Blank Copy - Toshiba e-STUDIO205L Service Handbook

6.4.7

Blank copy

Defective area
Transfer roller unit
High-voltage transformer
(Transfer roller unit,
Developer bias)
Developer unit
Drum
CCD, SLG, SYS, LGC
boards and harnesses
e-STUDIO205L/255/305/355/455
ERROR CODE AND TROUBLESHOOTING
Fig. 6-7
Step Check items
1 Is the power supplying spring of the
transfer roller installed securely? (Is it
almost detached?)
2 Is the high-voltage transformer
output defective?
3 Are the connectors of the high-
voltage harness securely connected?
Is the harness open circuited?
4 Is the developer unit installed
properly?
5 Do the developer sleeve and mixers
rotate?
6 Is the developer material smoothly
transported?
7 Has the magnetic brush phase been
shifted?
8 Is the doctor blade positioned
properly?
9 Is the drum rotating?
10 Are the connectors securely
connected?
Check if the harnesses connecting
the boards are open circuited.
6 - 126
Prescription
Check the power supplying spring
and reinstall it.
Adjust the output, or replace the
transformer.
Reconnect the harness securely.
Replace the high-voltage harness.
Check and correct the engaging
condition of the developer unit gears.
Check and fix the drive system of the
developer unit.
Remove the foreign matter from the
developer material.
Adjust the developer polarity.
Adjust it using the doctor-sleeve jig.
Check the drive system of the drum.
Connect the connectors securely.
Replace the harness.
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