7-22
Problem Check
Item
Cause Remedy
Repair
See
Section
Is the red lead connector
connected to CN6 on the
main PCB?
Leaf switch assy not
connected.
Correctly connect
the leaf switch assy.
3.3.3
3.3.4
3.3.5
Is the cartridge leaf switch
CSIZE3 pressed when an
A3 cartridge is inserted?
Incorrectly installed
leaf switch assy.
Correctly install the
leaf switch assy.
3.3.1
3.3.3
3.3.4
3.3.5
3.4
3.17
Is the cartridge leaf switch
CSIZE3 not pressed when
an A3 cartridge is inserted?
Incorrectly inserted
cartridge?
Re-insert the
cartridge.
6.2
Is the cartridge leaf switch
CSIZE3 not pressed when
an A4 or A6 cartridge is
inserted?
Incorrectly installed
leaf switch assy.
Correctly install the
leaf switch assy.
3.3.1
3.3.3
3.3.4
3.3.5
3.4
3.17
Is main CPU port P14 (Pin
21) at High level when leaf
switch CSIZE3 is open?
Conductivity problem
in Main PCB.
Replace Main PCB
assy.
3.3.3
3.3.4
3.3.5
Defective
pull-up
resistor R49.
Replace Main PCB
assy.
Replace R49.
3.4.2
3.5.1
When leaf switch CSIZE3 is
shorted, is CN6 on the Main
PCB shorted?
Defective leaf switch
assy.
Replace leaf switch
C3 assy.
3.3.1
3.3.3
3.3.4
3.3.5
3.4
3.17
Is main CPU port P14 (Pin
21) at Low level when CN6
on the Main PCB is
shorted?
Conductivity problem
in Main PCB.
Replace Main PCB
assy.
Defective
series
resistor R45.
Replace Main PCB
assy.
Replace R45.
b. Defective
cartridge type
detector
(CSIZE3)
switch
When main CPU port P14
(Pin 21) is at Low level, is
this recognized by the main
CPU?
Defective main
CPU#3.
Replace Main PCB
assy.
Replace
CPU#3.
3.3.3
3.3.4
3.3.5
3.4.2
3.5.1
Summary of Contents for LX-1200
Page 1: ...SERVICE MANUAL MODEL LX 1200 LX 300 ...
Page 2: ...COOL LAMINATOR SERVICE MANUAL MODEL LX 1200 LX 300 ...
Page 5: ...Chapter 1 SPECIFICATIONS ...
Page 9: ...Chapter 2 MECHANISMS ...
Page 20: ...Chapter 3 DISASSEMBLY PROCEDURES ...
Page 58: ...Chapter 4 ASSEMBLY PROCEDURES ...
Page 105: ...Chapter 5 ELECTRONIC CONTROLLERS ...
Page 127: ...Chapter 6 MAINTENANCE ...
Page 149: ...Chapter 7 TROUBLESHOOTING ...