Sharp LC-20B9U-S, LC-20B9U-SM Service Manual

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

SERVICE MANUAL

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.

MODELS

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

SHARP CORPORATION

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

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

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

» REMOVING OF MAJOR P ARTS ........................................................................................................ ..........9

» ADJUSTING PROCEDURE OF EACH SECTION .....................................................................................13

» PUBLIC MODE SETTING PROCEDURE .................................................................................................. 23

» TROUBLE SHOOTING TABLE ..................................................................................................................29

» MAJOR IC INFORMATION.........................................................................................................................34

» BLOCK DIAGRAM......................................................................................................................................42

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

» DESCRIPTION OF SCHEMATIC DIAGRAM .............................................................................................46

» SCHEMATIC DIAGRAM

ËR/C, LED Unit ..........................................................................................................................................47

ËMAIN Unit.................................................................................................................................................48

ËSUB Unit ..................................................................................................................................................72

ËPOWER Unit ............................................................................................................................................76

ËINVERTER Unit .......................................................................................................................................86

» PRINTED WIRING BOARD ASSEMBLIES................................................................................................88

» REPLACEMENT PARTS LIST..................................................................................................................109

» PACKING OF THE SET............................................................................................................................127

Page

S45H7LC20B9US

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

CAUTION: FOR CONTINUED

PROTECTION AGAINST A RISK OF FIRE REPLACE ONL Y WITH SA ME TYPE F6701 (6.3A, 250V) AND F7701 (3.15A, 250V)FUSE.

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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

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 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.

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, 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.

A V

DVM

AC SCALE

1.5k ohm 10W

TO EXPOSED METAL PARTS

CONNECT TO KNOWN EARTH GROUND

0.15 µF

TEST PROBE

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

PRECAUTION: POUR LA

PROTECTION CONTINUE CONTRE LES RISQUES D'INCENDIE, REMPLACER LE FUSIBLE P AR UN FUSIBLE DE MEME TYPE F6701 (6.3A, 250V), F7701 (3.15A, 250V).

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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

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

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.

VERIFICA TIONS 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 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 110-240V. (Ne pas utiliser de transformateur d'isolation pour cet essai).

• A l'aide de deux fils à pinces, brancher une résistance de 1.5kΩ 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 en travers de la résistance.

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

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

DVM

ECHELLE CA

1.5k ohm 10W

0.15 µF

SONDE D'ESSAI

AUX PIECES METALLIQUES EXPOSEES

BRANCHER A UNE TERRE CONNUE

A V

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

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

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

SPECIFICATIONS

Items

LCD panel 20" Advanced Super View & BLACK TFT LCD Number of dots 2,359,296 dots XGA Video color systems N358, N443, PAL, PAL-M, PAL-N, SECAM, PAL-60

TV Standard (CCIR) NTSC/PAL-M/PAL-N

TV function

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

Y/C FILTER 3D Y/C FILTER Brightness

Viewing angles H: 170° V: 170° Audio amplifier 2.1 W × 2 Speakers ø2.0 in. (ø5.0 cm), 2 pcs.

INPUT1 AUDIO-IN, COMPONENT-IN INPUT2 AUDIO-IN, COMPONENT-IN INPUT3 AUDIO-IN, VIDEO-IN, S-VIDEO-IN

Terminals INPUT4/OUTPUT AUDIO-IN, VIDEO-IN/AUDIO-OUT, VIDEO-OUT

INPUT5 PC Connector: 15-pin mini D-sub PC AUDIO: Mini-jack for stereo (ø3.5 mm) Antenna F-Type Headphone Mini-jack for stereo (ø3.5 mm)

OSD language English/Spanish/French Power supply AC 110-240V, 50/60Hz Power consumption 81 W (0.6 W standby): AC 120V Weight 19.4 lbs. (8.8 kg), w/o accessories

ËAs

a part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for the LCD TV

set

improvement

without prior notice. The performance specification figures indicated are nominal values of production units. There

may

some

deviations from these values in individual units.

Model

LC-20B8U/LC-20B9U

480 cd/m

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

OPERATION MANUAL

Part Names of the Main Unit

Controls

• 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.

Headphone jack (

)

Plug the headphone mini-plug into the headphone

jack located

on the front of the main unit.

OPC (Optical Picture Control)

sensor

Remote sensor

OPC (Optical Picture Control) indicator

The OPC indicator lights up green when "OPC" is

set to "ON".

POWER/WAKE UP TIMER indicator

POWER/WAKE UP TIMER indicator lights up green when the

power is on, and red when in the standby mode (the indicator will

not light when the main power is off), and orange when the wake-

up timer is set (the indicator will light when in the standby mode).

To change the vertical angle of the LCD TV

set, tilt the screen up to 2.5 degrees forward

or 10 degrees backward. The LCD TV set can

also be rotated up to 12 degrees to right and

left. Please adjust the angle so that the LCD

TV set can be watched most comfortably.

POWER

Upper control panel

INPUT

CH (Channel) (

)/(

)

VOL (Volume)

(–)/(+)

Speaker

Tilt the display by grabbing onto the

carrying handle while securely holding

down the stand with your other hand.

How to adjust the angle

Listening with Headphones

ËPlug

the headphone mini-plug into the headphone jack located on the front of the main unit.

• 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.

Ë On-screen display

VOLUME

Adjust

the sound volume

using VOL

(

)/(

–

) on

the

remote

control.

Headphones

Speaker

Terminals

)

(

Carrying handle

Rear View

AUDIO (L)

AUDIO (R)

AUDIO (L)

AUDIO (R)

AUDIO

ANALOG RGB

S-VIDEO

AUDIO (L)

AUDIO (R)

VIDEO

AUDIO (L)

AUDIO (R)

VIDEO

INPUT2

(COMPONENT)

ANT

(Antenna terminal)

AC INPUT

(AC 110-240 V)

INPUT5

(PC-IN)

INPUT4/

OUTPUT

INPUT1

(COMPONENT)

INPUT3

Round lock for

Kensington Security

Standard slot*

)

(

How to Fix the Cables

• Secure cables and cords with the supplied cable clamp so that they do not get caught when mounting the cover.

Cable clamp

Pull down the hook

to open the cover.

* 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.

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

Part Names of the Remote Control

DISPLAY

Displays the receiving channel and

the current time for 10 seconds.

AV MODE

Selects preferred AV MODE.

BACKLIGHT

Adjusts the brightness of the screen.

' /" /\/| (Cursor control)

Selects a desired item on the screen.

Displays the menu screen.

INPUT

Switches the input source between

INPUT1, INPUT2, INPUT3, INPUT4,

INPUT5 (PC) and TV mode.

Displays Closed Caption subtitles.

FLASHBACK

Returns to the previous channel.

CH (

)/(

)

Selects a channel.

Channel Select

Sets the channel.

POWER

Switches the Liquid Crystal

Television power on or standby.

PIC.FLIP

Sets the orientation of the picture.

SLEEP

Sets the sleep timer.

MENU RETURN

Returns to the previous screen.

ENTER

Executes a command.

MUTE

Mutes the sound.

AUDIO ONLY

Outputs audio without screen image.

VOL (+)/(–)

Sets the volume.

MTS

Selects audio settings.

TV Signals in Your Region

This product is factory set to comply with the TV broadcasting system in the United States. For Brazil, Argentina and Uruguay,

set the color system according to the country before using this product by following the table below.

U.S.A.

Color: NTSC NTSC (N358) NTSC (N358)

TV ch: US ch US ch US ch

Not required or N/A

Canada, Mexico, Color: NTSC NTSC (N358) NTSC (N358)

Latin America TV ch: US ch US ch US ch

Not required or N/A

Brazil

Color: PAL-M NTSC (N358) NTSC (N358) Set color system to

TV ch: US ch US ch US ch PAL-M

Argentina, Color: PAL-N NTSC (N358) NTSC (N358) Set color system to

Uruguay TV ch: US ch US ch US ch PAL-N

• The 3 Dimensional Y/C separation circuit* only works when the color system is set to N358 in TV mode and Video mode.

* The 3 Dimensional Y/C separation circuit is used to remove flickering and color bleeding.

* The 3 Dimensional Y/C separation circuit does not function when S-VIDEO or COMPONENT signals are input.

broadcasting

system

Factory setting of color system User setting

TV Video TV/Video

Country

Installing Batteries in the Remote Control

Before using the LCD TV set for the first time, install the two "AAA" size batteries supplied in the remote control. When the

batteries become depleted and the remote control fails to operate, replace the batteries with new "AAA" size batteries.

Open the battery cover.

Insert two "AAA" size batteries.

Close the battery cover.

Ë Place batteries with their

terminals corresponding

to the (+) and (–)

indications in the battery

compartment.

Caution!

Precautions regarding batteries

Ë Improper use of batteries can result in a leakage of chemicals and/or explosion. Be sure to follow the instructions below.

• Place batteries with their terminals corresponding to the (+) and (–) indications.

• Different types of batteries have different characteristics. Do not mix batteries of different types.

• Do not mix old and new batteries. Mixing old and new batteries can shorten the life of new batteries and/or cause old

batteries to leak chemicals.

• Remove batteries as soon as they are depleted. Chemicals that leak from batteries can cause a rash. If chemical

leakage is found, wipe it off with a cloth.

• The batteries supplied with the LCD TV set may have a shorter operating time due to storage conditions.

• If the remote control is not to be used for a long period of time, remove the batteries from the remote control.

Preparation

Ë Engaging the lower

claw with the remote

control, close the

cover.

Using the Remote Control

Ë Use the remote control by pointing it towards the remote sensor

window of the main unit. Objects between the remote control and

sensor window may prevent proper operation.

Cautions regarding use of the remote control

Ë Do not apply shock to the remote control. In addition, do not

expose the remote control to liquids, and do not place it in an area

with high humidity.

Ë Do not install or place the remote control in direct sunlight. The

heat may cause deformation of the unit.

Ë The remote control may not work properly if the remote sensor

window is in direct sunlight or strong lighting. In such a case,

change the angle of the lighting or main unit, or operate the

remote control closer to the remote sensor window.

Ë Slide the cover while

pressing the (

) part.

Headphone jack

OPC indicator

POWER/WAKE UP TIMER

indicator

Remote sensor

OPC sensor

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

DIMENSIONS

Unit: inch (mm)

)(

1319/32(345)

/64(444)

/8(638)

/32(134)

/32(242)

/64(410.5)

(389)

(54)

(443)

(308.4)

(256)

(100)

(45)

315/16(100)

/8(92)211/16(68)

(413)

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

REMOVING OF MAJOR PARTS

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

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

3. Remove the carrying handle fixing screws (4 pcs.).

4. Remove the terminal cover.

5. Remove the terminal screws (4 pcs.).

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

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

8. Remove the stand angle fixing screws (5 pcs.).

9. Disconnect all the connectors from all the PWBs.

Cabinet B

Carrying Handle

Cabinet A

Terminal Cover

Stand

Stand Cover

P6706

P6705

P6704

P6703

P6702

P6707

SC7701

SC7702

P7705

SC2004

SC2003

SC1201

SC2001

SC3402

SC4001

Stand Angle

Inverter PWB

Sub PWB

Power PWB

R/C, LED PWB

Main PWB

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

10. Remove the inverter PWB fixing screws (3 pcs.).

11. Remove the power PWB fixing screws (6 pcs.).

12. Remove the sub PWB fixing screws (4 pcs.).

13. Remove the chassis frame fixing screws (3 pcs.).

14. Remove the R/C, LED PWB fixing screws (2 pcs.).

15. Remove the main PWB fixing screws (4 pcs.).

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

Power PWB

Chassis Frame

Sub PWB

Inverter PWB

Speaker (R)

Speaker (L)

Main PWB

R/C, LED PWB

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

» Precautions in handling the LCD panel

1. Handle it in a clean room. (above 50% humidity)

2. The worker must wear an earth band.

3. Be careful not to drop, vibrate and shock the panel.

4. Use an ionizer. (within 30 cm)

17. Remove the three lock screws from the LCD panel, and detach the LCD panel unit.

18. Remove the prism sheet (H), (V), diffusion sheet and diffusion plate.

19. Remove the lamp unit from the lamp holder (top). Then detach the (bottom)-left and (bottom)-right lamp holders.

20. Remove the reflection sheets (top) and (bottom) from the back shield.

Lamp Holder (Bottom)-Left (LHLDZA368WJKZ)

Lamp Holder (Top), x2 (LHLDZA365WJKZ)

Lamp Unit, x6 (KLMP-A034WJZZ)

Reflection Sheet (Bottom) (PSHEPA206WJZZ)

Lamp Holder (Bottom)-Right (LHLDZA367WJKZ)

Back Shield (PSLDMA653WJFW)

Lamp Holder (Top), x2 (LHLDZA365WJKZ)

Diffusion Sheet (PSHEPA204WJZZ)

Prism Sheet (H) (PSHEPA203WJZZ)

Diffusion Plate (PCOVUA035WJZZ)

Prism Sheet (V) (PSHEPA208WJZZ)

20" LCD Panel Unit

Reflection Sheet (Top) (PSHEPA205WJZZ)

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

Step Part No. Description

1 QCNW-C458WJQZ

Extension Cable 80-pin Main (SC1201)-LCD Panel (CN1) 2 QCNW-D402WJQZ Extension Cable 23-pin Main (SC2001)-Sub (P3401) 3 QCNW-C461WJQZ Extension Cable 15-pin Main (SC2003)-Power (P7703) 4 QCNW-D402WJQZ Extension Cable 23-pin Main (SC2004)-Power (P7702)

6, 8 QCNW-C460WJQZ

Extension Cable 19-pin Power (SC7701)-Inverter (P6701)

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

1. Disconnect the FFC for connection between the main PWB (SC1201) and LCD panel (CN1), and then connect the service-specific extension FFC (flat cable) (QCNW-C458WJQZ).

2. Disconnect the SC2001 side of the lead from between the main PWB (SC2001) and the sub PWB (P3401), and then connect the service-specific extension cord (QCNW-D402WJQZ).

3. Disconnect the SC2003 side of the lead from between the main PWB (SC2003) and the power PWB (P7703), and then connect the service-specific extension extension cord (QCNW-C461WJQZ).

4. Disconnect the SC2004 side of the lead from between the main PWB (SC2004) and the power PWB (P7702), and then connect the service-specific extension cord (QCNW-D402WJQZ).

5. Remove the lock screws (4pcs.) from the main PWB, detach the PWB from the chassis frame, and then turn it over to service.

»Precautions in servicing the Chip Parts side (backside) of the inverter PWB unit

6. Disconnect the SC7701 side of the lead from between the power PWB (SC7701) and the inverter PWB (P6701), and then connect the service-specific extension cord (QCNW-C460WJQZ).

7. Remove the lock screws from the inverter PWB and then turn it over to service.

»Precautions in servicing the Chip Parts side (backside) of the power PWB unit (main/sub PWB)

8. Disconnect the SC7701 side of the lead from between the power PWB (SC7701) and the inverter PWB (P6701), and then connect the service-specific extension cord (QCNW-C460WJQZ).

9. Remove the PWB fixing screws (main unit: 4 pcs., sub unit: 4 pcs., power unit: 6 pcs.)

P6701 SC7701

P7702

SC2004

SC1201

CN1

SC2003

SC2001

P3401P7703

Main PWB (Side-B)

Power PWB (Backside)

Sub PWB

Inverter PWB

(Backside)

Power PWB Sub PWB

Main PWB

Inverter PWB

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

ADJUSTING PROCEDURE OF EACH SECTION

1. Preparations before adjustment

(1) Keep the AC power cable directly plugged in a wall outlet.

AC110V~240V

[1] Adjustment procedures 1-1. Adjusting the checker

Power on (initialization) → Setting the model number and screen size

1-2. Finishing process adjustments

Assembling → Power on → Adjustment process mode (bus connector) → AD converter level, common bias, TAMP and white balance (cut-off and gain) adjustments

[2] Entering the checker mode/adjustment process mode 2-1. Calling the checker mode * Keep KEY-5 (pin (82) of microprocessor) at "L" level and turn on the power.

KEY-4 KEY-5 Mode shift

H H Normal mode (Fresh data written and saved on EEPROM)

L H Shift to adjustment process mode

Operation with master ROM settings in the checker mode (EEPROM still brand-new after the checker mode)

EEPROM initialized and microprocessor's master settings written (process adjustment values not yet written)

2-2. Calling the adjustment process mode There are two ways to call this mode. * Keep KEY-4 (pin (81) of microprocessor) at "L" level and turn on the power. * For servicing:1 Hold down the "INPUT" and "VOL (–)" keys at once, and turn on the power switch. ("K" appears

at the top left onscreen to indicate that the checker mode is on.) → 2 Press the "CH (Ù)" and "VOL (–)" keys at once. (The adjustment process mode screen shows up.)

.....

T o quit the mode, turn of f the power (using the power

switch on the set or the remote controller).

[3] Key operation ËBasic operation *Using the "CH (ù)/(Ù)" keys, select a receiving channel. *Using the "INPUT" key, select an input. *Using the "cursor up/down keys, select an adjustment item. (When the "cursor down" key is pressed at the bottom

item of a page, the top item on the next page will be selected. When the "cursor up" key is pressed at the top item

of a page, the bottom item on the previous page will be selected.) *Using the "VOL (+)/(–)" or "cursor right/left" keys, adjust the selected item. *Press the "MENU" key, and the next item will be selected. (When the "MENU" key is pressed at the bottom item

of a page, the top item on the next page will be selected.) ËHierarchical shift

*Press the "ENTER" key on any item other than I2C DATA on Page 9, the setting page of the item will show up. *To quit the setting page, press the "FLASHBACK" key.

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

(Onscreen display of adjustment process menu page 1)

0112

I E P V E

O N R U

D C R B C T

E H

I I

Z O

R D

E E

13S14E15T16 17 18 19 20 21 22A23

2 2

8 0 0 F 1 F

26 0 1 2 3 4 5 6 7 8

[5] Adjustments 5-1. AD converter level adjustment 1 D3 input

1) Feed only the Y component of D3 75% color bar signal. Equipment used: LEADER LT446 Signal name: COLOR BAR 75% Setting: 01: 1920 x 1080 / 60i H: 33.72 kHz, V: 29.97 Hz

2) Turn on the AUTO GAIN-OFFSET1 item on adjustment process page 7.

2 PC input

1) Feed the VGA white 0% signal.

2) Turn on the AUTO OFFSET2 item on adjustment process page 8.

3) Feed the VGA white 100% signal.

4) Turn on the AUTO GAIN2 item on adjustment process page 8.

5-2. Common bias adjustment

1) Adjust the "COM BIAS" setting on adjustment process page 2 so that flickering gets to minimum. With the setting changed, the flicker check built-in test pattern will show up.

5-3. T AMP adjustment

1) Receive the 75% standard color bar signal in the TV input mode.

2) If the "YDATA" reading on adjustment process page 2 is not within the range in the table below, readjust the "NTSC TAMP" item on the same page and make sure the "YDATA" reading is as specified. * Note that the setting range may be different from model to model.

3) Then add 6 to the "NTSC TAMP" setting and enter this value for "PAL-M TAMP" and "PAL-N TAMP".

Model LC-20B8U LC-20B9U

Setting 155-158 155-158

[4] Initialization 4-1. Connect both pins (81) and (82) of IC2001 (microprocessor) to GND, and turn on the power. 4-2. Make sure the model number "A628" is selected. *Note: This setting cannot be changed. 4-3. Make sure "20" (inches) is selected for the screen size. *Note: This setting cannot be changed.

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

Reference (Onscreen display of adjustment process menu page 2)

5-4. White balance adjustment

1) Adjustment procedure (Call the AV input mode with INPUT3 or INPUT4.) Adjust the RGB CUTOFF2 setting for the 40% white level, and the RGB-GAIN setting for the white 80% level. (1) Adjustment [Input signal] White 80% (191 gradations) and white 40% (92 gradations) signals [Adjustment value] RGB CUTOFF2 and RGB-GAIN settings on adjustment process page 3

Adjustment spec. Inspection spec.

White 80% x=0.291 ±0.006 ±0.012 Radius from center point

y=0.300 ±0.006 ±0.012 Radius from center point

(Reference brightness: 300 cd/m2)

White 40% x=0.276 ±0.006 ±0.012 Radius from center point

y=0.282 ±0.006 ±0.012 Radius from center point

(Reference brightness: 50 cd/m2)

Cut-off (RGB CUTOFF2)

: Fix the G setting at 0. Vary the R and B settings. Adjustable range ±30. Gain (RGB-GAIN): Reduce the settings of the two stronger colors. Adjustable range 0 to -70. (The values are based on the Minolta CA-210.)

[6] Factory settings 6-1. Hold down the "INPUT" and "VOL (–)" keys on the set at once, and turn on the power. Hold down the "CH (ù)"

and "VOL (+)" keys at once. ("SETTING COMPLETE" appears on the screen.) *Note: Immediately after the factory settings have been made, turn off the power switch. (The next time the power is turned on, the set gets started in the EZ SETUP mode. An extra key-in just after the factory setting may cause the set to malfunction.)

0212

C T Y T N P P

O A D A T A A

M M

S L L

T P C

H T

A T T

A A

P M M

P P

12 13 14 15 16 17 18 19 20 21

4 1 1 1

5 5 5 5 8 9 9

0 5 7 8 5 1 1

24 25 26 0 1 2 3 4 5 6 7 8

Y Data

(White 75%)

SETTING COMPLETE

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

Setting ranges Initial values

(TV) (INPUT1) (INPUT2) (INPUT3)

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

(Except PC) (PC)

ON/OFF OFF OFF

BRIGHT/NORMAL/DARK/VARIABLE VARIABLE VARIABLE

(STANDARD) (DYNAMIC) (DYNAMIC (FIXED)) (MOVIE) (GAME) (PC)

(INPUT4)

17 17 17 7

17(BRIGHT)

0 ~ 60

30 40 40 30

– – – – –

BRIGHTNESS

-30 ~ +30

30 0000 0 0000 0000

COLOR -30 ~ +30

+5 +5 0

TINT -30 ~ +30

SHARPNESS -10 ~ +10

(Except PC) (PC)

ADVANCED COLOR TEMP. USER/HIGH/MIDDLE/LOW MIDDLE

GREEN 0 BLUE 0

0 0 0

I/P SETTING INTERLACE/PROGRESSIVE PROGRESSIVE

ON/OFF ON/OFF

QUICK SHOOT ON/OFF ON

YES/NO NO Always select "NO" to move to the setting screen. YES/NO NO Always select "NO" to move to the setting screen.

AUDIO TREBLE -10 ~ +10 0

BASS -10 ~ +10 0

BALANCE -10(L) ~ +10 (R)

INPUT1~4/INPUT5 (PC)/TV

RESET YES/NO NO Always select "NO" to move to the setting screen.

SETUP CH-SETTING YES/NO

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

YES/NO YES

AIR/CABLE AIR/CABLE AIR

– –

MTS STEREO/SAP/MONO STEREO CLOCK SET

INPUT5 (PC)

AUTO/MANUAL

AUTO AUTO/[2]~[69] or [1]~[125] AUTO MANUAL DST

ON/OFF

TIME 12 : 00AM~11 : 59PM 12 : 00AM The clock setting is yet to be made. Follow the display at left to move to the MANUAL CLOCK setting screen.

ON/OFF ON

AUTO

IN/OUT /OUT× IN

V-CHIP BLOCK SECRET No. 4-DIGIT ENTRY CLEAR

MPAA G

PG NONE

NONE NONE NONE NONE NONE

NONE

PG-13 R NC-17 X

TV GUIDELINES TV-Y

TV-Y7 NONE TV-G TV-PG (NONE)/BLOCK

(NONE)/BLOCK

NONE TV-14 (NONE)/BLOCK NONE TV-MA (NONE)/BLOCK NONE BLOCK CONTENT (BLANK)/BLOCK BLANK (UN BLOCK)

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

(BLANK)/BLOCK

BLANK (UN BLOCK)

FV BLANK (UN BLOCK)

(NONE)/BLOCK NONE

NONE

C8+ G

PG NONE 14+ NONE 18+ NONE

CAN.FRENCH RATINGS G NONE

8 ans+ NONE 13 ans+ NONE 16 ans+ NONE 18 ans+ NONE

STATUS ON/OFF OFF

OFF/CC1/CC2/T1/T2 OFF

(TV)

INPUT4 IN/OUT

(INPUT3) (INPUT4)

(* N358/PAL-M/PAL-N IN TV MODE) N358 AUTO

PC SETTING

AUTO

FINE SYNC. H-POS. -30 ~ +30 0

V-POS. -15 ~ +15 0 CLOCK -15 ~ +15 0

1024x768 (60Hz)

PHASE -15 ~ +15 0 RESET NO Always select "NO" to move to the setting screen.

LANGUAGE ENGLISH/ESPANOL/FRANCAIS

OPTION (TV) (INPUT1) (INPUT2) (INPUT3) (INPUT4)

AUDIO ONLY ON/OFF BLUE SCREEN ON/OFF

OFF/30/60/90/120/150MIN OFF (CLEAR) Always select "OFF" to move to the setting screen.

TIMER ON/OFF

TIME 12 : 00AM~11 : 59PM 12 : 00AM

VOL. 0~60 20

ENABLE/DISABLE DISABLE

ENABLE/DISABLE DISABLE POWER MANAGEMENT ON/OFF OFF PICTURE FLIP NORMAL/MIRROR/ROTATE/UPSIDE DOWN NORMAL

(Items not on the menu) Initial values EZ SETUP AUTO START ON LAST CHANNEL

2ch

LAST TV/INPUT TV FLASH BACK 2ch SKIP DATA_CATV ALL SKIP SKIP DATA_AIR ALL SKIP VOLUME 20 LINE OUT LEVEL (AT VAO) 0 EDS CH (FOR AUTO) NOT ESTABLISHED

HOTEL MODE POWER ON FIXED VARIABLE

VOLUME FIXED VARIABLE REMOTE CONTROL USER CONTROL

RESPOND

ON SCREEN DISPLAY

YES

START MODE NORMAL INPUT MODE FIXED VARIABLE

ENGLISH

YES

NONE

CH SEARCH

PC SOUND SELECT

NOISE CLEAN

RESET

BACKLIGHT

OPC

RED

FILM MODE

TIME DISPLAY

OFF

MIDDLE

4 : 3/16 : 9/ZOOM/STRETCH

CH1~125/INPUT1~INPUT4

OFF

ENGLISH

YES/NO

INPUT SIGNAL

COLOR SYSTEM

CLOSED CAPTION

VIEW MODE

SLEEP TIMER WAKE UP TIMER

CHANNEL

NO SIGNAL OFF NO OPERATION OFF

MAXIMUM VOLUME

MENU BUTTON

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

1024×768 (60Hz)/800×600(60Hz)/ 800×600(56Hz)/640×480(60Hz)

CH2

4 : 34 : 34 : 34 : 34 : 3

1 (DARK) ~ 9 (NORMAL) ~ 17 (BRIGHT)

CONTRAST

RESET

EZ-SETUP

START

CH MEMORY

CAN.ENGLISH RATINGS

6-2. Intial value of factory settings

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

Page No. Item

Initial

Function

Response precautions on servicing

Value (Do not change other items than designated.)

1 MODEL A628

MODEL NAME SELECTION CANNOT BE CHANGED.

INCH SIZE 20

SCREEN SIZE SELECT (20-INCH AND USED FOR INITIALIZATION, NOT 13/15-INCH SETTINGS NOT MODIFIABLE FOR OTHER CASES. SWITCHABLE IN CASE OF DATA FOR OTHER CASES. DATA REWRITE DIFFERENT SYSTEMS) AND READJUSTMENT REQUIRED WHEN

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 410

COMMON BIAS ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.

—

TAMP L 155

Y LOWER LIMIT SETTING AT TAMP ADJUSTMENT

NOT USED

YDATA —

DATA READ VALUE AT TAMP ADJUSTMENT

SEE THE ADJUSTMENT PROCEDURES.

TAMP H 158

Y UPPER LIMIT SETTING AT TAMP ADJUSTMENT

NOT USED NTSC TAMP 90 T AMP 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.

WHITE BALANCE ADJUSTMENT

R CUTOFF2 0 RED CUT-OFF ADJUSTMENT 2 REFER TO METHOD OF ADJUSTMENT. G CUTOFF2 0 GREEN CUT-OFF ADJUSTMENT 2 REFER TO METHOD OF ADJUSTMENT. B CUTOFF2 0 BLUE CUT-OFF ADJUSTMENT 2 REFER TO METHOD OF ADJUSTMENT. R-GAIN 0 WHITE BALANCE ADJUSTMENT 2 REFER TO METHOD OF ADJUSTMENT . G-GAIN 0 WHITE BALANCE ADJUSTMENT 2 REFER TO METHOD OF ADJUSTMENT. B-GAIN 0 WHITE BALANCE ADJUSTMENT 2 REFER TO METHOD OF ADJUSTMENT. RGB GAMMA 1 RGB γ COEFFICIENT SETTING NOT USED

1125I/750P AD ADJUSTMENT

7 AD9883 DATA 0

AD9883 DATA WRITE AND READ NOT USED AD9883 DATA WAIT WRITE AND READ EXECUTED NOT USED AUTO GAIN-OFFSET1 OFF

AD9883 GAIN AND OFFSET AUTO ADJUSTMENT OFF/RUN

REFER TO METHOD OF ADJUSTMENT.

AD R GAIN 140

1125I, 750P INPUT RED GAIN ADJUSTMENT

REFER TO METHOD OF ADJUSTMENT.

AD G GAIN 140

1125I, 750P INPUT GREEN GAIN ADJUSTMENT

REFER TO METHOD OF ADJUSTMENT.

AD B GAIN 140

1125I, 750P INPUT BLUE GAIN ADJUSTMENT

REFER TO METHOD OF ADJUSTMENT.

AD R OFFSET 56

1125I, 750P INPUT RED OFFSET ADJUSTMENT

REFER TO METHOD OF ADJUSTMENT.

AD G OFFSET 56

1125I, 750P INPUT GREEN OFFSET ADJUSTMENT

REFER TO METHOD OF ADJUSTMENT.

AD B OFFSET 56

1125I, 750P INPUT BLUE OFFSET ADJUSTMENT

REFER TO METHOD OF ADJUSTMENT.

RGTAR A3

1125I, 750P INPUT RED GAIN ADJUSTMENT TARGET

NOT USED

GGTAR A3

1125I, 750P INPUT GREEN GAIN ADJUSTMENT TARGET

NOT USED

BGTAR A3

1125I, 750P INPUT BLUE GAIN ADJUSTMENT TARGET

NOT USED

RGCAL —

Y LEVEL, CHROMA CALCULATION DISPLAY

NOT USED

GGCAL —

Y LEVEL, CHROMA CALCULATION DISPLAY

NOT USED

BGCAL —

Y LEVEL, CHROMA CALCULATION DISPLAY

NOT USED

ROCAL —

CLAMP RANGE Y LEVEL, WHITE LEVEL CALCULATION DISPLAY

NOT USED

GOCAL —

CLAMP RANGE Y LEVEL, WHITE LEVEL CALCULATION DISPLAY

NOT USED

BOCAL —

CLAMP RANGE Y LEVEL, WHITE LEVEL CALCULATION DISPLAY

NOT USED

BASIC SETTING

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".

DEFAULT CHART OF ADJUSTMENT PROCESS 1ST HIERARCHICAL ITEMS

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

Page No. Item

Initial

Function

Response precautions on servicing

Value (Do not change other items than designated.)

PC AD ADJUSTMENT

8 AUTO GAIN2 OFF

AD9883 GAIN AUTO ADJUSTMENT OFF/RUN

REFER TO METHOD OF ADJUSTMENT.

AUTO OFFSET2 OFF

AD9883 OFFSET AUTO ADJUSTMENT OFF/RUN

REFER TO METHOD OF ADJUSTMENT.

PCAD R GAIN 100

PC INPUT RED GAIN ADJUSTMENT

REFER TO METHOD OF ADJUSTMENT.

PCAD G GAIN 100

PC INPUT GREEN GAIN ADJUSTMENT

REFER TO METHOD OF ADJUSTMENT. PCAD B GAIN 100 PC INPUT BLUE GAIN ADJUSTMENT REFER TO METHOD OF ADJUSTMENT. PCAD R OFFSET 56

PC INPUT RED OFFSET ADJUSTMENT

REFER TO METHOD OF ADJUSTMENT. PCAD G OFFSET 56

PC INPUT GREEN OFFSET ADJUSTMENT

REFER TO METHOD OF ADJUSTMENT. PCAD B OFFSET 56

PC INPUT BLUE OFFSET ADJUSTMENT

NOT USED RGTAR E6

PC INPUT RED GAIN ADJUSTMENT TARGET

NOT USED GGTAR E6

PC INPUT GREEN GAIN ADJUSTMENT TARGET

NOT USED BGTAR E6

PC INPUT BLUE GAIN ADJUSTMENT TARGET

NOT USED RGCAL —

Y LEVEL, CHROMA CALCULATION DISPLAY

NOT USED GGCAL —

Y LEVEL, CHROMA CALCULATION DISPLAY

NOT USED BGCAL —

Y LEVEL, CHROMA CALCULATION DISPLAY

NOT USED ROCAL —

CLAMP RANGE Y LEVEL, WHITE LEVEL CALCULATION DISPLAY

NOT USED GOCAL —

CLAMP RANGE Y LEVEL, WHITE LEVEL CALCULATION DISPLAY

NOT USED BOCAL —

CLAMP RANGE Y LEVEL, WHITE LEVEL CALCULATION DISPLAY

NOT USED

TABLE OF VARIOUS SETTINGS

9 I2C DATA 0

I2C BUS CONTROL IC DATA WRITE AND READ

NOT USED I2C DATA 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.

Page No. Item

Initial

Function

Response precautions on servicing

Value (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 WAIT 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

AUDIO ADJUSTMENT

SOUND3 BAND1 MIN TV -0350

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER -0350

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED BAND1 CNT TV +0450

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER +0450

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED BABD1 MAX TV +1200

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER +1200

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED BAND2 MIN TV 0000

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER 0000

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED BAND2 CNT TV +0300

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER +0300

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED BABD2 MAX TV +0600

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER +0600

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED BAND3 TV -0150

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER -0150

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

Page No. Item

Initial

Function

Response precautions on servicing

Value (Do not change other items than designated.)

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 +0150

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER +0150

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND4 MAX TV +0450

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER +0450

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND5 MIN TV -0500

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER -0500

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND5 CNT TV +0300

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER +0300

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

BAND5 MAX TV +1100

EQUALIZER SETTING (WITH TV INPUT)

NOT USED

OTHER +1100

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

NOT USED

Page No. Item

Initial

Function

Response precautions on servicing

Value (Do not change other items than designated.)

DVP ADJUSTMENT PROCESS ITEMS

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

READ TEMP ---.--°C —

TEMPERATURE DATA READING DISPLAY

NOT USED

DVP3 N358 TV CONT 144 N358 IMAGE SETTING (TV) NOT USED

N358 AV CONT 144

N358 IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED N358 TV BRIGHT 122 N358 BRIGHTNESS SETTING (TV) NOT USED N358 AV BRIGHT 122

N358 BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED N358 TV COLOR 52 N358 COLOR DENSITY SETTING (TV) NOT USED N358 AV COLOR 52

N358 COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED N358 TV TINT 138 N358 TINT SETTING (TV) NOT USED N358 AV TINT 138

N358 TINT SETTING (COMPOSITE, S VIDEO)

NOT USED N358 TV SHARP V 100

N358 V PICTURE QUALITY SETTING (TV)

NOT USED N358 AV SHARP V 100

N358 V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED N358 TV SHARP H1 200

N358 H PICTURE QUALITY SETTING 1 (TV)

NOT USED N358 AV SHARP H1 200

N358 H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED N358 TV SHARP H2 150

N358 H PICTURE QUALITY SETTING 2 (TV)

NOT USED N358 AV SHARP H2 160

N358 H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

DVP4 N443 AV CONT 144

N443 IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED N443 AV BRIGHT 122 N443

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED N443 AV COLOR 52

N443 COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED N443 AV TINT 138

N443 TINT SETTING (COMPOSITE, S VIDEO)

NOT USED N443 AV SHARP V 100

N443 V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED N443 AV SHARP H1 200

N443 H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED N443 AV SHARP H2 160

N443 H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

DVP5 PAL AV CONT 144

PAL IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED PAL AV BRIGHT 122

PAL BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED PAL AV COLOR 52

PAL COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED PAL AV TINT 138

PAL TINT SETTING (COMPOSITE, S VIDEO)

NOT USED PAL AV SHARP V 100

PAL V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED PAL AV SHARP H1 200

PAL H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED PAL AV SHARP H2 160

PAL H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

DVP6 SECAM AV CONT 144

SECAM IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED SECAM AV BRIGHT 122

SECAM BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED SECAM AV COLOR 52

SECAM COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED SECAM AV TINT 138

SECAM TINT SETTING (COMPOSITE, S VIDEO)

NOT USED SECAM AV SHARP V 100

SECAM V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED SECAM AV SHARP H1 200

SECAM H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED SECAM AV SHARP H2 160

SECAM H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

Page No. Item

Initial

Function

Response precautions on servicing

Value (Do not change other items than designated.)

DVP7 PAL60 A V CONT 144

PAL60 IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL60 AV BRIGHT 122

PAL60 BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL60 AV COLOR 52

PAL60 COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL60 AV TINT 138

PAL60 TINT SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL60 AV SHARP V 100

PAL60 V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED

PAL60 AV SHARP H1 200

PAL60 H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED

PAL60 AV SHARP H2 160

PAL60 H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

DVP8 PAL-M TV CONT 144 PAL-M IMAGE SETTING (TV) NOT USED

PAL-M AV CONT 144

PAL-M IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED PAL-M TV BRIGHT 122 PAL-M BRIGHTNESS SETTING (TV) NOT USED PAL-M AV BRIGHT 122

PAL-M BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED PAL-M TV COLOR 52

PAL-M COLOR DENSITY SETTING (TV)

NOT USED PAL-M AV COLOR 52

PAL-M COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED PAL-M TV TINT 138 PAL-M TINT SETTING (TV) NOT USED PAL-M AV TINT 138

PAL-M TINT SETTING (COMPOSITE, S VIDEO)

NOT USED PAL-M TV SHARP V 100

PAL-M V PICTURE QUALITY SETTING (TV)

NOT USED PAL-M AV SHARP V 100

PAL-M V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED PAL-M TV SHARP H1 200

PAL-M H PICTURE QUALITY SETTING 1 (TV)

NOT USED PAL-M AV SHARP H1 200

PAL-M H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED PAL-M TV SHARP H2 150

PAL-M H PICTURE QUALITY SETTING 2 (TV)

NOT USED PAL-M AV SHARP H2 160

PAL-M H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

DVP9 PAL-N TV CONT 144 PAL-N IMAGE SETTING (TV) NOT USED

PAL-N AV CONT 144

PAL-N IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED PAL-N TV BRIGHT 122 PAL-N BRIGHTNESS SETTING (TV) NOT USED PAL-N AV BRIGHT 122

PAL-N BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED PAL-N TV COLOR 52

PAL-N COLOR DENSITY SETTING (TV)

NOT USED PAL-N AV COLOR 52

PAL-N COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED PAL-N TV TINT 138 PAL-N TINT SETTING (TV) NOT USED PAL-N AV TINT 138

PAL-N TINT SETTING (COMPOSITE, S VIDEO)

NOT USED PAL-N TV SHARP V 100

PAL-N V PICTURE QUALITY SETTING (TV)

NOT USED PAL-N AV SHARP V 100

PAL-N V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED PAL-N TV SHARP H1 200

PAL-N H PICTURE QUALITY SETTING 1 (TV)

NOT USED PAL-N AV SHARP H1 200

PAL-N H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED PAL-N TV SHARP H2 150

PAL-N H PICTURE QUALITY SETTING 2 (TV)

NOT USED PAL-N AV SHARP H2 160

PAL-N H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

DVP10 525I CONT 144 525I IMAGE SETTING (TV) NOT USED

525I BRIGHT 122 525I BRIGHTNESS SETTING (TV) NOT USED 525I COLOR 78

525I COLOR DENSITY SETTING (TV)

NOT USED 525I TINT 146 525I TINT SETTING (TV) NOT USED 525I SHARP V 100

525I V PICTURE QUALITY SETTING (TV)

NOT USED 525I SHARP H1 160

525I H PICTURE QUALITY SETTING 1 (TV)

NOT USED 525I SHARP H2 160

525I H PICTURE QUALITY SETTING 2 (TV)

NOT USED 525P CONT 144

525P IMAGE SETTING (COMPOSITE, S VIDEO)

NOT USED 525P BRIGHT 122

525P BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

NOT USED 525P COLOR 78

525P COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

NOT USED 525P TINT 146

525P TINT SETTING (COMPOSITE, S VIDEO)

NOT USED 525P SHARP V 100

525P V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

NOT USED 525P SHARP H1 120

525P H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

NOT USED 525P SHARP H2 120

525P H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

NOT USED

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

Page No. Item

Initial

Function

Response precautions on servicing

Value (Do not change other items than designated.)

DVP11 625I CONT 144 625I IMAGE SETTING (TV) NOT USED

625I BRIGHT 122 625I BRIGHTNESS SETTING (TV) NOT USED 625I COLOR 78

625I COLOR DENSITY SETTING (TV)

NOT USED 625I TINT 146 625I TINT SETTING (TV) NOT USED 625I SHARP V 100

625I V PICTURE QUALITY SETTING (TV)

NOT USED 625I SHARP H1 160

625I H PICTURE QUALITY SETTING 1 (TV)

NOT USED 625I SHARP H2 160

625I H PICTURE QUALITY SETTING 2 (TV)

NOT USED 625P CONT 144 625P IMAGE SETTING (TV) NOT USED 625P BRIGHT 122 625P BRIGHTNESS SETTING (TV) NOT USED 625P COLOR 78

625P COLOR DENSITY SETTING (TV)

NOT USED 625P TINT 146 625P TINT SETTING (TV) NOT USED 625P SHARP V 100

625P V PICTURE QUALITY SETTING (TV)

NOT USED 625P SHARP H1 120

625P H PICTURE QUALITY SETTING 1 (TV)

NOT USED 625P SHARP H2 120

625P H PICTURE QUALITY SETTING 2 (TV)

NOT USED

DVP12 1125I CONT 144 1125I IMAGE SETTING (TV) NOT USED

1125I BRIGHT 122 1125I BRIGHTNESS SETTING (TV) NOT USED 1125I COLOR 78

1125I COLOR DENSITY SETTING (TV)

NOT USED 1125I TINT 146 1125I TINT SETTING (TV) NOT USED 1125I SHARP V 100

1125I V PICTURE QUALITY SETTING (TV)

NOT USED 1125I SHARP H1 100

1125I H PICTURE QUALITY SETTING 1 (TV)

NOT USED 1125I SHARP H2 100

1125I H PICTURE QUALITY SETTING 2 (TV)

NOT USED 750P CONT 144 750P IMAGE SETTING (TV) NOT USED 750P BRIGHT 122 750P BRIGHTNESS SETTING (TV) NOT USED 750P COLOR 78

750P COLOR DENSITY SETTING (TV)

NOT USED 750P TINT 146 750P TINT SETTING (TV) NOT USED 750P SHARP V 100

750P V PICTURE QUALITY SETTING (TV)

NOT USED 750P SHARP H1 100

750P H PICTURE QUALITY SETTING 1 (TV)

NOT USED 750P SHARP H2 100

750P H PICTURE QUALITY SETTING 2 (TV)

NOT USED

Page No. Item

Initial

Function

Response precautions on servicing

Value (Do not change other items than designated.)

DEFAULT CHART OF ADJUSTMENT PROCESS TUNER ITEMS

BASIC 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 LSYNC 150

SYNC JUDGMENT THRESHOLD (TV)

NOT USED HSYNC 162

SYNC JUDGMENT THRESHOLD (TV)

NOT USED LSYNC2 150

SYNC JUDGMENT THRESHOLD (FOR TV AFT CHANNEL (1-CH) SELECT)

NOT USED HSYNC2 162

SYNC JUDGMENT THRESHOLD (FOR TV AFT CHANNEL (1-CH) SELECT)

NOT USED AVSYNC 1

SYNC DETERMINATION THRESHOLD (EXTERNAL INPUT)

COMPSYNC 3

SYNC JUDGMENT THRESHOLD (COLOR DIFFERENCE INPUT)

NOT USED EDS TEST 10

DURATION UNTIL JUDGMENT OF NO EDS TIME DATA (SECONDS)

NOT USED

TUNER2 AFT FARTIME 50

CHANNEL PRESET TIME ADJUSTMENT 1

NOT USED AFT NEARTIME 30

CHANNEL PRESET TIME ADJUSTMENT 2

NOT USED AFT NEARTIME 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 ON 10

CHANNEL PRESET SYNC JUDGMENT,

NOT USED

CONTINUOUS MATCHING TIMES(CH SEARCH, AIR/CABLE JUDGMENT, CLOCK SYNC JUDGMENT)

SYNC WIDTH 1

CHANNEL PRESET SYNC JUDGMENT, THRESHOLD

NOT USED

(SYNC PROVIDED JUST AFTER THE MAXIMUM-TOMINIMUM DIFFERENCE COMES SMALLER)

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

Page No. Item

Initial

Function

Response precautions on servicing

Value (Do not change other items than designated.)

OTHERS

OTHERS1 DAC DATA —

DAC-RELATED GENERAL-PURPOSE VARIABLE SETTINGS

NOT USED

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 AUTO 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 BRIGHTNESS

NOT USED

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

OTHERS

OTHERS2 CLOSED CAPTION 15 CLOSED CAPTION THRESH LEVEL NOT USED

AUTO CLOCK DISPLAYED ON THE 2ND, 3RD AND 4TH LINES FROM BOTTOM FOR US-DESTINED MODELS

DEFAULT CHART OF OTHER ADJUSTMENT PROCESS ITEMS

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

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 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.

2 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.

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

2. How to exit Public Mode

There are the following ways to quit the public mode setup screen. » Turn off "PUBLIC MODE" in the adjustment process mode. (✩) ← This way alone is not for quitting the setup

screen, but for quitting the mode itself.

» Turn 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 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

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

5. On Setting Items

* "EZ-SETUP" discussed below indicates "EZ-SETUP after the first power-on". (1) MAXIMUM VOLUME

(2) VOLUME FIXED

Selection Default Explanation Limit in Setting

Exception

Remarks

Adjustment from 1 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.

» Setting is valid only for the speakers of the unit. (As for the headphone, the sound volume can be set up

to 60 irrespective of the limit.)

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

pre-adjusted value.

» When the sound volume is set higher than the MAX setting by the adjusting process or headphone, 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 "Variable" setting, the sound volume had been conventionally set at 1 but this operation has been

abolished (and follows the last memory).

» The sound volume for the ON-time is not set at 1 either and the sound volume set value of the ON-timer

before executing the hotel mode is held.

» Setting is valid only for the speakers of the unit. (As for the headphone, the sound volume can be set up

to 60 irrespective of the limit.)

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

pre-adjusted 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 or headphone, it should be set back to

the sound volume preset by sound volume fixing level when the adjustment process ends or when the headphone is removed.

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

(3) VOLUME FIXED LEVEL

(4) R/C BUTTON

(5) PANEL BUTTON

(6) MENU BUTTON

Selection Default Explanation Limit in Setting Exception Remarks

Adjustment from 1 to 60 (no loop) 20 The sound volume to be fixed by

"Volume fixed" is determined.

None None Setting is valid only when

"Volume fixed" is selected for "fixed".

This must be confirmed actually by changing also the sound volume in accordance with setting.

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 set-

ting.

» 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.

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

(7) ON SCREEN DISPLAY

(8) INPUT MODE START

Selection Default Explanation

Limit in Setting

Others

Exception

Remarks

Selection between "Yes" , "Limited" (loop provide) Yes 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.

Ex.) 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. Ex.) 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

» In "No" setting, the setting of "SOUND ONLY MODE" is changed to "OFF" and selecting operation is

made prohibited.

» 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~)" "COMPONENT" "AV1" and "AV2" (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 display of all channels is stopped and it is treated as an input source. At this time, 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 order of appearance of options in the hotel menu should agree with the order of toggles by input

switching key.

» The display of channel setting menu and the channel setting operation are prohibited (except for MCL). » 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.

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

(9) INPUT MODE FIXED

Selection Default Explanation

Limit in Setting

Exception Remarks

Selection between

"Variable" 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 "Variable".

1When the setting of

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

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

TROUBLE SHOOTING TABLE

No or Wrong Picture

Are the waveforms at

pins (84), (89) and (90)

of IC801 as specified?

Check IC801 and its

peripheral circuits as

well as the LCD panel

voltage and waveform.

Check the related lines,

IC801 itself and its

peripheral circuits.

Are the waveforms at the signal

input pins of IC801 as specified?

TV/Composite … Pin (40)

S Video … Pins (42) and (31)

Component … Pins (21), (33) and

(44)

Check the IC801 signal

input line.

Check IC801 and its

peripheral circuits.

Yes

Does the IC801 test pattern appear

properly?

No Power (Power LED indicator still in red)

Go to the adjustment process mode.

Move the cursor to ERROR NO RESET

and click on it (to reset to zero).

Turn off the power.

Is the power turned on again?

MODEL A628

INCH SIZE 20

ERROR NO RESET 0

PUBLIC MODE OFF

V-CHIP 1

EXT CONTROL OFF

VER ROM

A GAIBU

***

Note:

This model is equipped with the lamp error detection function that detects the current

flowing into the fluorescent lamp and protects the backlight lamp drive circuit.

If a lamp error is detected, the microprocessor interrupts the unit and the ERROR NO

RESET setting will go up.

When the ERROR NO RESET setting has reached "5", the microprocessor turns and

keeps off the unit's power. To resume the power, take the above procedure to clear the

ERROR NO RESET setting.

Check the following points.

(1) Backlight lamp

(2) Inverter circuit Sub PWB F6701, Q6719, Q6720, Q6721, Q6722, Q6723,

Q6724 and their peripheral parts as well as pins (187) of IC801, Q7752

(3) Lamp error detection circuit Q6703, Q6704, IC6701 and their peripheral parts

as well as pin (42) of IC2001

LC-20B8U-S LC-20B9U-S LC-20B9U-SM

TROUBLE SHOOTING TABLE (Continued)

Check the secondary

load of T7001.

Is pin (10) of IC7002

and IC7001 at "H"?

Check the load of

IC7002 and IC7001 and

its peripheral circuits.

Is the primary

oscillation wave of

T7001 as specified?

Are the secondary

outputs of T7001 +5V, -

12V, +35V and +9V?

Is there DC 12V input at

T7001 and pin (8) of

IC7301?

Is the output voltage of

IC7002 and IC7001 as

specified?

Check the load of IC701

thru IC703.

Check T7701, IC7701

and their peripheral

circuits.

Check the primary side

of T7001, IC7301 and

its peripheral circuits.

Disconnect F7701. Is

the load short-circuited?

Is pin (187) of IC801 at

"H" or pulse?

Check the line in

question, IC801 and its

peripheral circuits.

Check the primary side

of T7001, Q7001 and

its peripheral circuits.

Check pin (72) of

IC2001, pin (12) of

SC2004 and pin (12)

of P7702.

No video and audio output (no power) No fluorescent lamp light-up

No No

Are Q6719-Q6724 free

from short-circuit?

Check Q6719-Q6724 and

their peripheral part.

Are F7701 as specified?

Replace F7701.

Is F6701 normal?

Replace F6701.

Yes

Replace and check the

fluorescent lamp.

Yes

Is the oscillation

waveform of the primary

side of T6701-T6712

normal?

Check the peripheral

parts of Q6719-Q6724

and the connecting cable.

Yes

Yes Yes

Check the microprocessor's adjustment process menu for wrong settings.

+ 98 hidden pages

Sharp LC-20B9U-S, LC-20B9U-SM Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual