e-STUDIO550/650/810 TROUBLESHOOTING
5 - 114
JUNE 2002 © TOSHIBA TEC
Defective area
Step
Check Items
Prescription
High-voltage transformer
(transfer charger/
developer bias)
Bias supply connector
Developer unit
Drive system of developer
unit
Developer material
Drum
CCD, SLG, SYS, LGC
boards and harnesses
1
Is the output from the high-voltage
transformer normal?
2
Is the connector inserted properly?
3
Is the developer unit installed properly?
4
Do the developer sleeve and mixers ro-
tate?
5
Is the developer material smoothly trans-
ported?
6
Is the drum rotating?
7
Are the connectors securely connected?
Check if the harnesses connecting the
boards are open-circuited.
Adjust the output, or replace the transformer.
Insert the connector properly.
Check the installation state of the developer unit.
Check and fix the drive system of the developer
unit.
Remove the foreign object from the developer
material.
Check if the drum shaft is inserted.
Check the drive system of the drum.
Connect the connectors securely.
Replace the harness.
(7) Blank copy
Feeding direction
Содержание e-studio550
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