OKI C844dnwl
Troubleshooting. Feed jam (Error 380) 2
Jam occurs immediately after the paper feed is started.
Check condition of the paper path
Check item | Check work | Actions to be taken at NG |
---|---|---|
Paper path of the front unit | Check if paper is jammed or not in the paper path. | Remove the jammed paper. |
Check condition of the mechanical parts
Check item | Check work | Actions to be taken at NG |
---|---|---|
Check the sensor levers of the paper IN1 sensor, that of the paper IN2 sensor and that of the WR sensor. | Check if shape and movement of the sensor levers have any abnormality or not. | Replace the sensor with the normal sensor lever. |
Motor driving check
Check item | Check work | Actions to be taken at NG |
---|---|---|
Paper Hopping motor | Confirm that the paper hopping motor works normally by using the [Motor & Clutch Test] of the self-diagnostic mode. | Replace the CU/ PU board, or replace the paper hopping motor. |
Paper Hopping motor driver | Remove the MOTERCL connector 1 of the CU/PU board and check the following at the connector side. Several MΩ between pin-5 – FG. Several MΩ between pin-6 – FG. Several MΩ between pin-7 – FG. Several MΩ between pin-8 – FG. |
Replace the CU/ PU board. |
Check the system connection
Check item | Check work | Actions to be taken at NG |
---|---|---|
Paper Hopping motor drive cable | Check the connection condition of the cable. Check if the connector is connected in the halfway only or not, and check if the connector is inserted in a slanted angle or not. Check also that cables are assembled without any abnormality. |
Replace the cable with the normal cable that normalizes the connection condition. |
Paper Hopping motor drive cable | Check that any cable is not pinched during assembling of the printer. Remove the MOTERCL connector 1 of the CU/PU board and check the following at the connector side. Short circuit between pin-5 – FG Short circuit between pin-6 – FG Short circuit between pin-7 – FG Short circuit between pin-8 – FG |
Replace the cable with the normal cable that normalizes the connection condition. |
Paper hopping motor | Remove the MOTERCL connector 1 of the CU/ PU board and check that approx. 3.4Ω can be measured between pin-5 -pin-6 and pin-7 -pin-8 respectively at the connector side. | Replace the paper feed motor. |