Oki LP-1040 Maintenance Manual page 204

(5) Jam code 3403/3404 problem analysis
After the paper supply starts from the Roll x (x: roll number), PS04 detected paper earlier than
the prescribed time.
 Check for improper paper installation and 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 1 (in
paper feed direction).
Does FM01 and FM02 run with On 1 (paper feed direction)?
Yes
 Check the paper path to PS04.
 Check the pressure of the roller (pinch).
5-30
No
◆ Check for short and open status on the CBL-CUT1.
◆ Check the installation of PS04 and the lever configuration.
If there are no problems, replace PS04.
No
Perform 2011-201C problem analysis. (See subsection 5.3.1 (3).)