Color Electronic Viewfinder System Adjustment; Vco Adjustment (Vc-210 Board) - Sony Handycam DCR-PC1 Service Manual

1-4. COLOR ELECTRONIC VIEWFINDER
SYSTEM ADJUSTMENT
Note 1: When replacing the LCD unit, be careful to prevent damages
caused by static electricity.
Note 2: Switch setting
EVF ON/OFF (VC-125 board S5500)
..................................................ON (when the EVF is pulled out)
PANEL OPEN/CLOSE (VC-210 board S2201)
.............................................................CLOSE (Press the switch)
VF BRIGHT (Menu display)...............................................center
[Adjusting connector]
Most of the measuring points for adjusting the LCD are concentrated
in CN2904 of the VC-210 board.
Connect the measuring instruments via the CPC-6 flexible jig (J-
6082-370-A) and CPC-6 terminal board jig (J-6082-371-A). The
following table shows the pin numbers and signal name of CN2904.
Pin No. Signal Name
1 LACN SIG
3 EVF BL–
5 EVF VCO
7 C1 EP
9 GND
11 GND
13 TCK
15 TDO
17 SWP
19 GND
Pin No. Signal Name
2 EVF BL+
4 EVF VG
6 GND
8 DATA VALID
10 GND
12 TMS
14 TDI
16 GND
18 RF IN/LANC JACK IN
20 RF MON

1. VCO Adjustment (VC-210 board)

Set the VCO free-run frequency. If deviated, the LCD display will
be blurred.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 0C, set data: 20, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 3, address: 22, set data: 02, and press the PAUSE
button of the adjustment remote commander.
4) Check the GND level of the oscilloscope.
5) Select page: D, address: 75, change the data and set the VCO
output voltage (A) to the specified value.
6) Press the PAUSE button of the adjustment remote commander.
7) Select page: 3, address: 22, set data: 00, and press the PAUSE
button of the adjustment remote commander.
8) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button of the adjustment remote commander.
9) Select page: 0, address: 01, and set data: 00.
H
5-18
VTR stop
No signal
Pin 5 of CN2904 (EVF VCO)
Oscilloscope (DC range)
D
75
+ 0.45
A = 1.75 V
– 0.35
A
GND level
(0Vdc)
Fig. 5-1-12