2MF/2MG
1-4-16
(1) Completely blank printout.
Print example Causes Check procedures/corrective measures
Defective
transfer
bias output.
Poor contact of engine PWB’s
transfer bias output terminal
and machine’s contact
(spring).
Check the installation position of the engine
PWB.
Refer to figure 1-4-5 below.
Figure 1-4-5
Defective engine PWB. Replace the engine PWB (See page 1-5-30).
Defective
developing
bias output.
Poor contact of engine PWB’s
developing bias output termi-
nal and machine’s contact
(spring).
Check the installation position of the engine
PWB.
Refer to figure 1-4-5 above.
Poor contact of machine’s
developing bias output termi-
nal and developing unit’s con-
tact.
Check the installation of the developing unit.
Refer to figure 1-4-6 below.
Figure 1-4-6
Defective engine PWB. Replace the engine PWB (See page 1-5-30).
No LSU
laser is out-
put.
Defective laser scanner unit. Replace the laser scanner unit (See page 1-
5-16).
Defective main PWB. Replace the main PWB (See page 1-5-34).
Engine PWB
Machine bottom
Contact
(spring)
Main charger
output terminal
Developing bias
output terminal
Separation bias
output terminal
Transfer bias
output terminal
Contact
(spring)
Contact
(spring)
Contact
(spring)
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