NEC NC1600C Service Manual page 121

Lens Fail
Is the potential at POPOJ100#8 on the PJDIV
PWB maintained at 3.4V (± 0.1V)?
Yes
Check for disconnections and breakage of the
POPOJ100 and POSIO on the PJDIV PWB.
Yes
Replacement work shall be carried out in the
sequential order as specified below.
PJDIV PWB
MOTOR PWB
CPU PWB
"Confidential, Do Not Duplicate without written authorization from NEC."
TROUBLESHOOTING
Check for disconnections and breakage of the
No POPS (or POPSM1) and POPSM3 on the PJDIV
PWB. Replace them, as required.
Adjust disconnections of the POPOJ100 and
No POSIO on the PJDIV PWB. Replace them, as
required.
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