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7. Blank copy
Defective area
Transfer charger wire
High-voltage transformer
(Transfer charger,
Developer bias)
Developer unit
Drum
MAIN, LDR, SNS boards,
CIS unit and harnesses
e-STUDIO181/211
TROUBLESHOOTING
Fig. 5-8
Step
Check items
1
Is the transfer charger wire cut off?
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.
5 - 28
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
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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Troubleshooting
