Ditch Witch JT920 - Troubleshooting the Strike System

JT920/JT920L - MAINTENANCE 141
TROUBLESHOOT STRIKE SYSTEM
JT920/JT920L - MAINTENANCE 141
TROUBLESHOOT STRIKE SYSTEM
TROUBLESHOOT STRIKE SYSTEM
When strike system detects a problem, an error code will be
displayed. Anytime this happens, press self test button to retest.
If error code is still displayed and does not appear in this chart,
have control module checked or replaced.
Other problem situations and their possible causes and solutions
are listed in the chart below.
Problem Possible cause Possible solution
No lights or
readings showing
after drilling unit
key has been on
at least one
minute
Problems in startup Push Status button. If
problem goes away, retest
strike system
No power to strike system
control module
Check drilling unit electric
system
Check that harness from
drilling unit to control
module is connected
Check that cable from
drilling unit carries more
than 10 volts
Defective control module Have control module
checked or replaced
Screen is blank Strike system is not getting
adequate power from
drilling unit
Check drilling unit electric
system
Check that harness from
drilling unit to control
module is connected
Check that harness from
drilling unit carries more
than 10 volts
Defective control module Have control module
checked or replaced
System OK light
is on, but battery
power light is off
Strike system is not getting
adequate power from
drilling unit
Check drilling unit electric
system
Check that harness from
drilling unit to control
module is connected
Check that harness from
drilling unit carries more
than 10 volts
Defective control module Have control module
checked or replaced
TROUBLESHOOT STRIKE SYSTEM
When strike system detects a problem, an error code will be
displayed. Anytime this happens, press self test button to retest.
If error code is still displayed and does not appear in this chart,
have control module checked or replaced.
Other problem situations and their possible causes and solutions
are listed in the chart below.
Problem Possible cause Possible solution
No lights or
readings showing
after drilling unit
key has been on
at least one
minute
Problems in startup Push Status button. If
problem goes away, retest
strike system
No power to strike system
control module
Check drilling unit electric
system
Check that harness from
drilling unit to control
module is connected
Check that cable from
drilling unit carries more
than 10 volts
Defective control module Have control module
checked or replaced
Screen is blank Strike system is not getting
adequate power from
drilling unit
Check drilling unit electric
system
Check that harness from
drilling unit to control
module is connected
Check that harness from
drilling unit carries more
than 10 volts
Defective control module Have control module
checked or replaced
System OK light
is on, but battery
power light is off
Strike system is not getting
adequate power from
drilling unit
Check drilling unit electric
system
Check that harness from
drilling unit to control
module is connected
Check that harness from
drilling unit carries more
than 10 volts
Defective control module Have control module
checked or replaced