• Code: E012
• Description: Power coolant fan error
  When the Power Coolant Fan Motor (M4) does not operate at turning on the main switch.
• Causes: • Power Supply Cooling Fan Motor (M4) • Engine Board (PWB-A) • Power Supply Unit (PU)
• Remedy: 1 Check the operation of M4. M4_REM 2 Replace the PU. - - 3 Replace the PWB-A.

• Code: E014
• Description: Fuser cooling fan error
  When the Fuser Cooling Fan Motor (M5) does not operate at turning on the main switch.
• Causes: • Fuser Cooling Fan Motor (M5) • Engine Board (PWB-A) • Power Supply Unit (PU)
• Remedy: 1 Check the operation of M5. M5_REM 2 Replace the PU. - - 3 Replace the PWB-A.

• Code: E018
• Description: Laser error
  When the Polygon Motor does not operate, or the laser diode (LD) does not emit the laser beam.
• Causes: • Print Head Unit • Engine Board (PWB-A) • Power Supply Unit (PU)
• Remedy: 1 Replace the print head unit. - - 2 Replace the PU. - - 3 Replace the PWB-A.

• Code: E020
• Description: Secondary transfer roller pressing/separation error
  When pressing or separation of the Secondary Transfer Roller is impossible.
• Causes: • Transfer Roller Pressure Solenoid (SL2) • Transfer Roller Pressure Position Detection Sensor (PC7) • Engine Board (PWB-A)
• Remedy: 1 Check the operation of PC7. PC7_ON 2 Replace the pressing/separation mechanism parts of the Secondary Transfer Roller. - - 3 Check the operation of SL2. SL2_REM 4 Replace the PWB-A.

• Code: E021
• Description: Transfer belt cleaner clearance error
  When pressing or separation of the Transfer Belt Cleaner is impossible.
• Causes: • Cleaner Pressure Flapper Solenoid (SL4) • Belt Cleaner Position Detect Sensor (PC9) • Engine Board (PWB-A)
• Remedy: 1 Check the operation of PC9. PC9_ON 2 Replace the pressing/separation mechanism parts of the Belt Cleaner. - - 3 Check the operation of SL4. SL4_REM 4 Replace the PWB-A.

• Code: E022
• Description: Transfer belt rotation error
  When the transfer belt of the Intermediate Transfer Belt Unit does not operate.
• Causes:
• Remedy: 1 Replace the transfer belt unit.

• Code: E023
• Description: Developing rack rotation error
  When the Toner Cartridge Rack does not turn.
• Causes: • Rack motor (M2) • Rack Clutch (CL1) • Rack Black Position Detection Sensor (PC4) • Engine Board (PWB-A)
• Remedy: 1 Check the operation of PC4. PC4_ON 2 Check the operation of M2. CL1_REM 3 Check the operation of CL1. - 4 Replace the PWB-A.

• Code: E024
• Description: Fuser roller / warming up error
  When 80C is not reached in 100 seconds after start of warming up. When the fusing roller temperature has dropped and remained below 70C for 10 seconds during standby.
• Causes: • Fusing Roller Heater Lamp (H1) • Pressure Roller Heater Lamp (H2) • Thermostat (TS1) • Engine Board (PWB-A) • Power Supply Unit (PU)
• Remedy: 1 Check the continuity of H1 and H2. NO Replace the H1, H2. - 2 Check the continuity of TS1. NO Replace the TS1. - 3 Check to see if the resistance of TH1 is infinite. (Between CN18-1 and 2 on thermistor side) YES Clean TH1 or replace the Fuser Unit. HEATER NO Replace the PU. Replace the PWB-A.