Philips DVP3350V/01 Service Manual page 59

DVD ELECTRICAL TROUBLESHOOTING GUIDE
A
RESET or Power On.
Show LOGO?
YES
Does
Tray move inside
when it is not at closed
position?
YES
B
Flash
NO
Memory operates
properly?
SDRAM
works properly?
ZR36966
VIDEO outputs
properly?
Have TV
signal output?
Check AV cable
connection to TV set.
Normal
NO
OUTSW & INSW
signals?
Normal
OPEN & CLOSE
signal?
Normal LOAD+ &
LOAD- signal?
Check the cable connection
between main PCBA and loader.
3-62
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Pins on ZR36966 & AM5890S.
YES
NO
YES
Check connection lines
between FLASH & ZR36966
and the FLASH access time
whether is suitable or not.
Check connection lines
between SDRAM & ZR36966
and SDRAM is damaged.
Check the related
circuit of ZR36966.
Check the filtering and amp
circuit of TV signal.
Check the load OPEN &
CLOSE switch
Check the control Tray IO
Check the Tray control
amplifying circuit on Motor driver.