NEC NC1600C - Page 108

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4-13
TROUBLESHOOTING
Pump Stop (xxx)
Yes
No
Is there any abnormality between the CPU PWB
and the PJDIV PWB, such as drawing out of the
connector?
Adjust the problem points.
Yes
No
Is there any abnormality between the PJKEY PWB
and the RELAY PWB, such as drawing out of the
connector?
Adjust the problem points.
Look for any damage or the drawing out of the
connector and follow the steps of replacement
work in the order specified below.
RELAY PWB
PJDIV PWB
Liquid cooling unit
CPU PWB