Fresenius Medical Care 2008K Troubleshooting Manual page 108

T- 2.2.0 CHECK FOR FLOW ERRORS / NO WATER
Call debug screen 0. Is Flow Error = 1 OR is a "No Water" message presenting itself?
Yes Proceed accordingly:
"No Water" message: Proceed to page 64,
Flow Error = 1: Proceed to page 14,
PROGRAM
No Three possibilities: 1) Bad actuator board (see
(inside the power supply); 3) Bad motherboard.
T- 2.3.0 CHECK THE POWER CONTROL BOARD (DIODE #17)
a) Call debug screen 0. ASSURE Flow Error = 0 constant. ASSURE a "No Water" message is not
presenting!
b) Turn the power off and unplug the machine. Caution! High Voltage if not unplugged!
c) Referring to Figure 306
control board.
d) Unplug the X2 cable from the top of the power control board.
e) A bad diode 17 may damage the power logc board. Referring to
17's resistance ( )* by placing the meter leads on either side of it.
* NOTE: The meter's diode check function will not work because the diode is 'in circuit'
f) Is the meter's numeric AND units display indicating a resistance between
500 and 1500 (or between 0.50 K and 1.5 K )?
(page 106) open the power supply to access the component side of the power
Figure 306 – Power Control Board / Diode 17
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
SECTION 2 - NO WATER
SECTION 1- FLOW ERRORS IN DIALYSIS
Figure 4A, page 8); 2) Bad power control board
Figure 306
Section 4 – Temperature Problems
(page 106), check diode
Page 106