Drive System) - Canon BJ-W3000 Service Manual

2. 003xx (Drive system)
Problem/Unit
Foreign substance on
rail
Carriage belt
Carriage home
position sensor
Carriage motor (M2)
Linear scale
Linear encoder (PS8)
Carriage controller
Engine controller
Step Check item
1 Can the carriage be moved
smoothly by hand?
2 Is the carriage belt correctly installed?
3 Move the carriage onto the platen
and turn ON the power switch.
Does the carriage move to the home
position?
Turn OFF the power switch and
4
unplug the power cord from the
outlet. Disconnect connector J201
on the engine controller.
Set the tester range to x10 and
connect the leads of the tester to the
harness terminals on the motor side
as shown in the table below. Are
the resistance values correct?
+ -
J201-3 J201-4
J201-5 J201-6
J201-1 J201-3
J201-1 J201-4
J201-2 J201-5
J201-2 J201-6
Is the trouble corrected by replac-
5
ing the linear scale?
Is the trouble corrected by replac-
6
ing the carriage unit?
CHAPTER 5. TROUBLESHOOTING
Result
NO
NO
YES
NO
Resistance value
Approx. 4.8Ω
Approx. 4.8Ω
Approx. 2.4Ω
Approx. 2.4Ω
Approx. 2.4Ω
Approx. 2.4Ω
YES
YES
NO
Remedy
Check for foreign substance, or
some part in contact with the rail
surface.
Reinstall correctly.
Check the wiring for the carriage
home position sensor (PS2). If
correct, replace the purge unit.
Replace the motor.
Completed.
Completed.
Check the wiring from the carriage
controller to the engine controller.
If correct, replace the engine
controller.
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