LG CED-8083B Service Manual page 22

Writing Part Check.
Refer "Laser is abnormal".
Load tray with CD-R/RW Disc.
Run the Writing Tool
(Easy CD Creator).
Run the Writing with Tool
(Easy CD Creator).
The blink
alternates between LED1 and
LED2 when Writing start (OPC
operation)?
•
YES
•
Does Writing finish without
any error?
YES
Is the written file read
normally?
YES
YES
OK
NO
Check the connection between
IC301 pin 2, 7 and LED.
Check and replace the
LED803, 804.
NO
NO
Check the connection of IC201 pin 187
and replace the IC201.
Do the IC301(MICOM)
pin 2 and pin 7 output toggle
signals during Writing?
YES
NO
NO
•
Check the communication lines
between IC301 and IC201.
•
Check and replace the IC301.
Eject Tray.
Go to "ALPC Logic Circuit Check".
Is the re-written file readed
normally?
NO
Is ROPCSH input signal
Pulse when CD-R writing?
(IC401 pin 43)
YES
Go to "BETA Measurement
Circuit Check".
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