36
You can change the direction dinamically by pressing DISC SKIP+,
DISC SKIP– button while adjustment mode.
You can stop rotation by pressing OPEN button.
Adjustment Location :
[ MAIN BOARD ] — Side B —
4-2. DISC SENSOR ADJUSTMENT
Connection: MAIN Board
Note: Remove all discs before adjustment.
Procedure:
1. Connect the oscilloscope to CN606 of the MAIN board as shown
in the connection diagram.
2. Remove the shield, set the DIP switches on the back panel as
shown below.
TP: Pin
T.P
SENS: Pin
SENS
GND: Pin
GND
1
2
3
oscilloscope
MAIN board
CN606
1
2
3
4
3. While pressing the OPEN button, DISC SKIP – button, and
DISC SKIP + button simultaneously, press the
U
button to
turn ON the power. (Keep on pressing three buttons untill
CHANGER LED is flashing.)
4. Press the DISC SKIP + . The disc table starts to rotate in the
clockwise direction.
5. Loosen the fixed screw C to move the holder (sensor R) and
secure it when the H portion of the T.P. waveform of the oscillo-
scope comes to the center of the H portion of the SENSOR wave-
form.
6. Press the DISC SKIP – button. The disc table starts to rotate in
the counterclockwise direction.
7. Check that the waveform on the oscilloscope is the same as that
adjusted in step 5. Repeat from step 4 if it is not.
8. Tighten the fixed screw C properly to secure the holder (sensor
R). Check the adjustment in step 4 to 7.
9. Apply screwlock and press the
U
button to turn OFF the power.
10. Remove the oscilloscope connected in step 1.
11. Set the DIP switch as below and attach the shield.
SCSI TERM
MODE
ID SELECT
4 2 1 4 2 1
DRIVE
CHANGER
ON
OFF
OFF
PARITY
Remove the shield.
SENSOR
T.P
More
than
10ms
Set to the center approximately.
Holder
Apply screwlock
Fixed screw C
CN606
IC603
SENS
GND
T.P
18
10
9
1
SCSI TERM
MODE
ID SELECT
4 2 1 4 2 1
DRIVE
CHANGER
ON
PARITY
Attach the shield.
