NEC NC1600C - Page 119

“Confidential, Do Not Duplicate without written authorization from NEC.”
4-24
TROUBLESHOOTING
CPU Fail (Mem)
CPU Fail (IO-C)
CPU Fail (IO-A)
Yes
No
Is there any abnormality between the CPU PWB
and the PJDIV PWB, such as drawing out of the
connector?
Adjust the faulty spots.
Yes
No
Is it possible to solve the problem through NEC
software rewriting?
Normal operation.
Replace the CPU PWB.