Sony CCD TRV16 Service Manual - Page 129

AFC f0 Adjustment VC-215 board, Filter f0 Adjustment VC-215 board

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2. AFC f0 Adjustment (VC-215 board) 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 VTR stop No signal Pin 4 of CN910 (AFC f0) Digital voltmeter F 4A 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. Filter f0 Adjustment (VC-215 board) Minimize the chroma signal residual components during composite video signal input. Mode Signal Measurement Point Measuring Instrument Adjustment Page Adjustment Address Specified Value VTR stop No signal Pin 3 of CN910 (IR VIDEO) Oscilloscope F 4D Minimum residual chroma signal components (A = Bellow 35mV) Switch setting: LASER LINK ON (Red LED is lit) Adjusting method: 1) Select page: 0, address: 01, and set data: 01. 2) Select page: 3, address: 01, set data: 4F, and press the PAUSE button of the adjusting remote commander. 3) Select page: F, address: 4D, change the data and minimize the residual chroma signal components (A). 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. A H Fig. 5-3-7.

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2. AFC f0 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. Filter f0 Adjustment (VC-215 board)
Minimize the chroma signal residual components during compos-
ite video signal input.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin
3
of CN910 (IR VIDEO)
Measuring Instrument
Oscilloscope
Adjustment Page
F
Adjustment Address
4D
Specified Value
Minimum residual chroma signal
components (A = Bellow 35mV)
Switch setting:
LASER LINK
....................
ON (Red LED is lit)
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: 3, address: 01, set data: 4F, and press the PAUSE
button of the adjusting remote commander.
3)
Select page: F, address: 4D, change the data and minimize the
residual chroma signal components (A).
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.
Fig. 5-3-7.
A
H