Contrast Adjustment (Pd-156 Board); Com Amp Adjustment (Pd-156 Board) - Sony Handycam CCD-TRV107 Service Manual

CCD-TRV107/TRV108/TRV308/TRV408/TRV608

4. Contrast Adjustment (PD-156 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).
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: 2.5 LCD model : CCD-TRV107/TRV108/TRV308/TRV408
3.0 LCD model : CCD-TRV608
Adjusting method:
Order Page Address Data
1 0 01
2 7 4B
3 7 4B
4 0 01
100 IRE
A
Pedestal
VTR stop
No signal
Pin 3 of CN5502 (VG)
External trigger: Pin 4 of CN5502
(PANEL COM)
Oscilloscope
7
4B
2.5 LCD: A = 3.52 ± 0.07V
3.0 LCD: A = 3.32 ± 0.07V
Procedure
01 Set the data.
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".)
Press PAUSE button.
00 Set the data.
2H
Fig. 5-1-17.

5. COM AMP Adjustment (PD-156 board)

Set the common electrode drive signal level of LCD to the specified
value.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: 2.5 LCD model : CCD-TRV107/TRV108/TRV308/TRV408
3.0 LCD model : CCD-TRV608
Adjusting method:
Order Page Address Data
1 0 01
2 7 48
3 7 48
4 0 01
A
5-26
VTR stop
No signal
Pin 4 of CN5502 (PANEL COM)
Oscilloscope
7
48
2.5 LCD: A = 6.30 ± 0.05V
3.0 LCD: A = 6.05 ± 0.05V
Procedure
01 Set the data.
Change the data and set the
PANEL COM signal level (A) to
the specified value.
Press PAUSE button.
00 Set the data.
2H
Fig. 5-1-18.