Akai AP-005

16
Condition
Explanation
Confirmation
Source
Countermeasure
10.
Stiff
motion
when
arm is
lowered
| Insufficient
oil
(lifter
Clean
and
oil
lifter
shaft.
or
catches while being
lowered.
shaft).
Dust.
2.
Does
not
1.
When
arm
is
brought
gently
to
Faulty
installation
of
Re-install
pick-up
plate
lead-out.
record
level
by
hand,
normal
pick-up
plate
assembly.
assembly.
lead-out operation begins.
When pick-up arm is brought
inward, PROXIMITY-SWITCH
and magnet are not horizontally
aligned and the gap is not 1 to
2 mm.
. When knob is brought to CUT
position, lead-out operation
begins normally.
Installation part of
magnet bent. Switch
position faulty.
Repair pick-up arm plate
assembly. Adjust
PROXIMITY-SWITCH
installation position.
PROXIMITY-SWITCH
SWITCH.
defective.
3. Does not stop
from continuous
play.
ie
. Check leaf-switch lead-through
with tester.
Faulty leaf-switch
contact point.
Replace PROXIMITY-
Replace leaf-switch.
Check with tester according to
schematic diagram.
Lead wire shorted. lee wiring.
. When the Cut Knob is slanted a
little foward the PLAY/CUT
side, continuous play is stopped.
4. Automatic
operation is not
smooth or stops
during operation.
5. Incorrect
lead-in position.
e
. With selector knob set to 30 and
. Check to see whether pick-up plate
. Check loose play of pick-up arm
Stiff motion when arm is lowering
or catches while lowering.
. When the low speed motor is
touched with your hand, it stops
immediately.
. Check to see whether pick-up arm
lock-nut is loose.
Check to see if cartridge is in
center of shell.
assembly is loose when moved by
hand.
bearing part.
Variation in shape of or
faulty installation of
plate spring. Insufficient
grease.
Replace or properly
install plate spring
Grease.
Insufficient oil
(Action-Plate
Assembly).
Insufficient torque.
Faulty installation
position.
Faulty installation
position.
Grease.
Overhaul lifter and grease.
Replace low speed motor.
Tighten holding lock-nut.
Properly install.
Tighten installation
holding screw.
mest
Defective pick-up arm.
Replace pick-up ‘arm.
using a 30 cm record, the lead-in
position is off by about 2 to 3 mm.
6. Incorrect
lead-out position.
. Pick-up arm lock-nut with which
the cartridge is installed is loose.
Check to see if cartridge is in
center of shell.
. When pick-up arm is brought
inward, PROXIMITY-SWITCH
and magnet are not horizontally
aligned, and the gap is not 2 to
2.5 mm.
Faulty adjustment.
Improper cartridge
installation.
Installation on part of
magnet bent. Faulty
switch installation
position.
. When selector knob is switched to
and from 17 and 25, PROXIMITY-
SWITCH does not move or
movement is poor.
Switch lever B is bent.
Tighten adjustment screw
at optimum adjusted
position.
Correct installation.
Repair pick-up arm plate
assembly.
Adjust PROXIMITY-
SWITCH installation
position.
Repair or replace switch
lever B.
Too much loose play or pick-up
arm bearing part.
Defective pick-up arm.
Replace pick-up arm.
Pick-up plate assembly installation
screws loose.
Faulty installation.
Tighten installation
holding screws.
. With selector knob set to 30 and
using a 30 cm record the lead-out
position is off by about 2 to 3mm.
Faulty adjustment.
Tighten adjustment screw
at optimum adjusted
position.