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SECTION 3—MAINTENANCE AND TROUBLESHOOTING
MA90 Series 26 Part No 1148139
No power Control unit off Check power source and turn on
unit
Power cord disconnected Connect power cord to the power
source
No power in the power source Check power source has power
power and turn it On
Power outage Wait till the power source has
power
Blown fuse Replace blown fuse with an
equivalent fuse
PROBLEM CAUSE SOLUTION