Star Headlight & Lantern STAR-PA RP310Q - Manual (Page 6)

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Troubleshooting
One Side Not Flashing
1. If a problem exists in only one head, you need to determine where the problem lies:
• The strobe tube may have burned out
• There may be an open electrical connection in the wiring harness or strobe head
• The circuit may have failed.
2. First determine whether the failure is in the strobe tube. Unplug the two strobe head
cables and flip-flop them, plugging them into the opposite connector they were just
plugged into. If the same head still doesn’t flash, you can assume the pack is probably
functioning properly and you should skip to Step 3. If the original failed head is now
flashing, and the other head has stopped working, then you can assume the problem is
in the circuit. It will have to be replaced or repaired at the factory.
3. If one of the heads will not flash when plugged into either of the outlets on the pack,
you will need to determine whether the problem is in the cabling or the head itself. This
can be done by disconnecting both heads from their respective cables and plugging
them into the opposite cables. If the same head fails to flash on both cables, and the
other head works on both cables, then you can assume the head is bad and will need
to be replaced. If both heads flash on one cable and fail on the other cable, then you
can assume the cable is faulty (as long as you followed step 2 to verify the problem
was not in the pack itself) and you will need to replace the cable or connectors.
Both Sides Not Flashing
1. Check all fuses, including those at the battery, at the switch panel, or in the dash (if
applicable). Replace any blown fuses with only fuses of identical values. Replacing
the fuse with the wrong rating may damage your pack and/or vehicle, and will void your
warranty.
2. Check the power and ground wires to your pack. With the vehicle turned off and
while the pack is running, measure the voltage across the red wire (pin 1) and the black
wire (pin 2) of the PWR connector on the power pack. Push the probes of the test
meter down into the connector at the wire entry points to contact the terminals for the
measurement. A nominal 12.5 volts should be present. Low voltage to the pack can
cause erratic flashing or even complete failure of the heads. A minimum of 9.5 volts
should be present for the pack to operate properly.
If your pack is receiving sufficient voltage then you can skip to Step 3.
If you do not have proper voltage present your power or ground is bad. Skip to the
section on Checking a Bad Power or Ground Connection.
3. Check each head. If the leads in one of the heads have shorted out, the output
voltage of the other heads may be held down as well. To test for this, unplug all of the
heads and plug them in individually. If your problem is a result of a shorted head, then
the other heads should function properly if the faulty head is no longer connected.
Note: A burned out strobe tube does not cause a short and will not affect the operation
of the remaining heads. If the problem is not with a shorted head and if proper voltage
is reaching the pack, the problem is most likely internal to the pack. Call Star to obtain
an R.M.A. number to return the pack for service.