Canon 1000 Service Manual page 746

7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
Code
• Transfer belt lifter sensor 1
(PS12), 2 (PS13)
• Pick-up motor (M10; faulty)
E074
• Transfer belt lifter clutch (CL17;
faulty)
• DC controller PCB (faulty)
• Transfer belt end sensor 1
(PS17; fault)
• Transfer belt end sensor 2
(PS18; fault)
• Transfer belt end sensor 1
(PS19; fault)
E075
• Transfer belt end sensor 2
(PS20; fault)
• Transfer belt swing motor (M13;
fault)
• DC controller PCB (fault)
• Transfer belt cleaning web (taken
up)
E076
• Web length sensor (faulty)
• DC controller PCB (faulty)
• Laser unit (faulty)
• Laser driver PCB (faulty)
E100
• Image processor PCB (faulty)
• Laser scanner drive system
(overload)
E110
• Laser scanner motor (M4; faulty)
• DC controller PCB (faulty)
7-310
COPYRIGHT © 2001 CANON INC.
Cause
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
Description
The transfer belt lifter sensor 1 (PS12) or 2
(PS13) does not go '1' (ON) within a specific
period of time after the transfer belt lifter clutch
(CL17) has turned ON.
0001 The transfer belt end sensor 1 (PS17)
does not turn off 600 sec after it has
detected the belt.
0002 The transfer belt end sensor 2 (PS18)
does not turn off 600 sec after it has
detected the belt.
0003 The transfer belt end sensor 3 (PS19)
detected the transfer belt.
0004 The transfer belt end sensor 4 (PS20)
detected the transfer belt.
A load is imposed on the web motor (M12)
because of a shortage of web, causing the
web rotation sensor (PS10) to detect a rotation
fault.
xx01 At the start of potential control, the BD
signal is not detected for 1 sec or
more.
xx02 The operation ON current used to
obtain optimum intensity is larger than
a specific value.
The rotation speed of the motor has deviated
from a specific value for 0.1 sec or more.