Video System Adjustments; (Vc-272 Board); Afc F Adjustment (Vc-272 Board) - Sony Handycam Vision CCD-TRV107E Service Manual

CCD-TRV107E/TRV108E/TRV208E/TRV408E
3-4.

VIDEO SYSTEM ADJUSTMENTS

Video system adjustments must be performed in the following order.
[Adjusting Order]
1. 28MHz origin oscillation adjustment
2. AFC f adjustment
0
3. Y OUT level adjustment
4. C OUT level adjustment
5. REC Y current adjustment
6. REC C/REC AFM current adjustment
1. 28 MHz Origin Oscillation Adjustment

(VC-272 board)

Set the frequency of the clock for synchronization.
If deviated, the synchronization will be disrupted and the color will
become inconsistent.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
Order Page Address Data
1 0 01
2 6 61
3 2 01
4 F 45
5 F 45
6 2 01
7 6 61
8 0 01
VC-272 board
216
1
IC151
54
55
R200
VTR stop
No signal
R200 (Pin ul of IC151)
Frequency counter
F
45
f = 4433594 ± 17Hz
Procedure
01 Set the data.
30 Set the data.
41 Set the data, and press PAUSE
button.
Change the data and set the
frequency (f) to the specified
value.
Press PAUSE button.
00 Set the data, and press PAUSE
button.
10 Set the data.
00 Set the data.
163
162
109
108
2. AFC f Adjustment (VC-272 board)
0
Adjust the pull-in range of the A/D converted clock generator during
playback.
Mode
Signal
Adjustment Page
Adjustment Address
Note1: Insert a plug into the S VIDEO or the A/V jack.
Adjusting method:
Order Page Address Data
1 0 01
2 F 5D
3 2 01
4
5 6 01
6 6 02
7 2 01
8 6 01
9 0 01
Note2: The adjustment data will be automatically input to page: F, address:
5D.
5-34
RadarW RadarW RadarW
VTR stop
No signal
F
5D
Procedure
01 Set the data.
50 Set the data, and press PAUSE
button.
4D Set the data, and press PAUSE
button.
Wait for 0.5 sec.
C5 Set the data, and press PAUSE
button.
Check that the data changes to
"01". (Note2)
00 Set the data, and press PAUSE
button.
00 Set the data, and press PAUSE
button.
00 Set the data.