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11. ADJUSTMENT

1. Approximately 30 minutes should be allowed for warm up before proceeding.

2. Adjustments should be undertaken only on those necessary elements since most of them

have been carefully preset at the factory.

3. ESD protection is needed before adjustment.

NO.

FUNCTION

V-com Voltage

Eeprom Initial

White Balance

Geometry

Adjustment Conditions and Precautions:

(A). Power supply voltage:

AC 110/120V ± 10% 60 Hz ± 5%, AC 220/240V ± 10% 50 Hz ± 5%.

(B). Warm up time:

The display must be power ON for at least 30 minutes at full white pattern before

starting alignments.

This is especially critical in color temperature and white balance adjustments.

(C). Signals: reference the front detail specifications and timing table.

Video : reference the front detail specifications.

1. Adjustment of V-com Voltage:

A. Timing : 1024x768@60Hz.

B. Pattern : The picture of " Shut down windows" or Full screen pixel ON/OFF pattern.

C. Adjust R124 to let the center of the screen no flash.

2. Eeprom Initial:

A. Timing : 1024x768@60Hz.

B. Pattern : Cross hatch.

C. Switch off the power and press the " ▲ " and " 2 " key simultaneously, then switch

on the power. At this time we can enter into the factory mode when press the " 1 "key.

D. Select the "EEPROM INIT" item and press " 2 "key to reset the Eeprom.

3. White Balance Adjustment :

A. Timing : 1024x768@60Hz.

B. Pattern : Full white.

C. Set CA110 color analizer at the center of screen and along a perpendicular to the

screen at 20cm from the display.

D. Move " ▼ " key to select the " WHITE BALANCE" item in the factory mode and

press " 2 "key, then the white balance will be auto dadjusted.

Color temperature verification: (Set Brightness and Contrast to Maximum)

AL512/513 Service Manual

DESIGNATION

R124 (VCOM ADJ)

Function Key