• Code: C0890
• Description: Fax control PCB CG FONT archive problem • When power is turned on, the compressed CG font in the Flash ROM on the fax control PCB was not successfully decompressed.
• Causes: Defective fax software. Defective fax control PCB.
• Remedy: Install the fax software to Ver. 2.xx or later. Replace the fax control PCB and check for correct operation.

• Code: C0900
• Description: Fax control PCB incompatibility detection problem • Fax software is not compatible with MMI software.
• Causes: Fax software version is earlier.
• Remedy: Check the version of fax software and upgrade it to a version that accommodates the machine.

• Code: C1010
• Description: Upper lift motor problem • When the upper drawer is inserted, the upper lift limit switch does not turn on within 6 s of the upper lift motor turning on and the upper lift limit switch does not turn on in a retry operation after turning off the upper lift motor for 200 ms. At this time, removal and insertion of the drawer is prompted. Even after removal and insertion of the drawer, the upper lift limit switch does not turn on. This problem occurs four times continuously. • During copying, the upper lift limit switch does not turn on within 200 ms of the upper lift motor turning on. At this time, removal and insertion of the drawer is prompted. Even after removal and insertion of the drawer, the upper lift limit switch does not turn on. This problem occurs four times continuously.
• Causes: Broken gears or couplings of the upper lift motor. Defective upper lift motor. Poor contact of the upper lift motor connector terminals. Defective upper lift limit switch. Poor contact of the upper lift limit switch connector terminals.
• Remedy: Replace the upper lift motor. Check for continuity across the coil. If none, replace the upper lift motor. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable. Check if YC13-B9 on the main PCB goes low when the upper lift limit switch is turned off. If not, replace the upper lift limit switch. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable.

• Code: C1020
• Description: Lower lift motor problem • When the lower drawer is inserted, the lower lift limit switch does not turn on within 6 s of the lower lift motor turning on and the lower lift limit
  switch does not turn on in a retry operation after turning off the lower lift motor for 200 ms. At this time, removal and insertion of the drawer is prompted. Even after removal and
  insertion of the drawer, the lower lift limit switch does not turn on. This problem occurs four times continuously. • During copying, the lower lift limit switch does not turn on within 200 ms of the lower lift motor turning on. At this time, removal and insertion of the drawer is prompted. Even after removal and insertion of the drawer, the lower lift limit switch does not turn on. This problem occurs four times continuously.
• Causes: Broken gears or couplings of the lower lift motor. Defective lower lift motor. Poor contact of the lower lift motor connector terminals. Defective lower lift limit switch. Poor contact of the lower lift limit switch connector terminals.
• Remedy: Replace the lower lift motor. Check for continuity across the coil. If none, replace the lower lift motor. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable. Check if YC13-B15 on the main PCB goes low when the lower lift limit switch is turned off. If not, replace the lower lift limit switch. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable.

• Code: C1030
• Description: Desk upper lift motor problem • When the upper drawer of the optional paper feeder is inserted, the desk upper lift limit switch does not turn on within 10 s of the desk upper lift motor turning on. At this time, removal and insertion of the drawer is prompted. Even after removal and insertion of the drawer, the upper lift limit switch does not turn on. This problem occurs four times continuously.
• Causes: Broken gears or couplings of the desk upper lift motor. Defective desk upper lift motor. Poor contact of the desk upper lift motor connector terminals. Defective desk upper lift limit switch. Poor contact of the desk upper lift limit switch connector terminals.
• Remedy: Replace the desk upper lift motor. Check for continuity across the coil. If none, replace the desk upper lift motor. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable. Check if CN1-5 on the desk main PCB goes low when the desk upper lift limit switch is turned off. If not, replace the desk upper lift limit switch. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable.

• Code: C1040
• Description: Desk lower lift motor problem • When the lower drawer of the optional paper feeder is inserted, the desk lower lift limit switch does not turn on within 10 s of the desk lower lift motor turning on. At this time, removal and insertion of the drawer is prompted. Even after removal and insertion of the drawer, the lower lift limit switch does not turn on. This problem occurs four times continuously.
• Causes: Broken gears of couplings of the desk lower lift motor. Defective desk lower lift motor. Poor contact of the desk lower lift motor connector terminals. Defective desk lower lift limit switch. Poor contact of the desk lower lift limit switch connector terminals.
• Remedy: Replace the desk lower lift motor. Check for continuity across the coil. If none, replace the desk lower lift motor. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable. Check if CN1-7 on the desk main PCB goes low when the desk lower lift limit switch is turned off. If not, replace the desk lower lift limit switch. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable.

• Code: C1100
• Description: Paper deck motor 1 problem • A motor over-current signal is detected continuously for 1 s or longer.
• Causes: Paper deck motor 1 does not rotate correctly (the motor is overloaded). Paper deck motor 1 connector makes poor contact.
• Remedy: Check the gears and remedy if necessary. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable.

• Code: C1110
• Description: Paper deck motor 2 problem • A motor over-current signal is detected continuously for 1 s or longer.
• Causes: Paper deck motor 2 does not rotate correctly (the motor is overloaded). Paper deck motor 2 connector makes poor contact.
• Remedy: Check the gears and remedy if necessary. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable.