7-12
6
Abnormal
trimming
a. Defective trimming (TR-I) switch.
b. Defective control (SG) motor.
c. Defective trimming (TR-G) switch.
d. Defective
T-cutter.
Problem Check
Item
Cause Remedy
Repair
See
Section
Is document correctly
inserted?
Document inserted
incorrectly.
Correctly insert the
document.
−−−
Incorrectly installed
trimming switch.
Correctly install the
trimming switch.
Incorrectly installed
T-sensor lever.
Correctly install the
T-sensor lever.
Does the T-sensor lever
press the trimming switch
(leaf switch TRI assy) when
a document is inserted?
Is the leaf switch open when
no document is inserted?
Defective T-sensor
lever.
Replace the T-cutter
assy.
3.3.1
3.3.3
3.3.4
3.3.5
3.4
3.15
Is the black lead connector
connected to CN2 on the
Main PCB?
Leaf switch assy not
connected.
Correctly connect
the leaf switch assy.
3.3.3
3.3.4
3.3.5
Conductivity problem
in Main PCB.
Replace Main PCB
assy.
Is main CPU port P93 (Pin
12) at High level when
trimming switch TR-I is
open and SW3 and SW4 on
the Switch PCB are not
pressed?
Defective pull-up
resistor R51.
Replace Main PCB
assy.
Replace R51.
3.3.3
3.3.4
3.3.5
3.4.2
3.5.1
When trimming switch TRI
is shorted, is CN2 on the
Main PCB shorted?
Defective trimming-
switch TRI assy.
Replace trimming-
switch TRI assy.
3.3.1
3.3.3
3.3.4
3.3.5
3.4
3.15
Conductivity problem
in Main PCB.
Replace Main PCB
assy.
Is main CPU port P93 (Pin
12) at Low level when CN2
on the Main PCB is
shorted?
Defective series
resistor R33.
Replace Main PCB
assy.
Replace R33.
a. Defective
trimming (TR-I)
switch
When Main CPU port P93
(Pin 12) 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 ...