Service manual

Electrical Component Defects
SM 6-43 D127/D128
Trouble –
shooting
Sensor Connector Message Remarks
DF Guide Open
Sensor
DF CN04 Paper jam -
SN (None) -
DF Original Set
Sensor
DF CN04 Paper jam -
Sensor (None) Originals are not detected.
DF Registration
Sensor
DF CN03
Paper jam
-
SN
Originals are correctly
transported.
Inverter Sensor
DF CN03 Paper jam -
SN (None) -
Exit Sensor
DF CN04
Paper jam
-
SN -
Front Door Switch
CN114 Front door open -
SW Front door open
Right Door Switch
CN114 Right door open -
SW Right door open -
CNxxx: The connector on the BICU board.
DF CNxxx: The connector on the DF connection board.
SN: The connector on the sensor.
SW: The connector on the switch.
PCU: The connector on the PCU.