P- 1.0.6 X2/Pin 3 More Than 6.0 Volts/Isolate Power Logic Board; P- 1.0.7 Pin 3 Less Than 1.4 Volts/Isolate Fan Air Output I.e. Is The Machine On?; P- 1.0.8 Fan Running/Isolate Intermittent Power On Problem - Fresenius Medical Care 2008K2 Troubleshooting Manual

P- 1.0.6 X2 / PIN 3 MORE THAN 6.0 VOLTS / ISOLATE POWER LOGIC BOARD
Continuing to measure at X2, pin 3 press and release the Power button. TWO (2) possible scenarios:
1) IF (and ONLY if) goes to less than 1.4 volts DC: See procedure number
2) IF REMAINS more than 1.4 volts DC: The Power Logic Board is bad.
P- 1.0.7 PIN 3 LESS THAN 1.4 VOLTS / ISOLATE FAN AIR OUTPUT i.e. IS THE MACHINE ON?
Figure right, is air felt from the power supply fan vents?
Yes Fan running! The machine is on! See procedure number
(page 632).
No Fan IS NOT running! TWO (2) possible scenarios. Is the screen:
1) On? OR 2) Remaining black?
1)
IF (and ONLY if) the screen is on: The fan is bad!
2)
IF the screen is remaining black: Unplug the machine and
replace Main Relay K1* AND its four pin cable.
* To LOCATE K1 and its cable refer to
.
P- 1.0.8 FAN RUNNING / ISOLATE INTERMITTENT POWER ON PROBLEM
a) ENSURING the fan continues to run, if (and ONLY if) the screen REMAINS or turns BLACK after forty
(40) seconds see (ABOVE) procedure number
b) ENSURING the fan continues to run, allow adequate time to see if the machine turns itself off. If (and
ONLY if) it DOES turn off proceed to
c) If the screen remains on address any alarm banners that appear.
Figure 132
P- B.0.0
page 647
, procedure number
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
P- 1.0.7
P- 1.0.8
(page 651).
(page 597).
P- 3.0.0.
(page 632).
Page 632