Graco RoadLazer RoadPak Repair Manual page 35

Programmable Skipline Controller
PROBLEM
Controller not turning on
Controller shutting down or cutting
out during striping
System Delay not turning on
Controller not displaying MPH
(KM/H), or readout is erratic
System Delay actual distance not
precisely matching programmed
distance
3A5385A
CAUSE
Fuse, battery, or wiring
Battery or wiring
System not configured for striping
or is shut off
Gun arm sensor or sensor wiring
Programmed distance needs fine
tuning
SOLUTION
1. Check fuse located next to 12V
RoadLazer battery.
2. Check battery voltage. Charge or
replace if necessary.
3. Inspect wiring at battery for corrosion.
Inspect control cable for damage.
1. Check battery voltage. A weak battery
can drop voltage low enough to cause
intermittent shut down.
2. Check wiring.
3. Ground control box to vehicle chassis.
1. Remove gun arm from stowed position,
and start up engine. System delay will
not turn on unless you are ready to
stripe.
2. Go to Quick Setup and set System
Delay to ON (manual 3A5387, page
28).
1. Check sensor (24) located on gun arm
wheel assembly. Set sensor approxi-
mately 1/8 in. (3 mm) from target plate.
2. Check sensor head for damage.
Replace if damaged.
3. Check sensor wiring by removing sole-
noid valve cover (19).
1. This is usually true. Get it as close as
possible, then spray one additional test
line and try to hit the start point.
2. Measure difference between start point
and where paint guns turn on. If paint
guns turn on before start point, add
measured difference to current system
delay distance. If paint guns turn on
after start point, subtract measured dif-
ference.
Troubleshooting
35