Vco Adjustment (Vf-126 Board); Bright Adjustment (Vf-126 Board) - Sony CCD-TR913E Service Manual

2. VCO Adjustment (VF-126 board)

Set the VCO free-run frequency. If deviated, the EVF screen will be
blurred.
Mode Camera
Subject Arbitrary
Pin !∞ of CN910 (VCO) on VC-214
Measurement Point
board
Measuring Instrument Oscilloscope (DC range)
Adjustment Page E
Adjustment Address C5
Specified Value A=1.8 ± 0.1V
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 01, set data: 55, and press the PAUSE
button of the adjustment remote commander.
3) Check the GND level of the oscilloscope.
4) Select page: E, address: C5, change the data and set the VCO
output voltage (A) to the specified value.
5) Press the PAUSE button.
6) Select page: 2, address: 01, set data: 00, and press the PAUSE
button.
7) Select page: 0, address: 01, and set data: 00.
H
A
Fig. 5-1-12.

3. Bright Adjustment (VF-126 board)

Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
Mode
Subject
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: 2, address: 01, set data: 55, and press the PAUSE
button of the adjustment remote commander.
3) Select page: E, address: C6, change the data and set the voltage
(A) between the reversed waveform pedestal and non-reversed
waveform pedestal to the specified value.
4) Press the PAUSE button.
5) Select page: 2, address: 01, set data: 00, and press the PAUSE
button.
6) Select page: 0, address: 01, and set data: 00.
A
GND level
(0Vdc)
5-22
Camera
Arbitrary
Pin !§ of CN910 (EVF VG) on
VC-214 board
Oscilloscope
E
C6
A=7.04 ± 0.01V
Pedestal
Pedestal
2H
Fig. 5-1-13.