Toshiba e-studio166 Service Handbook page 187

7) Blank copy
Defective area
Transfer charger wire
High-voltage transformer
(Transfer charger, Devel-
oper bias)
Developer unit
Drum
MAIN, LDR, SNS boards,
CIS unit and harnesses
© 2005 - 2009 TOSHIBA TEC CORPORATION All rights reserved
Fig. 5-7
Step Check items
1 Is the transfer charger wire cut off?
2 Is the high-voltage transformer out-
put defective?
3 Are the connectors of the high-volt-
age harness securely connected? Is
the harness open circuited?
4 Is the developer unit installed prop-
erly?
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 prop-
erly?
9 Is the drum rotating?
10 Are the connectors securely con-
nected?
Check if the harnesses connecting
the boards are open circuited.
5 - 27
Prescription
Replace the transfer charger wire.
Adjust the output, or replace the
transformer.
Reconnect the harness securely.
Replace the high-voltage harness.
Check and correct the engaging con-
dition 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.
e-STUDIO163/166/203/206
TROUBLESHOOTING
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