Tweco CutMaster 101 with SL100SV User Manual Page 78

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SERVICE 5-14 Manual 0-4642
5
Locate your symptom below:
A. Main power line fuses blow as soon as main disconnect is closed
1. Input power cable installed incorrectly or defective power cord.
a. Refer to Subsection 5.07 and check that the input power cable is not defective or installed incorrectly.
2. Main input contactor (W1) stuck.
a. Check contactor. Replace if stuck.
B. Main power line fuses blow immediately after the ON/OFF Switch is turned on.
1. Faulty Input Diode
a. Test Input Diode per Subsection 5.08-C; repair as necessary.
C. Fans do not operate; AC indicator
OFF
1. Front Panel ON/OFF switch in OFF position
a. Place switch to ON (up) position.
2. Main power disconnect open
a. Close main power disconnect.
3. Torch is not properly connected to Power Supply.
a. Check torch connections to Power Supply. Tighten or adjust as needed.
4. Shield cup not fully tightened on torch head.
a. Check shield cup for proper installation. Do not overtighten.
5. Main power line fuses blown
a. Replace main power line fuses.
Art # A-03658
INPUT
DIODE
TP1
TP4
J24-3
J32
J29
J18-5
J23-1
J33
J27
J43
J34
J11
J15
FUSE
J23-3
J18-6
J15-1
J15-6
J15-5
J15-2
J24-1
Main Printed Circuit Board Layout (logic board not shown)
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