Video System Adjustments; 28 Mhz Origin Oscillation Adjustment; Afc F; Adjustment (Vc-214 Board) - Sony CCD-TR913E Service Manual

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. Filter f adjustment
0
4. Y OUT level adjustment
5. C OUT level adjustment
6. RP filter f adjustment
0
7. REC Y current adjustment
8. REC L level adjustment
9. REC C current adjustment
1. 28 MHz Origin Oscillation Adjustment (VC-214 board)
Set the frequency of the clock for synchronization.
If deviated, the synchronization will be disrupted and the color will
become inconsistent.
Mode VTR stop
Signal No signal
Pin #™ of IC301 or pin !™ of IC501
Measurement Point
Measuring Instrument Frequency counter
Adjustment Page F
Adjustment Address 40
Pin #™ of IC301 :
Specified Value
Pin !™ of IC501 :
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 01, set data: 41, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 6, address: 61, and set data: 30.
4) Select page: F, address: 40, change the data and set the clock
frequency (f) to the specified value.
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: 6, address: 61, and set data: 10.
7) Select page: 2, address: 01, set data: 00, and press the PAUSE
button of the adjustment remote commander.
8) Select page: 0, address: 01, and set data: 00.
VC-214 BOARD
48 33
49 32
IC301
64 17
1 16
f=4433594 ± 17Hz
f=14187500 ± 55Hz
25 36
24 37
IC501
13 48
12 1
2. AFC f

Adjustment (VC-214 board)

0
Adjust the pull-in range of the A/D converted clock generator during
playback.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 01, set data: 4D, and press the PAUSE
button of the adjustment remote commander.
3) Select page: F, address: 6A, change the data and set the DC
voltage (A) to the specified value.
4) Press the PAUSE button of the adjustment remote commander.
5) Select page: 2, address: 01, set data: 00, and press the PAUSE
button of the adjustment remote commander.
6) Select page: 0, address: 01, and set data: 00.
5-35
VTR stop
No signal
Pin 4 of CN910 (AFC f0)
Digital voltmeter
F
6A
A=2.00 ± 0.05Vdc