KDL-32BX320, KDL-32BX321, KDL-32BX420, KDL-32BX421, KDL-40BX420, KDL-40BX421, KDL-46BX420, KDL-46BX421 - Sony TV Service Manual (repair manual). Page 4

Read Sony KDL-32BX320 / KDL-32BX321 / KDL-32BX420 / KDL-32BX421 / KDL-40BX420 / KDL-40BX421 / KDL-46BX420 / KDL-46BX421 Service Manual online

KDL-32BX320/32BX321/32BX420/32BX421/40BX420/40BX421/46BX420/46BX421 i
TABLE OF CONTENTS
Section 1 - Safety and Features.................................................1
Warnings and Cautions - English ...............................................1
Safety-Related Warnings ............................................................ 3
Warnings and Cautions - French ...............................................4
Safety Check-Out .......................................................................7
Self Diagnosis Function .............................................................9
Overview ..................................................................................10
Features ...................................................................................10
Scene Select ............................................................................. 10
USB Input ................................................................................. 10
LightSensor™ Technology ........................................................ 10
5 HD Inputs ............................................................................... 10
BRAVIA® Sync™ Compatible ...................................................11
KDL-32BX320/32BX321 Models Only .......................................11
All Except KDL-32BX320/32BX321 Models ..............................11
Specifications ...........................................................................12
Section 2 - Software Requirements.........................................14
Overview ..................................................................................14
Software Updates for customers ..............................................14
Software Updates for Servicers ...............................................15
Software Update Responsibility ................................................ 15
Checking the Software Version ................................................. 15
Examples of Software Correctable Symptoms ......................... 16
Section 3 - Chassis Overview ..................................................17
Overview ..................................................................................17
Overall Circuit Description .......................................................19
A Board ..................................................................................... 19
Power Supply ............................................................................ 19
Inverter ...................................................................................... 20
Switch Unit ................................................................................ 20
H Board ..................................................................................... 20
Section 4 - Troubleshooting .....................................................22
Overview ..................................................................................22
Updating the software ............................................................... 22
Video Failures ..........................................................................22
No Video ................................................................................... 22
Video Distortion ........................................................................ 23
Audio Troubleshooting .............................................................24
Power Supply Troubleshooting ................................................25
Completely Dead Set ................................................................ 25
TV Won’t Power On .................................................................. 25
Backlight Issues .......................................................................25
No Backlight, No Shutdown ...................................................... 25
Protection Shutdown ................................................................26
Standby LED Flash Count ........................................................ 26
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