
Trouble Shooting Guide
Raven Industries Technical Services
Phone# 800-243-5435
1. No Display lights with power ON.
Check fuse on back of console.
Check battery connections.
Check operation of POWER ON/OFF switch.
Return console to your dealer to replace processor
board assembly.
2. All keyboard lights on at same time.
Return console to your dealer to replace processor
board assembly.
3. A digit cannot be entered via keyboard.
Return console to your dealer to replace face plate
sub-assembly.
4. An indicator light on key will not illuminate.
Return console to your dealer to replace face plate
sub-assembly and /or processor board assembly.
5. Console displays flashing “CAL” whenever
vehicle engine is started.
Check battery voltage and battery connections.
Install stand-by 9-v alkaline battery in box at rear of
console, (Duracell MN1604 or Eveready 522).
Install CB radio suppressor kit on vehicle’s ignition
system.
6. Console displays flashing “CAL” whenever
master switch is turned ON or OFF.
Check battery voltage and battery connections.
Obtain electrical noise suppressor from CB radio
shop and install on boom solenoid valves.
7. Console displays flashing “CAL” whenever
speed is changed.
Check battery voltage and battery connections.
Check for bad spark plug wires with engine analysis
computer.
Obtain electrical noise suppressor from CB radio
shop and install on spark plugs and generator.
Install grounding strap from engine hood to chassis.
8. “TIME” function is inaccurate or drifting.
Return console to dealer to replace processor board
assembly.
9. One display digit has one or more missing
segments.
Return console to dealer to replace LCD display
board assembly.
10. Speed display “0”.
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Check speed sensor cable connector and plug on
back of console for lose pins.
Clean pins and sockets on speed sensor cable
connectors.
If no extension cable is used, replace speed sensor
switch assembly.
If 24-foot speed sensor extension cable is used. See
Appendix 4.