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VII.
SELF-DIAGNOSIS
The
copier
is equipped
with
a mechanism
in which
the
microprocessor
on the
DC controller
checks
the condition
of the copier
(by sensors).
Faults detected
by such checks,are
indicated
on the
copy counter
on the control
panel in the form
of error codes;
sea the table below
(if EOOO, indicates
j--'
EO and 00 alternately).
Code
Cause
Timing
.
Thermistor
(THl) has poor contact or
.
The fixing assembly roller temperature
broken line.
is 60°C or less 20 set after the power
.
Heater (Hl) has broken line.
is turned ON (thermistor has broken line
.
Thermoswitch
malfunctions.
and heater fails to gd ON).
.
Delivery unit paper detection PC8 is
.
The fixing assembly roller drops to
faulty.
140°C or less after it has reached
DC controller is faulty.
155°C (after warm-up;
thermistor
has
I!!
B'( ,7,7
.
Power supply/AC driver is faulty.
broken line and heater fails to go ON).
1
B
0
0
t
.
The heater remains ON (HTRD = 0) for
-1-a
28 sac or more before the fixing
assembly roller temperature reaches
155°C (before warm-up;
heater has
broken line).
.
The heater remains ON (HTRD = 0) for
18 set or more after the fixing
assembly roller temperature reaches
160°C (after warm-up;
heater has
broken line).
.
Thermistor is shorted.
.
The fixing assembly roller temperature
b=
b'(b7
t
.
Delivery unit paper detection PC6 is
has exceeded 230°C.
b, U
b-f
t
faulty.
.
DC controller is faulty.
.
Power supply/AC driver is faulty.
.
Main motor is faulty.
.
The number of drum clock pulses is
,-
b'(
07
.
DC controller is faulty.
below the specified value for about 2
b-b4
Ohmt
--
.
Power supply/AC driver is faulty.
set after the COPY START key is
.
Main motor clock sensor (PS3) is faulty.
turned ON.
.
Scanner motor is faulty (zoom lens
.
Lens home position (LHP = 1) is not
drive).
set after output of lens home position
.
Scanner motor driver is faulty.
set command.
:-
b-
-7
:g
.
Lens solenoid is faulty.
Lens home position is set (LHP = I)
1.a
.
Lens home position sensor is faulty.
after output of lens home position off
.
DC controller is faulty.
command.
.
Lens drive cable is slack or off pulley.
NOTE:
Error
codes
can
be cleared
by
turning
the
power
OFF. This,
however,
will
not
work
for
EOOO or EOOl;
otherwise,
the broken
thermis-
tor will heat
and damage
the fixing
assembly
roller. To clear EOOO or EOOl, short
CP102-1
and -2 on the DC controller or leave the copier
OFF for 20 minutes or longer.
3-34
COPINI6HT
01999 CNNON
INC.
CNNON
NP-1010 AN.0 OEC. 1999 PRINW IN JNPNN [IMPANNE
AU JAPONI
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