Sharp lc26ga3e schematic

LC-26GA3E

SERVICE MANUAL

S94Z7LC26GA3E

LCD COLOUR TELEVISION

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.

CONTENTS

» IMPORTANT SERVICE SAFETY PRECAUTION .......................................................................................2

» SPECIFICATIONS ......................................................................................................................................4

» OPERATION MANUAL ...............................................................................................................................5

» DIMENSIONS ...........................................................................................................................................12

» REMOVING OF MAJOR PARTS ..............................................................................................................13

» ADJUSTMENT PROCEDURE..................................................................................................................17

» TROUBLESHOOTING TABLE..................................................................................................................34

» OVERALL WIRING DIAGRAM .................................................................................................................46

» SYSTEM BLOCK DIAGRAM ....................................................................................................................48

» AV BLOCK DIAGRAM ..............................................................................................................................50

» MAIN BLOCK DIAGRAM..........................................................................................................................52

» CPU BLOCK DIAGRAM ...........................................................................................................................54

» DISPLAY BLOCK DIAGRAM ....................................................................................................................56

» POWER BLOCK DIAGRAM .....................................................................................................................58

» PRINTED WIRING BOARD ASSEMBLIES..............................................................................................60

» PARTS LIST..............................................................................................................................................94

» PACKING OF THE SET......................................................................................................................... 132

» SCHEMATIC DIAGRAM .................................................................................................................. D1-D79

LC-26GA3E

Page

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LC-26GA3E

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.

CAUTION: FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE REPLACE ONLY WITH SAME TYPE FUSE. F701 (3.15A, 250V), F702 (3.15A, 250V), F703 (2A, 250V), F705 (1A, DC450V), F706 (5A, 250V), F707 (5A, 250V)

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 220~240 volt A C outlet. » 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 A C v oltage 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 0.75 Vrms (this corresponds to 0.5 mA rms 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 µF

TEST PROBE

TO EXPOSED METAL PARTS

CONNECT TO KNOWN EARTH GROUND

234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121

SAFETY NOTICE

Many electrical and mechanical parts in LCD color 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

and shaded areas in the

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.

components having such features are identified b y " å"

234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121

Replacement Parts List

and

LC-26GA3E

Precautions for using lead-free solder

1 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. Example:

L Fa

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 ser vice 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, remov e 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 allo y ed 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

Part No, ★ Description Code ZHNDAi123250E J φ0.3mm 250g(1roll) BL ZHNDAi126500E J φ0.6mm 500g(1roll) BK ZHNDAi12801KE J φ1.0mm 1kg(1roll) BM

LC-26GA3E

SPECIFICATIONS

Specifications are subject to change without prior notice.

OPERATION MANUAL

LC-26GA3E

Part name

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Using external equipment

Part name

LC-26GA3E

Using external equipment Using external equipment

LC-26GA3E

Using external equipment Using external equipment

LC-26GA3E

Using external equipment Appendix

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Appendix Appendix

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Appendix Appendix

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DIMENSIONS

REMOVING OF MAJOR PARTS

1. Remove the Terminal Covers 1 .

2. Remove the 4 lock screws 2 and detach the Stand.

3. Remove the 4 lock screws 3 and detach the bracket cover.

4. Remove the 4 lock screws 4 and separate the Speaker Box from the set. Disconnect the SP Wire (R) and SP Wire (L).

5. Remove the 15 lock screws 5 from the Rear Cabinet, and detach the Rear Cabinet.

6. Remove the 4 lock screws 6 from the Center Angle, and detach the Center Angle.

7. Remove the Key PWB. 7-1. Remove the 2 lock screws 7 from the Top Cover. 7-2. Remove the 2 lock screws 8 from the Key PWB.

8. Remove the 1 lock screw 9 from the Frame Cover, and detach the Frame Cover.

9. Disconnect all the connectors from all the PWBs.

Terminal Cover(R)

SP Wire(L)

Center Angle

SP Bracket

Bracket Cover

SP Wire(R)

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Rear Cabinet

Front Cabinet

Key PWB

Top Cover

P151

P1901

P3101

P2002

P7706

SC3200

SC3802

Frame Cover

SC4601

P7200

P8506

SC7200

Terminal

Stand

P3805

Speaker Box

Bracket Cover

P3802

Cover (B)

SP Bracket

Terminal Cover(L)

P2006

P1900

P1902

P3700

P1501

P7201

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10. Remove the Main and CPU PWBs. 10-1. Remove the 8 lock screws 10-2. Remove the 14 lock screws 11 from the Main Top Shield, and detach the Main Top Shield. 10-3. Remove the 3 lock screws 12 from the BS terminal cover, and detach the BS terminal cover.

11. Detach the DVI PWB. 11-1. Remove the 8 lock screws 11-2. Remove the 4 lock screws

12. Remove the 3 lock screws

13. Disconnect all the connectors from all the PWBs.

from the Main PWB shield, and detach the Main PWB shield.

from DVI PWB.

from the AV-Sub Angle, and detach the AV-Sub Angle.

from the DC fan, and detach the DC fan.

P1804

P1803

P8502

CPU PWB

Main T op Shield

DVI PWB

AV -Sub Angle

Main PWB Shield

P5703

C707

CN708

CN706

P7708

Main PWB

Card Cover

BS T erminal Cover

DC Fan

P1901

P3101

SC3802

P2002

P7706

SC3200

SC4601

P7200

P8506

SC7200

P202

CN7601

CN7602

CN7603

CN7604

CN7605

CN7606

CN7607 CN7608

P101

P7704

P3811

P3808

P2004

P3807

P6001

SC4651

P3801

P3810

SC4652

P2003

P7705

P7707

CN705

CN704

CN7501

CN7502

CN7503

CN7504

CN7505

CN7506

CN7507

CN7508

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14. Remove the 3 lock screws 16

15. Remove the 1 lock screw 17

16. Remove the 6 lock screws 18

17. Remove the 6 lock screws 19

18. Remove the 5 lock screws 20

19. Remove the 3 lock screws 21

20. Remove the 4 lock screws 22

21. Remove the 2 lock screws 23

22. Remove the 4 lock screws 24

23. Remove the 4 lock screws 25

24. Remove the 8 lock screws 26

25. Remove the 2 lock screws 27

26. Remove the 4 lock screws 28

27. Remove the 2 lock screws 29

28. Remove the 2 lock screws 30

from the AV PWB, and detach the AV PWB.

from the EXT.SP PWB, and detach the EXT.SP PWB.

from the AV PWB shield, and detach the AV PWB shield.

from the LCD controller PWB, and detach the LCD controller PWB. from the Power PWB, and detach the Power PWB. from the Inverter-GND PWB, and detach the Inverter-GND PWB. from the Inverter PWB, and detach the Inverter PWB. from the 1-bit AMP. PWB, and detach the 1-bit AMP. PWB. form the speaker angle(right), and detach the speaker angle(right). form the speaker angle(left), and detach the speaker angle(left). form the fixing metals, and detach the fixing metals. from the R/C, LED PWB, and detach the R/C, LED PWB. from the fixing metal, and detach the fixing metal. from the core angles, and detach the core angles. from the LCD panel unit ass’y, and detach the LCD panel unit ass’y.

LCD Controller PWB

EXT. SP PWB

Inverter-GND PWB

AV PWB Shield

18 18

AV PWB

Fixing Metal

1-bit AMP . PWB

Inverter PWB

Power PWB

Core Angle

LCD Panel Unit Ass’y

Fixing Metal

R/C, LED PWB

SP Angle(L)

Fixing Metal

SP Angle(R)

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29. Remove the 4 lock screws 31

from the LCD Panel Unit, and detach the LCD Panel Unit.

30. Detach the sheet spacer-A/sheet spacer-B and sheet spacer-S.

31. Detach the Prism, Diffusion and Reflection/Deflection Sheets and Diffusion Panel.

32. Remove the 2 lock screws 32

Sheet Spacer-S (PSPAZA536WJZZ)

from the Lamp Holder Ass'y(top), and detach the Lamp Holer Ass'y(top).

Lamp Holder Ass’y(Top) (CHLDZA328WJ01)

Sheet Spacer-A (PSPAZA484WJZZ)

LCD Panel Unit (RLCDTA034WJZZ)

Sheet Spacer-S (PSPAZA536WJZZ)

Sheet Spacer-B (PSPAZA535WJZZ)

Prism Sheet

(PSHEPA165WJZZ) Reflection/Detlection Sheet (PSHEPA236WJZZ)

Diffusion Panel (PCOVUA026WJZZ)

Diffusion Sheet (PSHEPA166WJZZ)

Lamp Unit (KLMP-A042WJZZ)

Lamp Holder Ass’y(Top) (CHLDZA328WJ01)

Back Shield (PSLDMA507WJFW)

LC-26GA3E

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 PWB and IC, pay attention to the following precautions. When replacing units below, order those where the software has been written. DVI unit : DUNTKC595FE50 CPU unit : DUNTKC427FE20 LCD CONTROLLER unit : DUNTKC268FE86

2.Upgrading of each microprocessor software

Caution: Never "POWER OFF" the unit when software upgrade is ongoing. Otherwise the system may be damaged beyond recovery.

2-1 Software version upgrade

This unit has main and monitor microcomputer softwares. These can be rewritten via a general-purpose SD memory card. The procedures to rewrite the main and monitor microcomputer softwares are described below.

2-2 Main software version upgrade

Get ready before you start

» SD memory card of 16MB or higher capacity » PC running on Windows 98/98SE/ME/2000/XP operating system » SD memory card reader/writer with USB connectivity and PC card adapter » SD memory card formatting software

(Downloadable at http://panasonic.jp/support/audio/sd/download/sd_formatter_e.html)

LC-26GA3E

Preparations To upgrade the main software, it is necessary to get ready the SD card for version upgrade before you start.

Follow the steps below and create the SD card for version upgrade.

1 Insert the SD card into the SD card reader/writer. Start the SD card formatting software. Click [Format].

(When you have the drive options, select the drive where the SD card is inserted before you proceed.)

2 When the formatting is over, the following window appears. Click [OK].

3 Click [End] to finish the formatting.

Note: When you are done, take out the SD card once to make sure it is finished, and then insert it again.

4 Copy the binary image file KA1UAxxx.SDC (named temporarily) for version upgrade to the root directory

(folder) of the SD card drive.

Note: In the SD card drive, do not store other folders or unrelated files, or more than one binary image files for

version upgrade. Now the SD card for version upgrade is ready.

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How to upgrade the software

1 Pull out the AC cord to turn off the TV. 2 Insert the SD card for version upgrade (prepared as above) into the service socket located below left of the

right side cooling fan in the rear of the unit, in a way that the cut corner of the SD card comes at the righthand side.

Note: If the SD card is inserted in a wrong way, the card will go deep inside the unit beyond retrieval. Take due

care to insert the SD card correctly.

3 Hold down the "SYSTEM RESET" button at the lower left of the rear of the unit, and plug in the AC cord to

turn on the TV. Note: The "SYSTEM RESET" button can be released after the TV turns on. (4) Several to ten-odd seconds after the unit starts, the following version upgrade screen appears.

<SYSTEM UPGRADE> KD1E

Program OK NG

60%

EEPROM OK NG

5 Even a single failure in the process will trigger the upgrade failure screen as shown below. The word "NG"

changes to red for the item failed.

Note: In the event of a failure, repeat the upgrading process. If the process repeatedly fails, it is likely that the

hardware is troubled.

<UPGRADE FAILURE> KD1E

Program OK NG

100%

EEPROM OK NG Ver 1.19 (E 2004/06/15 1 G)

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.

<UPGRADE SUCCESS> KD1E

Program OK NG

100%

EEPROM OK NG Ver 1.19 (E 2004/06/15 1 G)

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7 SPut off the AC power to the unit (unplug the AC cord), and remove the SD card for version upgrade. 8 Now the software version upgrade is complete.

Note: When you are done with the software version upgrade, start the set, go to the top page of the adjustment

process screen and check the main software version information.

2-3 Monitor microprocessor software version upgrade

Get ready before you begin Get ready the same items as listed in the "Main software version upgrade". Preparation Create the SD card for monitor microprocessor software version upgrade in the same manner as explained in

the "Main software version upgrade". Copy the binary image file for monitor microprocessor software version upgrade to the SD card drive.

How to upgrade the software During the monitor microprocessor software version upgrade, the progress of upgrading is not shown on the

display screen. The upgrading process is seen in the blinking of the power LED.

1 Shut off the AC power to the unit (i.e. unplug the AC cord). 2 Insert the SD card for version upgrade (prepared as above) into the service socket located below left of the

right side cooling fan in the rear of the unit, in a way that the cut corner of the SD card comes at the righthand side.

Note: If the SD card is inserted in a wrong way, the card will go deep inside the unit beyond retrieval. Take due

care to insert the SD card correctly.

3 While depressing the SYSTEM RESET button located below the RS-232C connector in the rear left side of

the unit, turn on the AC power (i.e. plug in the AC cord).

Note: After the unit is started, you may release the SYSTEM RESET button.

Caution!! The moment this operation is done, the upgrading of the monitor microprocessor software starts. While the upgrade is ongoing, never power off the unit. Otherwise the upgrade will fail and the system may have a serious damage beyond recovery (inability to start).

4 After the unit startup, the power LED starts blinking in green within 10-20 seconds. 5 Wait until the power LED stops blinking, the unit restarts automatically, and the normal startup screen

appears (it will take 2-3 minutes).

6 Shut off the AC power to the unit (unplug the AC cord), and remove the SD card for version upgrade. 7 Now the software version upgrade is complete.

Note: When you are done with the software version upgrade, start the set, go to the top page of the adjustment

process screen and check the monitor microprocessor software version information.

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3.Entering and exiting the adjustment process mode

(1) Before entering the adjustment process mode, press the "TV RESET" button or execute the AV position

RESET in the video adjustment menu. (2) Pull out the AC cord to turn off the TV. (3) While holding down the "VOL (–)" and "INPUT" keys at a time, press the POWER switch of the main unit to

turn on the power.

The letter " K " appears on the screen. (4) Press the "VOL (–)" and CH (V) keys at the same time.

When multiple lines of blue letters are displayed on the screen, the unit has entered the process adjustment

mode.

If the unit does not enter the process adjustment mode (if the same display as the normal start appears), try

again. (5) To exit the adjustment process mode after the adjustment is done, unplug the AC cord from the outlet to

make a forced shutdown. (When the power was turned off with the remote controller, once unplug the AC

cord and plug it again. In this case, wait 10 seconds or so before plugging.)

Caution: Use due care in handling the information described here lest your users should know how to enter the adjustment process mode. If the settings are tampered in this mode, unrecoverable system damage may result.

4.Remote controller key operation and description of display in adjustment process mode

(1) Key operation

Remote controller key Main unit key Function CH (Ù/ù) CH (Ù/ù) Moving an item (line) by one (UP/DOWN) VOL (+/–) VOL (+/–) Changing a selected item setting (+1/_1) Cursor (UP/DOWN) Turing a page (PREVIOUS/NEXT) Cursor (LEFT/RIGHT) Changing a selected line setting (+10/_10) INPUT mark of the R/C INPUT Input switching (toggle switching) (caution required) (TV→INPUT1→INPUT2→INPUT3→INPUT4) ENTER Executing a function

* Input mode is switched automatically when relevant adjustment is started so far as the necessary input

signal is available.

(2) Description of display

(2) Current page title

(1) Current page /

Total pages

MAIN Version

1/16

[INFO]

TUNER

1.XX (E 2004/XX/XX X)

(3) Currently selected input

(4) Current color TV system

AUTO

AUTO:EURO

(5) Destination

Adjustment process menu header

TELETEXT Version DVS Version CPLD Version Monitor Version

EQ DATA CHECKSUM STANDBY CAUSE FAN STATUS TEMPERATURE

TTX PRG XX XX

3.XX A15E a

ROTATE XX

(7) Parameters

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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.)

2 PAL MAIN ADJ Auto ALL PAL MAIN image auto adjustment

[INFO]

1 MAIN Version Main microprocessor version Version display 2 TELETEXT version Text version Text microcomputer version display 3 DVS version DVS version DVS version display 4 CPLD version CPLD version CPLD version display 5 Monitor version Monitor version Obtained from the monitor. (Displays panel size and type as well.) 6 EQ DATA CHECKSUM Audio data checksum Audio data checksum display 7 STANDBY CAUSE Standby cause Last status which caused standby 8 FAN STATUS Fan status Fan status ROTATE/STOP (Interval 500msec) 9 TEMPERTURE TEMPERTURE

[INIT]

1 INDUSTRY INIT Initialization to factory settings Initialization to factory settings (Operations common to the remote 2 DATA COPY 3 HOTELMODE Hotel mode settings 4 Center Acutime Accumulated operation time Reset by initialization 5 RESET Reset 6 BacklightAcutime Accumulated monitor operation time Not reset by initialization 7 RESET Reset 8 VIC XPOS 9 VIC YPOS

9 VIC COLOR 10 VIC SIGNAL_TYPE 11 VIC READ

[PAL MAIN]

1 PAL ALL ADJ PALMAIN+SUB+TUNER PAL MAIN, SUB and TUNER DAC auto adjustment

3 TUNER DAC ADJ

4 PAL MAIN CONTRAST IC402 Contrast

5 PAL MAIN COLOR GAIN IC402 Colour gain

6 PAL SUB CONTRAST IC601 Contrast

7 PAL SUB COLOR GAIN IC601 Colour gain

8 TUNER A DAC TUNER DAC Tuner DAC

[PAL SUB]

1 PAL SUB ADJ PAL SUB PAL SUB Auto Adjustment

2 PAL SUB CONTRAST IC601 Contrast

3 PAL SUB COLOR GAIN IC601 Colour gain

4 TUNER TEST

[PAL 2D MAIN]

1 PAL 2D MAIN ADJ

2 PAL 2D MAIN CONTRAST

3 PAL 2D MAIN COLOR GAIN

[N358 MAIN]

1 IBO RS232C TEST

2 N358 MAIN ADJ Auto Auto N358 MAIN video adjustment

3 N358 MAIN CONTRAST IC402 Contrast

4 N358 MAIN COLOR GAIN IC402 Colour gain

[COMP15KMAIN]

1 COMP15K ALL ADJ Auto ALL Auto COMP15K MAIN video adjustment

2 COMP15K MAIN ADJ

3 COMP15K SUB ADJ

4 COMP15K MAIN CONTRAST IC402 Contrast

5 COMP15K MAIN COLOR GAIN IC402 Colour gain

6 COMP15K SUB CONTRAST IC601 Contrast

7 COMP15K SUB COLOR GAIN IC601 Colour gain

[HDTV]

1 HDTV ADJ Auto HDTV video adjustment

2 CONTRAST IC402 Contrast

3 COLOR GAIN IC402 Colour gain

[DVI ANALOG]

1 DVI ANALOG Auto DVI Analog video adjustment

2 R CUTOFF IC3700 Contrast

3 G CUTOFF IC3700

4 B CUTOFF IC3700

5 R DRIVE IC3700

6 G DRIVE IC3700

7 B DRIVE IC3700

[DVI DIGITAL]

1 DVI DIGITAL Auto DVI digital video adjustment

2 R CUTOFF IC3700

3 G CUTOFF IC3700

4 B CUTOFF IC3700

5 R DRIVE IC3700

6 G DRIVE IC3700

7 B DRIVE IC3700

[M GAMMA]

1 MONITOR R GAMMA LO Monitor W/B adjustment

2 MONITOR G GAMMA LO

3 MONITOR B GAMMA LO

4 MONITOR R GAMMA HI

5 MONITOR G GAMMA HI

6 MONITOR B GAMMA HI

7 GAMMA WRITE Writing in monitor gamma table

8 GAMMA RESET Reset of monitor gamma table

Hexadecimal display of the thermistor’s value

control factory setting)

[M GAMMA6 R]

1 MONITOR R GAMMA 1 2 MONITOR R GAMMA 2 3 MONITOR R GAMMA 3 4 MONITOR R GAMMA 4 5 MONITOR R GAMMA 5 6 MONITOR R GAMMA 6 7 GAMMA WRITE Writing in monitor gamma table 8 GAMMA RESET Reset of monitor gamma table

[M GAMMA6 G]

1 MONITOR G GAMMA 1 2 MONITOR G GAMMA 2 3 MONITOR G GAMMA 3 4 MONITOR G GAMMA 4 5 MONITOR G GAMMA 5 6 MONITOR G GAMMA 6 7 GAMMA WRITE Writing in monitor gamma table 8 GAMMA RESET Reset of monitor gamma table

[M GAMMA6 B]

1 MONITOR B GAMMA 1 2 MONITOR B GAMMA 2 3 MONITOR B GAMMA 3 4 MONITOR B GAMMA 4 5 MONITOR B GAMMA 5 6 MONITOR B GAMMA 6 7 GAMMA WRITE Writing in monitor gamma table 8 GAMMA RESET Reset of monitor gamma table

[PATTERN]

1 CVIC PATTERN CVIC-generated internal pattern display CVIC internal pattern display 2 PU PATTERN SEINE-generated internal pattern display SEINE internal pattern display

[ETC]

1 DATA COPY FOR INH

CARD REC INPUT Permission of card recording by external input source EEP SAVE Storage of adjustment value Saving adjustment value in storage area

EEP RECOVER Retrieval of adjustment value Retrieving adjustment value from storage area 2 AUTO INSTALLATION SW 3 STANDBY CAUSE RESET 4 SYS MODEL COUNTRY

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6. Special features

* STANDBY CAUSE (Page 1/16)

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 16/16)

Storage of EEP adjustment value

* EEP RECOVER (Page 16/16)

Retrieval of EEP adjustment value from storage area

7. Video signal adjustment procedure * Adjustment process mode menu is listed in section 5.

(1) Signal check

Signal generator level adjustment check (Adjustment to the specified level)

» Composite signal : 0.714Vp-p ± 0.02Vp-p (Pedestal to white level) » 15K component signal : Y level : 0.714Vp-p ± 0.02Vp-p (Pedestal to white level)

PB, PR level

» 33K component signal : Y level : 0.714Vp-p ± 0.02Vp-p (Pedestal to white level)

PB, PR leve

» DVI-I (analog RGB) signal : RGB level : 0.714Vp-p ± 0.02Vp-p (Pedestal to white level)

: 0.7Vp-p ±0.02Vp-p

l: 0.7Vp-p ±0.02Vp-p

(2) Entering the adjustment process mode

Enter the adjustment process mode according to the steps described in section 3.

(3) PAL signal • Tuner adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment [Input signal]

Composite full-field colour bar signal and E-12ch RF signal

[Input terminal] INPUT3 video input terminal and TUNER RF terminal

2 Auto adjustment Page 3/16

performance

Supply full-field_colour_bar (color saturation 75%) signal to the video input of INPUT3. Feed the RF signal (by use of E-12ch) to TUNER.

[Video input signal] [E-12CH]

↑100% white ↑100% white

Bring the cursor on [ËPAL ALL ADJ] and press [OK]. [ËPAL ALL ADJ FINISH] appears when finished.

(4) PAL 2DYC adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment [Input signal]

Composite full-field colour bar signal [Input terminal] INPUT3 video input terminal

LC-26GA3E

Supply full-field_colour_bar (color saturation 75%) signal to the video input of INPUT3 .

↑100% white

2 Auto adjustment Page 5/16

performance

(4) Component 15K signal adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment [Input signal]

COMP 15k 60Hz fullfield colour bar signal [Input terminal] INPUT3 component input terminal

2 Auto adjustment Page 7/16

performance

(6) DVI-I (analog) signal adjustment

Bring the cursor on [ËPAL 2D MAIN ADJ] and press [OK]. [ËPAL 2D MAIN ADJ FINISH] appears when finished.

Supply component 15k full-field colour bar (color saturation 100%) signal to the component input terminal of INPUT3.

↑100% white

Bring the cursor on [ËCOMP 15K ALL ADJ] and press [OK]. [ËCOMP 15K ALL ADJ FINISH] appears when finished.

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment DVI-I (analog)

2 Auto adjustment Page 9/16

performance

Supply XGA (1024x768_60Hz) window pattern signal to the DVI-I (analog) input.

1/4

1/2

1/4

Bring the cursor on [ËDVI ANALOG ADJ] and press [OK]. [ËDVI ANALOG ADJ FINISH] appears when finished.

1/2

100% White

0% Black

1/4

LC-26GA3E

(7) DVI-I (digital) signal adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment DVI-I (digital)

Supply XGA (1024x768_60Hz) window pattern signal to the DVI-I (analog) input.

1/4

2 Auto adjustment Page 10/16

performance

1/2

1/4

Bring the cursor on [ËDVI DIGITAL ADJ] and press [OK]. [ËDVI DIGITAL ADJ FINISH] appears when finished.

1/2

1/4

100% White

0% Black

8. Adjustment of white balance

Start up the set and adjust the white balance.

1. Place the set under the following conditions. AV Mode: [DYNAMIC] Monochrome: [ON] Black: [OFF] Feed the component 15k (60Hz) adjustment signal via INPUT3 to display the adjustment screen (High: 70%, Low: 30%).

2. Execute the automatic adjustment.

1) In order for the 70% pattern to become the reference value (page 11/16), adjust the "MONITOR_R_

GAMMA_HI ", "MONITOR_G_GAMMA_HI" and "MONITOR_B_GAMMA_HI" settings.

2) In order for the 30% pattern to become the reference value (page 11/16), adjust the "MONITOR_R_

GAMMA_LO ", "MONITOR_G_GAMMA_LO" and "MONITOR_B_GAMMA_LO" settings. Reference value: [Minolta CA-210] (525i) Make adjustments so that x=0.272 and y=0.275. (70% gray scale) Make adjustments so that x=0.272 and y=0.275. (30% gray scale)

9. Initialization to factory settings

Caution: When initialization is performed, all user setting data including the channel settings are initialized. Be cautious when making this adjustment.

(The adjustments done in the adjustment process mode are not initialized.)

Adjustment item Adjustment conditions Adjustment procedure

1 Initialization

Enter the adjustment process mode. Bring the cursor on to [INDUSTRY INIT] in page 2/16. Select [ON] using the VOLUME [+/-] key and press the [OK] key. Initialization is executed. When the unit automatically exits from the process adjustment mode and the display appears on the TV, initialization is complete. * Never shut off the power during the initialization process.

The following settings are initialized in this adjustment.

1. User setting

2. Channel data (e.g. broadcast frequencies)

3. Operation time

4. Maker's optional setting

5. Password data

LC-26GA3E

After the adjustment, cancel the adjustment process mode. To exit the adjustment process mode, unplug the AC power cable from the outlet to make a forced shutdown. (When the power was turned off with the remote controller, once unplug the power cable and plug it again. In this case, wait 10 seconds or so before plugging.)

LC-26GA3E

10. Display adjustment procedure

1. Adjustment procedure

Enter the display process mode and then adjust COM BIAS.

2. Entering and exiting the adjustment process mode

(1) Before entering the adjustment process mode, press the "RESET" button or execute the AV position

RESET in the menu video adjustment. (2) Pull out the AC cord to turn off the TV. (3) While holding down the "VOL (+)" and "CH (Ù)" keys at a time, press the "POWER" key of the main

unit to turn on the power.

(The VOL "(+)" and "CH (Ù)" keys should be pressed and held until the display appears.)

The letter "<K>" appears on the screen. (4) Press the VOL "+/-" key or CH " ù/Ù" key on the remote control.

Multiple lines of blue characters appearing on the display indicate that the unit is now in the adjustment

process mode.

When you fail to enter the adjustment process mode (the display is the same as normal startup), retry

the procedure. (5) To exit the adjustment process mode after the adjustment is done, unplug the AC cord from the outlet to

make a forced shutdown. (When the power was turned off with the remote controller, once unplug the

AC cord and plug it again. In this case, wait 10 seconds or so before plugging.)

3. Adjustment process mode key operation table

Key Function 1 (when on the left side of a page) Function 2 (when changing a numeric value)

Cursor UP

Cursor DOWN

Cursor RIGHT

Cursor LEFT

OK INPUT mark of the

R/C (caution required)

CH (ù)

CH (Ù)

VOL (+)

VOL (–)

Moving up by one item or moving to the previous page (when at the top) Moving down by one item or moving to the next page (when at the bottom) Moving to the right by one item or moving to another page (in the case of the initial page) Moving to the left by one item or moving to another page (in the case of the initial page) Test pattern off Moving to the next page

Incrementing the adjustment value by one or executing the item (in the case of W or R item) Decrementing the adjustment value by one or executing the item (in the case of W or R item) Moving to the right by one item

Moving to the left by one item

Executing the item (in the case of W or R item) Moving to the next page

Moving to the left by one item

3. COM BIAS adjustment Shift to the [COM BIAS] item with the cursor UP/DOWN key and select a numeric value with the cursor RIGHT/LEFT key. Changing the numeric value with the cursor UP/DOWN key will make appear the test pattern. Make an adjustment so that the flicker near the center of the screen is minimized.

Adjusting procedure by use of [RS-232C]

» 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.

» Start the unit with the RS-232C cable connected. » Start the terminal software. (The freeware readily available on the Internet will do.) » Make the following settings.

Baud rate 9600 Data 8 bits Parity None Stop bit 1 bit Flow control Not implemented

» If the settings are correct, the terminal software indicates "ERR" against pressing of the "ENTER" key. » After the settings are done correctly, it is possible to make an adjustment by typing in the command

shown in the table below and pressing the "ENTER" key on the keyboard.

LC-26GA3E

Command entry is successful if the terminal software indicates "OK" when the "ENTER" is pressed. If "ERR" is shown, retry to enter the command.

RS232C command table

Command Function Remarks

MSET1001

MOFR**** MOFG**** MOFB**** MGAR**** MGAG**** MGAB**** MINF0000 MINF0001 MINF0002

Starting the white balance adjustment

Adjusting the R GAMMA L value Adjusting the G GAMMA L value Adjusting the B GAMMA L value Adjusting the R GAMMA H value Adjusting the G GAMMA H value Adjusting the B GAMMA H value Displaying the R GAMMA table Displaying the G GAMMA table Displaying the B GAMMA table

Ending the adjustment with a numeric value other than 1001

Range: 0000~0255 Range: 0000~0255 Range: 0000~0255 Range: 0000~0255 Range: 0000~0255 Range: 0000~0255

+ 126 hidden pages

Sharp lc26ga3e schematic

Specifications and Main Features

Frequently Asked Questions

User Manual