Camera System Adjustments; Mhz/66Mhz Origin Oscillation Adjustment; (Cd-234 Board); Zoom Key Center Adjustment - Sony DCR-PC100 Service Manual

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 :
Pin wd of IC404 of VC-227 board:
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.
48
1
IC201
12
13
VC-227 board
Fig. 5-1-6
f=33000000 ± 165Hz (NTSC)
f=27000000 ± 134Hz (PAL)
f=13500000 ± 68Hz
37
36
48 37
25
1 36
24
IC404
12 25
13 24

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
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
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
4) Press the PAUSE button of the adjustment remote commander.
5) Select page: 0, address: 01, and set data: 00.
5-21
Not required
Display data of page: 6, address: 50
Adjustment remote commander
F
13
.
50