Vco Adjustment (Vf-119 Board); Bright Adjustment (Vf-119 Board) - Sony CCD-TR315E Service Manual

2. VCO Adjustment (VF-119 board)

Set the VCO free-run frequency. If deviated, the EVF screen will be
blurred.
Mode VTR stop
Signal No signal
Pin !∞ of CN910 (VCO) on VC-215
Measurement point
board
Measuring instrument Oscilloscope (DC range)
Adjustment page E
Adjustment address C2
Specified value A = 1.8 ± 0.1Vdc
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 55, and press the PAUSE
button of the adjusting remote commander.
3) Check the GND level of the oscilloscope.
5) Select page: E, address: C2, change the data and set the VCO
output voltage (A) to the specified value.
4) Press the PAUSE button of the adjusting remote commander.
5) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.
H
A
Fig. 5-1-13.

3. Bright Adjustment (VF-119 board)

Set the level of the VIDEO signal for driving the LCD to the speci-
fied value. If deviated, the screen image will be blackish or satu-
rated (whitish).
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: 01, set data: 55, and press the PAUSE
button of the adjusting remote commander.
3) Select page: E, address: C3, 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 of the adjusting remote commander.
5) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.
GND level
(0 Vdc)
5-25
VTR stop
No signal
Pin !§ of CN910 (EVF VG) on VC-215
board
Oscilloscope
E
C3
A = 7.2 ± 0.1 V
A
2H
Fig. 5-1-14.