Section 25 - Troubleshooting Power Distribution - Fresenius Medical Care 2008K2 Troubleshooting Manual

SECTION 25 - TROUBLESHOOTING POWER DISTRIBUTION

BEFORE continuing to part B, perform
A)
6!
B) If troubleshooting the screen 'remaining black', if air is felt from the Power
Supply vents (Figure right) = fan running = MACHINE IS ON!
C) Figure right, the Main Power Switch does not turn the machine on but must be
on to turn the machine on! It MUST REMAIN ON for all procedures!
D) Proceed according to the OBSERVED symptom ONLY! Listed below are
eleven (11) possible symptoms:
1) IF 'blows' the GFI i.e. wall breaker: A) Turn off ALL OTHER machines that are connected to GFI
circuit; B) Reset the GFI; C) Plug a known good machine into it; D) If possible, place it into Heat
Disinfect THEN allow up to thirty (30) minutes for the GFI to possibly 'blow' again. TWO (2) possible
scenarios i) or ii) below:
i) IF (and ONLY if) the GFI 'blows' again: Either the GFI is not rated for the current drawn
when a machine is in Heat Disinfect OR it may be bad.
ii) IF the GFI DOES NOT 'blow' again: There may have been too many machines plugged into
the circuit. Plug in the suspected malfunctioning machine and (if possible) place it into Heat
Disinfect. If (and ONLY if) the GFI 'blows' again see procedure number
2) IF "24V Low" OR "24V High" OR "WD: 24V Rcvr Err Short" OR "WD: 24V Rcvr Err Long":
page 597
Proceed to
3) IF "5V Low" OR "5V High": Proceed to
4) IF "12V POWER FAIL": Proceed to
5) IF the fan is running BUT, after fifty (50) seconds, the screen REMAINS BLACK: Proceed to
598
, procedure number
6) IF the machine turns on (fan runs) BUT THEN turns itself off: Proceed to
number P- 3.0.0.
Scenarios 7 through 11 next page
, procedure number P- B.0.0.
page 597
page 597
P- C.0.0.
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
INITIAL CHECKS
, procedure number
, procedure number P- B.0.0.
(page
P- A.0.0 (page 595).
P- B.0.0.
page 647
, procedure
page
Page 593