Diagnosis procedure
135
Checks :
With the shunt on the ground cable and a tester set to mVdc, check that the machine delivers the required current.
yes
: go on ;
no
: with a tester set to Vdc, measure between the following cables of Hall probe connector J3:
- n. 34 - n. 36 = + 15 Vdc
- n. 37 - n. 36 = - 15 Vdc
yes
: go on ;
no
:
- check correct insertion of the connector on the Hall probe
- perform
power supplies checking procedure
With the machine delivering increasing current values, using a tester set to Vdc, measure between the following
points of board 15.14.254:
CN3/6 - TP3
=
-2.7 Vdc
CN3/7 - TP3
=
from -100 mVdc approx.
to -2,2 Vdc
(for increasing values set via potentiometer)
yes
: go on ;
no
: replace board 15.14.239
(level 2)
Stage 4 : Machine connected to mains.
Front panel selector set to TIG mode.
Close the master switch.
Set a requirement of 120A via the potentiometer on the front panel and perform lift start by placing the electrode
in contact with the piece and lifting the torch.
Checks :
With oscilloscope set to:
TRIGGER
=
ROLL
Time scale
=
100 ms
Amplitude scale =
2 V
Measure on board 15.14.254 :
TP14 - TP3
=
oscillogram no. 6 (shows the moments before and after sparking of the arc)
With oscilloscope set to:
TRIGGER
=
ROLL
Time scale
=
200 ms
Amplitude scale =
500 mV
Measure on board 15.14.254 :
TP11 - TP3
=
oscillogram no.7 (shows the moments before and after sparking of the arc)
yes
: go on ;
no
: replace board 14.60.060
Stage 5 : Set front panel selector to MMA.
Set a requirement of 120A via the potentiometer on the front panel.
Spark the arc
Checks :
With oscilloscope set to:
TRIGGER
=
ROLL
Time scale
=
200 ms
Amplitude scale =
2 V
Measure on board 15.14.254 :
TP14 - TP3
=
oscillogram no.8 (shows the moments before and after sparking of the arc)
With oscilloscope set to:
TRIGGER
=
ROLL
Time scale
=
200 ms
Amplitude scale =
1 V
Measure on board 15.14.254 :
TP11 - TP3
=
oscillogram no.9 (shows the moments before and after sparking of the arc)
yes
: go on ;
no
: replace board 14.60.060
Содержание Genesis 240 TLH
Страница 1: ...REPAIRS MANUAL E N G L I S H Genesis 240 Genesis 240 TLH...
Страница 9: ...Description of machine operation 91 n m k a o q r l c b i p j d s e f g h e FIG 6...
Страница 11: ...Description of machine operation 93 n m k a o q r l c b i p j d s e f g h e FIG 8...
Страница 20: ...102 Description of machine operation n m k a o q r l c b i p j d s e f g h e FIG 16 F1 F2 FIG 17...
Страница 22: ...LAY OUTS OF CARDS...
Страница 23: ...Lay outs of cards 105 Card 15 14 233 Fig 20...
Страница 24: ...106 Lay outs of cards Card 15 14 236 side A Fig 21...
Страница 25: ...Lay outs of cards 107 Card 15 14 236 side B Fig 22...
Страница 26: ...108 Lay outs of cards Card 15 14 236 side C Fig 23...
Страница 27: ...Lay outs of cards 109 Card 15 14 254 side A Fig 24...
Страница 28: ...110 Lay outs of cards Card 15 14 254 side B Fig 25...
Страница 29: ...Lay outs of cards 111 Card 15 14 254 side C Fig 26...
Страница 30: ...112 Lay outs of cards Card 15 14 254 side D Fig 27...
Страница 31: ...Lay outs of cards 113 Card 15 14 192 Fig 28...
Страница 32: ...114 Lay outs of cards Card 15 14 239 Fig 29...
Страница 33: ...Lay outs of cards 115 Card 15 14 240 Fig 30...
Страница 42: ...124 Diagnosis procedure Card 15 14 254 soldering side FIG 35A Card 15 14 254 soldering side FIG 35B...
Страница 58: ...140 Diagnosis procedure J9 connector frontal side FIG 36 Card 15 14 192 FIG 37...
Страница 59: ...Diagnosis procedure 141 FIG 38 Card 15 14 233 FIG 39...
Страница 60: ...142 Diagnosis procedure Card 15 14 254 version 1 soldering side FIG 40A...
Страница 61: ...Diagnosis procedure 143 Card 15 14 254 version 2 soldering side FIG 40B soldering side view...
Страница 62: ...144 Diagnosis procedure Card 15 14 236 FP106 FIG 41...
Страница 63: ...Diagnosis procedure 145 FIG 43 H F 15 14 192 wring diagrama FIG 42...
Страница 64: ...146 Oscillograms Oscillogram 1 Oscillogram 2...
Страница 65: ...Oscillograms 147 Oscillogram 3 Oscillogram 4...
Страница 66: ...148 Oscillograms Oscillogram 5 Oscillogram 6...
Страница 67: ...Oscillograms 149 Oscillogram 7 Oscillogram 8...
Страница 68: ...150 Oscillograms Oscillogram 9 Oscillogram 10...
Страница 69: ...Oscillograms 151 Oscillogram 11...
Страница 73: ...Parts dismantling and re installation procedure 155 FIG 44...
Страница 74: ...156 Parts dismantling and re installation procedure FIG 45...
Страница 75: ...Parts dismantling and re installation procedure 157 FIG 46 FIG 47...
Страница 76: ...158 Parts dismantling and re installation procedure FIG 48...
Страница 79: ...Operating tests and settings 161 Card 15 14 239 FIG 49...
Страница 80: ...162 Operating tests and settings Card 15 14 254 FIG 50...
Страница 81: ...Operating tests and settings 163 FP106 FIG 51...
