Power and GND of IC201
are normal?
5V:54,74,95 pin 3.3V:5,12,15,16,19, 33,
36,59,78,89,116,138,141,144,160pin
OV:3,8,9,13,17,22,39, 61,66,75, 83,105,110,
122,127,149,154,171pin
IC201 40 pin changes from 0V to
5V at power connection?
Digital signal is inputted into
IC201 41,42,43,44,46,47,48,49,
50,51,52,53pin?
IC201 158pin(FOO) output.
(Focus up.down driving signal)
Check IC201 soldering For no error,
see ÔPower and initial state checkÕ
See 'Power and initial state check'
Check the soldering of CN101 and
check pattem between
CN101 and IC401
Replace of IC201
N
N
N
N
Y
Y
Y
Y