Sony Bravia XBR-55X850C User manual

SERVICE MANUAL
Version Date Subject
1.0 3/2015 Original manual issue.
LCD TV
9-888-573-01
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
ORIGINAL MANUAL ISSUE DATE: 3/2015 GN1T CHASSIS
Segment: XF

SERVICE MANUAL
LCD TV
9-888-573-01
GN1T CHASSIS
Segment: XF

MODEL COLOR COMMANDER DEST.
XBR-55X850C Black RMF-TX100U (LA1)
RMT-TX100U PUERTO RICO
MX
CHILE, PERU
(UC2)
US/CND
XBR-55X855C Silver RMF-TX100U (BR6)
RMT-TX100B BRAZIL
Black RMF-TX100U (CR1)
RMT-TX100B COSTA RICA
(ECU)
ECUADOR
(LA8)
CHILE
PERU
VENEZUELA
XBR-55X857C Black RMF-TX100U (CO1)
RMT-TX100B COLOMBIA
XBR-65X850C Black RMF-TX100U (UC2)
RMT-TX100U US/CND
XBR-55/65X850C, 855C, 857C, 75X850C, 855C 3
MODEL LIST
MODEL COLOR COMMANDER DEST.
XBR-65X855C Silver RMF-TX100U (BR6)
RMT-TX100B BRAZIL
Black RMF-TX100U (AR4)
RMT-TX100B ARGENTINA
(CR1)
COSTA RICA
(LA8)
CHILE
PERU
VENEZUELA
XBR-65X857C Black RMF-TX100B (CO1)
RMT-TX100B COLOMBIA
XBR-75X850C Black RMF-TX100U (LA1)
RMT-TX100U PUERTO RICO
MX
CHILE, PERU
(UC2)
US/CND
XBR-75X855C Silver RMF-TX100U (BR6)
RMT-TX100B BRAZIL

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 4
WARNINGS AND CAUTIONS - ENGLISH
CAUTION
These servicing instructions are for use by qualified 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 qualified to do so.
WARNING!!
An isolation transformer should be used during any service to avoid possible shock hazard, because of live chassis.
The chassis of this receiver is directly connected to the ac power line.
CARRYING THE TV
Be sure to follow these guidelines to protect your property and avoid causing serious injury.
• Carry the TV with an adequate number of people; larger size TVs require two or more people.
• Correct hand placement while carrying the TV is very important for safety and to avoid damages.
SAFETY-RELATED COMPONENT WARNING!!
Components identified by shading and mark on the schematic diagrams, exploded views, and in the parts list are critical for safe operation. Replace these components with Sony
parts whose part numbers appear as shown in this manual or in supplements published by Sony. Circuit adjustments that are critical for safe operation are identified in this manual.
Follow these procedures whenever critical components are replaced or improper operation is suspected.
CAUTION ABOUT THE LITHIUM BATTERY
• Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type.
•Outer case broken battery should not contact to water.

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 5
WARNINGS AND CAUTIONS - FRENCH
ATTENTION!!
Ces instructions de service sont à l’usage du personnel de service qualifi 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 qualifi é faire ainsi.
WARNING!!
Afi n d’eviter tout risque d’electrocution provenant d’un chássis sous tension, un transformateur d’isolement doit etre utilisé lors de tout dépannage. Le chássis de ce récepteur est
directement raccordé à l’alimentation du secteur.
POUR TRANSPORTER LE TÉLÉVISEUR
Tenez compte de ce qui suit pendant l’installation du téléviseur :
• Débranchez tous les câbles avant de transporter le téléviseur.
• Transportez le téléviseur avec le nombre de personnes approprié ; un téléviseur de grande taille doit être transporté par au moins deux personnes.
• Lors du transport du téléviseur, l’emplacement des mains est très important pour votre sécurité, ainsi que pour éviter de causer des dommages.
ALERTE!!
Afi n d’eviter tout risque d’electrocution provenant d’un chassis sous tension, un transformateur d’isolement doit etre utilise lors de tout depannage. Le chassis de ce recepteur est
directement raccorde a l’alimentation du secteur.
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
Les composants identifi 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 identifi es dans le present manuel. Suivre ces procedures lors de chaque remplacement de
composants critiques, ou lorsqu’un mauvais fonctionnement suspecte.

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 6
WARNINGS AND CAUTIONS
USE CAUTION WHEN HANDLING THE LCD PANEL
When repairing the LCD panel, be sure you are grounded by using a wrist band.
When repairing the LCD panel on the wall, the LCD panel must be secured using the 4 mounting holes on the rear cover.
1) Do not press on the panel or frame edge to avoid the risk of electric shock.
2) Do not scratch or press on the panel with any sharp objects.
3) Do not leave the module in high temperatures or in areas of high humidity for an extended period of time.
4) Do not expose the LCD panel to direct sunlight.
5) Avoid contact with water. It may cause a short circuit within the module.
6) Disconnect the AC power when replacing the backlight (CCFL) or inverter circuit. (High voltage occurs at the inverter circuit at 650Vrms.)
7) Always clean the LCD panel with a soft cloth material.
8) Use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short.
9) Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
10) It is recommended not to exceed 1 hour of Power-On nor Burn-in period with LCD panel face down condition, in repair activity.

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 7
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 below.
8. For safety reasons, repairing the Power board and/or Inverter board is prohibited.

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 8
SAFETY CHECK-OUT
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, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers’
instructions to use these instructions.
2. A battery-operated AC milliampmeter. The Data Precision 245 digital multimeter is suitable for this job.
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.
The Simpson’s 250 and Sanwa SH-63TRD are examples of passive VOMs that are suitable. Nearly all
battery-operated digital multimeters that have a 2 VAC range are suitable (see Figure A).
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet boxes is also
at earth ground.
If the retaining screw is to be used as your earth ground, verify that it is at ground by measuring the resistance
between it and a cold-water pipe with an ohmmeter. The reading should be zero ohms.
If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble- light (not a neon 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).

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 9
SELF DIAGNOSIS FUNCTION
DIAGNOSTIC TEST INDICATORS
When an error occurs, the Smart Core Red LED will flash a set number of times to indicate the possible cause of the problem.
If there is more than one error, the LED will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen.
If the screen displays a “0”, no error has occurred .
The units in this manual contain a self-diagnostic function. If an error occurs, the Smart Core Red LED will automatically begin to flash.
The number of times the LED flashes translates to a probable source of the problem.
A definition of the Smart Core Red LED flash indicators is listed in the instruction manual for the user’s knowledge and reference.
If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these
problems occur.
RED LED blinking count Detection Items
2x <G/B> Main 12V over voltage [MAIN_POWER]
3x
<B> Main 5.0V failure [DC_ALERT]
<B/S> Audio amp. protection [AUD_ERR]
<B> Tuner or demodulator I2C No ACK [TU_DEMOD]
<B> HDMI Switch/Equalizer I2C communication error [HDMI_EQ]
4x None
5x <P/T/G/B> Panel ID EEPROM I2C No ACK (Also panel power failure is a suspect) [P_ID_ERR]
<T> TCon IC I2C communication error [TCON_ERR]
6x <G/P/B> Backlight failure [BACKLIGHT]
7x Over temperature protection [TEMP_ERR] <B> Temp. sensor I2C No ACK [TEMP_ERR]
<B> V By One lock error between Main device and 4KBE device [4KBE_ERR]
8x <B> Software error [SW_ERR]
<G>: Power supply board, <B>: Main board, <T>: Tcon board,
<P>: Panel module , <S>: Speaker , <A>: Power Adapter
Red italic: detect at startup sequence only.

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 10
SELF DIAGNOSIS FUNCTION
[SELF DIAGNOSTIC SCREEN DISPLAY]
SELF CHECK
<<
002 MAIN_POWER 000000000000 000000000000 000000000000 000
003 DC_ALERT 000000000000 000000000000 000000000000 000
003 AUD_ERR 150101000018 150101000018 150101000018 003
003 HDMI_EQ 150101000123 150101000045 150101000045 003
003 TU_DEMOD 150101000218 150101000223 150101000105 003
004 LD_ERR 000000000000 000000000000 000000000000 000
004 BCM_ERR 000000000000 000000000000 000000000000 000
005 TCON_ERR 150101000504 000000000000 000000000000 001
005 P_ID_ERR 000000000000 000000000000 000000000000 000
006 BACKLIGHT ERR 000000000000 000000000000 000000000000 000
007 TEMP_ERR 150101000200 150101000002 000000000000 002
007 4KBE_ERR 000000000000 000000000000 000000000000 000
008 SW_ERR 000000000000 000000000000 000000000000 000
Back
00005 00414 00002
[Home]Exit
•Panel Operation Time is recorded every
30 min, but Total Operation Time is recorded every 1 hr.
Therefore, the panel op. time might become larger than
the total op. time.
Smart Core Red LED
blinking count
Error item Naming Error count
Total Operation Time [hr] –Boot Count –Panel Operation Time [hr]
Format of error timestamps
YYMMDDhhmmss (in UTC)
Example:
120823132523 -> Aug 23 2012 13:25:23 UTC
* Only when time is set, an error timestamp
is saved.
Error
timestamp for
last recorded
error
Error
timestamp for
second last
recorded error
Error
timestamp
for 3rd last
recorded
error

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 11
SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurrences of failure for
confirmation on the screen:
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
SELF DIAGNOSIS FUNCTION
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen.
After you have completed the repairs, clear the result display to “0”.
Clearing the Self Check Diagnostic List
Panel operation time : Press the Channel 7 => Channel 0 .
Exiting the Self-diagnostic screen
To exit the Self Diagnostic screen, Power off & on or Push the <Home> button.

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 12
SEC 1. DISASSEMBLY
• There are clutch in the yellow frame[ ]. Therefore please be careful in the case of the disassembly or assembly of parts.

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 13
DISASSEMBLY
1-1-1. STAND
1-1. XBR-55X850C/855C/857C
STAND
4 screws (SCREW, +PSW M5X16) P/N: 4-449-743-01

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 14
DISASSEMBLY
1-1. XBR-55X850C/855C/857C
1-1-2. LABEL, UNDER TERMINAL AND LABEL, REAR TERMINAL AND LABEL, SIDE TERMINAL (L) AND LABEL, CI
LABEL, REAR TERMINAL
LABEL, UNDER TERMINAL
LABEL, SIDE TERMINAL (L)
LABEL, CI
(CO1 ONLY)

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 15
DISASSEMBLY
1-1. XBR-55X850C/855C/857C
1-1-3. AC COVER AND POWER SUPPLY CORD
AC COVER
1
2 3 4 POWER SUPPLY CORD
Screw (SCREW +PSW M4X10) P/N: 4-159-298-01
5

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 16
DISASSEMBLY
1-1. XBR-55X850C/855C/857C
1-1-4. REAR COVER (L HRN) A
1
2
3
15 screws (SCREW , +PWH M3X6) P/N: 4-452-935-11
8 screws (SCREW, +BVTP 4X12 TYPE2 IT-3) P/N: 2-580-639-01
REAR COVER (L HRN) A

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 17
DISASSEMBLY
1-1-5. TAPE AND WIRE DRESSING
1-1. XBR-55X850C/855C/857C
TAPE
TAPE

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 18
DISASSEMBLY
1-1-6. TAPE AND WIRE DRESSING
1-1. XBR-55X850C/855C/857C
TAPE
TAPE

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 19
DISASSEMBLY
1-1. XBR-55X850C/855C/857C
1-1-7. SPEAKER BOX ASSY (L)
1
2 3
SPEAKER BOX ASSY (L)

XBR-55/65X850C, 855C, 857C, 75X850C, 855C 20
DISASSEMBLY
1-1-8. SPEAKER BOX ASSY (R)
1-1. XBR-55X850C/855C/857C
1
2 3
SPEAKER BOX ASSY (R)