Sony DCR-TRV10 Service Manual - Page 114

COLOR ELECTRONIC VIEWFINDER SYSTEM ADJUSTMENT, Pin No., Signal Name, Adjusting connector]

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1-4. COLOR ELECTRONIC VIEWFINDER SYSTEM ADJUSTMENT Note 1: The back light (fluorescent tube) is driven by a high voltage AC power supply. Therefore, do not touch the back light holder to avoid electrical shock. Note 2: When replacing the LCD unit, be careful to prevent damages caused by static electricity. Note 3: Set the VF BRIGHT (Menu display) to the center. Note 4: As the PANEL CLOSE switch (FP-91 flexible board S96) is attached to the cabinet (R), this cabinet must be attached when performing adjustments. [Adjusting connector] Most of the measuring points for adjusting the viewfinder system are concentrated in CN2904 of the VC-217 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 CN2904. Pin No. Signal Name Pin No. Signal Name 1 LANC SIG 3 EVF BL - 5 EVF VCO 7 PD VG 9 H START 2 EVF BL + 4 EVF VG 6 GND 8 PD VCO 10 XHD/PSIG 11 PANEL COM 12 TMS 13 TCK 14 TDI 15 TDO 17 SWP 19 GND 16 GND 18 RF IN/LANC JACK IN 20 RF MON Table 5-1-7. CN2904 1 2 19 20 1. VCO Adjustment (DD-123 board) Set the VCO free-run frequency. If deviated, the EVF screen will be blurred. Mode VTR stop Signal Measurement Point Arbitrary Pin 5 of CN2904 (EVF VCO) on VC-217 board Measuring Instrument Oscilloscope (DC range) Adjustment Page D Adjustment Address 75 Specified Value A = 1.7 ± 0.05V Adjusting method: 1) Select page: 0, address: 01, and set data: 01. 2) Check the GND level of the oscilloscope. 3) Select page: D, address: 75, change the data and set the VCO output voltage (A) to the specified value. 4) Press the PAUSE button of the adjustment remote commander. 5) Select page: 0, address: 01, and set data: 00. H A Fig. 5-1-14. GND level (0Vdc) Remove the CPC cover Fig. 5-1-13. 5-28

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5-28
H
A
GND level
(0Vdc)
Pin No.
1
3
5
7
9
11
13
15
17
19
Signal Name
LANC SIG
EVF BL –
EVF VCO
PD VG
H START
PANEL COM
TCK
TDO
SWP
GND
Pin No.
2
4
6
8
10
12
14
16
18
20
Signal Name
EVF BL +
EVF VG
GND
PD VCO
XHD/PSIG
TMS
TDI
GND
RF IN/LANC JACK IN
RF MON
1-4.
COLOR ELECTRONIC VIEWFINDER
SYSTEM ADJUSTMENT
Note 1:
The back light (fluorescent tube) is driven by a high voltage AC
power supply. Therefore, do not touch the back light holder to
avoid electrical shock.
Note 2:
When replacing the LCD unit, be careful to prevent damages
caused by static electricity.
Note 3:
Set the VF BRIGHT (Menu display) to the center.
Note 4:
As the PANEL CLOSE switch (FP-91 flexible board S96) is
attached to the cabinet (R), this cabinet must be attached when
performing adjustments.
[Adjusting connector]
Most of the measuring points for adjusting the viewfinder system
are concentrated in CN2904 of the VC-217 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 CN2904.
Table 5-1-7.
1. VCO Adjustment (DD-123 board)
Set the VCO free-run frequency. If deviated, the EVF screen will be
blurred.
Mode
VTR stop
Signal
Arbitrary
Measurement Point
Pin
5
of CN2904 (EVF VCO) on
VC-217 board
Measuring Instrument
Oscilloscope (DC range)
Adjustment Page
D
Adjustment Address
75
Specified Value
A = 1.7 ± 0.05V
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2)
Check the GND level of the oscilloscope.
3)
Select page: D, address: 75, change the data and set the VCO
output voltage (A) to the specified value.
4)
Press the PAUSE button of the adjustment remote commander.
5)
Select page: 0, address: 01, and set data: 00.
Fig. 5-1-13.
Fig. 5-1-14.
CN2904
1
2
19
20
Remove the CPC cover