SHARP LC13B2U Service Manual

LC-13B2U

SERVICE MANUAL

S61U5LC-13B2U

LCD COLOR TELEVISION

MODEL

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored
to its original condition and only parts identical to those specified should be used.

LC-13B2U

CONTENTS

Page Page

» IMPORTANT SERVICE SAFETY

PRECAUTION.................................................... 2

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

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

» DIMENSIONS .................................................... 9

» REMOVING OF MAJOR PARTS ..................... 10

» ADJUSTING PROCEDURE OF

EACH SECTION.............................................. 13

» TROUBLE SHOOTING TABLE ........................ 16

» CHASSIS LAYOUT .......................................... 20

» BLOCK DIAGRAM........................................... 22

» DESCRIPTION OF SCHEMATIC DIAGRAM .. 24
» SCHEMATIC DIAGRAM

Ë

OPERATION and R/C RECEIVER UNIT... 25

Ë

MAIN UNIT ................................................ 26

Ë

TERMINAL UNIT ....................................... 34

Ë

JACK UNIT ................................................ 38

» PRINTED WIRING BOARD ASSEMBLIES ..... 39

» PARTS LIST

Ë

ELECTRICAL PARTS ................................ 43

Ë

MAIN UNIT ................................................ 43

Ë

TERMINAL UNIT ....................................... 46

Ë

OPERATION UNIT..................................... 48

Ë

JACK UNIT ................................................ 49

Ë

R/C RECEIVER UNIT................................ 49

Ë

CABINET PARTS LOCATION.............. 49, 52

Ë

CABINET AND MECHANICAL PARTS ..... 50

Ë

ACCESSORIES PARTS ............................ 52

Ë

PACKING PARTS....................................... 52

» PACKING OF THE SET................................... 53

SHARP CORPORATION

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

1

LC-13B2U

2

2

IMPORTANT SERVICE SAFETY PRECAUTION

Ë

Service work should be perfomed only b y qualified service technicians who are thoroughl y
familiar with all safety checks and the servicing guidelines which follow:

WARNING

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

2. Disconnect AC power before servicing.

CAUTION: FOR CONTINUED
PROTECTION A GAINST A RISK OF
FIRE REPLACE ONLY WITH SAME

A V

TYPE FUSE. F3701 (2.0A, 125V),
F3703 (2.5A, 125V) FUSE.

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

• Using two clip leads, connect a 50k ohm, 10 watt resistor
paralleled by a 0.15µF capacitor in series with all
exposed metal cabinet parts and a known earth ground,
such as electrical conduit or electrical ground connected
to an earth ground.

• Use an AC voltmeter ha ving with 5000 ohm per volt, or
higher, sensitivity or measure the AC voltage drop
across the resisor.

• 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 and 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
milliamp. peak A C .) or more is e xcessive and indicates
a potential shock hazard which must be corrected
before returning the monitor to the owner .

DVM

AC SCALE

50k ohm

10W

0.15 µF

TEST PROBE

TO EXPOSED
METAL PARTS

CONNECT TO
KNOWN EARTH
GROUND

234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121

SAFETY NOTICE

Many electrical and mechanical parts in LCD 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 and etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical

and shaded areas in the

Schematic Diagrams

For continued protection, replacement parts must be
identical to those used in the original circuit.
The use of a substitute replacement parts which do not
have the same safety characteristics as the factory
recommended replacement parts shown in this service
manual, may create shock, fire or other hazards.

components having such features are identified by “ å”

234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121

2

Replacement Parts Lists

.

and

LC-13B2U

2
2

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

Ë

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

AVERTISSEMENT

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

2. Débrancher le récepteur avant toute réparation.

PRECAUTION: POUR LA
PRO TECTION CONTINUE CONTRE
LES RISQUES D'INCENDIE,
REMPLACER LE FUSIBLE PAR UN

A V

FUSIBLE DE MEME TYPE F3701
(2.0A, 125V), F3703 (2.5A, 125V).

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 50 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 trav ers
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

VTVM

AC SCALE

ECHELLE CA

50k ohm

10W

0.15 µF

0.15µF

TEST PROBE

SONDE D'ESSAI

AUX PIECES
METALLIQUES
EXPOSEES

BRANCHER A UNE
TERRE CONNUE

234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121

AVIS POUR LA SECURITE

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

234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121

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

3

LC-13B2U

Specifications

Items

LCD panel 13” TFT LCD
Number of pixels 921,600 pixels VGA
Video color systems N358, N443, PAL, PAL-M, PAL-N, SECAM, PAL-60

Destination USA/Latin A/Twn
TV Standard (CCIR) NTSC/PAL-M/PAL-N

TV function TV Tuning System PLL 181 ch.

STEREO MTS+SAP

CATV 125 ch.
4-LINE COMB FILTER Yes
Brightness 430 cd/m
Lamp life 60,000 hours
Viewing angles H: 160° V: 160°
Audio amplifier 2.1 W × 2
Speakers 1-37/64 × 2-3/4 in. (4 × 7 cm), 2 pcs.

AV1 AV-IN1, S-VIDEO-IN

AV2 AV-IN2/AV-OUT
Terminals

OSD language English/French/Spanish
Power supply DC 12 V, AC 110–240 V, 50/60 Hz
Weight 8.4 lbs (3.8 kg), w/o accessories
Accessories Remote control, Batteries, Antenna cable, AC adapter,

■

Design and specifications are subject to change without notice.

COMPONENT COMPONENT-IN, AUDIO-IN

Antenna F-Type

Headphone Mini-jack for stereo (3.5 ø)

Model

2

AC cord, Cable clamps

LC-13B2U

4

Operation Manual

■

TV/VIDEO, CH (

)/( ), and VOL (+)/(–) 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 with the remote

control.

FRONT AND REAR CONTROL OPTIONS

Main unit (front view)

VOL CH MENU TV/VIDEO MAIN POWER

VOL (–)/(+)

CH (

)/( )

MENU

TV/VIDEO

MAIN POWER

Speaker

SLEEP indicator

The SLEEP indicator lights up red when

the SLEEP TIMER is set to on.

Speaker

Upper control panel

Remote sensor window

(The actual location is not visible.)

To change the vertical

angle of the LCD TV set,

tilt the screen up to 10

degrees forward or 20

degrees backward. The

TV set can also be

rotated 90 degrees

horizontally. Please adjust

the angle so that the TV

set can be watched most

comfortably.

POWER indicator

A green indicator lights when the power is

on and a red indicator lights when in the

standby mode (the indicator will not light

when the main power is off).

Note:

ANT.

VIDEO

AUDIO

L

Y

P

B

P

R

R

AUDIO

HEAD

PHONE

POWER

INPUT

DC12V

L

R

AV-IN2/OUT

COMPONENT

V

ID

E

O

S

-

V

I

D

E

O

A

U

D

I

O

L

R

A

V

-

I

N

1

Main unit (rear view)

Antenna terminal

AUDIO (L)

AUDIO (R)

HEADPHONE

POWER INPUT

(DC 12V)

AUDIO (L)

AUDIO (R)

VIDEO

Y

P

R

P

B

AV-IN2/OUT

COMPONENT

AUDIO (L)

AUDIO (R)

VIDEO

S-VIDEO

AV-IN1

LC-13B2U

5

LC-13B2U

Listening with Headphones

FRONT AND REAR CONTROL OPTIONS (Continued)

■ Before connecting a connection cord into the rear terminal, remove the

back cover. Pull the back cover carefully.

■ Put back the cover by completely inserting the 2 hooks of the back

cover into the rear of the TV set.

Removing the Back Cover

■Plug the headphone mini-plug into the HEADPHONE jack located on the rear of the TV set.

Headphones

■

Headphones are not included in the supplied accessories.

■

No sound will be heard from the main unit speakers when a headphone mini-plug is connected into the

HEADPHONE jack.

▼ On-screen display

60

VOLUME

Rear terminal >

Notes:

R

A

N

T

.

V

I

D

E

O

A

U

D

I

O

L

Y

P

B

P

R

R

A

U

D

I

O

H

E

A

D

P

H

O

N

E

P

O

W

E

R

I

N

P

U

T

D

C

1

2

V

L

R

A

V

-

I

N

2

/

O

U

T

C

O

M

P

O

N

E

N

T

1

4

7

MTS

2

5

8

0

3

6

9

100

POWER

DISPLAY

SLEEP

BRIGHT

MENU

MUTE

TV/VIDEO

CH

VOL

FLASHBACK

REMOTE CONTROL

MENU/

]/[/</> (Cursor control)

TV/VIDEO

POWER

DISPLAY*

1

SLEEP

MUTE

VOL(+)/(–)

MTS*

3

BRIGHT

FLASHBACK*

2

CH (

)/( )

Channel Select

*

1

Displays the receiving chan-

nel for 10 seconds.

*

2

Returns to the previous

channel.

*

3

Selects audio settings.

6

LC-13B2U

CONNECTING WITH EXTERNAL DEVICES

You can enjoy picture and sound by connecting a VCR or a home video game system to the terminals

located on the rear of the TV set.

When connecting an external device, turn off the power of the main unit first to prevent any possible

damage.

• Video camera

• Home video game system

• VCR

• Laser disc player

To COMPONENT terminal

* PC connection is not

possible.

* If your external device

has an S-Video terminal,

S-VIDEO connection is

recommended.

Notes:

■

For the cable, use a commercially available audio/video cord.

■

Only connect audio/video signals to AV-IN1 and 2 terminals. Connecting other signals may result in a malfunc-

tion.

■

AV-IN1 has 2 video input terminals: VIDEO and S-VIDEO. When you connect external devices to both terminals

(and if you select AV-IN1), you can only view pictures from the S-VIDEO terminal. To view the picture from the

VIDEO terminal, do not connect any external device to the S-VIDEO terminal.

■

For more information about external device connections, see the manuals of your external devices.

TUNER/BAND

DVD

AUX 1

AUX 3

AUX 2

SURROUND

ON/OFF

TUNER/BAND

DVD

AUX 1

AUX 3

AUX 2

SURROUND

ON/OFF

Example of external devices

that can be connected

To AV-IN1 or 2 terminal

* If your external device has a

component terminal, COMPO-

NENT connection is recommended

(you can view high-quality

pictures). If your external device

does not have a component

terminal, S-VIDEO connection is

recommended.

• DVD, etc.

Connecting a VCR, DVD player or a video camera (AV-IN1/2/COMPONENT)

Notes:

■

If your VCR (or other external devices) has an S-Video terminal, S-VIDEO connection is recommended. (Use an

S-video cord.)

■

When you connect external devices to both S-VIDEO and VIDEO terminals (and if you select AV-IN1), you can

only view pictures from the S-VIDEO terminal.

■

You cannot view multiple or synthesized pictures by connecting two or more external devices. When connecting

an external device, use care to connect the video and audio cables to the corresponding terminals.

■

Do not connect antennas or headphones to AV-IN2.

TUNER/BAND

DVD

AUX 1

AUX 3

AUX 2

SURROUND

ON/OFF

TUNER/BAND

DVD

AUX 1

AUX 3

AUX 2

SURROUND

ON/OFF

VIDEO

S-VIDEO

AUDIO

L

R

AV-IN1

ANT.

VIDEO

AUDIO

L

Y

P

B

P

R

R

AUDIO

HEAD

PHO

NE

POW

ER

INPUT

DC12V

L

R

AV-IN2/OUT

COMPONENT

To AV-IN2 terminal

To audio/video

output terminal

To component

input (Video)

terminal

To component

input (Audio)

terminal

To AV-IN1 terminal

To audio/video

output terminal

Video

Audio (L)

Audio (R)

Audio (L)

Audio (R)

Y

P

B

P

R

DVD Player

VCR

Video

Audio (L)

Audio (R)

Video camera

7

LC-13B2U

CONNECTING WITH EXTERNAL DEVICES (Continued)

Outputting video and audio (video output)

You can output video and audio data from the TV set through the AV output terminals (AV-OUT).

Note:

■

AV2 has 2 OUT modes (see page 24).

■

When using the S-Video input for AV-IN1, no video output will be made to the AV output terminal, but audio

output will be made for connection to external audio systems.

Notes:

Connect a VCR,

Audio amplifier,

etc.

How to fix the cables

• Fix cables and cords with the attached cable clamps

so that they do not get caught when mounting the

cover.

• Connect the cables and cords after fixing the cable

clamps (2 positions).

A

N

T

.

V

I

D

E

O

A

U

D

I

O

L

Y

P

B

P

R

R

A

U

D

I

O

H

E

A

D

P

H

O

N

E

P

O

W

E

R

I

N

P

U

T

D

C

1

2

V

L

R

A

V

-

I

N

2

/

O

U

T

C

O

M

P

O

N

E

N

T

Cable clamps

ANT.

VIDEO

AUDIO

L

Y

P

B

P

R

R

AUDIO

HEAD

PHONE

POWER

INPUT

DC12V

L

R

AV-IN2/OUT

COMPONENT

SELECTING MENU ITEMS

• This LCD TV set allows you to adjust the var ious settings using the menu screen. Select the desired

menu item by following the steps below and then refer to the indicated page for details.

1

Press MENU to display the MENU

screen.

2

Press ]/[ to select the desired

menu item.

3

Press </ > to enter.

4

Press MENU to exit.

■

The TINT display only appears when

the color system is set to N358 or

N443 or AUTO in the NTSC mode.

■

The displayed items differ depending

on the setting conditions.

■

The selected item changes to yellow.

■

Items in magenta cannot be selected.

■

TV mode

This product is factory set to comply

with the color system in the United

States (NTSC-N358). For Brazil

(PAL-M), Argentina (PAL-N) and

Uruguay (PAL-N), set the color

system before using this product.

■

COLOR SYSTEM

When you set COLOR SYSTEM to

AUTO, the AUTO mode automatically

detects the receiving signal system

and adjusts the reception system of

the TV set.

When the picture or sound is not

stable, set a specific COLOR

SYSTEM (not AUTO). The picture

and sound may be improved.

■

To return to the previous screen,

select RETURN.

■

You can adjust some settings with the

special buttons: SLEEP and BRIGHT

Selecting Menu Items

Notes:

1

4

7

MTS

2

5

8

0

3

6

9

100

POWER

DISPLAY

SLEEP

BRIGHT

MENU

MUTE

TV/VIDEO

CH

VOL

FLASHBACK

* The screen indications shown above are larger than actual for easy reading.

M

ENU

SLEEP T I

M

ER

V IDEO ADJUST

PRESE T

CLOSED CAP T ION

V–CHI P BLOCK

SET UP

SELEC T :

ENTER:

EXI T:

MENU

SLEEP T I

M

ER

SELECT :

ADJU ST :

EXIT:

MENU

RETURN

SLEEP T I

M

ER [ ––– RE

M

AIN]

PICTURE [ 30]

TINT

COLOR

BLACK LE VEL

SHARPNESS

SELECT :

ENTER:

EXIT:

MENU

VI DEO ADJUST( TV)

RETURN

[ 0]

[ 0]

[ 0]

[ 0]

BRI GHTNESS [BR IGHT ]

AUTO PO

W

ER OFF

UPS ID E

RIGHT/LEFT

AV2 IN/OUT

SELECT :

EXIT:

MENU

RETURN

[OFF ]

[NOR

M

AL ]

[NOR

M

AL ]

[IN ]

PRESE T

ADJU ST :

MOD E

[OFF ]

DATA

SELECT :

EXIT:

MENU

RETURN

[CH 1 ]

ADJU ST :

CLOSED CAPT ION

INPUT SE CRET NO.

– – – –

EXIT:

MENU

BLUE SCREEN [ OFF]

LANGUAGE

SELECT :

EXIT:

MENU

RETURN

ADJU ST :

SET UP

CH–SE TT ING

COLOR SYS TEM

RESET

[ N358]

MENU/

]/[/

</ >

8

Dimensions

10.4/264

13.1/333

LC-13B2U

16.9/429

10.4/265

7.8/198.7

5.3/134.5

3.7/92.7

2.2/55

13.1/332.2

ANT.

AV-IN2/OUT

VIDEO

AUDIO

COMPONENT

AUDIO

HEAD
PHONE

POWER
INPUT
DC12V

10.6/270

AV-IN1

VIDEO

L

AUDIO

L

R

Y

B

P

PR

L

R

R

S-VIDEO

2.2/55.3

7.0/177.8

(Unit: inch/mm)

9

LC-13B2U

REMOVING OF MAJOR PARTS

1. Remove the back cover.

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

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

4. Release the wire holders at 2 locations and peel off the tape.

5. Detach the connector from each PWB.

Back cover

2

3

3

Cabinet B

3

1

3

3

Table stand

R/C Receiver PWB

Tape

4

5

P4004

P4004

Terminal PWB

P3501

5

P4005

5

5

P3600

5

P3500

Operation PWB

P3702

5

5

SC2001SC3403

5

10

P2003

P3402

Main PWB

5

P2004

5

Jack PWB

SC5701

5

5

SC1201

P5701

SC1202

5

5

Wire holder

4

6. Remove the terminal PWB fixing screws (4 pcs.).

7. Remove the jack PWB fixing screws (2 pcs.).

8. Remove the main PWB fixing screws (2 pcs.).

9. Remove the R/C receiver PWB fixing screws (2 pcs.).

10. Remove the operation PWB fixing screws (2pcs.).

11. Remove the PWB frame fixing screws (4 pcs.)

6

LC-13B2U

7

Terminal PWB

PWB Frame

Jack PWB

8

Main PWB

11

Operation PWB

9

10

R/C Receiver PWB

11

LC-13B2U

» Precautions in handling the LCD panels

1. Work in a clean room (with humidities below 50%).

2. Be sure to wear an anti-static armband.

3. Handle the panels on an electroconductive mat.

4. Be careful not to fall, shake and shock the panels.

12. Remove the LCD display unit fixing screws (4 pcs.).

13. Detach the two diffusion sheets and reflection/deflection sheet.

14. Detach the four reflection mirrors.

15. Remove the fluorescent lamp.

16. Detach the lamp guide plate.

17. Detach the two lamp reflection sheets.

14

Reflection Mirror

12

LCD Display Unit

Fluorescent Lamp
（KLMP-0109CEZZ）

15

12

Light Guide Plate

16

13

Diffusion Sheet

Reflection/deflection Sheet

14

Lamp Reflection Sheet-1

17

（PSHEP0246CEZZ）

Lamp Reflection Sheet-2
（PSHEP0247CEZZ）

Sheilding Plate

Reflection Mirror

12

LC-13B2U

ADJUSTING PROCEDURE OF EACH SECTION

The best adjustment is made before shipping. If any position deviation is found or after part replace is performed, adjust
as follows.

1.Preparation for Adjustments

(1)Use the exclusive-use AC adapter or stable DC power supply.

AC adapter: UADP-0228CEPZ
DC power supply: 12 ± 0.5V

2.Special mode setting procedure

(1)After initialization of E2PROM the mode is changed to the adjustment mode.

[Procedure]
Connect TP2001 and TP2002 to GND, and turn on the power.

[Description]

» The initialization of microcomputer is as follows.
» AV position, DAC data, G/A data, sound processor data, and video chroma data adjustment values are taken as

defaults.

(2)Adjustment mode

[Procedure]
Short-circuit TP2001 to GND, and turn on the power.
Or short-circuit TP2002 to GND, and turn on the power.
Or holding down the [TV/VIDEO] key and [MENU] key, turn on the main power, and simultaneously press the
(inspection process) [CH "] key and [VOL– ] key to change the mode to the adjustment mode.

[Description]
The manual adjustment or adjustment through communication with the automatic machine is performed.

(3)Inspection mode

[Procedure]
Holding down the [TV/VIDEO] key and [MENU] key, turn on the power.

[Description]

» In the ordinary menu select “VIDEO ADJUST” with the [CH] key, and decide with the [VOL] key. Then select

“PICTURE”, “TINT (only NTSC)”, “COLOR”, “BLACK LEVEL”, “SHARPNESS”, “RED-BLUE”, “GREEN” and
“COLOR SYSTEM” with the [CH] key, and decide with the [VOL] key. After that, adjust values with the [VOL] key.

» VOLUME, PICTURE, TINT (only NTSC), COLOR, BLACK LEVEL, SHARPNESS, RED-BLUE, GREEN change

as follows.

Min. Center Max.

(4)Shipping setting mode

[Procedure]
Holding down the [TV/VIDEO] key and [MENU] key, turn on the main power, and simultaneously press the
(inspection process) [CH '] key and [VOL+] key to change the mode to the shipping setting mode.
Note: Keep it in mind to turn off the power immediately. If any key-in is accidentally made, the setting will be

canceled.

[Description]
User adjustment and other values are taken as defaults.
If TV is indicated as SETTING COMPLETE, setting has been completed.

13

LC-13B2U

3.Cancel of special mode

Turn off the main unit power.

4.Adjustments

Adjustment Adjusting conditions Adjusting method

1 B+ Adjustment

(R3760)

2 Model and Inch Size

setup

2

(If E

PROM is replaced)

(IC2004)

3 Counter-bias adjustment

4 Checking and modifying

the settings
(after replacing the
E2PROM)

1. Connect the DC voltmeter to
pin 38 of SC3403.

1. Go to the adjustment mode.

1. Receive a B/W channel.

2. Go to the adjustment mode.

3. Select the "COM BIAS" with
[MENU] key.

1. Go to the adjustment mode and
check the following settings.

» PRE SCALE FM/AM-M 17

» PRE SCALE SCART 15

» TV GEQ BAND 1 +1.0
» TV GEQ BAND 2 0.0
» TV GEQ BAND 3 0.0
» TV GEQ BAND 4 -1.5
» TV GEQ BAND 5 -2.0

1. Adjust the "B+ Adj" value to

5.0 ±0.02V with R3760.

1. Select "MODEL" with [MENU] key
and adjust to "B2U" with [VOL+] or
[VOL-] key.

* The color of "MODEL" must be yellow.

2. Select "INCH SIZE" and adjust to
"13" with [VOL+] or [VOL-] key.

* The color of "INCH SIZE" must be

yellow.

1. Adjust "COM BIAS" to the darkest
screen with [VOL+] and [VOL-] key.

* The color of "COM BIAS" must be

yellow.

1. See if all the settings are as
specified. If not, select an item in
question with [VOL+] or [VOL-] key
and adjust the setting as shown at
left.

* An item selected will be highlighted

in yellow.

» EXT GEQ BAND 1 +1.0
» EXT GEQ BAND 2 0.0
» EXT GEQ BAND 3 0.0
» EXT GEQ BAND 4 -1.5
» EXT GEQ BAND 5 -2.0

14