System Initialization Does Not Reach 100%/Isolate +24 V-A; Card Cage (Ui-Mics Board, J14, Pin 1) View - Fresenius Medical Care 2008T Troubleshooting Manual

P- 2.0.2 SYSTEM INITIALIZATION DOES BOT REACH 100% / ISOLATE +24 V-A
ENSURE the meter's black lead REMAINS attached to chassis ground!
a)
Per the Figure below
b)
Figure 128 – Card Cage (UI-MICS Board, J14, PIN 1)
Turn the machine is ON (fan running)!
c)
d) Measure at the J14 pin as seen in the Figure above. Between 23.0 and 28.0 volts DC AND STABLE i.e.
does NOT change more than +/- 0.5 per minute?
Yes Between 23.0 and 28.0 volts and stable! See procedure number
No NOT between 23.0 and 28.0 volts OR unstable! See parts A and B below:
A) ENSURE the UI-MICS board is inserted tight into its motherboard connector. If not this may
be the problem!
B) If the board was inserted tight, proceed to
, locate the UI-MICS board's J14 connector at the top edge of the board.
2008T Troubleshooting Guide
P/N 490292 Rev. A
P- 2.0.3
page 708
, procedure number
(page 700).
P- 4.0.0.
Page 699