Toshiba e-STUDIO350 Service Handbook page 551

7) Blank copy
Defective area Step
Transfer charger 1
wire
High-voltage trans- 2
former (Transfer
charger / Developer
3
bias)
Developer unit 4
5
6
7
8
Drum 9
CCD, SLG, SYS, 10
LGC boards and
harnesses
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Check items
Is the transfer charger wire cut off?
Is the high-voltage transformer out-
put defective?
Are the connectors of the high-volt-
age harness securely connected? Is
the harness open circuited?
Is the developer unit installed prop-
erly?
Do the developer sleeve and mixers
rotate?
Is the developer material smoothly
transported?
Has the magnetic brush phase been
shifted?
Is the doctor blade positioned prop-
erly?
Is the drum rotating?
Are the connectors securely con-
nected? Check if the harnesses
connecting the boards are open cir-
cuited.
5 - 115
05/11
Prescription
Replace the transfer charger wire.
Adjust the output, or replace the trans-
former.
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 devel-
oper material.
Adjust the developer polarity.
Adjust it using the doctor-sleeve jig.
Check if the drum shaft is inserted. Check
the drive system of the drum.
Connect the connectors securely. Replace
the harness.
e-STUDIO350/352/353/450/452/453
TROUBLESHOOTING
5