Sony DCR-PC7, Service Manual

Page: 85 / 107

6-50
3-5-2. Base Band Block Adjustment
1. Composite Output Chroma Level Adjustment
(VC-183 Board)
Set the chroma signal level of the composite video output signal.
Note1:
Insert a plug in the VIDEO/AUDIO output jack.
Adjusting method:
1) Set data: 01 to page: 1, address: 00.
2) Set data: 87 to page: D, address: E4, and press the PAUSE button
of the adjusting remote commander.
3) Change the data of page: D, address: E1, and set the burst signal
level(A) to the specified value.
4) Press the PAUSE button of the adjusting remote commander.
5) Set data: 00 to page: 1, address: 00.
6) Perform “Composite Output Y Level Adjustment”.
2. Composite Output Y Level Adjustment (VC-183 Board)
Set the Y signal level of the composite video output signal.
Note1: Insert a plug in the VIDEO/AUDIO output jack.
Note2: Perform “Composite Output Chroma Level Adjustment”
before this adjustment.
Adjusting method:
1) Set data: 01 to page: 1, address: 00.
2) Change the data of page: D, address: E5, and set the sync signal
level(A) to the specified value.
3) Press the PAUSE button of the adjusting remote commander.
4) Set data: 00 to page: 1, address: 00.
5) Perform “S-Y Output Level Adjustment”.
H
A
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Video signal terminal of VIDEO/
AUDIO output jack (75
Ω
terminated)
Oscilloscope
D
E1
A = 286 ± 6 mV (NTSC)
A = 300 ± 6 mV (PAL)
VTR stop
No signal
Fig. 6-3-10.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Video signal terminal of VIDEO/
AUDIO output jack (75
Ω
terminated)
Oscilloscope
D
E5
A = 286 ± 6 mV (NTSC)
A = 300 ± 6 mV (PAL)
VTR stop
No signal
Fig. 6-3-11.
A
H