Victor CUTMASTER 102, Руководство по обслуживанию

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CUTMASTER 102
SERVICE Manual 0-4998
5-16
Negative / Plasma Lead
4 Torch Switch
3 Torch Switch
2 PIP
1 PIP
Pilot Lead
Art # A-08124
If a short is found, the problem is in the torch and
leads assembly. Remove the torch head from the
leads and check the leads and head to determine
which is defective.
5. Low primary input power or missing phase
a) Measure primary input voltage between L1, L2 &
L3 on W1 contactor under load.
6. Defective W1 contactor.
a) Check per section 5.11-C.
b) Check voltage into and out of W1 contactor under
load. Replace W1 if voltage drop is found.
7. Shorted Sync Cable connected between J14 on Main
PCB 1 to J9 on 40A PCB 5.
a) Check continuity.
8. Open connection between J12 on Main PCB 1 to J1 on
Capacitor PCB 2.
a) Check continuity.
9. Open connection between J2 on Capacitor PCB 2 to J3
on 40A PCB 5.
a) Check Continuity.
10. Open connection between J2 on Main PCB 1 to J1 on
Logic PCB 3.
a) Check continuity.
11. Defective Logic PCB 3.
a) Measure Logic PCB 3 CUR_SET signal between
J1-6 to TP1. If no voltage, replace PCB 3.
b) Measure Logic PCB 3 for SHDN signal between
J1-10 to TP1. Normally 12VDC signal should drop
to less than 1VDC when START signal is active. If
voltage does not drop, replace PCB 3.
c) Measure Logic PCB 3 for the corresponding signals
to measure less than 2VDC:
For 230VAC - Signal /230_IN between J1-5 to TP1
For 460VAC - Signal /460_IN between J1-4 to TP1
If corresponding signal measures 12 VDC, replace the
Logic PCB 3
12. Defective Main PCB 1.
a) Measure for approximately 325VDC on Capacitor
PCB 2 between MTH 1 to MTH 7 under load. If
voltage is not present replace PCB 1.
13. Defective Capacitor PCB 2.
a) Disconnect plug from J2 on Capacitor PCB 2 and
measure between J2-1 to J2-2 for 12VDC. If voltage
is low or zero, replace PCB 2.
14. Defective 40Amp PCB 5.
a) Isolate the 40A PCB 5 by disconnecting plug from
J4, the Sync Cable from J9 and the wire from
terminal CHOKE1. Supply a START signal. If the
FAULT is cleared, replace PCB 5.
15. Defective Main PCB 1.
a) Replace PCB 1.
Main Contactor does not close after two seconds
of turning the ON/OFF switch to ON
1. Defective contactor
a) Measure for 24VAC on contactor coil. If present,
replace Contactor.
2. Defective Logic PCB
a) Measure for /W1_ON signal to go low at Main PCB
between J2-9 to GND1
3. Ribbon cable from Logic PCB J1 connector to Main
PCB J2 not properly connected or open wire.
a) Check the connection
4. Defective Main PCB 1.
a) Measure for 24VAC supply between J6-1 to J6-2
on Main PCB
Fans MOT 1-3 comes ON but plasma gas does not
flow after START signal is active
1. Defective solenoid
a) Measure for 12VDC between J5-1 to J5-2.
2. Ribbon cable from Logic to Main PCB not properly
connected or open wire
a) Check the connection
3. Defective Main PCB