Canon GP405 - Page 645

COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
14-227
CHAPTER 14 TROUBLESHOOTING
• No code indication.
• Control panel keys
locked.
E100
E110
E191
Cause
The high-voltage (primary charging,
transfer charging, development) output
has a fault.
• The composite power supply PCB has
a fault.
• The DC controller PCB has a fault.
• The wiring has a fault (short circuit,
open circuit).
BD error has occurred.
• The laser unit has a fault.
• The BD PCB has a fault.
• The BD PCB has a fault.
• The laser driver PCB has a fault.
The laser scanner motor does not generate
clock pulses.
• The laser scanner motor (M3) has a
fault.
• The laser scanner driver PCB has a
fault.
• The DC controller PCB has a fault.
The serial communication between the
DC controller PCB and the composite
power supply PCB has a fault.
The scanner home position cannot be
detected.
• The scanner home position sensor
(PS1) has a fault.
• The scanner motor (M3) has a fault.
• The DC controller PCB has a fault.
The scanning lamp turns on abnormally.
• The scanning lamp has a fault.
• The intensity sensor has a fault.
• The CCD PCB has a fault.
• The composite power supply PCB has
a fault.
• The DC controller PCB has a fault.
The communication on the image
processor PCB has a fault.
• The communication between the DC-
CPU and the IP-CPU has an error.
Description
• The difference between the
output prescribed by the
high-voltage control signal
and the high-voltage output
actually generated is more
than a specific value.
• Either the primary charging
roller, transfer charging
roller, or developing bias
has an output error.
• The BD signal is not
generated during image
formation (2nd sheet pick-
up and later).
• The BD signal cycle has
deviated.
• The BD signal is not
generated within 2 sec after
the laser has turned on (at
time of 1st sheet pick-up).
• The laser scanner motor
does not reach a specific
speed after the laser scanner
motor drive signal has been
generated.
• The laser scanner motor
deviates from a specific
speed after it has reached it.
• The communication data is
not updated for 8 sec or more.
• The check sum of the
communication data varies
three times continuously.
• The scanner does not reach
the home position after it
has started to operate.
• The lamp intensity does not
exceed a specific value
within a specific time after
scanning operation starts
(following lamp activation).
• The lamp remains off for 10
sec when it should remain on.
A communication error is
detected between the DC-CPU
and the IP-CPU on the image
processor CPB.
E202
E220
E240
Detail
0001
0002
Code
E064