Tweco 42 CutMaster Service Manual - Manual (Page 53)

TROUBLESHOOTING CUTMASTER 42
Manual 0-5171 6-17 Troubleshooting
6.16 Main Circuit Description
!
Turn off power and disconnect mains supply plug from receptacle before working on the unit. Allow two minutes for
capacitors to discharge after disconnection from mains supply voltage.
PFC Control Chip
AC
AC
V+
V-
U1
DC+
DC-
DC+
DC-
dc+
dc+
Art # A-10249