7-6
2
Nothing happens when switches are pressed.
a. Defective switch or leaf switch on the Switch PCB.
b. Defective LED on the Switch PCB.
Problem
Check Item
Cause
Remedy
Repair
See
Section
a. Defective
switch or leaf
switch on the
Switch PCB
Is Switch PCB correctly
mounted?
Defective Switch PCB
mounting.
Correctly mount
Switch PCB.
Is switch harness assy
correctly connected?
Defective connection of
switch harness assy.
Correctly connect
switch harness assy.
Is the red lead connector
connected to CN2 on the
Switch PCB?
Leaf switch assy not
connected.
Correctly connect the
leaf switch assy.
Is the white lead connector
connected to CN3 on the
Switch PCB?
Leaf switch assy not
connected.
Correctly connect the
leaf switch assy.
Is the yellow lead connector
connected to CN4 on the
Switch PCB?
Leaf switch assy not
connected.
Correctly connect the
leaf switch assy.
3.3.3
3.3.4
3.3.5
When switch SW1 to SW4 is
pressed on the Switch PCB,
does the switch become
conducting?
Continuity problem in
switch SW1 to SW4.
Replace the Switch
PCB.
Replace
switch SW1
to SW4.
3.3.7
3.3.8
3.3.9
When the cover R/cover L
leaf switch is shorted, does
the connector on the leaf
switch assy become
conducting?
Defective leaf switch
assy.
Replace cover switch
assy.
Replace leaf switch
R assy.
Replace leaf switch L
assy.
When switch SW1 to SW4 is
pressed on the Switch PCB
or the leaf switch assy is
shorted, can the conductivity
be checked at CN1 on the
main CPU?
Defective switch
harness assy.
Replace switch
harness assy.
If conductivity can be
checked at CN1 on the main
CPU when switch SW1 to
SW4 is pressed or the leaf
switch assy is shorted, can
the conductivity be checked
at the main CPU ports?
Continuity problem in
Main PCB.
Replace Main PCB
assy.
3.3.3
Defective series
resistor on main CPU.
Replace Main PCB
assy.
Replace
series
resistor.
3.3.4
3.3.5
3.5.1
If conductivity can be
checked at the main CPU
ports when switch SW1 to
SW4 is pressed or the leaf
switch assy is shorted, is this
recognized by the main
CPU?
Defective main CPU#1.
Replace Main PCB
assy.
Replace
CPU#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 ...