Panasonic UF-890 Service Manual page 129

4.3.10 Information Codes: 030, 031 (Document Jam)
START
Is the document path blocked?
No
Does the Tx Motor rotate?
Yes
Does the document feed into the
unit?
Yes
Does the output of CN7, pin2,
on the FCB PCB, vary between 0
and +5V when a document is set
and removed?
Yes
END
Yes
Remove the blockage.
No
1. Replace the Tx Motor.
2. Replace the FCB PCB.
No
Check all gears and rollers.
No
Check the connection of CN7
on the FCB PCB and CN31
on the SNS PCB.
No
Does the problem still occur?
Replace the SNS PCB.
129
Yes