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© ⅯⅯⅩⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 120613008
Problems And Their Possible Causes
communicator as this it may stop the feedback. NOTE: Amron’s CC1 communi-
cation cable has been specially designed and tested for this communicator.
Distortion
This can be caused by several conditions – Volume is adjusted too high, system
is on the verge of feedback, marginal components (earphones or microphone).
Check by substitution, replace defective component. Note: when operating
with a standby diver who does not have his hat/helmet on, acoustic feedback or
distortion may occur. Correct by turning his volume down or disconnecting his
communication cable (at least his microphone, which will reduce overall system
noise).
B
CAUTION
Should it become necessary to replace the 12V battery, be sure
to connect the RED wire to the Positive terminal and the BLACK
wire to the Negative terminal. There is a fuse F1 in the ampli-
fier card. When reversing internal battery terminals, this fuse
will blow to protect the electronic circuits and wiring from be-
ing damaged. F1 fuse is replaceable with 3.15A-250V Slow Blow
Micro Fuse
Low Battery Indication
If battery voltage is low, then charge battery for a minimum of 24 hours. Bat-
tery will charge anytime the unit is plugged by external DC power supply. The
preferred method to charge the battery is with power off. The charger circuit
is designed to maintain the battery at full charge during normal operation, and
power can be left on without damage to the battery.
The battery voltage can be checked by measuring across the yellow jacks on the
front panel. Turn the unit on and disconnect external DC power supply.
The voltage at full charge with the external DC power is on should be between
13.4 and 14.5 volts. With the external DC power is off, a fully charged battery
should be between 11.75 and 12.75 volts. The battery voltage of a discharged
battery is 10.0 volts; the battery should not be operated below this point as per-
manent damage will occur.
