Tweco 400 MST Arc Master - Manual (Page 63)

400MST
9
ADVANCED TROUBLESHOOTING
9 – 26
9) Disconnect two connectors from PCB3 (WK-5548).
2.4.4 PCB4 (WK-4819) 
1) Remove the side cover. [Reference page: 9-1]
2) Disconnect three connectors. Remove two screws and disconnect three connectors, and then remove
PCB4 (WK-4819).
2.4.5 PCB5 (WK-5696) 
1) Remove the side cover. [Reference page: 9-1]
2) Remove PCB6 (WK-5688). [Reference page: 9-27]
3) Remove two screws and disconnect three connectors. Remove PCB5 (WK-5696).
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