JLG 20VP (3120728) Service Manual - Manual (Page 62)

SECTION 3 - TROUBLESHOOTING
3-2 – JLG Lift – 3120728
LED Indicator Strip
When the machine is powered up, all function inputs should be open. If any function is active on power up, all functions will
be made inoperative and a fault will be indicated at the platform controller box LED strip.
This strip has ten (10) green LEDs and is located on the platform controller box between the function touch pad buttons. See
Figure 3-1.
Fault Code Reference Tables
Their are two types of fault codes which can occur to indicate a problem with the machine, these are WARNING codes and
ERROR codes.
The fault codes can occur either at machine power up or during operation of the machine.
WARNING Codes
(See Table 3-1.)
The WARNING will be indicated for 4 seconds and will be repeated every minute if the problem is not corrected. An audible
three beeps indication is given at the beginning of each warning displayed. WHEN A WARNING CODE IS INDICATED THE
MACHINE WILL USUALLY FUNCTION, however some machine functions may be disabled. See Table 3-1. for explanation of
WARNING codes.
ERROR Codes
(See Table 3-2.)
An ERROR is indicated by an audible beep and continuously fast flashing LED bar. The number of fast (rapidly) flashing
LEDs indicate the particular error message. AN ERROR CONDITION WILL DISABLE THE MACHINE until the problem is cor-
rected. The ERROR message is only reset by turning off the system, however if the problem has not been corrected the
ERROR will be indicated again at machine power-up. See Table 3-2. for explanation of ERROR codes.
NOTE: As shown in the following WARNING and ERROR code tables, a specific number of LEDs flashing can indicate more
than one WARNING or ERROR code. These tables suggest specific areas to check as the probable cause for the fault
code which has occured. The fault code number is shown in the first column of the table and the number of LEDs flash-
ing on the platform controller LED strip is shown in the second column of the table.
Figure 3-1. LED Battery/Fault Code Indicator Strip
on Platform Controller Box.
LED
INDICATOR
STRIP