ITC 220 Base Station, Locomotive & Wayside Radio Transceiver Field Service Guide PN 0046300120 Rev. A
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5.3
VISUAL INSPECTION
Visually inspect the transceiver and note any dents or damage or missing or loose parts. Also verify heat-sink fins are
clear of dust and debris, that potential sources of excessive heat are not mounted near the transceiver, and that the
bullet points described in
Routine Maintenance
have been followed.
If you detect damage or missing parts, you will need to determine whether the transceiver is repairable or if it should
be replaced. Depending on what you determine, you may need to order replacement parts or a replacement
transceiver accordingly.
5.3.1
CONFIRM SD MEMORY CARD (CIM) IS INSTALLED AND SEATED
Note:
The SD memory card must be inserted in the orientation shown on the door.
To confirm the CIM card is installed and seated:
Open the CIM door to ensure the SD memory card is present in the CIM socket.
Push the SD memory card once to release it.
Push the SD memory card again to ensure it is seated in the socket.
Once confirmed, close and secure the CIM door.
5.3.2
LED DIAGNOSTICS
The front panel LEDs show the general operational status of the transceiver after it has conducted a POST, which it
does each time it boots up.
Table 6 Front panel LEDs
includes a description of the function of each LED as well as the
color of each LED when the transceiver is functioning properly.
Note:
If a problem occurs
after
the transceiver boots up, the front panel LEDs indicate the problem only after a reboot
of the transceiver (provided the problem persists).
Read the description of each LED carefully. Some LEDs, such as the PWR LED, indicate a problem when they are off.
Other LEDs, such as the FLT (Fault) and SWR, indicate a problem when they are lit. A time-stamped entry will be written
to the ALARM.LOG file on the CIM SD card and will be displayed onscreen when connected in XtermW whenever the
FLT or SWR LEDs are illuminated.
Table 6 Front panel LEDs
Label
Description
Color
PWR
Power — Blinking green LED indicates that the unit is on.
Green
TX
Illuminates when the radio transmitter is keyed.
Red
SWR
Illuminates when the VSWR of the TX port exceeds approximately 3:1.
Illuminates if the TX forward power is not within 25% of the RF output power setting.
(A time-stamped entry specifying the cause will be entered in the ALARM.LOG file and will
display in the XtermW window hen connected.)
Red
RX
Illuminates when the transceiver is receiving a valid 220 MHz PTC signal.
Amber
DTL
DTE Link — Illuminates when the transceiver establishes a connection to a Communication
Manager (CM) through the Ethernet network port.
Amber