Oki LP-1040 Maintenance Manual page 206

(7) Jam code 3493/3494 problem analysis
When rewinding the paper, the lead edge of the paper reaches PS04 (paper jam 4 sensor) too slowly.
 Check for improper paper installation or a problem with the flange.
 Check for any remnants of paper particles in PS04.
 Check the cut at the front edge of the paper for:
- Folded end;
- Curved cut line; and
- Jagged edges
If there is a problem with the cut, perform (3) 3042 - 3047 problem analysis and check the
cutter's home position as well as its operation.
Select Sensor in Engine Maintenance mode.
Monitor PS04 (paper jam 4 sensor).
Does the display change between On and Off?
Yes
Select Actuator in Engine Maintenance mode, and operate FM01 and FM02 with On 2 (in paper
rewind direction).
Does FM01 and FM02 run with On 2 (paper rewind direction)?
Yes
 Check the paper path to PS04.
(8) Jam code 3501/3502 problem analysis
The lead edge of the paper reaches PS05 (registration sensor) too quickly.
 Check for improper paper installation or a problem with the flange.
 Check the cut at the front edge of the paper for:
- Folded end;
- Curved cut line; and
- Jagged edges
If there is a problem with the cut, perform (3) 3042 - 3047 problem analysis and check the
cutter's home position as well as its operation.
 Check for any dirt or foreign particles on the surface of paper feed rollers.
Is there a problem below with the installation of PS05?
- Improperly installed PS05
- Lever abnormality
Yes
Check the paper path to PS05.
5-32
No
◆ Check for short on the CBL-CUT1.
◆ Check the PS04 installation and its lever shape.
If there are no problems, replace the PS04.
No
Perform 2011-201C problem analysis. (See subsection 5.3.1 (3).)
No
If there are any problems, replace the PS05.