7-14
7
Abnormal X-cutter operation.
a. Defective X-cutter position switch.
b. Defective X-cutter DC motor.
c. Defective
X-cutter.
Problem Check
Item
Cause Remedy
Repair
See
Section
The X-cutter rotary cutter is
at the left or right end but
neither Pin 2 nor 3 is
continuous with Pin 1?
Alternatively, both Pin 2 and
3 are continuous with Pin 1?
Defective X-cutter
unit.
Replace the X-cutter
unit.
3.3.1
3.3.3
3.3.4
3.3.5
3.4
3.6.1
Conductivity between Pins
1, 2, and 3 of the X-cutter
harness assy?
Defective X-cutter
harness assy.
Replace the X-cutter
harness assy.
3.3.1
3.3.3
3.3.4
3.3.5
3.4
During X-cutter operation,
do main CPU#3 port P22
(Pin 5) and port P23 (Pin
80) switch to High level?
Defective pull-up
resistors R54 and
R59.
Replace Main PCB
assy.
Replace R54
and R59.
a. Defective X-
cutter position
switch
When main CPU port P22
(Pin 5) and port P23 (Pin
80) are 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
During normal output of the
Main CPU #3 output ports
P64 to P67 (Pins 34 to 37),
do the outputs between the
FET array Q10 Pin 5 and
Pin 7 alternate between 0 V
and 24 V?
Defective FET arrays
Q7, Q10.
Replace main PCB
assy.
Replace Q7,
Q10.
3.3.3
3.3.4
3.3.5
3.4.2
3.5.1
Conductivity between Pins 4
and 5 of the X-cutter
harness assy?
Defective X-cutter
harness assy.
Replace the X-cutter
harness assy.
3.3.1
3.3.3
3.3.4
3.3.5
3.4
b. Defective X-
cutter DC
motor
Normal resistance (approx.
30 ohms) between Pins 4
and 5 of the X-cutter
harness assy (DC motor
resistance value)?
Defective X-cutter
unit.
Replace the X-cutter
unit.
Does the rotary cutter rotate
when the DC motor rotates?
Defective X-cutter
unit.
Replace the X-cutter
unit.
Defective X-cutter
unit.
Replace the X-cutter
unit.
3.3.1
3.3.3
3.3.4
3.3.5
3.4
3.6.1
c. Defective X-
cutter
Cutting of only halfway?
Metal or other foreign
matter in the
laminated document.
Remove the foreign
matter and replace
the X-cutter unit.
3.3.1
3.3.3
3.3.4
3.3.5
3.4
3.6.1
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 ...