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5-5
CM III WILL NOT GO INTO
PROGRAMMING MODE OR
DOES NOT ACCEPT
CHANGES TO PROGRAM.
Press Power Switch OFF,
disconnect unit from electrical
power, open control panel by
removing screws in upper corners,
and unplug wiring harness from
interface board. Wait two minutes.
Reconnect computer wiring
harness, close control panel,
reconnect unit to electrical power,
and press Power Switch ON.
Does
computer operate
properly?
Problem
resolved.
Press Power Switch OFF,
disconnect unit from electrical
power, open control panel,
remove computer and replace
with another known to be working.
Close control panel, reconnect
unit to electrical power, and press
Power Switch ON.
Does
computer operate
properly?
Problem is beyond
scope of operator
troubleshooting.
Probable cause is
a defective or failed
computer.
Call FASC.
Yes
No
YesNo