Nordson Encore - Rear Panel Components

Troubleshooting
4-6
Part 1618871−01
 2020 Nordson Corporation
Backplane
See Figure 4-3 and Table 4-2. Use the backplane LEDs to help diagnose
problems.
Table 4-2 Backplane LEDs
LED Function LED
Color
LED State Fault Correction
−12V Power Green Normal: ON
Fault: OFF
Check +24 V on P4 (+24 V LED ON).
Check fuse F1.
Check jumpers J12 and J13 are in place.
Remove all gun cards. If +/−12 V LED turns ON,
replace one gun card at a time.
+12V Power Green Normal: ON
Fault: OFF
+24V Power Green Normal: ON
Fault: OFF
Check +24 V on P4 (+24 LED ON).
Check power supply PS1, DC OK green LED ON.
Check power supply PS1, AC OK green LED ON,
LED OFF, refer to PS1 in troubleshooting section
Power Supplies on page 4-8.
+5V Power Green Normal: ON
Fault: OFF
Check +24 V on P4 (+24 V LED ON).
Check fuse F2.
Check jumpers J11 and J14 are in place.
Remove all gun cards. If +5 V LED turns ON, replace
one card at a time.