Sony CCD TRV16 Service Manual - Page 128

VIDEO SYSTEM ADJUSTMENTS, 28 MHz Origin Oscillation Adjustment VC-215 board

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3-4. VIDEO SYSTEM ADJUSTMENTS Video system adjustments must be performed in the following order. [Adjusting Order] 1. 28MHz origin oscillation adjustment 2. AFC f0 adjustment 3. Filter f0 adjustment 4. Y OUT level adjustment 5. C OUT level adjustment 6. RP filter f0 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 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. Mode Signal Measurement Point Measuring Instrument Adjustment Page Adjustment Address Specified Value VTR stop No signal Pin ^§ of IC202 or pin !™ of IC501 Frequency counter F 2C Pin ^§ of IC202 : f=3579545±17Hz Pin !™ of IC501 : f=14318181±68Hz 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.

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3-4.
VIDEO SYSTEM ADJUSTMENTS
Video system adjustments must be performed in the following order.
[Adjusting Order]
1.
28MHz origin oscillation adjustment
2.
AFC f0 adjustment
3.
Filter f0 adjustment
4.
Y OUT level adjustment
5.
C OUT level adjustment
6.
RP filter f0 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=3579545±17Hz
Pin
!™
of IC501 :
f=14318181±68Hz
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.