Huawei 2G BTS Fault Guide

Huawei 2G BTS Fault Guide Fan Alarm Fault

Page 2

Config file not loaded/Site not commissioned

Page 3

RF Unit Maintenance Link Failure

Page 4

RF Unit VSWR Threshold crossed

Page 5

SMT R13 Login issues

Page 6

External Clock Reference Alarm

Page 7

Huawei 2G Fault Guide 04022013CM

1

Fan Alarm Fault

You can see the FAN unit is in alarm If the bottom fan unit is affected it may cause the MRFU units to overheat and the 2G site will fail Huawei 2G Fault Guide 04022013CM

2

Config file not loaded/Site not commissioned

Only the GMTU board is visible If TX is available the 2G config file should load automatically In this situation the site hasn’t been loaded into the BSC Huawei 2G Fault Guide 04022013CM

3

RF Unit Maintenance Link Failure Description This alarm is reported when the maintenance link between the BBU and the RF unit malfunctions Resolution: Replace RFU Check optical interconnections, clean if necessary Confirm the RF plumbing is as per the RF schematics Confirm all connections are tight Sweep antenna Check connectors/tails externally

Huawei 2G Fault Guide 04022013CM

4

RF Unit VSWR Threshold crossed Cause: One of the RFU’s has detected an anomaly with the VSWR. The RFU will shut itself down as a result of this. Resolution: Confirm the RF plumbing is as per the RF schematics Confirm all connections are tight Confirm all hardware used on site meets the frequency used. Replace RFU Sweep antenna Check connectors/tails externally

Huawei 2G Fault Guide 04022013CM

5

SMT R13 Login issues As some of you may be aware Huawei have released a new version of the Site Management Terminal for the BTS3900 2G BTS. The new SMT has been tested in Windows XP and Windows 7. The R13 introduces a new user/password level of System User which prompts for login each time the software is run. The system User name/password is admin/admin

See the below embedded screen log ins compiled by Peter Fraser

Huawei 2G Fault Guide 04022013CM

6

External Clock Reference Alarm Cause: The fault is caused by Jitter and Wander in the transmission network and is usually poor synchronization of the E1 connected to the site (8 KHz frame). There will usually be no transmission alarms or errors, only a SDH/PDH and Jitter/Wander Test Set can be used to test for the fault, but in most cases this is not needed. All that is usually needed is to provide the incoming E1 with a better synchronization source. The reason why there will be no alarms on the E1 is because as far as the E1 in concerned its synch is great, but unfortunately the synch requirement of a BTS are far higher. E1