System Control System Adjustment; Initialization Of D, E, F, 7 Page Data; Servo Adjustment; Cap Fg Offset Adjustment (Vc-272 Board) - Sony Handycam CCD-TRV107 Service Manual

3-2. SYSTEM CONTROL SYSTEM ADJUSTMENT

1. Initialization of D, E, F, 7 Page Data

If the D, E, F, 7 page data is erased due to some reason, perform "1-
2. INITIALIZATION OF D, E, F, 7 PAGE DATA", of "5-1.
CAMERA SECTION ADJUSTMENT"

3-3. SERVO ADJUSTMENT

1. CAP FG Offset Adjustment (VC-272 board)

Set the Cap FG signal duty cycle to 50% to establish an appropriate
capstan servo. If deviated, the uneven rotation of capstan and noise
can occur in the LP mode.
Mode Camera recording (SP mode)
Subject Arbitrary
Measurement Point CAP FG (Pin 4 of CN713)
Measuring Instrument Oscilloscope
Adjustment Page F
Adjustment Address 59
Specified value Duty = 50 ± 1 %
Adjusting method:
Order Page Address Data
1 0 01 01
2 6 01 81
3 6 02
4 6 01 00
5
6 0 01 00
Center of movement
A
B
Fig. 5-3-4.
Procedure
Set the data.
Set the data, and press PAUSE
button.
Check that the data changes to
"01".
Set the data, and press PAUSE
button.
Check that Duty of CAP FG signal
satisfies the specified value. If not,
repeat steps 2 to 5.
Set the data.
Duty = A/B × 100 [%]
CCD-TRV107/TRV108/TRV308/TRV408/TRV608

2. Switching Position Adjustment (VC-272 board)

If deviated in this case causes switching noise or jitter on the played
back screen.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting Method:
Order Page Address Data
1 0 01
2 F 20
3 F 5A
4 F 5A
5 F 5B
6 F 5B
7 F 20
8 0 01
CH1
CH2
Enlargement
CH1
CH2
5-33
Playback
Alignment tape:
For tracking adjustment
(WR5-1NP)
CH1: SWP (Pin 5 of CN713)
CH2: PB RF (Pin 9 of CN713)
Oscilloscope
F
5A, 5B
t1 = 0 ± 10 µsec
Procedure
01 Set the data.
40 Set the data, and press PAUSE
button.
Change the data and minimize
"t1". (Coarse adjustment)
Press PAUSE button
Change the data and adjust so
that the switching position (t1)
becomes the specified value.
(Fine adjustment)
Press PAUSE button
00 Set the data, and press PAUSE
button.
00 Set the data.
t1=0 ± 10 µsec
Fig. 5-3-5.