Service manual

LC-20VM2

LC-121M2E

LC-150M2E

Adjustment Adjusting conditions Adjusting method

4 RGB Contrast adjustment 1. Input the test pattern to RGB. 1. Adjust RGB CONTRAST so as to

(RGB CONTRAST Item) 2. Connect the oscilloscope to TP821 get 2.5±0.1Vp-p between the 100%

(IC316, pin7, G output). white and GND.

5 RGB R DRIVE adjustment 1. Input the test pattern to RGB. 1. Adjust so as to get 100% white level

(RGB R DRIVE Item) 2. Connect CH1 of the oscilloscope to identical with that of green.

TP821 (IC316, pin7, G output).

3. Connect CH2 of the oscilloscope to

TP819 (IC315, pin1, R output).

6 RGB B DRIVE adjustment 1. Input the test pattern to RGB. 1. Adjust so as to get 100% white level

(RGB B DRIVE Item) 2. Connect CH1 of the oscilloscope to identical with that of green.

TP821 (IC316, pin7, G output).

3. Connect CH2 of the oscilloscope to

TP820 (IC316, pin1, B output).

6-6-9. Finished adjustment

(1)N358 finished adjustment

Adjustment Adjusting conditions Adjusting method

1 Confrontation bias 1. A confrontation adjustment pattern is 1. It is adjusted so that the flicker of the

adjustment displayed. image plane may stop in the

(The 12th-page COM Item) confrontation adjustment pattern.

2 Black level adjustment 1. A JA-5CH signal is displayed. 1. It confirms that the third gradation is

(The 12th-page N358 a cut-off point from the left of the

BRIGHTNESS Item) gradation pattern.

3 White balance adjustment 1. A JA-6CH signal is displayed. 1. White balance in comparison with the

(The 12, 13th-page Typ monitor.

N358 R CUTOFF

N358 B CUTOFF

N358 R DRIVE

N358 B DRIVE Item)