Blank Print - Toshiba e-STUDIO 5540C Service Manual

8.5.10

Blank print

Cause/Section Step
High-voltage 1 Is the high-voltage transformer output
transformer defective?
(1st/2nd
2 Are the connector of the high-voltage
transfer roller
harness securely connected?
and developer
Is the harness open circuited?
bias)
Developer unit 3 Is the developer unit installed
securely?
4 Do the developer sleeve and mixer
rotate?
5 Is the developer unit filled up with the
developer material?
6 Is the developer material properly
transported?
7 Is there any magnetic brush phase
error?
8 Is the doctor sleeve gap incorrect?
Drum 9 Is the drum rotating?
10 Is the drum grounded?
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Fig.8-18
Check item
8 - 309
Measures
Adjust the output and correct the
circuit, or replace the transformer.
Reconnect the harness securely.
Replace the high-voltage harness.
Check/correct the developer sleeve
coupling engaging.
Check/correct the developer drive
system.
Check that the charger grid is not
dirty. (The developer material may be
reduced due to the carrier offset.)
Remove foreign matter from the
developer material, if any.
Check the developer pole position.
Adjust the gap with the doctor-sleeve
jig.
Check that the drum shaft is inserted.
Check the drum drive system.
Check the contact of the grounding
plate.
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
ERROR CODE and TROUBLESHOOTING
8