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e-STUDIO350/352/353/450/452/453
TROUBLESHOOTING
5 - 115
5
7) Blank copy
Defective area
Step
Check items
Prescription
Transfer charger
wire
1
Is the transfer charger wire cut off?
Replace the transfer charger wire.
High-voltage trans-
former (Transfer
charger / Developer
bias)
2
Is the high-voltage transformer out-
put defective?
Adjust the output, or replace the trans-
former.
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 condition
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 devel-
oper 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 if the drum shaft is inserted. Check
the drive system of the drum.
CCD, SLG, SYS,
LGC boards and
harnesses
10
Are the connectors securely con-
nected? Check if the harnesses
connecting the boards are open cir-
cuited.
Connect the connectors securely. Replace
the harness.
Feeding direction
05/11