Sony XBR-55X900B Service Manual ▷ View online
XBR-55X900B 13
SECTION 3 - REPAIR INFORMATION
REPAIRING THE TV
If the latest Software does not correct the issue, complete the following:
1. Verify the television has the symptom the customer indicated.
2. Replace part causing the symptom.
3. Install the latest version of Software (Required for ALL repairs).
4. Perform the required service adjustments and checks.
5. Verify the repair resolved the issue.
REMOVING THE TABLE-TOP STAND
1.
Place TV face down on a soft and flat surface.
2. Locate and remove the screws as shown to detach the Right and
Left Stand.
REMOVING THE REAR COVER
1. Remove 1 screw from AC Cover, and disconnect the connector to detach.
HOLD
2. Locate the Side Cover and lift as shown to detach.
3. Locate the Rear Terminal Cover and lift as shown to detach.
4. Locate and remove all screws from the Rear Cover.
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
XBR-55X900B 15
SECTION 3 - REPAIR INFORMATION
9. Press
1
until
001 DEST item displays.
DIGITAL
SERVICE
002 MODEL
001 DEST
001 DEST
ATSC_UC_BASE
CAUTION: If the incorrect Destination Data Value is selected, it may
corrupt the Sofware requiring a Main Board replacement.
corrupt the Sofware requiring a Main Board replacement.
10. Select the correct destination of the TV, press
3
to increase or
6
to decrease the data value (Use the table below for reference).
Model Name
Destination
Data Value
XBR-55X900B
US/CND
ATSC_UC_BASE
11. Press
MUTING
then
0
to save the changes.
DIGITAL
SERVICE
002 MODEL
001 DEST
WRITE
ATSC_UC_BASE
12. Press
1
until
002 MODELNAME displays.
DIGITAL
SERVICE
002 MODEL
002 MODELNAME
_________
13. Press
3
until the model displayed matches the model of the TV.
CAUTION: The Model Name can only be selected once. Be sure
to verify the information is correct before saving the changes.
to verify the information is correct before saving the changes.
14. Press
MUTING
then
0
to save the changes.
DIGITAL
SERVICE
002 MODEL
002 MODELNAME
XBR-55X900B
WRITE
15. Locate the Serial Number for the TV on the side of the Rear Cover.
MODEL NO
XBR-55X900B
SERIAL NO
5000001
16. Press
1
until
003 SERIAL item displays.
DIGITAL
SERVICE
002 MODEL
003 SERIAL
17. Press
0
to display the
Serial Number Edit option.
DIGITAL (MODEL)
SERVICE
SerialNumberEdit
*1 SerialNumber
XBR-55X900B 16
SECTION 3 - REPAIR INFORMATION
18. Press
to display the
Serial Number input screen.
DIGITAL (MODEL)
SERVICE
SerialNumberEdit
*1 SerialNumber
Please Input serial number
(0000000-99999999)
_ _ _ _ _ _ _
CAUTION: The Serial Number can only be selected once. Be sure
to verify the information is correct before saving the changes.
to verify the information is correct before saving the changes.
19. Enter the Serial Number of the TV.
NOTE:
If the incorrect Serial Number is entered, press
RETURN
to go back to the Serial Number input screen and re-enter
the correct number.
the correct number.
20. Press
to save the Serial Number.
DIGITAL (MODEL)
SERVICE
SerialNumberEdit
*1 SerialNumber
5000001
5000001
WRITE
21. Press
1
until option
006 VAR_TYPE displays.
DIGITAL
SERVICE
002 MODEL
006 VAR_TYPE
22. Press
3
until
UC option displays.
DIGITAL
SERVICE
002 MODEL
006 VAR_TYPE
UC
23. Press
MUTE
then
0
to save the changes.
DIGITAL
SERVICE
002 MODEL
006 VAR_TYPE
UC
WRITE
24. Turn the TV OFF.
25. Press
on the Remote Commander and Power button
I/0
on TV
to set unit to Shipping Condition.
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