Sony KDL-43W7 C Series User manual

Version Date Subject
1 3/2015 1st Issue.
2 4/2015 Update Connecting Diagrams pg 89 - 91.
3 4/2015 Update 55” Circuit Board Location pg 82.
4 7/2015 Updatesfor : 1. Adjustment Section ( pg 76 )
2. T/shooting : Remove Tuner related checking ( pg20 )
3. Triage Chart : Delete Local I2C from 3x blinking ( pg 10 )
4. Self Diagnosis:Remove TU_DEMOD error from 3x blinking& add remark (pg 9)
LCD TV
9-888-172-04
For SM - Unique , please refer :
9-888-172-Ax( America )
9-888-172-Ex ( Europe )
9-888-172-Px ( Pan Asia )
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
SERVICE MANUAL (COMMON)
GN1GCHASSIS
Segment: XM-A

LCD TV
SERVICE MANUAL (COMMON)
GN1GCHASSIS
Segment: XM-A

MODEL LIST
THIS SERVICE MANUAL CONTAINS COMMON INFORMATIONFOR BELOW REGIONS AND MODELS:
REGION
ASIA EUROPE AMERICA
MODEL
KDL-43W7*C KDL-50W7*C KDL-55W7*C
KDL-43W8*C KDL-50W8*C KDL-55W8*C

Section Title
Page
1. SAFETY NOTES
1
-1. Warningsand Caution………………………………………………………. 5
1
-2. Caution Handlingof LCD Panel ......…………….................................... 5
1
-3. Caution About the Lithium Batter………………………………………….. 6
1
-4. Safety Check Out ........................……………......................................... 6
1
-5. Leakage Test .......................................................................................... 6
1
-6. How to Find a Good Earth Ground………………………………………… 6
1
-7. Lead Free Information….…………………………………………………… 7
1
-8. Handlingthe Flexible Flat Cable (FFC)……………………………………. 7
2. SELF DIAGNOSTICFUNCTION
2
-1.
Overview of Control Buttons...................................................................
8
2
-2. LED Display Control ………..................................................................... 9
2
-3. LED Pattern………………........................................................................ 9
2
-4. Standby LED Error Display…………………………………………………. 9
2
-5. Triage Chart ............................................................................................ 10
3. TROUBLE SHOOTING
3
-1. No Power…….……………………………………………………………….. 11
3
-2. LED Blinking……………….………………………………………............... 18
3
-3. No Sound……………………………......................................................... 30
3
-4. No Picture................................................................................................. 42
3
-5. Side Buttons Malfunction……………………………………………………. 66
3
-6. IR Remote CommanderMalfunction……………………………………… 68
3
-7. Light Sensor Error…………………………………………………………. 70
3
-8. Network Malfunction:Ethernet (Wired)……………………………………. 72
3
-9. WirelessNetwork Malfunction……………………………………………. 73
3
-10. Bluetooth Malfunction……………………………………………………….. 75
4
TABLE OF CONTENTS
Please refer ServiceManual – Unique for below information:
-Safety Warnings
-WireDressing
-Circuit Board Location
-Disassembly and ExplodedView.
Section Title Page
4. SERVICE ADJUSTMENTS
4-1.
AccessingService Mode
..................................................................... 76
4-2.
Accessing Software Version................................................................
76
4-3.
Accessing Serial Number Edit…………………………………..…….....
77
4-4.
AccessingModel Number Setting
…………………………………........ 78
4-5.
W/BAdjustmentvia Service Mode
.…………………………................ 79
4-6.
WB/Mura/CUCdata transfervia Service
Mode…………………........ 79
4-7.
HDD PerformanceCheck…………………….......................................
80
4-8.
HDD Re
-Register……………………………......................................... 80
4-9.
AccessingSelf DiagnosticMenu………………………………………..
81
4-10.
Summaryof Service Control………………………………………........
81
5. DIAGRAMS
5-1.
CircuitBoard Location
......................................................................... 82
5-2.
Block Diagram
………………………………………...................... 83
5-3.
Connector Diagram
………………………………………...................... 89

5
SAFETY NOTES
SECTION 1
1-2. Caution Handling of LCD Panel
Whenrepairing the LCD Panel, make sure you are groundedwith a wrist band.
Whenrepairing the LCD Panel on the wall, the panel must be securedusing the
4 mounting holes on the rear cover.
1) Do not press the panel or frameedge 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 temperature or in areas of high humidity for
an extendedperiod of time.
4) Do not exposethe LCD panel to direct sunlight.
5) Avoid contactwith water. It may cause short circuit within the module.
6) Disconnect the AC power when replacing the backlight (CCFL) or
inverter circuit. (High voltageoccurs at the inverter circuit at 650Vrms)
7) Always clean the LCD panel with a softcloth material.
8) Use care when handling the wires or connectorsof the inverter circuit.
Damaging the wires may cause a short circuit.
9) Protect the panel fromESD to avoid damaging the electroniccircuit (C-MOS).
10) During the repair, DO NOT leave the Power On or Burn-in period formore
than 1 hour while the TV is face down on a cloth.
1-1. Warnings and Caution
1) These servicing instructionsare for use by qualified service personnel only.
2) To reduce the risk of electric shock, do not performany servicing other than
that contained in the operating instructionsunless you are qualified to do so.
3) An isolation transformershould be used during any service to avoid
Possible shock hazard, because of live chassis. The chassis of this receiver is
directly connectedto the ac power line.
4) Be sure to follow these guidelinesto protect your propertyand
avoid causing serious injury :
• Carry the TV with an adequatenumber 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.
5) Componentsidentifiedby shading and mark on the exploded views,
and in the parts list are critical for safe operation.Replace these
componentswith Sony parts whose part numbers appear as shown in this
manualor in supplementspublished by Sony. Circuit adjustmentsthat are
critical for safe operation are identifiedin this manual. Follow these
procedureswhenevercritical componentsare replaced or improper
operation is suspected.
!
Figure 1. TV is faced down on a clothduring repair.

6
3) Measuring the voltage drop across a resistorby meansof a VOM or battery
operatedAC voltmeter.The 'limit' indication is 0.75V so analog metersmust
havean accuratelow voltage scale. The SIMPSON'S 250 and SANWASH-
63TRD are examples of passive VOMs that are suitable. Nearly all battery
operateddigital multimeterthat have a 2 VAC range are suitable.
(see Figure 2.)
1-4. Safety Check-Out
Aftercorrecting the original service problem, performthe following
safetychecks beforereleasing the set to the customer:-
1) Check the area of your repair forunsoldered or poorly soldered
connections.Check the entire board surface for solder splashes and bridges.
2) Check the inter board wiring to ensure that no wires are pinched or
contact high-wattageresistors.
3)Check all control knobs, shields, covers, ground straps and mounting
hardware have been replaced. Be absolutely certain you have replaced all
the insulators.
4) Look for unauthorizedreplacement parts, particularly transistorsthat
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, metalized knobs, screws and all
other exposed metal parts for AC leakage. Check leakage test as described
next.
8. For safety reasons, repairing the Power board and/or Inverter board is
prohibited.
Figure 2. AC voltmeterto check AC leakage
Safety Notes
1-3. Caution About the Lithium Battery
1) Danger of explosion if batteryis incorrectly replaced. Replaceonly with
the same or equivalent type.
2) Outercase broken batteryshould not contactto water.
1-5.Leakage Test
The AC leakage fromany exposedmetal part to earth ground and fromall
exposedmetal parts to any exposedmetal part having a return to chassis must
not exceed 0.5mA (500 microamperes).
Leakagecurrent can be measuredby any one of the three methods:-
1) A commercial leakage testersuch as the SIMPSON 229 or RCA WT540A.
Follow the manufacturersinstructions to use those instructions.
2) A battery-operatedAC milliampmeter The DATA PRECISION 245 digital
multimeteris suitable forthis job.
1-6. How to Find a Good Earth Ground
1) A cold-water pipe is a guaranteedearth ground;the cover-plate retaining
screw on most AC outletboxes is also at earth ground.
2) If the retainingscrew is to be used as your earth ground,verify that it is at
groundby measuring the resistance between it and a cold-water pipe with an
ohmmeter.The reading should be zero ohms.
3) If a cold-water pipe is not accessible, connecta 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 3).
Figure 3. Checking for earth
ground.

7
Safety Notes
1-7. Lead Free Information
The circuit boards used in these models have beenprocessedusing Lead
Free Solder. The boards are identifiedby the LF logo located close to the
board designation.
Figure 4: LF Logo Figure 5: LF logo on circuit board
The servicing of theseboards requires special precautions.It is strongly
recommendedto use Lead Free Solder material in order to guaranteeoptimal
qualityof new solder joints.
1-8. Handling the FLEXIBLE FLAT CABLE (FFC)
When you insert / pull out FFC, please grasp a reinforcementboard and main
body of FFC.
Main Board Main Board
Please hold reinforcement board and
plunge it to depths. Please pull out FFC while pushing the
button of both ends at the same time.
< Insertion>
Release Button
of Connector
FFC connector broken if pull out FFC
without press and hold both Release
Button of connector. Symptom 5X blinking
will be appear due to improperly seated.
<Pullout>

SECTION 2
SELF DIAGNOSTIC FUNCTION
2-1. Overview of Control Buttons
8
Self Diagnostic Function
2-1-1.
TVCONTROLS/ TERMINALS/ INDICATOR
FRONT
REAR OF TV
Illumination lights up or blinks in different
colours according to the status of the TV
( details refer to 2-2. LED Display Control
Remote Control Sensor /
Light sensor / * IlluminationLED/ 3D
Sync Transmitter
TV
Press to
display
the TV Home
Menu.
Power
Turnthe TV on or switch to standby mode
INPUT SELECT /
SELECT/ CONFIRM
Press to select the next or
previous channel.
In TV Home Menu: buttons
willwork as (select/confirm)
CH+/- (Channel) / / ,
+/- (Volume) / / .
Press to select the next or
previous channel.
Press to adjust the volume.
In TV Home Menu: buttons
willwork as , , , .

Status White Center
LED Side RGB LED
Side Amber
LED Remarks
Power Off
( by power saving switch off and
*1) Off Off Off *1 power switch off (by side
key)
Power On White Off Off
STBY/i.LINK STBY/PC STBY
( by remote control off only ) Off Off Off
Picture Off White looping White one shot
Off
Device Connection White Cyan one shot Off
Power ON Animation White White one shot
Off
Sleep Timer/On
Timer/Reminder/REC Timer/Photo
Frame
( Power On )
White Amber One shot ->
Lit*2 Off *2 One Shot is only user
action.
On Timer/Reminder/REC Timer
( Deep Standby ) Off Off Amber After 5 minutes, side amber LED On
Self Diagnosis Off Red
Blinking Off
The number of LED blinking
indicates cause of failure
( refer to Led Error / Triage
chart)
Aging mode White Green Blinking
Off Blinking:0.5sec On / 0.5sec
Off
Software Updating white blinking white blinking off
Software Updating finish White Blue lit off
Test Reset White white blinking Amber
blinking
Error of panel ID White Green /Amber
Blinking Off Blinking:0.5sec On / 0.5sec Off
REC (SCART REC & HDD
REC/LIVE PAUSE) [AEP/J only] White Red(Pink)
One shot ->
Lit*2 Off *2 One Shot is only user
action.
ePOP/
Shop Illumination White Cyan loop Off One shot Center
White when
feature change
9
Self Diagnostic Function
2-4. Standby LED Error Display
2-2. LED Display Control
Whensafety shutdown occurs, Standby LED displayreports the cause by using the lightning
patterns as indicated below.
3.0sec 3.0sec
0.5sec
0.5sec
Example: The figure above shows LED display when SHUTDOWN is caused by Audio
Error. It repeats flashing for a specified number of times in 0.5sec/cycle and has a 3 seconds
interval of lighting off. Please note that a 3 seconds interval of lighting off is fixed regardless of abnormal state types.
2-3. LED Pattern
Smart
Core RED
LED
blinking
count
DetectionItems Board Error Item
2x Main 19.5V overvoltage [MAIN_POWE]
* This failureis not saved
Power Adapter
BMX Board Error
3x
Main 5.0V failure [DC_ALERT] BMX Board Error
Audio amp. protection [AUD_ERR] BMX Board Error
Speaker
Tuner or demodulator I2C NACK [TU_DEMOD] BMX Board Error
5x
Panel ID EEPROM I2C No ACK (Also panel
power failureis a suspect) [P_ID_ERR]
-detect at startup sequence only
Panel module
Tcon board
BMX Board Error
-FRC device I2C No ACK [FRCTC_I2C]
-FRC device Initializationfailure [FRCTC_I2C]
-detect at startup sequence only Tcon board
6x LED driver [BACKLIGHT] LED driver (LD) board
7x Over temperatureprotection[TEMP_ERR]
Temp. sensor I2C NACK [TEMP_ERR] BMX Board Error
Remarks For 3x blinking :
Tuner error don’t have Red LED blinking indication.

2-5. Triage Chart
Self Diagnostic Function
10
Secondary possible defectivepart
Not Applicable
Most likely defectivepart
Reference
Symptoms- Shutdown. Power LED
blinkingred diagnosticssequences No Power Video - missingor distorted Remote Network Audio Skype Smart Core Bluetooth (BT)
2 3 4 5 6 7 8 9 10
No White
Power
LED &
does not
response
to remote
(Dead
Set)
Stationary
coloured
lines or
dots
No
video
One of
Inputs
No
video
all
Inputs
No
Remote
Wireless
can't
connect No Audio Skype
Can't Work
Smart
Core no
LED (Set
is still
alive)
Bluetooth /
One Step
Remote
(OSR) can't
connect
B* Board  
             
G* Board  
  
H* Board
  
Speaker
 
Wifi& BT
Module 
  
LD Board
  
LVDS FFC
   
Tcon
     
LCD Panel     

Problem Power
Power LD Panel
(Tcon)
Panel
(Backlight)
TEMP Soft- ware
Emitter
Audio
FAN
(N/A)
Local
I2C
Size B* Board G* Board H* Board
43” BMX Not applicable HSC3_S_M
50” BMX Not applicable HSC3_S_M
55” BMX Not applicable HSC3_S_M

11
3-1. NO POWER SECTION 3
TROUBLESHOOTING
Troubleshooting
3-1-1 No Power – LD Board
No Power
Check Fuse F1000
B* Board
OK
NG: DC Voltage is 0V
DC/DC converter check
NO POWER:MUFFIN
Check 19.5V_SS
JL1000 MOSFET Q1003
broken
NG: DC Voltage is 0V
Check connection
harness
CN4001
OK
OK
Symptoms
Symptoms
Check DIODE
D1001 DIODE D1001
broken
NG: Diode are shorted
FUSE F1000
broken
OK
Check Fuse
12V DDCON
F9104
OK
FUSE F9104
broken
NG: DC Voltage is 0V
Size B* Board G* Board H* Board
43” BMX Not applicable HSC3_S_M
50” BMX Not applicable HSC3_S_M
55” BMX Not applicable HSC3_S_M

12
Troubleshooting
Board Name Board PWB (A side) Detail
LDB1
(XMDT 43,
XMAT 43)
F1000
D1001
JL1000
CN4001
F9104
LDB2
(XMDT 50,
XMAT 50)
F1000
D1001
JL1000
CN4001
F9104
JL1000
F1000
CN4001
F1000
Details
CN4001
JL1000
D1001
Details
D1001
F9104
F9104

13
START
Check C9216 Voltage.
Is the voltage3.3V?
Check C9224 Voltage.
Is the voltage1.5V?
Check C9188 Voltage.
Is the voltage5V?
Check C9203 Voltage.
Is the voltage1V? END
DDCON/LDO working normal
no
yes
no
yes
no
yes
no
yes
Check C9207 is
it 1.05V?
yes
no
3-1-2 No POWER - DC/DC converter check
Check C9230 is
it 1.8V?
yes
no
Check 3.3V_MAIN
C9005 Voltage.
Is the voltage3.3V?
no
yes
3.3V DDCON check
(Change B* Board)
1.5V DDCON check
( Change B* Board)
5.0V DDCON check
(Change B* Board)
1.0V DDCON check
(Change B* Board)
1.05V LDO check
(Change B* Board)
1.8V DDCON check
(Change B* Board)
3.3V_MAINcheck
(Change B* Board)
Troubleshooting

14
BMX Board PWB (A side) Detail
3.3V
1.5V
5.0V
C9224
F9016
C9222
F9015
C9216
C9213
R9321
F9013
C9188
R9277 C9185

15
BMX Board PWB (A side) Detail
1.0V
1.05V
1.8V
F9014
C9207
C9203
F9012
C9230
F9017
C9263
C9169
#PIN4
C9206
#PIN4
C9229

16
BMX Board PWB (A side) Detail
3.3V_MAIN
C9005
#PIN1
Q9002

17
Troubleshooting
Muffinreplacement
Product SW write
Recover?
Muffin issue
Yes
No
Muffin
replacement flow
eMMC erase Data on eMMC
need to be erase
firstbefore
changing Muffin
Board Issue
3.1-3 NO POWER – Muffin Replacement (Main Device)

18
Troubleshooting
3-2-1. LED Blinking: 2x (Main power Error)
3-2. LED BLINKING
BMX board (XM-A, XM-AT and XM-DT) only AC Adapter
2-time blinking
Check +19.5V_SS
at pin 15/17 of CN9000,
or JL9011
on B* Board
Voltage > 23V
Voltage < 23V
B* Board
Replace
LD* Board
LD* Board
OK
AC Adapter
NG

Troubleshooting References
19
Troubleshooting
Board Name Board PWB (A side) Detail
BMX
(CN9000)
BMX
(JL9011)
JL9011
CN9000
3-2-1. LED Blinking: 2x (Main power Error)

20
Troubleshooting
3-2-2. LED Blinking: 3x (DC Alert & Communication Error)
Note: Board Details refer Section 3
main page.
3-time blinking
Check +5.0V_MAIN
at L9015, 4.959V
<Voltage<5.285V?
F9013, IC9021,
etc (B* Board)
DC_ALERT
NG
OK
Speaker
Check
Speaker Impedance
at SP Connector,
8Ω±1.2Ω?
Check Audio
+19.5V
at pin 16/18 of CN9000
on the B* Board
LD* Board
Check +19.5V
at Power Amp side
of F7751 on
the B* Board
F7751, IC7751
, etc (B* Board)
IC7751, etc
(B* Board)
AUDIO
NG
OK
NG
OK
NG
OK