KDL-32HX750, KDL-32HX753, KDL-32HX75A, KDL-40HX750, KDL-40HX753, KDL-40HX75A, KDL-46HX750, KDL-46HX753, KDL-46HX75A, KDL-55HX750, KDL-55HX753 - Sony TV Service Manual (repair manual). Page 4

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TABLE OF CONTENTS
Section Title 
Page
WARNINGS AND CAUTIONS
Warnings and Cautions (English)…………..………............……………..................
5
Warnings and Cautions (French) ......................................……………..................
6
Use Caution When Handling the LCD Panel .........................................................
7
S f t Ch
k O t
8
Section Title 
Page
SEC 4.  DIAGRAMS 
4-1. Block 
Diagram
4-1-1.  KDL-40, 46, 55 HX750, 55HX753 
(Except Taiwan/ Hong Kong) 
100
4-2-2. KDL-40, 46, 55 HX750, 40, 46 HX75A (Taiwan) 101
Safety Check-Out……………………………………...……….………………………… 8
Leakage Test………………………….....................................................................
9
How to Find a Good Earth Ground……………………………………………………… 9
SELF DIAGNOSIS FUNCTION 
Diagnostic Test Indicators ...............................................................................…… 10
Display of Standby LED Flash Count..................................................................... 10
Self Diagnostic Screen Display
10
,
,
,
,
(
)
4-2-3.  KDL-40, 46, 55 HX750, 40, 46 HX75A (Hong Kong) 102
4-2. Connector 
Diagram
4-2-1. 
KDL-40, 46 HX750,HX753,HX75A
103
4-2-5. 
KDL-55 HX750, HX753 
104
4-3.
Circuit  Board Location …………………………………………………… 105
S C
O
S
Self-Diagnostic Screen Display………………......................................................... 10
Exiting the Self-Diagnostic Screen……………..……………………………………… 11
SEC 1.  DISASSEMBLY
1-1.  
KDL-40 HX750/HX753/HX75A…………………………………………… 12
1-2.  
KDL-46 HX750/HX753/HX75A…………………………………………… 32
1-3. KDL-55HX750/753………………………………………………………… 52
SEC 5. EXPLODED VIEWS
5-1. 
KDL-40HX750/HX753/HX75A………………………………………………106
5-2. KDL-46HX750/HX753/HX75A………………………………………………114
5-3. KDL-55HX750/HX753……………………………………………………… 122
APPENDIX-1…..………………………………………………………………………… 158
SEC 2. SERVICE ADJUSTMENTS 
How to Entering Service Mode .............................................................................. 72
Change Data…..…………………..…………….......................................................
74
Save Changing Data……………….……...…………..………………………………… 75
White Balance Adjustment………………......….……………………………………… 76
VCOM Adjustment…………………..…………...……………...……………………… 77
Set To Shipping Condition ….…………………..…...………………………………… 78
OPERATING INSTRUCTIONS 
pp g
SEC 3. TROUBLE SHOOTING 
3-1.
Triage Chart………………………………………………………………… 79
3-2.
Flow Chart ……................................................................................... 80
3-3.
No Power…………………………………………………………………… 81
3-4.
Standby LED Blink…………………………………………………………
82
3-5.
Power (Green) LED Blinking………………………………………..........
88
3-6.
No Picture...………………………………………………………………… 89
3-7.
No Sound.........................................................................................… 90
3-8.
TV Commander Buttons Malfunction .................................................. 91
3-9.
Network Malfunction............................................................................
93
3-10.  
3D Malfunction…................................................................................. 95
3-11.  
Skype Malfunction…............................................................................ 96
3 12
Troubleshooting Reference
4
3-12.
Troubleshooting Reference 
     3-12-1. BAPS  Board ………………………………………………………………… 98
KDL-32/40/46/55HX750,753,75A

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