Nordson AltaBlueA4TP - Page 153

Troubleshooting
6-31
Part 1107600_03
 2014 Nordson Corporation
T.1.1
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Is the green power LED on
the CPU board
illuminated?
See Figure 6‐4.
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−
Is the voltage across TP7
(+) and TP2 (-) on the main
board between 4.75 and
5.25 VDC?
See Figure 6‐4.
Is the voltage across TP2
(+) and TP4 (-) on the CPU
board between 4.75 and
5.25 VDC?
See Figure 6‐4.
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Is the red CPU fault LED
illuminated?
See Figure 6‐4.
Replace the main board.
P/N 1078624
Check the ribbon cable or
replace the CPU board.
CPU ‐ P/N 1028325
Replace the CPU board.
P/N 1028325
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Does changing the main
board correct the problem?
P/N 1078624
Secure or replace the
cable.
P/N 1026662
Is the ribbon cable
between the main board
and the CPU board loose
or visibly damaged?
See Figure 6‐4.
Secure or replace the
cable.
P/N 1026662
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−
Contact Nordson for
technical assistance.
Replace the CPU board.
P/N 1031179
Does changing the CPU
board correct the problem?
P/N 1028325
Stop.
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Is LED DS15 on the main
board illuminated?
See Figure 6‐4.
Replace the main board.
P/N 1078624
+
−
Is the ribbon cable
between the main board
and the CPU board loose
or visibly damaged?
See Figure 6‐4.
Control panel is not
illuminated >
Disconnect switch is on >
DS4 is illuminated