Co- 7.3.0 Isolate Positive (+) 12 Volts Dc Supply; Co- 7.3.1 Isolate +12 Volt Dc Supply - Fresenius Medical Care 2008K2 Troubleshooting Manual

CO- 7.3.0 ISOLATE POSITIVE (+)12 VOLT DC SUPPLY
a) CAREFULLY return Cond Cell #7 to distribution board position "X7, COND".
Turn the machine OFF
b)
c) To avoid pulling cables loose, GENTLY open the card cage.
d) See procedure number

CO- 7.3.1 ISOLATE +12 VOLT DC SUPPLY

a) Return to concentrate connectors to their rinse ports.
b) Place the machine into RINSE!
c) Spread the card cage side panels open then gently drop the front panel down to access the
motherboard's nine (9) pin TEST Connector (Figure below).
IMPORTANT! Set your CALIBRATED volt meter to DC volts (V
d)
Connect the meter's black lead to chassis ground (see Figure 2 (page 4)).
e)
f) Per the Figure below, measure at the TEST Connector's
(2) possible scenarios:
1) IF (and ONLY if) between 11.7 and 13.3 volts DC: See procedure number CO- 7.3.4 (page
365).
2) IF NOT between 11.7 and 12.3 volts DC: Replace the Power Logic Board*.
* To LOCATE the board refer to Figure 4A (page 9).
.
CO- 7.3.1 (page 364).
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
DC
+12V
pin (pin 5, five pins from the left). TWO
).
Page 364