Diagnostic Information 2-23
4227-100
5
PE Sensor
TOF Sensor
PSet Sensor
Jam Sensor
The printer has four sensors in the paper path,
plus one which detects the position of the
paper select lever. Enter the service menu and
perform the sensor tests.
• PE Sensor - rounded flag, detects the
presence of paper at the platen.
• TOF Sensor - sharp flag, determines TOF
at paper load.
• PSet Sensor - paper set, detects
presence of paper in the tractors and
looks for end of forms.
• Jam Sensor - senses the holes in the
paper and detects paper jams by the lack
of paper movement.
When the PSet sensor detects EOF, it lets
printing continue to the bottom of the form.
When the PE sensor detects no paper, it stops
print within a few lines.
The jam sensor stops printing after about
50 mm of no signal change; for example, if 50
mm of pinfeed is removed from a sheet, the
sensor stops printing. Less than 50 mm will
probably be ignored. Therefore, the paper
motion must have stopped for the equivalent of
about 12 printed lines to cause a jam.
If either the PE or the PSet sensor detects no
paper during print, printing stops at the end of
the current page.
The Tractor 2 option also has PSet and Jam
sensors on the left tractor.
Enter the service menu and perform the sensor
tests.
Replace any failed or damaged sensors.
6
Paper Select
Sensor
Enter the service menu and perform the
Sensor Test 2 for “Lever”.
Move the paper select lever to test the sensor.
Replace any sensor if failed or damaged.
FRU / Symptom
Action
Summary of Contents for 4227-100
Page 10: ...x 4227 100 Korean Safety Information...
Page 101: ...Connector Locations 5 1 4227 100 5 Connector Locations...
Page 105: ...Connector Locations 5 5 4227 100 Component Location Illustrations...
Page 106: ...5 6 4227 100 Component Location Illustrations Continued...
Page 114: ...5 14 4227 100 Connector Block Diagram...
Page 119: ...Parts Catalog 7 2 Assembly 1 Covers and Operator Panel...
Page 121: ...Parts Catalog 7 4 Assembly 2 Paper Feed...
Page 123: ...Parts Catalog 7 6 Assembly 3 Carrier...
Page 125: ...Parts Catalog 7 8 Assembly 4 Base and Electronics...
Page 127: ...Parts Catalog 7 10 Assembly 5 ASF Side Frame Covers...
Page 129: ...Parts Catalog 7 12 Assembly 6 ASF Roller Support...
Page 131: ...Parts Catalog 7 14 Assembly 7 Tractor 2 Option...