Service Manual

395
6802800U74-AN
Chapter 13: MTS Troubleshooting
13.2.2
Base Radio Fault Indications
Figure 193: Base Radio LEDs
The BRC have 4 LEDs that are under software control: only 3 of these are used (TX, Status, BR
Alarm). The LEDs indicate the main operating state of the BRC, as outlined in the table below.
Additionally there are two SC1, SC2 LEDs indicating network problems.
Table 113: Base Radio Fault Indications
Indication Possible Failure Corrective Action
All LEDs: OFF Power Supply switch is
OFF or power supply is
damaged
• Check if power supply switch is ON
• Verify power to the BR, cabling
• Check LEDs on PSU (power supply ) -
replace PSU (power supply)
Status LED: Am-
ber, Alarm LED:
RED
Waiting for software
download, this is where
BRC will wait if no Site
Controller present
• Check SC link LEDs
• Reset the MTS and interrupt the auto-
boot process. Log on to the required
application: Boot1 on BR-Arch-1, Base
Radio Core on BR-Arch-2. Then use
the following commands, to check if
IP/MAC addresses are valid and are
different on each interface (to avoid
conflicts):
BASE RADIO
Rx 1
DC in
Rx 2
Rx 3
Tx
Service
SC1
SC2
Reset
TX
AUX
Status
BR
Alarm
BASE RADIO
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