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2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
Page 579
HEATER RELAY- 2.0.0 ISOLATE DIODE 17 (D17)
A bad diode 17 (D17) destroys Power Logic Boards. See parts a THROUGH h below:
a) Turn the power off and unplug the machine!
Caution!
Electrocution hazard if not unplugged!
below, open the power supply to see the component side of the Power Control board.
c)
IMPORTANT!
The twenty (20) and nine (9) pin
*
cables MUST be unplugged
! *
BEFORE unplugging
the nine pin cable NOTE its polarity (i.e. orange wire on the right)!
Figure 111 – Power Control Board (Diode 17)
d)
IMPORTANT! Set your volt meter to
RESISTANCE (Ω)!
g) Per Figure 111, check diode 17 (D17) by placing one
meter lead on one side of it and the other lead on the
other side.
h) Figure right, reading the meter’s numeric AND units display,
TWO (2) possible scenarios:
1)
IF (and ONLY if) between 900 and 1500
Ω! (0.900 and 1.5 KΩ):
Diode 17 is good!
Proceed to
page 581
, procedure number
2) IF less than 900
Ω (0.900 KΩ) OR more than 1500 Ω (1.5 KΩ):
Diode 17 is bad!
Perform parts a THROUGH e below:
a)
IMPORTANT!
Replace
BOTH
the Power Control AND Power Logic boards with known
good! To LOCATE the Power Logic board refer to
(page 9).
Parts b through e next page
Summary of Contents for 2008K2
Page 1: ...2008K K2 HEMODIALYSIS SYSTEM TROUBLESHOOTING GUIDE Part Number 507298 Rev H ...
Page 655: ...2008K K2 Troubleshooting Guide P N 507298 Rev H Page 651 Figure 132 Inside the Power Supply ...
Page 668: ...2008K K2 Troubleshooting Guide P N 507298 Rev H Page 664 Figure 134 24 V Power Harness ...
Page 673: ...2008K K2 Troubleshooting Guide P N 507298 Rev H Page 669 APPENDIX C BLOOD PUMP ERROR CODES ...