G l o b a l s t a r M C M - 4 M
G E N E R A L T R O U B L E S H O O T I N G
5-1
5.
Troubleshooting
CAUTION
- Allow only authorized personnel to install or service the Multi Channel Modem
System components.
5.1.
General Troubleshooting
For other assistance contact your MCM-4M Technical Support Person (list below for future reference).
Name: _________________________________ Phone ______________________
Problem
Solution
Front Panel LCD not illuminated,
MCM-4M Fans not running
1
Verify Power switch on MCM-4M Front Panel is set to ON.
2
Check Power Supply connections and verify 110 VDC service is operational.
5.2.
Other Problems
This section assumes that the reader is familiar with using MS-DOS prompt PING commands (ICMP
messages) to test the responsiveness of network elements any intervening connections Troubleshooting
the MCM-4M.
5.2.1.
Problem:
”None of my remote client terminals are able to browse the World Wide Web”.
1.
Ping (continuous) the IP address of the browser’s proxy server. Stop the test after 45
seconds. If PING replies were received, then check the Browser’s proxy setting and retry.
If the PINGs were not replied to, then go to step 2.
2.
PING the IP address of the MCM-4M. If the PINGs were not responded to then go to
step 3. If the PINGs were responded to go to step 5.
3.
Check that the Multi Channel Modem (MCM-4M) unit is being supplied with main power
if ON then go to step 4. If OFF, restore main power to the MCM-4M and retest.
4.
Interact with the MCM-4M, using the HyperTerminal facility (contact your Technical
Support Person). If the PINGs are not replied then go to step 5. If prompted for
Username and password, then go to step 5.
5.
The problem may due to an internal failure of the MCM-4M.
6.
Contact you Technical Support person.
5.2.2.
Problem:
”I can’t reach a particular VPN destination (but I can reach other VPN destinations or I can
browse the World Wide Web)“.
1.
Ping (continuous) the FIXED IP address of the browser’s proxy server. Stop the test after
45 seconds. If PING replies were received, then the problem is likely to be somewhere at
the other end of the VPN tunnel. However, whether the PINGs were replied to or not,
contact your Technical Support person.
Summary of Contents for MCM-4M
Page 26: ...G l o b a l s t a r M C M 4 M D R A W I N G S 7 2 ANCT0601 001 MCM 4M Parts List...
Page 27: ...G l o b a l s t a r M C M 4 M D R A W I N G S 7 3 ANCT0601 001 MCM 4M Front and Rear Panel...
Page 28: ...G l o b a l s t a r M C M 4 M D R A W I N G S 7 4 ANCT0601 001 MCM 4M Top and Side View...
Page 29: ...G l o b a l s t a r M C M 4 M D R A W I N G S 7 5 ANCT0601 001 MCM 4M Top View Cover Removed...
Page 31: ...G l o b a l s t a r M C M 4 M D R A W I N G S 7 7 ANCT0601 001 MCM 4M RF Cable Diagram...
