Base Band Block Adjustment; Composite Output Y Level Adjustment (Cb-58 Board); Composite Output Chroma Level Adjustment (Cb-58 Board) - Sony DCR-TRV7 Service Manual

3-4-2. Base Band Block Adjustment

1. Composite Output Y Level Adjustment (CB-58 Board)

Set the Y signal level of the composite video output signal.
Mode VTR stop
Signal No signal
Video signal terminal of AUDIO/VIDEO
Measurement Point
OUT jack (75Ω terminated)
Measuring Instrument
Oscilloscope
Adjustment Page D
Adjustment Address 96
A = 286 ± 6 mV (NTSC)
Specified Value
A = 300 ± 6 mV (PAL)
Note1: Insert a plug in the AUDIO/VIDEO OUT jack.
Adjusting method:
1) Set data: 01 to page: 0, address: 01.
2) Change the data of page: D, address: 96, 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: 0, address: 01.
5) Perform "Composite Output Chroma Level Adjustment".
H
Fig. 5-3-9.
2. Composite Output Chroma Level Adjustment
(CB-58 Board)
Set the chroma signal level of the composite video output signal.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note1: Insert a plug in the AUDIO/VIDEO OUT jack.
Note2: Perform "Composite Output Y Level Adjustment" before
this adjustment.
Adjusting method:
1) Set data: 01 to page: 0, address: 01.
2) Change the data of page: D, address: 97, and set the burst signal
level(A) to the specified value.
3) Press the PAUSE button of the adjusting remote commander.
4) Set data: 00 to page: 0, address: 01.
5) Perform "S-C Output Level Adjustment".
A
5–49
VTR stop
No signal
Video signal terminal of AUDIO/VIDEO
OUT jack (75Ω terminated)
Oscilloscope
D
97
A = 286 ± 6 mV (NTSC)
A = 300 ± 6 mV (PAL)
H
Fig. 5-3-10.
A