• Code: 077-211
• Description: 2TM Type Error An unsupported 2TM was detected to be connected. NOTE: If this is already detected, it will be displayed on the UI Panel when a Job is being performed.
• Remedy: 1. Turn the power OFF and ON. 2. Turn OFF the power and check the following: • The DIP Switch setting on the 2TM PWB • The connection between the 2TM PWB J541 and the STM PWB J413C for open circuit, short circuit, and poor contact • The connection between the STM PWB J541C and the ESS/MCU PWB J413 for open circuit, short circuit, and poor contact If no problems are found, replace the following parts in sequence: • 2TM PWB (PL 11.6) • STM PWB (PL 10.6) • ESS/MCU PWB (PL 18.3)

• Code: 077-212
• Description: Tray Module Reset Fail The Tray Module was detected to be reset.
• Remedy: 1. Turn the power OFF and ON. 2. Check voltages of the following pins: • STM PWB J541C-5 (+5VDC) • STM PWB J541C-8 (+24VDC) 3. Turn OFF the power and check the connection between the ESS/MCU PWB J413 and the STM PWB J541C for open circuit, short circuit, and poor contact. 4. If no problem is found, replace the following parts in sequence: • STM PWB (PL 10.6) • ESS/MCU PWB (PL 18.3)

• Code: 077-300
• Description: Front Cover Open The Front Cover Switch was detected to be open.
• Remedy: 1. Check the Front Cover Switch for operation failure. • Front Cover Switch (Input Check [071-301]) (PL 19.1) 2. Check the Front Cover Switch for damage and mismatch. 3. If no problem is found, replace the following parts: • ESS/MCU PWB (PL 18.3)

• Code: 077-301
• Description: Left Hand Cover Open The Left Hand Cover Switch was detected to be open.
• Remedy: 1. Check the Left Hand Cover Switch for operation failure. • Left Hand Cover Interlock Switch (Input Check [071-300]) (PL 14.1) 2. Check the Left Hand Cover Switch for damage and mismatch. 3. If no problem is found, replace the following parts: • ESS/MCU PWB (PL 18.3)

• Code: 077-305
• Description: 2TM Cover Open The 2TM Left Cover Switch was detected to be open.
• Remedy: 1. Check the 2TM Left Cover Switch for operation failure. • 2TM Left Cover Switch (Input Check [072-301]) (PL 11.4) 2. Check the 2TM Left Cover Switch for damage and mismatch. 3. If no problem is found, replace the following parts: • 2TM PWB (PL 11.6)

• Code: 077-309
• Description: STM Cover Open The STM Left Cover Switch was detected to be open.
• Remedy: 1. Check the STM Left Cover Switch for operation failure. • STM Left Cover Switch (Input Check[072-300]) (PL 10.4) 2. Check the STM Left Cover Switch for damage and mismatch. 3. If no problem is found, replace the following parts: • STM PWB (PL 10.6)

• Code: 077-900, 077-901, 077-904
• Description: Regi Sensor/Fusing Unit Exit Sensor/ Feed Out Sensor 2 Static Jam BSD-ON: Paper was detected by the applicable sensor at Power ON, M/C Stop, or Interlock Close.
• Remedy: 1. Check the applicable sensor for remaining paper, the Actuator for return failure, contamination on sensor, and etc. 2. Check the applicable sensor for operation failure. • Regi Sensor (Input Check [071-105]) (PL 15.1) • Fusing Unit Exit Sensor (Input Check [071-106]) (PL 7.1) • Feed Out Sensor 2 (Input Check [072-106]) (PL 10.5) 3. If no problem is found, replace the following parts: • ESS/MCU PWB (Regi Sensor, Fusing Unit Exit Sensor) (PL 18.3) • STM PWB (Feed Out Sensor 2) (PL 10.6)

• Code: 077-905
• Description: Feed Out Sensor 3 Static Jam Feed Out Sensor 3 On was detected during Standby.
• Remedy: Check the following: • The Feed Out Sensor 3 for remaining paper, Actuator return failure, foreign substances, contamination on sensor, and etc. • Feed Out Sensor 3: Input Check [072-109] (PL 11.5) If no problems are found, replace the 2TM PWB (PL 11.6).