Service manual

VL-NZ50U/NZ100U

VL-NZ150U

4. COM-BIAS adjustment

Test point LCD panel display surface Address VCR ADJ 33

Mode VCR AV input

Procedure 1) Set the data of the address 582 to AF.

2) Set up the illuminance meter (TOPCON IM-3) on the LCD panel surface. (The outside light must not enter.)

3) Minimize the ripple of the output waveform of the illuminance meter.

4) Return the data of the address 582 to the initial value. (Initial value: 40)

Adjustment Minimum

rating

Remark Make this adjustment after 5-minute or longer aging.

Examples • During LCD Panel replacement. • During IC705 replacement.

Response time : 0.6sec

5. White Balance adjustment

Test point LCD panel display surface Address VCR ADJ 586, VCR ADJ 588

Mode VCR AV input

Procedure 1) Set the data of the address 582 to AF.

2) Input the white 40% signal to the standard monitor, and adjust it to become equal to that of the screen.

3) Return the data of the address 582 to the initial value. (Initial value: 40)

Adjustment Standard monitor

rating

Remark Make this adjustment after 5-minute or longer aging.

Examples • During LCD monitor replacement. LCD Panel • During IC4401, IC705 replacement.