Ir Transmitter Adjustments (Ccd-Trv98); Ir Video Carrier Frequency Adjustment (Mi-041 Board); Ir Video Deviation Adjustment (Mi-041 Board) - Sony CCD-TR618 Service Manual

3-5. IR TRANSMITTER ADJUSTMENTS
(CCD- TRV98)
Adjust using the IR receiver jig (J-6082-383-A).
Note: If the distance between the IR receiver jig and the camcorder is
below 1m, cover the LASER LINK emitter with a ND filter. (For
example, when the distance is 30cm to 50cm, cover the LASER
LINK emitter with a ND filter 1.0.)
Switch setting:
LASER LINK ........................................ ON (Red LED is lit)
1. IR Video Carrier Frequency Adjustment
(MI-041 board)
Mode VTR stop
Signal Arbitrary
Measurement Point Pin 5 of CN003 of IR receiver jig (RF)
(Or Pin qh of IC3901 of MI-041 board)
Measuring Instrument Frequency counter
Adjustment Page F
Adjustment Address 80
Specified Value f = 11.85 ± 0.05 MHz (*1)
f = 11.55 ± 0.05 MHz (*2)
*1: IC3901 of MI-041 board is LA9511.
*2: IC3901 of MI-041 board is AN2920.
Connection of Equipment:
Connect the measuring device as shown in the following figure,
and adjust.
IR receiver jig
Main unit
Fig. 5-3-12.
Adjusting method:
Order Page Address Data
1 0 01 01
2 2 01 37
3 F 80
4 F 80
5 2 01 00
6 0 01 00
Frequency counter
Pin 5 of
CN003
Procedure
Set the data.
Set the data, and press PAUSE
button.
Change the data, and set the
video carrier frequency (f) to the
specified value.
Press PAUSE button.
Set the data, and press PAUSE
button.
Set the data.

2. IR Video Deviation Adjustment (MI-041 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.
IR receiver jig
Main unit
Adjusting method:
Order Page Address Data
1 0 01
2 2 01
3 F 7E
4 F 7E
5 2 01
6 0 01
5-47
VTR stop
Arbitrary
VIDEO OUT terminal of IR receiver
jig (Terminated at 75 )
Oscilloscope
F
7E
A = 0.87 ± 0.05 V
Oscilloscope
75
VIDEO
OUT
75 (1-247-804-11)
Fig. 5-3-13.
Procedure
01 Set the data.
39 Set the data, and press PAUSE
button.
Change the data, set the video
signal amplitude (A) to the
specified value.
Press PAUSE button.
00 Set the data, and press PAUSE
button.
00 Set the data.
H
Fig. 5-3-14.
A