Sony XBR-55X850A Operating instructions

REPAIR MANUAL
Self Diagnosis
Supported model
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
LCD Digital Color TV
9-883-542-01
RB1FS Chassis
Segment: FB
Version Date Subject
1.0 08/29/2013 Original Manual Release Date.
MODEL COMMANDER DESTINATION
XBR-55X850A RM-YD087/RMF-YD001 US/CND
XBR-65X850A RM-YD087/RMF-YD001 US/CND
XBR-55X850A

XBR-55X850A/65X850A i
TABLE OF CONTENTS
Cautions and Warnings...................................................................................ii
Section 1 - Specications and Layouts .........................................................1
Specications ................................................................................................1
Checking the Accesories .......................................................................................1
Board Layout .................................................................................................2
XBR-55X850A........................................................................................................2
XBR-65X850A........................................................................................................2
Smart Core Block...................................................................................................2
Wire Dressing................................................................................................3
XBR-55X850A........................................................................................................3
XBR-65X850A........................................................................................................3
Smart Core Block...................................................................................................3
Section 2 - Troubleshooting ...........................................................................4
Diagnosing the Error .....................................................................................4
Viewing the Self Check Diagnosis History.............................................................4
Triage Chart...................................................................................................5
Flowcharts and Diagrams..............................................................................6
Overall Block Diagram...........................................................................................6
Power and Control Block Diagram.........................................................................7
No Power Flowchart ..............................................................................................8
Standby LED Blinking Flowchart ...........................................................................9
No Video Flowchart .............................................................................................10
Video Distorsion Flowchart.................................................................................. 11
Section 3 - Repair Information......................................................................12
Repairing the TV..........................................................................................12
Removing the Table-Top Stand............................................................................12
Removing the Rear Cover ...................................................................................12
Replacing the Main Board ...........................................................................13
Replacing the Power Supply Board.............................................................16
Removing the Speakers ..............................................................................16
Replacing the Switch Unit ...........................................................................16
Removing the Smart Core Block .................................................................17
Section 4 - Exploded View/Part Number Information.................................18
Table-Top Stand ..........................................................................................18
XBR-55X850A/65X850A .............................................................................19
XBR-55X850A .............................................................................................20
XBR-65X850A .............................................................................................21
Smart Core Block ........................................................................................22
Connectors ..................................................................................................23
XBR-55X850A......................................................................................................23
XBR-65X850A......................................................................................................23
Smart Core Block.................................................................................................24
Screws.........................................................................................................25
Section 5 - Accesories/Part Number Information .......................................26
Accessories and Packaging ........................................................................26
Miscellaneous..............................................................................................26
Optional Accessories...................................................................................26
Remote Commander ...................................................................................26
Appendix A: Encryption Key Components ............................................... A-1

XBR-55X850A/65X850A ii
CAUTION!!
These servicing instructions are for use by qualied service personnel only.
To reduce the risk of electric shock, do not perform any servicing other than
that contained in the operating instructions unless you are qualied to do so.
WARNING!!
An isolation transformer should be used during any service to avoid possible
shock hazard, in case of live chassis.
!
SAFETY-RELATED COMPONENT WARNING!!
There are critical components used in LCD color TVs that are important for
safety. These components are identied with shading and
!
mark on the
schematic diagrams and the parts list. It is essential that these critical parts
be replaced only with the part number specied in the parts list to prevent
electric shock, re or other hazard.
NOTE: Do not modify the original design without obtaining written permission
from the manufacturer or you will void the original parts and labor warranty.
ATTENTION!!
For safety reasons, component level repair of the Power Supply Boards
and/or the Inverter Boards is prohibited.
CAUTION ABOUT THE LITHIUM BATTERY!!
Replace only with the same or equivalent type. Danger of explosion may
occur if battery is replaced incorrectly. Exposed battery should not be in
contact with water.
CAUTIONS AND WARNINGS
ATTENTION!!
Ces instructions de service sont à l’usage du personnel de service qualié
seulement. Pour prévenir le risque de choc électrique, ne pas faire l’entretien
autre que celui contenu dans le Mode d’emploi à moins que vous soyez
qualié faire ainsi.
ALERTE!!
An d’eviter tout risque d’electrocution provenant d’un chássis sous tension,
un transformateur d’isolement doit etre utilisé lors de tout dépannage.
!
ATTENTION AUX COMPOSANTS
RELATIFS A LA SECURITE!!
Les composants identies par une trame et par une marque
!
sur les
schemas de principe, les vues explosees et les listes de pieces sont d’une
importance critique pour la securite du fonctionnement. Ne les remplacer
que par des composants Sony dont le numero de piece est indique dans le
present manuel ou dans des supplements publies par Sony. Les reglages
de circuit dont l’importance est critique pour la securite du fonctionnement
sont identies dans le present manuel. Suivre ces procedures lors de
chaque remplacement de composants critiques, ou lorsqu’un mauvais
fonctionnement suspecte.
ATTENTION!!
Pour des raisons de sécurité, Interdire de réparer ou remplacer les
composantes dans les blocs d’alimentation et/ou sur les modules d’inverseur.
AVERTISSEMENT AU SUJET
DE LA PILE AU LITHIUM!!
Ne remplacez qu’avec une pile de type identique ou équivalent. Danger
d’explosion si la pile est remplacée incorrectement. La pile exposée ne
devrait pas être mise en contact avec de l’eau.

XBR-55X850A/65X850A iii
CAUTIONS AND WARNINGS
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety
checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly soldered
connections. Check the entire board surface for solder splashes
and bridges.
2. Check the interboard wiring to ensure that no wires are “pinched” or
touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps and
mounting hardware have been replaced. Be absolutely certain that
you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly transistors,
that were installed during a previous repair. Point them out to the
customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious signs of
deterioration. Point them out to the customer and recommend their
replacement.
6. Check the line cords for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.
7. Check the antenna terminals, metal trim, “metallized” knobs, screws
and all other exposed metal parts for AC leakage. Check leakage
as described in “Leakage Test”.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and from all
exposed metal parts to any exposed metal part having a return to chassis,
must not exceed 0.5 mA (500 microamperes). Leakage current can be
measured by any one of three methods.
1. A commercial leakage tester.
Follow the manufacturers’ instructions provided with the tester.
2. A battery-operated AC milliammeter.
3. Measuring the voltage drop across a resistor by means of a VOM
or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so
analog meters must have an accurate low voltage scale. Nearly all
battery-operated digital multimeters that have a 2 VAC range are
suitable. (see Figure A)
To Exposed Metal
Parts on Set
0.15 µF
Earth Ground
AC
Voltmete
r
(0.75V)
Figure A. Use an AC voltmeter to check AC leakage.
HOW TO FIND A GOOD EARTH GROUND
The cover-plate retaining screw on most AC outlet boxes is at earth ground.
Verify the AC outlet box retaining screw ground by connecting a 60W to
100W incandescent (not a neon or uorescent lamp) between the hot side of
the receptacle and the retaining screw. Try both slots, if necessary, to locate
the hot side on the line; the lamp should light at normal brilliance if the screw
is at ground potential. (see Figure B)
Figure B. Checking for earth ground.
Trouble Light
AC Outlet Box

XBR-55X850A/65X850A
SPECIFICATIONS
System
Television system
ATSC (8VSB terrestrial): ATSC Compliant 8VSB
QAM on cable: ANSI/SCTE 07 2000 (Does not include CableCARD functionality)
Channel coverage
Analog Cable: 1 - 135 / Digital Cable: 1 - 135
Panel system
Speaker output
Input/Output jacks
CABLE/ANTENNA
VIDEO: 1 Vp-p, 75 ohms unbalanced, sync negativeVIDEO IN
AUDIO: 500 mVrms (Typical) / Impedance: 47 kilohms
COMPONENT IN
VIDEO IN 2
YP B P R(Component Video): 1080p (60 Hz), 1080i (60 Hz), 720p (60 Hz), 480p, 480i
Audio Input (phono jacks)
Video Input (common pin with Y input)
HDMI IN 1/2/3/4
(Support 4K resolution)
Video (3D):
Frame Packing: 1080p (30 Hz), 1080/24p, 1080i (60 Hz), 720p (30, 60 Hz), 720/24p
Side-by-Side: 1080p (60 Hz), 1080/24p, 1080i (60 Hz), 720p (60 Hz)
Video (3D):
Side-by-Side: 1080/24p, 1080i (60 Hz), 720p (60 Hz)
Over-Under: 1080p (30 Hz), 1080/24p, 1080i (60 Hz), 720p (60 Hz)
Audio: Two channel linear PCM: 32, 44.1 and 48 kHz, 16, 20 and 24 bits, Dolby Digital
Over-Under: 1080p (30, 60 Hz), 1080/24p, 1080i (60 Hz), 720p (60 Hz)
Audio: Two channel linear PCM: 32, 44.1 and 48 kHz, 16, 20 and 24 bits, Dolby Digital
ARC (Audio Return Channel) (HDMI IN 1 only)
AUDIO OUT/Headphones
LAN
MHL
(Common with HDMI IN 2)
DIGITAL AUDIO OUT
(OPTICAL)
Digital optical jack (Two channel linear PCM, Dolby Digital)
10BASE-T/100BASE-TX connector (Connection speed may dier depending on the network
environment. 10BASE-T/100BASE-TX communication rate and communication quality are not
guaranteed for this TV)
USB/DLNA Refer to the i-Manual for supported formats
Photo, Music and VideoUSB
NTSC: American TV Standard
Analog Terrestrial: 2 - 69 / Digital Terrestrial: 2 - 69
LCD (Liquid Crystal Display) Panel, LED Backlight
10 W + 10 W + 10 W
75-ohm external terminal for RF inputs
Stereo mini jack
1080i (60 Hz), 720p (30, 60 Hz), 720/24p, 480p, 480i, PC Formats
Video (2D): 4096 × 2160p (24 Hz), 3840 × 2160p (24, 25, 30 Hz), 1080p (30, 60 Hz), 1080/24p,
Video (2D): 1080p (30 Hz), 1080/24p, 1080i (60 Hz), 720p (30, 60 Hz), 720/24p, 480p, 480i
SECTION 1 - SPECIFICATIONS AND LAYOUTS
•Optional accessories availability depends on its stock.
•Design and specications are subject to change without notice.
*Dimensions and mass are approximate values.
Model name XBR-55X850A
Power and others
Others
Power requirement
Power consumption 338 W 264 W
in use
in standby
Screen size*64, 5 inches
(65 class)
400 x 300
54, 6 inches
(55 class)
(measured diagonally)
(inches)
Display resolution
Dimensions* with stand
(inches)
1478 × 894 × 405
58 × 35 1
/4 × 16
1
/4
1478 × 863 × 64
58 × 34 x 2
1
/4
1259 × 770 × 405
49 × 30 3
/8 × 16
5
/8
without stand (mm)
(inches)
wall-mount hole pattern
(mm)
wall-mount screw size
(mm)
Mass*
(lb)
38, 9
85, 7
28, 2
62, 2
(kg)
(lb)
37, 5
82, 6
26, 8
59,1
Optional accessories
Operating temperature
110-240 V AC, 50/60 Hz (USA/Canada 120 V AC, 60 Hz)
0,2 W
3,840 dots (horizontal) × 2,160 lines (vertical)
(mm)
(kg)with stand
without stand
M6 (8~12 mm)
Connecting Cables
Support Belt Kit
Camera and Microphone Unit: CMU-BR200/CMU-BR100
USB Wireless LAN Adapter: UWA-BR100
Active 3D Glasses: TDG-BT500A
32 ºF – 104 ºF (0 ºC – 40 ºC)
XBR-65X850A
1259 × 740 × 59
49 × 29 1
/4 × 2
5
/83
/8
5
/8
15 × 11 7 /8
3
/4
300 x 300
11 × 11 7
/8
7
/8
CHECKING THE ACCESORIES
- Remo
te Control (1)*
1
1
- S
ize AAA Batteries (2)
- T
able-Top Stand (1)* 2
- F
ixing screws for Table-Top Stand
(M5
× 12) (4)
- Active 3D Glasses (battery included) (4)
- One-Touch Remote Control
(1)*
- Op
erating Instructions and
o
ther documents
*
1
Please refer to the model name printed on the
remote control.
*2Assembling the Table-Top Stand is required.
Refer to the supplied Table-Top Stand leaet to
assemble the Table-Top Stand.

XBR-55X850A/65X850A
SECTION 1 - SPECIFICATIONS AND LAYOUTS
BOARD LAYOUT
XBR-55X850A
XBR-65X850A
LD BOARD
MAIN BOARD
(BAF2S)
POWER
SUPPLY
BOARD
(G7)
POWER
SUPPLY
BOARD
(G6)
SWITCH UNIT
TCON
SMART CORE
LD BOARD
MAIN BOARD
(BAF2S)
POWER
SUPPLY
BOARD
(G8)
POWER
SUPPLY
BOARD
(G6)
SWITCH UNIT
TCON
SMART CORE
SMART CORE BLOCK
WLAN MODULE
HSF2 BOARD
HIF BOARD
BLUETOOTH
MODULE

XBR-55X850A/65X850A
SECTION 1 - SPECIFICATIONS AND LAYOUTS
WIRE DRESSING
XBR-55X850A
XBR-65X850A
SMART CORE BLOCK

XBR-55X850A/65X850A 4
DIAGNOSING THE ERROR
Before servicing the Television:
1. Verify the TV has the symptom the customer indicated.
2. Check to see if the latest Software is installed.
a. If not, install the latest version.
3. Determine the replacement part required.
VIEWING THE SELF CHECK DIAGNOSIS HISTORY
When an error is detected, the Self Check screen records the number of
times the error occurred. This is helpful in conrming past occurrences of an
error and for determining if an error is intermittent when the customer is not
sure what is causing the television to shut down. If the screen displays a “0”,
no error has occurred.
1. Press
POWER
to turn on the TV and then turn it off again.
2. Press the following buttons on the Remote Commander within 1
second of each other:
DISPLAY
Channel 5 Volume
-
POWER
NOTE: This differs from accessing Service Adjustments Mode (Volume +).
SECTION 2 - TROUBLESHOOTING
Self Diagnosis
Supported model
SELF CHECK
000 RESERVED --------------------- ------------------------------------------ 00
000 RESERVED --------------------- ------------------------------------------ 00
002MAIN_POWE --------------------- ------------------------------------------ 00
003 DC_ALERT --------------------- ------------------------------------------ 00
003 AUD_PROT --------------------- --------------------- ---------------------00
003 HDMI_EQ --------------------- --------------------- --------------------- 00
003 TU_DEMOD --------------------- ------------------------------------------ 00
004 VLED --------------------- ------------------------------------------00
004 LD_ERR --------------------- --------------------- ---------------------00
005 HFR_ERR --------------------- --------------------- ---------------------00
005 TCON_ERR120123132522 120123113645--------------------- 02
005 P_ID-ERR --------------------- --------------------- --------------------- 00
006 BACKLITE --------------------- ------------------------------------------00
007 TEMP_ERR --------------------- ------------------------------------------ 00
007 FAN_ERR --------------------- ------------------------------------------ 00
010 EMITTER --------------------- --------------------- ---------------------00
101 VPC_WDT --------------------- ------------------------------------------ 00
102 MEPS_WDT--------------------- ------------------------------------------ 00
103 HOST_WDT --------------------- ------------------------------------------00
104 STBY_WDT --------------------- ------------------------------------------ 00
00345 000333 06789
Total operation time by hour (MAX:65535)
Boot count (MAX:65535)
Panel operation time by hour (MAX:65535)
Total operation time by hour (MAX:65535)
Boot count (MAX:65535)
Panel operation time by hour (MAX:65535)
StandBy LED
Blink Count
Diagnosis
Item
Date and Time Display*
Error Count
(00-99)
*Format of Error History = YYMMDDhhmmss example 120123132522= Jan 23, 2012 13:25:22 (1:25:22PM)
NOTE: date and time must be set for this to work
SAMPLE SELF CHECK DIAGNOSIS PAGE

XBR-55X850A/65X850A 5
SECTION 2 - TROUBLESHOOTING
TRIAGE CHART
Use this general Triage Chart to determine what may possibly be causing the error before going out to the customers location.
1. Confirm the symptom from the customer. Red Dot: (Primary) Most likely defective part.
2. Select that symptom from the chart. Blue Triangle: (Secondary) Possible defective part.
3. Bring the primary component listed for that symptom.
5. Chart Color Code.
LAN Power Audio
2X 3X 4X 5X 6X 7X 8X No
WIF
I
Dead setNo
Video
Whole
Screen
Distortion
Isolated
Area
Distortion
No Audio
MAIN BOARD 
*▲ ▲ ▲ ▲
 
POWER SUPPLY   
LCD Panel
 
TCON  
▲ ▲
SERVICE BULLETIN
▲
SOFWARE UPDATE  
WLAN

Video Protection Modes
4. Follow the associated flowcharts in the Training Manual to isolate the board.
Board

*Immediate Shutdown After Power ON & 7X
*NOTE: REFER TO LCD PANELS SERVICE MANUAL IN
REFERENCE LIBRARY DATABASE FOR CORRECT
REPLACEMENT PARTS BASED ON SERIAL NUMBER.

XBR-55X850A/65X850A 6
SECTION 2 - TROUBLESHOOTING
FLOWCHARTS AND DIAGRAMS
OVERALL BLOCK DIAGRAM
TUNER
RF
VIDEO 2 CVBS/COMP
VIDEO 1 CVBS
HDMI 1
HDMI 3
HDMI
SWITCH &
EQ
HDMI 2
HDMI 4 (4K)
X
REALITY
SWITCH UNIT
USB 1
USB 2 USB 3 SMART CORE
HSF
IR RX
SENSOR
LED’s
HIF2
BLUETOOTH
BT
LVDS TX
LVDS TX
STBY/MAIN POWER CONVERTER
AC IN
G6
LCD PANEL
TCON
BAF2S
G7/G8
HDMI
EQ
WIFI
HW
LOCAL DIMMING
LD
HUS

XBR-55X850A/65X850A 7
SECTION 2 - TROUBLESHOOTING
POWER AND CONTROL BLOCK DIAGRAM
VLED_VCC
LD_ERR
SENSE_GND
VLED_GND
PWM DMMER
BL_ERR 3
2
BL_ON
GND
5
6~11
REG12V
TCON_ON
12~17
18~20
CN6601
1006NC1046NC
BAF2S
G7 (55”)
G8 (65”)
BL_ERR
BL_ON
LD_ERR
DIGITAL_STBY
1
2
3
4
CN6402
AC_OFF_DET
POWER_ON
27
28
26
TCON_VCC
5
6
GND
REG_12V
21, 22
TCON_GND
24
STBY_GND
25
STBY3.3V
PWM DMMER
BL_ERR
BL_ON
GND
REG12V
TCON_ON
AC_OFF_DET
POWER_ON
TCON_VCC
TCON_GND
STBY_GND
STBY3.3V
3
2
5
6~11
12~17
18~20
27
28
26
21~23
24
25
GL_CTL
REG_12V
BL_ERR
BL_ON
LD_ERR
DIGITAL_STBY
1
2
3
4
5
6
GND
REG_12V
G6
CN6602
1~4
6
7~9
11
12
14
TO LD
BOARD
MAIN BOARD
POWER SUPPLY

XBR-55X850A/65X850A 8
SECTION 2 - TROUBLESHOOTING
NO POWER FLOWCHART
No Power
Is Standby LED
blinking?
No
Yes
No
See Stanby
LED Blinking
Flowchart
Yes
Does red
Standby LED on
front panel light?
High (>2.5V)
on Pin 28 of CN6401
on Power Supply?
Yes
No
Main Board*
Press power
button while
monitoring Pin 28
of CN6401 on
Power Supply
Board.
High (3.3V)
appears
momentarily?
Yes
No
Power Supply
Board*
Power Supply
Board* Power Supply
Board*
Remove AC power and
wait at least 30
seconds before
reapplying.
*For Part Number information, refer to “Section 4 - Exploded View/Part Number Information” on page 18.

XBR-55X850A/65X850A 9
SECTION 2 - TROUBLESHOOTING
*For Part Number information, refer to “Section 4 - Exploded View/Part Number Information” on page 18.
STANDBY LED BLINKING FLOWCHART
Protect
Shutdown.
Standby LED
Blinking
No
YesPower Supply
Board*
No
Yes
2X
Main Board*3X
4X
No
Yes
5X
Yes
6X
No 7X
Immediately
LCD Panel*TCON*
(LCD Panel)
Yes
No After a while
Check ventilation
10X HEM3 Board8X See Triage Chart
Main Board*
Power Supply
Board*
No
Yes

XBR-55X850A/65X850A 10
SECTION 2 - TROUBLESHOOTING
*For Part Number information, refer to “Section 4 - Exploded View/Part Number Information” on page 18.
NO VIDEO FLOWCHART
No Video
Backlights
turned on?
Unplug LVDS
connector with
unit off. Turn unit
back on.
Test patterns
display on
screen?
Yes
No TCON*
(LCD Panel)
Sony logo
appears
momentarily?
No
Main Board*
No
Yes
Yes
Main Board*
Locate
CN6401 on
Power Supply
Board.
Zero volts at
Pin 5?
TCON*
(LCD Panel)
Yes
No Zero volts at
Pin 3?
Yes
Main Board*
No
LCD Panel*

XBR-55X850A/65X850A 11
SECTION 2 - TROUBLESHOOTING
*For Part Number information, refer to “Section 4 - Exploded View/Part Number Information” on page 18.
VIDEO DISTORSION FLOWCHART
Video Distortion
Is distortion
across entire
screen?
Any horizontal
lines?
No
No
Yes
Yes
Improper or
missing
colors?
Yes
Main Board*
No Vertical lines
or bars?
No
Yes
Lines
move when
wide-mode
changed?
Yes
No
TCON*
(LCD Panel)
Main Board*
LCD Panel*
Any single or
isolated vertical
lines?
YesLCD Panel*
More than 1
vertical band?
No
YesTCON*
(LCD Panel)

XBR-55X850A/65X850A 12
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 at surface.
2. Remove 4 screws from Table-Top Stand and pull down as shown to
detach from Rear Cover.
3. Locate Cover Necks, release the clips as shown and slide downwards to
detach.
REMOVING THE REAR COVER
1. Remove 1 screw from AC Cover, release upper clip and lift upwards to
detach.
2. Locate and remove 3 screws from the Rear Cover, SC then lift to
detach.
Rear Cover, SCRear Cover, SC
3. Locate and remove all screws from the Rear Cover.
XBR-55X850A XBR-65X850A

XBR-55X850A/65X850A 13
SECTION 3 - REPAIR INFORMATION
2. Remove all screws from the Main Board and lift to detach.
3. Install the new Main Board, screws and all connectors.
4. Update the Software.
After ALL repairs UPDATE the SOFTWARE to the latest version.
Instructions are included with the Software package on the Sony
Authorized Service Portal website.
a. Insert the USB device with the latest Software into the TV.
b. Press
POWER
to turn on the TV.
c. Wait until the Software update is complete and the TV turns OFF.
5. Access Service Mode by pressing the following buttons within 1 second
of each other:
DISPLAY
Channel 5Volume +
POWER
6. When the DIGITAL Menu appears, press 2until 002 MODEL category
displays.
7. Press 1until 001 DEST item displays.
DIGITAL SERVICE
002 MODEL
001 DEST ATSC-UC_BASE
CAUTION: If the incorrect Destination Data Value is selected, it may
corrupt the Sofware requiring a Main Board replacement.
4. Grasp the Rear Cover on the areas shown and carefully lift to detach.
CAUTION: To avoid any damage and/or deformation to the Rear Cover,
please refer to the following illustration.
Avoid grabbing
(Sharp edge, easy to deform).
To avoid any damage, do not hit
the Smart Core when removing
the Rear Cover.
Grab with care
(Sharp edge).
Ok to grab
(Curled edge).
REPLACING THE MAIN BOARD
The Main Board used in this model is available for repair. For Part Number
information refer to Section 4 - Exploded View/Part Number Information on
page 18.
1. Disconnect all connectors and slide Bracket Side and Bracket Under to
remove from Main Board.
Bracket UnderBracket Under
Bracket Side
Bracket Side

XBR-55X850A/65X850A 14
SECTION 3 - REPAIR INFORMATION
8. 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 Desnaon Data Value
XBR-55X850A US/CND ATSC-UC_BASE
XBR-65X850A US/CND ATSC-UC_BASE
9. Press
MUTING
then 0 to save the changes.
DIGITAL SERVICE
002 MODEL
001 DEST
WRITE
ATSC-UC_BASE
10. Press 1until 002 MODELNAME displays.
DIGITAL SERVICE
002 MODEL
002 MODELNAME_________
11. 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.
12. Press
MUTING
then 0 to save the changes.
DIGITAL SERVICE
002 MODEL
002 MODELNAMEXBR-55X850A
WRITE
13. Locate the Serial Number for the TV on the side of the Rear Cover.
MODEL NO
XBR-55X850A
SERIAL NO
6000001
14. Press 1until 003 SERIAL item displays.
DIGITAL SERVICE
002 MODEL
003 SERIAL
15. Press 0 to display the Serial Number Edit option.
DIGITAL (MODEL) SERVICE
SerialNumberEdit
*1 SerialNumber
16. 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.

XBR-55X850A/65X850A 15
SECTION 3 - REPAIR INFORMATION
17. 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.
18. Press to save the Serial Number.
DIGITAL (MODEL) SERVICE
SerialNumberEdit
*1 SerialNumber
6000001 WRITE
19. Clear the Self Check screen.
a. Press
POWER
to exit Service Mode.
b. Press the following buttons on the Remote Commander within
1 second of each other:
DISPLAY
Channel 5Volume
-
POWER
SELF CHECK
000 RESERVED --------------------- ------------------------------------------ 00
000 RESERVED --------------------- ------------------------------------------ 00
002 MAIN_POWE --------------------- ------------------------------------------ 00
003 DC_ALERT --------------------- ------------------------------------------ 00
003 AUD_PROT --------------------- ------------------------------------------00
003 HDMI_EQ --------------------- --------------------- --------------------- 00
003 TU_DEMOD --------------------- --------------------- --------------------- 00
004 VLED --------------------- ------------------------------------------00
004 LD_ERR --------------------- ------------------------------------------00
005 HFR_ERR --------------------- ------------------------------------------ 00
005 TCON_ERR 120123132522 120123113645--------------------- 02
005 P_ID-ERR --------------------- --------------------- --------------------- 00
006 BACKLITE --------------------- ----------------------------------------- 00
007 TEMP_ERR --------------------- --------------------- --------------------- 00
007 FAN_ERR --------------------- ------------------------------------------00
010 EMITTER --------------------- --------------------- --------------------- 00
101 VPC_WDT --------------------- --------------------- --------------------- 00
102 MEPS_WDT --------------------- ------------------------------------------ 00
103 HOST_WDT --------------------- ------------------------------------------ 00
104 STBY_WDT --------------------- ------------------------------------------00
00345 000333 06789
Error Count
c. To clear the error history and error count press 80.
d. Press
POWER
to exit Self Check Mode.
20. Cycle AC Power (Unplug and plug AC Cord from the outlet).

XBR-55X850A/65X850A 16
SECTION 3 - REPAIR INFORMATION
REPLACING THE POWER SUPPLY BOARD
1. Disconnect all connectors from the Power Supply Boards, then remove
all screws from the board to be replaced and lift to detach.
2. Install the new Power Supply Board, screws and connectors.
3. Update the Software.
After ALL repairs UPDATE the SOFTWARE to the latest version.
Instructions are included with the Software package on the Sony
Authorized Service Portal website.
a. Insert the USB device with the latest Software into the TV.
b. Press
POWER
to turn on the TV.
c. Wait until the Software update is complete and the TV turns OFF.
REMOVING THE SPEAKERS
1. Disconnect 1 connector from the Speaker Box and lift to detach.
2. Disconnect 1 connector from Speaker Box (Woofer), then remove 3
screws and lift to detach.
3. Remove 4 screws from Bracket SP as shown, then lift to detach.
Bracket SPBracket SP
REPLACING THE SWITCH UNIT
1. Disconnect connector from Switch Unit, remove 2 screws and lift to
detach.
2. Install the new Switch Unit, screws and the connector.