User Manual

AS4000 Operations and Maintenance

Section

605-0000-431

. Issue 1.6. Date3/2/99

DLP-003

Page 6 of 44 © Copyright Airspan Communications Corporation 1999

Maintenance Clear Strategy

Loss of comms with Sitespan

Start

Yes

Are

other shelves

at the same CT

still operational

Possible faults

a) Complete power fail at CT

b) PC Internal fault

c) Multiple disconnections of PC

to shelf controller cables

Possible faults

a) SC Card failure

b) PC interface fault

c) Disconnection of PC to

shelf controller cable

d) Power fail to shelf

Continue fault diagnosis

at CT to clear fault

STEP PROCEDURE

Observe full ESD precautions.

1. Using Sitespan :

Check to see if there are other ‘Loss of Comms’ messages

a) From other CTs. Most likely AS8100 (Sitespan) Interface problem.

b) From other shelves on the same CT. Probably a port fault or complete power

failure to the rack.

2. Further faulting will need to be at the CT site.

3. Using the Flow Chart above decide on possible faults.

4. Check the items listed as possible faults and change/repair as required.

STOP. THIS PROCEDURE HAS BEEN COMPLETED.