From the Australian Sharp Support Site.............
There are other bulletins on the C4 codes, but this is the repair hint regarding the jamming caused by the PTC unit.
Model:
MX2600N, MX3100N
Date: 21/10/2009 12:16:00 PMSymptom:
Intermittent POD2_N jams, when performing long runs of duplex copying or printing from all trays (excluding bypass).
Cause:
Noise or poor condition of PTC may cause POD2_N jams in duplex mode only.
During this jam condition, one sheet of paper will always concertina between the fuser and exit unit, as the exit/delivery unit stops rotation. The remaining sheets will be found in ADU (Right Exterior Door), Transfer section & just prior to CPFD1 sensor.
Also check PTC operation using duplex mode with Heavy 1. If an abnormal sound is heard and/or C4-00 trouble is indicated, replace the PTC unit. Note: Ensure to reset the PTC maintenance counter (SIM 24-04) after PTC replacement.
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