Lcd System Adjustment; Lcd Initial Data Input - Sony DSC-F55 Service Manual

1-5.

LCD SYSTEM ADJUSTMENT

Before perform the LCD system adjustments, check that the specified
values of "VIDEO SYSTEM ADJUSTMENT" are satisfied.
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 CN801 of the SY-54 board.
Connect the Measuring Instruments via the CPC-9 jig (J-6082-393-
C, Note4). To operate the adjustment remote commander, connect
the power supply terminal of CPC-9 jig to the DC power supply
(6.0 to 7.2Vdc).
The following table shows the Pin No. and signal name of CN801.
Note 4: The old CPC-9 jig (Parts code: J-6082-393-B) cannot be used,
because it cannot operate the adjustment remote commander.
Pin No.
1
2
3
4
5
6
7
8
9
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Signal Name Pin No.
MC PA05 10
MC TRST 11
MC TDI 12
REG GND 13
HD 14
SYS V 15
HSY 16
COM 17
VG 18
Table 5-1-6.
SY-54 board CN801
18
1
18 pin flexible board (Note)
Note: Don't use the 12 pin flexible board
of CPC-9 jig.
It causes damage to the unit.
Remove the check cover.
Be sure to refer to "2-1.Cabinet
(front) assembly and check cover"
on page 2-1.
Fig.5-1-17.

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: D, and input the data in the following table.
Note: To write in the non-volatile memory (EEPROM), press the
3) Select page: 0, address:01, and set data: 00.
Address
1C
1D
80
81
Signal Name
82
UNREG
83
LANC IN
84
LANC OUT
85
MC TCK
86
CV OUT
MC TDO 87
MC TMS
88
NT/XPAL
MC SYS 8D
8E
8F
5-29
PLAY
Arbitrary
D
1C, 1D, 80 to 88, 8D to 8F
PAUSE button of the adjustment remote commander each time
to set the data.
Data Remark
00 Fixed data
2C Fixed data
BC Bright adj.
80 Color adj.
B9 White balance adj.
B7 White balance adj.
BE Contrast adj.
C8 D range adj.
7C V-COM level adj.
VCO adj. (NTSC)
50
Fixed data (PAL)
74 V-COM adj.
VCO adj. (PAL)
50
Fixed data (NTSC)
13 Fixed data
11 Fixed data