Mitsubishi Electric Q173CPU User Manual page 191

6 INSPECTION AND MAINTENANCE
(i) Flowchart for when the power supply of teaching unit is not
turned on.
The following shows the flowchart when the power supply of teaching unit
is not turned on during the power supply of Motion CPU ON.
The power supply of teaching
unit is not turned on.
Does
the current
consumption of the system
added teaching unit exceed the rated
output current of power
supply module?
NO
Are all the connecting
cable connected to the
connector correctly?
YES
Are all the connecting
cable wired to the
correct connector?
YES
Is the connecting
cable made by the user?
NO
If the
connecting cable is
replaced or the wiring is corrected,
is the power supply of teaching
unit turned on?
NO
If the teaching unit is
replaced, is the power supply of
teaching unit turned
on?
NO
If the Motion CPU
module is replaced, is the power
supply of teaching unit
turned on?
NO
H/W error
Explain the error symptom and get
advice from our sales representative.
YES
Review the system.
NO
Connect the connector correctly.
NO
Is the power supply of
teaching unit turned on?
NO
Wiring the connecting cable correctly.
NO
Is the power supply of
teaching unit turned on?
connecting cable is
YES replaced or the wiring is corrected,
is the power supply of teaching
unit turned on?
Connecting cable error
YES
Explain the error symptom and get
advice from our sales representative.
Teaching unit H/W error
YES Explain the error symptom and get
advice from our sales representative.
Motion CPU H/W error
YES
Explain the error symptom and get
advice from our sales representative.
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YES
YES
If the
YES
NO
Completion