CHAMPION USN10 - Manual (Page 62)

5.3 Component Repair and Replacement
(Cont)
Solid State Circuit Boad Jumpers
JB-1, JB-2, JB-3
Circuit Board Location
The circuit board is located in the lower right corner of
the remote control cabinet.
Factory Position of Jumpers
All of the jumpers are set in the ON position
by the supplier.
NOTE:
The service technician must change the jumper
settings for proper operation of the machine.
The proper jumper positions are:
JB-1 OPEN
JB-2 CLOSED
JB-3 OPEN
The photograph on the right shows jumper
JB-1 being set to the open position.
The remaining jumpers must be set according
to information above.