Sony HVR-V1U Service Manual page 233

1. VCO Adjustment (OO-003 board)
Set the VCO free-run frequency. If deviated, the EVF screen will
be blurred.
Mode
Subject
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note 1: Check that the data of page: 0, address: 10 is "00".
Note 2: Refer to Table 6-4-1. "Hexadecimal-decimal conversion
table"
Note 3: If D ' > 255, then D
35
If D ' < 0, then D
34
Adjusting method for NTSC model:
Order Page Address Data
1 0
2 3
3 C
4 C
5 C
6
7
8
9 C
10 3
11 3
12 0
HVR-V1J/V1U/V1N/V1E/V1P/V1C
CAMERA
Not required
Pin 4 of CN1014 (EVF_VCO) on
TT-003 board
Frequency counter
C
34, 35
f = 15734 ± 30 Hz (NTSC)
f = 15625 ± 30 Hz (PAL)
= FF (NTSC model)
35
= 00 (PAL model)
34
Procedure
01 01
71 01 Press PAUSE (Write) button.
Change the data and set the
34
frequency (f) to the specified
value.
34 Press PAUSE (Write) button.
Read the data and this data is
34
named D .
34
Convert D to decimal
34
notation, and obtain D
(Note 2)
Calculate D ' using
35
following equations.
(decimal calculation)
D ' = D ' + 21
35 34
Convert D ' to a hexadeci-
35
mal number, and obtain D
(Note 2, 3)
35 D Press PAUSE (Write) button.
35
70 10 Press PAUSE (Write) button.
Check the data changes to
70
"11".
01 00
Adjusting method for PAL model:
Order Page Address Data
1 0
2 3
3 C
4 C
5 C
6
'.
34
7
8
.
35
9 C
10 3
11 3
12 0
6-75
Procedure
01 01
71 01 Press PAUSE (Write) button.
Change the data and set the
35
frequency (f) to the specified
value.
35 Press PAUSE (Write) button.
Read the data and this data is
35
named D .
35
Convert D to decimal
35
notation, and obtain D
(Note 2)
Calculate D ' using
34
following equations.
(decimal calculation)
D ' = D ' – 21
34 35
Convert D ' to a hexadeci-
34
mal number, and obtain D
(Note 2, 3)
34 D Press PAUSE (Write) button.
34
70 10 Press PAUSE (Write) button.
Check the data changes to
70
"11".
01 00
'.
35
.
34