P- G.0.0 Isolate Power Logic Board; P- G.2.0 Modules Okay/Isolate Power Logic Board - Fresenius Medical Care 2008K2 Troubleshooting Manual

P- G.0.0 ISOLATE POWER LOGIC BOARD

IMPORTANT! To prevent damage turn the machine OFF!
a)
b) Figure below, trace the cable from the Blood Pressure Module to ENSURE it is NOT reverse connected
with another module! If it first correct this problem THEN re-measure +5 and +12 volts as this may be
the problem!
c) See procedure number P- G.2.0 (page 609).
P- G.2.0 MODULES OKAY / ISOLATE POWER LOGIC BOARD
Swap in a known good* Power Logic Board.
a)
are present in another machine.
*
To LOCATE the board see
IMPORTANT! Turn the machine on (fan running)!
b)
ENSURE the meter's black lead remains connected to chassis ground!
c)
d) Re-measure +12 and / or +5 volts (within range now?). 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! See procedure number
No Screen on and / or good voltage(s) now! The previous Power Logic Board may be bad.
Figure 4A (page 9)).!
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
The board is known good if +5 and +12 volts
P- G.5.0 (page 610).
Page 609