Lcd System Adjustment - Sony MVC-FD81 Service Manual

1-4.

LCD SYSTEM ADJUSTMENT

Note 1: The back light (fluorescent tube) is driven by a high voltage AC
power supply. Therefore, do not touch the back light holder to
avoid electrical shock.
Note 2: When replacing the LCD unit, be careful to prevent damages
caused by static electricity.
Note 3: Set the LCD BRIGHT to the center.
[Adjusting connector]
Most of the measuring points for adjusting the LCD system are
concentrated in CN802 of the PK-44 board.
Connect the Measuring Instruments via the CPC-9 jig (J-6082-393-B).
The following table shows the Pin No. and signal name of CN802.
Pin No. Signal Name
1 PANEL B-Y
2 PANEL Y
3 PANEL R-Y
4 REG GND
5 JIG XHD
6 JIG XVD
7 HSY
8 COM
9 VG
Table 5-1-9.
PK-44 board
CN802
Insulator side
Note: Don't use the 12 pin flexible board of
CPC-9 jig. It causes damage to the unit.
Fig. 5-1-12.
[Alignment disk]
Use the alignment disks (two disks as pair) shown in below.
Disk-1: TFD2-1(+) (Parts code; 8-967-990-01)
Disk-2: TFD2-2(-) (Parts code; 8-967-990-11)
Contents of alignment disk
TFD2-1(+): (Common signal) + (+17.5 µm alignment)
TFD2-2(-): (Common signal) + (–17.5 µm alignment)
Common signal
File name Signal
MVC-001C.JPG Color bars
MVC-002M.JPG Monoscope
MVC-003V.JPG V-COM adjustment signal
MVC-004W.JPG 100% white
MVC-005H.JPG 50% white
MVC-006T.JPG Stair-step signal of 10 step
MVC-007R.JPG Red single color
MVC-008G.JPG Green single color
MVC-009B.JPG Blue single color
MVC-010D.JPG Camera color bars
MVC-011N.JPG Camera monoscope
Pin No. Signal Name
10 UNREG
11 LANC IN
12 LANC OUT
13 XPOWER SW
14 MAKER RECOG
15 INDEX
16 TRACK 00
17 JIG VCO
18 FDD RF
18 pin flexible board (Note)
1. LCD Initial Data Input
Mode
Signal
Adjustment Page
Adjustment Address
Adjusting method:
1) Select page: 0, address:01, and set data: 01.
2) Select page: F, and input the data in the following table.
Note: To write in the non-volatile memory (EEPROM), press the
PAUSE button of the adjustment remote commander each time
to set the data.
Address Data
30 BC
31 80
32 B9
33 B7
34 BE
35 50
36 74
37 C8
38 7C
3B 72
3C 22
3D 11
3E 2E
3F 00
40 11
41 15
42 00
43 00
44 44
45 48
46 33
4A 9A
E0 1B
Processing after Completing Adjustment
1) Select page: 3, address: 00, and set data: 29.
2) Select page: 3, address: 01, and set data: 29, and press the
PAUSE button of the adjustment remote commander.
5-18
Playback
Arbitrary
F
30 to 38, 3B to 46, 4A, E0
Remark
Bright adjustment
Color adjustment
White balance adjustment
White balance adjustment
Contrast adjustment
VCO adjustment
V-COM adjustment
D range adjustment
V-COM level adjustment
Fixed value
Fixed value
Fixed value
Fixed value
Fixed value
Fixed value
Fixed value
Fixed value
Fixed value
Fixed value
Fixed value
Fixed value
Fixed value
Fixed value