No Burning At R10 And R11/Isolate Heater Switch - Fresenius Medical Care 2008T Troubleshooting Manual

T- 2.6.5 NO BURNING AT R10 AND R11 / ISOLATE HEATER SWITCH
Set your volt meter to RESISTANCE (Ω).
A)
B) Remove the Power Control board from its white clips.
C) Lay the power supply panel down to see the rear (solder) side of the board.
PER the Figure below
D)
Measurement #1: BETWEEN ST13 AND ST7. Good = less than 2.0 Ω.
Measurement #2: BETWEEN ST5 AND ST4. Good = less than 2.0 Ω.
E) BOTH measurements LESS THAN 2.0
Yes BOTH LESS than 2.0 Ω! The Heater Switch is OKAY! See procedure number
(page 298).
One OR both MORE THAN 2.0 Ω! The Heater Switch is bad.
No
, TWO (2) measurements:
Ω
?
2008T Troubleshooting Guide
P/N 490292 Rev. A
T- 2.6.6
Page 297