Valleylab CUSA EXcel-8 - Page 127

Engineer Troubleshooting
Footswitch Alarm
Symptom: Footswitch
alarm
Is footswitch
connected?
Connect footswitch.
Is + 15 V supply
good?
(Ground = TP8,
+15V = TP1,-15V =
TP2 on ultrasonics
board.)
Call Valleylab Service
for assistance and report
findings. '
x
With
footswitch
connected, is
resistance
from TP8 to J9, pin
15 less than 100 on
Ultrasonics
board.
Measuring
footswitch
independently, is
resistance between
pins 2 and 7 less
than 10.
Call Valleylab for |
return aurhorization
number
and return footswitch.
Call Valleylab Service
for assistance and report
findings.
Mer
om
10-18
CUSA EXcel-8 System Service Manual i