Lcd System Adjustments; Vco Adjustment (Pd-166 Board) - Sony DCR-PC101E Service Manual

1-5.

LCD SYSTEM ADJUSTMENTS

Before perform the LCD system adjustments, check that the data
of page: 0, address: 10 is "00".
If not, select page: 0, address: 10, and set the data "00".
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 BRT", "LCD COLOR" to the center with
the function settings of the touch panel.
[Adjusting connector]
Most of the measuring points for adjusting the LCD system are
concentrated in CN803 of the PD-166 board.
Connect the Measuring Instruments via the CPC-jig for LCD (J-
6082-529-A).
The following table shown the Pin No. and signal name of CN803.
Pin No. Signal Name
1 VG
2 COM
3 GND
4 HSY
5 N.C.
6 PSIG
CN803 of PD-166 board
Inverter transformer unit
Fig. 5-1-17

1. VCO Adjustment (PD-166 board)

Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
Note 1: Check that the data of page: 0, address: 10 is "00".
Note 2: NTSC model: DCR-PC101
Adjusting method:
CPC jig for LCD panel
(J-6082-529-A)
Note 3: Refer to table 5-4-1. "Hexadecimal-decimal conversion
Note 4: If D
5-37
Mode CAMERA
Subject Not required
Measurement Point Pin 4 of CN803 (HSY)
Measuring Instrument Frequency counter
Adjustment Page C
Adjustment Address 61, 62
f = 15734 ± 30 Hz (NTSC)
Specified Value
f = 15625 ± 30 Hz (PAL)
PAL model: DCR-PC101E
Order Page Address Data
1 0 01 01
2 C 61
3 C 61
4 C 61
5
6
7
8 C 62 D
62
9 0 01 00
table"
' > 255, then D
62
If D ' < 0, then D = 00 (PAL model)
62 62
DCR-PC101/PC101E
Procedure
Change the data and set the
frequency (f) to the specified
value.
Press PAUSE button.
Read the data and this data is
named D .
61
Convert D to decimal
61
notation, and obtain D '.
61
(Note 3)
Calculate D ' using
62
following equations.
(decimal calculation)
D ' = D ' + 21 (NTSC model)
62 61
D ' = D ' – 21 (PAL model)
62 61
Convert D ' to a hexadeci-
62
mal number, and obtain D
(Note 3, 4)
Press PAUSE button.
= FF (NTSC model)
62
.
62