Canon Laser Class 810, Service Manual

Page: 117 / 322

Chapter 5
5-9
5.3 Detection Jams
5.3.1 Overview
0017-2307
This machine detects a document jam using the sensors shown in the figure below. The check timing for document jam detection is memorized in the ROM on the
image processor PCB. Occurrence of a jam is judged according to whether document is present at the relevant sensor.
When a jam occurs, the host machine stores details of the jam with a jam code.
To check the jam code, enter the service mode of the host machine and output the jam error log report.
F-5-13
T-5-8
T-5-9
SR2001: Document set sensor
SR2002: Document edge sensor
SR2003: Registration sensor
SR2004: Delivery sensor
SR2005: Separation rear sensor
Code Name Sensor No. Description
0000 Unknown jam - Some other error
0007 Initial stationary SR2002, SR2003, SR2004,
SR2005 Paper has been detected in the transport path before ADF initialization.
0008 Document edge sensor
delay SR2002 The document edge sensor cannot detect the document even when the document has
been transported by the specified distance after reception of the pickup request.
0009 Document edge sensor
stationary SR2002 The trailing edge of document is not detected when the document has been
transported by the specified distance after detection of paper by the document edge
sensor.
000a No paper (Pull out the
document.) SR2001 The document set sensor has been held off since start of document feed.
000c Delivery delay jam SR2004 The delivery sensor cannot detect document when the document has been
transported by the specified distance since it was detected by the document edge
sensor (after it had been transported by the specified distance in response to the
pickup request).
000d Delivery stationary jam SR2004 The trailing edge of document is not detected when the document has been
transported by the specified distance after detection of paper by the delivery sensor.
0010 Pickup NG SR2003 The registration sensor has been held off since start of document feed.
SR2001
SR2003
SR2004 SR2002
SR2005