Completely Blank Printout - Kyocera FS-3040MFP Service Manual

(1) Completely blank printout.

Print example
Defective
transfer
bias output.
Defective
developing
bias output.
No LSU
laser is out-
put.
Causes
Poor contact of engine PWB's
transfer bias output terminal
and machine's contact
(spring).
Machine bottom
Contact
(spring)
Engine PWB
Main charger
output terminal
Defective engine PWB.
Poor contact of engine PWB's
developing bias output termi-
nal and machine's contact
(spring).
Poor contact of machine's
developing bias output termi-
nal and developing unit's con-
tact.
Developing
bias output
terminal
Defective engine PWB.
Defective laser scanner unit.
Defective main PWB.
1-4-14
Check procedures/corrective measures
Check the installation position of the engine
PWB.
Refer to figure 1-4-4 below.
Contact
(spring)
Developing bias
output terminal
Figure 1-4-4
Replace the engine PWB (See page 1-5-30).
Check the installation position of the engine
PWB.
Refer to figure 1-4-4 above.
Check the installation of the developing unit.
Refer to figure 1-4-5 below.
Developing unit
Machine inside
Figure 1-4-5
Replace the engine PWB (See page 1-5-30).
Replace the laser scanner unit (See page 1-
5-16).
Replace the main PWB (See page 1-5-34).
Contact
(spring)
Contact
(spring)
Separation bias Transfer bias
output terminal output terminal
Contact
2LW/2LX