Blank Print - Toshiba e-STUDIO2330C Service Manual

26.5.9

Blank print

Cause/Section Step
High-voltage 1
transformer
(1st/2nd transfer
2
roller and
developer bias)
Developer unit 3
4
5
6
7
8
Drum 9
10
Transfer unit 11
12
13
Switching power 14
supply
Harnesses for 15
SLG, SYS, LGC
and LDR boards
e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C
ERROR CODE AND TROUBLESHOOTING
Fig. 26-8
Check items
Is the high-voltage transformer output
defective?
Are the connector of the high-voltage
harness securely connected?
Is the harness open circuited?
Is the developer unit installed securely?
Do the developer sleeve and mixer
rotate?
Is the developer unit filled up with the
developer material?
Is the developer material properly
transported?
Is there any magnetic brush phase error?
Is the doctor sleeve gap incorrect?
Is the drum rotating?
Is the drum grounded?
Is the transfer belt in proper contact with
the drum?
Is the transport of the transfer belt
normal?
Is the 2nd transfer roller contacted and
released properly?
Is the power supply output (5.1VD)
normal?
Are the connectors securely connected?
Is any harness between the boards open
circuited?
26 - 134
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.
Check if the contact releasing lever is at
releasing position. Check the installation
of the transfer belt.
Check the installation of the transfer belt
or transport mechanism.
Check the connection of the connector of
2nd transfer roller contact clutch and open
circuit of harness.
Replace the switching power supply.
Reconnect the connectors securely.
Replace the harness.
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