T- 1.5.51 5V Hi More Than 5.3 And/Or 24 V Hi More Than 28.0 - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 1.5.51 5V HI MORE THAN 5.3 AND / OR 24 V HI MORE THAN 28.0
A) Turn the machine OFF!
B) Open the card cage and push down HARD on ALL circuit boards!
C) Using compressed air, clean the motherboard's surface of excessive dust.
D) Using a flashlight, inspect the surface of the motherboard for corrosion or burning!
E) BEFORE going to part F, note this page number, then proceed to
DETECTOR CALIBRATION.
F) Return to HEAT DISINFECT then IMMEDIATELY call debug screen 10. If debug doesn't appear press
'Esc' then call screen 10.
G) Allow thirty (30) minutes OR until if "TEMP OVER 95 DEGREES" reoccurs. THREE (3) possible
scenarios 1) or 2) or 3) below:
1) IF (and ONLY if) "TEMP OVER 95 DEGREES" DOES NOT reoccur: DO NOT continue!
2) IF 5V HI = 5.3 OR MORE AND / OR 24V = 28.0 OR MORE: Continue to part H.
3) IF "TEMP OVER 95 DEGREES" reoccured BUT 5V HI REMAINED less than 5.3 AND 24V HI
REMAINED less than 28.0: Proceed to
#3.
H) Read before performing! With the machine off, swap in one of the listed components (see
COMPONENT LIST below) with known good THEN, in between, perform parts I and J to see if the new
component fixes the high voltage problem.
COMPONENT LIST: 1) Power Logic Board
4) Functional Board
1
To LOCATE these boards refer to
2
BEFORE performing parts I and J note this page number then proceed to
VOLTAGE DETECTOR CALIBRATION
3
To prevent "Cond Offset Failure" place the machine into T and C Mode (refer to
MODES, page Error! Bookmark not defined.))
I) Return to HEAT DISINFECT THEN IMMEDIATELY call debug screen 10. If debug does not appear
press 'Esc' then call screen 10.
J) Allowing up to thirty (30) minutes. Based on 5V HI AND 24V HI, TWO (2) possible scenarios:
1) IF (and ONLY if) 5V HI = 5.3 OR MORE AND / OR 24V = 28.0 OR MORE: Return to above
part H.
2) IF 5V HI REMAINS LESS THAN 5.3 AND 24V HI REMAINS LESS THAN 28.0: The last
component 'swapped' in solved the problem.
1, 2, 3
; 5) Power Supply; 6) Motherboard
Figure 4A
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
page 14
page 246
, procedure number's
1
; 2) Actuator-Test Board
1
.
(page 9)
to perform the VOLTAGE
T- 1.5.0, SCENARIO
1, 2 1, 3
; 3) Sensor Board ;
page 14
to perform the
OPERATING
Page 253