T- 5.0.3 Check Debug Screen 4 Values - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 5.0.3 CHECK DEBUG SCREEN 4 VALUES

6.04 KΩ
Leaving the plug installed, call debug screen 4. Is TEMP (lower left) between 4.0 and 6.0?
Yes TEMP between 4.0 and 6.0! Proceed to
No TEMP is NOT between 4.0 and 6.0! See parts a and b below:
a) ENSURE the
distribution board position from the left labeled "MON-NTC". If NOT, repeat procedure number
T- 5.0.3 (page 297) from part b.
b) Read before performing! One at a time, swap in the listed components (see COMPONENT
LIST below), with known good and in between repeat procedure number
When TEMP is between 4.0 and 6.0 the last component swapped in is the problem.
COMPONENT LIST: 1) Actuator-Test Board; 2) Power Logic Board; 3) Functional Board
(possibly IC20)
1
To prevent "Cond Offset Failure", place the machine into T and C Mode for EACH board
(refer to
6.04 KΩ
plug, from the TWO-RESISTOR SET, is placed correctly at the
1 1
; 4) Sensor Board
OPERATING MODES, page Error! Bookmark not defined.).
LEFT BLANK INTENTIONALLY
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
page 302
, procedure number
; 5) Distribution board; 6) Motherboard
T- 7.0.0.
nd
2
T- 5.0.3 (page 297).
Page 297