Disc In Detect Sensor Adjustment5. Rotate the [DISC/CHARACTER] knob in the counterclock-
Be sure to perform this adjustment after sensor adjustment inwise direction and the disc table starts to rotate in the same
MECHANICAL ADJUSTMENT.direction. Check that the waveform at this time is the same as
that in step 4. If larger by a considerable extent, rotate the
Connection:[DISC/CHARACTER] knob in the clockwise direction and the
disc table starts to rotate in the same direction. Repeat from
MAIN boardoscilloscope
step 4.
CN506
6. Rotate RV501 of the MAIN board and adjust so that the H and
T.PT.P: Pin 1
L portions of the D.S waveform become the same.
GNDD.S: Pin 3
D.SGND: Pin 2
Waveform:
D.S
Adjust so that these widths
D.S
become the same.
Adjustment Location: MAIN board
P.TY Adjustment Location
� BD BOARD (Conductor Side) �
1. Connect the oscilloscope to Pins 1, 2, and 3 of CN506 of
the MAIN board.
2. Check that no discs are loaded in the unit.
3. With the power ON, while pressing the [GROUPE5] and
[EEEOPEN/CLOSE]¤ buttons, press the [+100] button. The disc
table starts to rotate in the clockwise direction.
4. Loosen the fixing screw, move the mounting board (SENSOR),
and secure the mounting board (SENSOR) at the point the H
TP
portion of the P.T waveform comes the center of the H portion
(RFO)
TP
of the D.S waveform.
(FE1)
TP
Fixing screwMounting board (SENSOR)(TE)
IC103IC101
TP
(VC)
� MAIN BOARD (Component Side) �
CN506
13
RV501
D.S
P.T
Should be at the center
20 |
ACEC
