Troubleshooting
6-21
Part 1120277_01
E 2012 Nordson Corporation
Control panel is not illuminated
T.1
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--
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Is there power at terminal
block XT1 on the
expansion board?
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Is the power disconnect
switch that is serving the
melter turned on?
Isthecorrectvoltageplug
securely attached to
connectors X1/X2 on the
expansion board? Refer to
Table 3-3, S ection 3,
Installation.
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Is there power at terminal
XT1 on the main board?
Check the plant wiring
between the disconnect
switch and the melter.
Turn the disconnect switch
on.
Replace/secure the voltage
plug.
Check the harnesses between
XT3 on the expansion board
and X1 on the relay board and
between X2 on the relay
board and XT1 on the main
board.
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Have fuses F3/F4 on the
main board blown?
ReplacebothfuseF3and
fuse F4.
Replace the main board.
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Is the power on the plant
side of the disconnect
switch that is serving the
melter?
Check/repair the plant
wiring.
Go to T.1.1
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Is indicator DS4 on the
main board illuminated?
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