JLG X20JP - X600AJ Service Manual - Manual (Page 235)

SECTION 6 - JLG CONTROL SYSTEM
3121623 – JLG Lift – 6-19
ECM1 (MASTER BOARD BACK MODULE) LED
CODE :
With LED permanently ON
DL1 green LED ON: power +5V to safety channel “A” CPU
DL2 yellow LED ON: safety relay for tracks functions channel
“A” CPU closed
DL3 yellow LED ON: safety relay for aerial functions channel
“A” CPU closed
DL4 green LED ON: power +5V to safety channel “B” CPU
DL5 yellow LED ON: safety relay for tracks functions channel
“B” CPU closed
DL6 yellow LED ON: safety relay for aerial functions channel
“B” CPU closed
Figure 6-41.