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ERROR CODE and TROUBLESHOOTING
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[EF27] Hole Punch Unit paper edge detection order abnormality-1
[EF28] Hole Punch Unit paper edge detection order abnormality-2
Check item Measures
Finisher • Is there any paper remaining on the paper transport path?
Is it staying at the position shown below?
• Figure out the cause of the paper stopping (e.g. folding)
and correct it. Then remove the paper.
• Remove paper dust or punches on the paper position
sensor (S6-1, S6-2).
Paper position sensor (S6-1/S6-2) • Sensor check
• Connector check
• Harness check
Punch controller board • Connector check (CN19)
• Board check
Replace parts Remarks
Paper position sensor (S6-1/S6-2)
Punch controller board
Classification Error item
Finisher jam (Saddle section)
Check item Measures
Finisher • Is there any paper remaining in the paper transport path in
the equipment or the Finisher?
Skew sensor (S7-1/S7-2) • Sensor check
• Connector check
• Harness check
Punch controller board • Connector check
• Board check
Replace parts Remarks
Skew sensor (S7-1/S7-2)
Punch controller board
Skew sensor
(S7-1, S7-2)
Skew sensor
(S7-1, S7-2)
Paper position sensor
(S6-1, S6-2)
Paper
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