Sony HANDYCAM HVR-S270P, Service Manual

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6-71
HVR-S270J/S270U/S270N/S270E/S270P/S270C
2. V-COM Adjustment (PP-006 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 VTR stop (VCR mode)
Signal No signal
Measurement Point Check on LCD screen
Measuring Instrument
Adjustment Page C
Adjustment Address A1
Specified Value The brightness difference between
the section-A and section-B is
minimum
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
VIDEO OUT .......................................................................... LCD
(Page: 7, address: 4F, Bit1 = 0)
Adjusting method:
Order Page Address Data Procedure
1 0 01 01
2 3 71 01 Press PAUSE (Write) button.
3 7 01 95
4 7 04 00
5 7 00 01 Press PAUSE (Write) button.
6 C A1 70
7 C A1
Change the data so that
brightness of the section A
and section B is equal.
8 C A1
Set a value obtained by
adding 3 to the
forementioned data, and
press PAUSE (Write) button.
9 7 01 95
10 7 04 01
11 7 00 01 Press PAUSE (Write) button.
12 3 70 10 Press PAUSE (Write) button.
13 3 70
Check the data changes to
“11”.
14 0 01 00
A
A
A
A
B
B
B
B
Fig. 6-1-16
3. Transmissive Mode White Balance Adjustment
(PP- 006 board)
Correct the white balance at transmissive mode.
If deviated, the LCD screen color cannot be reproduced.
Mode VTR stop (VCR mode)
Signal No signal
Measurement Point Check on LCD screen
Measuring Instrument
Adjustment Page C
Adjustment Address A2, A3
Specified Value LCD screen must not be colored
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 Procedure
1 0 01 01
2 3 71 01 Press PAUSE (Write) button.
3 7 01 95
4 7 04 00
5 7 00 01 Press PAUSE (Write) button.
6 C A2 20 Press PAUSE (Write) button.
7 C A3 20 Press PAUSE (Write) button.
8
Check that the LCD screen is
not colored. If not colored,
proceed to step 10.
9 C
A2
Change the data so that the
LCD screen is not colored.
(Note 3)
10 7 01 95
11 7 04 01
12 7 00 01 Press PAUSE (Write) button.
13 3 70 10 Press PAUSE (Write) button.
14 3 70 Check the data changes to “11”.
15 0 01 00
Note 3:
To write in the non-volatile memory (EEPROM), press
the PAUSE (Write) button each time to set the data.
A3