Philips DVP 1013, Service Manual, Page: 13 / 32

4-4
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 44 of U1
varies between 0 and 3.3V:
Æ
3.3V for VCD
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 U1 and loader
Correct connection
Replace U1 or loader.
Yes
Check whether there is laser
voltage (1.9V for VCD and 2.3V
for DVD) on Collector of Q7 &Q8
Check if there is RFO signal on
pin17 of CN3. (The normal RFO
signal is a clear reticulated
wave)
Check U1, U2, and
peripheral components are
eroded or badly soldered.
Trouble shooting chart