Bang & Olufsen 1798, Service Manual

Troubleshooting     2.3

Troubleshooting

MLGW not working after software update

Detecting if MLGW is running

The following are signs that the MLGW application is not running:

-  The front panel indicator does not turn green after approximately 1 minute of 

being powered up. 

-  Briefly pressing the setup button produces no visible feedback on the front panel 

indicator. 

-  The unit automatically reboots every minute or so (check for system boot 

indication on the front panel, or critical error indication).

If the application seems to be running, but you cannot connect either via web or 
via telnet (command line interface), first check that the network is working as 
usual; then try resetting the network settings through the front panel. 

For further details regarding network connectivity, please refer to the Network 
settings in the section ‘Adjustment’.

Restarting MLGW on factory-installed software

If a software update causes MLGW to fail (for example due to power failure during 
flash update), the unit can be restarted using the original factory-installed software.

To do this, switch MLGW off, and while pressing the setup button, switch it back 
on. Release the setup button only after 5 seconds. This will start the system using 
the original factory software, but will not fix or replace the ‘broken’ software. You 
need to log into the system and perform a software upgrade to ‘repair’ the 
software.

If you suspect that the failure is inherent to the latest software installed (and not a 
failure during the flash process), then you can manually download an earlier 
software version from BeoWise to you computer, and perform a software update 
from that file.

Erasing entire configuration before application start

If the application fails to start even if restarting on factory-installed software, there 
is a method for erasing the entire configuration from MLGW before the 
application starts up. This can be useful in case of a corrupt configuration, or a 
configuration which causes the older factory-installed software to fail.
The entire configuration is erased if the setup button is pressed when the 
application starts (front panel indicator goes from RED to GREEN) and is released 
within 1 second. So the normal procedure for this is to power up MLGW with the 
setup button pressed, and release it as soon as the front panel indicator goes from 
RED to GREEN (approximately 40 seconds after power-up).

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