Sony Handycam CCD-TR648E, Service Manual, Page: 113 / 158

5-23
CCD-TR648E/TR748E/TR848
2. Contrast Adjustment (VF-150 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).
Note: Do either of the automatic adjustment or the manual adjustment.
2-1. Automatic Adjustment
Mode Camera
Subject Arbitrary
Adjustment Page 7
Adjustment Address 3A
Adjusting method:
Order Page Address Data Procedure
1 0 01 01 Set the data.
2 6 01 E5 Set the data, and press PAUSE
button.
3 6 02 Check that the data changes
from “00” to “01”.
4 6 01 00 Set the data, and press PAUSE
button.
5 0 01 00 Set the data.
2-2. Manual Adjustment
Mode Camera
Subject Arbitrary
Measurement Point EVF VG
(Pin
qf
of CN713 of VC-272 board)
Measuring Instrument Oscilloscope
Adjustment Page 7
Adjustment Address 3A
Specified Value A = 2.30 ± 0.12V (NTSC)
A = 2.28 ± 0.12V (PAL)
Note:
NTSC model: CCD-TR848
PAL model:
CCD-TR648E/TR748E
Adjusting method:
Order Page Address Data Procedure
1 0 01 01 Set the data.
2 7 3A 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”.)
3 7 3A Press PAUSE button.
4 0 01 00 Set the data.
Fig. 5-1-15.
100 IRE
Pedestal
A
2H