Philips DVP3350V Service Manual page 63

C
Laser turns on when
reading disc?
YES
Put disc in?
YES
Disc ID is correct?
YES
Does spindle rotate?
YES
D
NO
LD_DVD or LD_CD
output properly?
Collector voltage of power
transistor is OK?
Check cable connection
between transistor ouput
and pick-up head.
NO
Laser off
NO
Proper RF signal on
ZR36882?
Check LD_DVD & LD_CD
signal
NO
Proper SPINDLE_S signal
on ZR36882
SP+ & SP- output properly?
Check the cable connection
between spindle and main
PCBA.
3-68
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Check the laser power circuit
on ZR36882 and connecting
to power transistor.
Check the related circuit on
laser power transistor
Check the related circuit
on ZR36882 RFL signal.
Check SPINDLE_S related
circuit on ZR36882.
Check the spindle control
amp circuit of motor driver.