Power (System) Flow - Sony BDP-S1100 Service Manual

6-2. Power (System) Flow

AC IN
Check the output voltages from the power
supply block.
CN201 pin 1: +12V (UNSW12V)
CN201 pin 2: +12V (FE_UNSW12V)
Yes
Check the fuses
Have any of the below fuses blown?
MB board: PS201, PS202
No
Check the following power control signals
while the power is ON
PCONT1# : MB board R288, R205,R243
Yes
Check Voltage lines that are not output are
shorted to GND
Check that the harness has been inserted
No
properly. If there is no problem,
power supply block NG.
Blown fuses --> Replace the MB board
Yes
Failure of power supply IC ->
No
Replace the MB board.
6-3
BDP-S1100/BX110/S3100/BX310