Sony HVR-A1J Service Manual page 219

2. Back Light Adjustment (NN-001 board)
Set the back light luminance.
If deviated, the image may become dark or bright.
Mode CAMERA
Subject Not required
Measurement Point Pin 3 of CN7005 (EXT_DA) on
NN-001 board
Measuring Instrument Digital voltmeter
Adjustment Page C
Adjustment Address 32, 33
Specified Value NORMAL mode:
BRIGHT mode:
Note: Check that the data of page: 0, address: 10 is "00".
Adjusting method:
Order Page Address Data
1 0 01 01
2 C 32
3 C 32
4 C 33
5 C 33
6 0 01 00
HVR-A1J/A1U/A1N/A1E/A1P/A1C
A = 1.00 ± 0.05 Vdc
B = 1.65 ± 0.05 Vdc
Procedure
Change the data and set the
DC voltage (A) to the
specified value of NORMAL
mode.
Press PAUSE (Write) button.
Change the data and set the
DC voltage (B) to the
specified value of BRIGHT
mode.
Press PAUSE (Write) button.
3. PSIG Level Adjustment (NN-001 board)
Set the uniformity improvement signal level to an appropriate level.
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note: Check that the data of page: 0, address: 10 is "00".
Adjusting method:
Order Page Address Data
1 0 01
2 C 39
3 C 39
4 0 01
6-60
CAMERA
Not required
Pin 6 of CN7005 (PSIG) on NN-
001 board
Oscilloscope
C
39
A = 6.00 ± 0.05 Vp-p
Procedure
01
Change the data and set the
PSIG signal level (A) to the
specified value.
(The data should be "00" to
"7F".)
Press PAUSE (Write) button.
00
2H
Fig. 6-1-18
A