DCR-PC4E, DCR-PC5, DCR-PC5E (serv.man2) - Sony Movie Service Manual (repair manual). Page 126

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2. Bright Adjustment (PD-126 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 1 of CN2105 (VG)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
A5
Specified Value
A = 7.8 ± 0.05V
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
D
A5
Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to
the specified value.
3
D
A5
Press PAUSE button.
4
0
01
00
Set the data.
5
Perform “Black Limit
Adjustment”.
3. Black Limit Adjustment (PD-126 board)
Set the dynamic range of the LCD driver to an appropriate level. If
deviated, the LCD screen will become blackish or saturated
(whitish).
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 4 of CN2105 (PSIG)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
A6
Specified Value
A = 8.60 ± 0.05V
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
2
0E
61
Set the data.
3
2
0F
Set the following data.
5B: DCR-PC5 (NTSC)
53: DCR-PC4E/PC5E (PAL)
4
D
A6
Change the data and set the
PSIG signal amplitude (A) to the
specified value.
(The data should be “00” to
“0F”.)
5
D
A6
Press PAUSE button.
6
2
0E
00
Set the data.
7
2
0F
00
Set the data.
8
0
01
00
Set the data.
9
Check that the spacified value of
“Bright Adjustment” is satisfied.
If not, perform “Bright
Adjustment”.
Pedestal
Pedestal
A
2H
A
V
Fig. 5-1-18.
Fig. 5-1-19.

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