Symbol Technologies MicroBase MRC-921 - Manual (Page 15)

Supplying power to the MRC-921
Equipment required:
• A 12-volt, 800-mA power pack
To use the unit outside of the U.S. or
Canada, you need a power pack
designed for a 220-volt AC outlet. • An electrical outlet within 6 feet (1.8 meters) of
the MRC-921 providing 110 volts AC in the
U.S. or Canada
1. Place the MRC-921 on a flat surface in a location
where the temperature will be between 50
degrees F (10 degrees C) and 110 degrees F (43
degrees C).
2. Plug the power pack’s connector into the
MRC-921’s power connector.
3. Plug the power pack into the electrical outlet.
Running the power-on self test
When you plug in the MRC-921, it performs a series
of self-diagnostic tests to ensure it is operating
correctly. These tests are indicated by flashing
patterns of the PTC and spare battery pack
light-emitting diodes (LEDs).
Refer to the “Troubleshooting”
section on
page 24 for information
on possible errors.
If the MRC-921 passes these diagnostics, all the
LEDs turn off after 10 seconds, provided the unit does
not contain a PTC or spare battery pack. If any LEDs
stay lit, the diagnostics have discovered an error.
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