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3.1 GENERAL
The following procedures are for diagnosing problems
within the system and isolating them down to the module
level. No special test equipment is required.
Both the transmitter and receiver have built in test and
diagnostic devices to aid in troubleshooting. In the event
of a system malfunction, the following guide presents a
logical approach to pinpointing the cause and quickly
restoring the equipment to operation.
Due to the rough treatment it may be subjected to, most
problems are likely to occur in the transmitter. The
transmitter should be thoroughly diagnosed before
proceeding to the receiver.
3.2 TRANSMITTER TESTING
WARNING !
When testing the transmitter, the receiver
may become active resulting in system
operation. Always assume the system is
working and will respond when testing a
transmitter.
AVERTISSEMENT !
Lors des essais du transmetteur, le récepteur
peut s'activer et entraîner la mise en marche
du système. Prendre en considération que
le système fonctionnera et répondra toujours
aux commandes lors des essais du
transmetteur.
When the transmitter is OFF the LED should be off.
Press and release the ON/ALARM button. The LED
should flash at a low rate. Press a command switch.
The LED should flash at a high rate.
If the batteries are getting low, the LED will flash on-off.
(1/2 second on and 1/2 second off) while the transmitter
is ON. The batteries should be changed at the next
convenient opportunity.
SECTION 3: TROUBLESHOOTING
If the LED remains on continuously there is either a
switch activated at the time the transmitter is turned on,
or a general failure that requires factory service. If the
LED remains lit continuously on power-up, insure that
no other switches are pressed while attempting to turn
the transmitter on.
If the test LED does not light at all, replace the batteries.
If this does not fix the problem, the transmitter is
inoperable and must be repaired.
3.3 RECEIVER TESTING
Receiver LEDs. Refer to Section 6 for the locations of
the decoder diagnostic LEDs inside the receiver cabinet.
On 21R10 and 21R14 receivers, the Power, Address
and Signal LEDs are on the RF/Processor board which
is mounted below the Relay board.
On 21R22 receivers the Power and Signal LEDs are
on the RF/Processor board which is mounted on top of
the Relay board.
POWER - Indicates the +12 VDC, receiver operating
ADDRESS - This will flash each time a signal received
3.1
voltage is present.
matches the decoders address. This is not used for
the 21R22 receiver.
POWER
ADDRESS
SIGNAL
Figure 3.1 21R10 Receiver Diagnostics Indicators
K1
K2
K3
K4
K5
K6
K7
K8
K9
K10
K11 (OPI)
K12 (OPR)
A1
A2
A3
A4
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