®
19
Symptom #7: Absolutely No Functionality
(How to determine which component is at fault)
Component to Test Instructions
1.
Verify Power Supply With a Multimeter, measure the DC Voltage of
the Power Supply while it is connected to the
Connecting Block. Put the negative lead of the
meter on the terminal marked GND and the
positive lead on the terminal marked 12VDC (or
V). You should get a reading between 11.5VDC
and 13.0VDC. If not, remove the supply from
the Connecting Block and measure again -
this time directly on the 2.5mm coaxial plug.
If it reads between 11.5VDC and 13VDC, the
Power Supply is most likely good. Reconnect
to the Connecting Block and proceed to
Step
2
.
NOTE:
In most cases this will indicate the
Power Supply is good but in some cases the
Power Supply can still be bad (i.e. reads good
when not plugged in but may not be able to
handle the current load of the system.)
2.
Verify Emitter. (283D
or 286D Blink Style
ONLY)
Remove the Power Supply from the Connecting
Block and all Emitters from the output. Place a
jumper wire on the Connecting Block between
IR and +12V. Reconnect the Power Supply and
one Emitter. The Emitter should light bright and
solid. Repeat for all Emitters.
3.
Verify IR Receiver.
Remove the Power Supply from the Connect-
ing Block and all Emitters from the output.
Place a jumper wire on the Connecting Block
between IR Signal and GND. Reconnect the
Power Supply. With a known good hand-held
remote, shoot a constant IR Command at the
IR Receiver and verify the Talkback LED on the
IR Receiver flashes.