Wd- 1.0.6 Troubleshoot Power Supply/Card Cage - Fresenius Medical Care 2008K2 Troubleshooting Manual

WD- 1.0.6 TROUBLESHOOT POWER SUPPLY / CARD CAGE
Referring to the Component List below, perform parts a and b:
a) Turn the machine OFF and swap in each component, one at a time, starting with the 24V Harness.
b) Turn the machine on. If (and ONLY if) the WD: Fail Long Pulse" OR "WD: Fail Short Pulse" reoccurs
AND there is more than 3.0 volts at the Functional Board's P4 connector pin 1, continue through the list
until the WD alarm no longer occurs.
Component List: 1) 24V Harness*; 2) Power Control Board (inside the power supply). 3) All card cage
boards. 4) Motherboard.
*
To LOCATE the 24V Harness refer to Figure 109 (page 573)
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
Page 575