Read Sony BDP-BX510 / BDP-S4100 / BDP-S5100 Service Manual online
BDP-S4100/BX510/S5100
6-3
6-2. Power (System) Flow
AC IN
Check the output voltages from the power
supply block.
supply block.
CN201 pin 1: +12V (UNSW12V)
CN201 pin 2: +12V (UNSW12V)
CN201 pin 3: +12V (FE_UNSW12V)
CN201 pin 2: +12V (UNSW12V)
CN201 pin 3: +12V (FE_UNSW12V)
No
Yes
Check the fuses
Have any of the below fuses blown?
Have any of the below fuses blown?
No
MB board: PS301,
PS302
Yes
Check the following power control signals
while the power is ON
while the power is ON
PCONT1#
: MB board
Is PCONT1# : 3.3V ?
R396, R398,R390
Yes
Check Voltage lines that are not output
are shorted to GND
No
Failure of power supply IC ->
Replace the MB board .
Replace the MB board .
Check that the harness has been inserted
properly. If there is no problem, replace the
power supply block.
properly. If there is no problem, replace the
power supply block.
Blown fuses ->
Replace the MB board
No
Failure of Reset IC. Replace MB Board.
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