Cause/Detective section
Procedures
Result
CountermeasureItems to be checked
Feed tray operation is
defective
1
Is the feed tray moved by hand
smoothly?
Remove the cause of defective operation.
Lean or catch?
3
2
Check with the HELP-006. Are the
elevator top limit sensor an d t he
elevator lower limit switch normal?
NO
NO
NO
Follow the procedure
7
when the
elevator top limit sensor is defective.
Follow the procedure
8
when the
elevator lower limit switch is defective.
24V power supply
4
Measure the voltage between CN2-5
and CN2-1 of the 24V power with the
tester. Is the voltage +24V?
NO
Measure the voltage between CN1-1 and
CN1-3 of the 24V power with the tester.
If it is AC100V, replace the 24V power.
Elevator motor
Fuse
5
At the timing when the elevator motor
operates, measure the voltage between
CN3-9 and CN3-10 of the drive PCB
with the tester. When inserting and
removing the relay connector of the
elevator motor, is +24V or -24V applied?
YES
Check the wiring harness. If there is
no problem, replace the elevator motor.
Replace the fuse.
Drive PCB Unit
6
Does replacing the drive PCB unit solve
the problem?
Is the fuse of the drive PCB normal?
YES Finish.
Main PCB Unit NO Replace the main PCB Unit.
Elevator top limit sensor
7
Turn ON/OFF the elevator top limit sensor
for measurement with the tester. Is the
sensor normal?
Replace the elevator top limit sensor.
Main PCB Unit
Check the wiring harness. If there is
no problem, replace the main PCB.
8
Elevator lower limit switch
Turn the elevator lower limit switch on and
off, and use a tester to measure voltage. 
Is voltage normal?
NO Replace the elevator lower limit switch.
Main PCB Unit
YES
NO
YES
Check the wiring harness. If there is
no problem, replace the main PCB.
Cause/Detective section
Procedures
Result
CountermeasureItems to be checked
1
Does drum rotate?
Proceed to procedure
5
.
NO
Drum
2
Drum interference with
the main unit
3
Does main motor rotate without drum? YES Eliminate interference.
Main motor encoder
sensor
5
Does the main motor encoder sensor status
when it is checked using HELP-005?
NO
24V power supply
Measure the voltage between CN2-6
and CN2-2 of the 24V power with the
tester. Is the voltage +24V?
NO
Measure the voltage between CN1-1 and
CN1-3 of the 24V power with the tester.
If it is AC100V, replace the 24V power.
Main motor PCB unit
6
7
Does replacing the main motor PCB unit
solve the problem?
Is there any problem in the above items?
NO
Finish.
Main PCB unit
Main motor
YES
YES
Replace the main PCB unit.
Replace the main motor.
Replace the main motor encoder sensor.
If the main motor encoder sensor does not operate
even after replacement, replace the main PCB.
4
Does main motor rotate without the
driving timing belt?
Drive system gear broken
or blocked with foreign
matter.
Check if drive system gear is broken
or blocked with foreign matter and
remove cause.
YES
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