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Disc cannot be read .
Disc cannot be read.
Check the FFC connection
between 24P and the loader.
Check whether there is
laser voltage (2V for VCD
and 2.2V for DVD) on
Collector of Q5 &Q6
Check U3, U4, and
peripheral components are
eroded or badly soldered.
Check if there is RFO signal
on
pin10
normal RFO signal is a clear
reticulated wave)
Yes
Check the connection between
CN7 and FCC cable
Replace U3 or loader.
Yes
Yes
Yes
No
of
CN7.
(The
Yes
4-4
No
Check the loaded circuit
No
Check
whether
components are eroded or defect
Yes
Re-solder or replace the defective
parts
No
Check U3 and peripheral components
No
Correct connection
Trouble shooting chart
peripheral
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