Remedy: 1 Check the connection status between the Fan and the MCU. [FAN, PC] - [HARNESS, PAPER LOAD] - [BOARD ASSY., MAIN C585 MCU] (CN114) 2 Replace the [FAN, PC]. 3 Replace the [BOARD ASSY., MAIN C585 MCU].
Code: E154
Description: Toner fan error
Remedy: 1 Check the connection status between the Fan and the MCU. [FAN, DUST CHAMBER] - [HARNESS, MAIN] - [BOARD ASSY., MAIN C585 MCU] (CN107) 2 Replace the [FAN, DUST CHAMBER]. 3 Replace the [BOARD ASSY., MAIN C585 MCU].
Code: E155
Description: Fuser fan error
Remedy: 1 Check the connection status between the Fan and the MCU. [FAN, FU] - [BOARD ASSY., MAIN C585 MCU] (CN106) 2 Replace the [FAN, FU]. 3 Replace the [BOARD ASSY., MAIN C585 MCU].
Code: E156
Description: Power supply fan error
Remedy: 1 Check the connection status between the Fan and the MCU. [FAN, LPS] - [HARNESS, MAIN] - [BOARD ASSY., MAIN C585 MCU] (CN107) 2 Replace the [FAN, LPS]. 3 Replace the [BOARD ASSY., MAIN C585 MCU].
Code: E256
Description: Transfer Belt unit lever out-of-position
Remedy: 1 Check if the photoconductor lock lever is set to printing position. 2 Check the connection status between the sensor and the MCU. [TRANSFER UNIT, Assy., ASP] - [HARNESS, MAIN] - [BOARD ASSY., MAIN C585 MCU] (CN110) 3 Check the flag for detecting VSYNC (convex portion) on the extreme right of the Transfer Belt for any abnormality. 4 Replace the [TRANSFER UNIT, Assy., ASP]. 5 Check the connection status between the Motor and the MCU. [SERVOMOTOR, PC] - [HARNESS, MAIN] - [BOARD ASSY., MAIN C585 MCU] (CN105) 6 Replace the [SERVOMOTOR, PC].
Code: E998
Description: Engine communication error
Remedy: 1 Check the firmware version of both of the Engine and the Main controllers and update them as necessary. 2 Check the connection status between the MCU and the Main controller. [BOARD ASSY., MAINC585 MCU] (CN101, CN121) - [HARNESS, MAIN, SIGNAL] - [BOARD ASSY., MAIN, C585 MAIN] (CN201, CN252) 3 Replace the [BOARD ASSY., MAIN C585 MCU]. 4 Replace the [BOARD ASSY., MEMORY, C533 PROG (59571)]. 5 Replace the [BOARD ASSY., MAIN, C585 MAIN].