Akai PRO-A200D Service Manual page 9

V. REPLACEMENT OF CARTRIDGE
AND TONE ARM ASSEMBLY
5-1. HOW TO CHANGE OR INSTALL THE
CARTRIDGE (Refer to Fig. 5-1)
Fig. 5-1
With the tone arm on the tone arm rest and clamped,
remove the screw on the side of the tone arm (directly
behind the cartridge) by using a screwdriver. After
removing the screw, grasp the cartridge firmly and pull
it forward, away from the tone arm, until it is free.
Replace the new cartridge by reversing the above
operation.
In order to enjoy the full capability of the Akai
AP-A100 please note the following when changing the
cartridge.
* Repace the cartridge with one which has the same
output voltage (2.5mV/1kHz, 5cm/sec peak).
. is the standard mark for plug-in connectors.
Connectors with this mark are compatible with each
other. The Akai AP-A100 is equipped with a high
quality VM cartridge, but any cartridge with the
mark can be used.
* Let's protect the records.
Do not touch the grooves when handling the record. —
Dirty grooves will produce distortions.
Store records standing in a well ventilated place,
relatively free of dust.
* Don't interrupt any movement.
Do not touch the tone arm or the platter and do not
turn off the power under the following conditions:
* During record playback
* When the tone arm is moving automatically.
* When the platter is turning.
* Be sure.
The ARM LIFTER is in the down (&) position before
attempting to clamp the tone arm to the tone arm rest.
SREVICE MANUAL
5-2. HOW TO REPLACE THE TONE ARM
ASSEMBLY (Refer to Fig. 5-2 to 5-3)
SCREW (A)
fool
O\e () REMovE
THIS PLATE
@ G) REMovE THIS
JUNCTION PCB
@ UNSOLDER
THESE WIRES
®
© THIS. NUT ©)
LOOSEN THIS SCREW(C),
AND REMOVE PU PLATE
Fig. 5-2
PU PLATE
1) Unscrew (A) and remove the shield plate.
2) Remove the wires from Tone Arm Assembly.
3) Unscrew (B) and remove the JUNC TION (2) PCB.
4) Loosen screw and remove the PU lever.
5) Unscrew the Nut (D) and Remove the Tone Arm
Assembly.
6) Install the New Tone Arm Assembly and do the
reverse way.
After replaced the Tone Arm, PU piate position Adjust-
ment is necessary as follow.
MICRO SW
screw ()
' PU PLATE
MICRO SW
COINCIDE THE CORNERS
Fig. 5-3
1) Lock the Tone Arm on the TONE ARM REST.
2) Loosen the Screw ©, and Confirm that the PU
PLATE is installed all the way into the Nut(D).
3) May loosen the screw © a little and turn PU PLATE
so that the corner of those PU PLATE and Micro SW
are coincide as shown Fig. 5-3.
4) Tighten screw (C).
5) Next excute an AUTO RETURN operation and con-
firm that the AUTO RETURN position is proper.
Do the fine adjustment in item 6-2 AUTO-RETURN
ADJUSTMENT if necessary.
6) Paint lock the screw © after the adjustment.