User Manual
2019
Cervis, Inc.
9
3.0
MCB-9XL Battery Installation
Four “AA” cell batteries power the MCB-9XL mini console box units. When installing batteries, be
sure to observe proper polarity
—as marked on the inside of the compartment—to avoid
damaging the unit. To replace or install batteries in the MCB:
1. Loosen the four Phillips battery compartment cover screws on the rear of the
transmitter, and lift the cover from the MCB.
2. Install (or replace with) four fresh size
“AA” batteries. Observe proper polarity by
positioning the batteries as illustrated in Figure 2.
3. Replace the compartment cover, and tighten the four Phillips screws. Do not
over-tighten these screws,
but make sure they are tight enough to properly
seal the gasket.
Figure 2. MCB-9XL Battery Installation
Caution!
Be sure to observe proper polarity when placing batteries in the
MCB-9XL battery compartment.
3.1
Low Battery and Auto Shutdown
Low Battery Warning
The MCB-9XL Low Battery Warning is factory set to activate when the power voltage reaches
2.2V. At this time, the
Bat
LED begins blinking once per second until the voltage reaches the
2.0V Auto-Shutdown voltage. Cervis, Inc. recommends replacing the batteries as soon as
possible once the
Bat
LED begins flashing. Replacement batteries must be four new size
“AA”
alkaline batteries, and all four batteries must be made by the same manufacturer.
Note:
If the transmitter is linked to a receiver, the receiver horn blows four times per minute
when under Low Battery condition.
Caution!
Do not mix battery manufacturers when replacing the MCB-
9XL batteries. Batteries must be fresh and all from the same
manufacturer.
Auto-Shutdown
Auto-shutdown occurs when the power voltage drops to 2.0V. The MCB-9XL shuts down when
2.0V is reached. It will not activate until the used batteries are removed, and a fresh set of four
“AA” batteries is installed. (Follow the directions in Section 0.)
Battery Cradle Polarity Labels
