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7-9
Samsung Electronics
Maintenance & Troubleshooting
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7-4-5 CIS LED Not Lit
START
See chart 7-4-4
Load document in
feeder
Works properly?
Normal?
+5 V ?
CIS LED lights
Check +5V, +12V
(P1-16, 17, 18, P1-1
in the main b'd)
Replace the power
supply
Replace CIS
Replace the main b'd
Check PIN27 of
U25
END
Press the COPY
button
Document fed?