7-16
9
Document width cannot be detected correctly.
a. Defective Y-carriage (Y-CA) motor.
b. Defective sensor unit (YCA-F).
c. Defective Y-cutter arm.
Problem Check
Item
Cause Remedy
Repair
See
Section
Is the Y-CA motor harness
connected to connector C14
on the Main PCB?
Motor harness not
connected.
Correctly connect
the motor harness.
3.3.3
3.3.4
3.3.5
Are pulses output from
output ports P40 to P43 (Pin
41 to Pin 44) of the main
CPU#3?
Defective main
CPU#3.
Replace Main PCB
assy.
Replace
CPU#3.
When the output from
output ports P40 to P43 (Pin
41 to Pin 44) of the main
CPU#3 is High, is the output
from transistor array #5
Low?
Defective transistor
array #5.
Replace main PCB
assy.
Replace
QA5.
Defective transistor
#5.
Replace Main PCB
assy.
Replace Q5.
Defective transistor
Q16.
Replace Main PCB
assy.
Replace
Q16.
During High output (4V
min.) of the Main CPU#3
output port P54 (Pin 29), is
+24 V applied to the CDM
pin (Pin 5) of CN14?
Conductivity problem
in Main PCB.
Replace Main PCB
assy.
3.3.3
3.3.4
3.3.5
3.4.2
3.5.1
a. Defective Y-
carriage (Y-
CA) motor
Correct resistance value
(approx. 227 ohms)
between each phase of the
Y-CA motor and the COM
pin?
Defective Y-CA motor.
Replace the Y-CA
motor.
3.3.1
3.3.3
3.3.4
3.3.5
3.4
3.7
Is the flat cable connected
to connector CN11 (CN10)
on the Main PCB?
Defective connection
of the flat cable.
Correctly connect
the flat cable.
3.3.3
3.3.4
3.3.5
Actuator Y cuts photosensor
when a document is
inserted?
Actuator Y incorrectly
installed.
Replace the Y
sensor carriage.
Photosensor cut off when
no document is inserted?
Defective actuator Y.
Replace the Y
sensor carriage.
Is photosensor PH1 on the
Y-CA sensor PCB working
correctly?
Defective photosensor
PH1.
Replace the Y-CA
sensor PCB.
Replace
PH1.
b. Defective
sensor unit
(YCA-F).
Normal Conductivity in Y-
CA sensor PCB flat cable?
DisConductivity in flat
cable.
Replace the Y-CA
sensor PCB.
Replace the
sensor
harness
750X4.
3.3.3
3.3.4
3.3.5
3.7
3.8
Does the Y-cutter arm move
when the Y-CA motor
rotates?
Y-cutter arm and
timing belt incorrectly
installed.
Correctly install the
timing belt.
Y-cutter arm is caught
during its movement?
Foreign matter stuck
to Y-sensor rail, Y-
sensor shaft and Y-
cutter arm shaft.
Clean off the foreign
matter.
c. Defective Y-
cutter arm
Is the Y-cutter arm
separated from the sensor
rail?
The Y-cutter arm shaft
is incorrectly installed.
Correctly install the
Y-cutter arm shaft.
3.3.3
3.3.4
3.3.5
3.8
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 ...