P- H.1.5 Symptom Still Present; P- H.1.6 Isolate Converter Board (If Present) - Fresenius Medical Care 2008K2 Troubleshooting Manual

P- H.1.5 SYMPTOM STILL PRESENT

To avoid damage, turn the machine off!
a)
b) Return the Functional and Power Logic board device cables to EXACTLY as recorded above!
c) Referring to see Figure 4A and NOTE A (page 9), if (and ONLY if) the machine is equipped with the
New Style Power Logic Board (i.e. NO 'Converter Board') skip to procedure number
622). If the 'Converter Board' is present see procedure number

P- H.1.6 ISOLATE CONVERTER BOARD (IF PRESENT)

a) CAREFULLY remove the Converter Board from the motherboard's nine (9) pin TEST connector.
b) If the screen is NOT turning ON skip to part d. If the screen IS turning on enter
Service Mode → Options → Hardware Options. Next to T and C Mode place the
'X' in the "Yes" box and press the 'CONFIRM' key (the 'X' turns blue).
c) Turn the machine ON (fan runs).
d) If possible, place it into Dialysis or RINSE. IGNORE the 'grinding sound' and all hydraulic alarms!
e) ALLOWING sufficient time for the symptom to develop, either measure for +12 and/or +5 volts DC (V
OR call debug screen 1 to monitor 5V Est and/or 12V Est. Within range and stable now?
Yes Good voltages and stable! The Converter Board may be causing the problem!
The new Convertor Board MUST be installed with the 'solder side' towards the front of
the machine AND matched pin for pin to the TEST connector!
No See procedure number P- H.1.7 (page 622).
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
P- H.1.7
P- H.1.6 (page 621).
(page
),,
DC
CAUTION!
Page 621