3-20
Chapter 3 Troubleshooting
004-346 IOT BELT HOME FAILURE TOO LONG
Description
The IBT HOME SENSOR does not detect the
BELT HOME.
BSD on : CH9.17 CH9.19 CH9.31A
Procedure
Is there a label indicating the BELT HOME.
Y
N
Replace the IBT BELT.(PL5.3)
Check that the BELT HOME label is at the detection position of
the IBT HOME SENSOR. (Place paper at the detection
position.)
Run the
DC330
[004-100].
After execution, run DC330 [004-014].
Is H displayed?
Y
N
Is +5 VDC measured between the I/F PWB J533-A13 (+)
and GND (-)?
Y
N
Is +5 VDC measured between the I/F PWB J533-A9
(+) and J533-A12 (-)?
Y
N
If the voltage between the J533-A9 (+) and the
J533-A12 (-) is less than +5 VDC after closing
the FRONT door, replace the MCU MF
PWB.(PL13.1)
Check the wire between the IBT HOME SENSOR
J121 and the I/F PWB J533 for an open circuit and
poor contact. If no problems are found, replace the
IBT HOME SENSOR.(PL5.4)
Replace the MCU MF PWB.(PL13.1)
If the problem persists, replace the I/F PWB.(PL9.1)
Remove the IBT ASSY and run
DC330
[004-002].
Is the IBT MOTOR rotating?
Y
N
Is +24 VDC measured between the I/F PWB J551-3 (+)
and GND (-)?
Y
N
Check the +24 VDC circuit to the I/F PWB J551-3 by
referring to Chapter 4 Wiring Data.
(WN4.3.13 +24 VDC-1) (WN4.3.14 +24 VDC-2)
(WN4.3.15 +24 VDC-3) (WN4.3.16 +24 VDC-4)
Is +24 VDC measured between the IBT MOTOR J208-3
(+) and GND (-)?
Y
N
Check the wire between the IBT MOTOR J208-3 and
the I/F PWB J551-3 for an open circuit and poor
contact.
Check the wire between the IBT MOTOR J208 and the I/F
PWB J551 for an open circuit and poor contact.
Is an open circuit or poor contact found?
Y
N
Replace the IBT MOTOR.(PL1.1)
Repair the open circuit or poor contact.
Replace the MCU MF PWB. (PL13.1). If the problem persists,
replace the I/F PWB.(PL9.1)
004-347 BELT POSITION FAILURE
Description
IBT BELT EDGE adjustment failure
BSD on : CH9.19 CH9.31A
Procedure
Is the Actuator of the EDGE SENSOR touching the BELT?
Y
N
Check the installation status of the Actuator.
Turn On the power.
Run
DC330
[004-014].
Is +3 VDC to +1 VDC measured between the I/F PWB J533-
A11 (+) and GND (-)?
Y
N
Is +5 VDC measured between the I/F PWB J533-A9 (+)
and J533-A10 (-)?
Y
N
If the voltage between the J533-A9 (+) and the J533-
A10 (-) is less than +5 VDC after closing the FRONT
door, replace the MCU MF PWB.(PL13.1)
Is +3 VDC to +1 VDC measured between the I/F PWB
J533-A11 (+) and GND (-)?
Y
N
Is +3 VDC to +1 VDC measured between the I/F
PWB J533-A11 (+) and GND (-)?
Y
N
Check the wire between the I/F PWB J533 and
the IBT EDGE SENSOR J119 for an open
circuit and poor contact. If no problems are
found, replace the IBT EDGE SENSOR
(PL5.4). If the problem persists, replace the
MCU MF PWB.(PL13.1)
Check the wire between the I/F PWB J533-A11 and
the IBT EDGE SENSOR J119-2 for an open circuit or
poor contact.
Replace the IBT EDGE SENSOR.(PL5.4)
If this failure occurs more than three times, the
following NVM values have to be changed to 0.
DC131
[741-056]
:3 -> 0
When this NVM value is "3", 04-346 is displayed
when the power is turned Off.
Summary of Contents for Workio DP-C401
Page 4: ...This page is intentionally left blank ...
Page 5: ...Chapter 1 General ...
Page 22: ...1 16 Chapter 1 General 1 3 Type of Paper ...
Page 23: ...1 17 Chapter 1 General ...
Page 24: ...Chapter 2 Maintenance ...
Page 63: ...Chapter 3 Troubleshooting ...
Page 118: ...3 44 Chapter 3 Troubleshooting I F PWB PL9 1 MCU PWB PL13 1 ...
Page 445: ...Chapter 4 Parts List ...
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