Toshiba e-STUDIO166 - Troubleshooting Blank Copy

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TROUBLESHOOTING
5 - 27
5
7) Blank copy
Fig. 5-7
Defective area Step Check items Prescription
Transfer charger wire 1 Is the transfer charger wire cut off? Replace the transfer charger wire.
High-voltage transformer
(Transfer charger, Devel-
oper bias)
2 Is the high-voltage transformer out-
put defective?
Adjust the output, or replace the
transformer.
3 Are the connectors of the high-volt-
age harness securely connected? Is
the harness open circuited?
Reconnect the harness securely.
Replace the high-voltage harness.
Developer unit 4 Is the developer unit installed prop-
erly?
Check and correct the engaging con-
dition of the developer unit gears.
5 Do the developer sleeve and mixers
rotate?
Check and fix the drive system of the
developer unit.
6 Is the developer material smoothly
transported?
Remove the foreign matter from the
developer material.
7 Has the magnetic brush phase been
shifted?
Adjust the developer polarity.
8 Is the doctor blade positioned prop-
erly?
Adjust it using the doctor-sleeve jig.
Drum 9 Is the drum rotating? Check the drive system of the drum.
MAIN, LDR, SNS boards,
CIS unit and harnesses
10 Are the connectors securely con-
nected?
Check if the harnesses connecting
the boards are open circuited.
Connect the connectors securely.
Replace the harness.
Feeding direction