Sony BRAVIA KLV-28R412B User manual

Version Date Subject
1 01/2014 1st Issue.
2 05/2014 i) Add Software Update Procedure ( pg 76 )
ii) Correction on board name ( pg 8 , 9 , T/shooting section pg 10 ~ 51 )
LCD TV
9-888-148-02
For SM - Unique , please refer :
9-888-148-Ax ( America )
9-888-148-Cx ( China)
9-888-148-Ex ( Europe )
9-888-148-Px ( Pan Asia )
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
ITC3CHASSIS
Segment: ME
SERVICE MANUAL (COMMON)

LCD TV
SERVICE MANUAL (COMMON)
ITC3CHASSIS
Segment: ME

3
MODEL LIST
THIS SERVICE MANUAL CONTAINS COMMON INFORMATIONFOR BELOW REGIONSAND MODELS:
REGION
ASIA CHINA AMERICA EUROPE
MODEL
KLV-28R412B KLV-32R412B KDL-32R430B KLV-40R472B KDL-40RM10B KLV-48R472B
KLV-32R422B KDL-32R433B KLV-40R482B KDL-48R470B
KLV-32R426B KDL-32R435B KDL-40R450B KDL-48R473B
KLV-32R482B KDL-32RM5B KDL-40R453B KDL-48R475B
KDL-32R410B KDL-40R455B KDL-48R480B
KDL-32R413B KDL-40R470B KDL-48R485B
KDL-32R415B KDL-40R473B
KDL-32R420B KDL-40R475B
KDL-32R423B KDL-40R477B
KDL-32R424B KDL-40R478B
KDL-32R425B KDL-40R480B
KDL-32R427B KDL-40R483B
KDL-32R428B KDL-40R485B

SectionTitle Page
1. SAFETY NOTES
1-1. Warningsand Caution……………………………………………………….
5
1-2. Caution Handling of LCD Panel
......……………....................................
5
1-3.
CautionAbout the Lithium Battery…………….........................................
6
1-4. SafetyCheck 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. Handling the FlexibleFlat Cable (FFC)…………………………………….
7
2. SELF DIAGNOSTICFUNCTION
2-1.
Overviewof Control Buttons ...................................................................
8
2-2. LED Display Control
……….....................................................................
8
2-3. LED Pattern………………........................................................................
8
2-4. Standby LED Error Display………………………………………………….
8
2-5. Triage Chart ............................................................................................
9
3. TROUBLE SHOOTING
3-1. General.....................................................................................................
10
3-2. No Power…….………………………………………………………………..
10
3-3. Standby LED Blinking....…………............................................................
13
3-4. No Picture.................................................................................................
21
3-5. Audio.............................………………………………………….................
23
3-6. Video Problem..........................................................................................
31
3-7.
HDMI……………..……...…………………………………………………….
38
3-8. MHL…………………………………………………………………………. 39
3-9. Tuner…………………………………..………………………………………
42
3-10. Ethernet………………………………………………………………………. 59
3-11.
IR……………………………………………………………………………….
50
3-12. Switch Unit Buttons…………….…………………………………………….
51
3-13. Wifi……………………
………………………………………………………..
52
4
TABLE OF CONTENTS
Please refer Service Manual – Unique for below information:
-SafetyWarnings
-WireDressing
-Circuit Board Location
-Disassembly and Exploded View.
SectionTitle Page
4. SERVICE ADJUSTMENTS
4-1. Accessing ServiceMode
.....................................................................
55
4-2.
Accessing Software Version....................……….………………………
55
4-3. Accessing Self Diagnostic History………………………………..…….. 56
4-4. Accessing Self Diagnostic Menu………………………………………...
56
4-5. Accessing Serial Number Edit……………….…………………………..
57
4-6.
Accessing Model Name Edit................................................................
58
5. DIAGRAMS
5-1. Circuit Board Location
.........................................................................
60
5-2. Block Diagram......................................................................................
62
5-3. Connector Diagram ………………………………………...................... 70

ITC3 CHASSIS
R410/412/413/420/422/423/424/425/426/427/428/430/433/435/
450/453/455/470/472/473/475/477/478/480/483/485/M5/M10B
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 panelor frame edge to avoid the risk of electric shock.
2) Do not scratch or press on the panel with anysharp objects.
3) Do not leave the module in high temperatureor in areas of high humidity for
an extendedperiod of time.
4) Do not expose the 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 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 connectorsof the inverter circuit.
Damaging the wires may cause a short circuit.
9) Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
10) During the repair, DO NOT leave the Power On or Burn-in period for more
than 1 hourwhile the TV is face down on a cloth.
1-1. Warnings and Caution
1) These servicing instructions are 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, becauseof live chassis. The chassis of this receiver is
directly connectedto the ac power line.
4) Be sure to follow these guidelines to protectyour property and
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 forsafe operation.Replace these
componentswith Sony parts whose part numbers appearas shown in this
manualor in supplementspublished by Sony. Circuit adjustmentsthat are
critical forsafe operation are identifiedin this manual. Follow these
procedureswhenevercritical componentsare replaced or improper
operation is suspected.
!
Figure 1. TV is faced down on a cloth during repair.