Thermal Arc 201 TS Service Manual page 49

TROUBLESHOOTING
6. Measurement of In Rush Resistor R1.
Set multimeter to Ohm mode. Ohm reading should be 4Ω±5%.
If reading is not 4ohms within ±5%, replace Resistor R1.
7. Power Switch S1 Continuity Check
!
Read and follow safety information in Section 6.02 before proceeding.
1. ON/OFF switch
Place ON/OFF switch in ON position. Measure the two top terminals for continuity. Then check the two bottom
terminals for same result. If either test is faulty, replace ON/OFF switch.
Manual 0-5148
Positive Probe
Measure Point 17 Measure Point 18
6-7
THERMAL ARC 161STL, 201TS
Negative Probe
Art # A-09854_AB
1
Troubleshooting