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3-3.
SERVO SYSTEM ADJUSTMENTS
1. CAP FG Offset Adjustment (VC-195 board)
Improve the capstan servo characteristic. If it is not correct. jitters
will increase.
Mode
Camera recording (SP mode)
Subject
Arbitrary
Pin !™ of CN910 (CAP FG)
Measurement Point
Measuring Instrument Oscilloscope
Adjustment Page
F
Adjustment Address
69
Specified value
Duty = 50±1%
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 01, and set data: 81, and press the PAUSE
button of the adjustment remote commander. (to start up
automatic CAP FG offset adjustment.)
3) Select page: 2, address: 02, and check that the data is "01".
4) Check that Duty of CAP FG signal satisfies the specified value.
If not, select page: 2, address: 01, set data: 00, and press the
PAUSE button, and then, repeat steps 2) to 4).
5) Select page: 2, address: 01, and set data: 00, and press the PAUSE
button of the adjustment remote commander.
6) Select page: 0, address: 01, and set data: 00.
Fig. 5-3-5.
2. Switching Position Adjustment (VC-195 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
Note 1: NTSC MODEL: CCD-TR311
PAL MODEL:
Adjusting Method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: F, address: 2A, and set data: 20, and press the PAUSE
button of the adjustment remote commander.
3) Select page: F, address: 7C, change the data and minimize "t1",
and then press the PAUSE button of the adjustment remote
commander. (Coarse adjustment)
4) Select page: F, address: 7D, change the data and adjust so that
the switching position (t1) becomes the specified value. (Fine
adjustment)
5) Press the PAUSE button of the adjustment remote commander.
6) Select page: F, address: 2A, and set data: 00, and press the PAUSE
button of the adjustment remote commander.
7) Select page: 0, address: 01, and set data: 00.
5-40
Playback
Alignment tape:
For tracking adjustment
(WR5-1NP (NTSC))
(WR5-1CP (PAL))
CH1: Pin !¡ of CN910 (RF SWP)
CH2: Pin 6 of CN910 (PB RF)
Oscilloscope
F
7C, 7D
t1 = 0±10µsec
CCD-TR311E/TR411E/TR412E/
TR511E/TR512E/TR640E/TR730E/
TR840E/TR845E
Fig. 5-3-6.
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