Read Sony DCR-HC14E / DCR-HC15 / DCR-HC15E (serv.man4) Service Manual online
6-33
DCR-HC14E/HC15/HC15E
4. Black Limit Adjustment (PD-188 board)
Set the video signal level for driving the LCD driver to an appropriate
level.
level.
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 5 of CN1004 of VC-311 board
(PANEL COM)
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
4B
Specified Value
A = 8.30 ± 0.08V
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
3
C4
61
Set the data.
3
3
C5
Set the following data.
5B (NTSC), 53 (PAL)
5B (NTSC), 53 (PAL)
4
C
4B
Change the data and set the PSIG
signal amplitude (A) to the
specified value. (The data
should
be “00” to “0F”)
signal amplitude (A) to the
specified value. (The data
should
be “00” to “0F”)
5
C
4B
Press PAUSE button.
6
3
C4
00
Set the data.
7
3
C5
00
Set the data.
8
0
01
00
Set the data.
9
Check that the specified value of
“RGB AMP Adjustment” is
satisfied. If not, perform “RGB
AMP Adjustment”.
“RGB AMP Adjustment” is
satisfied. If not, perform “RGB
AMP Adjustment”.
5. Contrast Adjustment (PD-188 board)
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
value. If deviated, the screen image will be blackish or saturated
(whitish).
Mode
VTR stop
Signal
No signal
Measurement Point
Pin 9 of CN1004 of VC-311 board
(PANEL VG)
(PANEL VG)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
4F
Specified Value
A = 2.54 ± 0.05V (NTSC)
A = 2.58 ± 0.05V (PAL)
A = 2.58 ± 0.05V (PAL)
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
4F
Change the data and set the
voltage (A) between the 100 IRE
and 0 IRE (pedestal) to the
specified value. (The data should
be “00” to “7F”.)
voltage (A) between the 100 IRE
and 0 IRE (pedestal) to the
specified value. (The data should
be “00” to “7F”.)
3
C
4F
Press PAUSE button.
4
0
01
00
Set the data.
Fig. 6-1-21.
A
V
Fig. 6-1-22.
100 IRE
Pedestal
A
2H
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