Lcd System Adjustment; Lcd Automatic Adjustment (Pd-225 Board) - Sony DCR-PC350 Service Manual

1-5.

LCD SYSTEM ADJUSTMENT

Note1: When replacing the LCD unit, be careful to prevent damages
caused by static electricity.
Note2: Before performing the adjustments, check the data of page: 0,
address: 10 is "00". If not, set data: 00 to this address.
Note3: NTSC model : DCR-PC350
PAL model : DCR-PC350E
Switch setting:
LCD panel ............................................................................. Open
DCR-PC350/PC350E

1. LCD Automatic Adjustment (PD-225 board)

This adjustment does the following adjustment items automatically.
VCO adjustment
Contrast adjustment
Mode
Subject
Adjustment Page
Adjustment Address
Note1: The data of page: 0, address: 10 must be "00".
Adjusting method:
Order Page Address Data
1 0 01
2 C 70
3 3 01
4 3 02
5 3 03
6 C 50
7
8
9
10 C 51
11 C 70
12 0 01
Note2: If the data is "01", adjustment has errors. Contents of the error is
written into page: 3, addresses: C6. See the following table.
Data of page: 3,
address: C6
58 VCO adjustment error
60 Contrast adjustment error
Note3: Refer to "Table 6-4-1. Hexadecimal-decimal Conversion Table".
6-42
CAMERA-TAPE
Arbitrary
C
50, 51 (VCO adj.)
58 (Contrast adj.)
Procedure
01 Set the data.
00 Set the data, and press PAUSE
button.
5A Set the data, and press PAUSE
button.
Check that the data changes to
"00".
Check that the data is "00".
(Note2)
Read the data, and this data is
named D .
50
Convert D to decimal notation,
50
and obtain D '. (Note3)
50
Calculate D ' using following
51
equations (Decimal calculation)
[NTSC model]
When D ' 245
50
D ' = D ' + 10
51 50
When D ' > 245
50
D ' = 255
51
[PAL model]
When D ' 10
50
D ' = D ' – 10
51 50
When D ' < 10
50
D ' = 0
51
Convert D ' to a hexadecimal
51
number, and obtain D
51
D Set the data, and press PAUSE
51
button.
41 Set the data, and press PAUSE
button.
00 Set the data.
Contents of error
. (Note3)