Users Manual Part 2

13.2.1.5.1
Base Radio Replacement
Replace suspected modules within the BR with known non-defective module to restore the station to
proper operation. For a list of available FRUs, see Field Replaceable Units (FRUs) on page 478
.
13.2.2
Base Radio Fault Indications
Figure 194: Base Radio LEDs
BASE RADIO
FRONT VIEW
BASE RADIO
Service
Rx 1
DC in
Tx
AUX
Status
BR
Alarm
SC2
SC1
Rx 2
Rx 3
Reset
TX
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 112: 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
• Check SC link LEDs
6802800U74-AP
Chapter 13: MTS Troubleshooting
425