NEC AccuSync LCD71VM User Manual

6-10
7. Checking the Scaling IC Movement
Is there +3.3V supply on U405 pins 14, 30, 90, 104, 106, 108, 110, 113,115, 124, 128, 132,
136, 143, 157. Is there +2.5V SUPPLY ON U405 pins 20, 43, 46, 59, 61, 63, 74, 77, 79, 98,
117, 119, 138.
NG
OK
Is 14.318M Hz clock input to U405 pins 102,
103 at TTL level?
NG
OK
OK
Proceed section 8 "No Power On".
Is 14.318M Hz clock output from X401 at TTL level?
Failure point
X401 failure
U405 failure.

NEC AccuSync LCD71VM Specifications

General

Brand	NEC
Model	AccuSync LCD71VM
Category	Monitor
Language	English