Fresenius Medical Care 2008K2 Troubleshooting Manual page 584

Diode 17 is BAD continued:
b) After BOTH boards are replaced, slide the power supply in but do not screw it in yet!
c) Plug the machine in.
d) Turn the machine on and return to Dialysis Program ("Select Program" → 'Dialysis' →
'CONFIRM').
e) TWO (2) possible scenarios:
1)
IF (and ONLY if) "Heater Relay Test Fail" reoccurs: The bad diode, now replaced,
may have caused other damage. See procedure number
582).
2)
IF "Heater Relay Test Fail" does NOT reoccur: Problem solved! The previous diode 17
AND the Power Logic Board is bad!
LEFT BLANK INTENTIONALLY
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
HEATER RELAY- 2.0.2 (page
Page 580