LG GCC-4480B Service Manual page 61

Cd-rw/dvd-rom drive
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Writing Part Check.
Refer "Laser is abnormal".
Load tray with CD-R/RW Disc.
Run the Writing Tool
(Easy CD Creator or Nero).
Run the Writing with Tool
(Easy CD Creator or Nero).
Does the
blink of LED 801 occurs during
Writing?
YES
Does Writing finish without
any error?
YES
Is the written file read
normally?
YES
OK
68
NO
Check the connection between
IC200 pin 75 and LED.
Check and replace the LED701.
NO
NO
YES
Check the connection of IC100 pin 181
and replace the IC100.
Do the IC200(RF)
pin 75 output toggle signals
during Writing?
YES
NO
NO
Check the communication lines
between IC100 and IC200.
Check and replace the IC200.
Eject Tray.
Go to "LD Check"(Not Recorded).
Is the re-written file read
normally?
NO
Is RFPDSH input signal
Pulse when CD-R writing?
(IC200 pin 58)
YES
Check and replace IC100, IC200.

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