Lcd System Adjustments - Sony MVC-FD97 Service Manual

1-6.

LCD SYSTEM ADJUSTMENTS

Before perform the LCD system adjustments, check that the
specified values of "VIDEO SYSTEM ADJUSTMENTS" are sat-
isfied.
Note 1: The back light (fluorescent tube) is driven with high volt-
age AC power. Therefore, do not touch the back light
directly, otherwise you will feel an electric shock.
Note 2: Taken an extreme care not to destroy the liquid crystal
display module by static electricity when replacing it.
Note 3: Set the LCD BRIGHT (Menu display) to the center.
[Adjusting connector]
Most of the measuring points for adjusting the LCD system are
concentrated in CN803 of the FC-85 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 CN803.
Pin No. Signal Name
1 FDDRF_B
2 FDDRF_A
3 INDEX
4 REG_GND
5 N. C.
6 TRACK_00
7 HSY
8 COM
9 VG
10 HI_UNREG
11 LANC_IN
[LCD type check]
By measuring the resistor value between Pin qd of CN803 and
Pin 4 of CN803, the type LCD can be discriminated.
FC-85 board CN803
Resistor value
4.7 kΩ
47 kΩ
22
1
CPC cover
FC-85 board
CN803
Fig. 5-1-28
5-42
Pin No. Signal Name
12 LANC_OUT
13 MAKER_RECOG
14 PF7
15 TXD
16 RXD
17 RESET
18 HI_VDD
19 EVF_BL+ (N.C.)
20 EVF_BL_4.75 (N.C.)
21 EVF_VG (N.C.)
22 EVF_VCO (N.C.)
LCD type
TYPE S
TYPE C
Volt ohm meter
qd pin
4 pin
1
22
CPC-12 jig
(J-6082-436-A)