Nordson ProBlue P4 - Page 143

Troubleshooting
6-25
Part 1024496_06
 2014 Nordson Corporation
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Starting conditions:
Control panel is not illuminated >
Disconnect switch is on >
DS4 is illuminated
T.1.1
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Is the voltage across TP2 and
TP4 on the CPU board between
4.75 and 5.25 VDC?
See Figure 6-1.
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Is the green power LED on the
CPU board illuminated?
See Figure 6-1.
Is the red CPU warning LED
illuminated?
See Figure 6-1.
Replace the CPU board.
P/N 1028325.
Replace the main board
assembly.
P4/P7 − P/N 1028322.
P10 − P/N 1028323.
Contact Nordson for technical
assistance.
Secure or replace the ribbon
cable.
P/N 1018283.
Replace the CPU.
P/N 1028325.
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Isolate the failed control
component.
Refer to DP.1.
Is LED DS5 on the main board
illuminated?
See Figure 6-1.
Is the ribbon cable between the
main board and the CPU board
improperly aligned, loose or
visibly damaged?
See Figure 6-1.