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CHAPTER 5 TROUBLESHOOTING
IV. OPERATION TROUBLESHOOTING
When an operation problem occurs, check the error message displayed on the display
connected to a computer. Also perform an operation check on the sensors and motors using the
service mode.
1. Power Does Not Come ON
The power indicator is not lit.
Note: Make sure to use the AC adapter and power cord supplied with the machine.
Cause/Faulty
Locations
Step Check Item Result Action
Connection of power
cord
1 Is the power cord
connected?
NO Connect the connectors
correctly.
AC power supply
voltage
2 Is the power outlet
supplying power at the
rated voltage?
NO Explain to the user that
this is not a problem with
the machine.
Connection of AC
adapter
3 Is the AC adapter
connected?
NO Connect the connectors
correctly.
Power button 4 Is the power button on? NO Turn the power button
on.
Power cord 5 Does replacing the power
cord fix the problem?
YES Done.
AC adapter 6 Does replacing the AC
adapter fix the problem?
YES Done.
NO Connect the connectors
correctly.
Control PCB
Operation PCB
7 Is the cable connected?
YES Replace the PCB.
Table 5-401
5-38
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CANON ELECTRONICS INC. 2011 CANON DR-M140 FIRST EDITION