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5-4
Disc cannot be read
.
No
Yes
No
Yes
No
Yes
Yes
No
No
Yes
Disc cannot be read.
Check the loaded circuit
1.Check voltage on pin 97 of U2 varies
between 0 and 3.3V:
Æ
3.3V for CD
Æ
0V for DVD
2.Check whether peripheral components
are eroded or defect
Check the FFC connection
between 24P and the loader.
Check U1 and peripheral components
Re-solder or replace the defective parts
Check the connection
between U2
Correct connection
Replace U2 or loader.
Yes
Check whether there is laser
voltage (2.3V for DVD and 1.9V
for CD) on Collector of Q4 &Q5
Check if there is RFO signal on
pin10 of XP7. (The normal RFO
signal is a clear reticulated wave)
Trouble shooting chart
Check U2, U4, and
peripheral components are
eroded or badly soldered.
Содержание DVP3111/55
Страница 40: ...Front Board and Switch Board Print layout Bottom side 7 9 7 9 ...
Страница 41: ...Power Board Print layout Bottom side 7 10 7 10 USB Board Print layout Bottom side for DVP3300 ...
Страница 42: ...Power Board Print layout for DVP3300X 96 Bottom side 7 10 7 10 ...
Страница 43: ...Main Board Print layout Top side 7 11 7 11 ...
Страница 44: ...Main Board Print layout Bottom side 7 12 7 12 ...
Страница 51: ...REVISION LIST Version 1 0 Initial release for DVP3111 55 and DVP3300 93 9 1 Version 1 1 Adding DVP3300 96 ...