Tweco 400 MST Arc Master - Manual (Page 73)

400MST
9
ADVANCED TROUBLESHOOTING
9 – 36
2.4.18 Thermistor (TH2) 
1) Remove the side cover. [Reference page: 9-1]
2) Remove PCB17 (WK-5699).
3) Cut off three snap bands and disconnect one connector. Remove one screw and remove the thermistor (TH2).
 When replacing the thermistor with a new one, apply an oil compound (SHINETSU SILICONE G-747
or equivalent) evenly to the base.
2.4.19 Fan (FAN1) 
1) Remove the side cover. [Reference page: 9-1]
2) Remove four screws and open the rear cabinet.
3) Cut off one snap band and disconnect one connector.
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CN11