Camera System Adjustments; Mhz/66Mhz Origin Oscillation Adjustment (Dcr-Trv20/Trv20E)(Cd-252 Board) - Sony DCR-TRV6 Service Manual

1-3.

CAMERA SYSTEM ADJUSTMENTS

Before perform the camera system adjustments, check that the
specified values of "VIDEO SYSTEM ADJUSTMENT" are
satisfied.
Note: NTSC model: DCR-TRV6/TRV11/TRV20
PAL model: DCR-TRV6E/TRV11E/TRV20E
1. 36MHz Origin Oscillation Adjustment
(DCR-TRV6/TRV6E/TRV11/TRV11E)
(VC-241 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 IC701 or pin 7 of IC1901
Measuring Instrument Frequency counter
Adjustment Page F
Adjustment Address 12
Specified Value Pin qh of IC701:
Pin 7 of IC1901:
Note: SUPER LASER LINK ................................... ON (Red LED is lit)
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.
24 13
25
12
IC701
36
12
1 1
13 37 48
48
24
37
25 36
IC1901
Fig. 5-1-6.
f=18000000 ± 90Hz
f=3579545 ± 18Hz (Note)
VC-240/241 board
2. 54MHz/66MHz Origin Oscillation Adjustment
(DCR-TRV20/TRV20E)
(CD-252 board)
Set the frequency of the clock for synchronization.
If deviated, the synchronization will be disrupted and the color will
become inconsistent.
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: SUPER LASER LINK ................................... ON (Red LED is lit)
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.
5-20
Not required
Pin qh of IC701 of VC-240 board or
pin 7 of IC1901 of VC-240 board
Frequency counter
F
12
Pin qh of IC701 of VC-240 board :
f=33000000 ± 165Hz (NTSC)
f=27000000 ± 134Hz (PAL)
Pin 7 of IC1901 of VC-240 board:
f=3579545 ± 18Hz (Note)