4 — Ground and power connections
4-6
2902 MainStreet Technical Practices
90-2906-01 May
2002
4.4
Startup diagnostics
At power-up, the unit goes through a startup sequence that includes a number of
startup diagnostic tests (or self-tests). The startup sequence should last for less than
1 minute. Figures 4-5 and 4-6 show the location of the LEDs. When the
2902 MainStreet unit is powered up without any LIMs or data interface modules
installed, the LEDs light up as described in Tables 4-1 and 4-2.
Once the startup sequence is finished, the LED indications depend on the node
configuration. See chapter 24 in
Maintenance
for descriptions of the visual indicators
or if the indicators do not light in the pattern described.
Once the diagnostic tests have run successfully, you are ready to initiate a node
management session, as described in chapter 10 in
Configuration
.
Figure 4-5 Front panel self-test indicators
Figure 4-6 Rear panel self-test indicators
Note —
Wait until the diagnostic tests are completed before
attempting to rectify a problem.
8831
Power
Event Status
System Status
Processor
Out of Sync 1
Out of Sync 2
2902 MainStreet
Network Termination Unit
Power
Event Status
System Status
Processor
Out of Sync 1
Out of Sync 2
8832
Line-1
Slot 2
Slot 1
Line-2
Modem
Terminal
Rx-1
Tx-1
Rx-2
Tx-2
P1
P2
Alarm
Display
O
I
Loop
Status
2
1
U
Status
Loop
Display
2
1
U
EDG Sig/Gnd
Summary of Contents for MainStreet 2902
Page 1: ...2902 MainStreet Network Termination Unit Release 1 0 H T E C H N I C A L P R A C T I C E S ...
Page 40: ...3 Mounting the unit 3 8 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 50: ...4 Ground and power connections 4 10 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 68: ...6 Connecting to the network 6 4 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 90: ...7 Connecting to data devices 7 22 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 108: ...10 Node management 10 10 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 150: ...14 CPSS 14 6 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 218: ...20 Codirectional DCM 20 6 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 234: ...22 HCM rate adaption 22 10 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 246: ...23 Cross connecting circuits 23 12 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 254: ...24 Visual indicators 24 8 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 266: ...25 Alarms 25 12 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 278: ...26 System diagnostics 26 12 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 298: ...27 Loopbacks 27 20 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 332: ...Glossary GL 8 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 343: ......
Page 344: ... 2002 Alcatel All rights reserved 90 2906 01 95 1820 01 00 C ...