Read Sony XBR-55X900B Service Manual online
XBR-55X900B 14
SECTION 3 - REPAIR INFORMATION
4. Locate and remove all screws from the Main Board, then lift as shown
to detach.
Main Board
Main Board
5. Install the new Main Board and/or Tuner Board, screws and
all connectors.
6. Update the Software.
After ALL repairs UPDATE the SOFTWARE to the latest version.
Instructions are included with the Software package on the
Instructions are included with the Software package on the
Sony
Authorized Service Portal
website.
a. Insert the USB device with the latest Software into one of the TVs’
USB ports.
b. Connect TV to AC power.
c. Wait at least 20 seconds.
d. Press Power button
I/0
on the TV to turn it ON.
e. Wait until the Software update is completed.
7. Access
Service Mode by pressing the following buttons within 1 second
of each other:
DISPLAY
Channel
5
Volume
+
Power
I/0
8. When the
DIGITAL Menu appears, press
2
until
002 MODEL category
displays.
5. Release all upper clips from the Rear Cover and lift as shown to detach.
REPLACING THE MAIN BOARD AND TUNER BOARD
The Main Board and Tuner Board used in this model are available for
repair. For Part Number information refer to
repair. For Part Number information refer to
Section 4 - Exploded View/Part
Number Information on page 21.
1. Slide the Side Bracket as shown to detach from the Main Board.
Side
Bracket
Side
Bracket
2. Locate and disconnect all connectors. Then remove all screws from
the Main Board Plate to detach.
3. Remove all screws and release the Tuner Board from the Main Board
as shown to detach.
Tuner Board
Tuner Board
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