Service manual

21
PG-M20S
PG-M20X
ELECTRICAL ADJUSTMENT
1 Initialization of
EEPROM
1. Turn on the power (the lamp lights
up) and warm up the system for 15
minutes.
No. Adjustment Items Adjustment Conditions Adjustment Procedures
1. Carry out the following setting.
Press SW2001 to enter the process
mode, and execute S2 on SSS menu.
2 Adjustment of CW
index
1. Signal input: 64-step color bar
2. Select the following group and sub-
ject.
Group: DLP
Subject: Select CW-INDEX.
1. Feed the signal to INPUT 1.
2. Select subject and make adjustment
so that the lamp gradation patterns
of R, G and B should be smooth with-
out noise.
R
G
B
3 Adjustment of
RGB gradation
reproduction
1. Feed the SMPTE pattern signal.
2. Select the following group and sub-
ject.
Group: DLP
Subject: G1-GAIN
1. Confirm that 100% and 95% white
gradation, and 0% and 5% black gra-
dation are discernible.
2. If the white gradation looks differently,
do fine adjustment by G1-GAIN.
4 Adjustment of
video brightness/
contrast
1. Feed the NTSC100% window pat-
ter signal. (Burst signal)
2. Select the following group and sub-
ject.
Group: VIDEO
Subject: AUTO
1. After signal input, select AUTO us-
ing the set's switch or the remote
controller's button for automatic ad-
justment.
5 Adjustment of
video tint
1. Feed the split color bar signal.
2. Select the following group and sub-
ject.
Group: VIDEO
Subject: TINT
1. Confirm the fixed value.
Fixed value: 128