• Code: 123
• Display: Service call 123:Error
• Description: Abnormal environment humidty / Not connected humidity sensor.
• Remedy: Does error reoccur? Power OFF/ON Replace the operator panel board (PRP)

• Code: 124
• Display: Service call 124:Error
• Description: Abnormal environment temperature.
• Remedy: Does error reoccur? Power OFF/ON Replace the operator panel board (PRN)

• Code: 126
• Display: Service call 126:Error
• Description: Condensation in the printer was detected.
• Remedy: Condensation iss likely to occur in printers carried from the outside. Turn on the printer again after it is exposed to room temperature for two hours to half a day. Does the error reoccur?
  Turn on the printer again after it is left alone. Replace the operator panel board (PRP)

• Code: 127
• Display: Service call 127:Error
• Description: Error detected at the fuser unit cooling fan.
• Remedy: Is fan connector connected properly? Does error reoccur?
  Connect properly again. Replace fan motor Replace PU board (PRN)

• Code: 131 ... 134
• Display: Service call 131:Error ~ 134:Error
• Description: LED head fault detected. (131 = Y, 132 = M, 133 = C, 134 = K)
• Remedy: Is LED head properly set? Does error reoccur?
  Set properly for LED head unit. Turn power ON again. Replace LED head unit

• Code: 142
• Display: Service call 142:Error
• Description: Error detented at ID position of Up/ Down
• Remedy: Is ID unit set properly? Does error reoccur?
  Reset ID unit. Turn power ON again. Replace ID Up/Down sensor.

• 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 board, replace PRT board. Replace PU board (PRN)

• 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 board(PRN)