T- 2.0.6 Pin 7 Less Than 4.0 Volts; T- 2.0.7 Good Actuator-Test Board Was Swapped In - Fresenius Medical Care 2008K2 Troubleshooting Manual

T- 2.0.6 PIN 7 LESS THAN 4.0 VOLTS

a) Turn the machine OFF!
IMPORTANT!
b) Return NTC #2's connector to the
"CON-NTC".
c) Swap in known good Actuator-Test board. To LOCATE the board refer to
d) With the known good board in, see procedure number

T- 2.0.7 GOOD ACTUATOR-TEST BOARD WAS SWAPPED IN

a) If troubleshooting a DIALYSIS PROGRAM temperature problem return to it ("Select Program" →
'Dialysis' → 'CONFIRM'). If a HEAT DISINFECT problem return to HEAT DISINFECT.
CAUTION!
d) The measurement at the Power Logic board's twenty-pin X2 cable, at
To avoid damage:
1) Use the protected red meter lead!
2) Place the meter lead horizontally on pin 7
machine). 4.0 volts DC or MORE now?
Pin 7
Yes
Pin 7
No
in the following boards, see the BOARD LIST below, and in between repeat procedure
number
BOARD LIST:
the power supply); 4) Motherboard
1
To LOCATE these boards refer to
2
To prevent a "Cond Offset Failure" alarm place the machine into T and C Mode (refer to
OPERATING MODES
now 4.0 volts OR more! The new Actuator-Test board fixed the problem.
still 3.9 volts DC or less! Turning the machine off in between, one at a time, swap
T- 2.0.7 (page 268) to test each until
1,2
1) Functional Board
1
.
Figure 4A
(page Error! Bookmark not defined.))
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
st
1
distribution board position from the left,
T- 2.0.7 (page 268).
(BOTTOM row, four pins from the REAR of the
pin 7
is 4.0 volts DC or more.
1
; 2) Power Logic Board
(page 9)
Figure 4A (page 9).
pin 7,
is repeated.
; 3) Power Control board (inside
Page 268