Ir Transmitter Adjustments; Ir Video Carrier Frequency Adjustment; (Vc-240/241 Board); Ir Video Deviation Adjustment (Vc-240/241 Board) - Sony DCR-TRV6 Service Manual

3-5.

IR TRANSMITTER ADJUSTMENTS

Adjust using a IR receiver jig (J-6082-383-A).
Switch setting:
SUPER LASER LINK ........................... ON (Red LED is lit)

1. IR Video Carrier Frequency Adjustment

(VC-240/241 board)

Mode VTR stop
Signal Arbitrary
Measurement Point Pin 5 of CN003 of IR receiver jig (RF)
(Or Pin qh of IC1901 of VC-240/241
board)
Measuring Instrument Frequency counter
Adjustment Page F
Adjustment Address 6E
Specified Value f = 11.85 ± 0.05 MHz
Connection of Equipment
Connect the measuring device as shown in the following figure,
and adjust.
Main unit IR receiver jig
Fig. 5-3-11.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 0C, set data: 08, and press the PAUSE
button of the adjustment remote commander.
3) Select page: F, address: 6E, 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: 3, address: 0C, 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 (VC-240/241 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: 3, address: 0C, set data: 02, and press the PAUSE
button of the adjustment remote commander.
3) Select page: F, address: 6D, and change the data, set the video
signal amplitude (A) to the specified value.
4) Press the PAUSE button of the adjustment remote commander.
5) Select page: 3, address: 0C, set data: 00, and press the PAUSE
button of the adjustment remote commander.
6) Select page: 0, address: 01, and set data: 00.
5-60
VTR stop
Arbitrary
VIDEO OUT terminal of IR receiver jig
(Terminated at 75 )
Oscilloscope
F
6D
A = 1.00 ± 0.05 V
Oscilloscope
75
VIDEO
OUT
75 (1-247-804-11)
Fig. 5-3-12.
H
Fig. 5-3-13.
A