Color Electronic Viewfinder System; Adjustment; Vco Adjustment (Vc-260 Board) - Sony DCR-TRV15E Service Manual

1-4. COLOR ELECTRONIC VIEWFINDER
SYSTEM ADJUSTMENT
Note1: When replacing the LCD unit, be careful to prevent damages
caused by static electricity.
Note2: As the PANEL CLOSE switch is attached to the cabinet (R), this
cabinet must be attached when performing adjustments.
If you perform the adjustments with cabinet (R) removed, set the
following data.
1) Select page: 2, address: 0E, and set data: 67.
2) Select page: 2, address: 0F, and set data: 01.
Reset the data after completing adjustment.
1) Select page: 2, address: 0E, and set data: 00.
2) Select page: 2, address: 0F, and set data: 00.
[Adjusting connector]
Most of the measuring points for adjusting the viewfinder system
are concentrated in CN002 of the VC-260 board.
Connect the Measuring Instruments via the CPC-8 jig (J-6082-388-
A).
The following table shows the Pin No. and signal name of CN002.
Pin No. Signal Name
1 LANC SIG
3 EVF BL–
5 EVF VCO
7 PANEL VG
9 H START
11 PANEL COM
13 TCK
15 JIG TDO
17 SWP
19 GND
Table 5-1-9.
CN002
20 19
2
1
Pin No. Signal Name
2 EVF BL+
4 EVF VG
6 GND
8 PD VCO
10 XHD/PSIG
12 TMS
14 JIG TDI
16 GND
18 RF IN/LANC JACK IN
20 RF MON
Remove the CPC lid

1. VCO Adjustment (VC-260 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
Adjusting method:
Order Page Address Data
1 0 01
2 D 92
3 D 92
4 D 92
5
6
7
8 D 93
9 0 01
Note: Refer to "Table 5-4-1. Hexadecimal-decimal Conversion Table".
5-27
Camera
Arbitrary
Pin 5 of CN002 (EVF VCO)
Frequency counter
D
92, 93
f = 15625 ± 30Hz
Procedure
01 Set the data.
Change the data and set the VCO
frequency (f) to the specified value.
Press PAUSE button.
Read the data, and this data is
named D .
92
Convert D to decimal notation,
92
and obtain D '. (Note)
92
Calculate D ' using following
93
equations (Decimal calculation)
When D ' 24
92
D '= D '–24
93 92
When D ' < 24
92
D '= 0
93
Convert D ' to a hexadecimal
93
number, and obtain D . (Note)
93
D Set the data, and press PAUSE
93
button.
00 Set the data.