Vco Adjustment (Vf-141 Board) - Sony MVC-FD97 Service Manual

2. VCO Adjustment (VF-141 board)

Set the VCO free-run frequency. If deviated, the EVF screen will
be blurred.
Mode CAMERA
Subject Arbitrary
Pin ws of CN803 (EVF_VCO) on
Measurement Point
FC-85 board
Measuring Instrument Oscilloscope
Adjustment Page D
C5 (NTSC)
Adjustment Address
CD (PAL )
A = 1.70 ± 0.06 V (NTSC)
Specified Value
A = 1.25 ± 0.06 V (PAL)
Menu setting:
1) VIDEO OUT of SET UP menu
.................................. NTSC (NTSC mode)
(This adjustment must be performed in NTSC mode, so don't
set the menu setting to "PAL" )
Adjusting method (NTSC):
Order Page Address Data
1 0 01 01
2 2 11 80
3 D C5
4 D C5
Adjusting method (PAL):
Order Page Address Data
1 0 01 01
2 2 11 80
3 D C5
4 D C5
5 D CD D
C5
Processing after Completing Adjustment:
Order Page Address Data
1 2 11 00
2 0 01 00
Procedure
Change the data and set the
voltage (A) to the specified value.
Press PAUSE button.
Procedure
Change the data and set the
voltage (A)to the specified value.
Read the data and this data is
named D .
C5
Press PAUSE button.
Procedure
A
5-38
GND level
(0 Vdc)
Fig. 5-1-25