FUNAI LCD A1506 – B1506 – C1506 – D1506 - INITIALIZE TV - SERVICE MODE - INITIAL SETTING - FLICKER ADJUSTMENT - WHITE BALANCE ADJUSTMENT - MAIN POWER & BACK-LIGHT CONTROL CIRCUIT [SCHEMATIC]

FUNAI LCD A1506 – B1506 – C1506 – D1506 - INITIALIZE TV - SERVICE MODE - INITIAL SETTING - FLICKER ADJUSTMENT - WHITE BALANCE ADJUSTMENT - MAIN POWER & BACK-LIGHT CONTROL CIRCUIT [SCHEMATIC]

HOW TO INITIALIZE THE TV
To put the program back at the factory-default, initialize the LCD television as the following procedure.

• Turn the power on. (Use main power on the TV unit.)
• To enter the service mode, press [STANDBY], [2], [7], [1], and [MUTE] buttons on the remote control unit in that order within 5 seconds. 
• To cancel the service mode, press [STANDBY] button on the remote control.
• To initialize the LCD television, press “DISPLAY” button on the remote control unit.
• Confirm "FF" indication on the upper right of the screen.

SERVICE MODE

Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is important to perform these adjustments only after all

repairs and replacements have been completed.

Do not attempt these adjustments unless the proper equipment is available.

TO ENTER SERVICE MODE

1. Turn the power on. (Use main power on the TV unit.)
2. Press [STANDBY], [2], [7], [1], and [MUTE] buttons on the remote control unit in that order within 5 seconds.
3. To cancel the service mode, press [STANDBY] button on the remote control.

INITIAL SETTING

Set the each initial data as shown on table.

FLICKER ADJUSTMENT

• Enter the Service mode.
• Press [2] button on the remote control unit.

The following screen appears.

If Flicker Adjustment is not fit, the screen becomes the following.

Press [CH UP / DN] buttons on the remote control unit so that flash stops.

WHITE BALANCE ADJUSTMENT

The following adjustment normally is not attempted in the field. Only when replacing the LCD Panel then adjust as a preparation.

• To mix red, green and blue beams correctly for pure white.
• Symptom of Misadjustment:  White becomes bluish or reddish.

• Operate the unit for more than 20 minutes.
• Input the White Purity.
• Set the color analyzer to the CHROMA mode and bring the optical receptor to the center on the LCD-Panel surface after zero point calibration as shown above. [Note:The optical receptor must be set perpendicularly to the LCD Panel surface.]

[RF/AV2(CVBS)]

• Enter the Service mode. Press “VOL DN” button on the remote control unit and select “C/D/S-1” mode. [AV1(RGB)].  Enter the Service mode. Press “VOL DN” button on the remote control unit and select “C/D/S-2” mode.

[RF/AV2(CVBS)] à (APL 80%)

• Press “6” button to select “DB(C/D/S-1)” for Blue adjustment. Press “4” button to select “DR(C/D/S-1)” for Red adjustment. When “x” value and “y” value are not within specification, adjust “DB (C/D/S-1)” or “DR (C/D/S-1)”. Refer to “Initial Setting.”

[RF/AV2(CVBS)] à (APL 40%)

• Press “3” button to select “COB(C/D/S-1)” for Blue adjustment. Press “1” button to select “COR(C/D/S-1)” for Red adjustment. When “x” value and “y” value are not within specification, adjust “COB (C/D/S-1)” or “COR (C/D/S-1)”. Refer to “Initial Setting.”

[AV1(RGB)] à (APL 80%)

• Press “6” button to select “C-DB(C/D/S-2)” for Blue adjustment. Press “4” button to select “C-DR(C/D/S-2)” for Red adjustment. When “x” value and “y” value are not within specification, adjust “C-DB(C/D/S-2)” or “C-DR(C/D/S-2)”. Refer to “ Initial Setting.”

[AV1(RGB)] à (APL 40%)

• Press “3” button to select “C-COB(C/D/S-2)” for Blue adjustment. Press “1” button to select “C-COR(C/D/S-2)” for Red adjustment. When “x” value and “y” value are not within specification, adjust “C-COB(C/D/S-2)” or “C-COR(C/D/S-2)”. Refer to “ Initial Setting.”
• Turn the power off and on again. (Main power button on the TV unit.)

MAIN POWER [SMPS] SCHEMATIC  [Click on image to Enlarge]

BACK-LIGHT CONTROL SCHEMATIC