3M C960, Service Information

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Model C960 Headset Intercom System Troubleshooting
4-2
E
3M 1997 September
Setup Procedures
1. Connect the analyzer to the battery charger. See
Figure 4-1.
Figure 4-1.
2. Turn the battery charger ON. The analyzer will
run a short self-diagnostic test, displaying each
segment on the analyzer LCD.
When the diagnostic test is complete, the word
READY is displayed on the LCD. This indicates
the analyzer and charger are ready to perform
tests.
Initiating a Test
To initiate a test:
1. Insert the battery to be tested into the left-hand
slot on the battery charger. The word READY
will flash on the LCD. The analyzer remains in
this state until the test selection button is pressed.
2. Press and release the test selection button to
display the first test menu. See Figure 4-2. The
next test menu is displayed each time the test
selection button is pressed.
n
Note
Tests are initiated automatically approximately 10
seconds after they are displayed. Once a test is
initiated, the test selection button is disabled and
the test cannot be interrupted.
Figure 4-2.
3. When the test is complete, the word READY will
flash on the LCD.
Interpreting Test Readings
If the measured capacity of a battery is less than 80%
of the rated capacity, the battery should be re-tested
until the measured capacity is above 80% OR until it
ceases to increase from one test to the next.
If the measured capacity of a battery is less than 80%
after three or four test cycles, it should be removed
from service and disposed of in accordance with local
requirements.
Error Codes
There are two error codes that are displayed to
indicate that an error has occurred.
The code
ER-1 is displayed if the battery under test
loses contact during the test. If this code is displayed,
the test should be repeated.
The code
ER-2 is displayed if the battery under test is
out of the acceptable voltage range for charging. If
this code displays repeatedly, the battery may have a
bad cell. It should be removed from service and
disposed of in accordance with local requirements.