Evf Initial Data Input; Vco Adjustment (Vf-131 Board) - Sony MVC-FD91 Service Manual

1. EVF Initial Data Input

Mode Playback
Signal Arbitrary
Adjustment Page F
Adjustment Address 6B, 6C, 6F, 70, 74, 75, E0
Adjusting method:
1) Select page: 0, address:01, and set data: 01.
2) Select page: F, and input the data in the following table.
Note: To write in the non-volatile memory (EEPROM), press the
PAUSE button of the adjustment remote commander each time
to set the data.
Address Data
6B 80 White balance adjustment
6C 80 White balance adjustment
6F 30 VCO adjustment
Backlight consumption current
70 B0
adjustment
74 98 Bright adjustment
75 80 Contrast adjustment
E0 1B Fixed value
Processing after Completing Adjustment
1) Select page: 3, address: 00, and set data: 29.
2) Select page: 3, address: 01, and set data: 29, and press the
PAUSE button of the adjustment remote commander.
Remark
5-21

2. VCO Adjustment (VF-131 board)

Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
Mode Playback
Signal Arbitrary
Pin @™ of CN701 (EVF VCO) on PK-
Measurement Point
45 board
Measuring Instrument Oscilloscope (DC range)
Adjustment Page F
Adjustment Address 6F
Specified Value A = 1.8 ± 0.1V
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 02, and set data: 01.
3) Check the GND level of the oscilloscope.
4) Select page: F, address: 6F, change the data and set the voltage
(A) to the specified value.
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 3, address: 02, and set data: 00.
7) Select page: 0, address: 01, and set data: 00.
H
Fig. 5-1-17.
A
GND level (0 Vdc)