1326 RI2 2.2u LI1
ADB10
XTAL2
XTAL1
ADB3
ADB2
ADB1
ADB0
DB5
DB0
DB3
DB1
DB2
DB4
DB6
DB7
GND
GND
P23
P22
L1003 10uH CGM C1009 100u 16V APF C1010 0.1u CYF
L1203 10uH CGM
1259CE RHEX CKZ
73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108
D1303 1259CE RHEX
RI1
*R1837
E
TO RGB/VGA/FI P10 VOUT1 VIN6 B ITU7 ITU6 ITU5 ITU4 B G G R R IR KEY2 FB SLOW1 SCL IR KEY2 FB SLOW1 SCL
144 143 142 141 140 139 138 137 136
C1210 0.1u CYF 22
R1201 6.8K CY
D1304 1259CE RHEX
FRB FRG FRR
C1015 0.1u CYF
APF C1017 C1209 100u 16V
*X1001
C1013 22P
C1014
4
2
22P
0.1u CYF C1016 100u C1018 100u
C1021 0.22u CYF R1016 100 CY TAGC TO RGB/VGA/FI
*R1823 22
*R1824 22 R1018 22 3 1 ITUCLK ITU3 ITU2 ITU1 ITU0 AD10
C1201 0.1u 16V APF L1005 10uH CGM C1202 100u 16V APF L1201 10uH CGM R1036 3.3K CY TL1023 RESET C1019 10u 50V APF IF+
FB1001 0065CE AD3 AD2 AD1 AD0 D0 D1 D2 D3 D4 D5 D6 D7
ITUV
ITUH
16V APF
TAGC STANDBY PSEN IFIF-
+3.3VSTBY C6110 0.1u
L1004 10uH CGM
*IC1004
LI1
IF+
C6108 0.1u
C6109 0.1u
C6111 0.1u
C6131 0.1u CYF R1034 100
LI1 RI1 RI1
FRB
FRG
FRR
SFI
LI2 LI2 RI2 RI2
UVIN1
VDDD61
VSSD60
UVIN0
UVIN4
UVIN3
UVIN2
VSSD61
UVIN6
VDDD60
VDDP9
UVIN7
UVIN5
VDD8M
TCLK
TDI
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
TDO
VSSP9
TMS
VDDP7
SLOW2 TXD RXD SVHSV FRONTAV SVHSCR VIN VIN2 VIN1 VIN3 SFI SFI
VSSP7
YIN0
NC
NC
TXD 1 RXD SVHSV FRONTAV ITU2 SVHSCR VIN VIN2 VIN1 VIN3 ITUH ITU5 ITU6 ITU7 ITUCLK L6009 10uH CGM C6122 10u ITUV ITU3 ITU4 C6132 0.1u 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 VSSP0 HIN YIN5 YIN6 YIN7 CLKIN NC NC AVI ITU0 ITU1 NC NC YIN1 YIN2 VIN YIN3 YIN4 VDDP0
A15 A14 A13 A12 A11 A10 A9 A8 NC NC /W /RP NC NC /RB NC A17 A7 A6 A5 A4 A3 A2 A1
A16
48
D
135
134
133
132
131
130
129
128
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
SDA
SDA SLOW2
109
L6010 10uH CGM
R1035 680 *JF1001 0 1
1
AD16 AD15
AD17 FRH FRV LI3 LI3 RI3 RI3 AD0 D7 TL1035 TL1034 TL1033 TL1032 TL1031 TL1030 TL1029 TL1028 TL1027 TL1026 PW D6
73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108
NC NC S