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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 Q6 &Q5
Check U2,U3,andperipheral
components are eroded or
badly soldered.
Check if there is RFO signal on
pin17 of CN2. (The normal RFO
signal is a clear reticulated wave)
Check the connection
between U2
Replace U2 or loader.
Great user manuals database on
Yes
Yes
Yes
Yes
Yes
Yes
UserManuals.info
4-14
Remark: Trouble shooting chart for
No
Check the loaded circuit
1.Check voltage on pin 112 of U2 varies
between 0 and 3.3V:
No
3.3V for VCD
0V for DVD
2.Check whether peripheral components
are eroded or defect
No
Re-solder or replace the defective parts
No
Check U2 and peripheral components
No
Correct connection
Trouble shooting chart
DVP3156/XX, DVP3166(K)/XX
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