Sony RDR-VX500 Service Manual page 119

Disc loading error
No
Are main and deck
Check the power
power OK?
Yes
Is the
No
FFC cable (between main & deck) Reinsert FFC cable correctly
inserted correctly?
Yes
Change the main board
No Analog Audio Output
Voltage of L802 is 9V No
(jack PCB)
Yes
Check the pin #13, #20
No
Check IC501 #3pin Sdata
IC501(DVD main PCB) is LOW
Yes
Is trere a Output on C837, No
C836(Jack PCB)?
Yes
Check the passive components
ardund jack pin
Check the board to board connector
between jack PCB and main PCB
Power block Replace Jack board
No
Is trere a signel on
Replace main board
C191, C196?
Yes