Sony HVR-Z7J Service Manual page 257

2. V-COM Adjustment (PP-005 board)
Set the DC bias of the common electrode drive signal of LCD to
the specified value.
If deviated, the LCD display will be move, producing flicker and
conspicuous vertical lines.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note 1: Perform "PANEL Gain Adjustment" before this adjust-
ment.
Note 2: Check that the data of page: 0, address: 10 is "00".
Switch setting
BACKLIGHT (MENU setting) ............................................... ON
Adjusting method:
Order Page Address Data
1 0 01
2 3 71
3 C A1
4 C A1
5 C A1
6 3 70
7 3 70
8 0 01
HVR-Z7J/Z7U/Z7N/Z7E/Z7P/Z7C
VTR stop (VCR mode)
No signal
Check on LCD screen
C
A1
The brightness difference between
the section-A and section-B is
minimum
Procedure
01
01 Press PAUSE (Write) button.
70
Change the data so that
brightness of the section A
and section B is equal.
Set a value obtained by
adding 3 to the
forementioned data, and
press PAUSE (Write) button.
10 Press PAUSE (Write) button.
Check the data changes to
"11".
00
B A
A
B
B A
A B
Fig. 6-1-14
3. Transmissive Mode White Balance Adjustment
(PP- 005 board)
Correct the white balance at transmissive mode.
If deviated, the LCD screen color cannot be reproduced.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note 1: Check that the data of page: 0, address: 10 is "00".
Note 2: Check the white balance only when replacing the fol-
lowing parts. If necessary, adjust them.
1. LCD block
2. Light induction plate
3. IC6001
Adjusting method:
Order Page Address Data
1 0 01
2 3 71
3 C A2
4 C A3
5
A2
6 C
A3
7 3 70
8 3 70
9 0 01
Note 3: To write in the non-volatile memory (EEPROM), press
the PAUSE (Write) button each time to set the data.
6-73
VTR stop (VCR mode)
No signal
Check on LCD screen
C
A2, A3
LCD screen must not be colored
Procedure
01
01 Press PAUSE (Write) button.
20 Press PAUSE (Write) button.
20 Press PAUSE (Write) button.
Check that the LCD screen is
not colored. If not colored,
proceed to step 7.
Change the data so that the
LCD screen is not colored.
(Note 3)
10 Press PAUSE (Write) button.
Check the data changes to "11".
00