Sony CCD-TRV26E, Service Manual, Page: 132 / 181

5-48
2. AFC f
0
Adjustment (VC-215 board)
Adjust the pull-in range of the A/D converted clock generator dur-
ing playback.
Mode VTR stop
Signal No signal
Measurement Point Pin
4
of CN910 (AFC f0)
Measuring Instrument Digital voltmeter
Adjustment Page F
Adjustment Address 4A
Specified Value A = 2.10±0.05Vdc
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 4D, and press the PAUSE
button of the adjusting remote commander.
3) Select page: F, address: 4A, change the data and set the DC
voltage (A) to the specified value.
4) Press the PAUSE button of the adjusting remote commander.
5) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.
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
0
adjustment
3. Filter f
0
adjustment
4. Y OUT level adjustment
5. C OUT level adjustment
6. RP filter f
0
adjustment
7. Hi8 REC Y current adjustment
8. Standard REC Y current adjustment
9. Hi8 REC L level adjustment
10. Standard8 REC L level adjustment
11. REC C current adjustment
Mode VTR stop
Signal No signal
Measurement Point Pin
^§
of IC202 or pin
!™
of IC501
Measuring Instrument Frequency counter
Adjustment Page F
Adjustment Address 2C
Specified Value Pin
^§
of IC202 :
f=4433593.75±17Hz
Pin
!™
of IC501 :
f=14187500±55Hz
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 61, and set data: 30.
3) Select page: 3, address: 01, set data: 41, and press the PAUSE
button of the adjusting remote commander.
4) Select page: F, address: 2C, change the data and set the clock
frequency(f) to the specified value.
5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 2, address: 61, and set data: 10.
7) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.
1. 28 MHz Origin Oscillation Adjustment (VC-215 board)
Set the frequency of the clock for synchronization.
If deviated, the synchronization will be disrupted and the color will
become inconsistent.