Ir Transmitter Adjustments; Ir Video Carrier Frequency Adjustment (Cb-58 Board); Ir Video Deviation Adjustment (Cb-58 Board) - Sony DCR-TRV7 Service Manual

3-5. 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-58 board)
Mode VTR stop
Subject Arbitrary
TP607 of IR receiver jig (RF)
Measuring point
(Or Pin !§ of IC8401)
Measuring instrument Frequency counter
Adjusting page D
Adjusting address 90
Specified value
f = 11.85 ± 0.05 MHz
Connection of Equipment
Connect the measuring devices as shown in the following figure,
and adjust.
Main unit IR receiver jig
Fig. 5-3-13.
Adjusting method:
1) Set data: 01 to page: 0, address: 01.
2) Set data: 10 to page: 2, address: 12, and press the PAUSE button
of the adjusting remote commander.
3) Change the data of page: D, address: 90, and set the video carrier
frequency (f) to the specified value.
4) Press the PAUSE button of the adjusting remote commander.
5) Set data: 00 to page: 2, address: 12, and press the PAUSE button
of the adjusting remote commander.
6) Set data: 00 to page: 0, address: 01.
Frequency counter
TP607
2.

IR Video Deviation Adjustment (CB-58 Board)

Mode
Signal
Measuring point
Measuring instrument
Adjusting page
Adjusting address
Specified value
Connection of Equipment
Connect the measuring devices as shown in the following figure,
and adjust.
IR receiver jig
Main unit
Adjusting method:
1) Set data: 01 to page: 0, address: 01.
2) Change the data of page: D, address: 91, and set the video signal
amplitude (A) to the specified value.
3) Press the PAUSE button of the adjusting remote commander.
4) Set data: 00 to page: 0, address: 01.
For NTSC model
A
For PAL model
White (100%)
A
5–53
VTR playback
Audio operation check tape,
color bar portion
VIDEO OUT terminal of IR receiver
jig (Terminated at 75 )
Oscilloscope
D
91
A = 1.00 ± 0.05V
Oscilloscope
75Ω
VIDEO
OUT
75Ω (1-247-804-11)
Fig. 5-3-14.
White (100%)
H
H
Fig. 5-3-15.