2PK/2PL/2PM/2PN
1-4-19
(2) All-black printout.
(3) Dropouts.
Print example Causes Check procedures/corrective measures
Defective main charger unit. Open the front cover and check that the drum unit and
developer unit are correctly seated (See page 1-5-28
and 1-5-27).
Investigate that the terminals between the main charger
unit and the drum unit are not in loose contact (See
page 1-5-28)
Poor contact of main charger ter-
minal (spring) and main charger
output terminal M on the high
voltage PWB.
Check the high voltage PWB visually and correct or
replace if necessary (See page 1-5-43).
Defective main charging output. Replace the high voltage PWB (See page 1-5-43).
Broken main charger wire. Replace the main charger unit (See page 1-5-29).
Defective control PWB. Replace the control PWB (See page 1-5-37).
Print
example
Causes Check procedures/corrective measures
Defective developer roller
(developer unit).
If the defects occur at regular intervals of 62.8 mm/2
1/2"
(See page 2-4-3), the problem may be the damaged
developer roller (in the developer unit). Replace the
developer unit (See page 1-5-27).
Defective drum unit. If the defects occur at regular intervals of 94 mm/3
11/16"
(See page 2-4-3), the problem may be the damaged
drum (in the drum unit). Replace the drum unit (See
page 1-5-28).
Defective fuser unit (heat roller
or press roller).
If the defects occur at regular intervals of 73.162 mm/
2
7/8", or 78.5 mm/3 1/16" (See page 2-4-3), the problem
may be the damaged heat roller or press roller (in the
fuser unit). Replace fuser unit (See page 1-5-32).
Defective paper specifications. Paper with rugged surface or dump tends to cause
dropouts. Replace paper with the one that satisfies the
paper specifications.
Defective transfer roller installa-
tion.
The transfer roller must be supported by the bushes at
the both ends. Clean the bush to remove oil and debris.
Replace the transfer roller if necessary (See page 1-5-
30).
Defective transfer bias output. Replace the high voltage PWB or control PWB (See
page 1-5-43 or 1-5-37).
ABC
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