• Code: C1-1
• Description: Tray1 F/O#1 SNR on JAM. Timeout between Tray1 Feed Clutch ON and Tray1 Feed Sensor ON.
• Remedy: I/O Diagnostic Codes • [08-07] Tray1 Feed Sensor • [08-12] Tray1 Feed Clutch
  • Feed Roll or Retard Pad dirty, contaminated with paper dust, worn, or faulty • Tray1 Feed Sensor dirty and Sensor Actuator deformed or damaged • Paper damaged, not within specification, or not loaded correctly • Foreign matter, burrs, or paper in the paper path • Drive gear worn or damaged • Tray1 Feed Clutch faulty • Check that the following wires are connected securely with good electrical contact. If there is no problem, replace the Tray 1 Feed Sensor (PL 2.5) . – Wire between Tray 1 Feed Sensor J158-3 ( P/J158) and LVPS J501-6 ( P/J501) – Wire between Tray 1 Feed Sensor J158-2 and LVPS J501-7 – Wire between Tray 1 Feed Sensor J158-1 and LVPS J501-8 • Replace the Tray1 Feed Clutch (PL 2.2) and the AIOC PWB (PL 8.1) in that order.

• Code: C1-2
• Description: Tray1 Regi SNR on JAM. Timeout between Tray1 Feed Sensor ON and IOT Registration Sensor ON.
• Remedy: I/O Diagnostic Codes • [08-07] Tray1 Feed Sensor • [08-05] IOT Registration Sensor • [08-10] IOT Registration Clutch
  Check Items: • Take Away Roll 1 dirty, contaminated with paper dust, worn, or faulty • Tray1 Feed Sensor dirty and Sensor Actuator deformed or damaged • Paper damaged, not within specification, or not loaded correctly • Foreign matter, burrs, or paper in the paper path • Drive gear worn or damaged • IOT Registration Clutch faulty • Check that the following wires are connected securely with good electrical contact. If there is no problem, replace the Tray 1 Feed Sensor (PL 2.5) . – Wire between Tray 1 Feed Sensor J158-3 ( P/J158) and LVPS J501-6 ( P/J501) – Wire between Tray 1 Feed Sensor J158-2 and LVPS J501-7 – Wire between Tray 1 Feed Sensor J158-1 and LVPS J501-8 • Check that the following wires are connected securely with good electrical contact. If there is no problem, replace the IOT Registration Sensor (PL 2.9). - Wire between IOT Registration Sensor J156-3 ( P/J156) and LVPS J503-1 ( P/J503) - Wire between IOT Registration Sensor J156-2 and LVPS J503-2 - Wire between IOT Registration Sensor J156-1 and LVPS J503-3 • Replace the IOT Registration Clutch (PL 2.9) and the AIOC PWB (PL 8.1) in that order.

• Code: C2-1
• Description: STM F/O#2 SNR on JAM. Timeout between STM Feed Motor ON and STM Feed Sensor ON.
• Remedy: I/O Diagnostic Codes • [08-06] STM Feed Sensor • [08-11] STM Feed Clutch • [08-13] STM Feed Motor
  Check Items: • Tray2 Feed Roll or Tray2 Retard Roll dirty, contaminated with paper dust, worn, or faulty • STM Feed Sensor dirty and Sensor Actuator deformed or damaged • Paper damaged, not within specification, or not loaded correctly • Foreign matter, burrs, or paper in the paper path • Drive gear worn or damaged • STM Feed Clutch faulty • STM Feed Motor faulty • Check that the following wires are connected securely with good electrical contact. If there is no problem, replace the STM Feed Sensor (PL 11.5) . – - Wire between STM Feed Sensor J172-3 ( P/J172) and STM PWB J542-6 ( P/J542) – - Wire between STM Feed Sensor J172-2 and STM PWB J542-7 – - Wire between STM Feed Sensor J172-1 and STM PWB J542-8 • Replace the STM Feed Clutch (PL 11.6) , the STM Feed Motor (PL 11.6) , and the STM PWB (PL 11.5) in that order.

• Code: C2-2
• Description: Tray1 F/O#1 SNR on JAM from STM feed. Timeout between STM Feed Out Sensor ON and Tray 1 Feed Out Sensor ON.
• Remedy: I/O Diagnostic Codes • [08-06] STM Feed Sensor • [08-07] Tray1 Feed Sensor • [08-11] STM Feed Clutch • [08-13] STM Feed Motor
  Check Items: • Take Away Roll 2 dirty, contaminated with paper dust, worn, or faulty • STM Feed Sensor dirty and Sensor Actuator deformed or damaged • Paper damaged, not within specification, or not loaded correctly • Foreign matter, burrs, or paper in the paper path • Drive gear worn or damaged • STM Feed Clutch faulty • STM Feed Motor faulty • Check that the following wires are connected securely with good electrical contact. If there is no problem, replace the STM Feed Sensor (PL 11.5) . – Wire between STM Feed Sensor J172-3 ( P/J172) and STM PWB J542-6 ( P/J542) – Wire between STM Feed Sensor J172-2 and STM PWB J542-7 – Wire between STM Feed Sensor J172-1 and STM PWB J542-8 • Check that the following wires are connected securely with good electrical contact. If there is no problem, replace the Tray 1 Feed Sensor (PL 2.5) . – Wire between Tray 1 Feed Sensor J158-3 ( P/J158) and STM PWB J501-6 ( P/J501) – Wire between Tray 1 Feed Sensor J158-2 and STM PWB J501-7 – Wire between Tray 1 Feed Sensor J158-1 and STM PWB J501-8 • Replace the STM Feed Clutch (PL 11.6) , the STM Feed Motor (PL 11.6) , and the STM PWB (PL 11.5) in that order.

• Code: C2-3
• Description: STM Regi SNR on JAM. • When feeding paper from the STM, timeout between Tray1 Feed Sensor ON and IOT Registration Sensor ON.
• Remedy: I/O Diagnostic Codes • [08-05] IOT Registration Sensor • [08-10] IOT Registration Clutch
  Check Items: • Take Away Roll 1 dirty, contaminated with paper dust, worn, or faulty • IOT Registration Sensor dirty and Sensor Actuator deformed or damaged • Paper damaged, not within specification, or not loaded correctly • Foreign matter, burrs, or paper in the paper path • Drive gear worn or damaged • IOT Registration Clutch faulty • Check that the following wires are connected securely with good electrical contact. If there is no problem, replace the Tray 1 Feed Sensor (PL 2.5) . – Wire between Tray 1 Feed Sensor J158-3 ( P/J158) and LVPS J501-6 ( P/J502) – Wire between Tray 1 Feed Sensor J158-2 and LVPS J501-7 – Wire between Tray 1 Feed Sensor J158-1 and LVPS J501-8 • Check that the following wires are connected securely with good electrical contact. If there is no problem, replace the IOT Registration Sensor (PL 2.9). – Wire between Tray 1 Feed Sensor J156-3 ( P/J156) and LVPS J503-1 ( P/J503) – Wire between Tray 1 Feed Sensor J156-2 and LVPS J503-2 – Wire between Tray 1 Feed Sensor J156-1 and LVPS J503-3 • Replace the IOT Registration Clutch (PL 2.9) and the AIOC PWB (PL 8.1) in that order.

• Code: C5-0
• Description: No paper in the selected paper tray (Tray1). • No paper is detected in Tray1 when ATS function is disabled and Tray1 is selected during a copy job. • No paper is detected in Tray1 when Tray1 is selected during a print job (the paper size setting matches the one specified for the job).
• Remedy: I/O Diagnostic Codes [07-07] Tray1 No Paper Sensor
  Check Items: • Press the [Stop] button on the Control Panel. • Check the tray to see if it is empty; if it is, add paper specified by the job. • Tray1 No Paper Sensor dirty and Sensor Actuator deformed or damaged • Check that the following wires are connected securely with good electrical contact. If there is no problem, replace the Tray 1 No Paper Sensor (PL 2.7) . – Wire between Tray1 No Paper Sensor J157-3 ( P/J157) and LVPS J501-3 ( P/J501) – Wire between Tray1 No Paper Sensor J157-2 and LVPS J501-4 – Wire between Tray1 No Paper Sensor J157-1 and LVPS J501-5 • Replace the AIOC PWB (PL 8.1) .

• Code: C5-1
• Description: Tray1 Paper Size Mismatch. • Paper that is different from the one in the Tray Settings is detected when feeding. • Or, paper size setting in Tray1 is different from the paper size specification of the job when Tray1 is selected during a print job.
• Remedy: • Press the [Stop] button on the Control Panel. • Change the paper size of Tray 1 to the one specified by the job.

• Code: C6-0
• Description: No paper in the selected paper tray (Tray2). • No paper is detected in the STM when ATS function is disabled and STM is selected during a copy job. • No paper is detected in the STM when STM is selected during a print job (the paper size setting matches the one specified for the job).
• Remedy: I/O Diagnostic Codes [07-08] STM No Paper Sensor
  Check Items: • Press the [Stop] button on the Control Panel. • Load the correct paper into the STM. • STM No Paper Sensor dirty and Sensor Actuator deformed or damaged. • Check that the following wires are connected securely with good electrical contact. If there is no problem, replace the STM No Paper Sensor (PL 11.7) . – Wire between STM No Paper Sensor J171-3 ( P/J171) and STM PWB J542-3 ( P/J542) – Wire between STM No Paper Sensor J171-2 and STM PWB J542-4 – Wire between STM No Paper Sensor J171-1 and STM PWB J542-5 • Replace the STM PWB (PL 11.5) and the AIOC PWB (PL 8.1) .