LG GCC-4241N Service Manual page 58

Write Part Check
Refer "Laser operation is abnormal".
Load tray with CD-R/RW.
Run the Writing Tool
(Nero-Burning ROM).
Run the Writing with Tool
(Nero-Burning ROM).
Does Writing finish
without any error?
Yes
Is the written file
read normally?
Yes
YES
60
No
No
Yes
Check the connection of IC201 pin
129 and replace IC201.
Go to "LD Check (Write Power
Check)".
No
Check and replace IC101, IC201.
Eject Tray
Is the re-written file read
normally?
No
Is RAPC
input signal Pulse when
CD-R writing?
(IC101 pin 28)
Yes