Color Adjustment (Pk-47/48 Board); V-Com Level Adjustment (Pk-47/48 Board) - Sony MVC-FD83 Service Manual

7. Color Adjustment (PK-47/48 Board)

Set the color saturation to the standard value.
If, deviated, the color will be dark or light.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 06, and set data: 01.
3) Select page: 5, address: F1, and set data: 04.
4) Select page: D, address: 81, change the data and set the volt-
age (A) between the white and green to the specified value.
5) Press the PAUSE button of the adjusting remote commander.
Processing after Completing Adjustments:
1) Select page: 5, address: F1, and set data: 00.
2) Select page: 2, address: 06, and set data: 00.
3) Select page: 0, address: 01, and set data: 00.
White
A
Green
Fig. 5-1-25
PLAY
Color bar (Test signal)
Pin (9) of CN801 (VG)
Oscilloscope
D
81
A = 490 ± 50 mVp-p (FD83)
A = 540 ± 50 mVp-p (FD88)
2H

8. V-COM Level Adjustment (PK-47/48 Board)

Set the common electrode drive signal level of LCD to the speci-
fied value.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 06, and set data: 01.
3) Select page: 5, address: F1, and set data: 03.
4) Select page: D, address: 86, change the data and set the V-
COM signal level (A) to the specified value.
5) Press the PAUSE button of the adjusting remote commander.
Processing after Completing Adjustments:
1) Select page: 5, address: F1, and set data: 00.
2) Select page: 2, address: 06, and set data: 00.
3) Select page: 0, address: 01, and set data: 00.
A
5-31
PLAY
Stair-step signal of 10 steps (non
burst)
(Test signal)
Pin (8) of CN801 (COM)
Oscilloscope
D
86
A = 6.10 ± 0.05 Vp-p (FD83)
A = 6.50 ± 0.05 Vp-p (FD88)
2H
Fig. 5-1-26