Ir Transmitter Adjustments; Ir Video Carrier Frequency Adjustment; (Mr-44 Board); Ir Video Deviation Adjustment (Mr-44 Board) - Sony DCR-PC100 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

(MR-44 board)

Mode VTR stop
Signal Arbitrary
Measurement Point Pin 5 of CN003 of IR receiver jig (RF)
(Or Pin qh of IC7501 of MR-44 board)
Measuring Instrument Frequency counter
Adjustment Page C
Adjustment Address 28
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. 5-3-11.
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: C, address: 28, 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 (MR-44 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: C, address: 29, 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.
5-55
VTR stop
Arbitrary
VIDEO OUT terminal of IR receiver jig
(Terminated at 75 Ω)
Oscilloscope
C
29
A = 1.00 ± 0.05 V
Oscilloscope
75 Ω
VIDEO
OUT
75 Ω (1-247-804-11)
Fig. 5-3-12.
H
Fig. 5-3-13.
A