KDL-42W850A, KDL-47W850A, KDL-55W850A - Sony TV Service Manual (repair manual). Page 4

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RB1G
CHASSIS
W850A
TABLE OF CONTENTS
Section Title 
Page
1. SAFETY NOTES 
1-1.
Warnings and Caution……………………………………………………….
5
1 2
Caution Handling of LCD Panel
5
Section Title 
Page
4. SERVICE ADJUSTMENTS 
4-1. Accessing 
Service 
Mode 
..................................................................... 214
4-2. 
Transition of Each Micro’s Service Mode……….……………………… 214
1-2.
Caution Handling of LCD Panel  ......……………....................................
5
1-3.  
Safety Check Out ........................…………….........................................
6
1-4. Leakage 
Test 
..........................................................................................
6
1-5. 
How to Find a Good Earth Ground…………………………………………
7
1-6. Lead 
Free 
Information….……………………………………………………
7
1 7
H
dli
th Fl
ibl Fl t C bl (FFC)
7
4-3. 
Change Data by Service Mode 1…………………………………..……. 214
4-4.
Change Data by Service Mode 2………………………………………... 215
4-5.
Restore WB / Gamma Adj. Data to B Board.………………………….. 216
4-6. 
WB Adjustment by Service Mode……………………………………….. 217
4-7. 
VCOM Adjustment (NFR-AUO Panel) …………………………………. 217
4 8
VCOM Adjustment (HFR SDC Panel)
218
1-7.  
Handling the Flexible Flat Cable (FFC)…………………………………….
7
1-8.
Instruction about Disassembling Smart Core……………………………...
8
2. SELF DIAGNOSTIC FUNCTION 
2-1. 
Overview of Control Buttons ...................................................................  12
4-8.
VCOM Adjustment (HFR-SDC Panel) …………………………………. 218
4-9.
REC Setting………………………………………................................... 218
4-10.
Reset Panel Operation Time………………………………………......... 219
4-11.
Set to Shipping Condition……………………………………….............. 219
4-12.
Summary of Service Control……………………………………….......... 219
4-13.
Service Menu Tree………………………………………........................ 220
2-2. 
LED Display Control ……….....................................................................
12
2-3. LED 
Pattern………………........................................................................ 
12
2-4. 
Standby LED Error Display………………………………………………….
13
2-5. Triage 
Chart 
............................................................................................ 
14
4-14.
How to Enter Self  Diagnosis Display…………………………………… 221
5. DIAGRAMS 
5-1. Circuit 
Board 
Location 
......................................................................... 
223
5-2. Block 
Diagram...................................................................................... 224
5 3
C
t
Di
225
3. TROUBLE SHOOTING 
3-1.
No Power…….………………………………………………………………..
15
3-2. LED 
Blinking……………….………………………………………...............
31
3-3.
No Sound…………………………….........................................................
60
3-4.  
RB1 Analog Signal Path…………………………………………................. 114
5-3. 
Connector Diagram ………………………………………...................... 225
3-5.
No Picture................................................................................................. 115
3-6.
Input Skip function……...……………………………………………………. 201
3-7.
Side Buttons Malfunction……………………………………………………. 202
3-8.
IR Remote Commander Malfunction………………………………………
203
3-9.
Light Sensor Error………………………………………………………….
204
3-10.
Network Malfunction: Ethernet (Wired)……………………………………. 205
3-11.
Wireless Network Malfunction…………………………………………….
209
3-12.
Bluetooth Malfunction……………………………………………………….. 211
3-13.
3D-Glasses (Active) malfunction…………………………………………..
212
3-14
HDD-Rec Malfunction
213
Please refer Service Manual – Unique for below information :
-Safety Warnings
-Wire Dressing
Circuit Board Location
3 14.
HDD Rec Malfunction…………..………………………………………….
213
3-15.
Android Application Malfunction……………………………………………. 213
4
-Circuit Board Location
-Disassembly and Exploded View.
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