P- H.4.5 +24 Volt- A Troubleshooting - Fresenius Medical Care 2008K2 Troubleshooting Manual

P- H.4.5 +24 VOLT- A TROUBLESHOOTING

a) Spread the card cage panels open then gently drop the front panel down.
b) ENSURE the volt meter's black lead remains attached to chassis ground!
c) ENSURE the machine in on (fan running)!
Figure below
d) , place the red meter lead into the RIGHT SIDE socket of the motherboard's white, two
(2) pin, +24V-A connector. BE CERTAIN to make good contact with the metal pin inside the socket!
e) TWO (2) possible scenarios:
1) IF between 23.0 and 28.0 volts DC (V
2) IF NOT between 23.0 and 28.0 volts DC (V
P- 4.0.0.
DC
Figure 119 – Motherboard +24V-A Connector
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
): See procedure number
page 649
): Proceed to
DC
P- H.4.6 (page 626).
, procedure number
Page 625