Magnavox 19ME601B Service Manual download pdf (Page 28)

5-3 LC9EA

The White Balance Adjustment should be

performed when replacing the LCD Panel

or Digital Main CBA.

3. White Balance Adjustment

Purpose: To mix red and blue beams correctly for

pure white.

Symptom of Misadjustment: White becomes bluish

or reddish.

1. Operate the unit for more than 60 minutes.

2. Enter the Service mode.

3. Press [VOLUME DOWN] button three times on the

remote control unit to select “Drive setting” mode.

“Drive” appears on the screen.

4. Set the color analyzer at the CHROMA mode and

zero point calibration. Bring the optical receptor

pointing at the center of the LCD-Panel.

Note: The optical receptor must be set

perpendicularly to the LCD Panel surface.

5. Press [3] button to select the “HDB” for High Drive

Blue adjustment. (“HDB” appears on the screen.)

6. Press [MENU] button. The internal Raster signal

appears on the screen. (“Internal (Single)”

appears on the upper right of the screen as shown

below.)

7. Press [CHANNEL UP/DOWN] buttons to adjust

the color temperature becomes 12000°K

0.272 / y

0.278 ±0.002).

8. Press [1] button to select the “HDR” for High Drive

Red adjustment (“HDR” appears on the screen.)

and press [CHANNEL UP/DOWN] buttons to

adjust the color temperature.

9. If necessary, adjust the “HDB” or “HDR” again.

10. Press [6] button to select the “LDB” for Low Drive

Blue adjustment (“LDB” appears on the screen.)

and press [CHANNEL UP/DOWN] buttons to

adjust the color temperature.

11. Press [4] button to select the “LDR” for Low Drive

Red adjustment (“LDR” appears on the screen.)

and press [CHANNEL UP/DOWN] buttons to

adjust the color temperature.

12. If necessary, adjust the “LDB” or “LDR” again.

13. Press [VOLUME DOWN] button to shift to the

“Debugging Message” mode.

If there is no message under “[WB]” section, this

adjustment completes.

If “Drive settings are NG. Retry.” is displayed,

repeat above steps from 5. to 12. Then check

“Debugging Message” again. If “Drive settings are

NG. Retry.” is displayed, replace the LCD Panel or

Digital Main CBA.

14. To cancel or to exit from the White Balance

Adjustment, press [CH RETURN] or [PREV CH]

button.

ITEM

SPECIFICATION

Color temperature

x= 0.272 ± 0.002

y= 0.278 ± 0.002

Input Signal

Internal pattern

(40/70% raster)

Measurement point Screen center

M. EQ.

CA-310 (KONICA MINOLTA

Luminance meter) or

measuring instrument as

good as CA-310.

Aging time

60min.

(Retail MODE/100IRE Raster

HDMI 1080i@60)

MODE setting of TV

Shipment setting/

Retail MODE

Ambient

temperature

25°C ± 5°C

Color Analyzer

Perpendicularity

To avoid interference from ambient

light, this adjustment should be

performed in a dark room.

Internal (Single)

HDB 0

Internal (Single)

LDB 0

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Magnavox 19ME601B Service Manual Page 28

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