Canon GP405 Service Handbook page 164

CHAPTER 5 SELF DIAGNOSIS
B. DADF
Code
E400
E401
E402
E403
E404
E411
Caution:
1. If the self diagnosis mechanism has
turned on, turn on and off the copier's
power switch.
2. If the DADF is out of order, open it
and place an original on the
copyboard glass to make copies.
5-10
Cause
• The data communication with the
copier has a fault.
• The pick-up motor (M1) does not
rotate.
• The pick-up roller sensor (S5) has a
fault.
• The belt motor (M3) does not rotate.
• The belt motor clock sensor (S10)has a
fault.
• The feeder motor (M2) does not rotate.
• The feeder motor clock sensor (S9)
has a fault.
• The feeder motor (M5) does not rotate.
• The feeder motor clock sensor (S13)
has a fault.
• The original tray paper sensor (S1) has
a fault.
• The registration sensor (S3) has a
fault.
Description
• The communication is
monitored at all times, and
this error is identified when
the communication is
interrupted for 5 sec or
more.
• A flag is attached to the
shaft of the pick-up motor
(M1), and the rotation of the
motor is detected when the
flag blocks the pick-up
roller sensor (S5). This error
is identified when the sensor
does not turn on and off
twice or more within 1 sec.
• The number of belt motor
clock pulses within 200
msec is below a specific
value.
• The number of feeder motor
clock pulses within 200
msec is below a specific
value.
The number of feeder motor
clock pulses within 200 msec is
below a specific value.
The output for the sensor is 2.3
V or more in the absence of
paper.