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70
SYMPTOM
Upper Display does
not light up.
Check
position of
Safety Key.*
YES
Check for 120 VAC
between points
NO AC 1. Check fuse on
motor control
13 and 14 on
terminal
block.
board,
replace if
necessary
YES A. Check 20
amp in-line
fuse
(Mounted to motor pan) *
2. Check for loose
connections
on terminal
block,damaged
line
cord or wall
outlet for
voltage.
Check for 9 VDC
between points
NO DC 1. Check that
all
connections
5 and 6 on
terminal
block.
on terminal
block are
tight.
6 and 7 on
terminal
block. *
YES 2. Replace 9 VDC
power supply.
Check for 9 VDC
between pins 1
NO DC Check
connections
between
and 2 on display
board connector
upper board
and lower
(Red and
Green wires).
components
(wiring
harness)
YES
Replace
display
board.
(#70130 Sprint 1/
#70130-PWM Sprint 2)