Section 8 – Servicing (continued)
Telemotive TR12 inteleSmart Receiver Instruction Manual – 03/01/07
55
Table 8-1. Receiver Diagonostic LED Functions (See Figure 8-1, Receiver Layout for LED locations)
LED COLOR
FUNCTION
RF
Receiver
ON
Red
Power is ON to the RF Receiver.
Normally ON.
Monitors power to the RF Receiver Board. If the main receiver is ON and the RF Receiver ON
LED is OFF. Check to see if the RF Receiver Board is properly plugged in to the main board.
DS1 Green
Monitors regulated 5 VDC power.
Normally ON when AC line is present.
If 5 VDC power is present then the LED is ON. The LED is OFF if 5 VDC power is not present.
Check the 5 VDC regulator and for shorts on the Board.
DS2 Green
Monitors the regulated 12 VDC power.
Normally ON when AC line is present.
If 12 VDC power is present then the LED is ON. The LED is OFF if 12 VDC power is not present.
Check the 12 VDC regulator and for shorts on the Board.
DS3
Green
Monitors the unregulated DC power to the 12 volt regulator
Normally ON when AC line is present.
If AC Power is present and the AC to DC converter is working then the LED is ON. The LED is
OFF if DC power is not present. Check power supply, fuses and if power is applied to the receiver
.
DS4
Yellow
Monitors data synchronization. (Flashes when a properly formatted data signal is received from
the transmitter).
This LED will flash rapidly when data is transmitted. The LED can be used with DS6 to analyze
incoming data. If DS6 is ON or flashing when DS4 also is flashing, another Transmitter Unit on
the same frequency may be present. This is normal. As more Transmitter Units operated on the
same frequency, LED will flash brighter and more often.
DS5
Yellow
Monitors continuity between receiver RF module and CPU module.
Normally ON.
OFF indicates a malfunctioning RF Receiver Board.
DS6
Check
this
first!
Red
Monitors received data errors. Wrong Access Code.
Normally OFF.
If LED is ON continuously when data is transmitted and the system does not respond, the Access
Code of the Receiver and Transmitter Units may not match. A flashing LED during data
transmission may indicate interference of the received data. If LED is ON when data is not
transmitted, another Transmitter Unit may be present on the same frequency with a different
Access Code. The presence of activity on this LED does not necessarily indicate a problem. It
should be used with other indicators in analyzing system status.
DS7
Yellow
Monitors system acitivty.
Normally FLASHING.
OFF indicates a malfunctioning CPU. Replace EPROM.
