LG CED-8042B Manual page 62

Writing Part Check.
Go to "Laser is abnormal"
Load tray with CD-R or RW Disc.
Run the Writing Tool
(Easy CD Creator).
Run the Writing with Tool
(Easy CD Creator).
Does the LED1, LED2
Toggle (on/off) when Writing start
(OPC operation)?
YES
Check the cold soldering for
IC204 (74VHC374) pin 15,
R337, Q302, R334, LED2.
Does finished the writing
without Error?
YES
Is the written file read
normally?
YES
OK
NO
Does the IC204 (74VHC374)
pin 15 Toggle (on/off) during
Writing?
YES
NO
NO
Check the cold soldering for IC614,
R274, IC209 pin 164 and then replace
IC614, IC209.
Go to <Picture 9>
NO
Check the cold soldering for IC204
(74VHC374) and then replace IC204.
Check communication line between
IC204 and IC202 (MICOM).
Eject Tray.
Go to "ALPC Logic Circuit Check".
YES
Is the re-written file read
normally?
NO
NO
Is the IC614 pin 7
(ROPC2) 'pulse' when
CD-R writing?
YES
Go to "BETA Measurement
Circuit Check"
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