A-1
A
PPENDIX
A
T
ROUBLESHOOTING
Diagnosing Switch Indicators
This switch can be easily monitored through panel indicators to identify
problems. The table below describes common problems you may
encounter and possible solutions
Table A-1 Diagnosing Switch Indicators
Symptom
Possible Cause
Action
Power Module
LED is off
-48 VDCor AC
Power outlet,
power cord, or
power module may
be defective.
• If using a DC power
conversion module, check the
connections between the
switch and the external DC
power supply. If using an AC
power module, check
connections between the
switch, the power cord, and
the wall outlet.
• Contact your dealer for
assistance.
Power Module
LED is off
+12 VDC
Power module may
be defective.
• Internal power supply has
failed. Contact your local
dealer for assistance.
Diag LED is off
Boot-up diagnostic
program has
detected a problem.
• Power cycle the switch to try
and clear the condition.
• If the condition does not clear,
contact your local dealer for
assistance.
Summary of Contents for 7824M/FSW
Page 2: ......
Page 18: ...TABLE OF CONTENTS xviii E Ordering Information E 1 Glossary Index ...
Page 40: ...NETWORK PLANNING 2 8 ...
Page 58: ...INSTALLING THE SWITCH 3 18 ...
Page 68: ...MAKING NETWORK CONNECTIONS 4 10 ...
Page 72: ...TROUBLESHOOTING A 4 ...
Page 80: ...CABLES B 8 ...
Page 86: ...EXTENDER MODULES C 6 ...
Page 96: ...ORDERING INFORMATION E 2 ...
Page 102: ...GLOSSARY Glossary 6 ...
Page 106: ...INDEX Index 4 ...
Page 107: ......