Sony CCD-TRV67 - Video Camera Recorder 8mm, Service Manual

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5-27
1-4. COLOR ELECTRONIC VIEWFINDER
SYSTEM ADJUSTMENT
(CCD-TR517)
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.
[Adjusting connector]
Most of the measuring points for adjusting the viewfinder system
are concentrated in CN982 of the VC-234 board.
Connect the Measuring Instruments via the CPC-7 jig (J-6082-382-
A).
The following table shows the Pin No. and signal name of CN982.
1. EVF Initial Data Input
Mode Camera
Subject Arbitrary
Adjustment Page 7
Adjustment Address A5 to A7, AB, B5 to C3, D5 to DC,
DE to E2
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2) Select page: 7, 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.
3) Select page: 0, address: 01, and set data: 00.
Pin No.
1
2
3
4
5
6
7
8
Signal Name
LANC SIG
XCPC IN
IR VIDEO
AFC F0
BPF MONI
PB RF
RF AGC IN
REG GND
Pin No.
9
10
11
12
13
14
15
16
Signal Name
RF AGC OUT
REC RF
RF SWP
CAP FG
EVF BL
EVF BL 4.75V
VCO
EVF VG
Address
A5
A6
A7
AB
B5
B6
B7
B8
B9
BA
BB
BC
BD
BE
BF
C0
C1
C2
C3
D5
D6
D7
D8
D9
DA
DB
DC
DE
DF
E0
E1
E2
Data
E3
E3
E3
F7
88
4C
00
A0
90
64
24
00
80
05
C9
25
00
08
33
6D
63
A7
93
0F
8D
83
1D
90
CA
0A
13
1F
Remark
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
VCO adj.
Fixed data
Fixed data
RGB AMP adj.
Fixed data
White balance adj.
White balance adj.
Contrast adj.
Fixed data
Backlight consumption current adj.
Backlight consumption current adj.
Backlight consumption current adj.
Fixed data
CN982
1
16
Screw driver (–)
CPC lid (BT)
Fig. 5-1-13.