Code :

Code: 077-129
Description: Regi Sensor On Jam (Duplex Wait) During the paper stop at the invert wait position at Duplex print, the Regi Sensor did not turn ON within the specified time after the Duplex Clutch On.
Remedy: Check the following: • The Regi Sensor (Input Check [071-105]) for operation failure. (PL 15.1) • The Main Drive Motor (Output Check [042-001]) for operation failure. (PL 3.1) • The Invert Motor (Output Check [071-005] (Dup)) for operation failure. (PL 17.1) • The Dupex Clutch (Output Check [071-002]) for operation failure. (PL 14.4) • The Exit Roll, Duplex Roll 1, 2, and Pinch Roll for transportation failure due to contamination, wear, and deterioration. • The Drive Gear and Belt for wear and damage. • A paper transportation failure due to foreign substances on the paper path. • Usage of out of spec paper. If no problems are found, replace the ESS/MCU PWB. (PL 18.1)

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 18.1)

Code: 077-300, 077-301, 077-305
Description: Front Cover/Left Hand Cover/STM Cover Open The applicable Cover Switch was detected to be open.
Remedy: 1. Check the applicable Cover Switch for operation failure. • Front Cover Switch (Input Check[071-301]) (PL 19.1) • Front Cover Interlock Switch and L/H Cover Interlock Switch (Input Check[071-300]) (PL 19.1, PL 14.1) • STM Left Cover Switch (Input Check[072-300]) (PL 10.4) 2. Check the applicable Cover Switch for damage and mismatch. 3. If no problem is found, replace the following parts: • ESS/MCU PWB (Front Cover Open, L/H Cover Open) (PL 18.1) • STM PWB (STM Left Cover Open) (PL 10.6)

Code: 077-900, 077-901, 077-904
Description: Regi Sensor/Fusing Unit Exit Sensor/ Feed Out Sensor 2 Static Jam 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[072-104]) (PL 10.5) 3. If no problem is found, replace the following parts: • ESS/MCU PWB (Regi Sensor, Fusing Unit Exit Sensor) (PL 18.1) • STM PWB (Feed Out Sensor 2) (PL 10.6)

Code: 091-313
Description: CRUM ASIC Communication Fail Communication failure between the CRUM ASIC and the CPU was detected. The CRUM ASIC has malfunctioned.
Remedy: 1. Turn the power OFF and ON. NOTE: If this resolves the problem, it is highly probable that the ESS/MCU PWB had misdetected due to external noise abnormal or noise caused by electrical discharge in the machine. Check for any noise source around the machine and check for any abnormal electrical discharge, etc. 2. Turn OFF the power and check the following: • The Drum CRUM PWB and Drum Cartridge CRUM connection terminals in the Drum Cartridge for poor contact. • The connection between the Drum Cartridge J615 and the Drum CRUM PWB JA for open circuit, short circuit, and poor contact. • The connection between the ESS/MCU PWB J426 and the Drum Cartridge P615 for open circuit, short circuit, and poor contact. 3. If no problem is found, replace the following parts in sequence: • Drum Cartridge (PL 8.1) • ESS/MCU PWB (PL 18.1)

Code: 091-401, 091-402
Description: Drum Cartridge Quality Life Over/ Drum Cartridge Life Over [Drum Cartridge Quality Life Over] The image quality guarantee period for the Drum Cartridge has ended. (When Drum Hard Stop-less is enabled) [Drum Cartridge Life Over] When in Life Extension Mode, the Drum Cartridge was detected to be near the end of its lifespan.
Remedy: Replace the Drum Cartridge. (PL 8.1)

Code: 091-406, 091-424
Description: Drum Cartridge Normal Life Over/ Drum Cartridge Abnormal Life Over [Drum Cartridge Normal Life Over] The operation guarantee period for the Drum Cartridge has ended. (When Drum Hard Stop-less is enabled) [Drum Cartridge Abnormal Life Over] The Drum Cartridge is out of warranty and this could result in a malfunction of the machine. (When Drum Hard Stop-less is enabled)
Remedy: Replace the Drum Cartridge. (PL 8.1)

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