Sony XBR-79X900B Schematic
Self Diagnosis
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
REPAIR MANUAL
Supported model
RB2T Chassis
Segment: HJ
MODEL COMMANDER DESTINATION
XBR-79X900B RM-YD102 / RMF-YD003 US/CND/LA/MX
Version Date Subject
1.0 06/05/2014 Original Manual Release Date.
2.0 07/11/2014 Updated Adjustments Procedure on Section 3 - Repair Information. Pages 13-21 replaced.
XBR-79X900B
LCD Digital Color TV
9-888-634-02
TABLE OF CONTENTS
Cautions and Warnings ...................................................................................ii
Section 1 - Specications and Layouts ......................................................... 1
Specications ................................................................................................1
Checking the Accessories ............................................................................. 1
Board Layout .................................................................................................2
XBR-79X900B .......................................................................................................2
Smart Core Block...................................................................................................2
Wire Dressing ................................................................................................ 3
XBR-79X900B .......................................................................................................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 Distortion Flowchart ................................................................................... 11
No 3D Viewing .....................................................................................................12
Section 3 - Repair Information ...................................................................... 13
Repairing the TV ..........................................................................................13
Removing the Table-Top Stand ............................................................................13
Removing the Rear Cover ...................................................................................13
Replacing the Main Board and Tuner Board ...............................................14
Replacing the K Board ................................................................................18
Replacing the Power Supply Boards ........................................................... 18
Replacing the Switch Unit ...........................................................................18
Replacing the Camera Module .................................................................... 19
Removing the Speakers ..............................................................................19
Removing the Smart Core Block .................................................................20
Section 4 - Exploded View/Part Number Information ................................. 22
Table-Top Stand ..........................................................................................22
XBR-79X900B .............................................................................................23
Smart Core Block.................................................................................................27
Connectors ..................................................................................................28
Screws ......................................................................................................... 29
Section 5 - Accessories/Part Number Information .....................................30
Accessories and Packaging ........................................................................30
Miscellaneous .............................................................................................. 30
Optional Accessories ................................................................................... 30
Remote Commander ...................................................................................30
Appendix A: Encryption Key Components ...............................................A-1
XBR-79X900B i
CAUTIONS AND WARNINGS
CAUTION!!
These servicing instructions are for use by qualied 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 qualied 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 identied with shading and
schematic diagrams and the parts list. It is essential that these critical parts
be replaced only with the part number specied 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.
!
mark on the
ATTENTION!!
ATTENTION!!
Ces instructions de service sont à l’usage du personnel de service qualié
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
qualié faire ainsi.
ALERTE!!
An 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 identies par une trame et par une marque
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 identies dans le present manuel. Suivre ces procedures lors de
chaque remplacement de composants critiques, ou lorsqu’un mauvais
fonctionnement suspecte.
!
sur les
For safety reasons, component level repair of the Power Supply Boards
and/or the Inverter Boards is prohibited.
Pour des raisons de sécurité, Interdire de réparer ou remplacer les
composantes dans les blocs d’alimentation et/ou sur les modules d’inverseur.
ATTENTION!!
XBR-79X900B ii
CAUTIONS AND WARNINGS
To Exposed Metal
Parts on Set
0.15 µF
Earth Ground
AC
Voltmete
r
(0.75V)
Trouble Light
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”.
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.
LEAKAGE TEST
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)
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)
AC Outlet Box
XBR-79X900B iii
1. A commercial leakage tester.
Follow the manufacturers’ instructions provided with the tester.
2. A battery-operated AC milliammeter.
Figure B. Checking for earth ground.
* Screen size, dimensions and mass are approximate values.
• Optional accessories availability depends on countries/region/TV model/stock.
• Design and specications are subject to change without notice.
• Power consumption will increase when Port Replicator is connected to the TV.
• This TV set incorporates MHL 2 for HDMI IN 4/MHL and MHL 3 for HDMI IN 2/MHL.
Model name XBR-79X900B
Power and others
Power requirement
110 V - 240 V AC, 50/60 Hz (U.S.A./Canada 120 V AC, 60 Hz)
Power
consumption
in use
in standby
Screen size* (cm)
(inches measured diagonally)
78,6 inches
(79 class)
Display resolution
Output Rating
Dimensions
*
Stand width
*
with stand
without stand
wall-mount
hole pattern
400 x 300
wall-mount
screw size
M6 (8-12 mm)
Mass*
with stand
without stand
USB 1/3
USB 2
MHL (HDMI IN 2/4)
5 V, 500 mA MAX
5 V, 800 mA MAX
5 V, 900 mA MAX
408 W
Less than 0.2 W with 120 V AC and less than 0.3 W with 240 V AC
3,840 dots (horizontal) × 2,160 lines (vertical)
60,9 / 134,2
59,7 / 131,5
(mm)
(inches)
(inches)
(mm)
(mm)
(mm)
TV with TableTop Stand (edge
position)
TV with Table-Top
Stand (middle
position)
(mm)
(mm)
(kg/lb)
(kg/lb)
Others
Optional accessories
Wireless Subwoofer: SWF-BR100
MHL Cable: DLC-MC20
Passive 3D Glasses: TDG-500
2,031 × 1,109 × 442
80 × 43
3
/4 × 171/
2
80 × 41
1
/2 × 43/
8
2,029 × 1,054 × 111
80
2,031
41
5
/
8
573
SECTION 1 - SPECIFICATIONS AND LAYOUTS
SPECIFICATIONS
System
Television system
Channel coverage
Panel system
Speaker output
Wireless technology
Input/Output jacks
CABLE/ANTENNA
VIDEO IN 1
COMPONENT IN
VIDEO IN 2
HDMI IN 1/2/3/4
(Support 4K resolution)
MHL
(Common with HDMI IN 2/4)
AUDIO OUT/
DIGITAL AUDIO OUT
(OPTICAL)
LAN
USB/DLNA
Operating temperature
REMOTE
i Audio output (stereo mini jack)
NTSC: American TV standard
ATSC (8VSB terrestrial): ATSC compliant 8VSB
QAM on cable: ANSI/SCTE 07 2000 (Does not include CableCARD functionality)
Analog terrestrial: 2 - 69 / Digital terrestrial: 2 - 69
Analog Cable: 1 - 135 / Digital Cable: 1 - 135
LCD (Liquid Crystal Display) Panel, LED Backlight
12.5 W +12.5 W + 20 W + 20 W
Protocol IEEE802.11a/b/g/n
75-ohm external terminal for RF inputs
Video / Audio input (phono jacks)
BPR (vídeo componente): 1080p (60 Hz), 1080i (60 Hz), 720p (60 Hz), 480p, 480i
YP
Audio input (phono jacks)
Video input (common phono pin with Y input)
Vídeo (2D): 4096 × 2160p (60 Hz)*, 4096 × 2160p (24 Hz), 3840 × 2160p (60 Hz)*, 3840 × 2160p
(24, 25, 30 Hz),1080p (30, 60 Hz), 1080/24p, 1080i (60 Hz), 720p (30, 60 Hz), 720/24p,
480p, 480i, PC Formats
Vídeo (3D):
Frame Packing:
Side-by-Side:
Over-Under:
Audio: 5.1 channel linear PCM: 32, 44.1 and 48 kHz, 16, 20 and 24 bits, Dolby Digital
ARC (Audio Return Channel) (HDMI IN 1 only)
Video (2D): 4096 × 2160p (24 Hz)*, 3840 × 2160p (24, 25, 30 Hz)*, 1080p (60 Hz)*, 1080p (30 Hz),
1080/24p, 1080i (60 Hz), 720p (30, 60 Hz), 720/24p, 480p, 480i* HDMI IN 2 only
Video (3D):
Frame Packing:
Side-by-Side:
Over-Under:
Audio: 5.1 channel linear PCM: 32, 44.1 and 48 kHz, 16, 20 and 24 bits, Dolby Digital
Headphone jack
(supports Subwoofer out)
Digital optical jack
(Two channel linear PCM, Dolby Digital)
10BASE-T/100BASE-TX connector (Connection speed may dier depending on the network
environment. 10BASE-T/100BASE-TX communication rate and communication quality
are not guaranteed for this TV)
Refer to the i-Manual for supported formats
32 ºF – 104 ºF (0 ºC – 40 ºC)
RS232C, Serial Control mini jack; IR IN mini jack
These jacks are for receiving the external control signal
1080p (30 Hz), 1080/24p, 1080i (60 Hz), 720p (30, 60 Hz), 720/24p
1080p (60 Hz), 1080/24p, 1080i (60 Hz), 720p (60 Hz)
1080p (30, 60 Hz), 1080/24p, 1080i (60 Hz), 720p (60 Hz)
1080p (30 Hz), 1080/24p, 1080i (60 Hz), 720p (30, 60 Hz), 720/24p
1080p (60 Hz)*, 1080/24p, 1080i (60 Hz), 720p (60 Hz)
1080p (60 Hz)*, 1080p (30 Hz), 1080/24p, 1080i (60 Hz), 720p (60 Hz)* HDMI IN 2 only
* YCbCr 4:2:0 / 8 bit
CHECKING THE ACCESSORIES
- IR Remote Control (1)*
- Size AAA batteries (2)
- Wall-Mount Attachment (M6) (long) (2)
- Wall-Mount Attachment (M5) (short) (2)
- IR Blaster (1)
- Operating Instructions and other documents
- Port Replicator accessories (set)
- Camera cover (1)
- Cable clamper (3)
* Refer to the model name printed on the remote
XBR-79X900B 1
BOARD LAYOUT
HSC2 BOARD
WIRELESS
LAN CARD
BT MODULE
SECTION 1 - SPECIFICATIONS AND LAYOUTS
XBR-79X900B
POWER SUPPLY
POWER SUPPLY
(G4A BOARD)
(G3 BOARD)
LD BOARD
T CON
K1 BOARD
SMART CORE
SMART CORE BLOCK
MAIN BOARD
(BAXF BOARD)
SWITCH
UNIT
TUNER BOARD
(TUS BOARD)
XBR-79X900B 2
WIRE DRESSING
SECTION 1 - SPECIFICATIONS AND LAYOUTS
XBR-79X900B
SMART CORE BLOCK
XBR-79X900B 3
SECTION 2 - TROUBLESHOOTING
Self Diagnosis
*Format of Error History = YYMMDDhhmmss example 120123132522= Jan 23, 2012 13:25:22 (1:25:22PM)
Supported model
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 conrming 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.
DISPLAY
POWER
to turn on the TV and then turn it off again.
Channel 5 Volume - Power
I/0
1. Press
2. Press the following buttons on the Remote Commander within 1
second of each other:
NOTE: This differs from accessing Service Adjustments Mode (Volume +).
StandBy LED
Blink Count
Diagnosis
Item
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
Panel operation time by hour (MAX:65535)
Panel operation time by hour (MAX:65535)
Boot count (MAX:65535)
Boot count (MAX:65535)
Total operation time by hour (MAX:65535)
Total operation time by hour (MAX:65535)
Date and Time Display*
Error Count
(00-99)
XBR-79X900B 4
NOTE: date and time must be set for this to work
SAMPLE SELF CHECK DIAGNOSIS PAGE
SECTION 2 - TROUBLESHOOTING
1. Confirm the symptom from the customer. Red Dot: (Primary) Most likely defective part.
3. Bring the primary component listed for that symptom.
▲
▲ ▲
▲ ▲
▲ ▲ ▲
▲
▲
▲
4. Follow the associated flowcharts in the Training Manual to isolate the board.
*NOTE: REFER TO LCD PANELS SERVICE MANUAL IN REFERENCE LIBRARY DATABASE
FOR CORRECT REPLACEMENT PARTS BASED ON SERIAL NUMBER.
TRIAGE CHART
Use this general Triage Chart to determine what may possibly be causing the error before going out to the customers location.
2. Select that symptom from the chart. Blue Triangle: (Secondary) Possible defective part.
5. Chart Color Code.
Board Reference
MAIN BOARD
TUNER BOARD
K BOARD
POWER SUPPLY
H BOARD
SPEAKER
CAMERA MODULE
MIC MODULE
WIFI
BT MODULE
LD BOARD
LVDS FFC
TCON
LCD PANEL
Problem
Symptoms - Shutdown. Power LED blinking
red diagnostics sequences
2X 3X 4X
5X 6X 7X 8X 9X
No White
▲ ▲
▲
▲ ▲
▲
▲
▲ ▲
BACKLIGHT
▲
TEMP
SOFTWARE
POWER
LD TCON
POWER
AUDIO
LOCAL I2C
4K
UNIQUE
(ROGUE/
SCORPIO
4K FRC)
No
Power
Power
LED
Video
Steady
No Video
lines or
One of
dots
Inputs
▲
▲ ▲
▲ ▲
No Video
All Inputs
▲
▲
Remote
No Remote
(IR RC)
Network
Wireless
can't
connect
Bluetooth
can't
connect
Audio
No
Audio
▲
▲
Skype
Can’t
work
▲
▲
Smart
Core
No LED
To access the most recent version of the Triage documents for the models listed in this manual, login into the Sony Authorized Service Portal
at http://www.sony.com/asp.
XBR-79X900B 5
FLOWCHARTS AND DIAGRAMS
OVERALL BLOCK DIAGRAM
MAIN BOARD
SECTION 2 - TROUBLESHOOTING
K BOARD
AUDIO
AMP
1
L
R
HDMI 1 / MHL
HDMI 2 /ARC
HDMI 3
HDMI 4
ETHERNET
CAMERA
VIDEO 1 CVBS
VIDEO 2 CVBS/COMP
RF
USB
USB
ETHER
USB
HUB
USB
HUB
TUNER BOARD
TUNER
SMART CORE
PHY
HDMI
SWITCH
EQ
AUDIO
A/V
DECODER
VIDEO
PROCESS
TUNER
SWITCH
DEMODULATOR
UNIT
ADC / DACAMP
WIFIMIC
IR RX
LED’s
HIR
AUDIO
AMP
BAXF
HSC2
SWITCH
UNIT
BT
AMP
2
HEADPHONES
OUT
OPTICAL
AUDIO OUT
HFR
TCON
LED BACKLIGHTS
LOCAL DIMMING
L
R
LCD PANEL
LD
AC IN
POWER SUPPLY
G4A
POWER SUPPLY
G3
XBR-79X900B 6
POWER AND CONTROL BLOCK DIAGRAM
DIGITAL_STBY 2 18 27 2 AC_OFF_DET
BL_ERR 3 20 26 3 TCON_ON
NC 4 NC 25 4 STBY+3.3V
BL_ON 5 19 20 5 T_CON_VCC12V
GND 6 4 17 6 REG+12V
GND 7 5 16 7 REG+12V
GND 8 6 15 8 REG+12V
GND 9 14 NC 9 LDOSLAT
GND 10 13 NC 10 LDOGEMIT
GND 11 12 NC 11 LD_STBY
REG12V 12 1 11 12 GND
REG12V 13 2 10 13 GND
REG12V 14 3 9 14 GND
REG12V 15 8 NC 15 LDOSCLK
REG12V 16 7 NC 16 LDOSWDATA
REG12V 17 6 NC 17 GND_LD
T-CON_VCC12V 18 4 2 18 DIGITAL_STBY
T-CON_VCC12V 19 5 5 19 BL_ON
T-CON_VCC12V 20 5 3 20 BL_ERR
T-CON_VCC12V 21 3
T-CON_GND 22 1
T-CON_GND 24 NC 22 1 GND
STBY_3.3V 25 4 23 2 GND
T-CON_ON 26 3 21 3 PWR Power V 12 IN
AC_OFF_DET 27 2 18 4 PWR Power V 12 IN
POWER_ON 28 1 19 5 PWR Power V 12 IN
AC-L
2
13 2 PVDD(AU)
14 3 PVDD(AU)
LD_ERR 2 2 8 6 GND(AU)
DIGITAL_STBY 3 3
BL_ON 4 4
GND 5 5
REG12V 6 6
AC-L 3 3
CN6101
AC-L 3 3
BL_ERR 1 1
LD_ERR 2 2
DIGITAL_STBY 3 3
BL_ON 4 4
GND 5 5
REG12V 6 6
VLED_VCC 2 13 NC 2 SA_REF_L
VLED_VCC 3 12 12 3 GL_CTRL
VLED_VCC 4 11 11 4 LD_ERR
NC 5 NC 10 5 VLED_GND
VLED_GND 6 9 9 6 VLED_GND
VLED_GND 7 8 8 7 VLED_GND
VLED_GND 8 7 7 8 VLED_GND
VLED_GND 9 6 6 9 VLED_GND
SENSE_GND 10 5 NC 10 SA_REF_H
LD_ERR 11 4 4 11 VLED_VCC
GL_CTRL 12 3 3 12 VLED_VCC
NC 13 NC 2 13 VLED_VCC
REG12V 14 1 1 14 VLED_VCC
VLED_VCC 2 NC
VLED_VCC 3 NC
VLED_VCC 4 NC
NC 5 NC
VLED_GND 6 NC
VLED_GND 7 NC
VLED_GND 8 NC
VLED_GND 9 NC
SECTION 2 - TROUBLESHOOTING
POWER SUPPLY
CN6401
NC 1 NC 28 1 POWER_ON
T-CON_GND 23 2 T-CON
AC_IN CN6101 K0 - CN4801
1
AC-N
CN6402 6 4 GND
BL_ERR 1 1 7 5 GND
CN6102
AC-N 1 1
12 1 PVDD(AU)
MAIN BOARD
CN9700 - Main Board
XBR-79X900B 7
AC-N 1 1
CN6603
CN6601
VLED_VCC 1 14 14 1 SET_12V
CN6602
VLED_VCC 1 NC
LD - CN2003
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