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Troubleshooting
BR/BD 75/140 R, BR/BD 90/140 R
New Unit Information 03.2004
“Watchdog” fault message
The “Watchdog” function monitors the entire
control function of the unit. It should be checked
every 100 operating hours. You will need a test
connector (special tool) to do this.
1. Turn key switch to position “0”.
2. Unplug the central battery connector.
3. Remove the cover panel and safety cover of
the main control printed circuit board.
4. Reinsert the central battery connector.
5. Turn key switch to setting “I”.
6. Attach the test connector to the 7-pin terminal
strip X1 (next to the main processor). The
connector is pin coded. Do not connect it with
force!
After approx. 3 sec the error message “Watch-
dog” must appear on the display. You must not
be able to activate any of the drive functions. If
you can, the main control printed circuit board
must be replaced.
Following successful check:
1. Turn the key switch to position “0”.
2. Unplug the central battery connector.
3. Remove off the test connector.
4. Reinstall the safety cover and the cover of the
main control printed circuit board.
Watchdog error message
Safety checks
Test connector attached to terminal strip X1
Test connector
ORIGINAL
