Sharp LC-15AV6U, LC-15S5U, lc-20av6u Service Manual

LC-15AV6U

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.

MODEL

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

LCD COLOR TELEVISION

CONTENTS

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

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

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

» DIMENSIONS ...............................................................................................................................................8

» REMOVING OF MAJOR PARTS .................................................................................................................. 9

» ADJUSTING PROCEDURE OF EACH SECTION .....................................................................................12

» PUBLIC MODE SETTING PROCEDURE ..................................................................................................22

» TROUBLESHOOTING TABLE ....................................................................................................................27

» MAJOR IC INFORMATIONS ......................................................................................................................30

» BLOCK DIAGRAM ......................................................................................................................................32

» OVERALL WIRING DIAGRAM ................................................................................................................... 34

» DESCRIPTION OF SCHEMATIC DIAGRAM .............................................................................................36

» SCHEMATIC DIAGRAM

ËLED/HP Unit.............................................................................................................................................37

ËMAIN Unit.................................................................................................................................................38

ËSUB Unit ..................................................................................................................................................52

» PRINTED WIRING BOARD ASSEMBLIES ................................................................................................66

» REPLACEMENT PARTS LIST .................................................................................................................... 80

» PA CKING OF THE SET ..............................................................................................................................91

Page

LC-15AV6U

N46A5LC15AV6U

2

LC-15AV6U

CAUTION: FOR CONTINUED

PROTECTION AGAINST A RISK OF
FIRE REPLACE ONLY WITH SAME
TYPE F6700 (1.6A, AC250V), F6702
(1.6A, AC250V), F7701 (3.15A, 250V)
AND F7702 (5A, 250V) FUSE.

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3

SAFETY NOTICE

Many electrical and mechanical parts in LCD television
have special safety-related characteristics.
These characteristics are often not evident from visual
inspection, nor can protection afforded by them be
necessarily increased by using replacement components
rated for higher voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical
components having such features are identified by "å"

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:

and shaded areas in the

Replacement Parts Lists

and

Schematic Diagrams

.
For continued protection, replacement parts must be
identical to those used in the original circuit.
The use of 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.

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 120 volt AC outlet, and
connect the DC power cable into the receiver's DC jack.
(Do not use an isolation transformer for this test).

• Using two clip leads, connect a 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 0.75V peak (this corresponds to 0.5 mA.
peak AC.) or more is excessive and indicates a potential
shock hazard which must be corrected before returning
the monitor to the owner.

DVM

AC SCALE

1.5k ohm
10W

TO EXPOSED
METAL PARTS

CONNECT TO
KNOWN EARTH
GROUND

0.15 µF

TEST PROBE

A V

3

LC-15AV6U

PRECAUTION: POUR LA

PROTECTION CONTINUE
CONTRE LES RISQUES
D'INCENDIE, REMPLACER LE
FUSIBLE PAR UN FUSIBLE DE
MEME TYPE F6700 (1.6A,
AC250V), F6702 (1.6A, AC250V),
F7701 (3.15A, 250V) et F7702 (5A,
250V).

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AVIS POUR LA SECURITE

De nombreuses pièces, électriques et mécaniques, dans
les téléviseurs de l'afficharge à cristaux liquides
présentent des caractéristiques spéciales relatives à la
sécurité.
Ces caracténstiques 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
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 ou autres accidents.

DVM

ECHELLE CA

1.5k ohm
10W

0.15 µF

SONDE D'ESSAI

AUX PIECES
METALLIQUES
EXPOSEES

BRANCHER A UNE
TERRE CONNUE

A V

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

Ë

La réparation ne peut être effectuée que par un technicien spécialisé qui s'est parfaitement
accoutumé à toute vérification de sécurité et aux conseils suivants.

AVERTISSEMENT

1. Pour la sécurité continue, n'entreprendre aucune
modification de tout circuit.

2. Débrancher l'alimentation CA avant la réparation.

AVANT DE RENDRE LE RECEPTEUR A
L’UTILISATEUR (Incendie et choc électrique)

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 résistance-capacité,
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 1.5kΩ 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 CA 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 doit être utilisée
dans le but de terminer ces vérifications.)
La tension de pointe mesurèe ne doit pas dépasser 0.
75V (correspondante au courant CA de pointe de 0.
5mA). Dans le cas contraire, il y a une possibilité de
choc électrique qui doit être supprimée avant de rendre
le récepteur au client.

4

LC-15AV6U

Precautions for using lead-free solder

1 Employing lead-free solder

"All 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

5

LC-15AV6U

SPECIFICATIONS

As a part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improve­ment without prior notice. The performance specification figures indicated are nominal values of production units. There may be some
deviations from these values in individual units.

Model

Items

LCD panel 15" Advanced Super View

& BLACK TFT LCD
Number of dots 921,600 dots VGA
Video color systems N358

TV Standard (CCIR) NTSC

TV function

TV Tuning System PLL 181 ch.
STEREO MTS+SAP
CATV 125 ch.

Brightness 430 cd/m

2

Viewing angles H: 170° V: 170°
Audio amplifier 1.0 W 2
Speakers 113/20 41/3in. (42 110 mm), 2 pcs

INPUT1 COMPONENT-IN, AUDIO-IN
INPUT2 VIDEO-IN, S-VIDEO-IN, AUDIO-IN

Terminals INPUT3/OUTPUT VIDEO-IN, AUDIO-IN / VIDEO-OUT, AUDIO-OUT

Antenna F-Type

Headphone Mini-jack for stereo (ø3.5 mm)
OSD language English/Spanish/French
Power supply AC 120V, 60Hz
Power consumption

Weight

Display only

Display with stand

50 W (0.8 W standby): AC 120V

8.8 lbs./ 4.0 kg

10.0 lbs./ 4.5 kg

Operating temperature +32°F to +104°F (0°C to +40°C)

LC-15AV6U

6

LC-15AV6U

OPERATION MANUAL

Part Names of Main Unit

The examples used throughout this manual are based on the LC-20AV6U model.

• INPUT, CH ( )/( ), VOL (–)/(+) and MENU on the main unit have the same functions as the same buttons on the remote control.

Fundamentally, this operation manual provides a description based on operation using the remote control.

Listening with Headphones

Plug the headphone mini-plug into the headphone jack

located on the side of the LCD TV set.

Adjust the sound volume using VOL (+)/(–) on the remote

control.

On-screen display

20

VOLUME

NOTE

NOTE

• Headphones are not included in the supplied accessories.

• No sound is heard from the main unit speakers when a

headphone mini-plug is connected into the headphone jack.

• Do not set the volume at a high level. Hearing experts advise

against extended listening at high volume levels.

Controls

SLEEP TIMER indicator

The SLEEP TIMER indicator lights up red when the

SLEEP TIMER is set to “ON”.

The POWER indicator lights up green

when the power is on, and red when in the

standby mode (the indicator will not light

up when the main power is off).

Headphone jack

Plug the headphone mini-plug into the headphone jack

located on the front of the main unit.

To change the vertical angle of the LCD

TV set, tilt the screen up to 2.5 degrees

forwards or 10 degrees backwards.

Please adjust the angle so that the LCD

TV set can be watched most comfortably.

Terminals

How to Fix the Cables

Be sure to secure the cables and AC cord with the supplied cable clamp.

Cable clamp

INPUT1

P

R

PBY

AUDIO (L)

AUDIO (L)

S-VIDEO

VIDEO

VIDEO

AUDIO (R)

ANT. (Antenna terminal)

AUDIO (R)

AUDIO (L)

AUDIO (R)

INPUT3/OUTPUT

INPUT2

Round lock for Kensington

Security Standard slot*

AC INPUT

terminal

(AC120 V)

*

Using the Kensington Lock

• This LCD TV set has a Kensington Security Standard slot for

use with a Kensington MicroSaver Security System. Refer to

the information that came with the system for instructions on

how to use it to secure the LCD TV set.

Remote sensor

POWER indicator

Upper control panel

Speaker

POWER

INPUT

CH (Channel)

(

)/( )

VOL (Volume)

(–)/(+)

MENU

Speaker

7

LC-15AV6U

DISPLAY

Displays the receiving channel

and the current time for 10

seconds.

INPUT ( )/( )

Switches the input source

between INPUT1, INPUT2,

INPUT3 and TV modes.

CH ( )/( )

Selects channel.

SLEEP

Sets the sleep timer.

AV MODE

Selects preferred AV MODE.

/ / / (Cursor control)

Selects a desired item on the

screen.

MENU

Displays the menu screen.

ENTER

Ex

ecutes a command.

POWER

Switches the Liquid Crystal

Television power on or standb

y.

Channel Select

Sets the channel.

MT

S

Selects audio settings

.

MUT

E

Mutes the sound.

VOL (+)/(–)

Sets the volum

e.

FLASHBACK

Returns to the previous

channel.

AUDIO ONL

Y

Outputs audio without screen

image

.

CC

Displays Closed Caption

subtitles

.

BACKLIGHT

Adjusts the brightness of the

screen.

PIC. FLIP

ets the orientation of the

picture

.

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8

LC-15AV6U

DIMENSIONS

Unit: inch (mm)

9

LC-15AV6U

REMOVING OF MAJOR PARTS

1. Remove the stand cover fixing screw (1 pc.).

2. Remove the stand fixing screws (4 pcs.).

3. Remove the cabinet B fixing screws (9 pcs.).

4. Remove the cabinet B after opening from the direction of an arrow.

5. Disconnect all the connectors from all the PWBs.

5

5

5

5

P5005

P5001

SC4000

SC5204

SC1701

Main PWB Sub PWB

LED/HP PWB

PWB HOLDER

Cabinet B

Cabinet A

3

3

4

2

1

Stand

Stand Cover

10

LC-15AV6U

6. Remove the chassis frame fixing screws (2 pcs.).

7. Remove the 2 lock screws from the main PWB. Detach the chassis frame, together with its terminals, from the
main PWB.

8. Remove the 4 lock screws from the sub PWB and the PWB fixing angle. Detach the chassis frame together with its
terminals, from the sub PWB.

9. Remove the LED/HP PWB fixing screws (2 pcs.).

10. Remove the 4 lock screws each from the right and left speakers and take out both the speakers.

Main PWB

Chassis Frame

Sub PWB

LED/HP PWB

10

9

6

10

7

8

8

Speaker (R)

Speaker (L)

11

LC-15AV6U

» Precautions in servicing the side-B (backside) of the main PWB unit

1. Remove the lock screws (2 pcs.) from the main PWB, detach the PWB from the chassis frame, and then turn it
over.

2. Connect the service-specific extension cable (QCNW-E540WJQZ) between the main PWB (SC5201) and the sub
PWB (P5002).

3. Connect the service-specific extension cable (QCNW-E540WJQZ) between the main PWB (SC5202) and the sub
PWB (P5003).

4. Connect the service-specific extension cable (QCNW-E540WJQZ) between the main PWB (SC5203) and the sub
PWB (P5004).

SC5201

P5002

P5005

SC1701

CN1

P5003

P5004

SC5202

SC5203

Main PWB
(Side-B)

3

4

2

1

4

3

2

Sub PWBMain PWB

LED/HP PWB

SC6701

Step Part No. Description

2 QCNW-E540WJQZ Extension Cable 26-pin Main (SC5201)-Sub (P5002)
3 QCNW-E540WJQZ Extension Cable 26-pin Main (SC5202)-Sub (P5003)
4 QCNW-E540WJQZ Extension Cable 26-pin Main (SC5203)-Sub (P5004)

Step Part No. Description

QCNW-C458WJQZ Extension Cable 80-pin Main (SC1701)-LCD (CN1)

» Other extension cable

12

LC-15AV6U

ADJUSTING PROCEDURE OF EACH SECTION

The best adjustment is made before shipping. If any position deviation is found or after part replacement is

performed, adjust as follows.

1. Preparations

(1) Plug the AC power cord directly into a wall outlet.
[1] Adjustment procedure
1-1. Adjusting the checker

Tu r ning on the power (initialization) → Making the model and size settings → Transferring the model-related
data to the setting E2PROM (I2C)

1-2. Adjusting the finish process

Final assembling →Tu r ning on the power → Calling the adjustment process mode (bus connector) → Adjust-
ing the common bias, TAMP and white balance (cut-off and gain) settings

[2] Calling the checker mode/adjustment process mode
2-1. Calling the checker mode

Keep KEY5 (pin (82) of microprocessor) at "L" and turn on the power.

KEY-4 KEY-5 Mode shift

HHNormal mode (Data is written and stored on EEP is brand-new.)

LHShift to adjustment mode

HLActivated with the checker-oriented master ROM values (EEP still brand-new even after the

checker mode)

LLThe EEP gets initialized and the microprocessor's master values are written.

(Process-adjusted settings not reprogrammed)

2-2. Calling the adjustment process mode
There are two ways to call this mode.
* Turn on the power and press the "ADJUST PROCESS" key on the remote controller.
* Keep KEY4 (pin (81) of microprocessor) at "L" and turn on the power.
* For servicing: Hold down the INPUT key and VOL (–) key at once, and turn on the power switch.("K" appears at

the top left of the screen to indicate the inspection process mode.) → Press the CH (ù) key and VOL (–) key at
once. (The adjustment process mode screen shows up.) _ To quit, turn off the power. (Or turn off the power switch
or turn off the remote controller.)

[3] Key operation in the adjustment process

Basic operation

3-1. Selecting the receiving channels
* Using the CH (Ù)/(ù) keys, turn up and down an actual receiving channel.

Snap press: The channels are turned up and down one by one.
Continuous press: The next receivable channel is searched.

*Various adjustments: The items are adjusted one by one by selecting on the menu screen and using the cursor

key and VOL (+)/(–) keys.
* With the CURSOR UP/DOWN keys, select an adjustment item.
* Using the MENU key, the adjustment items are selected one after another. When the bottom item on a page is

already selected and the MENU key is pressed, the top item on the next page is selected.
* If any item on a page is selected and the preset key is pressed, the top item on the next page is selected.

Page 1 → Page 2 → Page 3 → Page 7→ Page 9 → Page 1 ...
* If any item on a page is selected and the manual memory key is pressed, the top item on the same page is

selected.
* Using the CURSOR LEFT/RIGHT keys and VOL (+)/(–) keys, turn up and down the setting of a selected item.

Hierarchical shift
* When the ENTER key is pressed on any item other than I2C DATA on page 4, the setting page of the item shows

up.
*To quit the setting page, press the front screen key.

13

LC-15AV6U

3-2. ADC target level adjustment
* Using the UP/DOWN keys, enter RGTAR, GGTAR, BGTAR of Service Menu Page 7
* Press CH12 of remote control, enter adjustment situation "A3 A3 A3"
* Using the LEFT/RIGHT keys, make the first A3 correspond to RGTAR, the second A3 correspond GGTAR, and

the third A3 correspond BGTAR

* It is not adjusted usually.

[4] Initialization
4-1. Ground pins (81) and (82) of IC2001 (microprocessor) and turn on the power.
4-2. Make sure the screen size is set at 20 inches.
4-3. Make sure the model number is A635A.

(Adjustment Process Menu Page 1)

[5]
5-1. Model-by-model sending data

Separately published.

5-2. ROM collection

Separately published.

[6] Adjustment
6-1. Common bias adjustment

1) Feed a built-in signal.

2) Apply the specified instrument at the center of the screen.

3) Observe the instrument output on an oscilloscope.

4) Adjust the "COM BIAS" setting on Adjustment Process Page 2 so that the peak-to-peak of the wave be
minimized.

01234567891011 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

1

MO D E L 365

5

A

OF

A

0

F

INCH SIZE

ERR OR NO R ESE T

PUB L I C MOD E

0

1

2

3

4

OF

F

1

1

V

–

CH I P

EXT

VER ROM 1 . 0 0 A GAIBU 0.000

CO NT R O L

5

6

14

LC-15AV6U

6-2. TAMP adjustment

1) Receive the standard color bar signal.

2) See if the "Y" reading (maximum) on Adjustment Process Page 2 is within the range in the following table. If
not, adjust the "NTSC TAMP" setting on the same page to have the "Y" reading (maximum) within this range.

Reference
(Adjustment Process Menu Page 2)

3) The value of PAL/M TAMP and PAL/N TAMP is 6 more than the value of NTSC TAMP

6-3. White balance adjustment

1) Adjustment procedure
Adjust the RGB CUTOFF2 setting for white 40% first and then the RGB-GAIN setting for white 80%.
(1) Adjusting the test signal

[Input signal]White 80% (191 gradations) for the left of screen, and white 40%
(92 gradations) for the right.
[Specification]RGB CUTOFF2 and RGB-GAIN settings on Adjustment Process Page 3.

Adjustment spec. / Inspection spec.

White 80% x=0.271 ±0.004 ±0.01 Radius from center point

y=0.278 ±0.004 ±0.01 Radius from center point

White 40% x=0.258 ±0.002 ±0.01 Radius from center point

y=0.261 ±0.002 ±0.01 Radius from center point
[Adjusting with the bus]
Cut-off (RGB CUTOFF2): Fix the G setting at "0". Vary the R and B settings accordingly.

Adjustment range: -40(R) -50(B)

Gain (RGB-GAIN): Reduce the two strong colors. Adjustment range: ±40(R) -0(B)

(Reading with Minolta CA-210)

Model A3KL15AV6U

SETTING VALUE(NTSC)

155-158

012345678910111213 14 15 16 17 18 19 20 21 22 23 24 25 26

2

COM B I A S

46510

5

51

8

51

1

1

8

9

0

9

6

9

6

TAMP L

YDA T A

TAMP H

0

1

2

3

4

NTS C T AMP

PA L

–

TMAMP

PA L

–

TNAMP

5

6

7

Y data

(white 100%)

[7] Factory settings
7-1. Making factory settings

Use the adjustment remote controller for the factory settings.

1) Hold down the remote controller's FACTORY SETTING key.

2) Several seconds later, "SETTING COMPLETE" appears at the center of the screen.
Now the settings are complete.

SETTING COMPLETE

U

15

LC-15AV6U

7-2. Description of Factory Settings.

Setting content/range Initial

Value

(AV1) (AV2)

(COMPONENT1)

MENU PICTURE AV MODE STANDARD/DYNAMIC/DYNAMIC(FIXED)/MOVIE/GAME DYNAMIC DYNAMIC DYNAMIC

DYNAMIC

BACKLIGHT BRIGHT/NORMAL/DARK/VARIABLE VARIABLE

(STANDARD) (DYNAMIC)

(DYNAMIC(FIXED)

1 (DARK) ~9 (NORMAL)~17 (BRIGHT) 17 17
CONTRAST 0~60 30 45
BRIGHTNESS -30~+30

-30~+30

-30~+30

-30~+30

-30~+30

-30~+30

-10~+10

-10~+10

-10~+10

-10(L)~+10(R)

00
COLOR 0+5
TINT 00
SHARPNESS 00

(MOVIE)

7

25

0
0
0
0

(GAME)

9

30

0
0
0
0

ADVANCED COLOR TEMP. USER/HIGH/MIDDLE/LOW

RED 0
GREEN 0
BLUE 0
RESET YES/NO NO

RESET YES/NO NO

AUDIO TREBLE 0

BASS 0
BALANCE 0
RESET YES/NO NO

SETUP CH-SETTING EZ-SETUP YES/NO YES

LANGUAGE ENGLISH/ESPANOL/FRANCAIS ENGLISH
CH SETTING ON/OFF ON
AUTO CLOCK ON/OFF ON

START YES/NO YES
AIR/CABLE AIR/CABLE AIR
CH SEARCH ­CH MEMORY -

-

­MTS STEREO/SAP/MONO STEREO
INPUT3 SELECT IN/OUT /OUT IN
V-CHIP BLOCK SECRET No. 4 digits input Clear

MPAA G (NONE)/BLOCK NONE

PG (NONE)/BLOCK NONE
PG-13 (NONE)/BLOCK NONE
R (NONE)/BLOCK NONE
NC-17 (NONE)/BLOCK NONE
X (NONE)/BLOCK NONE

TV GUIDELINES TV-Y (NONE)/BLOCK NONE

TV-Y7 (NONE)/BLOCK NONE
TV-G (NONE)/BLOCK NONE
TV-PG (NONE)/BLOCK NONE
TV-14 (NONE)/BLOCK NONE
TV-MA (NONE)/BLOCK NONE
BLOCK
CONTENT

D (BLANK)/BLOCK BLANK (UN BLOCK)
L (BLANK)/BLOCK BLANK (UN BLOCK)
S (BLANK)/BLOCK BLANK (UN BLOCK)
V (BLANK)/BLOCK BLANK (UN BLOCK)

FV (BLANK)/BLOCK BLANK (UN BLOCK)
CAN.ENGLISH
RATINGS

C (NONE)/BLOCK NONE
C8+ (NONE)/BLOCK NONE
G (NONE)/BLOCK NONE
PG (NONE)/BLOCK NONE
14+ (NONE)/BLOCK NONE

18+ (NONE)/BLOCK NONE
CAN.FRENCH
RATINGS

G (NONE)/BLOCK NONE

8 ans+ (NONE)/BLOCK NONE

13 ans+ (NONE)/BLOCK NONE

16 ans+ (NONE)/BLOCK NONE

18 ans+ (NONE)/BLOCK NONE
STATUS ON/OFF OFF

CLOSED CAPTION OFF/CC1/CC2/T1/T2 OFF

(TV) (AV1) (AV2)

COLOR SYSTEM 20 N358 N358 N358

LANGUAGE ENGLISH/ESPANOL/FRANCAIS ENGLISH

OPTION VIEW MODE 4:3/16:9/ZOOM/STRTCH 4:3

AUDIO ONLY ON/OFF OFF
BLUE SCREEN ON/OFF OFF
SLEEP TIMER OFF/30/60/90/120/150MIN OFF(Clear)
WAKE UP TIMER TIMER ON/OFF OFF

TIME 12:00AM~11:59PM
CHANNEL CH1~125/COMPONENT1/COMPONENT2 or AV1/AV2 CH2
VOL. 0~60 20

NO SIGNAL OFF ENABLE/DISABLE
NO OPERATION OFF ENABLE/DISABLE
PICTURE FLIP NORMAL/MIRROR/ROTATE/UPSIDE DOWN NORMAL

(Items other than MENU)

ONEZ SETUP
LAST CHANNEL
LAST TV/INPUT

2ch

2ch

TV
FLASH BACK
SKIP DATA_CATV ALL SKIP
SKIP DATA_AIR ALL SKIP
VOLUME 20
LINE OUT LEVEL(VAO)

0
EDS CH (AUTO)

N358/N443/PAL/PAL-M/PAL-N/SECAM/PAL60

(Only for N358/PAL-M/PAL-N in TV mode)

MIDDLE

DISABLE

DISABLE

12:00AM

16

LC-15AV6U

8. Lamp error detection

8-1. Functional description

This LCD color television has a function (lamp error detection) to be turned off automatically for safety when
the lamp or lamp circuit is abnormal.
If the lamp or lamp circuit is abnormal, or some other errors happen, and the lamp error detection is
executed, the followings occur.
1 The main unit of television is turned off 5 seconds after it is turned on. (The power LED on the front side of

TV turns from green to red.)

2 If the situation 1 happens 5 times sequentially, television can not be turned on. (The power LED remains

red.)

8-2. Countermeasures
8-2-1. Check when turning off the lamp error detection

When television is turned off by the lamp error detection mentioned above, it enters the adjustment
process with the power LED red. Entering the adjustment process turns off the error detection and turns
on TV.
This enables the operation check to detect errors in the lamp or lamp circuit.
Check whether "ERROR NO RESET" on line 4, page 1 of the adjustment process is 1 or more. If it is 1 or
more, it indicates the lamp error detection was executed.

8-2-2. Resetting of the lamp error count

After confirming that the lamp or lamp circuit is normal, reset the lamp error count. Select "ERROR NO
RESET" on line 4, page 1 of the adjustment process and set the number to 0 using the "VOL (+)/(–)"
keys.

Page 1 of the adjustment process

Afterwards, perform the operation check to confirm that the lamp error detection does not function.

1

M O D E L A635A

I N C H S I Z E

15

E R R O R N O R E S E T 5

P U B L I C M O D E OFF

V – C H I P 1

E X T C O N T R O L OFF

V E R R O M 1. X X A G AI B U X. X X X

Reset 0

17

LC-15AV6U

Page No. Item

Initial Value

Function

Response precautions on servicing

(Do not change other items than designated.)

1 MODEL A635A MODEL NUMBER SELECT NOT MODIFIABLE

INCH SIZE 15 SCREEN SIZE SELECT

USED FOR ADJUSTMENT PROCESS

(20-INCH AND 13/15-INCH

INITIALIZATION, NOT MODIFIABLE FOR

SETTING NOT SWITCHABLE IN

OTHER CASES. DATA REWRITE AND

CASE OF DIFFERENT SYSTEMS)

READJUSTMENT REQUIRED WHEN
INITIALIZED.

ERROR NO RESET 0

LAMP ERROR COUNT AND RESET

SEE THE LAMP ERROR DETECTION.
PUBLIC MODE OFF HOTEL MODE SETTING NOT USED
V-CHIP 1 VCHIP LINE MUTE SETTING NOT USED
EXT CONTROL OFF BUS, UART OPEN NOT USED
ROM AND GAIBU VERSION NUMBERS DISPLAYED AT THE BOTTOM.

VIDEO ADJUSTMENT

2 COM BIAS 460 COMMON BIAS ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.

TAM P L 155

Y LOWER LIMIT SETTING AT TAMP ADJUSTMENT

NOT USED
YDATA —

DATA READ VALUE AT TAMP ADJUSTMENT

SEE THE ADJUSTMENT PROCEDURES.
TAM P H 158

Y UPPER LIMIT SETTING AT TAMP ADJUSTMENT

NOT USED
NTSC TAMP 90 TAMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.
PAL-M TAMP 96 TAMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.
PAL-N TAMP 96 TAMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.

BACKGROUND ADJUSTMENT

3R CUTOFF2 0 RED CUT-OFF ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES.

G CUTOFF2 0 GREEN CUT-OFF ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES.
B CUTOFF2 0 BLUE CUT-OFF ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES.
R-GAIN 0 WHITE BALANCE ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES.
G-GAIN 0 WHITE BALANCE ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES.
B-GAIN 0 WHITE BALANCE ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES.
RGB GAMMA 1.0 RGB g COEFFICIENT SETTING NOT USED

TABLE OF VARIOUS SETTINGS

9I

2

C DATA 0

I2C BUS CONTROL IC DATA WRITE AND READ

NOT USED
I2C DATA WAIT

WAIT

WRITE AND READ EXECUTED NOT USED

SOUND —

SHIFT TO THE SOUND ADJUSTMENT PAGE

USE ENTER KEY TO GO TO THE SOUND ADJUSTMENT PAGE.
DVP —

SHIFT TO THE DVP ADJUSTMENT PAGE

USE ENTER KEY TO GO TO THE TC ADJUSTMENT PAGE.
TUNER —

SHIFT TO THE TUNER ADJUSTMENT PAGE

USE ENTER KEY TO GO TO THE TUNER ADJUSTMENT PAGE.
OTHERS —

SHIFT TO THE OTHER ADJUSTMENT PAGE

USE ENTER KEY TO GO TO THE OTHER ADJUSTMENT PAGE.

BASIC SETTINGS

Page No. Item Initial Value Function

Response precautions on servicing

(Do not change other items than designated.)

AUDIO ADJUSTMENT PROCESS SPECIFICATIONS

AUDIO ADJUSTMENT

SOUND1 VOLUME 20 SOUND VOLUME NOT USED

MSP DATA 0

AUDIO IC MSP DATA WRITE AND READ

NOT USED
MSP DATA

WRITE AND READ EXECUTED

NOT USED
CARRIER MUTE ON

AUDIO OUTPUT SETTING WITHOUT TV SYNC

NOT USED
IGR THR 12D IGR THRESH LEVEL NOT USED

AUDIO ADJUSTMENT

SOUND2 PRESCALE SCART

27

PRE-SCALE SETTING (EXTERNAL INPUT)

NOT USED
PRESCALE FM/AM-M 31 PRE-SCALE SETTING (TV) NOT USED

LIST OF THE ADJUSTMENT PROCESS MODE MENU

For calling the adjustment process mode and keying in this mode, refer back to "ADJUSTING PROCEDURE OF
EACH SECTION

"

.

ADJUSTMENT PROCESS 1st LEVEL ITEM DEFAULT TABLE

18

LC-15AV6U

Page No. Item

Initial Value

Function

Response precautions on servicing

(Do not change other items than designated.)

AUDIO ADJUSTMENT

SOUND3 BAND1 MIN TV -0400

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

-0400

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND1 CNT TV +0400

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

+0400

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND1 MAX TV +1200

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

+1200

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND2 MIN TV -0400

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

-0400

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND2 CNT TV -0100

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

-0100

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND2 MAX TV +0200

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

+0200

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND3 MIN TV -0250

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

-0250

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

AUDIO ADJUSTMENT

SOUND4 BAND4 MIN TV +0150

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

+0150

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND4 CNT TV +0450

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

+0450

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND4 MAX TV +0750

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

+0750

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND5 MIN TV -0525

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

-0525

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND5 CNT TV +0275

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

+0275

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND5 MAX TV +1075

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER

+1075

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

Page No. Item Initial Value Function

Response precautions on servicing

(Do not change other items than designated.)

AUDIO ADJUSTMENT PROCESS SPECIFICATIONS

VIDEO ADJUSTMENT

DVP1 DVP DATA 0000 F0 ------(----)

—

DVP-RELATED GENERAL-PURPOSE VARIABLE SETTINGS

NOT USED

DVP TEST PATTERN 0 TEST PATTERN SELECT

SEE THE ADJUSTMENT PROCESS MODE TEST PATTERNS.

VCDOFFSET 15

VERTICAL COUNT-DOWN MINIMUM OSCILLATION CYCLE

NOT USED

VCDWINDOW 30

VERTICAL COUNT-DOWN SYNC RANGE

NOT USED

VIDEO ADJUSTMENT

DVP3 N358 TV CONTRAST 128 IMAGE SETTING (TV) NOT USED

N358 AV CONTRAST 128

IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED
N358 TV BRIGHT 118 BRIGHTNESS SETTING (TV) NOT USED
N358 AV BRIGHT 118

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED
N358 TV COLOR 40 COLOR DENSITY SETTING (TV) NOT USED
N358 AV COLOR 40

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED
N358 TV TINT 140 TINT SETTING (TV) NOT USED
N358 AV TINT 155

TINT SETTING (COMPOSITE, S VIDEO)

NOT USED
N358 TV SHRAP V 100

V PICTURE QUALITY SETTING (TV)

NOT USED
N358 AV SHARP V 100

V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED
N358 TV SHRAP H1 150

H PICTURE QUALITY SETTING 1 (TV)

NOT USED
N358 AV SHARP H1 150

H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED
N358 TV SHRAP H2 130

H PICTURE QUALITY SETTING 2 (TV)

NOT USED
N358 AV SHARP H2 150

H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

19

LC-15AV6U

Page No. Item Initial Value Function

Response precautions on servicing

(Do not change other items than designated.)

VIDEO ADJUSTMENT

DVP4 N443 AV CONTRAST 128

IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED

N443 AV BRIGHT 128

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED

N443 AV COLOR 37

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED

N443 AV TINT 128

TINT SETTING (COMPOSITE, S VIDEO)

NOT USED

N443 AV SHARP V 100

V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED

N443 AV SHARP H1 150

H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED

N443 AV SHARP H2 150

H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

VIDEO ADJUSTMENT

DVP5 PAL AV CONTRAST 128

IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL AV BRIGHT 128

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL AV COLOR 37

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL AV TINT 128

TINT SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL AV SHARP V 100

V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL AV SHARP H1 150

H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED

PAL AV SHARP H2 150

H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

VIDEO ADJUSTMENT

DVP6 SECAM AV CONTRAST 128

IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED

SECAM AV BRIGHT 128

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED

SECAM AV COLOR 37

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED

SECAM AV TINT 128

TINT SETTING (COMPOSITE, S VIDEO)

NOT USED

SECAM AV SHARP V 100

V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED

SECAM AV SHARP H1 150

H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED

SECAM AV SHARP H2 150

H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

VIDEO ADJUSTMENT

DVP7 PAL60 AV CONT 128

IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL60 AV BRIGHT 128

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL60 AV COLOR 37

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL60 AV TINT 128

TINT SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL60 AV SHARP V 100

V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL60 AV SHARP H1 150

H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED

PAL60 AV SHARP H2 150

H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

VIDEO ADJUSTMENT

DVP8 PAL-M TV CONTRAST 128 IMAGE SETTING (TV) NOT USED

PAL-M AV CONTRAST 128

IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED
PAL-M TV BRIGHT 128 BRIGHTNESS SETTING (TV) NOT USED
PAL-M AV BRIGHT 128

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED
PAL-M TV COLOR 37 COLOR DENSITY SETTING (TV) NOT USED
PAL-M AV COLOR 37

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED
PAL-M TV TINT 128 TINT SETTING (TV) NOT USED
PAL-M AV TINT 128

TINT SETTING (COMPOSITE, S VIDEO)

NOT USED
PAL-M TV SHRAP V 100

V PICTURE QUALITY SETTING (TV)

NOT USED
PAL-M AV SHARP V 100

V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED
PAL-M TV SHRAP H1 150

H PICTURE QUALITY SETTING 1 (TV)

NOT USED
PAL-M AV SHARP H1 150

H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED
P

AL-M TV SHRAP H2 130

H PICTURE QUALITY SETTING 2 (TV)

NOT

USED

PAL-M AV SHARP H2 150

H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

20

LC-15AV6U

Page No. Item Initial Value Function

Response precautions on servicing

(Do not change other items than designated.)

VIDEO ADJUSTMENT

DVP9 PAL-N TV CONTRAST 128 IMAGE SETTING (TV) NOT USED

PAL-N AV CONTRAST 128

IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED
PAL-N TV BRIGHT 128 BRIGHTNESS SETTING (TV) NOT USED
PAL-N AV BRIGHT 128

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED
PAL-N TV COLOR 37 COLOR DENSITY SETTING (TV) NOT USED
PAL-N AV COLOR 37

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED
PAL-N TV TINT 128 TINT SETTING (TV) NOT USED
PAL-N AV TINT 128

TINT SETTING (COMPOSITE, S VIDEO)

NOT USED
PAL-N TV SHARP V 100

V PICTURE QUALITY SETTING (TV)

NOT USED
PAL-N AV SHARP V 100

V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED
PAL-N TV SHARP H1 150

H PICTURE QUALITY SETTING 1 (TV)

NOT USED
PAL-N AV SHARP H1 150

H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED
PAL-N TV SHARP H2 130

H PICTURE QUALITY SETTING 2 (TV)

NOT USED
PAL-N AV SHARP H2 150

H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

VIDEO ADJUSTMENT

DVP10 525I CONT 133 IMAGE SETTING (TV) NOT USED

525I BRIGHT 118 BRIGHTNESS SETTING (TV) NOT USED
525I COLOR 60 COLOR DENSITY SETTING (TV) NOT USED
525I TINT 150 TINT SETTING (TV) NOT USED
525I SHARP V 100

V PICTURE QUALITY SETTING (TV)

NOT USED
525I SHARP H1 150

H PICTURE QUALITY SETTING 1 (TV)

NOT USED
525I SHARP H2 150

H PICTURE QUALITY SETTING 2 (TV)

NOT USED
525P CONT 133

IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED
525P BRIGHT 128

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED
525P COLOR 55

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED
525P TINT 145

TINT SETTING (COMPOSITE, S VIDEO)

NOT USED
525P SHARP V 130

V PICTURE QUALITY SETTING (TV)

NOT USED
525P SHARP H1 120

H PICTURE QUALITY SETTING 1 (TV)

NOT USED
525P SHARP H2 120

H PICTURE QUALITY SETTING 2 (TV)

NOT USED

VIDEO ADJUSTMENT

DVP11 625I CONT 133 IMAGE SETTING (TV) NOT USED

625I BRIGHT 128 BRIGHTNESS SETTING (TV) NOT USED
625I COLOR 52 COLOR DENSITY SETTING (TV) NOT USED
625I TINT 128 TINT SETTING (TV) NOT USED
625I SHARP V 100

V PICTURE QUALITY SETTING (TV)

NOT USED
625I SHARP H1 150

H PICTURE QUALITY SETTING 1 (TV)

NOT USED
625I SHARP H2 150

H PICTURE QUALITY SETTING 2 (TV)

NOT USED
625P CONT 133

IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED
625P BRIGHT 128

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED
625P COLOR 52

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED
625P TINT 128

TINT SETTING (COMPOSITE, S VIDEO)

NOT USED
625I SHARP V 130

V PICTURE QUALITY SETTING (TV)

NOT USED
625I SHARP H1 120

H PICTURE QUALITY SETTING 1 (TV)

NOT USED
625I SHARP H2 120

H PICTURE QUALITY SETTING 2 (TV)

NOT USED

21

LC-15AV6U

Page No. Item Initial Value Function

Response precautions on servicing

(Do not change other items than designated.)

VIDEO ADJUSTMENT

DVP12 1125I CONT 133 IMAGE SETTING (TV) NOT USED

1125I BRIGHT 128 BRIGHTNESS SETTING (TV) NOT USED
1125ICOLOR 52 COLOR DENSITY SETTING (TV) NOT USED
1125I TINT 128 TINT SETTING (TV) NOT USED
1125I SHARP V 100

V PICTURE QUALITY SETTING (TV)

NOT USED

1125I SHARP H1 100

H PICTURE QUALITY SETTING 1 (TV)

NOT USED

1125I SHARP H2 100

H PICTURE QUALITY SETTING 2 (TV)

NOT USED

750P CONT 133

IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED

750P BRIGHT 128

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED

750P COLOR 52

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED

750P TINT 128

TINT SETTING (COMPOSITE, S VIDEO)

NOT USED

750P SHARP V 100

V PICTURE QUALITY SETTING (TV)

NOT USED

750P SHARP H1 100

H PICTURE QUALITY SETTING 1 (TV)

NOT USED

750P SHARP H2 100

H PICTURE QUALITY SETTING 2 (TV)

NOT USED

Page No. Item Initial Value Function

Response precautions on servicing

(Do not change other items than designated.)

ADJUSTMENT PROCESS TUNER ITEM DEFAULT TABLE

TUNER SETTINGS

TUNER1 AFT UP 1.80

AFT VOLTAGE REFERENCE LEVEL (ALL BANDS)

NOT USED

AFT DOWN 1.20

AFT VOLTAGE REFERENCE LEVEL (ALL BANDS)

NOT USED

LSYNC2 150
HSYNC2 162

LSYNC 150

SYNC JUDGMENT THRESHOLD (TV)

NOT USED

HSYNC 162

SYNC JUDGMENT THRESHOLD (TV)

NOT USED

AVSYNC

SYNC JUDGMENT THRESHOLD (EXTERNAL INPUT)

NOT USED

COMPSYNC

SYNC JUDGMENT THRESHOLD (COLOR DIFFERENCE INPUT)

NOT USED

EDS TEST 10

DURATION UNTIL JUDGMENT OF NO EDS TIME DATA (SECONDS)

NOT USED

TUNER SETTINGS

TUNER2 AFT FARTIME 50

CHANNEL PRESET TIME ADJUSTMENT 1

NOT USED

AFT NEARTIME 30

3

CHANNEL PRESET TIME ADJUSTMENT 2

NOT USED

AFT NEARMTIME 10

CHANNEL PRESET TIME ADJUSTMENT 3

NOT USED

AFT 1STEPTIME 10

CHANNEL PRESET TIME ADJUSTMENT 4

NOT USED

AFT CSYNCTIME 50

CHANNEL PRESET TIME ADJUSTMENT 5

NOT USED

SYNC

SYNC ON

WIDTH

10

CHANNEL PRESET TIME ADJUSTMENT 6

NOT USED

1

1

CHANNEL PRESET TIME ADJUSTMENT 7

NOT USED

OTHERS

OTHERS1 DAC DATA 00--- —

DAC-RELATED GENERAL-PURPOSE

NOT USED

VARIABLE SETTINGS

L ERROR WAIT 15s

LAMP ERROR DETECT WAIT TIME

NOT USED
L ERROR H TIME 1.0s LAMP ERROR DETECT TIME NOT USED
TV AUTO GAIN OFF UTO GAIN SETTING FOR TV NOT USED
PWM FREQ 150

DIMMER FREQUENCY SETTING (IN HZ)

NOT USED
PWM DUTY 0

DIMMER DUTY SETTING

NOT USED
OPC THRESHOLD 24 INPUT LEVEL THRESHOLD FROM NOT USED

BRIGHTNESS SENSOR STOP
MODE TO OPERATION MODE

HOTEL POWERFIX OFF

USED FOR FIXED HOTEL MODE POWER ON

NOT USED
COMP SYSTEM AUTO

COMPONENT SIGNAL SELECT IN ADJUSTMENT PROCESS

NOT USED
REMOCON CODE DISPLAYED AT THE BOTTOM

OTHERS2 3D Y/C 0 3D ON/OFF SETTING NOT USED

3DY/C DATA 0 3D YC DATA WRITE AND READ NOT USED
3DY/C DATA WAIT WRITE AND READ EXECUTED NOT USED
KIL OFF FORCED KILLER SETTING FOR NOT USED

SIGNAL WITHOUT COLOR BURST

CLOSED CAPTION 15

CLOSED CAPTION THRESH LEVEL

NOT USED

22

LC-15AV6U

PUBLIC MODE SETTING PROCEDURE

1. How to start Public Mode

• There are the following two ways to get the public mode setup screen displayed.
1 In the adjustment process mode, turn on "PUBLIC MODE". Also press the "CH (ù)" and "VOL (+)" keys on

the set at once and turn on the power.

2 1) Press the "INPUT" and "VOL (+)" keys on the set at once and turn on the power.

2) Get the password input screen displayed.

Procedure

• The input starts with the leftmost digit.

• Use the numeric keys [1] thru [9] and [10/0] keys on the remote con-

troller. The other keys are not acceptable.

• With a numeric-key input, "–" will change to "

". The input position

will move one digit to the right.

• With all the 3 digits entered, the password will be verified.

3) The 3-digit password is now verified.
The password [0] [2] [7] provides for the public mode screen. (This screen comes on with whatever
adjustment process settings.)
With any other passwords, the screen changes to the normal mode.

23

LC-15AV6U

2. How to exit Public Mode

There are the following ways to quit the public mode setup screen.

• Tu rn off "PUBLIC MODE" in the adjustment process mode. (✩) ← This way alone is not for quitting the setup

screen, but for quitting the mode itself.

• Tu rn off the power with the "POWER" key. (★)

• Select "ENTER". (★)

• Move the cursor to "RESET" and press the "FLASHBACK" key. (Back to the normal mode screen)(✩)

★ ... "PUBLIC MODE" stays on in the adjustment process mode.
✩ ... The settings will be back to the factory ones.

3. Public Mode Setting Values

• With the factory settings made, the public mode settings get initialized. (The adjustment process remains intact.)

4. Public Mode Menu

The guidance is not displayed onscreen.
Setup procedure

• To move the cursor up and down, use the "cursor UP/DOWN" key (remote controller) and "CH (ù)/(Ù)" key

(remote controller and set).

• To change the settings, use the "cursor RIGHT/LEFT" key (remote controller) and "VOL (+)/(–)" key (remote

controller and set).

• To save new settings, keep the cursor at "Enter" and use the "cursor RIGHT/LEFT" key (remote controller) and

"VOL (+)/(–)" key (remote controller and set).

Public mode

Power on fixed [Variable ]

Maximum volume [ 60 ]

Volume fixed [Variable ]

Volume fixed level [ 20 ]

RC button [Respond ]

Panel button [Respond ]

Menu button [Respond ]

On screen display [Yes ]

Input mode start [Normal ]

Input mode fixed [Variable ]

Reset

Enter

24

LC-15AV6U

5. On Setting Items

* "EZ-SETUP" discussed below indicates "EZ-SETUP after the first power-on".
(1) POWER ON FIXED

(2) MAXIMUM VOLUME

(3) VOLUME FIXED

Selection
Default
Explanation

Limit in Setting
Exception
Remarks

Selection between

"Var iable" and "Fixed" (loop provided)

– (Variable)
In

"Fixed" setting, the power-off by the power key of the unit is invalidated and the image is kept being

received. The power can be turned off by stopping the power supply from AC.
Refer to the

"Power-On Fixed" sheet.

None

•

Selection of "FIXED" depends on use of STB etc.

•

In "Variable" setting, the power operation is in wait for 1 sec. and then turned off when the main power
switch is off.

•

Display ON/OFF in hotel menu is controlled by adjustment process "HOTEL POWERFIX".

Selection
Default
Explanation
Limit in Setting

Exception

Remarks

Adjustment from 0 to 60 (no loop)
60
Sound volume can not be adjusted higher than the preset value.

•

When the sound volume is set lower than 59, only figures are displayed and the sound volume bar is not
displayed.

•

The maximum sound volume for ON-timer (Wake up timer) is limited also to the preset value.

•

In the item "VOLUME" of adjustment process, the sound volume can be set freely irrespective of this
setting.

•

In line output (sound volume variable), the sound volume can be adjusted from -60 to 0 irrespective of pre­adjusted value.

•

When the sound volume is set higher than the MAX setting by the adjusting process, the sound volume
control operation is prohibited for turn-up and the sound volume should be turned down to MAX in this
state.

Selection
Default
Explanation
Limit in Setting

Exception

Remarks

Selection between "Variable" and "Fixed" (loop provided)
Variable
Sound volume is fixed and made invariable.

•

The sound volume for the ON-timer (Wake up timer) is fixed also without display of menu. Besides, the
setting is made impossible. (Basically, the menu is not displayed.)

•

The following keys become invalid:

•

Sound volume Up/Down (VOL +/-) [for both remote control and the unit]

•

Mute (MUTE)

•

In the item "VOLUME" of adjustment process, the sound volume can be set freely irrespective of this
setting.

•

In line output (sound volume variable), the sound volume can be adjusted from -60 to 0 irrespective of pre­adjusted value.

•

As for sound volume fixing and sound volume MAX level, the sound volume fixing has priority.

•

Once the sound volume has been changed by adjustment process, it should be set back to the sound
volume preset by sound volume fixing level when the adjustment process ends .

25

LC-15AV6U

(4) VOLUME FIXED LEVEL

(5) R/C BUTTON

(6) PANEL BUTTON

(7) MENU BUTTON

Selection
Default
Explanation
Limit in Setting
Exception
Remarks

Adjustment from 1 to 60 (no loop)
10
The sound volume to be fixed by

"Volume fixed" is determined.

None
None
Setting is valid only when

"Volume fixed" is selected for "fixed".

Selection
Default
Explanation
Limit in Setting

Exception

Remarks

Selection between

"Respond" , "Limited" and "No respond" (loop provide)

Respond
Keys acceptable by remote control are limited or reception of keys can be prohibited.
1In

"limited" setting, only power ON/OFF, sound volume '", tuning '" and BACKLIGHT (brightness

sensor) are accepted.
2In

"No respond" setting, all the keys (including the power key) are not accepted.

•

Adjustment process, factory setting, inspection process and hotel only keys are valid irrespective of setting.

•

All the keys can be used in adjustment process, inspection mode and hotel menu irrespective of setting.

•

All the keys can be used also in the initial EZ-Setup after power-ON irrespective of setting.

Selection
Default
Explanation
Limit in Setting
Exception

Remarks

Selection between

"Respond" and "No respond" (loop provide)

Respond
All the operations by keys (except the power key) of the unit can be invalidated.

•

Inspection mode and hotel menu mode can be started irrespective of setting.

•

All the keys can be used in adjustment process, inspection mode and hotel menu irrespective of setting.

•

In U.S.A model, all the keys can be used also in the initial EZ-Setup after power-ON irrespective of
setting.

Selection
Default
Explanation

Limit in Setting

Exception

Remarks

Selection between

"Respond" and "No respond" (loop provide)

Respond
In

"No respond" setting, the menu operation by the menu key of the remote control and the menu key of the

unit are invalidated.

•

ON-timer (Wakeup Timer) is turned OFF.

•

The following keys become invalid.
Wake-up timer and clock setting keys and all of the direct change keys to menu display

•

Inspection mode and hotel menu mode can be started irrespective of setting.

•

All the keys can be used in adjustment process, inspection mode and hotel menu irrespective of setting.

•

All the keys can be used also in the initial EZ-Setup after power-ON irrespective of setting.

26

LC-15AV6U

(8) ON SCREEN DISPLAY

(9) INPUT MODE START

Selection
Default
Explanation

Limit in Setting

Others

Exception

Remarks

Selection between "Ye s " , "Limited" (loop provide)
Ye s
The following OSD displays are made ineffective.
Displays of menu group, channel call, sound volume bar and direct key call

•

ON-timer (Wake-up timer) is cleared and set to "OFF".

•

Set time of the OFF-timer (SLEEP TIMER) is cleared.

•

Setting of the no-signal power-OFF (AUTO POWER OFF) is cleared to "OFF".

•

Setting of the no-operation power-OFF is cleared to "OFF".

•

Keys falling under any of the following items become invalid.

1Appearance of screen changes and the sound changes.
2Personal functions which are hard to restore.

Screen display, menu, OFF-timer, ON-timer, AV MODE, screen size switching, clock setting, treble
emphasis, AUDIO ONLY, sound changeover, LANGUAGE, CLOSED CAPTION

•

Simple input switching is generated. Those which are restored soon after leaving as they are and may be
requested for change by customer are not prohibited.
Brightness sensor (BACKLIGHT) and PIC. FLIP

•

Such a caution which is displayed independently is displayed as it is.
Non-responding signal caution, V-Chip caution and power-ON fixing caution

•

When CC has already been ON, CLOSED CAPTION is displayed.

Selection
Default
Explanation

About options

Limit in Setting
Exception
Remarks

Selection between

"Normal" , "TV (CH~)" "INPUT 1/2/3" (loop provide)

Normal
In power-ON, the input source to be started or channel can be set.
(In standard mode, the operation follows the last memory.)

•

All the input sources in the model are made selectable.

•

When the input/output switchable input source is selected and the input source is set to output, the setting
of input/output switching is changed to input at the execution of hotel menu. In addition, the input/output
switching by menu is prohibited.

•

In TV mode, the channel to be set follows the last memory and the content of the last memory is included
in the notation by options. Ex.) TV (CH2), TV (CH4) etc.

•

The display of channel setting menu and the channel setting operation are prohibited.

•

In the start by "ON-timer (Wake-up timer)", the channel set by ON-timer (Wake-up timer) has priority.

•

In setting at "Normal", the setting of "Input mode fixed" is changed to "Variable" and selection should be
prohibited.

(10) INPUT MODE FIXED

Selection
Default
Explanation

Limit in Setting

Exception
Remarks

Selection between

"Var iable" and "Fixed" (loop provide)

– (Variable)
The input mode is fixed at the input source or the channel set at the

"Input mode start" in 9 and other input

sources and channels can be made non-selectable.

•

With the execution of hotel mode, the input source is forced to change to that set by "Input mode start"
and the channel switching and input switching are prohibited thereafter.

•

ON-timer's (Wake-up timer) channel items are not displayed or the operation is prohibited. (Basically, they
are not displayed.)

•

The following keys are invalidated.
CH '", direct tuning button, FLASHBACK, input
~However, the keys (input switching and CH '" keys) of the unit for menu operation remain valid.

None

•

In the following case, setting is cancelled and mode is changed to "Var iable".
1When the setting of

"Input mode start" is set to "Standard (Normal)"

27

LC-15AV6U

Check all output voltage

line for short or open

circuit.

Is T7702 secondary

output at C7734, C7735

voltage normal?

Check the voltage at

C734, C735, C754 and

C750 are normal.

Check the primary side

of IC7001, IC702, IC706

and IC705 their

peripheral circuit.

Is F7701 specified?

And be function?

Disconnect F6700 or

F6702 Is the load

short-circuited?

Are F6700 and F6702

as specified?

Are there DC 18V input

at F6700 and F6702?

Is the pin (187) of

IC801 in "H" state?

No video and audio output (No po

wer)

No fluorescent lamp light-up

Yes

Yes

No

No

No

No

No

No

No

No

Is Q7751 base v

oltage at

"L" state?

Replace F7701.

Accord specified.

Remove F7701 and

check the load side. Is

there any short-circuit in

T7702 primary side and

periphery?

Yes

Yes

Are the outputs of

Q5001 in the "L" state?

Yes

Are the waveform of pins

(2) and (4) of T6700-

T6704 normal?

Yes

Is the waveform of pin

(10) of T6700-T6704

normal?

Yes

Check the error amp

circuit

D6700, D6701, D6702,

D6703, D6704, D6705,

Yes

Check IC7701/T7702

and its peripheral

parts.

Check the OFL 1/2

line, IC801 and its

peripheral parts.

Check the OFL line,

Q5001 and its

peripheral parts.

Check Q6700-Q6702,

Q6702-Q6709 and its

peripheral parts.

Replace the backlight

lamp with new one

and check again.

Check Q6700-Q6702,

Q6702-Q6709 and its

peripheral parts.

Yes

Yes

Check IC7701 and its

peripheral parts.

No

No

D6707, D6708, D6709,

D6710, D6711 and their

peripheral parts.

TROUBLESHOOTING TABLE

No TV Color

Check the output of IC801 and its

peripheral circuits.

Make sure the microprocessor's adjustment process menu settings are as specified.

No Video Color No S Video Color No Component Color

No Color

Check the line between pin (8) of

SC5202 and pin (31) of IC801.

Check the line between pin (3), (4) of

SC5202 and pin (21), (33) of IC801.

Check all output voltage

line for short or open

circuit.

Is T7702 secondary

output at C7734, C7735

voltage normal?

Check the voltage at

C734, C735, C754 and

C750 are normal.

Check the primary side

of IC7001, IC702, IC706

and IC705 their

peripheral circuit.

Is F7701 specified?

And be function?

No video and audio output (No po

wer)

Yes

Yes

No

Is Q7751 base v

oltage at

"L" state?

Replace F7701.

Accord specified.

Remove F7701 and

check the load side. Is

there any short-circuit in

T7702 primary side and

periphery?

Yes

Yes

Check IC7701 and its

peripheral parts.

No

No

28

LC-15AV6U

TROUBLESHOOTING TABLE (Continued)

No TV output

No TV, video 1 and 2 output

No video output at all

No component output

No S video output

No video 2 outputNo video 1 output

Make sure the microprocessor's adjustment process menu settings are as specified.

Yes

No

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

Are the input

and output of

IC801 as

specified?

Check IC801

and its

peripheral

circuits.

Check the

LCD panel

voltage and

waveform.

Are the input

and output of

IC3402 as

specified?

Check

IC3402 and

its peripheral

circuits.

Check the

line in

question.

Are the

voltages at

pins (3), (9)

and (15) of

tuner as

specified?

Is the output

at pin (17) of

tuner as

specified?

Is the input

at pin (5) of

IC3402 as

specified?

Is the output

of IC3402 as

specified?

Check the

line in

question.

Check

IC3402 and

its peripheral

circuits.

Check the

line in

question.

Check the

tuner and its

peripheral

circuits.

Check the

power line.

Is the input

at pin (1) of

IC3402 as

specified?

Is the output

of IC3402 as

specified?

Check the

line in

question.

Check the

line in

question.

Check

IC3402 and

its peripheral

circuits.

Is the input

at pin (3) of

IC3402 as

specified?

Is the output

of IC3402 as

specified?

Check the

line in

question.

Check the

line in

question.

Check

IC3402 and

its peripheral

circuits.

No

Yes

No

Yes

Is the input

at pin (24) of

S terminal

detector

IC2001 as

specified?

Are the

inputs at pins

(31) and (42)

pf IC801 as

specified?

Check the

related line.

Check the

related line.

Check

IC801 and its

peripheral

circuits.

No video output

Are the inputs at pins (21),

(33) and (44) of IC801 as

specified?

Check the D-Y, D-Pb and

D-Pr lines of J3405.