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3. OPERATIONS AND TIMING
COPYRIGHT © 1996 CANON INC. CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
B. Self Diagnosis of the RDF-G1
C. Self Diagnosis of the ADF-F1
Caution:
1. Turn off the copier’s power switch once if the self diagnosis mechanism has turned on.
2. You may continue to make copies even when the RDF is out of order; open the RDF, and place
originals on the copyboard glass.
Code
E400
E401
E402
E403
E411
Main cause
• Data communication with copier
(faulty)
• Pick-up motor (M1; fails to
rotate)
• Pick-up roller sensor (S5; faulty)
• Belt motor (M3; fails to rotate)
• Belt motor clock sensor (S10;
faulty)
• Feeder motor (M2; fails to
rotate)
• Feeder motor clock sensor (S9;
faulty)
• Original tray paper sensor (S1;
faulty)
• Registration sensor (S3; faulty)
Description
• The communication is monitored at all
times. This error is identified when the
communication with the copier is disrupted
for 5 sec or more.
• A flag is installed on the shaft of the pick-
up motor (M1), and the rotation of M1 is
monitored in reference to the flag blocking
the pick-up roller sensor (S5). This error is
identified when S5 does not turn on and
off twice or more within 1 sec.
• The number of belt clock pulses for 200
ms is below a specific value.
• The number of feeding motor clock pulses
for 200 ms is below a specific value.
• The sensor output is 2.3 V or more in the
absence of paper.
Code
E422
Main cause
• Data communication with the
copier (faulty)
Description
• Communication with the copier has been
disrupted for 5 sec or more during stand-
by.
• Communication with the copier has been
disrupted for 0.5 sec or more during oper-
ation.
