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Do System Tests to Identify Defective Components
5
Powermax65/85/105 SYNC
Troubleshooting Guide
810430
107
4.
At J21or J18 on the power PCB, do a check for continuity on pin 1 (red) and pin 2 (black). Refer
to
. Is there continuity on both pins?
If yes, there is possibly a problem with the wiring harness for the machine interface
receptacle. Replace the machine interface receptacle with voltage divider PCB assembly
(228697 for Powermax65/85 SYNC; 528045 for Powermax105 SYNC).
If no, there is possibly a problem with the power PCB. Replace the power PCB.*
* The problem will more often be with the power PCB. In unusual situations, there can be a problem with the
DSP PCB. If possible, install a different DSP PCB that is known to operate correctly before you replace the
power PCB to see if the problem goes away.
Figure 25
– Machine interface pins for plasma start on the power PCB
BLK
RED
J12 / J15 / J11
J20 / J17
BLU
ORG
VIO
YEL
WHT
RED
BRN
GRY
BLK
J21 / J18
RED
BLK
WHT
GRN
1
2
8
7
6
5
4
3
2
1
9
1
2
3
4
RED
J21
ORG
J20
J12
B
R
J4
J2
J1
J3
2
J
J6
J5
J2
J1
J22
RED
J18
ORG
J17
J11
B
R
Powermax65/85 SYNC
Powermax105 SYNC
Содержание Powermax105
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Страница 132: ...Do System Tests to Identify Defective Components 5 132 810430 Troubleshooting Guide Powermax65 85 105 SYNC ...
Страница 172: ...How the Plasma Power Supply Operates 7 172 810430 Troubleshooting Guide Powermax65 85 105 SYNC ...
Страница 174: ...System Diagrams 8 174 810430 Troubleshooting Guide Powermax65 85 105 SYNC ...
Страница 180: ...System Diagrams 8 180 810430 Troubleshooting Guide Powermax65 85 105 SYNC ...