Omron SYSMAC C Series

Maintenance and troubleshooting
The following flowcharts will enable you to determine the source of any
abnormality occurring in the PC or I/O link unit.
General flowcharts
Refer to "Power supply
flowchart”
Refer to “Failure flowchart"
POWER indicator lit?
YES
1
RUN indicator lit?
YES
ERROR/ALARM
indicator blinking?
Refer to “Battery flowchart”
Refer to “I/O flowchart”
Refer to “Environment
flowchart"
YES
Replace CPU
For VO link unit
YES
YES
YES
NO
input/output
sequence normal’?
Environmental
conditions normal’?
Refer to “Power supply
flowchart"
Refer to “Failure flowchart"
Refer to “Environmental
flowchart”