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SCR-140(A4)-en 99.3.15 11:37 AM ˘ ` 13
When installing is impossible
Connect power cable and I/F cable
between PC and CD-ROM
Does INSTALL message appear?
Is IC301 46PIN 5V when main power
turns on?
Is IC201 95PIN 5V?
Does X401 oscillate?
Do the digital signal of IC301 and IC401
communication pattern change from 0V to
IC401, CN701, is normal
communication singnds?
Connet 1/F cable
Y
N
Y
N
Y
N
Y
N
Y
N
5V?
Y
N
Y
Normal
Check main power-end and initial state
Check soldering of C401, C402
Check the soldering of IC401, IC301
and pattern open/short
Check the soldering of Damping
Resister and IC, I/F Wafer
20
13
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