Vco Adjustment (Pd-156 Board); Rgb Amp Adjustment (Pd-156 Board) - Sony Handycam CCD-TRV107 Service Manual

2. VCO Adjustment (PD-156 board)

Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
Mode VTR stop
Signal No signal
Measurement Point Pin 8 of CN5502 (XHD OUT)
Measuring Instrument Frequency counter
Adjustment Page 7
Adjustment Address 43
Specified Value f = 15734 ± 30Hz
Adjusting method:
Order Page Address Data
1 0 01 01
2 7 43
3 7 43
4 0 01 00
Procedure
Set the data.
Change the data and set the VCO
frequency (f) to the specified value.
Press PAUSE button.
Set the data.
CCD-TRV107/TRV108/TRV308/TRV408/TRV608

3. RGB AMP Adjustment (PD-156 board)

Set the D range of the RGB decoder used to drive the LCD to the
specified value. If deviated, the LCD screen will become blackish
or saturated (whitish).
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
Order Page Address Data
1 0 01
2 7 46
3 7 46
4 0 01
A
5-25
VTR stop
No signal
Pin 3 of CN5502 (VG)
External trigger: Pin 4 of CN5502
(PANEL COM)
Oscilloscope
7
46
A = 3.62 ± 0.05V
Procedure
01 Set the data.
Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to the
specified value.
(The data should be "00" to "3F".)
Press PAUSE button.
00 Set the data.
Pedestal
2H
Pedestal
Fig. 5-1-16.