Challenge SPARTAN 185, Service Manual

Page: 27 / 108

3.0 Maintenance Guide
26
3.6 Troubleshooting
Problem Possible Cause Solution
1. The machine will not
power up – no display,
no line light, and
machine will not cycle.
a) Power cord is disconnected.
b) Main power switch/circuit
breaker is off.
c) Blown fuse on main circuit
board.
d) Disconnected wires inside
machine.
e) No power at electrical outlet.
a) Plug in cord.
b) Turn power switch/circuit
breaker on.
c) Check fuse, replace if blown.
d) Check for wires that are
disconnected from main circuit
board, power cord, etc.
e) Check outlet. Repair or use
another outlet.
2. Display and line light are
on, but machine will not
cycle.
a) Front guard is open.
b) Front guard has not been
opened and closed since
previous cut cycle.
c) Front guard switch needs
adjustment.
d) Knife limit switches need
adjustment.
e) Clamp motor breaker switch
has tripped.
f) Knife/clamp sequence needs
adjustment
g) Disconnected wires inside
machine.
h) Faulty cut button.
i) Faulty main circuit board.
a) Close front guard.
b) Open and close front guard.
c) See Section 3.5.9 Front Guard
Switch Adjustment, page 20.
d) See 3.5.12 Knife-Up Limit
Switch Adjustment, page 22
and 3.5.13 Knife-Down Limit
Switch Adjustment, page 23.
e) Reset breaker switch located
on outside of electrical panel.
f) See 3.5.10 Knife/Clamp
Sequence Adjustment, page
20.
g) Check for wires that are
disconnected from main circuit
board, cut buttons, etc.
h) Check continuity of cut buttons
at circuit board connection.
Replace if necessary.
i) Replace main circuit board.
3. Power is on, but
backgauge display is
blank.
a) Disconnected wires inside
machine.
b) Faulty display circuit board.
a) Check for wires that are
disconnected from main circuit
board, display circuit board,
etc.
b) Replace display circuit board.
4. Backgauge display
shows: “----“.
a) Backgauge has not been
preset.
a) Preset Backgauge by bringing
backgauge to front of machine
(refer to Operator’s Manual).
5. Power is on, but line light
does not light up.
a) Disconnected wires inside
machine.
b) Faulty line light circuit board.
a) Check for wires that are
disconnected from main circuit
board, line light circuit board,
etc.
b) Replace line light circuit board.
6. Backgauge display is
inaccurate.
a) Backgauge accuracy needs
adjustment.
b) Encoder malfunction.
c) Faulty display circuit board.
a) See Section 3.5.2 Backgauge
Accuracy Adjustment, page 14.
b) Check connection between
encoder and backgauge lead
screw at rear of machine, or
replace encoder.
c) Replace display circuit board.