Symptom Reoccurs/Isolate Hydraulic Sensors - Fresenius Medical Care 2008T Troubleshooting Manual

P- G.5.4 SYMPTOM REOCCURS / ISOLATE HYDRAULIC SENSORS
To prevent damage turn the machine OFF!
a)
b) Return the Functional board's P41 connector!
c) To isolate ALL hydraulic sensors at the same time, Figure below, unplug the Sensor board's ribbon cable!
Turn the machine on (fan running)!
d)
Dialysis Program
e) If possible, go to
NOTE! IGNORE acid and / or bicarb pump EOS alarms or grinding!
ENSURE the black lead remains connected to ground!
f)
g) Either re-measure +12 and / or +5 volts (within range?) OR if the symptom was intermittent call debug
screen 1 to watch 5V Est and / or 12V Est. Allowing sufficient time, does the symptom you were
troubleshooting reoccur?
Yes Symptom reoccurs! Proceed to
No Screen on and / or good voltage(s)! See procedure number
(DO NOT go to Heat Disinfect!)
page 665
, procedure number
2008T Troubleshooting Guide
P/N 490292 Rev. A
P- G.5.6.
P- G.5.5 (page 664).
Page 663