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170
Troubleshooting Flowcharts
Section 8-4
I/O Check
The I/O check flowchart is based on the following ladder diagram section.
01003
00002
(LS1)
00003
(LS2)
SOL1 malfunction.
SOL1
01003
Yes
Monitor the ON/OFF
status of IR 01003
with a Programming
Device.
No
Is the
IR 01003 output indicator
operating normally?
Check the voltage at the
IR 01003 terminals.
Wire correctly.
Operation OK?
Operation OK?
Is output wiring
correct?
Disconnect the external wires
and check the conductivity of
each wire.
No
Yes
Check output device
SOL1.
Replace the CPU Board
or Expansion I/O Board
with the problem.
Yes
No
No
Operation OK?
No
Yes
Yes
A
To
next
page
Malfunction of SOL1
Is the external
power supply shorted
or overloaded?
Yes
No
Correct the short circuit
or limit the connected
load to the specified
range.
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