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8 TEST POINTS
8.1 Testing the external power supply (from the welding power
source)
Measure the voltage at contact K13.
The approved value range for the voltage is 37,8 V
AC
± U
AC
± 46,2 V
AC
8.2 Testing the internal power supply voltages
The following test measurements can be made when the motor is not running.
Connect a voltmeter across the following components ( negative to GND) :
Set value Approved value range
Positive connected to K17:1 +60 V 53 V
DC
± U ± 65 V
DC
Positive connected to K1:1 +5 V 4,8 V ± U ± 5,2 V
Positive connected to cathode D206 +12 V 10,5 V ± U ± 13,5V
Positive connected to anode D207 --12 V --13,5 V ± U ± --10,5V
Positive connected to cathode Z402 +15 A 13 V ± U ± 16V
Positive connected to cathode Z401 +15 B 13 V ± U ± 16V
Positive connected to cathode Z403 +15 C 13 V ± U ± 16V
Positive connected to cathode Z404 +15 D 13 V ± U ± 16V
Positive connected to cathode Z1 +12 V
switch
11 V ± U ± 13V
GB
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