CHAPTER 13 TROUBLESHOOTING
13-344
COPYRIGHT © 1999 CANON INC. CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Code
Cause
· Side A sensor (PS2) is faulty.
· Side B sensor (PS3) is faulty.
· The C sensor (PS4) is faulty.
· The signal plate is faulty.
· The drum motor drive system is
subjected to an overload.
· The transfer drum is not locked
properly.
· The DC driver PCB is faulty.
· The CPU PCB is faulty.
· The side A sensor (PS2) is faulty.
· The side B sensor (PS3) is faulty.
· The C sensor (PS4) is faulty.
· The signal plate is faulty.
· The drum motor drive system is
subjected to an overload.
· The transfer drum is not locked
properly.
· The DC driver PCB is faulty.
· The CPU PCB is faulty.
Timing of detection
1108 The rising edge signal of the
signal plate D to be detected
by the C sensor is generated
0.3 sec earlier after the falling
edge signal of the signal plate
detected by the side A sensor
has been generated.
1201 The falling edge signal of the
signal plate to be detected by
the side B sensor is generated
0.3 sec later after the falling
edge signal of the signal plate
D detected by the C sensor
has been generated.
1202 The rising edge signal of the
signal plate to be detected by
the side B sensor is generated
0.3 sec later after the rising
edge signal of the signal plate
C detected by the C sensor has
been generated.
1203 The rising edge signal of the
signal plate C to be detected
by the C sensor is generated
0.3 sec later after the falling
edge signal of the signal plate
detected by the side by side B
sensor has been generated.
1204 The falling edge signal of the
signal plate C to be detected
by the C sensor is generated
0.3 sec later after the rising
edge signal of the signal plate
detected by the side B sensor
has been generated.
1205 The rising edge signal of the
signal plate to be detected by
the side A sensor is generated
0.3 sec later after the falling
edge signal of the signal plate
C detected by the C sensor has
been generated.
1206 The falling edge signal of the
signal plate to be detected by
the side A senor is generated
0.3 sec later after the rising
edge signal of the single plate
D detected by the C sensor
has been generated.
E071
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