SHARP LC-26GA4U Service Manual

LC-26GA4D
LC-26GA4U

SERVICE MANUAL

S64V2LC26GA4U

LCD COLOR TELEVISION

LC-26GA4D

MODELS

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 ......................................................................................................................................5

» OPERA TION MANUAL ...............................................................................................................................6

» DIMENSIONS ...........................................................................................................................................13

» REMOVING OF MAJOR PARTS..............................................................................................................14

» ADJUSTMENT PROCEDURE..................................................................................................................18

» TROUBLESHOOTING T ABLE .................................................................................................................36

» OVERALL WIRING DIAGRAM/CHASSIS LAYOUT.................................................................................46

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

» MAIN BLOCK DIAGRAM..........................................................................................................................50

» CPU BLOCK DIAGRAM ...........................................................................................................................52

» AV BLOCK DIAGRAM ..............................................................................................................................56

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

» DESCRIPTION OF SCHEMATIC DIAGRAM ...........................................................................................62

» SCHEMATIC DIAGRAM ...........................................................................................................................63

» PRINTED WIRING BOARD ASSEMBLIES........................................................................................... 146

» PARTS LIST........................................................................................................................................... 182

» PACKING OF THE SET......................................................................................................................... 221

LC-26GA4U

Page

SHARP CORPORATION

This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

LC-26GA4D

1
1

LC-26GA4U

IMPORTANT SERVICE SAFETY PRECAUTION

Ë

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,

A V

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 120volt AC outlet.
» Using two clip leads, connect a 1.5k 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 0.75 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

1.5k ohm
10W

0.15 µF

TEST PROBE

TO EXPOSED
METAL PARTS

CONNECT TO
KNOWN EARTH
GROUND

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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
components having such features are identified by "

23456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012

å" and shaded areas in the Replacement Parts List
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.

2

LC-26GA4D

2

2

DVM

ECHELLE CA

1.5k ohm
10W

0.15 µF

SONDE D'ESSAI

AUX PIECES
METALLIQUES
EXPOSEES

BRANCHER A UNE
TERRE CONNUE

LC-26GA4U

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

Ë

Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement
accoutumé à toute vérification de sécurité et aux conseils suivants.

AVERTISSEMENT

1. N'entreprendre aucune modification de tout circuit.
C'est dangereux.

2. Débrancher le récepteur avant toute réparation.

PRECAUTION: POUR LA
PROTECTION CONTINUE CONTRE
LES RISQUES D'INCENDIE,
REMPLACER LE FUSIBLE
F701 (3.15A, 250V), F702 (3.15A,

A V

250V), F703 (2A, 250V), F705 (1A,
DC450V), F706 (5A, 250V), F707 (5A,
250V)

VERIFICATIONS CONTRE L'INCEN-DIE ET
LE CHOC ELECTRIQUE

Avant de rendre le récepteur à l'utilisateur, effectuer
les vérifications suivantes.

1. Inspecter tous les faisceaux de câbles pour s'assurer
que les fils ne soient pas pincés ou qu'un outil ne soit
pas placé entre le châssis et les autres pièces
métalliques du récepteur.

2. Inspecter tous les dispositifs de protection comme les
boutons de commande non-métalliques, les isolants,
le dos du coffret, les couvercles ou blindages de réglage
et de compartiment, les réseaux de résistance­capacité, les isolateurs mécaniques, etc.

3. S'assurer qu'il n'y ait pas de danger d'électrocution en
vérifiant la fuite de courant, de la facon suivante:

• Brancher le cordon d'alimentation directem-ent à une
prise de courant de 120V. (Ne pas utiliser de
transformateur d'isolation pour cet essai).

• 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.

• Utiliser un voltmètre CA d'une sensibilité d'au moins
5000Ω/V pour mesurer la chute de tension en travers
de la résistance.

• Toucher avec la sonde d'essai les pièces métalliques
exposées qui présentent une voie de retour au châssis
(antenne, coffret métallique, tête des vis, arbres de
commande et des boutons, écusson, etc.) et mesurer
la chute de tension CA en-travers de la résistance.
T outes les vérifications doivent être refaites après avoir
inversé la fiche du cordon d'alimentation. (Si
nécessaire, une prise d'adpatation non polarisée peut
être utilisée dans le but de terminer ces vérifications.)
Tous les courants mesurés ne doivent pas dépasser

0.5 mA.
Dans le cas contraire, il y a une possibilité de choc
électrique qui doit être supprimée avant de rendre le
récepteur au client.

234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121

AVIS POUR LA SECURITE

De nombreuses pièces, électriques et mécaniques,
dans les téléviseur ACL présentent des caractéristiques
spéciales relatives à la sécurité, qui ne sont souvent
pas évidentes à vue. Le degré de protection ne peut
pas être nécessairement augmentée en utilisant des
pièces de remplacement étalonnées pour haute tension,
puissance, etc.
Les pièces de remplacement qui présentent ces
caractéristiques sont identifiées dans ce manuel; les
pièces électriques qui présentent ces particularités sont

234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121

identifiées par la marque " å " et hachurées dans la
liste des pièces de remplacement et les diagrammes
schématiques.
Pour assurer la protection, ces pièces doivent être
identiques à celles utilisées dans le circuit d'origine.
L'utilisation de pièces qui n'ont pas les mêmes
caractéristiques que les pièces recommandées par
l'usine, indiquées dans ce manuel, peut provoquer des
électrocutions, incendies, radiations X ou autres
accidents.

3

LC-26GA4D
LC-26GA4U

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 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

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

4

SPECIFICATIONS

Item 26" LIQUID CRYSTAL TELEVISION,

Model: LC-26GA4U

LCD panel 26" Advanced Super View & BLACK TFT LCD

LC-26GA4D
LC-26GA4U

Number of dots 3,147,264 dots (1366 768 3 dots)
TV

Function

Brightness 450 cd/m
Viewing angles H : 170° V : 170°
Audio amplifier 10W 2
Speakers Ø 8cm 2pcs, Ø 2.5cm 2pcs
Terminals AV in, COMPONENT in

TV-standard (CCIR)
Receiving

Channel

Audio multiplex BTSC System

Rear INPUT 1

INPUT 2

INPUT 4
INPUT 5 Audio in, DVI-I in
ANTENNA 75 Unbalance, F Type for VHF/UHF/CATV in 2, out 1
MONITOR OUTPUT

CENTER
CHANNEL INPUT

VHF/UHF
CATV 1-125ch

INPUT 3

American TV Standard NTSC System
VHF 2-13ch, UHF 14-69ch

2

×

AV in, COMPONENT in
S-VIDEO in, AV in

HDMI in

Ω

S-VIDEO out, AV out

Ω

4 10W (L/R)SPEAKER
RCA pin

××

××

Front

OSD language
Power Requirement

Power Consumption
Weight

Accessories Operation manual ( 1), Remote control unit ( 1), AC cord ( 1), "AAA" size

Headphones Ø 3.5mm jack

English/French/Spanish
AC 120 V, 60 Hz (FOR NORTH AMERICA)

AC 110-240 V, 50/60 Hz(FOR OTHERS)

139W (0.4W Standby with AC 120 V)

26.5 lbs./12 kg (Display only), 34.2 lbs./15.5 kg (with Display and speaker),

40.8 lbs./18.5 kg (with Display, speaker and stand)

battery ( 2), RF cable ( 1)

××

×××

Specifications are subject to change without prior notice.

5

LC-26GA4D

Part names

POWER indicator

OPC sensor

Display

POWER (On/Off)

button

INPUT

button

VOLUME buttons

(VOL-/+)

CHANNEL buttons

(CH )

Remote control sensor

*OPC: Optical Picture Control

SLEEP timer indicator

OPC indicator

Headphone jack

CARD indicator

PC CARD slot

Ù/ù

RESET*

INPUT 3 terminals

SYSTEM RESET**

Display

Antenna (A) input terminal

Antenna (B) input terminal

Antenna (A) output terminal

* Press RESET if the TV cannot return to its original state after performing various operations.

• AV MODE resets to DYNAMIC (Fixed)

• TV channel returns to initial channel setting (Air:2ch, Cable:1 or 2ch)

• Twin pictur

e resets to normal

• Audio setting initializes

• Dolby virtual resets to Off

• Image position initializes

**Press SYSTEM RESET if the TV does not operate after starting up.

NOTE

• Pressing RESET will not work if the TV is in standby mode (indicator lights red).

• Pressing RESET will not delete channel preset or secret number. See page for clearing the secret number when you

know it. See page for initializing to the factory pr eset values when you forget your secret number.

DC OUTPUT

terminal

(Terminal for expanded

functionality in the near future.)

SPEAKER terminals

AC INPUT

terminal

RS-232C

terminal

INPUT 2 terminals

INPUT 1 terminals

INPUT 5 terminals

INPUT 4 terminal

CENTER CHANNEL

INPUT ter

minal

MONITOR OUTPUT terminals

LC-26GA4U

OPERATION MANUAL

6

LC-26GA4D

Remote control unit

NOTE

• When using the remote control unit, point it at the TV.

3

2

115

5

6

4

7

18

16

17

19

20

8

9

30

21

22

10 24

25

26

12

11

27

13

14 29

23

28

1 TV POWER: Switch the TV power on or 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.

50 – 9: Set the channel.

6 ANT-A/B: Select between ANT-A and B to watch

broadcasts via the two tuners.

7VOL/ : Set the volume.

8 CARD: Switch to card mode.

9

Virtual: Select Virtual Dolby Surround settings.

10 EXIT: Turn off the menu screen.

11 SELECT: Select the active screen.

12 TWIN PICTURE: Set the twin picture mode.

Press again to return to normal screen.

13 SLEEP: Set the sleep timer

.

14 AUDIO: Select the MTS/SAP.

15 FUNCTION: Switches the remote control for TV, CBL/

SAT, VCR, DVD and AUDIO operation. Indicator lights

up for the current mode.

16

: When pressed all buttons on the r emote control unit

will light. The lighting will turn off if no operations are

performed within about 5 seconds. This button is used

for performing operations in dark places.

17 VIEW MODE: Select the screen size.

18 FLASHBACK: Return to the previous channel or input

external mode.

19 INPUT: Select a TV input sour

ce. (TV, INPUT 1, INPUT

2, INPUT 3, INPUT 4, INPUT 5, Card)

20 CH / : Select the channel.

21 MUTE: Mute the sound.

22 MENU: Display the menu screen.

23 ////ENTER: Select a desir ed item on the screen.

24 RETURN: Return to the previous menu screen.

25 FAVORITE CH

A, B, C, D: Select four preset favorite channels in four

different categories.

While watching, you can toggle the selected channels

by pressing A, B, C and D.

26 FREEZE: Set the still image. Press again to return to

normal screen.

27 CC: Display captions during closed-caption source.

28

EDIT:

Register favorite channel.

29 AV MODE: Select an audio or video setting.

USER, DYNAMIC (Fixed), DYNAMIC. PC mode:

STANDARD, USER.)

30

•

(DOT)

(AV mode: STANDARD, MOVIE, GAME,

Part names

Using external equipment

You can connect many types of external equipment to your TV, like a DVD player, VCR, Digital TV tuner, PC,

HDMI equipment, game console and camcorder. To view external source images, select the input source from

INPUT on the remote control unit or on the Display.

CAUTION

• To protect all equipment, always turn off the TV before

connecting

to a DVD player, VCR, Digital TV tuner, PC,

HDMI equipment, game console, camcorder or other

external equipment.

NOTE

•

• Please

refer to the relevant operation manual (DVD player ,

PC, etc.) car

efully before making connections.

• Each time INPUT is pressed, the input source toggles.

• Refer

to your external equipment operation manual for

the signal type.

Displaying an external equipment image

Explanation here is for the setting when connecting

DVD to INPUT1 terminal.

INPUT button

T o watch a DVD image, select "INPUT1" from "INPUT

SOURCE" menu using INPUT on the remote control

unit or on the Display.

INPUT SOURCE

TV

INPUT1

INPUT2

INPUT3

INPUT4

INPUT5

CARD

1

MENU

[

Option

...

Input Select

]

Auto

COMPONENT

Video

For INPUT1 signal

Select the desired signal type.

The setting is stored and can be selected on the

"INPUT SOURCE" menu.

Press MENU and the MENU scr een displays.

2

3

Press / to select "Input Select", and then

press ENTER.

4

Press / to select "Option".

MENU

[

Option

...

Input Select

]

Option

Input Select

Digital Noise Reduction

Output Select

Audio Only

Quick Shoot

[Fixed]

[Auto]

[Low]

[Off]

Center Channel Input

Caption Setup

[Off]

NOTE

• If the image does not come in clearly, you may need to

change the input signal type setting on the "Input Select"

menu.

Selecting the INPUT signal

See pages for external equipment connection.

LC-26GA4U

7

LC-26GA4D

Using external equipment

DVD player

Connecting a DVD player

You can use the INPUT 1, INPUT 2, INPUT 4 or INPUT 5 terminals when connecting to a DVD player and other

audiovisual equipment.

Component

video cable

(commercially

available)

Audio cable

(commercially available)

AV cable (commercially

available)

DVD player

DVD player

ø 3.5 mm stereo minijack cable

(commercially available)

DVI cable (Commercially available)

When using component cable.

When using composite cable.

When using DVI cable. (INPUT 5)

VCR

AV cable

(commercially available)

Connecting a VCR

You can use the INPUT 3 terminal when connecting a VCR and other audiovisual equipment.

Game console/Camcorder

S-video cable

(commercially

available)

Connecting a game console or camcorder

A game console, camcorder and some other audiovisual equipment are conveniently connected using the

INPUT 3 terminals.

NOTE

• The S-video terminal has priority over the video terminals.

AV cable

(commercially available)

S-video cable

(commercially

available)

NOTE

• The S-video terminal has priority over the video terminals.

LC-26GA4U

8

Using external equipment

Digital TV STB

Connecting a Digital TV STB

You can use the INPUT 1, INPUT 2, INPUT 4 or INPUT 5 terminals when connecting a Digital TV STB and other

audiovisual equipment.

Component video cable

(commercially available)

Audio cable

(commercially available)

AV cable

(commercially available)

Digital TV STB

Digital TV STB

ø 3.5 mm stereo minijack cable

(commercially available)

DVI cable (Commercially available)

When using component cable.

When using composite cable.

When using D

VI cable. (INPUT 5)

Connecting HDMI equipment

You can use the INPUT 4 terminal when connecting an HDMI equipment.

HDMI equipment

HDMI cable

(Commercially available)

Displaying an image from HDMI equipment

To watch an HDMI equipment image, select

"INPUT4" from "INPUT SOURCE" menu

using INPUT on the remote control unit or

on the TV.

INPUT SOURCE

TV

INPUT1

INPUT2

INPUT3

INPUT4

INPUT5INPUT5

CARD

1

Press MENU and the MENU scr een displays.

2

3

Press / to select "HDMI Setup", and then

press ENTER.

4

Press / to select "Option".

MENU

[

Option

...

HDMI Setup

]

Option

Digital Noise Reduction

Output Select

Center Channel Input

Audio Only

Quick Shoot

[Fixed]

[Off]

HDMI Setup

[Low]

[Off]

5

Press / to select the desired item and

press ENTER.

Press / / / to

select the desired setting

and press ENTER.

6

NOTE

• Refer to your external equipment operation manual for

the signal type.

Selectable items

Auto/RGB/YCbCr

4:4:4/YCbCr 4:2:2

Auto/ITU601/

ITU709

Standard/

Out of standard

Enable/Disable

HDMI Setup

items

Signal

Type

Color

Matrix

Dynamic

Range

Auto View

Description

Select the signal type from

an HDMI terminal. Unless

the image quality looks

obviously poor, select Auto.

Select the internal color

space conversion method

when an RGB signal is

input. Normally, select

Auto.

Select the signal amplitude

range. Normally, select

Standard.

Set whether or not to use

VIEW MODE based on

signal recognition,

including an HDMI signal.

LC-26GA4D
LC-26GA4U

9

LC-26GA4D

Using external equipment

PC with DVI terminal

Connecting a PC

Use the INPUT 5 terminal to connect a PC.

ø 3.5 mm stereo minijack cable

(commercially available)

DVI cable (Commercially available)

ø 3.5 mm stereo minijack cable

(commercially available)

PC with analog RGB terminal

RGB/DVI conversion cable

(Commercially available)

Rear view

Connecting external speakers

Make sure to connect the speaker terminal and

cable polarity ( , ) properly

• The speaker terminals have plus ( ) and minus ( )

polarity.

• Plus is red and minus is black.

• The cables are also divided into plus and minus.

• When connecting the left/right speakers, be sure to

connect the plus/minus terminals with the correct cables.

NOTE

• Unplug the AC cord from the AC outlet before installing

the speakers.

CAUTION

• Make sure external speakers have 4 ohm and 10 watt

specifications.

• Connect the plus/minus terminals with the correct cables.

Incorrect connection may cause a short.

How to connect the

speaker cable

Pull up the

lid.

Insert the

edge of the

cable.

Put the lid

bac

k

down.

Make sure to disconnect the connected speaker

cables in advance when connecting external

speakers.

–

–

+

+

1

2

3

LC-26GA4U

10

RS-232C port specifications

Return codeCommand 4-digits Parameter 4-digits

PC Control of the TV

• When a program is set, the TV can be controlled from the PC using the RS-232C terminal. The input signal

(PC/AV) can be selected, the volume can be adjusted and various other adjustments and settings can be

made, enabling automatic programmed playing.

•

Attach an RS-232C cable cross-type (commercially available) to the supplied Din/D-Sub RS-232C for the

connections.

NOTE

• This operation system should be used by a person who is accustomed to using computers.

Communication conditions

Set the RS-232C communications settings on the PC to match the display

’

s communications conditions.

The TV’s communications settings are as follows:

Baud rate:

Parity bit:

Data length:

Stop bit:

Flow control:

9,600 bps

8 bits

None

1 bit

None

Appendix

Command format

Communication procedure

Send the control commands from the PC via the RS-232C connector.

The TV operates according to the received command and sends a response message to the PC.

Do not send multiple commands at the same time. Wait until the PC receives the OK response before sending

the next command.

Eight ASCII codes CR

Command 4-digits:Command. The text of four characters.

Parameter 4-digits:Parameter 0 – 9, x, blank, ?

Parameter

Input the parameter values, aligning left, and fill with blank(s) for the remainder. (Be sure that 4 values are input for the

parameter.)

When the input parameter is not within an adjustable range, "ERR" returns. (Refer to "Response code format".)

No problem to input any numerical value for "x" on the table.

When "?" is input for some commands, the present setting value responds.

C1 C2 C3 C4 P1 P2 P3 P4

0055

100

30

0009

0

????

?

+

Command table

• About the command except being indicated here, it is outside the guarantee range of operation.

CONTROL ITEM COMMAND

PARAMETER

CONTROL CONTENTS

POWER SETTING It shifts to standby.

It input-switches by the toggle. (It is the same as an input change key)

It input-switches to TV. (A channel remains as it is. (Last memory))

It input-switches to INPUT1~INPUT5.

It shifts to CARD mode.

An input change is also included.

Although it can choose now, it is toggle operation in inside.

Although it can choose now, it is toggle operation in inside.

(Toggle)

Input terminal number (1

–5)

AUTO

VIDEO

COMPONENT

DIGITAL PC

ANALOG PC

DIGITAL AV

ANALOG AV

(Toggle)

STANDARD

MOVIE

USER

GAME

DYNAMIC (Fixed)

DYNAMIC

Volume (0–60)

AV mode. ( 10)

PC mode. (0–180)

AV mode. ( 20)

PC mode. (0–100)

Only PC mode. (0

–180)

Only PC mode. (0

–40)

(Toggle) [AV]

An input change is included if it is not TV display.

In Air, 2–69ch is effective.

In Cable, 1–125ch is effective.

If it is not TV display, it will input-switch to TV.

If it is not TV display, it will input-switch to TV.

Change toggle operation of tuner A/B.

Toggle operation of a closed caption.

(Toggle)

Side Bar [AV]

S.Stretch [AV]

Zoom [AV]

Stretch [AV]

Normal [PC]

Zoom [PC]

Stretch [PC]

Dot by Dot [PC]

On

Off

OFF

OFF TIMER – 30 MIN.

The channel number of TV

The channel number of TV 1

The channel number of TV 1

(Toggle)

(Toggle)

(1–125)

AUTO

POWR

ITGD

ITVD

IAVD

ICRD

INP1

INP5

INPUT SELECTION A TOGGLE

INPUT SELECTION B

AV MODE SELECTION

VOLUME

POSITION

VIEWMODE

Dolby Virtual

SLEEP TIMER

CHANNEL

ANT-A/B

CC

DIRECT

CH UP

CH DOWN

CHANNEL

H-POSITIONH-POSITION

V-POSITION

CLOCK

PHASE

INPUT 1

INPUT 5

AVMD

VOLM

HPOS

VPOS

CLCK

PHSE

ACDV

OFTM

DCCH

CHUP

CHDW

ANTS

CLCP

WIDE

0

x

0

*

x

0

5

6

7

8

1

2

0

*

*

*

*

*

0

0

*

x

x

x

x

1

1

2

0

1

2

3

4

5

6

7

8

*

*

1

2

3

4

5

6

*

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

*

*

*

*

*

*

*

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

*

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

*

*

*

*

*

*

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

(Toggle)

AUDIO SELECTION

ACHAx _ __

_

_

OFF TIMER – 60 MIN.

OFF TIMER – 90 MIN.

2

3

_

_

_

_

_

_

OFF TIMER – 120 MIN. 4___

_

_

(Toggle)

On

Off

MUTE

MUT E 0

1

2

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

AUTO

VIDEO

COMPONENT

AUTOINP2

INPUT 2

0

1

2

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

_

TV

INPUT1-5

CARD

NOTE

• If an underbar (_) appears in the parameter column, enter a space.

• If an asterisk (*) appears, enter a value in the range indicated in brackets under CONTROL CONTENTS.

• As long as that from which the parameter ( ) in the table is a numerical value, it may write anything.

Return code (0DH)

Response code format

Normal response

Problem response (communication error or incorrect command)

Return code (0DH)

OK

ERR

×

LC-26GA4D
LC-26GA4U

11

LC-26GA4D

Appendix

PC compatibility chart

Apple and Macintosh are registered trademarks

of Apple Computer, Inc.

DDC is a registered trademark of Video Electronics

Standards Association.

Power Management is a registered trademark of

Sun Microsystems, Inc.

VGA and XGA are registered trademarks of

International Business Machines Co., Inc.

PC/MAC Resolution

Horizontal Frequency

Vertical Frequency

VESA Standard

PC

31.5 kHz

37.9 kHz

31.5 kHz

37.9 kHz

31.5 kHz

37.9 kHz

37.5 kHz

43.3 kHz

31.5 kHz

35.1 kHz

37.9 kHz

48.1 kHz

46.9 kHz

53.7 kHz

48.4 kHz

56.5 kHz

60.0 kHz

68.7 kHz

45.0 kHz

48.1 kHz

64.0 kHz

34.9 kHz

49.7 kHz

60.2 kHz

640 x 400

720 x 400

VGA

640 x 480

WVGA 848 x 480

SVGA

800 x 600

1024 x 768XGA

1280 x 720

WXGA

1280 x 768

SXGA

1280 x 1024

VGA

640 x 480

MAC13"

XGA

1024 x 768

MAC19"

SVGA

832 x 624

MAC16"

60 Hz

85 Hz

60 Hz

85 Hz

60 Hz

72 Hz

75 Hz

85 Hz

60 Hz

56 Hz

60 Hz

72 Hz

75 Hz

85 Hz

60 Hz

70 Hz

75 Hz

85 Hz

60 Hz

60 Hz

60 Hz

67 Hz

75 Hz

75 Hz

O

O

O

O

O

O

O

O

O

O

O

O

O

O

O

O

Basic adjustment settings

AV input mode menu items

List of AV menu items to help you with

operations

OPC

Backlight

Contrast

Brightness

Color

Tint

Sharpness

Advanced

C.M.S.

Color Temp.

Black

3D-Y/C

Monochrome

Film Mode

I/P Setting

Picture

No Signal Off

No Operation Off

EZ Setup

CH Setup

Speaker Setup

Input Label

Parental CTRL

Position

Picture Flip

Langua

ge

Treble

Bass

Balance

Dolb

y Virtual

Audio Only

Digital Noise Reduction

HDMI Setup

Input Select

Output Select

Quick Shoot

Center Channel Input

Caption Setup

Audio

Power Control

Setup

Option

PC input mode menu items

List of PC menu items to help you with

operations

OPC

Backlight

Contrast

Brightness

Red

Green

Blue

Advanced

C.M.S.

Picture

Power Management

Speaker Setup

Input Signal

Auto Sync.

Input Label

Fine Sync.

Picture Flip

Language

Audio

Power Control

Setup

Treble

Bass

Balance

Dolby Virtual

Option

Audio Only

Input Select

Output Select

Quic

k Shoot

Center Channel Input

LC-26GA4U

12

Unit: inch/(mm)

315/16 (100)

3

15

/

16

(100) 5

15

/

16

(151)

2223/64 (568)

12

5

/

8

(321)

267/64 (663)

333/8 (848)

8

7

/

64

(206)

19

13

/

32

(493)

7

29

/

32

(201)

16

1

/

64

(407)

3

47

/

64

(95)

2023/64 (517)

243/64 (68)

1015/16 (278)

LC-26GA4D
LC-26GA4U

DIMENSIONS

13

LC-26GA4D
LC-26GA4U

REMOVING OF MAJOR PARTS

1. Remove the four lock screws from the stand, and detach the stand.

2. Remove the terminal cover(left, right and bottom).

3. Remove the two lock screws each from the bracket cover(left and right), and detach both the bracket covers.

4. Remove the two lock screws each from the speaker(left and right), and detach both the speakers.

5. Remove the 15 lock screws from the cabinet-B, and detach the cabinet-B.

6. Remove the four lock screws from the center angle, and detach the center angle.

7. Remove the key PWB.
7-1. Remove the two lock screws from the top cover.
7-2. Remove the two lock screws from the key PWB.

8. Remove the two lock screws from the angle.

9. Remove the five screws from main PWB frame.

10. Disconnect all the connectors from all the PWBs.

6

Center Angle

Top Cover

7-1

8

KEY PWB

Speaker

Bracket Cover

3

Stand

1

4

Terminal Cover (R)

5

5

2

Terminal Cover (L)

2

3

Bracket Cover

Cabinet-A

4

Speaker

7-2

P151

P1900

P1901

P1904

P1902

P5706

P1903

SC3802

P2002
P7706

P5702

P3701

SC3200

9

10

SC4601

SC7200
P7200

P3700

9

10

P5701

P3802

Angle

P1502

P1803
P1804

P1802

P3803

P3801

SC7201

P401

P501

P5704

CN708

P1501

P2006

P8506

P5002

SC5102

P8502

CN706

10

14

LC-26GA4D
LC-26GA4U

11. Remove the main, CPU and PC card PWBs.
1 1-1.Remove the one lock screw from flap door, and two lock screws from PWB shield, and detach the PC card

PWB.

11-2. Remove the 15 lock screws from the main PWB shield, and detach the main PWB shield and the main

PWB.

11-3. Remove the two lock screws from the frame cover, and detach the frame cover.

12. Detach the DVI PWB.

11-2

12-1. Remove the two lock screws from DVI PWB.
12-2. Remove the one lock screw, two screws and

11-2

two hexagon shaft screws from the DVI PWB,
and detach the DVI PWB.

12-3. Remove the four lock screws from HDMI

shield, and detach the HDMI shield.

13. Remove the three lock screws from the cooling
fan, and detach the cooling fan.

11-1

PWB Shield

11-1

Main PWB Shield

11-2

14. Disconnect all the connectors from all the PWBs.

CPU PWB

Main PWB

12-1

PC Card PWB

Flap Door

11-1

11-2

P202

CN7601

CN7602

CN7603

CN7604

CN7605

CN7606

CN7607
CN7608

14

P1101

P101

P7704

P3804

P3805

P2004

P5703

SC4651

P6001

12-2

DVI PWB

Angle

12-2

Frame Cover HDMI Shield

SC4652

CN707

P3801

P6003

CNA101

CNA102

14

12-2

14

P7707

12-3

P7705

DVI Shield

12-3

CN705

CN702

Main PWB Chassis

CN7501

CN704

14

13

11-3

Frame Cover

Cooling Fan

P7708

CN7502

CN7503

CN7504

CN7505

CN7506

CN7507

CN7508

15

LC-26GA4D
LC-26GA4U

15. Remove the seven lock screws from the AV PWB, and detach the AV PWB.

16. Remove the one lock screw from EXT-SP PWB, and detach the EXT-SP PWB.

17. Remove the six lock screws from the LCD control PWB, and detach the LCD control PWB.

18. Remove the five lock screws from the power PWB, and detach the power PWB.

19. Remove the three lock screws from the inverter-GND PWB, and detach the inverter-GND PWB.

20. Remove the four lock screws from the inverter PWB, and detach the inverter PWB.

21. Remove the two lock screws from the 1-bit AMP. PWB, and detach the 1-bit AMP. PWB.

22. Remove the four lock screws form the speaker angle(right), and detach the speaker angle(right).

23. Remove the four lock screws form the speaker angle(left), and detach the speaker angle(left).

24. Remove the four lock screws form the center angle, and detach the center angle.

25. Remove the two lock screws from the RC/LED PWB, and detach the RC/LED PWB.

26. Remove the two lock screws from the LCD panel unit ass’y, and detach the LCD panel unit ass’y.

LCD Control PWB

19

17

20

EXT-SP PWB

Inverter-GND PWB

15

16

15

AV PWB

AV PWB Frame

POWER PWB

23

Inverter GND PWB

18

21

26

1-Bit Amp PWB

22

Speaker
Angle (R)

16

R/C, LED PWB

25

Center Angle

Speaker
Angle (L)

24

27. Remove the four lock screws from the LCD panel unit, and detach the LCD panel unit.

28. Detach the reflection/deflection, prism and diffusion sheets and diffusion panel.

29. Remove the four lock screws from the lamp fixing holder, and detach the lamp fixing holer.

30. Detach the lamp unit from the lamp clip.

Lamp Holder (Top)
(CHLDZA328WJ01)

LC-26GA4D
LC-26GA4U

Back Shield

Sheet Spacer-A
(PSPAZA484WJZZ)

Sheet Spacer-S
(PSPAZA536WJZZ)

27

26" LCD Panel Unit

28

29

Sheet Spacer-S

Sheet Spacer-B
(PSPAZA535WJZZ)

Diffusion Panel
(PCOVUA026WJZZ)

Diffusion Sheet

(PSHEPA166WJZZ)
Prism Sheet
(PSHEPA165WJZZ)

Reflection/deflection Sheet
(PSHEPA164WJZZ)

29

Lamp Unit
(KLMP-A026WJZZ)

Lamp Holder (Top)
(CHLDZA328WJ01)

17

LC-26GA4D
LC-26GA4U

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.
CPU unit: DUNTKC427FE13
DVI/HDMI unit: DUNTKC267FE24

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

The model employs the following software.

» Main software
» Monitor microprocessor software (Display)
» Card microprocessor software

The main software and the monitor microprocessor software can be upgraded by using a general-purpose SD
memory card.
The card microprocessor software can be upgraded by using a PC card. The followings are the procedures
for upgrading, explained separately for each of the main software, the monitor microprocessor software and
the card microprocessor software.

2-2 Main software version upgrade

Get ready before you start

» SD memory card of 8MB 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.html)

18

LC-26GA4D
LC-26GA4U

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.

19

LC-26GA4D
LC-26GA4U

How to upgrade the software

1 Shut off the AC power (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.

4 After the unit startup, the system upgrade screen as shown below appears within 10-20 seconds.

<SYSTEM UPGRADE>

Program OK NG

EEPROM

OK NG

12 %

US

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>

Program OK NG

100 %

EEPROM

OK NG

US

Ver 1.07(U 2004/04/01 2)

20

LC-26GA4D
LC-26GA4U

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>

Program OK NG

100 %

EEPROM

Ver 1.07(U 2004/04/01 2)

OK NG

US

7 Shut 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).

21

LC-26GA4D
LC-26GA4U

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.

2-4 Card microprocessor software version upgrade

Get ready before you start
* CF (Compact Flash) of 8MB or higher capacity

* PCMCIA adapter for CF
* PC with PCMCIA slot running on Windows 98/98SE/ME/2000/XP operating system

Creating the PC card for version upgrade

Formatting the PC card

1 Insert the PC card into the PC card slot.
2 Open [My Computer] window, choose the relevant drive (e.g. H drive) and right-click it.
3 Select [Format] in the menu.
4 Under the file system, there are [FAT32] and [FAT] options. Select [FAT], and click [Start].
5 A dialog box requesting your confirmation appears. Click [OK].
6 Wait until the formatting is over. Then click [OK].

After this, click [Close].

Creating a new "boot" folder directly under the card root directory

1 * Create H:¥boot if the card is in H:¥drive.
2 Click [File], point to [Rename], and click [Folder].
3 Rename the folder as [boot].

Copying the version upgrade file to the PC card

Using a drag-and-drop action, copy the "aqb5cu.img" (temporarily named) file for version upgrade to the "boot"
folder.

Removing the PC card

1 Click [Safely removing hardware] in the task bar, select [PCMCIA IDE/ATAPI Controller], and click [Stop].
2 Select PC card in [Stop hardware device], and click [OK].
3 After confirming that you can safely remove the hardware, remove the PC card.

Now the PC card for version upgrade is ready.

22

LC-26GA4D
LC-26GA4U

How to upgrade the software
When you are done with the version upgrade, check the software version information in the adjustment process

mode.
1 Turn off the power. Insert the PC card into the slot of the set, which was prepared in the above "Creating

the PC card for version upgrade".

2 Turn on the power.
3 Wait until the process ends (about 2 minutes). Entering the card mode is not necessary.

* In case the card mode is entered, nothing appears on the screen for about 50 seconds after power-on.

"Card error" is displayed on the screen.

The action has ended successfully when the display is replaced by "Loading from the card".

*If the action has failed, turn off the power and repeat the steps 1 thru 3.

23

LC-26GA4D
LC-26GA4U

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) 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 "VOL (–)" and "INPUT" keys should be pressed and held until the display appears.)
The letter “K” appears on the screen.

(3) Next, hold down the "VOL (–)" and "CH (Ù)" keys at a time.

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.

(4) 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 Input switching (toggle switching)

(TV→INPUT1→INPUT2→INPUT3→INPUT4→
INPUT5→CARD)

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

(3) Currently selected input

(4) Current color TV system

(5) Destination

1/15

MAIN Version
CARD Version

Monitor Version
EQ DATA CHECKSUM

STANDBY CAUSE
FAN STATUS

[INFO]

TUNER

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

1.XX

3.XX
A15E
a

ROTATE

N358

24

USA

Adjustment process menu header

(7) Parameters

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.)

1 [INFO]

1 MAIN Version
2 CARD Version Card unit version Card unit microprocessor software version
3 Monitor Version Monitor version Obtained from the monitor. (Displays panel size and type as well.)
4 EQ DATA CHECKSUM Audio data checksum Audio data checksum display
5 STANDBY CAUSE Standby cause Last status which caused standby
6 FAN STATUS Fan

2 [INIT]

1 INDUSTRY INIT
2 HOTELMODE Hotel mode settings
3 Center Acutime
4 RESET Reset
5 BacklightAcutime
6 RESET Reset
7 VIC XPOS
8 VIC YPOS

9 VIC COLOR
10 VIC SIGNAL_TYPE
11 VIC READ

3 [N358MAIN]

1 N358 ALL ADJ N358MAIN+SUB+TUNER Auto N358 Main, Sub and Tuner DAC adjustments

2 N358 MAIN ADJ Auto ALL Auto N358 Main video adjustment

3 N358 SUB ADJ Auto ALL Auto N358 Sub video adjustment

4 TUNER DAC ADJ IC400

5 N358 MAIN CONTRAST IC400 Contrast

6 N358 MAIN Cb GAIN IC400 Cb gain

7 N358 MAIN Cr GAIN IC400 Cr gain

8 N358 SUB CONTRAST IC500 Contrast

9 N358 SUB Cb GAIN IC500 Cb gain
10 N358 SUB Cr GAIN IC500 Cr gain
11 TUNER A DAC TUNER-A DAC Tuner DAC
12 TUNER B DAC TUNER-B DAC Tuner DAC

4 [N358SUB]

1

TUNER VCHIP TEST(69ch)
2 N358 SUB CONTRAST IC500 N358 Sub video contrast
3 N358 SUB Cb GAIN IC500 Cb gain
4 N358 SUB Cr GAIN IC500 Cr gain
5

TUNER VCHIP TEST(10ch)
6

TUNER VCHIP TEST(15ch)

5 [COMP15KMAIN]

1 COMP15K ALL ADJ Auto ALL Auto COMP15K Main + Sub adjustments
2 COMP15KAD MAIN ADJ Auto ALL Auto COMP15K Main video adjustment
3 COMP15K MAIN ADJ Auto ALL
4

COMP15K MAIN CONTRAST
5 COMP15K MAIN Cb GAIN IC400 Cb gain
6 COMP15K MAIN Cr GAIN IC400 Cr gain
7 COMP15K Y OFFSET
8 COMP15K Cb OFFSET
9 COMP15K Cr OFFSET

10

COMP15K SUB CONTRAST

11 COMP15K SUB Cb GAIN IC500 Cb gain
12 COMP15K SUB Cr GAIN IC500 Cr gain

6 [COMP15KSUB]

1 COMP15K SUB ADJ Auto ALL Auto COMP15K Sub video adjustment
2

COMP15K SUB CONTRAST
3 COMP15K SUB Cb GAIN IC500 Cb gain
4 COMP15K SUB Cr GAIN IC500 Cr gain

7 [HDTV]

1 HDTV ADJ Auto HDTV video adjustment
2 CONTRAST IC3700 Contrast
3 Cb GAIN IC3700 Cb gain
4 Cr GAIN IC3700 Cr gain
5 HDTV Y OFFSET
6 HDTV Cb OFFSET
7 HDTV Cr OFFSET

Main microprocessor version

Initialization to factory settings

Accumulated AVC operation time

Accumulated monitor operation time

Auto ALL

IC400 Contrast

IC500 Contrast

IC500 Contrast

Version display

Initialization to factory settings

Reset by initialization

Not reset by initialization

LC-26GA4D
LC-26GA4U

25

LC-26GA4D
LC-26GA4U

8 [DVI ANALOG]

1 DVI ANALOG Auto DVI analog 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

9 [DVI DIGITAL]

1 DVI DIGITAL Auto DVI digital video adjustment
2 CONTRAST IC3700 Contrast
3 R CUTOFF
4 G CUTOFF
5 B CUTOFF
6 R DRIVE
7 G DRIVE
8 B DRIVE

10 [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

11 [M GAMMA 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 GAMMA 6
7 GAMMA WRITE
8 GAMMA RESET

12 [M GAMMA 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 B GAMMA 6
7 GAMMA WRITE
8 GAMMA RESET

13 [M GAMMA 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
8 GAMMA RESET

14 [PATTERN]

1 CVIC PATTERN
2 GPU PATTERN

15 [ETC]

1 EEP SAVE
2 EEP RECOVER
3 CARD REC INPUT
4 STANDBY CAUSE RESET

CVIC-generated internal pattern display
SEINE-generated internal pattern display

Storage of adjustment value
Retrieval of adjustment value
Permission of card recording by external input source

CVIC internal pattern display
SEINE internal pattern display

Saving adjustment value in storage area
Retrieving adjustment value from storage area

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6. Special features

* STANDBY CAUSE (Page 1/15)

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 15/15)

Storage of EEP adjustment value

* EEP RECOVER (Page 15/15)

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 level

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

: 0.7Vp-p ± 0.02Vp-p

: 0.7Vp-p ± 0.02Vp-p

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(2) Entering the adjustment process mode

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

(3) N358 composite signal adjustment (Main, Sub and Tuner)

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment N358 signal

US-10ch

2 Auto adjustment Page 3/15

performance

Feed the NTSC split field color bar signal (75% color saturation) to INPUT
1 input.
Feed the RF signal (by use of US-10ch) to TUNER-A and TUNER-B.

[Video input signal] [US-10CH]

↑100% white ↑100% white

Bring the cursor on [ËN358 ALL ADJ] and press [ENTER].
[ËN358 ALL ADJ FINISH] appears when finished.

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(4) Component 15K signal adjustment (Main and Sub)

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment 480i signal

Feed the 100% color bar signal to VIDEO 1 component input.

↑100% white

2 Auto adjustment Page 5/15

performance

(5) Component 33K signal adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment 1080i signal

2 Auto adjustment Page 7/15

performance

(6) DVI-I (analog) signal adjustment

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

Feed the 100% color bar signal to VIDEO 1 component input.

↑100% white

Bring the cursor on [ËHDTV ADJ] and press [ENTER].
[ËHDTV ADJ FINISH] appears when finished.

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment DVI-I (analog)

2 Auto adjustment Page 8/15

performance

Feed the 100% white 1/2 window pattern signal to DVI-I (analog) input.

1/4

1/2

1/4

1/4

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

1/2

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100% White

0% Black

1/4

(7) DVI-I (digital) signal adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment DVI-I (digital)

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Feed the 100% white 1/2 window pattern signal to DVI-I (digital) input.

1/4

2 Auto adjustment Page 9/15

performance

1/2

1/4

1/4

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

1/2

1/4

100% White

0% Black

8. White balance adjustment

Start the set and perform a white balance adjustment on the display.

» Procedure
» Bring up the adjustment screen (High side: 200 gradations, Low side: 48 gradations).
» Adjust [R GAMMAL], [G GAMMAL] and [B GAMMAL] so that 48-gradation pattern becomes normal.

* Adjust the chromaticity of the Low pattern (on the right of the display) so that it is set to x=0.284 and

y=0.292.
» Adjust [R GAMMAH], [G GAMMAH] and [B GAMMAH] so that 200-gradation pattern becomes normal.
* Adjust the chromaticity of the High pattern (on the left of the display) so that it is set to x=0.284 and

y=0.292.

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 2/15.
Set to [ON] using [VOL] key, and press [ENTER] to execute the
initialization.
When the initialization is complete, the adjustment process mode screen is
automatically replaced by the TV's 1ch screen.
* 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. Password data

4. Operation time

5. Maker's optional setting

6. Auto installation flag

7. V-CHIP block setting

After the adjustment, cancel the adjustment process mode.
To exit the adjustment process mode, 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.)

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10. Display adjustment procedure

1. Adjusting procedure
Entering the adjustment process mode → COM BIAS adjustment

2. 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 menu video adjustment.

(2) 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 "INPUT" keys should be pressed and held until the display
appears.)
The letter "K" appears on the screen.

(3) Next, press the remote controller key (VOL, CH, etc.).

Multiple lines of red 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.

(4) 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.

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

ENRER
INPUT
CH_UP

CH_DOWN

VOL_UP

VOL_DOWN

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 patterm off
Moving to the next page
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)

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
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

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