Code :

Code: F9 04
Description: Printer program error. Program data trouble in the option printer board.
Causes: Flash memory data is destroied.
Remedy: Replace or rewrite the Flash memory. Replace the printer PWB.

Code: F9 10
Description: PRT SCSI LSI abnormality. An error occurred in SCSI communication with the option printer board.
Causes: SCSI LSI abnormality ISU PWB abnormality SCSI connector improper connection
Remedy: Replace the printer PWB. Check the SCSI connector. Replace the ISU PWB.

Code: F9 90
Description: Printer communication trouble (PRT detection). Communication setup error/framing/parity/protocol error
Causes: Slave unit PWB connector improper connection Slave unit PWB – ICU PWB harness trouble Slave unit PWB mother board connector pin breakage
Remedy: Check the slave unit PWB and the ICU PWB connector connection. Check the copier earth.

Code: FC 00
Description: ASK/IrDA modulation LSI reset error. Though the RESET signal pulse is sent to the ASK/IrDA modulation LSI, the power signal is not turned ON.
Causes: 1) ICU main PWB defect 2) ASK/IrDA modulation LSI/Clock oscillator defect
Remedy: Perform the self diag with SIM 68-01. Replace the ICU main PWB.

Code: FC 01
Description: ASK/IrDA switch error. Though the ASK/IrDA switch command is sent to the ASK/IrDA modulation LSI, the AI signal is not changed.
Causes: 1) ICU main PWB defect 2) ASK/IrDA modulation LSI/Clock oscillator defect
Remedy: Perform the self diag with SIM 68-01. Replace the ICU main PWB.

Code: H2 00, H2 HL1
Description: Thermister open Fusing unit not installed. Thermister is open (more than 4.6-V input voltage is detected). Fusing unit not installed
Causes: Thermister defective Control PWB defective Improper connection of fusing connector AC power supply defective Fusing unit not installed
Remedy: Check harness and connector between thermister and control PWB. Clear the display of self-diagnostics with SIM14.

Code: H2 01, H2 HL2
Description: Thermister open Fusing unit not installed. Thermister is open (more than 4.6-V input voltage is detected). Fusing unit not installed
Causes: Thermister defective Control PWB defective Improper connection of fusing connector AC power supply defective Fusing unit not installed
Remedy: Check harness and connector between thermister and control PWB. Clear the display of self-diagnostics with SIM14.

Code: H3 00, H3 HL1
Description: Heat roller high temperature detection. The fusing temperature is over 241.5°C (less than 1.3-V input voltage is detected.)
Causes: Thermister defective Control PWB defective Improper connection of fusing unit connector AC power supply defective
Remedy: Check heater lamp operation with SIM5-2. If lamp blinks properly: Check thermister and its harness. Check thermister input circuit of control PWB. If lamp lights and stays lit: Check lamp control circuits of AC PWB and control PWB. Clear the trouble with SIM14.