7-16
8
Document cannot be correctly inserted.
a. Problem with input-side rollers.
b. Defective PE sensor (P-END) switch.
Problem
Check Item
Cause
Remedy
Repair
See
Section
a. Problem with
input-side
rollers
Is document correctly
inserted against the paper
feed roller?
Document inserted
incorrectly.
Correctly insert the
document.
−−−
Is document correctly aligned
at right edge?
Document inserted
incorrectly.
Correctly insert the
document.
−−−
Is document inserted at an
slant?
Defective paper feed
roller extension springs.
Correctly install
extension springs.
3.3.1
3.3.3
3.3.4
3.3.5
3.4
Are the paper reference
in the body cover and
paper feed roller
perpendicular?
Re-adjust.
6.3.3
b. Defective PE
sensor
(P-END) switch
Does the sensor lever press
the PE sensor (P-END)
switch when a document is
inserted?
Incorrectly installed PE
sensor.
Correctly install the
PE sensor.
Is the PE sensor (P-END)
switch OFF when no
document is inserted?
Incorrectly installed
sensor crank.
Correctly install the
sensor crank.
Defective sensor crank. Replace the sensor
crank.
3.3.3
3.3.4
Is the white lead harness
assy connected to the PE
sensor connector?
Defective harness assy
connection.
Correctly connect the
harness assy.
3.3.5
Is the white lead connector
connected to CN7 on the
Main PCB?
Defective harness assy
connection.
Correctly connect the
harness assy.
Is main CPU port P45 (Pin
46) at High level when PE
sensor P-END is OFF?
Continuity problem in
Main PCB.
Replace Main PCB
assy.
3.3.3
3.3.4
3.3.5
Defective pull-up
resistor R32.
Replace Main PCB
assy.
Replace R32.
3.5.1
When paper sensor P-END
is ON, is CN7 on the Main
PCB shorted?
Defective PE sensor
assy.
Replace PE sensor
assy.
3.3.3
3.3.4
Defective harness
assy.
Replace the paper
sensor harness assy.
3.3.5
Is main CPU port P45 (Pin
46) at Low level when CN7
on the Main PCB is shorted?
Continuity problem in
Main PCB.
Replace Main PCB
assy.
3.3.3
Defective series
resistor R28.
Replace Main PCB
assy.
Replace R28.
3.3.4
3.3.5
When main CPU port P45
(Pin 46) is at Low level, is this
recognized by the main
CPU?
Defective main CPU#1.
Replace Main PCB
assy.
Replace
CPU#1.
3.5.1
Содержание LX-200
Страница 1: ...SERVICE MANUAL MODEL LX 200 LX 900 LX 910D REVISED EDITION May 2000 ...
Страница 4: ...Chapter 1 SPECIFICATIONS ...
Страница 8: ...Chapter 2 MECHANISMS ...
Страница 18: ...Chapter 3 DISASSEMBLY PROCEDURES ...
Страница 60: ...Chapter 4 REASSEMBLY PROCEDURES ...
Страница 107: ...Chapter 5 ELECTRONIC CONTROLLERS ...
Страница 128: ...Chapter 6 MAINTENANCE ...
Страница 137: ...6 8 Y Diversion Lever E two positions Ring Y cutter guide shaft Y diversion lever assy Fig 6 1 14 Y Diversion Lever ...
Страница 151: ...Chapter 7 TROUBLESHOOTING ...
Страница 176: ...APP 1 Appendix Main PCB Circuit Diagram ...
Страница 177: ...May 2000 86S004BE3 Printed in Japan ...