Read Sony BDP-S1000ES / BDP-S760 / BDP-S765 Service Manual online
9-2
BDP-S760/S765/S1000ES
Power Supply (System) flowchart
AC IN
Check the output voltages from the power
supply block.
Are the following voltages OK?
No
CN301 pin 3, 4:+12V (UNSW12V)
CN301 pin 7, 8, 9: +5.8V (UNSW6V)
CN801 pin 1: +12V (UNSW12VA)
CN801 pin 3: +6V (UNSW6VA)
CN801 pin 5: -9V (UNSW-9VA)
Yes
Check of fuses
Have any of the following fuses blown?
No
Replace blown fuses.
Replace the MB board if there is no
improvement.
MB board: PS301, PS303, PS304, PS802,
PS803, PS804
FR board: PS701
Yes
Check the following power control signals
while the power is ON.
Are they H level (3.3 V)?
No
To IFcon section flowchart
PCONT1: MB board R304
PCONT2: MB board R309
PCONT3: MB board R376
PCONT3: MB board R367
ATA_PCONT: MB board CN301 pin 11
ATA_PCONT2: MB board C1285 (+ side)
Yes
Check the voltages based on the schematic
diagram.
Are they output correctly?
No
Voltage lines that are not output are shorted
to GND.
No
Failure of power supply IC --> Replace the
IC. Replace the MB board if there is no
improvement.
To Drive flowchart
BU Adjustment Flow [yy] ~ After BU/MB
Replacement ~
Yes
Yes
Power supply is OK
Replace the MB board when the parts on
that voltage line cannot be identified as
shorted.
To Drive flowchart
BU Adjustment Flow [yy] ~ After BU/MB
Replacement ~
Check that the harness has been inserted
properly. If there is no problem, replace the
power supply block.
To Drive flowchart
BU Adjustment Flow [yy] ~ After BU/MB
Replacement ~
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