Technical data

6.2 0820–0824 CLEAR PAPER PATH
Figure 6–5 Bypass Sensor Diagram
DC Control
Board
+5 VDC
1
0710
+LED
Manual IN (H) +5 VDC
Bypass
Sensor
+5V RET
1
3
2
1
Developer
Interconnect
Board
1
3
2
1
P/J 71
3
2
1
P/J 71P/J 34
MLO-006655
6.2.3 0821 Upper Cassette Feed Failure
Note: Before performing the following FIP steps, make sure you have
completed all the steps in Section 6.2 at the beginning of this procedure.
Description: The following events cause this message to appear:
• Stalled paper holding down the registration sensor or a bad sensor.
If this error is constantly displayed or appears intermittently, at powerup
or without feeding, go to Section 6.2
• The result of a misfeed from the upper cassette. The sheet never reached
the registration sensor in time. The error occurs after a feed attempt.
Troubleshooting: If the paper never leaves the upper cassette or fails to
reach the upper turn rollers, do the following:
1. Make sure the cassette is properly loaded with the correct size and type of
paper.
2. Swap the upper cassette.
3. Look for paper path obstructions in the registration transport assembly
and the feed door.
Paper Path Jam FIPs 6–9