Wahl Heat-Prober 392AHP, Руководство пользователя

Страница: 37 / 38

Heat-Prober
®
Platinum-RTD Thermometers User Manual
37
700M TROUBLE SHOOTING PROCEDURE
Step Problem Action to be Performed If Correct If Incorrect
13. Check voltage at U1-5. It should be
+0.561V ±0.005V.
Replace U1. Go to Step 16.
14. Check voltage at U2-10. It should be
+1.458 ±0.005V.
Go to Step 19.
Proceed to
next step.
15. Check voltage at U2-5. It should be
+0.578V ±0.005V.
Replace U2.
Proceed to
next step.
16.
Check voltage at wire harness at pin 3
on circuit board. It should be +0.460V
±0.005V.
Proceed to
next step.
Go to Step 19.
17.
Check voltage at wire harness at pin 1
on circuit board. It should be +0.578V
±0.005V.
Go to Step 19.
Proceed to
Next Step.
18.
Check for +5 volts, check R1 through
R6, R12 and R13. Also check harness
for loose or broken wires.
Proceed to
next step.
Replace bad
component. If
problem still
exists, proceed
to next step.
19.
Return unit to factory for repair.