Canon CLC 1120 Service Manual page 870

Code
E071
COPYRIGHT © 1999 CANON INC.
Cause
· 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 locking
mechanism is faulty.
· The DC driver PCB is faulty.
· The CPU PCB is faulty.
· 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.
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Timing of detection
1101 The falling edge signal of the
signal plate to be detected by
the side B sensor is generated
0.3 sec earlier after the falling
edge signal of the signal plate
D detected by the C sensor
has been generated.
1102 The rising edge signal of the
signal plate to be detected by
the side B sensor is generated
0.3 sec earlier after the rising
edge signal of the signal plate
C detected by the C sensor has
been generated.
1103 The rising edge signal of the
signal plate C 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 B sensor
has been generated.
1104 The falling edge signal of the
signal plate C to be detected
by the C sensor is generated
0.3 sec earlier after the rising
edge signal of the signal plate
detected by the side B sensor
has been generated.
1105 The rising edge of the signal
plate to be detected by the
side A sensor is generated 0.3
sec earlier after the falling
edge signal of the signal plate
C detected by the C sensor has
been generated.
1106 The falling edge signal of the
signal plate to be detected by
the side A sensor is generated
0.3 sec earlier after the rising
edge signal of the signal plate
D detected by the C sensor
has been generated.
1107 The rising edge signal of the
signal plate D to be detected
by the C sensor is generated
0.3 sec earlier after the rising
edge of the signal l plate to be
detected by the side A sensor
has been generated.
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