User's Manual

EX7100 Technical Manual - Module Descriptions
©1999 Exicom Technologies (1996) Ltd 7-67 Issue 3 - May 2001
Begin
Modem
Controller D8 on
and D9
off?
Suspect Radio
or Modem
Problem
No
Yes
Suspect Radio
or Modem
Problem
No
Ensure That Full
Duplex Link is
Operating
Loopback
Lines. Loopback
Works On All 6
Lines?
Line Card
Probably
Faulty
Replace Line
Card
No
Line Card Is
probably OK
Finish
Yes
Line Card
Configuration
Correct?
Configure Line
Card
Yes
No
Yes
Line
Interface PSU
Voltages
OK?
Yes
Replace Line
Interface PSU
Module
No
See
Note 1
Note 1:
At first turn on, all LEDs adjacent
to the DSPs should be ON. After going off-
hook and DTMF dialling, the LED for the
particular channel will go OFF.
Figure 7.36: Six Channel Line Interface Fault Diagnostic Tree
7.13.3 Alignment/Re-tuning
Each Line Interface module requires no physical alignment or physical user adjustment.