NEC NC1600C Service Manual page 111

DLP CommE Fail
Is there any abnormality between the CPU PWB
and the ETHER PWB, such as drawing out of the
LAN connector?
Yes
Is there any abnormality between the ETHER PWB
and the MOTHER PWB, such as drawing out of
the LAN connector?
Yes
Is there any abnormality between the ETHER PWB
and the PJDIV PWB, such as drawing out of the
connector?
Yes
Follow the steps of replacement work in the order
specified below.
ETHER PWB
PJDIV PWB
CPU PWB
INTERFACE board
"Confidential, Do Not Duplicate without written authorization from NEC."
TROUBLESHOOTING
No
No
No
4-16
Adjust the faulty spots.
Adjust the faulty spots.
Adjust the faulty spots.