2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
Page 292
T- 4.3.0 PIN 6 LESS THAN 1.0 VOLT / ISOLATE FOR A ‘SHORTED’ HEATER TRIAC
a) Turn the machine OFF and
UNPLUG
it!
CAUTION!
Electrocution hazard if not unplugged!
b) Figure right, lay the Power Supply’s rear panel down.
c) Remove the Power Control board from the white plastic
clips to access the board’s rear (solder) side.
d)
Set the
volt meter to resistance (Ω)!
e) As seen in the Figure below, measure BETWEEN
connectors ST 8 and ST 11.
f)
Figure right, reading the meter’s numeric AND
units display, TWO (2) possible scenarios:
1)
IF MORE THAN 10 Million ohms (10.0
MΩ
), possibly “OL”:
IMPORTANT
!
ENSURING the
Heater Switch REMAINS ON, see procedure number
(page 293).
2) IF LESS THAN 10 Million ohms (10.0
MΩ
) most likely WAY less (example: 300
Ω
):
See parts a
AND b below:
a) Return NTC #2 to the
1
st
position from the left, “CON-NTC”.
b) TWO (2) possible bad components:
1)
Bad Triac
*
OR;
2)
Bad Power Control Board.
*
To locate the Triac trace the brown and blue wires connected to ST8 and ST11 to it!
CAUTION!
The Triac’s wires are position sensitive! Plugging into the wrong terminal can
damage the Power Control board or the new Triac
Figure 52 – Solder Side Power Control Board / Triac Wiring
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 ...
