Cause/Detective section
Procedures
Result
CountermeasureItems to be checked
Feed tray operation is
defective
1
Does the elevator motor work when the
chain is removed from the feed tray?
Yes
Remove the cause of defective opera-
tion. Lean or catch?
2
Check with the HELP modes, H-06, H-
07. Are the elevator top limit sensor
and the elevator bottom limit switch
noraml?
No
• Follow the procedure (6) when the
elevator top limit sensor is defective.
• Follow the procedure (8) when the
elevator bottom limit sensor is defec-
tive.
Regulated power supply 3
Remove the drive PCB Unit CN2.
Measure the voltage between the regu-
lated power supply, CN1-1(+), CN1-2
(GND) with the tester. Is the voltage
+24 V?
No Replace the regulated power supply.
Elevator motor 4
Measure the voltage between the main
PCB Unit CN3-1 (GND) and CN3-2 (+)
with the tester at the timing of the ele-
vator motor operation. Is the voltage
+24V whether the elevator motor relay
connector is inserted or not?
Yes Replace the elevator.
Drive PCB Unit
5
Is the cause cleared by replacing the
drive PCB Unit?
Yes Finish
Elevator motor No Replace the elevator motor.
Main PCB Unit 6
Measure the voltage between the main
PCB Unit CN6-2 (+) and GND with the
tester. Is the voltage of the elevator top
limit sensor 0V at the time of pho-
topassing and 5V at the time of pho-
tointerrupting?
Yes Replace the main PCB Unit.
Main PCB Unit
7
Measure the voltage between the main
PCB Unit CN6-1 (+) and CN6-3 (GND)
with the tester. Is the voltage +5V?
Yes Replace the main PCB Unit.
Elevator top limit sensor Yes Replace the elevator top limit sensor.
Elevator bottom limit SW
8
Check the elevator bottom limit switch
with the tester. Is the switch turned on
or off normally?
No Replace the elevator bottom limit SW.
Main PCB Unit Yes Replace the main PCB Unit.
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