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ERROR CODE AND TROUBLESHOOTING
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MJ-1101/1107/MJ-1106/1108
[EA40] Cover open detection error
MJ-1032
[EA50] Stapling jam
Check item Measures
Cover • Close the front cover or the stationary tray if they are opened.
Front cover switch (SW1) • Sensor check
• Connector check
• Harness check
Stationary tray opening/closing
switch (SW2)
• Sensor check
• Connector check
• Harness check
Finisher controller board • Connector check(CN16)
• Board check
Parts to be replaced Remark
Cover locking bracket If it is broken.
Front cover switch (SW1)
Stationary tray opening/closing
switch (SW2)
Finisher controller board
Probable cause Checking and measures
Sub-path opening/closing
sensor (S12) abnormality
Measure the voltage on TP12 on the finisher control PC board
(FIN). Then check that the measured voltage is 1V or lower when
not shielded and within the range of 3.3V±5% when shielded. If the
voltage does not fall within the range mentioned, replace the
sensor.
Front cover switch (SW1)
abnormality
Measure the voltage on TP77 on the finisher control PC board
(FIN). Then check that the measured voltage is 1V or lower when
the switch is ON and within the range of 3.3V ± 5% when OFF. If the
voltage does not fall within the range mentioned, replace the switch.
Faulty cables and connectors
Check if the electrical continuity between the connector terminals is normal.
If electricity is not conducted, replace the connector. (Finisher control PC
board (FIN): CN10, CN13)
Finisher control PC board
(FIN) abnormality
If the error still occurs after replacing the switches, sensor and connector,
exchange the finisher control PC board (FIN).
Classification Error content
Paper jam in finisher section Stapling jam
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