Sony CCD TRV16 - Hi8 Handycam Camcorder, Service Manual, Page: 111 / 177

2. VCO Adjustment (PD-107 board)
Set the VCO freerun frequency. If deviated, the LCD screen will be
blurred.
Mode VTR stop
Signal No signal
Measurement point Pin
2
of CN5501 (VCO VOLTAGE)
of PD-107 board
Measuring instrument Oscilloscope
Adjustment page E
Adjustment address D6
Specified value A = 2.75 ± 0.02V
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: 2, address: 7D, and set data: 00.
4) Select page: E, address: D6, change the data and set the VCO
VOLTAGE (A) to the specified value.
5) Press the PAUSE button of the adjusting remote commander.
6)
Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
7) Select page: 0, address: 01, and set data: 00.
Fig. 5-1-22.
3. D range Adjustment (PD-107 board)
Set the D range of the RGB decoder used to drive the LCD to the
specified value. If deviated, the LCD screen will become blackish
or saturated (whitish).
Note1 : Press the DISPLAY button and erase the screen indictors
on the LCD screen.
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: 2, address: 7D, and set data: 00.
4) Select page: E, address: D4, change the data and set the voltage
(A) between the reversed waveform pedestal and non-reversed
waveform pedestal to the specified value.
5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 3, address: 01, set data: 00, and press the PAUSE
button of the adjusting remote commander.
7) Select page: 0, address: 01, and set data: 00.
Mode VTR stop
Signal No signal
Measurement point Pin
3
of CN5501 (VG) of PD-107
board
External trigger : Pin
4
of CN5501
(PANEL COM)
Measuring instrument Oscilloscope
Adjustment page E
Adjustment address D4
Specified value A = 3.62 ± 0.05V
Fig. 5-1-23.
H
A
GND level
(0 Vdc)
A
2H