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10–100
COPYRIGHT
©
1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
• The main motor lock detection signal
(MM_LKDT*) is detected for 1 sec
continuously while the main motor is being
driven.
• The waste toner feedscrew lock detection
signal (TRQMLDT) does not switch for
0.5 sec or more while the main motor is
being driven.
• The total copy counter is identified to have
an open circuit when the Start key is
pressed or when the counter is driven.
• The accessories counter is identified as
having an open circuit when the Start key
is pressed or the couter is being driven.
• The scanner does not return to home
position within a specific period of time
when it is being moved.
• The scanner home position sensor (PS1)
remains on during image exposure
(forward movement).
• The No. 4/No. 5 mirror unit does not turn
on or off the mirror home position sensor
(PS3) within a specific period of time
while the No. 4/No. 5 mirror unit is being
moved.
• The lens unit does not turn on or off the
lens home position sensor (PS2) within a
specific period of time when the lens unit is
being moved.
• The scanning lamp turns on during
standby.
• The scanning lamp turns off during
copying.
• The intervals of the zero-cross signals
exceed the allowed intervals for 50/60 Hz.
E010
Code
Cause Description
• The main motor (M1) is faulty.
• The DC controller PCB is faulty.
• The waste toner feedscrew is locked.
• The waste toner feedscrew lock sensor
(PS8) is faulty.
• The DC controller PCB is faulty.
• The total copy counter has an open
circuit.
• The DC controller PCB is faulty.
• The accessories counter has an open
circuit.
• The DC controller PCB is faulty.
• The scanner home position sensor (PS1)
is faulty.
• The scanner motor (M2) is faulty.
• The DC controller PCB is faulty.
• The mirror home position sensor (PS3) is
faulty.
• The mirror motor (M4) is faulty.
• The DC controller PCB is faulty.
• The lens home position sensor (PS2) is
faulty.
• The lens motor (M3) is faulty.
• The DC controller PCB is faulty.
• The lamp regulator PCB is faulty.
• The DC controller PCB is faulty.
• The power supply frequency is faulty.
• The power supply PCB is faulty.
E030
E013
E031
(E202)
No code
indication. Keys
are disabled.
(Note 2)
E208
E210
E261
E220