9. Vcom Adjustment (Nfr-Auo Panel); Vcom Adjustment (Hfr-Sdc Panel) - Sony KDL-40W900A Service Manual

Service Adjustment

4-9. VCOM Adjustment (NFR-AUO Panel)

4-9-1. STEP1
1. in "Digital" service mode 1 in "Digital" service mode
a. Select "003 DIG_SRV_MODE"
category by pressing "2 / 5" on
remote.
b. Press "0" to go to "TEST PATTERN"
Mode Mode.
c. Press "Enter" or "12" to go into
Video TEST PATTERN.
d. Press "7" or "8" to select the test
pattern
e e. Press Enter or 12 twice to show Press "Enter" or "12" twice to show
the VCOM TEST PATTERN.
4-9-2. STEP2
2.in "VPC" service mode
a. Select "002 VCOM" category by pressing
"2 / 5" on remote.
b. b. Select 000 ENABLE item by pressing 1 Select "000 ENABLE" item by pressing "1
/ 4" on remote.
c. Change ENABLE from "0" to "1" by
pressing "3" to enable VCOM adjustment.
DIGITAL (DIG_SRV_MODE) SERVICE
TEST PATTERN
--> 1 Video
*1 White
2 Ramp p
3 R Raster
4 G Raster
5 B Raster
6 Color Bar
7 VCOM Pattern1
8 VCOM Pattern2
9 Off 9 Off
VPC SERVICE
002 VCOM
000 ENABLE 0
4-9-3. STEP3
3. in "VPC" service mode
a. Select "002 VCOM" category by
pressing "2 / 5" on remote.
b. Select "001 ADJUST" item by
pressing "1 / 4" on remote pressing 1 / 4 on remote.
c. Change data by pressing "3 / 6" on
remote.
4 9 4 STEP4 4-9-4. STEP4
4.
DIGITAL SERVICE
007 VCOM
000 SRV_OSD_EN 1
VIDEO:STANDARD AUDIO:STANDARD
PSAVE:STANDARD
MAIN: SUB:
TUNER/----/---- ----/----/NTSCU
----X----/----- ----X----/-----
-----/--- -----/---
RB1G
W900A/904A/905A
VPC SERVICE
002 VCOM
001 ADJUST
in "Digital" service mode
a. Select "007 VCOM" category by
pressing "2 / 5" on remote.
b. Change data from "1" to "0" by
pressing "3 or 6 " on remote. i "3 6 "
c. Confirm the final result of the
VCOM adjustment .
d. If OK, Finish the VCOM
adjustment. If NG, pressing "3 or
6" t 6" to show the OSD again and h th OSD i
go back to VCOM adjustment
Step 3.
CHASSIS
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