Ir Transmitter Adjustments; Ir Video Carrier Frequency Adjustment (Cb-61 Board); Ir Video Deviation Adjustment (Cb-61 Board) - Sony GV-D300 Service Manual

3-6.

IR TRANSMITTER ADJUSTMENTS

Adjust using a IR receiver jig (J-6082-383-A).
Switch setting:
LASER LINK ................................................ ON (Red LED is lit)
1. IR Video Carrier Frequency Adjustment
(CB-61 board)
Mode VTR stop
Signal Arbitrary
Pin 5 of CN003 of IR receiver jig
Measurement Point
(RF) (Or Pin !§ of IC8401)
Measuring Instrument Frequency counter
Adjustment Page D
Adjustment Address 90
Specified Value f = 11.85 ± 0.05 MHz
Connection of Equipment
Connect the measuring device as shown in the following figure,
and adjust.
IR receiver jig
Main unit
Fig. 5-3-20
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 2, address: 12, set data: 10, and press the PAUSE
button of the adjustment remote commander.
3) Select page: D, address: 90, change the data, and set the video
carrier frequency (f) to the specified value.
4) Press the PAUSE button of the adjustment remote commander.
5) Select page: 2, address: 12, set data: 00, and press the PAUSE
button of the adjustment remote commander.
6) Select page: 0, address: 01, and set data: 00.
Frequency counter
CN003
pin 5

2. IR Video Deviation Adjustment (CB-61 board)

Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Connection of Equipment:
Connect the measuring device as shown in the following figure,
and adjust.
Main unit IR receiver jig
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 91, and change the data, set the video
signal amplitude (A) to the specified value.
3) Press the PAUSE button of the adjustment remote commander.
4) Select page: 0, address: 01, and set data: 00.
For NTSC model
A
For PAL model
White (100%)
A
5-29
Playback
Alignment tape:
For audio operation check
(XH5-3 (NTSC))
(XH5-3P (PAL))
VIDEO OUT terminal of IR receiver
jig (Terminated at 75 Ω)
Oscilloscope
D
91
A = 1.00 ± 0.05 V
Oscilloscope
75 Ω
VIDEO
OUT
75 Ω (1-247-804-11)
Fig. 5-3-21
White (100%)
H
H
Fig. 5-3-22