Read Sony CCD-TRV138 / CCD-TRV238E / CCD-TRV338 / CCD-TRV438E (serv.man2) Service Manual online
6-24
CCD-TRV138/TRV238E/TRV338/TRV438E
3. LCD V-COM Adjustment (PD-204 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.
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 (PLAY/EDIT mode)
Signal
No signal
Measurement Point
Check on LCD screen
Measuring Instrument
Adjustment Page
C
Adjustment Address
52
Specified Value
The brightness difference between
the section-A and section-B is
minimum
the section-A and section-B is
minimum
Note 1: Perform “LCD Level Adjustment” before this adjustment.
Note 2: Check that the data of page: 0, address: 10 is “00”.
Note 2: Check that the data of page: 0, address: 10 is “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
C
52
Change the data so that
brightness of the section A
and section B is equal.
brightness of the section A
and section B is equal.
3
C
52
Subtract 8 from the data.
4
C
52
Press PAUSE button.
5
0
01
00
A
A
A
A
B
B
B
B
Fig. 6-1-14
Ver. 1.1 2007.11
2. LCD Level Adjustment (PD-204 Board) (TYPE SO)
RadarW
RadarW
RadarW
This adjustment does the following items automatically.
VCO Adjustment
RGB AMP Adjustment
Contrast Adjustment
PSIG black Adjustment
VCO Adjustment
RGB AMP Adjustment
Contrast Adjustment
PSIG black Adjustment
Mode
VTR stop (PLAY/EDIT mode)
Signal
No signal
Adjustment Page
C
Adjustment Address
50, 51 (VCO Adjustment)
53 (RGB AMP Adjustment)
58 (Contrast Adjustment)
5B (PSIG black Adjustment)
53 (RGB AMP Adjustment)
58 (Contrast Adjustment)
5B (PSIG black Adjustment)
Note 1: Check that the data of page: 0, address: 10 is “00”.
Note 2: NTSC model: CCD-TRV138/TRV338
Note 2: NTSC model: CCD-TRV138/TRV338
PAL model: CCD-TRV238E/TRV438E
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
3
01
5A
Press PAUSE button. (Note 3)
3
3
02
Check the data changes to
“00”.
“00”.
4
3
03
Check that the data is “00”.
(Note 4)
(Note 4)
5
C
50
Read the data and this data is
named D
named D
50
.
6
Convert D
50
to decimal notation,
and obtain D
50
’. (Note 5)
7
Calculate D
51
’ using following
equations. (decimal calculation)
D
D
51
’ = D
50
’ + 10 (NTSC model)
D
51
’ = D
50
’ – 10 (PAL model)
8
Convert D
51
’ to a hexadecimal
number, and obtain D
51
.
(Note 5, 6)
9
C
51
D
51
Press PAUSE button.
10
0
01
00
Note 3: The adjustment data will be automatically input to page:
C, address: 50, 51, 53, 58 and 5B.
Note 4: If the data is other than “00”, adjustment has errors.
For the error contents, see the following table.
Note 5: Refer to table 6-4-1. “Hexadecimal-decimal conversion
table”.
Note 6: If D
51
’ > 255, then D
51
= FF (NTSC model)
If D
51
’ < 0, then D
51
= 00 (PAL model)
Page Address Data
Error contents
3
03
01
Adjustment time out.
C6
53
RGB AMP adjustment error
54
Contrast adjustment error
56
PSIG black adjustment error
62
VCO adjustment error
Click on the first or last page to see other CCD-TRV138 / CCD-TRV238E / CCD-TRV338 / CCD-TRV438E (serv.man2) service manuals if exist.