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1-2. Fusing Unit malfunction
l%e
printer considers
that
there
is a fusing malfunction when any of the following four conditions is detected.
fi
,’
1.
The
temperahue
of the upper fusing roller (as
measured
withtbethermistor)issuchthatthechangein
the thermistor voltage is
O.lV
or less over a period between
12 sec. to 30 sec. after
warm-up has
star&xi
(with
the
fusing
rollff
temperature being
16OT
or less).
2.
The
fusing roller temperature
does
not exceed l!WC for a 120 sec.
pericd
after warm-up has started.
3.
The
fusing roller temperature
becanes
less than
14UT
in
t.be
standby state.
4.
‘Ihe
fusing roller temperature
become
less than 1WC during a printing cycle.
5.
The fusing roller temperature remains more than
24OT
while the fusing temperature is being controlled.
13. Laser malfunction
T%e
laser output level is adjusted
befoxe
printing.
A laser fault is detected if the output level cannot
be
adjusted to the
specSed
value.
r
1-4. Polygon Motor malfunction
Tbeprinter~thattbereisapolyganmotarmalfunctiaawhenanyafthtfollowingthreeconditionsis
d!edected.
1.Thepolygcmmdarladrsignal&energizedwithin1O.Osec.alterthem~~beenenergized.
2.WhenthePolyganMotcaisON.thelodcsignalswitchesONthm
nxnainsOFFfarmorethan1sec.
3.
The SOS signal
is
not output during printing time.-
l-5.
Fan Motor malfunction
l.AfusingfanmotormaIfunctianis&~tedwhenthevoltageusedtodetectthefusingfanmotorcurrent
remfh
36OIZ30
mV
or less
(=
high
speed/ low speed) for a
cxmtinuous
0.5 sec. period.
2.
A power supply fan motor malfunction is detected when the voltage used to detect the
power
supply fan
motorcurrentremains
170/150
mV
or less
(=
high
speed/low
speed) for a
cc&mous
0.43 sec. period.
l-6. Main Motor malfunction
The
printer
considers that
there
is a
main
drive motor malfunction when any of the following two conditions is
detected.
1. The main drive motor lock signal
(co~tor
CNSA-1)
remains OFF for a continuous 1.0 sec. period.,
2.Themaindrivemotilccksignal(connec
tor
CN5A-1)
is OFF 1.0 sec. after the Main drive motor has
-Mergized
: Malfunction Resetting Procedure
After the malfunction has been cleared, turn the Power OFF for 3 sec. and then back ON.
F-2