Philips DVP3320 Service Manual page 18

No display on LED, and buttons do not work
1.Check whether bad solder exists on
U600 and pins of LED,
2.Check whether the circuit connected to
K301,K302,is broken,
3.Check whether R303,R301,R302 are
open-circuit.
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No display on LED, and
buttons do not work
Yes
Check whether there is
correct contact between
XS301 and XP1
Yes
Check VCC(+5v) voltage
on the power and front
board
Yes
Check there are CS, DATA
and CLK signals on XS301
on the front board.
Yes
Yes
Replace U301 or LED
UserManuals.info
5-6
No
Correct connection
No Fix power supply board top
a power supply for should
electric circuit
No
Check the U2's pin 48,95,96 arrive
the XP1 connect condition
XP1 (PIN 1 CLK)
No
Correct connection
Trouble shooting chart
XP1 (PIN3 DOUT)