Sharp TU-GA1U-S,TU-GAD Service Manual

TU-GA1U-S
TU-GAD

SERVICE MANUAL

MODELS

LCD COLOUR TELEVISION

(AVC System)

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

Page

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

» SPECIFICATIONS ......................................................................................................................................5

» OPERATION MANUAL ...............................................................................................................................6

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

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

» ADJUSTMENT PROCEDURE..................................................................................................................16

» TROUBLESHOOTING TABLE ................................................................................................................. 25

» HOW TO UPGRADE THE INTERNAL PROGRAM ..................................................................................36

» CHASSIS LAYOUT ...................................................................................................................................41

» OVERALL WIRING DIAGRAM .................................................................................................................44

» MAIN BLOCK DIAGRAM ..........................................................................................................................48

» CPU BLOCK DIAGRAM ...........................................................................................................................50

» POWER BLOCK DIAGRAM .....................................................................................................................52

» DESCRIPTION OF SCHEMATIC DIAGRAM ...........................................................................................54

» SCHEMATIC DIAGRAM ...........................................................................................................................55

» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................... 123

» PARTS LIST ........................................................................................................................................... 152

» PACKING OF THE SET ......................................................................................................................... 185

SHARP CORPORATION

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

S44R6TU-GA1US

TU-GA1U-S
TU-GAD

2

TU-GA1U-S
TU-GAD

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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 " 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.

CAUTION: FOR CONTINUED
PROTECTION AGAINST A RISK OF
FIRE REPLACE ONLY WITH SAME
TYPE FUSE.
F701 (2A, 250V), F702 (1A, 250V)

WARNING

1. For continued safety, no modification of any circuit
should be attempted.

2. Disconnect AC power before servicing.

BEFORE RETURNING THE RECEIVER
(Fire & Shock Hazard)

Before returning the receiver to the user, perform
the following safety checks:

1. Inspect all lead dress to make certain that leads are
not pinched, and check that hardware is not lodged
between the chassis and other metal parts in the
receiver.

2. Inspect all protective devices such as non-metallic
control knobs, insulation materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacitor networks, mechanical
insulators, etc.

3. To be sure that no shock hazard exists, check for
leakage current in the following manner.

» Plug the AC cord directly into a 110~240 volt AC outlet.
» 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.

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:

DVM

AC SCALE

1.5k ohm
10W

TO EXPOSED
METAL PARTS

CONNECT TO
KNOWN EARTH
GROUND

0.15 µF

TEST PROBE

A V

3

TU-GA1U-S
TU-GAD

PRECAUTION: POUR LA

PROTECTION CONTINUE CONTRE
LES RISQUES D'INCENDIE,
REMPLACER LE FUSIBLE
F701 (2A, 250V), F702 (1A, 250V)

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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

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.

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.

AVERTISSEMENT

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

2. Débrancher le récepteur avant toute réparation.

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 110-240V. (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.
Toutes 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.

DVM

ECHELLE CA

1.5k ohm
10W

0.15 µF

SONDE D'ESSAI

AUX PIECES
METALLIQUES
EXPOSEES

BRANCHER A UNE
TERRE CONNUE

A V

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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:

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.

Indicates lead-free solder of tin, silver and copper.

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

L Fa

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TU-GA1U-S
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SPECIFICATIONS

Item

TU-GA1U-S /TU-GAD (AVC System)

Terminals

AV in, COMPONENT in

INPUT 2 AV in, COMPONENT in

INPUT 4

HDMI in

ANTENNA

75 Ω Unbalance, F Type for VHF/UHF/CATV in m 2, out m 1

INPUT 3 S-VIDEO in, AV in

OSD language English/French/Spanish

Power Requirement

AC 110-240 V, 50/60 Hz

48W (0.4W Standby with AC 120 V)

Weight

14.8 lbs./6.7 kg (w/o stand), 15.2 lbs./6.9 kg (with stand)

Accessories Operation manual ( 1), Remote

control unit ( ××1), System cable ( × 1),

AC cord ( × 2), "AAA" size battery

( ××2), AVC system stand unit ( × 1),

RF cable ( 1)

Rear INPUT 1

Front

Monitor Out S-VIDEO out, AV out

Headphones

Ø 3.5mm jack

CENTER
CHANNEL
INPUT

RCA pin

4 Ω 10W (L/R)SPEAKER-B

INPUT 5 Audio in, DVI-I in

Power Consumption

Specifications are subject to change without prior notice.

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TU-GA1U-S
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OPERATION MANUAL

Part names

Front view

RESET*

POWER button

INPUT 3 terminal (S-VIDEO)

INPUT 3 terminal (VIDEO)

SYSTEM RESET**

INPUT 3 terminals (AUDIO L/R)

AVC System

Rear view

Antenna (A)

input terminal

Antenna (B)

input ter

minal

Antenna (A)

output terminal

How to open the door.

STANDBY/ON indicator

* Press RESET if the system 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 picture resets to normal

• Audio setting initializes

• Dolby virtual resets to Off

• Image position initializes

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

NOTE

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

• Pressing RESET will not delete channel preset or secret number. See page 82 for clearing the secret number when you

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

Headphone

(When connecting headphones, the sound from the speakers is muted.)

DC OUTPUT

terminal

(Terminal for expanded

functionality in the near future.)

EXTERNAL SPEAKER terminals

PC CARD slot

CARD indicator

INPUT 1 COMPONENT

video terminals (Y, P

B

, P

R

)

INPUT 2 COMPONENT

video terminals (Y, P

B

, P

R

)

MONITOR OUTPUT terminal (S-VIDEO)

DISPLA

Y OUTPUT 1 terminal

DISPLAY

OUTPUT 2

terminal

AC INPUT

terminal

RS-232C

terminal

MONITOR OUTPUT terminals (AUDIO L/R)

INPUT 2 terminal (VIDEO)

INPUT 2 terminals (AUDIO L/R)

INPUT 1 terminal

(VIDEO)

INPUT 1 terminals (AUDIO L/R)

MONITOR OUTPUT terminal (VIDEO)

DISPLAY OUTPUT 3 terminal

Input 5 terminal

(AUDIO)

INPUT 5 terminal (DVI-I)

INPUT 4

terminal

(HDMI)

CENTER CHANNEL INPUT

Remote control unit

NOTE

• When using the remote control unit, point it at the Liquid

Crystal Television.

3

2

115

5

6

4

7

18

16

17

19

20

1

2

10 24

25

26

12

11

27

13

14 29

23

28

1 TV POWER: Switch the Liquid Crystal Television power

on or off.

2 DISPLAY: Display the channel information.

3 SOURCE POWER: Turns the power of the exter nal

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, VCR,

AUDIO, CBL/SAT and DVD operation. Indicator lights

up for the current mode.

16

: When pressed all buttons on the remote 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 Liquid

Crystal Television input source.

(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 ///: Select a desired 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.

(AV mode: STANDARD, MOVIE, GAME,USER, DYNAMIC

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

7

TU-GA1U-S
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Using external equipment

AVC System

(rear view)

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.

Audio cable (commercially available)

Component video cable

(commercially available)

When using component cable.

When using composite cable.

AV cable (commercially available)

DVD player

AVC System

(rear view)

ø 3.5mm stereo minijack cable

(commercially available)

When using DVI cable. (INPUT 5)

AVC System

(rear view)

DVI cable

(Commercially available)

DVD player

AVC System (rear view)

VCR

AV cable

(commercially available)

Connecting a VCR

You can use the INPUT 2 terminal when connecting a VCR and other audiovisual equipment.

AVC System (front view)

Game console/Camcorder

AV cable (commercially available)

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 ter

minal has priority over the video terminals.

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TU-GA1U-S
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Using external equipment

AVC System (rear view)

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)

Digital TV STB

AV cable

(commercially available)

Digital

TV STB

ø 3.5mm stereo minijack cable

(commercially available)

When using component cable.

When using composite cable.

AVC System (rear view)

When using DVI cab

le. (INPUT 5)

AVC System (rear view)

DVI cable

(Commercially available)

Connecting HDMI equipment

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

HDMI equipment

HDMI cable

(Commercially available)

AVC System (rear view)

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 Display.

INPUT SOURCE

TV

INPUT1

INPUT2

INPUT3

INPUT4

INPUT5INPUT5

CARD

1

Press MENU and the MENU screen 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

Caption Setup

Audio Only

Quick Shoot

[Fixed]

[Off]

HDMI Setup

[Auto]

[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.

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Using external equipment

AVC System (rear view)

ø 3.5 mm stereo minijack cable

(commercially available)

PC with analog RGB 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)

RGB/DVI conversion cable

(Commercially available)

PC with DVI terminal

Rear view

Connecting external speakers

When using external speakers

• Change the speaker setting to 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

Push down

the tab.

Insert the

end of the

cable.

Lift the tab

back up.

1

2

3

10

TU-GA1U-S
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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

RS-232C port specifications

Return codeCommand 4-digits Parameter 4-digits

PC Control of the System

• When a program is set, the Display 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 Display’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

Command format

Communication procedure

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

The display 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” r

eturns. (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

????

?

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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

I CRD

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

Appendix

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

Basic adjustment settings

AV input mode menu items

List of AV menu items to help you with

operations

OPC

Brightness

Contrast

Black Level

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

12

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DIMENSIONS

1423/64(365)

1159/64(303)

821/32(220)159/64(49)

3

/

16

(5)

1659/64(430)

3

47

/

64

(95)

5

/64(2)

Unit: inch/(mm)

13

TU-GA1U-S
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REMOVING OF MAJOR PARTS

1. Remove the two lock screws from each of the right and left side covers, and detach the side covers by sliding
them backward.

2. Remove the five lock screws from the top cabinet, and detach the cabinet by sliding it backward.

3. Remove the lock screws from the bottom cabinet, and detach the cabinet by sliding it backward.

4. Remove the tow lock screws from the front panel, and detach the panel.

5. Remove the lock screws, four tuner nuts and six hexagon shaft screws from the rear chassis, and detach the rear
chassis.

6. Remove the DVI PWB.
6-1. Remove the four lock screws from the DVI PWB angle.
6-2. Remove the four lock screws from the DVI PWB.

Top Cabinet

Side Cover (left)

Side Cover (right)

2

1

1

2

2

2

6-1

5

5

5

5

5

5

Rear Chassis

DVI PWB Angle

DVI PWB

6-2

Front Panel

Bottom Cabinet

3

3

4

3

14

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7. Remove the DC/DC converter PWB, TMDS PWB and AUDIO I/F PWB.
7-1. Remove the three lock screws from the TMDS PWB angle.
7-1. Remove the four lock screws from the DC/DC converter PWB.
7-3. Remove the four lock screws from the TMDS PWB.
7-4. Remove the two lock screws from the AUDIO I/F PWB.

8. Remove the five lock screws from the power PWB.

9. Remove the AV PWB, AV SUB PWB and 1-bit amplifier PWB.
9-1. Remove the four lock screws from the AV PWB angle.
9-2. Remove the one lock screw from the AV SUB PWB.
9-3. Remove the two lock screws from the 1-bit AMP PWB.

7-2

DC/DC Converter PWB

TMDS PWB

TMDS PWB Angle

7-3

7-1

7-1

7-4

TMDS PWB Shield

AUDIO I/F PWB

Power PWB

8

9-2

9-1

9-3

9-1

AV PWB

AV PWB Angle

AV SUB PWB

1-bit Amp PWB

15

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10. Remove the PC card PWB.
10-1. Remove the three lock screws from the PC card PWB angle.
10-2. Remove the four lock screws from the PC card PWB.

11. Remove the cooling fan (small) and front terminal PWB.
11-1. Detach the cooling fan (small).
11-2. Remove the four lock screws from the front shield.
11-3. Remove the one lock screw from the front terminal PWB.

12. Remove the cooling fan (large), main PWB and CPU PWB.
12-1. Detach the cooling fan (large).
12-2. Remove the four lock screws from the main PWB.
12-3. Remove the two lock screws from the CPU PWB.
12-4. Remove the lock screw from the main PWB angle.

10-2

10-1

PC CARD PWB

PC CARD PWB Angle

Cooling Fan (small)

Front PWB

Front Shield

11-1

11-2

11-3

12-3

12-2

12-4

12-1

MAIN PWB

CPU PWB

MAIN PWB Angle

Cooling Fan (large)

MAIN PWB Shield

16

TU-GA1U-S
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ADJUSTMENT PROCEDURE

This section describes the adjustment procedures which should be followed after replacement of faulty PWB (unit),
with special emphasis on the precautions to be taken after replacement of Main Unit (DUNTKC619) or CPU Unit
(DUNTKC427).

[Replacement of faulty CPU Unit]

1. Adjustment data are stored in the Main Unit. Therefore, no adjustment is needed after replacement of the CPU Unit.

[Replacement of faulty Main Unit]

1. A new Main Unit has no adjustment data. Therefore, all items need to be adjusted.

[Replacement of faulty IC2102 inside Main Unit]

1. A new IC2102 has no adjustment data. However, the data stored in the CPU Unit are automatically recognized and
loaded. Therefore, no adjustment is necessary.

Important * Be sure to follow the step below.

[Precaution after PWB replacement or adjustment]

1. After replacement of PWB or adjustment of each part, set "KEY WRITE" to "ON" which is shown in the
adjustment OSD menu (Page 2/15). Then press "Enter" and reboot the system.

17

TU-GA1U-S
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[Precaution after adjustment] * Be sure to follow the step below.

1. After adjustment of each part, select "KEY WRITE" in the adjustment OSD menu (Page 2/15) and set it to "ON"
using the "VOL (+)/(–)" key. Then press "Enter" and reboot the system.

[Entering the process adjustment mode]

1) Connect the Display and the AVC system using the system cable. Plug the power cable of each unit into
a wall outlet.
Power up the system using the power switch of the remote controller or the main unit.

2) Enter the standby mode using the remote controller or the main unit switch. (Both the power LED of the
Display and that of the AVC system light up in red.)

3) Press "Power" switch of the Display and shut off the power.

4) While simultaneously pressing the "VOL (–)" key and "INPUT" key of the Display, press "Power" switch of
the Display and turn on the power.
(Keep pressing the "VOL (–)" and "INPUT" keys until the specific display appears on the screen.)
If you have failed (only the ordinary startup display appeared), try this step again.

5) Make sure that a K mark is displayed in the top left of the screen.

6) Simultaneously press the "VOL (–)" key and the "CH(Ù)" key of the Display.
Several blue text lines appearing on the screen indicate the successful entry into the process adjustment
mode.

[Exiting the process adjustment mode]

1) You can exit the process adjustment mode by pressing "Power" switch of the Display and shutting off the
power.

[Remote controller key operation]

Channel up/down keys: Moves selection line by line (up/down).
Volume up/down keys: Changes setting of the selected line (+1/-1).
Cursor up/down keys: Navigates the page (previous/next).
Cursor right/left keys: Changes setting of the selected line (+10/-10).
Input: Cycles the input.
(TUNER → BSD → INPUT1 → INPUT2 → INPUT 3 → INPUT4 → INPUT5)

Enter: Executes the functions.
* With the necessary input signals being fed, the input switches itself after the relevant adjustment gets

started. Supply the video and component signals to INPUT1.

[Others]

* Viewing factory settings (backup data)Select EEP RECOVER in the adjustment OSD menu (Page 12/12).
Using "VOL (+)/(–)" key, change the setting from "OFF" to "ON". Then press "ENTER" key.

Caution: Use due care in handling the information described here lest your users should know how to

enter the process adjustment mode. If the settings are tampered in this mode, unrecoverable
system damage may result.

18

TU-GA1U-S
TU-GAD

[Adjustment procedure]
* Before entering the process adjustment mode, press "TV Reset" switch on the AVC system. Or enter the TV

menu video adjustment mode, change the AVC position to "Dynamic" and execute "Reset" in the bottom of the
menu.

1) N358 signal adjustment [N358ALLADJ]

Adjusting point Adjusting conditions Adjusting procedure

1 Input signal setting

2 RF input/Video input

MAIN/SUB screen

• Contrast

• CB / CR GAIN

1) Using the input signal generator, feed the split field
color bar signal -- US10ch (193.25 MHz), RF
modulation -- to the tuner -A/-B.

• Color saturation 75%

• RF modulation 87.5%

• Bottom white window Vertical: 1/4V

2) Using the input signal generator, feed the full field
color bar signal to the Video 1 input terminal.

• Color saturation 75%

• Input signal should be 1.00 Vp-p (Sync - 100%

white) with 75Ω termination of the signal
generator video output.

1) Input signal setting

2) Video 1 input terminal
connection signal

1) Enter the process adjustment mode.

2) Bring the cursor on to [N358 ALL ADJ] on Page 3.

3) Press [ENTER] key of the remote controller. The
adjustment is done automatically.

Ë For each input, operate in the following order.

1) Video input: Bring the cursor on to [N358 MAIN
ADJ] and press [ENTER].

2) Video input: Bring the cursor on to [N358 SUB ADJ]
on Page 4 and press [ENTER].

3) RF input: Bring the cursor on to [TUNER DAC ADJ]
and press [ENTER].

Feed the signal adjusted as
above.

White 75%

White
100%

Yellow

Green

Red

Magenta

Cyan

Black

White

Yellow

Green

Red

Blue

Magenta

Cyan

Black

19

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TU-GAD

Adjusting point Adjusting conditions Adjusting procedure

1 Input signal setting

2 15K component signal

input

• Contrast

• CB / CR GAIN

• Y / CB / CR OFFSET

1) Using the input signal generator, feed the full field
color bar signal to the Video 1 input terminal.

• Color saturation 100%

• Input signal should be 1.00 Vp-p (Sync - 100%

white) with 75Ω termination of the signal
generator video output.

1) Enter the process adjustment mode.

2) Bring the cursor on to [COMP15K ALL ADJ] on
Page 5.

3) Press [ENTER] key of the remote controller. The
adjustment is done automatically.

Feed the signal adjusted as
above.

White

Yellow

Green

Red

Blue

Magenta

Cyan

Black

2) 15K component signal adjustment [COMP15KALLADJ]

Adjusting point Adjusting conditions Adjusting procedure

1 Input signal setting

2 HDTV component

signal input

• CONTRAST

• CB GAIN

• CR GAIN

• Y OFFSET

• PB OFFSET

• PR OFFSET

1) Using the input signal generator, feed the full field
color bar signal to the Video 1 component input
terminal.

• Color saturation 100%

• Input signal should be 1.00 Vp-p (Sync - 100%

white) with 75Ω termination of the signal
generator video output.

Video 1 component input
terminal connection signal

1) Enter the process adjustment mode.

2) Bring the cursor on to [HDTV ADJ] on Page 7.

3) Press [ENTER] key of the remote controller. The
adjustment is done automatically.

Feed the signal adjusted as
above.

White

Yellow

Green

Red

Blue

Magenta

Cyan

Black

3) HDTV component signal adjustment [HDTV ADJ]

Video 1 component input
terminal connection signal

20

TU-GA1U-S
TU-GAD

Adjusting point Adjusting conditions Adjusting procedure

1 Input signal setting

2 DVI input signal

1) Using the input signal generator, feed the window
pattern signal to the DVI input terminal (digital/
analog).

• White 100%, black 0%

• Input signal should be 0.7 Vp-p (DATA 255) with

75Ω termination of the signal generator video
output.

DVI input terminal
connection signal
(Digital/analog)

1) Enter the process adjustment mode.

2) Bring the cursor on to [DVI ANALOG] on Page 8.

3) Press [ENTER] key of the remote controller. The
adjustment is done automatically.

4) Bring the cursor on to [DVI DIGITAL] on Page 9.

5) Press [ENTER] key of the remote controller. The
adjustment is done automatically.

Feed the signal adjusted as
above.

4) DVI signal adjustment [DVI ANALOG / DVI DIGITAL]

100%

white

0%

5) Finishing the adjustment

• Exit the process adjustment mode. (Press "Power" switch of the Display and shut off the power.)
Reference: To adjust each item manually, refer to the remarks in the process adjustment mode list for the detail.

Bring the cursor on to the desired item, and make adjustment using the Volume key.

(Adjustments will be less precise.)
[Retrieval of factory settings]
Caution: Once the factory setting retrieval is performed, all user data including channel settings will be lost by initialization.

Take enough care when performing this function. (The adjustments made in the process adjustment mode
will remain intact.)

Adjusting point Adjusting conditions Adjusting procedure

1 Factory settings

1) Enter the process adjustment mode.

2) Bring the cursor on to [INDUSTRY INIT] on Page 2.

3) Using [VOL] key, set to [ON]. Press [ENTER] to
execute initialization.
When the initialization is over, the system exits the
process mode automatically and displays TV 1ch.

4) * Never shut off the power until the initialization is

complete.

21

TU-GA1U-S
TU-GAD

•

Process adjustment mode list

Page Line Item Description Remarks (adjustment detail, etc.)

1 [INFO]

1 MAIN Version

Main microprocessor version

Version display

2 CARD Version Card unit version Card unit

microprocessor

software version
3 Monitor Version Monitor version Taken from the monitor. (Panel size and type also displayed)
4 EQ DATA CHECKSUM

EQ DATA checing

Check the EQ DATA
5 STANDBY CAUSE Standby cause Last status which caused standby
6 FAN STATUS ROTATE

2 [INIT]

1 INDUSTRY INIT Factory settings Factory settings (common to factory settings of remote controller)

KEY WRITE Setting after PWB replacement and adjustment
HOTELMODE Prohibited
Center Acutime Total AVC operating hours
RESET
BacklightAcutime

Total monitor operating hours
RESET
VIC XPOS X-axis setting
VIC YPOS Y-axis setting
VIC COLOR Y/G, CB/B and CR/R settings
VIC SIGNAL_TYPE Singal setting adjustment
VIC READ Tum ON and press [ENETR], to get the setting displayed

3 [N358MAIN]

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

N358 MAIN ADJ Auto MAIN ADJ Auto N358 Main video adjustment
TUNER DAC ADJ Auto TUNER DAC Auto Tuner DAC adjustment
N358 MAIN CONTRAST IC400 Contrast adjustment
N358 MAIN Cb GAIN IC400 Cb gain adjustment
N358 MAIN Cr GAIN IC400 Cr gain adjustment
N358 SUB CONTRAST IC500 Sub contrast adjustment
N358 SUB Cb GAIN IC500 Sub Cb gain adjustment
N358 SUB Cr GAIN IC500 Sub Cr gain adjustment
TUNER A DAC TUNER-A DAC Tuner-A DAC adjustment
TUNER B DAC TUNER-B DAC Tuner-B DAC adjustment

4 1 N358 SUB ADJ Auto SUB ADJ Auto N358 Sub video adjustment

N358 SUB CONTRAST
N358 SUB Cb GAIN
N358 SUB Cr GAIN
TUNER TEST
TUNER VCHIP TEST(10ch) VCHIP TEST(10ch)
TUNER VCHIP TEST(15ch) VCHIP TEST(15ch)

5 [COMP15KMAIN]

1 COMP15K ALL ADJ Auto ALL Auto COMP15K Main + Sub adjustments

COMP15KAD MAIN ADJ Prohibited
COMP15K MAIN ADJ Auto ALL Auto COMP15K Main video adjustment
COMP15K MAIN CONTRAST

IC3700 Comp contrast adjustment
COMP15K MAIN Cb GAIN IC3700 Comp Cb gain adjustment
COMP15K MAIN Cr GAIN IC3700 Comp Cr gain adjustment
COMP15K Y OFFSET IC3700 Comp Y offset adjustment
COMP15K Cb OFFSET IC3700 Comp Cb offset adjustment
COMP15K Cr OFFSET IC3700 Comp Cr offset adjustment
COMP15K SUB CONTRAST

IC500 Comp sub contrast adjustment
COMP15K SUB Cb GAIN IC500 Comp sub Cb gain adjustment
COMP15K SUB Cr GAIN IC500 Comp sub Cr gain adjustment

6 [COMP15KSUB]

1 COMP15K SUB ADJ Auto ALL Auto COMP15K Sub video adjustment

COMP15K SUB CONTRAST
COMP15K SUB Cb GAIN
COMP15K SUB Cr GAIN

7 [HDTV]

1 HDTV ADJ Auto HDTV video adjustment

CONTRAST IC3700 Contrast adjustment
Cb GAIN IC3700 Cb gain adjustment
Cr GAIN IC3700 Cr gain adjustment
HDTV Y OFFSET IC3700 HD Comp Y offset adjustment
HDTV Cb OFFSET IC3700 HD Comp Cb offset adjustment
HDTV Cr OFFSET IC3700 HD Comp Cr offset adjustment

22

TU-GA1U-S
TU-GAD

8 [DVI ANALOG]

1 DVI ANALOG Auto DVI analog video adjustment (W/B adjustment)

R CUTOFF IC3700 R cutoff adjustment
G CUTOFF IC3700 G cutoff adjustment
B CUTOFF IC3700 B cutoff adjustment
R DRIVE IC3700 R drive adjustment
G DRIVE IC3700 G drive adjustment
B DRIVE IC3700 B drive adjustment

9 [DVI DIGITAL]

1 DVI DIGITAL Auto DVI digital video adjustment

CONTRAST IC3700 Contrast adjustment
R CUTOFF IC3700 R cutoff adjustment
G CUTOFF IC3700 G cutoff adjustment
B CUTOFF IC3700 B cutoff adjustment
R DRIVE IC3700 R drive adjustment
G DRIVE IC3700 R drive adjustment
B DRIVE IC3700 R drive adjustment

10 [M GAMMA]

1 MONITOR R GAMMA LO Monitor W/B adjustment

MONITOR G GAMMA LO
MONITOR B GAMMA LO
MONITOR R GAMMA HI
MONITOR G GAMMA HI
MONITOR B GAMMA HI
GAMMA WRITE
GAMMA RESET

11 [M GAMMA R]

1 MONITOR R GAMMA 1

MONITOR R GAMMA 2
MONITOR R GAMMA 3
MONITOR R GAMMA 4
MONITOR R GAMMA 5
MONITOR GAMMA 6
GAMMA WRITE
GAMMA RESET

12 [M GAMMA G]

1 MONITOR G GAMMA 1

MONITOR G GAMMA 2
MONITOR G GAMMA 3
MONITOR G GAMMA 4
MONITOR G GAMMA 5
MONITOR B GAMMA 6
GAMMA WRITE
GAMMA RESET

13 [M GAMMA B]

1 MONITOR B GAMMA 1

MONITOR B GAMMA 2
MONITOR B GAMMA 3
MONITOR B GAMMA 4
MONITOR B GAMMA 5
MONITOR B GAMMA 6
GAMMA WRITE
GAMMA RESET

14 [PATTERN]

1 CVIC PATTERN Prohibited

PU PATTERN Prohibited

15 [ETC]

EEP SAVE Prohibited
EEP RECOVER Recovery of process Retrieves the stored adjustment value

adjustment value

CARD REC INPUT Prohibited

23

TU-GA1U-S
TU-GAD

Ë

Manual adjustment

» First select Adjustment Items A and B. The adjustment points will be displayed at the top left.
» Then select Adjustment Items C and D. Set VIC READ to [ON] and press ENTER, and the adjustment data will

be displayed at top right.

» Finally switch to the adjustment page. Using the VOL (+)/(—) keys, go to the data and change the setting.

2 [INIT]

1 INDUSTRY INIT Factory setting

Factory setting (remote controller factory setting and common operation)
KEY WRITE Settings made after replacement and adjustment of PWB
HOTELMODE Prohibited
Center Acutime AVC total operating hours
RESET
BacklightAcutime

Monitor total operating hours

RESET

A VIC XPOS X-axis setting
B VIC YPOS Y-axis setting
C VIC COLOR Y/G, CB/B and CR/R settings
D VIC SIGNAL_TYPE Adjustment signal setting

VIC READ Turn ON and press ENTER to get the setting displayed.

INDUSTRY INIT
KEY WRITE
HOTELMODE
Canter Acutime
RESET
Backlight
RESET
VIC XPOS
VIC YPOS
VIC COLOR
VIC SIGNAL_TYPE
VIC READ

OFF
OFF
OFF
`H`M
OFF
`H`M
OFF
0
0
Y/G
N358MAIN
OFF

2/15 [INIT] INPUT1 N358 HDCP:ON JAPAN VIC[ 240]

Adjustment point

(1) Current page

(2) Current title

(3) Current input

(4) Current color system

(5) AVC HDCP key status (separate only)

(6) AVC destination

(7) Adjustment value (yellow)

Process menu header

Adjustment signal selected
Adjustment input signal
selected
Adjustment value GO

(8) Item name (9) Parameter display

24

TU-GA1U-S
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B/W

ADJ

Adjustment

[IRE]

reference data

CVBS Y 0/100 CONTRAST 234

CB/CR 75% Cb/Cr GAIN 198 Adjust with CB. Same value to CR.

2 RF 0/100 CONTRAST 234

3 NT-Comp Y 0/100 CONTRAST 245

PB/PR 100% Cb/Cr GAIN 240 Adjust with CB. Same value to CR.

4 HD-Comp Y 0/100 CONTRAST 245

PB/PR 100% PB/PR GAIN 240

PB/PR/ offset 0 PB/PR offset 0 Lower the setting to achieve 0.

(Note that the setting below "0" is not displayed.)

5 DVI-A R/G/B 100 WB adjustment 240

RGB offset 0 0 Lower the setting to achieve 0.

(Note that the setting below "0" is not displayed.)

6 DVI-D R/G/B 100 WB adjustment 240

RGB offset 0 0 Lower the setting to achieve 0.

(Note that the setting below "0" is not displayed.)

PC Card Unit Y No adjustment

PB/PR

Digital Unit Y No adjustment

PB/PR

25

TU-GA1U-S
TU-GAD

TROUBLE SHOOTING TABLE

No power supply (Front LED is not ON)

Is power cable properly connected to the main unit?

Is F701 normal?

Is F702 normal?

Reconnect the wire harness, FFC, etc. in the set, and repeat
the check.

Connect the power cable properly, and turn on the power.

Replace F701, and turn on the power. If the fuse is still
blown, replace VA701, D701, Q705 and Q706, and repeat

Replace F702, and turn on the power. If the fuse is still
blown, replace D701 and IC701, and repeat the check.

Remove the faulty part or short-circuit, and repeat the check.

Check IC902 and its peripheral

NO

NO

NO

Is there any faulty part or short-circuit in BU+5V line?

NO

NO

YES

YES

Is BU+5V line (pin (5) of P1701) normal?

YES

YES

YES

No power-up (Front LED does not change from red to green)

Are MDR (gray) and DVI (white) connectors of the system
cable properly connected to the Dispay and the AVC System?

Reconnect properly and turn on the power.

NO

Is the power switch of the monitor ON?

Set the power switch to ON, and turn on the power.

YES

NO

Is specified voltage available at S-Vcc+15V (pins (11) and
(12) of P1752), UR+10V (pin (5) of P1752) and CPU+10V
(pins (7) and (8) of P1781)?

Is specified voltage available at D+1.8VCV (pins (3) and (4)
of P1703), D+3.3V (pins (9) and (12) of P1701) and D+5V
(pin (1) of P1703)?

Reconnect the wire harness, FFC,
etc. in the set, and repeat the check.

Are PS_ON (pin (6) of P1701) and EU_D_POWER (pin (2) of
P1702) at "HI" (3V or higher)?

Are MOS-FET (Q1701, Q1702, Q1703, Q1704 and Q1705)
and IC952 normal?

Does OVP line voltage
fluctuate immediately after
the power is supplied?

Is specified impedance available in S-Vcc+15V, UR+10V and
CPU+10V lines? (Measure the resistance between each +B
line and GND.)

Check PS_ON or EU_D_POWER

Check the circuits in the faulty line.

Check D_POW line.

Is D_POW line normal? Are the pins
(46), (47) and (48) of IC1701 at "HI",
and the pin (5) of IC952 at "LOW"?

Replace faulty FET or IC.

YES

NO

NO

NO

YES

YES

YES

YES

NO

Replace IC1701.

YES

YES

NO

NO

NO

26

TU-GA1U-S
TU-GAD

TROUBLE SHOOTING TABLE (Continued)

No audio output (1)

No headphone audio output

Check between pins (26) and (27) (OUT
L/R) of IC2702 and HPAMP (IC2502), audio
mute (Q2501) and headphone terminal
(J2402), as well as their peripheral circuits.

NO

NO NO

NO

NO

NO

Is there normal audio output in IC2501
(Multi Sound Processor)?
Check pins (37) and (38) (SC10 OUT L/R)
of IC2501.

Check between pins (37) & (38) (SC10
OUT L/R) of IC2501 (Multi Sound
Processor) and pins (1) & (13) of monitor
switching IC1108.
Is there normal audio output for each?

Check between pins (1) & (13) of IC1108
and pins (2) & (5) of monitor audio output
terminal (J1105).

Check the headphone plug check circuit.
Check between headphone (pin (4) of
J2402) and pin (7) of IC1102.

No monitor audio output

Check if monitor audio output is set to
"variable" or if headphone is connected.

Is there normal audio output from the
main unit? Check pins (9) and (7) (L/R
OUT) of the connector (P1105).

Check between pins (9) & (7) (L/R OUT)
of P1105 and pins (1) & (13) of monitor
switching IC1108. Is there normal audio
output for each?

Check between pins (1) & (13) of IC1108
and pins (2) & (5) (Q1102, Q1103) of
monitor audio output terminal (J1105).

No BS monitor audio output

No audio output (2)

No audio output during BS reception

Are there normal audio outputs at pins
(33) and (34) (SC2 OUT L/R) of
IC2501 (Multi Sound Processor) to
pins (32) and (33) of IC2702?

No audio output during UHF/VHF
reception

Is the volume icon set on speaker
when volume key is operated?

If monitor output is set to "variable" in the
main menu, change the setting to "fixed".

Are there normal inputs and outputs
of I2S/LRCK, BICK, SDTO and SDTI
signals between IC2702 and IC2700
(DSP)?

Are there normal audio outputs at pins
(28) and (29) (AOUT L/R) of IC2702?

Check between pins (33) & (34)
(SC2 OUT L/R) of IC2501 (Multi
Sound Processor) and pins (32) &
(33) of IC2702.

Check IC2702 and its peripheral
circuits.

NO

Are there normal signal inputs at pin
(2) of IC3805 and pin (2) of IC3812
(AV SW)?

Check between pins (9) & (7) (L/R
OUT) of P1105 and pins (59) & (61)
of IC3800 (AV SW).

Are there normal signal inputs at pin
(3) of IC3805 and pin (3) of IC3812
(AV SW) to pins (56) and (57) of
IC2501 (Multi Sound Processor)?

Is there normal signal input at pin (67)
(SOUND IF1) of IC2501 (Multi Sound
Processor)?

NO

YES

YES

YES

YES

YES

YES

YES

NO

NO

NO

Are there normal audio outputs at pins
(28) and (29) of IC2702 to pins (13) and
(15) of P3801 (1-bit amplifier input)?

Check the circuits between pins (28) &
(29) of IC2702 and pins (13) & (15) of
P3801 (1-bit amplifier input.)

NO

Is relay switching done normally from
AUDIO I/F PWB P6003 to RY6001
(speaker switching) and RY6000
(speaker A/B switching)?

Check the 1-bit amplifier and its
peripheral circuits.

NO

Is the volume icon set on speaker
when volume key is operated?

Is there normal SIF output from
tuner? (Pin (14) of TU1101)

Check TU1101 (U/V tuner) and its
peripheral circuits.

NO

NO

NO

27

TU-GA1U-S
TU-GAD

TROUBLE SHOOTING TABLE (Continued)

No video output (1)

External input in trouble <Video 1>

Is Video 1 selected in the input switching

menu screen?

Are there digital video signal outputs at pins

(43), (44), (46), (47), (48), (49), (54), (55)

and (58) of IC400?

Are there digital video signal inputs at pins (51) thru (78) and (7) thru (10) of IC3201? (Signal pins only)

Are there digital video signal outputs at pins (39) thru (49) of IC3201? (Signal pins only)

Are there digital video signal outputs at pins (3) thru (16) of SC3200? (Signal pins only)

<Composite video signal input> Is there main video signal output at pin (60) of IC3800, or sub video signal output at pin (56)?

<Composite video signal input>

Is there signal input at pin (65)?

Is there signal input at each input pin of

IC3800 (AV SWITCH)?

Select Video 1 and the input signal in the input

switching menu screen.

If signal name is in gray and not selectable

in the menu screen

Check between pin (4) of J1103 and pin

(65) of IC3800.

Is composite video signal detection

functioning normally? Check between

J1103 and pin (9) of IC1102.

Is there signal input at each input pin of

IC400 (MAIN VIDEO DEC)?

<Composite video signal input>

Is there signal input at pin (85)?

Check IC 400 (MAIN VIDEO DEC) and its

peripheral circuits.

Check between IC401 and IC400.

External input in trouble <Video 2>

YES

YES

YES

YES

YES

YES

YES

YES

YES

NO

NO

NO

Check between IC501 and IC500.

NO

NO

Are there digital video signal outputs at pins

(43), (44), (46), (47), (48), (49), (54), (55)

and (58) of IC500?

Check IC500 (SUB VIDEO DEC) and its

peripheral circuits.

NO

Replace the main PWB, or check between

IC400/IC500 and IC3201.

NO

Check IC3201 (LV DSTx) and its peripheral

circuits.

Check between IC3201 and SC3200.

NO

NO

Select Video 2 and the input signal in the

input switching menu screen.

If signal name is in gray and not selectable

in the menu screen

Check between pin (8) of J1105 and pin

(71) of IC3800.

Check IC3800 (AV SWITCH) and its

peripheral circuits.

Is composite video signal detection

functioning normally? Check between

J1105 and pin (11) of IC1102.

NO

NO

NO

<Composite video signal input> Is there main video signal input at pin (2) of IC401, or sub video signal input at pin (2) of IC

501?

Check between IC3800 and IC401/IC501.

NO

No problem up to the main PWB. Check TMDS PWB.

Is Video 2 selected in the input switching

menu screen?

<Composite video signal input>

Is there signal input at pin (71)?

Is there signal input at each input pin of

IC3800 (AV SWITCH)?

YES

<Composite video signal> input

<Main video signal>

Is there signal input at each input pin of

IC500 (SUB VIDEO DEC)?

<Composite video signal input>

Is there signal input at pin (85)?

<Sub video signal>

28

TU-GA1U-S
TU-GAD

TROUBLE SHOOTING TABLE (Continued)

No video output (2)

External input in trouble <Video 3>

Is Video 3 selected in the input switching

menu screen?

Are there digital video signal outputs at pins

(43), (44), (46), (47), (48), (49), (54), (55)

and (58) of IC400?

Are there digital video signal inputs at pins (51) thru (78) and (7) thru (10) of IC3201? (Signal pins only)

Are there digital video signal outputs at pins (39) thru (49) of IC3201? (Signal pins only)

Are there digital video signal outputs at pins (3) thru (16) of SC3200? (Signal pins only)

No problem up to the main PWB. Check TMDS PWB.

<Composite video signal input> Is there main video signal input at pin (60) of IC3800, or sub video signal input at pin (56)?

<S-video signal input> Are there main Y-signal input at pin (60) and main C-signal input at pin (59) of IC3800, or sub Y-signal

input at pin (56) and sub C-signal input at pin (55)?

<Composite video signal input> Is there main video signal input at pin (2) of IC401, or sub video signal input at pin (2) of IC

501?

<S-video signal input> Are there main Y-signal input at pin (2) and main C-signal input at pin (6) of IC401, or sub Y-signal in

put at pin (2) and sub C-signal input at pin (6) of IC501?

<S-video signal input>

Are there Y-signal input at pin (5) and

C-signal input at pin (7)?

<Composite video signal input>

Is there signal input at pin (3)?

Is there signal input at each input pin of

IC3800 (AV SWITCH)?

Select Video 3 and the input signal in the

input switching menu screen.

If signal name is in gray and not selectable

in the menu screen

Check between pins (2) of J2404 and pins

(3) of IC3800.

Check between pins (3) & (4) of J2401 and

pins (5) & (7) of IC3800.

Is composite video/S-video signals detection

functioning normally? Check between J2404

and pin (12) of IC1102, and between J2401

and pin (6) of IC3800.

Is there signal input at each input pin of

IC400 (MAIN VIDEO DEC)?

<Composite video signal input>

Is there signal input at pin (85)?

<S-video signal input>

Are there Y-signal input at pin (85) and C-

signal input at pin (90)?

Check IC 400 (MAIN VIDEO DEC) and its

peripheral circuits.

Check between IC401 and IC400.

Check between IC401 and IC400.

YES

YES

NO

NO

NO

NO

NO

Check between IC501 and IC500.

Check between IC501 and IC500.

NO

NO

NO

YES

YES

YES

YES

YES

Check IC3800 (AV SWITCH) and its

peripheral circuits.

NO

Check between IC3800 and IC401/IC501.

NO

YES

YES

<Composite video signal / S-video signal> input

<Main video signal>

Are there digital video signal outputs at pins

(43), (44), (46), (47), (48), (49), (54), (55)

and (58) of IC500?

Is there signal input at each input pin of

IC500 (SUB VIDEO DEC)?

<Composite video signal input>

Is there signal input at pin (85)?

<S-video signal input>

Are there Y-signal input at pin (85) and C-

signal input at pin (90)?

Check IC500 (SUB VIDEO DEC) and its

peripheral circuits.

Replace the main PWB, or check between

IC400/IC500 and IC3201.

NO

NO

Check IC3201 (LV DSTx) and its peripheral

circuits.

NO

Check between IC3201 and SC3200.

NO

<Sub video signal>

29

TU-GA1U-S
TU-GAD

TROUBLE SHOOTING TABLE (Continued)

No video output (3)

Tuner-A (U/V) in trouble

Is there video signal output at pin (17) of

TU1101(video output)?

Is there signal input at pin (7) of IC1103?

Is there signal output at pin (5) of IC1103?

Is there signal input at pin (17) of IC3800

(AV SWITCH)?

Check the tuner and its peripheral circuits.

Check between the tuner and IC1103.

Check IC1103 and its peripheral circuits.

Check between IC1103 and IC3800.

Are there digital video signal outputs at pins

(43), (44), (46), (47), (48), (49), (54), (55)

and (58) of IC400?

Are there digital video signal inputs at pins (51) thru (78) and (7) thru (10) of IC3201? (Signal pins only)

Is there main video signal output at pin (60) of IC3800, or sub video signal output at pin (56)?

Is there main video signal input at pin (2) of IC401, or sub video signal input at pin (2) of IC501?

Are there digital video signal outputs at pins (39) thru (49) of IC3201? (Signal pins only)

Are there digital video signal outputs at pins (3) thru (16) of SC3200? (Signal pins only)

No problem up to the main PWB. Check TMDS PWB.

Is there signal input at each input pin of

IC400 (MAIN VIDEO DEC)?

<Component video Signal Input>

Is there signal input at pin (85)?

Check between IC401 and IC400.

Check IC400 (MAIN VIDEO DEC) and its

peripheral circuits.

NO

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

NO

NO

NO

Tuner-B (U/V) in trouble

Is there video signal output at (video output)

pin (17) of TU1102?

Is there signal input at pin (1) of IC1103?

Is there signal output at pin (3) of IC1103?

Is there signal input at pin (19) of IC3800

(AV SWITCH)?

Check the tuner and its peripheral circuits.

Check between the tuner and IC1103.

Check IC1103 and its peripheral circuits.

Check between IC1103 and IC3800.

NO

YES

YES

YES

YES

NO

NO

NO

NO

NO

Are there digital video signal outputs at pins

(43), (44), (46), (47), (48), (49), (54), (55)

and (58) of IC500?

Is there signal input at each input pin of

IC500 (SUB VIDEO DEC)?

<Component video Signal Input>

Is there signal input at pin (85)?

Check between IC501 and IC500.

Check IC500 (SUB VIDEO DEC) and its

peripheral circuits.

NO

NO

YES

YES

Check IC3800 (AV SWITCH) and its

peripheral circuits.

NO

Check between IC3800 and IC401/IC501.

NO

<Tuner U/V> input

<Main video signal>

Replace the main PWB, or check between

IC400/IC500 and IC3201.

NO

Check IC3201 (LV DSTx) and its peripheral

circuits.

NO

Check between IC3201 and SC3200.

NO

<Sub video signal>

30

TU-GA1U-S
TU-GAD

TROUBLE SHOOTING TABLE (Continued)

No video output (4)

External input in trouble <Video 1>

Is Video 1 selected in the input switching

menu screen?

Are there digital video signal outputs at

each output pin (AD_***) of IC3700 (ADC)?

Are there digital video signal inputs at pins (51) thru (78) and (7) thru (10) of IC3201? (Signal pins only)

Are there digital video signal outputs at pins (39) thru (49) of IC3201? (Signal pins only)

Are there digital video signal outputs at pins (3) thru (16) of SC3200? (Signal pins only)

Are there main video signal outputs at pins (46), (48) and (50) of IC3801, sub video signal outputs at pins (40), (42) and (44)

, and pass video signal

outputs at pins (34), (36) and (38)?

<Component video signal input>

Are there signal inputs at pins (53), (55)

and (57)?

Is there signal input at each input pin of

IC3801 (CHROM SWITCH)?

Select Video 1 and the input signal in the input

switching menu screen.

If signal name is in gray and not selectable

in the menu screen.

Check between pins (7), (14) and (20) of

J1103 and each input pin of IC3800.

Is Component signals detection functioning

normally? Check between J1103 and pin

(30) of SC3802.

Is there signal input at each input pin of

IC3700 (ADC)?

Are there signal inputs at pins (5), (13) and

(20)?

Check IC3700 (ADC) and its peripheral

circuits.

Check between IC3703 and IC3700.

External input in trouble <Video 2>

YES

NO

NO

Is Video 2 selected in the input switching

menu screen?

<Component signal input>

Are there signal inputs at pins (5), (7), (9)?

Is there signal input at each input pin of

IC3801 (CHROM SWITCH)?

Select Video 2 and the input signal in the input

switching menu screen.

If signal name is in gray and not selectable

in the menu screen

Check between pins (3), (6), (9), of J1105

and each input pin of IC3801.

Is Component signals detection functioning

normally? Check between J1105 and pin

(76) of IC3800.

YES

YES

YES

YES

YES

YES

YES

YES

NO

NO

Check between IC501 and IC500.

NO

NO

Are there digital video signal outputs at pins

(43), (44), (46), (47), (48), (49), (54), (55)

and (58) of IC500?

Check IC500 and its peripheral circuits.

NO

Replace the main PWB, or check between

IC3700/IC500 and IC3201.

NO

Check IC3201 (LV DSTx) and its peripheral

circuits.

Check between IC3201 and SC3200.

NO

NO

Check IC3801 (CHROM SWITCH) and its

peripheral circuits.

NO

<Main Video Signal> Are there pass signal inputs at pins (1), (5) and (25) of IC3703?

<Sub Video Signal (525I)> Are there sub signal inputs at pins (8), (10) and (13) of IC501?

Check between IC3801 and IC3703, and

between IC3801 and IC501.

NO

No problem up to the main PWB. Check TMDS PWB.

<Component video signal> input

<Main Video Signal>

Is there signal input at each input pin of

IC500 (SUB VIDEO DEC)?

<Sub video signal input>

Are there signal inputs at pins (85), (92)

and (94)?

<Sub Video Signal (525I)>