Color Electronic Viewfinder System Adjustment - Sony MVC-FD91 Service Manual

1-4. COLOR ELECTRONIC VIEWFINDER
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 FINDER/LCD switch to the FINDER side.
[Adjusting connector]
Most of the measuring points for adjusting the color electronic
viewfinder system are concentrated in CN701 of the PK-45 board.
Connect the Measuring Instruments via the CPC-12 jig (J-6082-
436-A).
The following table shows the Pin No. and signal name of CN701.
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
10 UNREG
11 LANC IN
Table 5-1-9.
PK-45 board
CN701
Insulator side
Fig. 5-1-16.
Pin No. Signal Name
12 LANC OUT
13 XPOWER SW
14 MAKER RECOG
15 INDEX
16 TRACK 00
17 JIG VCO
18 FDD RF
19 EVF BL+
20 EVF BL 4.75V
21 EVF VG
22 EVF VCO
CPC-12 jig
22 pin flexible
[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
MVC-001C.JPG
MVC-002M.JPG
MVC-003V.JPG
MVC-004W.JPG
MVC-005H.JPG
MVC-006T.JPG
MVC-007R.JPG
MVC-008G.JPG
MVC-009B.JPG
MVC-010D.JPG
MVC-011N.JPG
5-20
Signal
Color bars
Monoscope
V-COM adjustment signal
100% white
50% white
Stair-step signal of 10 step
Red single color
Green single color
Blue single color
Camera color bars
Camera monoscope