Fresenius Medical Care 2008K Troubleshooting Manual page 225

BL- 5.0.0 CHECK BLOOD LEAK
CAUTION!
During this procedure DC voltages will be measured at pins that are close together and
'shorting' them with a regular meter probe may damage the VERY EXPENSIVE sensor board. It is
HIGHLY RECOMMENDED the Fluke TP 80 meter probe (or equivalent), together with the protective
cap (see Figure 5, page 11) is used!
BL- 6.0.0 (page 224).
a) Open the card cage. Place the meter's ground (black) lead on chassis ground (see
b) Call debug screen 4 to see LEAK and DIMN.
c) Referring to Figure 90
measure DC voltages from the solder (rear) side of the sensor board's X2 connector:
Figure 90 – Electronic Card Cage (Sensor Board)
Table 25 – Sensor Board 'X2' DC Voltage Checks (Refer to
X2 Pin X2 Pin Location
2
Top row, first pin
from the rear of
the machine
6 Top row, third pin
from the rear of the
machine
7
Bottom row, fourth
pin from the rear of
the machine
If a Fluke TP 80 (or equivalent) is not available see
(page 223) and Table 25
Less than 0.5 volts DC: Measure at pin 6 (next row in this table)
Greater than 0.5 volts DC: Bad test board (see page 8).
Less than 4.5 volts DC: See procedure number
Greater than 5.2 volts DC: See procedure number
Between 4.5 and 5.2 volts DC: Does debug screen 4, LEAK = pin 6 +/- 0.3?
Yes Measure at pin 7 (next row in this table).
No Bad sensor board (see page 8).
Less than 4.0 volts DC: See procedure number
Greater than 6.0 volts DC: See procedure number
Between 4.0 and 6.0 volts DC: Does debug screen 4, DIMN = pin 7 +/- 0.3?
Yes See procedure number
No Bad sensor board (see page 8).
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
(page 223), using the Fluke TP 80, CAREFULLY
Figure
Response:
BL- 6.0.0 (page 224).
Section 15 – Blood Leak Problems
Figure 1, page 3).
90)
BL- 6.0.0 (page 224).
BL- 6.0.0 (page 224).
BL- 6.0.0 (page 224).
BL- 6.0.0 (page 224).
Page 223