Troubleshooting Table - ZOLL Base Powercharger 4x4 Service Manual

Symptoms
POWER light does not illuminate.
CHARGER ON indicator light does not
illuminate when battery is inserted into
compartment.
TESTING light does not illuminate when
TEST button is pressed.
Battery fails test cycle. (FAULT light
illuminates with TESTING light).
When the unit does not follow the Power-Up sequence explained elsewhere in this
manual or if a fault light comes on at any time follow the steps listed below to identify
the fault.
Note: The unit can be run through it 's self-test at any time, as long as there is no
battery installed, by pressing the TEST button. When the self-test is invoked on a
single battery compartment the unit will respond by lighting all the LED's associated
with the compartment for a few seconds. This will be followed by a beep and then the
TESTING and BATT. READY LED's will light for a couple of seconds. Then all LED's
extinguish.
Faults that may endanger the reliable charging of a battery or the ability to
charge/test successfully are latching faults that can only be cleared by power cycling
after the fault is fixed. All other faults are self-clearing as soon as the fault condition is
removed.

TROUBLESHOOTING TABLE

TroubleShooting Method and Possible
•
Check that the unit is plugged into an
appropriate power source.
•
Check for defective power cord.
•
Plug unit into another power source.
•
Check for blown fuse. Disconnect power
cord and open fuse holder to check fuses.
•
Check that the battery is properly seated
in battery compartment.
•
Check that battery contacts are clean and
not damaged.
•
Check that unit is plugged into an
appropriate power source.
•
Test the battery compartment for
functionality.
•
Place another battery in the compartment.
•
Check that the battery is properly seated
in compartment.
•
Check that unit is plugged into an
appropriate power source.
•
Remove the battery and press the TEST
button to perform a compartment self-test.
If it does not self-test the button is
defective.
•
Verify that the battery compartment is fully
operational with no defects.
•
Press and hold the TEST button to
determine the fault code. (See Fault
Codes Table on Page III-3).
•
If all FAULT LED's are on most likely
there is a failure in the common circuitry.
III-2
TROUBLESHOOTING GUIDES
Causes