Code :

Code: C4B0
Description: Fuser unit counter abnormality
Remedy: 1. Check the LGC board (1) Check if the conductor pattern on the board is short circuited or open circuited. (2) Check if NVRAM is mounted. (3) Replace the LGC board. 2. Clear the status counter Change the current status counter value (08-400) "30 or more" or "4" to "0".

Code: C550
Description: RADF interface error: Communication error has occurred between the RADF and the scanner.
Remedy: (1) Check if the harness connecting the ADF board and SLG board is disconnected or open circuited. (2) Check if the conductor pattern on the ADF board is short circuited or open circuited. (3) Check if the conductor pattern on the SLG board is short circuited or open circuited. (4) Replace the ADF board. (5) Replace the SLG board.

Code: C560
Description: Communication error between Engine-CPU and PFC
Remedy: (1) Check if the conductor pattern around IC57 and IC58 on LGC board is not short- or opencircuited. (2) Replace the LGC board.

Code: C570
Description: Communication error between Engine-CPU and IPC board
Remedy: (1) Check if the LGC board and IPC board are connected properly. (2) Check if the conductor pattern on the IPC board is short circuited or open circuited. (3) Check if the conductor pattern on the LGC board is short circuited or open circuited. (4) Replace the IPC board. (5) Replace the LGC board.

Code: C580
Description: Communication error between IPC board and Finisher
Remedy: (1) Check if the specified finisher is attached. (2) Check if the harness connecting the IPC board and the finisher controller PC board is disconnected or open circuited. (3) Check if the conductor pattern on the IPC board is short circuited or open circuited. (4) Check if the conductor pattern on the finisher controller PC board is short circuited or open circuited. (5) Replace the IPC board. (6) Replace the finisher controller PC board.

Code: C590
Description: Communication error between Engine-CPU and Laser-CPU
Remedy: (1) Check if the harness between the LGC board and PLG board is not disconnected or opencircuited. (2) Check if the conductor pattern around IC13, IC58, IC125 and CN342 on the LGC board is not short circuited or open circuited. (3) Check if the conductor pattern around IC9, IC25, IC32 and CN204 on the PLG board is not shortor opencircuited. (4) Check if the connector CN104 on the SYS board and CN130, CN133 on the SYSIF board is disconnected. (5) Replace the LGC board. (6) Replace the PLG board. (7) Replace the SYSIF board

Code: C5A1
Description: NVRAM data abnormality (LGC board)
Remedy: (1) Check if the NVRAM has been installed properly. (2) Check if the conductor patterns on the NVRAM is short circuited or open circuited. (3) Replace the NVRAM. (4) Replace the LGC board.

Code: C730
Description: RADF EEPROM error: Data abnormality occurs during the EEPROM writing of the RADF is performed.
Remedy: 1. Check the IC-1, -2 and around on the RADF board to see if there is any burnout or shortcircuiting. 2. Replace the Replace the RADF board, and then perform the automatic adjustment for the original reading start sensor (05-356).