3-6
A
RESET or Power On.
NO NO
YES
NO
YES
NO
YES
YES
B
NO
NO
NO
YES
YES
NO
NO
YESYES
YES
Show LOGO?
Flash Memory operates
properly?
Check connection lines between FLASH
& ES6168 and the FLASH access time
whether is suitable or not.
SDRAM works properly?
Check connection lines between
SDRAM & ES6168 and the SDRAM
is damaged.
ES6168 and
Video ICs outputs
properly?
Check the related ICs and circuit of
video board.
Have TV signal output?
Check the filtering and amp circuit of
TV signal.
Check AV cable connection
to TV set.
Does Tray move
inside when it is not
at closed position?
Normal OPEN_SW&
CLOSE_SW signals?
Check the load OPEN & CLOSE
switch
Normal LDM1 &
LDM2 signal?
Normal EJ+ & EJ-
signal?
Check the cable connection
between main PCBA and loader.
Check the Tray control IO pins on
CXD1885 & FAN8042.
Check the Tray control amplifying
circuit on Motor driver.
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