P- E.0.0 Prepare To Isolate +12 And +5 Volt Supplies; P- E.2.0 Isolate Power Logic +12 And +5 Volt Dc - Fresenius Medical Care 2008K2 Troubleshooting Manual

P- E.0.0 PREPARE TO ISOLATE +12 AND +5 VOLT SUPPLIES

a) To avoid pulling cables loose, GENTLY open the card cage.
b) ENSURE the 24V POWER harness remained plugged in.
c) Spread the card cage side panels open then gently drop the front panel down.
d) Per the Figure below, locate the Power Logic board AND the motherboard's nine (9) pin TEST
Connector.
e) If equipped with an Old Style Power Logic Board the miniature 'Converter Board' plugs into the
motherboard's nine (9) pin TEST Connector. If equipped with the New Style Power Logic Board the
TEST Connector MUST be VACANT!
f) See procedure number P- E.2.0 (page 599)

P- E.2.0 ISOLATE POWER LOGIC +12 AND +5 VOLT DC

IMPORTANT! Set a CALIBRATED volt meter to DC Voltage (V
a)
Connect the meter's black lead to chassis ground (see
b)
IMPORTANT! Turn the machine on (fan running)!
c)
d) If possible, return to Dialysis Program OR Heat Disinfect!
Part e cotinued on next page
.
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
)!
DC
Figure 2 (page 4)).
Page 599