SHARP LC121M2U, LC-150M2U Service Manual

LC-121M2U LC-150M2U

SERVICE MANUAL

LCD AV MONITOR

SERVICE MANUAL

SX8Z8LC-121M2U

LCD AV MONITOR

LC-121M2U

LC-150M2U

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 be used.

1. IMPORTANT SERVICE SAFETY PRECAUTION .................................................................................... 2

MODELS LC-121M2U/150M2U

2. SPECIFICATIONS ................................................................................................................................... 4

3. PART NAMES.......................................................................................................................................... 5

4. DISASSEMBLY OF THE SET.................................................................................................................. 6

5. ADJUSTING PROCEDURE OF EACH SECTION ................................................................................... 8

6. INTEGRATED CIRCUIT TERMINAL ARRANGEMENTS ........................................................................ 19

7. TROUBLE SHOOTING TABLE................................................................................................................ 24

8. CHASSIS LAYOUT .................................................................................................................................. 29

9. SCHEMATIC DIAGRAM .......................................................................................................................... 32

10. BLOCK DIAGRAM ................................................................................................................................... 47

11. PRINTED WIRING BOARD ASSEMBLIES .............................................................................................. 49

12. REPLACEMENT PARTS LIST ................................................................................................................. 54

13. PACKING OF THE SET ........................................................................................................................... 65

MODELS

CONTENTS

LC-150M2U

Page

SHARP CORPORATION

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

LC-121M2U LC-150M2U

1. IMPORTANT SERVICE SAFETY PRECAUTION

æ Service work should be perfomed only by qualified service technicians who are

thoroughly familiar with all safety checks and servicing guidelines which follow:

LC-121M2U LC-150M2U

WARNING

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

2. Disconnect AC power before servicing.

CAUTION

FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE, REPLACE ONLY WITH SAME TYPE F701, F703 (1.6A 125V), F702 (2.5A 125V).

5A 125V

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 current in the following manner.

• Plug the AC Adapter directly into a 120-volt AC outlet, and connect the DC power cable into the monitor'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 resisor.

• Connect the resistor connection to all exposed metal parts having a return path 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 Adaptor plug connection reversed.(If necessary, a nonpolarized adaptor plug must be used only for the purpose of completing these checks.)

Any reading of 0.3V RMS(this corresponds to 0.2 milliamp. AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the receiver to the owner.

DVM

AC SCALE

1.5k ohms. 10W

0.15 µF

TEST PROBE

TO EXPOSED METAL PARTS

CONNECT TO KNOWN EARTH GROUND

SAFETY NOTICE

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

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.

Replacement Parts Lists

LC-121M2U LC-150M2U

1. PRECAUTIONS A PRENDRE LORS DE LA REPARATION

ÆÆ

Æ Ne peut effectuer la réparation qu’ un technicien spécialisé qui s’est parfaitement

ÆÆ

accoutumé à toute vérification de sécurité et aux conseils suivants.

LC-121M2U LC-150M2U

AVERTISSEMENT

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

2. Débrancher le récepteur avant toute réparation.

PRECAUTION

POUR LA PROTECTION CONTINUE CONTRE LES RISQUES D’INCENDIE, REMPLACER LE FUSIBLE PAR UN FUSIBLE DE MEME TYPE F701, F703 (1.6A 125V), F702 (2.5A 125V).

5A 125V

VERIFICATIONS CONTRE L’INCENDIE 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 l’adaptateur CA dans la prise CA de 120 V et le câble d’alimentation CC dans le jack du moniteur. (Ne pas utiliser un transformateur pour cet essai.)

• A l’aide de deux fils à pinces, brancher une résistance de 1,5kΩ 10 watts en paralléle 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.

• Raccordez la résistance à toutes les pièces exposées qui ont un chemin de retour au châssis (antenne, coffret métallique, têtes de vis, boutons, arbres de commande, emblème, etc) et mesurez une chute de tension CA à travers la résistance.

Il faut répéter les vérifications en inversant la connexion de la fiche de l'adaptateur CA (S'il y a lieu, utilisez une fiche non polarisée pour

seulement compléter ces vérifications.) Une valeur de 0,3 V RMS ou plus (correspond à 0,2 mA C.A.) est excessive et implique un danger de secousse électrique, qui devra être supprimé avant de retourner l'appareil à l'utilisateur.

DVM

Echelle CA

1.5 k ohm 10W

0,15 µF

SONDE D'ESSAI

AUX PIECES METALLIQUES EXPOSEES

BRANCHER A UNE TERRE CONNUE

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 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.

LC-121M2U LC-150M2U

2. SPECIFICATIONS

Number of Picture Elements: 921,600 (480 (V) × 640 (H) × 3 (RBG) )

Connected Terminals: Input: DC12V, VHS, S-VHS, Audio and DVD

Power Consumption (Approx.): 38 W (Connected to AC Adapter) (LC-121M2U)

Operating Temparature: –10°C~40°C

LC-121M2U LC-150M2U

Type: LCD display unit (LCD color AV monitor)

Size: 12.1" type (184.3 mm × 245.8 mm) (LC-121M2U)

15" type (305.3 mm × 229.0 mm) (LC-150M2U)

Display System: Transmitting type TN liquid crystal panel.

Driving System: TFT (Thin Film Transistor) active matrix system

Speaker Output: 0.7 W × 2 (Front)

2 W × 1 (Rear)

Speaker: 30 mm × 40 mm (Elliptic) × 2 (Front)

65 mm (Round) × 1 (Rear)

Light Source: Internal Light (Built-in fluorescent lamp)

Output: VHS, S-VHS, Audio and Headphone

Power Source: AC 100~240·50/60Hz (Connected to AC Adapter)

40 W (Connected to AC Adapter) (LC-150M2U)

Dimensions: 297.4 mm (W) × 264.6 mm (H) × 87 mm (D) (Includes Set Stand)

(LC-121M2U)

357.0 mm (W) × 309.2 mm (H) × 87 mm (D) (Includes Set Stand) (LC-150M2U)

297.4 mm (W) × 264.6 mm (H) × 62.5 mm (D) (Not Include Set Stand) (LC-121M2U)

357.0 mm (W) × 309.2 mm (H) × 62.5 mm (D) (Not Include Set Stand) (LC-150M2U)

Weight (Approx.): 2.9 kg (LC-121M2U)

3.6 kg (LC-150M2U)

Accessories: Operation Manual, Guarantee Card, AC Adapter, Remote Control,

Set Stand Mounting Screws, Wall mounting set angle and Batteries (AAA size x 2)

Specifications are subject to changed without prior notice.

LC-121M2U LC-150M2U

3. PART NAMES

LC-121M2U LC-150M2U

4. DISASSEMBLY OF THE SET

LC-121M2U LC-150M2U

1. Remove four screws (1).

2. Opening six claws ( a ), release the cabinet B. Remove the wire holder ( b ) and disconnect each connectors (2~6). Remove the cabinet B.

3. Remove two screws (7) which mounting the LCD display unit.

4. Remove soldering of copper-foil tape (8) .

5. Disconnect each connectors (9~e) from the LCD display unit.

6. Remove the cabinet A.

Push

7. Remove four screws (r) which mounting the main PWB unit.

8. Remove one screw (t) and remove the remote control receptor PWB.

9. Remove five screws (y) and GND cable.

10.Remove ten screws (u) and remove the terminal cover.

11.Remove two screws (i) and remove the switch PWB.

Cabinet B

Cabinet A

c WH

b WH

Cable

Cabinet A CCABA2338CE02 GCABA2338CEKA (LC-121M2U) CCABA2343CE02 GCABA2343CEKA (LC-150M2U)

Cabinet B CCABB2246CE02 GCABB2246CEKA (LC-121M2U) CCABB2249CE02 GCABB2249CEKA (LC-150M2U)

LC-121M2U LC-150M2U

12.Remove one screw (o) and remove the SOS shield angle.

13. Remove four screws (p) which mounting the LCD display unit.

14.Spread bites of the LCD unit (a) out to be off from claws.

15.Remove the Lamp unit (s).

Holder LHLDZ2082CEKZ (LC-121M2U) LHLDZ2085CEKZ (LC-150M2U)

LC-121M2U LC-150M2U

5. 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.

5-1. Preparation for adjustment

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

AC adapter: UADP-0183CEZZ DC power supply: 12 ± 0.5V

5-2. Special mode setting procedure

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

[Procedure] Connect TP2007 and TP2008 to GND, and turn on the power.

[Description]

• The initialization of microcomputer is as follows.

• AV position, DAC data, G/A data, and video chroma data adjustment values are taken as defaults.

(2)Change to adjustment mode

[Procedure] Short-circuit TP2007 to GND, and turn on the power. Or short-circuit TP2008 to GND, and turn on the power. Or holding down the [AV INPUT] key and [MENU] key, turn on the main power, and simultaneously press the (inspection process) [SELECT "] key and [VOL– ] key to change the mode to the adjustment mode.

LC-121M2U LC-150M2U

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

(3)Inspection mode

[Procedure] Holding down the [AV INPUT] key and [MENU] key, turn on the power.

[Description]

• In the ordinary menu select “PICTURE” with the [SELECT] key, and decide with the [VOL] key. Then select “CONTRAST”, “TINT (only NTSC)”, “COLOR”, “BLACK LEVEL”, “SHARPNESS”, “RED” , and “BLUE” with the [SELECT] key, and decide with the [VOL] key. After that, adjust values with the [VOL] key.

• In the ordinary menu select “SOUND” with the [SELECT] key, and decide with the [VOL] key. Then, select “TREBLE”, “BASS”, and “BALANCE” with the [SELECT] key, and decide with the [VOL] key. After that adjust values with the [VOL] key.

• VOLUME, CONTRAST, TINT (only NTSC), COLOR, BLACK LEVEL, SHARPNESS, RED, BLUE, TREBLE, BASS, and BALANCE change as follows.

ûMin.Û ûCenterÛ ûMax.Û

(4)Shipping setting mode

[Procedure] Holding down the [AV INPUT] key and [MENU] key, turn on the main power, and simultaneously press the (inspection process) [SELECT '] key and [VOL+] key to change the mode to the adjustment mode.

[Description] User adjustment and other values are taken as defaults. If AV1 is indicated as SETTING COMPLETE, setting has been completed.

LC-121M2U LC-150M2U

5-3. Cancel of special mode

Turn off the main unit power.

5-4. Preparation adjustment

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

AC adapter: UADP-0183CEZZ DC power supply: 12 ± 0.5V

5-5. OSD menu indication and items in case of manual adjustment

Adjusting range

Page Item Minimum Maximum Initial Remarks

1 + B – ADJ 0 255 128

MODEL M2H F2/M2H/M2U/M2E TUNER OFF 1/2/OFF AUDIO MULTIPLEX OFF OFF/ON BOOSTER 0 0/1/2/3 SYSTEM AUTO N358/N443/PAL/PAL-M/SECAM/AUTO COPY GUARD ON OFF/ON CH MEMORY OFF OFF/12/16 SECAM ON OFF/ON MULTI LANG. OFF OFF/ON TIMER OFF OFF/ON

The Ver. No. will be displayed on the lowest part of lines.

2 TA1276 DATA ~~~~

COM 0 255 128 NTSC/PALM OSC 0 255 128 N358 BRIGHTNESS 0 255 170 R CUTOFF 0 255 80 B CUTOFF 0 255 80 N358UNICOLOR 0 127 80 R DRIVE 0 127 64 B DRIVE 0 127 64 N358SCOLOR 0 31 25 N358TINT 0 127 74 DATA COPY WAIT WAIT/SEND

3 N358 R-Y PHASE 0 3 2

N358 B-Y PHASE 0 3 1 N443 BRIGHTNESS 0 255 170 N443 UNICOLOR 0 127 80 N443 SCOLOR 0 31 25 N443TINT 0 127 74 PAL-M BRIGHTNESS 0 255 170 PAL-M UNICOLOR 0 127 80 PAL-M SCOLOR 0 31 25 PAL-M TINT 0 127 74 R-ADJ 0 255 128

One blank line.

LC-121M2U LC-150M2U

4 PAL/SECAM OSC 0 255 128

5 DVD NT BRIGHTNESS 0 255 170

6 TEST PATTERN OFF ON/OFF

7 N443 R-YPHASE 0 3 2 Fixed

PAL BRIGHTNESS 0 255 170 PAL UNICOLOR 0 127 80 PAL SCOLOR 0 31 25 PAL TINT 0 127 74 BELL F0 0 255 120 B-Y BLACK LEVEL 0 15 8 R-Y BLACK LEVEL 0 15 8 SECAM BRIGHTNESS 0 255 170 SECAM UNICOLOR 0 127 80 SECAM COLOR 0 127 75 SECAM TINT 0 127 74

DVD NT UNICOLOR 0 127 80 DVD NT COLOR 0 127 75 DVD NT TINT 0 127 74 DVD NT R-YPHASE 0 3 2 DVD NT B-YPHASE 0 3 3 DVD PAL BRIGHTNESS DVD PAL UNICOLOR 0 127 80 DVD PAL COLOR 0 127 75 DVD PAL TINT 0 127 74 I2C DATA 000000 I2C DATA WAIT WAIT/SEND

G/A DATA 0000 G/A DATA WAIT WAIT/SEND DIGITAL SYNC SEP. 0 FF 87 Fixed AV NTSC H 0 7F 18 Fixed DVD NTSC H 0 7F 1C Fixed AV PAL H 0 7F 11 Fixed DVD PAL H 0 7F 15 Fixed AV SECAM H 0 7F 0E Fixed NT/PALM V 1 1F 0C Fixed PAL V 1 1F 0B Fixed SECAM V 1 1F 0B Fixed

N443 B-YPHASE 0 3 1 Fixed PAL R-YPHASE 0 3 2 Fixed PAL B-YPHASE 0 3 1 Fixed PAL-M R-YPHASE 0 3 2 Fixed PAL-M B-YPHASE 0 3 1 Fixed SECAM R-YPHASE 0 3 2 Fixed SECAM B-YPHASE 0 3 1 Fixed DVD PAL R-YPHASE 0 3 2 Fixed DVD PAL B-YPHASE 0 3 1 Fixed COLOR 0 127 60 Fixed SCONT 0 31 18 Fixed

0 255 170

LC-121M2U LC-150M2U

8 DAC 2 1ch 0 255 0 Fixed

DAC 2 2ch 0 255 0 Fixed DAC 2 3ch 0 255 0 Fixed DAC 2 4ch 0 255 0 Fixed DAC 2 5ch 0 255 0 Fixed DAC 2 6ch 0 255 0 Fixed DAC 2 7ch 0 255 0 Fixed DAC 2 8ch 0 255 0 Fixed DAC 2 9ch 0 255 0 Fixed DAC 2 10ch 0 255 0 Fixed DAC 2 11ch 0 255 0 Fixed DAC 2 12ch 0 255 0 Fixed

5-6. Service Adjusting

5-6-1. Basic Adjustment

1 +B Adjustment 1. Connect the DC voltmeter to 1. Adjust +B-ADJ to 5.1V ± 0.05V.

LC-121M2U LC-150M2U

Adjustment Adjusting conditions Adjusting method

TP1104 ( DAC 9ch )

2 Model setup 1. Select the model "M2U". When M2U is selected, the item

settings are as follows. TUNER OFF AUDIO MULTIPLEX OFF BOOSTER 0 SYSTEM AUTO COPY GUARD ON CH MEMORY OFF SECAM ON MULTI LANG. OFF TIMER OFF

3 Counter-bias adjustment 1. Set the AV1 mode to set signal 1. Adjust COM so as to minimize the

noninput state. waveform peak-peak.

2. Fit the specified adjusting instrument (DAC7ch) to the screen center.

3. Observe the adjusting instrument output on the oscilloscope.

4 NTSC / PAL-MOSC 1. Input the monoscope pattern of 1. Adjust NTSC/PALM OSC so as to

adjustment NTSC into AV1. get the normal screen.

(DAC8ch)

LC-121M2U LC-150M2U

5-6-2. AV input Adjustment

Adjustment Adjustment conditions Adjustment method

1 Brightness adjustment 1. Input the standard color bar signal 1. Adjust N358 BRIGHTNESS, and

(N358) (the same pattern as that of JPN-8CH) adjust the black level of G output so

2 R-cut off adjustment 1. Input the standard color bar signal 1. Adjust R CUTOFF so as to equalize

3 B-cut off adjustment 1. Input the standard color bar signal 1. Adjust B CUTOFF so as to equalize

4 Unicolor adjustment 1. Input the standard color bar signal 1. Adjust N358UNICOLOR, and

(N358) (the same pattern as that of JPN- adjust so as to get 100% white-

LC-121M2U LC-150M2U

of N358 into AV1. as to get DC 1.5±0.05V.

2. Connect the oscilloscope to TP821 (IC803, pin7, G output).

(the same pattern as that of JPN-8CH) the black levels of green and red. of N358 into AV1.

2. Connect the oscilloscope to TP821 (IC803, pin7, G output).

3. Connect the oscilloscope to TP819 (IC803, pin1, R output).

(the same pattern as that of JPN-8CH) the black levels of green and blue. of N358 into AV1.

2. Connect the oscilloscope to TP821 (IC803, pin7, G output).

3. Connect the oscilloscope to TP820 (IC803, pin8, B output).

8CH) of N358 into AV1. black level video component equal

2. Connect the oscilloscope to TP821 to 2.3±0.05Vp-p. (IC803, pin7, G output).

5 R DRIVE adjustment 1. Input the standard color bar signal 1. Adjust so as to get 100% white level

(the same pattern as that of JPN- identical with that of green. 8CH) of N358 into AV1.

2. Connect CH1 of oscilloscope to TP821 (G output).

3. Connect CH2 of oscilloscope to TP819 (R output).

LC-121M2U LC-150M2U

6 B DRIVE adjustment 1. Input the standard color bar signal 1. Adjust so as to get 100% white level

7 Color level adjustment 1. Input the standard color bar signal Adjust N358 SCOLOR so as to get the

LC-121M2U LC-150M2U

(the same pattern as that of JPN- identical with that of green. 8CH) of N358 into AV1.

2. Connect CH1 of oscilloscope to TP821 (G output).

3. Connect CH2 of oscilloscope to TP820 (B output).

(N358) (the same pattern as that of JPN- color bar signal blue amplitude

8CH) of N358 into AV1. (black level - peak level) equal to 2.5V

2. Connect the oscilloscope to TP820 ± 0.05Vp-p. (B output).

8 Tint adjustment 1. Input the standard color bar signal 1. Adjust N358 TINT so as to get the

(N358) (the same pattern as that of JPN- color bar signal magenta amplitude

8CH) of N358 into AV1. (black level-peak level) equal to 2.0

2. Connect the oscilloscope to TP820 ± 0.05Vp-p. (B output).

9 N443/PAL-M adjustment 1. Position the cursor on DATA COPY 1. The indication changes from WAIT

and press VOL key. to SEND, and after the lapse of one

second WAIT is restored. Thus, N443, PAL-M adjustment is completed.

10 4V adjustment 1. Connect the DC voltmeter to TP1110 1. Adjust R-ADJ to 4.0V ± 0.05V.

( DAC 6ch )

11 PAL/SECAM OSC 1. Input the monoscope pattern of PAL 1. Adjust PAL/SECAM OSC so as to

adjustment into AV1. get the normal screen.

(DAC8ch)

LC-121M2U LC-150M2U

12 Brightness adjustment 1. Input the standard color bar signal 1. Adjust PAL BRIGHTNESS, and

13 Unicolor adjustment 1. Input the standard color bar signal 1. Adjust PAL UNICOLOR, and adjust

LC-121M2U LC-150M2U

(PAL) of PAL into AV1. adjust the black level of G output

2. Connect oscilloscope to TP821 so as to get DC 1.5 ±0.05V. (IC803, pin7, G output).

(PAL) of PAL into AV1. so as to get 100% white-black level

2. Connect oscilloscope to TP821 video component equal to 2.3±0.05 (IC803, pin7 , G output ). Vp-p.

14 Color level adjustment 1. Input the standard color bar signal Adjust PAL SCOLOR so as to get the

(PAL) (the same pattern as that of E-12CH) color bar signal blue amplitude

of PAL into AV1. (black level - peak level) equal to 2.5V

2. Connect the oscilloscope to TP820 ±0.05Vp-p. (B output).

15 Tint adjustment 1. Input the standard color bar signal 1. Adjust PAL TINT so as to get the color

(PAL) (the same pattern as that of E-12CH) bar signal magenta amplitude (black

of PAL into AV1. level-peak level) equal to 2.0±

2. Connect the oscilloscope to TP820 0.05Vp-p. (B output).

LC-121M2U LC-150M2U

16 BELL f0 adjustment 1. Connect the oscilloscope to 1. Adjust BELL f0 so as to minimize the

17 Brightness adjustment 1. Input the standard color bar signal 1. Adjust SECAM BRIGHTNESS, and

18 Unicolor adjustment 1. Input the standard color bar signal 1. Adjust SECAM UNICOLOR, and

LC-121M2U LC-150M2U

TP2851. a-level.

(SECAM) (the same pattern as that of E-10CH) adjust the black level of G output to

of SECAM into AV1. DC 1.5±0.05V.

2. Connect oscilloscope to TP821 (IC803, pin7, G output).

(SECAM) (the same pattern as that of E-10CH) adjust so as to get 100% white-black

of SECAM into AV1. level video component equal to 2.3±

2. Connect oscilloscope to TP821 0.05Vp-p. (IC803, pin7, G output ).

19 Color level adjustment 1. Input the standard color bar signal Adjust SECAM COLOR so as to get

(SECAM) (the same pattern as that of E-10CH) the color bar signal blue amplitude

of SECAM into AV1. (black level - peak level) equal to 2.5V

2. Connect the oscilloscope to TP820 ±0.05Vp-p. (B output).

20 Tint adjustment 1. Input the standard color bar signal 1. Adjust SECAM TINT so as to get

(SECAM) (the same pattern as that of E-10CH) the color bar signal magenta amplitude

of SECAM into AV1. (black level - peak level) equal to 2.0V

2. Connect the oscilloscope to TP820 ±0.05Vp-p. (B output).

LC-121M2U LC-150M2U

5-6-3. Component input Adjustment

Adjustment Adjusting conditions Adjusting method

1 Brightness adjustment 1. From SG, input the 100% white color Adjust DVD NT BRIGHTNESS, and

(NTSC) bar signal of NTSC into conponent adjust the black level of G output so

2 Unicolor adjustment 1. From SG, input the 100% white color Adjust DVD NT UNICOLOR, and

(NTSC) bar signal of NTSC into conponent adjust so as to get 100% white-

LC-121M2U LC-150M2U

terminal. as to get DC 1.5±0.05V.

2. Connect oscilloscope to TP821 (IC803, pin7, G output).

terminal. black level video component equal

2. Connect oscilloscope to TP820 to 2.3±0.05Vp-p. (IC803, pin8).

3 Color level adjustment 1. From SG, input the 100% white color Adjust DVD NT COLOR so as to get

(NTSC) bar signal of NTSC into conponent the color bar signal blue amplitude

terminal. (black level - peak level) equal to

2. Connect the oscilloscope to TP820 2.8V±0.05Vp-p. (B output).

4 Tint adjustment 1. From SG, input the 100% white color Adjust DVD NT TINT so as to get the

(NTSC) bar signal of NTSC into conponent color bar signal magenta amplitude

terminal. (black level - peak level) equal to 2.3V

2. Connect the oscilloscope to TP820 ±0.05Vp-p. (B output).

LC-121M2U LC-150M2U

5 Brightness adjustment 1. From SG, input the 100% white color Adjust DVD PAL BRIGHTNESS, and

6 Unicolor adjustment 1. From SG, input the 100% white color Adjust DVD PAL UNICOLOR, and

LC-121M2U LC-150M2U

(PAL) bar signal of PAL into conponent adjust the black level of G output so

terminal. as to get DC 1.5±0.05V.

2. Connect oscilloscope to TP821 (IC803, pin7, G output).

(PAL) bar signal of PAL into conponent adjust so as to get 100% white-

terminal. black level video component equal

2. Connect oscilloscope to TP820 to 2.3±0.05Vp-p. (IC803, pin8, B output).

7 Color level adjustment 1. From SG, input the 100% white color Adjust DVD PAL COLOR so as to get

(PAL) bar signal of PAL into conponent the color bar signal blue amplitude

terminal. (black level - peak level) equal to

2. Connect the oscilloscope to TP820 2.8V±0.05Vp-p. (B output).

8 Tint adjustment 1. From SG, input the 100% white color Adjust DVD PAL TINT so as to get

(PAL) bar signal of PAL into conponent the color bar signal magenta amplitude

terminal. (black level - peak level) equal to

2. Connect the oscilloscope to TP820 2.3V±0.05Vp-p. (B output).

9 Tint adjustment Position the cursor on N358 TINT. Lower unconditionally the value by

10 points.

LC-121M2U LC-150M2U

5-7. Shipping setting

(1)[Procedure]

Holding down the [AV INPUT] key and [MENU] key, turn on the main power, and simultaneously press the (inspection process) [SELECT '] key and [VOL+] key to change the mode to the adjustment mode.

(2)[Indication]

AV1 is indicated as SETTING COMPLETE.

(3)[Description]

Mode is memorized as SETTING COMPLETE. Menu setting descriptions are as follows.

VOLUME 30 CONTRAST 30 (AV1 / AV2 / COMPONENT) TINT 0 (AV1 / AV2 / COMPONENT) (ONLY NTSC) COLOR 0 (AV1 / AV2 / COMPONENT) SHARPNESS 0 (AV1 / AV2 / COMPONENT) RED 0 (AV1 / AV2 / COMPONENT) BLUE 0 (AV1 / AV2 / COMPONENT) COLOR SYSTEM AUTO (AV1 / AV2 / COMPONENT) TREBLE 0 BASS 0 BALANCE 0 BRIGHTNESS BRIGHT UPSIDE NORMAL RIGHT / LEFT NORMAL AV2 IN / OUT IN

LC-121M2U LC-150M2U

AV1

SETTING COMPLETE

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