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5.7 Troublesh ootin g GU IDEA. Power Light (PL1) does not coe on.1. Visually inspect the machine for any damage.2 . Check if the cooling fan is running. If not, then check the following :a. Check if the machine power cord is plugged to the input power receptacle.b. Measure the input power at the receptacle. If not present, then check the wall disconnect switch and i

fuses.c. Check !use "!1#. If fuse is ok, then check the input circuit breaker "C$1# for proper operation. %eplacif defecti&e.' . If abo&e items check () , the problem is internal. *end unit to an +uthoried %epair *tation for repaia. If the cooling fan is running, then measure &oltage between pins -211 and -21/ of the control board"should be 110 V+C#. If there is no &oltage, then replace transformer 2.b. If the &oltage is present, then the pilot light may be burnt out.!. "o Air #low1. Check air inlet supply. nit re3uires '24 C!5 at 60 psig.2 . Check air hose and connections. ighten if leaking.' . 7oes air flow when 8air test9 switch is in test positiona. If not, check torch consumables, replace if necessary.b. If abo&e items check () , the problem is internal. ake unit to an +uthoried %epair *tation for repair

$. The Power light is on% but nothing h&''ens when the torch switch is de'ressed. #&ult light does n&cti&te.NOTE: Unplug high frequency connection before attempting to work on this problem.1. Check the -ilot +rc fuse "!2# located on the rear panel. +n open fuse will indicate a short in the torchthe fuse is allright, then check the following:a. ;ith the machine power on, depress the torch switch. (n the control board the

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