T-1 0

3. MALFUNCTIONS/WARNINGS

• The CPU performs a self-diagnosis on the condition of the unit, and if a malfunction is
detected, the warning appears alternately with the error code in the display.
<Procedure for cancelling a malfunction display>
• Cancel the malfunction display by turning the machine off and then on again.

3-1. List of Malfunctions

Malfunc-
tion Code Malfunction Name Description
008 Polygon mirror
motor error
• The LOCK signal is not detected within a predeter-
mined period of time that begins 1 second after the
Polygon Motor has been energized.
• No new LOCK signal is detected for a 1 second period
that begins 1.5 seconds after the first LOCK signal
was detected.
• The LOCK signal is not detected for a continuous 0.5
second period in a state in which the Polygon Motor
runs stably.
• The LOCK signal remains ON for a continuous 5 sec-
ond period or more when the Polygon Motor remains
deenergized.
010 Fuser fan motor
error
• The LOCK signal remains HIGH or LOW continuously
for a predetermined period of time while the Cooling
Fan Motor remains energized.
020 H. V. abnormal
• The Drum Charge Monitor Voltage (HVC_MON) signal
falls outside a predetermined range at any time after
the lapse of a predetermined period of time after the
Power Switch has been turned ON.
• The Image Transfer Voltage Monitor signal
(T_MON_V) and Image Transfer Current Monitor sig-
nal (T_MON_I) fall outside a corresponding predeter-
mined range.
040 Laser error
• The laser output exceeds the upper limit value.
• The laser output remains lower than the lower limit
value.
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