Malfunctions/Warning; List Of Malfunctions - Xerox MF Series Technical Document

3.

MALFUNCTIONS/WARNING

3-1.

List of Malfunctions

Malfunction Name
• The LOCK signal is not detected within a predetermined period of
• No new LOCK signal is detected for a 1-sec. period that begins 1.5
Polygon Motor
malfunction • The LOCK signal is not detected for a continuous 0.5-sec. period in
• The LOCK signal remains ON for a continuous 5-sec. period or
• The laser output exceeds the upper limit value.
• The laser output remains lower than the lower limit value.
Laser malfunction • The Start Scan signal (-S_SCAN) is not detected at all within a pre-
• The Start Scan signal (-S_SCAN) is turned OFF.
• The LOCK signal remains HIGH or LOW continuously for a prede-
Cooling Fan Motor
malfunction
• The voltage of the Thermistor remains low for a predetermined
• The temperature detected by the Thermistor remains lower than a
Warm-up failure • The temperature detected by the Thermistor does not increase for
• The Fusing Roller Heater Lamp remains ON for a 30-sec. period or
• The temperature detected by the Thermistor remains lower than the
Abnormally low
fusing temperature
• The temperature detected by the Thermistor remains higher than
Abnormally high
fusing temperature
• The Drum Charge Monitor Voltage (HVC_MON) signal falls outside
High voltage
failure • The Image Transfer Voltage Monitor signal (T_MON_V) and Image
time that begins 1 sec. after the Polygon Motor has been energized.
sec. after the first LOCK signal was detected.
a state in which the Polygon Motor runs stably.
more when the Polygon Motor remains deenergized.
determined period of time after the laser has been turned ON.
termined period of time while the Cooling Fan Motor remains ener-
gized.
period of time when a warm-up cycle is started.
reference value for a predetermined period of time for the period of
time that begins 5 sec. after, and ends 9 sec. after, the start of the
warm-up cycle (where the temperature detected by the Thermistor
is 80 °C or less).
a 3-sec. period or more for the period of time that begins after the
lapse of a predetermined period of time after the Fusing Roller
Heater Lamp has been turned ON and ends when the lamp is
turned OFF.
more (except during the period through which the Main Motor
remains energized).
set temperature continuously for a predetermined period of time
while the fusing temperature control is being provided. (The set
temperatures are as follows: 140 °C during a print mode at 600 dpi;
110 °C during a print mode at 1200 dpi; 70 °C during the standby
mode.)
235 °C for a predetermined period of time while the fusing tempera-
ture control is being provided.
a predetermined range at any time after the lapse of a predeter-
mined period of time after the Power Switch has been turned ON.
Transfer Current Monitor signal (T_MON_I) fall outside a corre-
sponding predetermined range.
T-9
Description