Description: Thermistor /1 (TH1) high temperature abnormality (hardware). TH1 detects the fusing abnormality detection 1.
Causes: Fusing temperature sensor /1 (TH1) Fusing heater lamp /1 (L1) Fusing heater lamp /2 (L2) Printer control board (PRCB) AC drive board (ACDB)
Remedy: 1 Check the fusing rollers /Up (L1 and L2), and clean/repair them if any abnormality. 10-N 2 Check the connector connection and the wiring between PRCB and TH1, and repair it if any abnormality. - 3 Check the connector connection and the wiring between ACDB and L1/L2, and repair it if any abnormality. - 4 Check TH to see the installed position or distance to the fusing roller /Up, and adjust/ replace it if any abnormality. 14-F 5 Replace TH1. - 6 Replace L1 and L2. - 7 Replace PRCB. - 8 Replace ACDB. - *After replacing the defective parts, be sure to set the DIPSW 3-1 to 0. If DIPSW3-1 is set to 0 before defective parts are fixed, it causes fire.
Code: C-3504
Description: Thermistor /3 (TH3) high temperature abnormality (hardware). TH3 detects the fusing abnormality detection 4.
Causes: Fusing temperature sensor /3 (TH3) Fusing heater lamp /3 (L3) Printer control board (PRCB) AC drive board (ACDB)
Remedy: 1 Check the fusing heating roller /Up (L3), and repair it if any abnormality. 10-N 2 Check the connector connection and the wiring between PRCB and TH1, and repair it if any abnormality. - 3 Check the connector connection and the wiring between ACDB and L3, and repair it if any abnormality. - 4 Check TH3 installed condition or the distance between TH3 and the fusing roller /Up, and adjust/replace it if any abnormality. 13-F 5 Replace TH3. - 6 Replace L3. - 7 Replace PRCB. - 8 Replace ACDB. - * After replacing the defective parts, be sure to set the DIPSW 3-1 to 0. DIPSW3-1 is set to 0 before defective parts are fixed, it causes fire.
Code: C-3801
Description: Thermistor /1 (TH1) low temperature abnormality (software). TH1 does not get to 50°C when a specified period of time has elapsed after the main power switch (SW1) turns ON for the fusing ON control.
Causes: Fusing temperature sensor /1 (TH1) Fusing heater lamp /1 (L1) Fusing heater lamp /2 (L2) Printer control board (PRCB) AC drive board (ACDB)
Remedy: 1 Check the fusing rollers /Up (L1 and L2), and clean/repair them if any abnormality. 10-N 2 Check the connector connection and the wiring between PRCB and TH1, and repair it if any abnormality. - 3 Check the connector connection and the wiring between ACDB and L1/L2, and repair it if any abnormality. - 4 Check TH to see the installed position or distance to the fusing roller /Up, and adjust/ replace it if any abnormality. 14-F 5 Replace TH1. - 6 Replace L1 and L2. - 7 Replace PRCB. - 8 Replace ACDB. - *After replacing the defective parts, be sure to set the DIPSW 3-1 to 0. If DIPSW3-1 is set to 0 before defective parts are fixed, it causes fire.
Code: C-3802
Description: Thermistor /3 (TH3) low temperature abnormality (software). TH1 does not get to 50°C when a specified period of time has elapsed after the main power switch (SW1) turns ON for the fusing ON control.
Causes: Fusing temperature sensor /3 (TH3) Fusing heater lamp /3 (L3) Printer control board (PRCB) AC drive board (ACDB)
Remedy: 1 Check the fusing heating roller /Up (L3), and repair it if any abnormality. 10-N 2 Check the connector connection and the wiring between PRCB and TH1, and repair it if any abnormality. - 3 Check the connector connection and the wiring between ACDB and L3, and repair it if any abnormality. - 4 Check TH3 installed condition or the distance between TH3 and the fusing roller /Up, and adjust/replace it if any abnormality. 13-F 5 Replace TH3. - 6 Replace L3. - 7 Replace PRCB. - 8 Replace ACDB. - * After replacing the defective parts, be sure to set the DIPSW 3-1 to 0. DIPSW3-1 is set to 0 before defective parts are fixed, it causes fire.
Code: C-3901
Description: Thermistor /1 (TH1) high temperature abnormality (long time/software). TH1 detects a temperature of 240°C or above 60 times in a period of 0.5second.
Causes: Fusing temperature sensor /1 (TH1) Fusing heater lamp /1 (L1) Fusing heater lamp /2 (L2) Printer control board (PRCB) AC drive board (ACDB)
Remedy: 1 Check the fusing rollers /Up (L1 and L2), and clean/repair them if any abnormality. 10-N 2 Check the connector connection and the wiring between PRCB and TH1, and repair it if any abnormality. - 3 Check the connector connection and the wiring between ACDB and L1/L2, and repair it if any abnormality. - 4 Check TH to see the installed position or distance to the fusing roller /Up, and adjust/ replace it if any abnormality. 14-F 5 Replace TH1. - 6 Replace L1 and L2. - 7 Replace PRCB. - 8 Replace ACDB. - *After replacing the defective parts, be sure to set the DIPSW 3-1 to 0. If DIPSW3-1 is set to 0 before defective parts are fixed, it causes fire.
Code: C-3902
Description: Thermistor /3 (TH3) high temperature abnormality (long time/software). TH3 detects a temperature of 220°C or above 30 times in a period of 1second.
Causes: Fusing temperature sensor /3 (TH3) Fusing heater lamp /3 (L3) Printer control board (PRCB) AC drive board (ACDB)
Remedy: 1 Check the fusing heating roller /Up (L3), and repair it if any abnormality. 10-N 2 Check the connector connection and the wiring between PRCB and TH1, and repair it if any abnormality. - 3 Check the connector connection and the wiring between ACDB and L3, and repair it if any abnormality. - 4 Check TH3 installed condition or the distance between TH3 and the fusing roller /Up, and adjust/replace it if any abnormality. 13-F 5 Replace TH3. - 6 Replace L3. - 7 Replace PRCB. - 8 Replace ACDB. - * After replacing the defective parts, be sure to set the DIPSW 3-1 to 0. DIPSW3-1 is set to 0 before defective parts are fixed, it causes fire.
Code: C-3903
Description: Thermistor /1 (TH1) low temperature abnormality 1 (hardware). TH1 detects the fusing abnormality detection signal 2.
Causes: Fusing temperature sensor /1 (TH1) Fusing heater lamp /1 (L1) Fusing heater lamp /2 (L2) Printer control board (PRCB) AC drive board (ACDB)
Remedy: 1 Check the fusing rollers /Up (L1 and L2), and clean/repair them if any abnormality. 10-N 2 Check the connector connection and the wiring between PRCB and TH1, and repair it if any abnormality. - 3 Check the connector connection and the wiring between ACDB and L1/L2, and repair it if any abnormality. - 4 Check TH to see the installed position or distance to the fusing roller /Up, and adjust/ replace it if any abnormality. 14-F 5 Replace TH1. - 6 Replace L1 and L2. - 7 Replace PRCB. - 8 Replace ACDB. - *After replacing the defective parts, be sure to set the DIPSW 3-1 to 0. If DIPSW3-1 is set to 0 before defective parts are fixed, it causes fire.
Code: C-3904
Description: Thermistor /3 (TH3) high temperature abnormality (hardware). TH3 detects the fusing abnormality detection 5.
Causes: Fusing temperature sensor /3 (TH3) Fusing heater lamp /3 (L3) Printer control board (PRCB) AC drive board (ACDB)
Remedy: 1 Check the fusing heating roller /Up (L3), and repair it if any abnormality. 10-N 2 Check the connector connection and the wiring between PRCB and TH1, and repair it if any abnormality. - 3 Check the connector connection and the wiring between ACDB and L3, and repair it if any abnormality. - 4 Check TH3 installed condition or the distance between TH3 and the fusing roller /Up, and adjust/replace it if any abnormality. 13-F 5 Replace TH3. - 6 Replace L3. - 7 Replace PRCB. - 8 Replace ACDB. - * After replacing the defective parts, be sure to set the DIPSW 3-1 to 0. DIPSW3-1 is set to 0 before defective parts are fixed, it causes fire.