Sony DCR-TRV230E Service Manual page 167

1-4. ELECTRONIC VIEWFINDER SYSTEM
ADJUSTMENT
Note1: When replacing the LCD unit, be careful to prevent damages
caused by static electricity.
Note2: Switch setting:
LCD panel ........................................................................... Close
Note3: CF-079 board: DCR-TRV230E/TRV235E/TRV325E/TRV330E
CF-080 board: DCR-TRV430E/TRV530E
[Adjusting connector]
Most of the measuring points for adjusting the viewfinder system
are concentrated in CN1108 of VC-254 board.
Connect the Measuring Instruments via the CPC-13 jig (J-6082-
443-A).
The following table shows the Pin No. and signal name of CN1108.
Pin No. Signal Name
1 SWP
2 AFC F0
3 BPF MONI
4 FO ADJ RF IN
5 PB RF
6 REG GND
7 RF AGC OUT
8 VC RF SWP
9 EVF VR (*1), COM DC (*2)
10 EVF VB (*1), N.C. (*2)
*1 : CF-079 board (Part No. suffix: 11)
CF-080 board (Part No. suffix: 11 or 12)
*2 : CF-079 board (Part No. suffix: 12 or later)
CF-080 board (Part No. suffix: 13 or later)
Table 5-1-10.
CN1108
1
20
Remove the
CPC lid (BT)
MI screw (M2 × 4) (H)
Fig. 5-1-13.
Pin No. Signal Name
11 VCO
12 EVF VG
13 DV RF SWP
14 RF IN
15 CAP FG
16 RF MON
17 TMS
18 TCK
19 TDO
20 TDI
1. VCO Adjustment (CF-079/080 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".
5-26
Camera
Arbitrary
Pin qa of CN1108 of VC-254 board
(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
93
D Set the data, and press PAUSE
93
button.
00 Set the data.
. (Note)