Vco Adjustment (Pd-100 Board); Horizontal Position Check (Pd-100 Board); D Range Adjustment (Pd-100 Board) - Sony DCR-TRV5 Service Manual

2. VCO Adjustment (PD-100 board)

Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
Mode VTR stop
Signal No signal
Pin 8 of CN5501 (HSY)
Measurement Point
Measuring Instrument Frequency counter
Adjustment Page D
Adjustment Address 65
Specified Value f = 15734 ± 30Hz (NTSC)
f = 15625 ± 30Hz (PAL)
Note: Press the DISPLAY button (FP-699 board S003) and erase the screen
indictors on the LCD screen.
Connections:
Connect Pin 9 (SYF) and Pin 0 (GND) of CN5501 with a jumper
wire.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Adjust the power supply voltage so that the DC voltage of the
battery terminal becomes 7.2 ± 0.1Vdc.
3) Select page: D, address: 65, change the data and set the HSY
frequency (f) to the specified value.
4) Press the PAUSE button of the adjustment remote commander.
5) Adjust the power supply voltage so that the DC voltage of the
battery terminal becomes 8.4Vdc.
6) Select page: 0, address: 01, and set data: 00.

3. Horizontal Position check (PD-100 board)

Mode VTR playback
Signal Alignment tape:
CH1: Pin 7 of CN5501
Measurement Point
CH2: Pin 8 of CN5501 (HSY)
Measuring Instrument Oscilloscope
Specified Value T = 1.5 ± 0.3 sec (NTSC)
T = 3.1 ± 0.3 sec (PAL)
Checking method:
1) Check that the delay time (T) satisfies the specified value.
PANEL XHD
1.5V
HSY
1.5V
Fig. 5-1-16
For audio operation check
(XH5-3 (NTSC))
(XH5-3P (PAL))
(PANEL XHD)
T

4. D range Adjustment (PD-100 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).
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 Input the following data to page: D, address: 82 and 83
Note: Press the PAUSE button of the adjustment remote commander
each time to set the data.
Address
82
Data 00
3) Select page: D, address: 63, 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 adjustment remote commander.
5) Input the following data to page: D, address: 82 and 83.
Note: Press the PAUSE button of the adjustment remote commander
each time to set the data.
Address 82
Data
20
6) Select page: 0, address: 01, and set data: 00.
For NTSC model
Pedestal
For PAL model
Pedestal
5-22
VTR playback
Alignment tape:
For audio operation check
(XH5-3 (NTSC))
(XH5-3P (PAL))
Pin 3 of CN5501 (VG)
External trigger : Pin 4 of CN5501
(PANEL COM)
Oscilloscope
D
63
A = 2.98 ± 0.05V
83
00
83
20
Pedestal
2H
Pedestal
2H
Fig. 5-1-17
A
A