NEC NC1600C Service Manual page 99

Lens control is impossible.
Is it possible to make adjustments with the remote control for signal selection and such items other than
those related to the lens?
Yes
Is it possible to adjust FOCUS and ZOOM?
Yes
Are the connectors of POJ100 and POSIO correctly inserted in the PJDIV PWB?
Yes
Is the power (12V) supplied to POJ100 #3 and #4 of the PJDIV PWB?
Yes
Is the power (3.3V) supplied to POJ100 #8 of the PJDIV PWB?
Yes
The MOTOR PWB is faulty.
"Confidential, Do Not Duplicate without written authorization from NEC."
TROUBLESHOOTING
No
Check the remote control and its cable.
No
Check the LENS connector.
No
Try to insert the corresponding connectors again.
No
Check 12V of the DIV PWB.
No
Check IC8001 of the PJDIV PWB and also peripheral circuits.
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