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DCR-TRV238E, DCR-TRV239E (serv.man4) - Sony Movie Service Manual (repair manual). Page 14

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— 18 —
DCR-TRV238E/TRV239E
(Page 5-32)
2. PSIG Gray Adjustment (PD-160 board)
Set the uniformity improvement signal to an appropriate level.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 4 of CN5502 (PSIG)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
66
Specified Value
A = 5.00 ± 0.1V
Note:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
66
Change the data and set the
PSIG signal level (A) to the
specified value.
(The data should be “00” to
“7F”)
3
C
66
Press PAUSE button.
4
0
01
00
Set the data.
Fig. 5-1-17.
3. RGB AMP Adjustment (PD-160 board)
Set the D range of the RGB decoder used to drive the LCD to the
specified value. If deviated, the LCD screen will become blackish
or saturated (whitish).
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 3 of CN5502 (VG)
Ext. trigger: Pin 4 of CN5502  (PSIG)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
64
Specified Value
A = 7.44 ± 0.05V
Note:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
64
Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to
the specified value.
3
C
64
Press PAUSE button.
4
0
01
00
Set the data.
Fig. 5-1-18.
A
2H
Pedestal
Pedestal
A
2H
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