T- 2.2.2 Good Signal From Sensor Board Pin C1 - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 2.2.2 GOOD SIGNAL FROM SENSOR BOARD PIN C1

Per the Figure below, measure again at the Power Logic Board's X2 cable,
the REAR of the machine). A good signal is 9.0 volts OR MORE. TWO (2) possible scenarios:
1) IF (and ONLY if) 9.0 volts DC OR MORE: Proceed to
2) IF LESS THAN 9.0 volts DC: See parts a through d below:
a) Turn the machine OFF!
b) TWO (2) possible bad components (see Component List below). Swap in one at a time, with
known good, and continue to part c to test the component.
c) Place the machine into Dialysis or Heat Disinfect.
d) Measure again at the Power Logic Board's X2 cable,
measured the last component swapped in is bad. If still LESS THAN 9.0 volts repeat parts a
through d.
COMPONENT LIST: 1) Power Logic Board (see Figure 4A and NOTE A, page 9);
2) Motherboard
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
pin 6
(TOP row, three pins from
page 264
, procedure number
pin 6
. When 9.0 volts OR MORE is
T- 2.0.1.
Page 277