Read Sony BDP-S790 Service Manual online
9-2
Main Flowchart
o
N
o
N
s
e
Y
s
e
Y
No
Yes
Yes
No
Yes
No
No
s
e
Y
s
e
Y
No
s
e
Y
s
e
Y
No
Yes
No
Yes
No
Power ON by power switch on front or remote
control.
Has system reset (CPU_XRST) been
cancelled?
Measurement point JL1018
To Video section flowchart
Start (and return from each flowchart)
Approximately 10 seconds after the AC is
applied, the WAIT display flashes several
times and the power is turned OFF
automatically.
Are the power supply voltages on the MB
board normal?
To Power Supply (System) flowchart.
Replace the MB board.
To Drive flowchart
BU Adjustment Flow [yy] ~ After BU/MB
Replacement ~
To FR-317 board flowchart
To remote flowchart
Check the parts and mounting around X401.
Replace the MB board.
To Drive flowchart
BU Adjustment Flow [yy] ~ After BU/MB
Replacement ~
Is OPEN or CLOSE displayed on the
fluorescent tube?
Is there any problem in the FFC connection to
CN1270 which connects the drives?
To FR board flowchart
Is XMB or the SETUP screen displayed on the
video output screen?
Do the up, down, left, and right arrow keys of
the remote control permit operations on the
XMB?
Is the main clock (X401) oscillating properly at
27 MHz?
To Drive flowchart
Is the sound reproduced properly when a BD,
DVD, or other disc is played?
To Audio section flowchart
Is the picture reproduced properly when a BD,
DVD, or other disc is played?
To Video section flowchart
Are BD, DVD, or other discs that are loaded on
the drive recognized correctly?
Yes
Check the connections of the connectors.
If there is no improvement, replace the MB
board.
To Drive flowchart
BU Adjustment Flow [yy] ~ After BU/MB
Replacement ~
BDP-S790
To TS-160, TS-161
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