11
RX
D-M9
09/LS
-M9
09
14. TEST & DEBUG FLOW
NO
NO
Check connection lines between
FLASH & ES8390 or the FLASH
access time whether is suitable or not.
YES
Check AV cable connection
to TV set.
Show LOGO?
YES
YES
Flash Memory
operates properly?
NO
Check connection lines between
SDRAM.
(IC502) & ES8390 or the SDRAM is
damaged.
YES
SDRAM works
properly?
NO
Check the related circuit of
ES8390 (IC501)
PIN77,78,79,80,81,82,83,84,85,86
YES
ES8390 VIDEO
outputs properly?
NO
NO
Check the MD mecha
Check the cable connection between
DVD PCB and MD (MECHA).
Does tray was
inserted inside when
you push Disc1~5
button?
YES
YES
SW5 & SW7 signals
on P403 are OK?
NO
Check the output signal of
ES8390 to IC401 for control
OPEN/CLOSE.
YES
OPEN / CLOSE
signals on IC401 are
OK?
NO
Check the Tray control I/O
Pin on IC401.
YES
Load+ & load- signals
on P403 are OK?
POWER ON
A
NO
YES
Check the related circuit of SLED
and Motor driver IC ( IC401)
YES
Check the cable connection
with MECHA.
Does the
SLED move to inner side
when it is at outer
position?
YES
YES
SLED signal is OK?
NO
NO
Check Focus connection on
ES8390 and motor driver IC.
Check cable connection
with pick-up head.
Optical
Lens is moving
for searching Focus?
YES
YES
Proper
Focus outputs
to motor driver?
NO
Check the motor driver (IC401).
YES
Proper F+ & F-outputs?
A
B
Note: This shooting is the original circuitry so there are some different points from RXD-M909.
TROUBLESHOOTING
