Sony Digital Handycam DCR-PC100E, Руководство по обслуживанию

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5-21
1-3. CAMERA SYSTEM ADJUSTMENTS
Before perform the camera system adjustments, check that the
specified values of “VIDEO SYSTEM ADJUSTMENT” are
satisfied.
1. 54MHz/66MHz Origin Oscillation Adjustment
(CD-234 board)
Set the frequency of the clock for synchronization.
If deviated, the synchronization will be disrupted and the color will
become inconsistent.
Subject Not required
Measurement Point Pin qh of IC201 of VC-227 board or
pin wd of IC404 of VC-227 board
Measuring Instrument Frequency counter
Adjustment Page F
Adjustment Address 12
Specified Value Pin
qh
of IC201 of VC-227 board :
f=33000000 ± 165Hz (NTSC)
f=27000000 ± 134Hz (PAL)
Pin wd of IC404 of VC-227 board:
f=13500000 ± 68Hz
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: F, address: 12, change the data and set the clock
frequency (f) to the specified value.
3) Press the PAUSE button of the adjustment remote commander.
4) Select page: 0, address: 01, and set data: 00.
2. Zoom Key Center Adjustment
Set the A/D value center of the microprocessor to the center voltage
of the zoom key.
If deviated, the zoom lens operates of itself, even if the zoom key is
the center position.
Subject Not required
Measurement Point Display data of page: 6, address: 50
Measuring Instrument Adjustment remote commander
Adjustment Page F
Adjustment Address 13
Note:
Don’t touch the zoom lever during adjustment.
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: 6, address: 50, read the data, and this data is named
D
50
.
3) Select page: F, address: 13, set data: D
50
.
4) Press the PAUSE button of the adjustment remote commander.
5) Select page: 0, address: 01, and set data: 00.
VC-227 board
IC201
IC404
1
12
13
24
25
36
37
48
48 37
36
25
24 13
12
1
Fig. 5-1-6