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ERROR CODE and TROUBLESHOOTING
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8.5.10 Blank print
Fig.8-18
Cause/Section Step Check item Measures
High-voltage
transformer
(1st/2nd
transfer roller
and developer
bias)
1 Is the high-voltage transformer output
defective?
Adjust the output and correct the
circuit, or replace the transformer.
2 Are the connector of the high-voltage
harness securely connected?
Is the harness open circuited?
Reconnect the harness securely.
Replace the high-voltage harness.
Developer unit 3 Is the developer unit installed
securely?
Check/correct the developer sleeve
coupling engaging.
4 Do the developer sleeve and mixer
rotate?
Check/correct the developer drive
system.
5 Is the developer unit filled up with the
developer material?
Check that the charger grid is not
dirty. (The developer material may be
reduced due to the carrier offset.)
6 Is the developer material properly
transported?
Remove foreign matter from the
developer material, if any.
7 Is there any magnetic brush phase
error?
Check the developer pole position.
8 Is the doctor sleeve gap incorrect? Adjust the gap with the doctor-sleeve
jig.
Drum 9 Is the drum rotating? Check that the drum shaft is inserted.
Check the drum drive system.
10 Is the drum grounded? Check the contact of the grounding
plate.
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