Servo System Adjustments; T Reel Fg Duty Adjustment (Rj-77 Board); Switching Position Adjustment (Rj-77 Board) - Sony GV-D300 Service Manual

3-4. SERVO SYSTEM ADJUSTMENTS

1. T Reel FG Duty Adjustment (RJ-77 Board)

Measurement Point Display data of page: C, address: 6F
Measuring Instrument Adjustment remote commander
Adjustment Page C
Adjustment Address 59, 6F
Specified Value "01", or "02" , "03"
Adjusting Method:
1) Set the POWER switch to ON.
2) Close the cassette compartment without inserting a cassette.
3) Set the HOLD switch of the adjustment remote commander to
ON (SERVICE position).
4) Select page: 0, address: 01, and set data: 01.
5) Select page: C, address: 6A, set data: 10, and press the PAUSE
button of the adjustment remote commander.
6) Select page: 3, address: 09, set data: 00, and press the PAUSE
button.
7) Select page: 3, address: 01, set data: 1A, and press the PAUSE
button. (to start up automatic "T reel FG Duty Adjustments".)
8) Select page: 3, address: 02, and check that the data is changed
from "17" to "00".
9) Set the HOLD switch of the adjustment remote commander to
OFF, and wait more than 2 seconds. (so that the adjustment
data is automatically written in page: C, address: 59 and 6F).
10) Set the HOLD switch to ON.
11) Check that the data of page: 3, address: 04 and that of page: C,
address: 6F are the same.
12) Select page: C, address: 6F. If the data is "01", or "02", "03", it
means that the automatic T reel FG duty adjustment has ended
normally.
13) Select page: C, address: 6A, set data: 00, and press the PAUSE
button of the adjustment remote commander.
14) Select page: 0, address: 01, and set data: 00.
15) Turn OFF the power supply.

2. Switching Position Adjustment (RJ-77 Board)

Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting Method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 0E, and press the PAUSE
button of the adjustment remote commander.
3) Select page: 3, address: 02, and check that the data is changed
from "0E" to "00".
4) Select page: 3, address: 03, and check that the data is "00".
5) Set the HOLD switch of the adjustment remote commander to
OFF, and wait more than 2 seconds (so that the adjustment
data is automatically written in page: C, address: 4C to 4F).
6) Set the HOLD switch of the adjustment remote commander to
ON.
7) Select page: 0, address: 01, and set data: 00.
8) Set to the stop mode.
9) Turn OFF the power supply.
5-12
VTR Playback
SW/OL reference tape (XH2-3)
Display data of page: 3, address: 03
Adjustment remote commander
C
4C, 4D, 4E, 4F
"00".