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9-2
Section
Troubleshooting
163
No.
Remedy
Cause
TS indicator status
No.
Remedy
Cause
I/O Units
Commu-
nication
Unit
15
Flashing
(green)
(Special I/O
Unit error)
There is a Special I/O Unit with
the TS and U.ERR indicators lit
red.
ON (green)
A specific error, such as
no operating power
supply, has occurred in a
Special I/O Unit.
Check the operating power supply,
and provide the correct power
supply. If the problem persists,
replace the Special I/O Unit in
which the error occurred.