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Chapter 1 Troubleshooting
A
No
Yes
Checking the faint color
Is the one color faint?
Checked by [Test Print]-
[Gradation [ESS]] in
Diagnosis.
Checking the Toner
Dispenser Motor
No
Yes
Does the Toner Dispenser Motor function
normally?
Checked by [Digital Output] - [DO-48 (Y)/DO-4a
(M)/DO-4c (C)/Do-4d (K)] in [IOT Diagnosis].
In the test, close the INTERLOCK SWITCH.
Checking after
replacing the PHD
ASSY
Replace the PHD
ASSY.
No
Yes
Is the image printed
correctly?
END
Replace the
BTR ASSY.
Replace the
DISPENSER ASSY HI.
(RRP7.4)
Checking the DEVE ASSY
installation
Reseat the faint color
DEVE ASSY.
No
Yes
Is the image printed
correctly?
END
Checking after replacing
the DEVE ASSY.
Replace the faint color
DEVE ASSY.
No
Yes
Is the image printed
correctly?
END
Replace the BTR ASSY.