• Code: 150 ... 153
• Display: SERVICE CALL 150:Error ~ 153:Error
• Description: ID unit fuse cannot be disconnected. (150 = Y, 151 = M, 152 = C, 153 = K)
• Remedy: Is ID unit setting proper? Does error reoccur? Is error recovered by replacing PRT board?
  Reset ID unit. Turn power ON again. After check connections of cable between PRT board and PU PCB, replace PRT PCB. Replace PU PCB.

• Code: 154
• Display: SERVICE CALL 154:Error
• Description: Belt unit fuse cannot be disconnected.
• Remedy: Is belt unit setting proper? Does error reoccur?
  Reset belt unit. Turn power ON again. Check cable connections and, replace PU PCB.

• 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 PCB.

• 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: 167
• Display: SERVICE CALL 167:Error
• Description: Thermistor Slope Error
• Remedy: Is an error message indicated? Is the error issued again?
  Turn on the power again. Leave the printer as is for 30 minutes, and turn on the power again.

• Code: 168
• Display: SERVICE CALL 168:Error
• Description: Compensation Thermistor Error
• Remedy: Is an error message indicated? Is the error issued again?
  Turn on the power again. Leave the printer as is for 30 minutes, and turn on the power again.

• Code: 169
• Display: SERVICE CALL 169:Error
• Description: Upper Side Thermistor Error
• Remedy: Is an error message indicated? Is the error issued again?
  Turn on the power again. Leave the printer as is for 30 minutes, and turn on the power again.

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