Video System Adjustments - Sony CyberShot DSC-P72 Service Manual

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1-3.

VIDEO SYSTEM ADJUSTMENTS

1. Video Output Level Adjustment (SY-85 board)
Adjust the sync level of the composite video signal output.
Mode PLAY (
Signal Arbitrary
Measurement Point Video terminal of AV OUT jack
(75 terminated)
Measuring Instrument Oscilloscope
Adjustment Page 4F
Adjustment Address A0
Specified Value Sync level:
Burst level:
SETUP setting:
VIDEO OUT (SETUP 2) ............................ NTSC (NTSC mode)
.................................. PAL (PAL mode)
Adjusting method:
Order Page Address Data
1 00 01 01
2 60 C1
3 4F 02 03
4 40 F1 04
5 4F A0
6 4F A0
7
8 4F 02 00
9 40 F1 00
10 00 01 00
A
Fig.6-1-8.
)
A=286 ± 5mV (NTSC mode)
A=300 ± 5mV (PAL mode)
A=286 ± 30mV (NTSC mode)
A=300 ± 30mV (PAL mode)
Procedure
Set the data.
Read the data, and check it is "01".
Write the data.
Write the data.
Change the data and set the sync
level (A) to the specified value.
Write the data.
Check that the burst level (B)
satisfies the specified value.
Write the data.
Write the data.
Set the data.
H
B
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DSC-P72