• Code: 155
• Display: Service call 155:Error
• Description: Fuser unit fuse cannot be disconnected.
• Remedy: Is fuser unit set properly? Does error reoccur?
  After cleaning for fuser connector, reset. Turn power ON again. Check cable connections and replace PU board (PRN)

• Code: 160 ... 163
• Display: Service call 160:Error ~ 163:Error
• Description: Error detected by toner sensor. (160 = Y, 161 = M, 162 = C, 163 = K) It does not occure in factory default setting.
• Remedy: Is toner cartridge setting? Is toner lock lever setting? Does error reoccur?
  Set toner cartridge. Turn a lock lever of toner to a fixed position. Replace toner sensor or assembly.

• Code: 170 ... 171
• Display: Service call 170:Error 171:Error
• Description: Short circuit in fuser thermistor or open detected.
• Remedy: Does error reoccur? Turn power ON again. Replace fuser unit.

• Code: 172, 173 ... 177
• Display: Service call 172:Error 173:Error 177:Error
• Description: Abnormal temperature detected by fuser thermistor (high-temp or low temp.)
• Remedy: Does error reoccur? Turn power ON again. Replace fuser unit.

• Code: 174
• Display: Service call 174:Error
• Description: Short circuit in back up roller thermistor detected (at high temperature).
• Remedy: Does error reoccur? Turn power ON again. Replace fuser unit.

• Code: 175
• Display: Service call 175:Error
• Description: Open of back up roller thermistor detected (at low temperature).
• Remedy: Does error reoccur? Turn power ON again. Replace fuser unit.

• Code: 176
• Display: Service call 176:Error
• Description: Abnormal (high) temperature of back up roller thermistor detected.
• Remedy: Does error reoccur? Turn power ON again. Replace fuser unit.

• Code: 181, 182
• Display: Service call 181:Error 182:Error
• Description: Option unit I/F error. (181 = Duplex Unit, 182 = Option Tray)
• Remedy: Does error reoccur? Turn power ON again. After checking connection parts of connector, replace option unit.