Canon iR1020 Series, Service Manual

Page: 162 / 304

Chapter 10
10-8
10.3 Detection Jams
10.3.1 Outline
0013-1198
iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F / iR1024i / iR1024iF
This machine detects a jam using the sensors shown below. Document jam check timings are stored in the ROM on the image processor PCB to check whether a
jam has occurred according to presence/absence of the document at the relevant sensor position.
When a jam occurs, the host machine stores its code.
Jam codes can be checked by outputting a jam error log report in the service mode of the host machine.
F-10-11
T-10-4
T-10-5
SR2001: Document set sensor
SR2002: Document edge sensor
SR2003: Registration sensor
SR2004: Separation rear sensor
Code Name Sensor No. Description
0000 Unknown jam - Other errors
0007 Initial stationary SR2002, R2003, SR2004 Paper is detected in the transport path before the ADF starts initial operation.
0008 Document edge sensor delay SR2002 The document edge sensor does not detect paper when the paper has been fed by the
predetermined distance since reception of a pickup request.
0009 Document edge sensor
stationary SR2002 The trailing edge of paper is not detected when the paper has been fed by the
predetermined distance since detection of it by the docement edge sensor.
000a Paper absence (Pull out the
document.) SR2001 The document set sensor has been held off since start of pickup.
000c Delievery delay SR2002 In case the internal software signal "Delivery Sensor ON" set in the system cannot
be detected, when the paper feed request is received and the paper is fed the
prescribed distance, and the leading edge of paper is detected and paper is fed the
prescribed distance .
000d Delievery stationary SR2002 In case the internal software signal "Delivery Sensor OFF" set in the system cannot
be detected, when the leading edge of paper is detected by the document edge sensor
and fed the prescribed distance, and after the paper's trailing edge is detected.
0010 Pickup NG SR2003 The registration sensor has been held off since paper pickup started.
SR2003
SR2002
SR2004
SR2001