Sony KDL-40SL140 - 40" Bravia Sl Series Lcd Tv Installation guide

MA2F Chassis
Models:
KDL-40SL140
KDL-46SL140
Triage and Troubleshooting Guide
Course: CTV-51
Training Manual
BRAVIA

CTV-51 i
Audio
System
Block Diagram
........................................
1
4
Section 4 - Troubleshooting
..............................................
1
5
Symptom & Solution
......................................................
1
5
TV will not Turn ON (Dead Set)
.........................................
1
5
TV Shuts Down and Indicates a Protection Mode
.............
1
5
2X Blink Pattern (Power Supply Failure)
.....................
1
5
3X Blink Pattern (D1.8V or D2.5V Failure)
..................
1
6
4X Blink Pattern
(D3.3V Failure)
..................................
1
6
5X Blink Pattern
(Panel V Failure)
...............................
1
6
6X Blink Pattern (Backlight Failure)
.............................
1
6
7X Blink Pattern (Temperature Failure)
.......................
1
7
8X Blink Pattern (Audio Failure)
..................................
1
7
Video Troubleshooting
.......................................................
1
7
No Video (All Inputs)
....................................................
1
8
Distorted Video (All Inputs)
..........................................
1
8
Unique
Main Video Board (BM5-Board) or LVDS Cable
Effects
....................................................................
1
9
Unique LCD Panel Assembly Effects (& TCON Board)
1
9
Common
Main Video Board (BM5
-Board) and
LCD Pa
nel
Assb.
Effects
..........................................................
1
9
Audio Troubleshooting
.......................................................
2
0
Missing or Distorted Main Speaker Audio - All Inputs
..
2
0
Missing or Distorted Main Speaker Audio - Individual
Inputs
.....................................................................
2
0
Section 1 - Input & Output Layout and Description
..........
3
Input
Descriptions
............................................................
4
RF Input
...............................................................................
4
Composite
Video & Audio
Inputs
1 & 2
................................
4
Component Video & Audio
Inputs
1
& 2
..............................
4
HDMI/DVI Video
Inputs 1
& 2
and DVI Audio
......................
4
PC Video & Audio Input
.......................................................
4
"Service Only" USB Connection
..........................................
4
Audio Outputs
..................................................................
4
Analog
Fixed Audio Output
..................................................
4
Digital
Audio Ou
tput (Optical)
..............................................
4
Section 2 - Chassis PCB Layout
........................................
5
PCB Functional Descriptions
...........................................
7
BM5
-Board
..........................................................................
7
IP5Z-Board
(Power Supply &
Inverter Board)
......................
7
Backlight Balancer Board
....................................................
7
HM1-Board
..........................................................................
7
HM5-Board
..........................................................................
7
LCD Panel
Assembly
...........................................................
8
Section 3 - Block Diagrams
................................................
9
Overall Chassis Block Diagram
.......................................
9
Power S
ystem
Block Diagram
.......................................
1
0
P
ro
tection Circuits
Block Diagram 1
...............................
1
1
P
ro
tection Circuits
Block Diagram
2
..............................
1
2
Video System
Block Diagram
........................................
1
3
Table of Contents

CTV-51 ii
Table of Contents
Figures
IP5Z-Board Test Points Fig. 4-1........................................21
Balancer Board Test Points Fig. 4-2................................22
LVDS Cable Video Test Points Fig. 4-3............................23
TCON Distortions Photographs Fig. 4-4..........................24
TCON Distortions Photographs Fig. 4-5..........................25
Loss of LVDS Video Distortion Fig. 4-6...........................26
BM5-Board Defective Distortions Fig. 4-7.......................27
Section 5 - Triage Charts & Troubleshooting Flowcharts
2
6
Section 6 - Service Mode & Self Check
...........................
3
6

CTV-51 3
Section 1 - Input & Output Layout and Description
Composite
Input
HDMI
Input
USB (Service Only)
Composite
Input
Component
Inputs
PC
Inputs
Audio
Output
Digital Audio
Output
(Optical)
HDMI & DVI
Inputs
RF Input

CTV-51 4
Input & Output Layout and Description
Input Descriptions
RF Input
Reference Figure 1-1
Composite Video & Audio Inputs 1 & 2
Yellow Jack - Composite Video Input
Red & White Jacks - Right & Left Audio Input
Component Video & Audio Inputs 1 & 2
Red, Green, & Blue Jacks - Component Video Inputs
Red & White Jacks - Right & Left Audio Input
HDMI/DVI Video Inputs 1 & 2 and DVI Audio
Both the HDMI and DVI formats contain digital video. In the case of the
HDMI format the audio is also digital and is part of the video and audio
data stream over the single HDMI connection. In contrast, the DVI format
contains only digital video in its data stream. The audio is sent over a
separate red and white wired analog audio connection. Furthermore, a
DVI to HDMI adapter is required to connect the DVI connector to the
HDMI connector.
PC Video & Audio Input
The MA2F chassis models (KDL-40SL140 and KDL-46SL140) have a
Personal Computer Input
(PC-IN)
, which connects directly to the PC 15
pin DIN connector (HD15 connector). Once connected the TV functions
as a video monitor and audio output (separate Stereo Mini Plug) for the
PC. There is a complete table of PC Input Signal Compatibility on Page
18 in the Owners Manual.
"Service Only" USB Connection
This USB connection is for Sony factory use only.
Audio Outputs
Analog Fixed Audio Output
This audio output can be used to listen to the TV audio through an external
stereo system. The audio level at the output is set to a fi xed level and
cannot be adjusted.
Digital Audio Output (Optical)
Connects to the Optical audio input of any digital audio equipment that is
PCM/Dolby digital compatible. The following table shows the audio inputs
and the audio format which are present at the Optical Audio Output.
Audio Input Source
Coaxial Output
Digital Tuner 5.1 (ATSC)
2CH PCM
DVD HDMI 5.1
2CH PCM
All Analog Audio Inputs
2CH PCM
Analog Tuner (NTSC)
2CH PCM
SACD (HDMI)
No Output
DVD Audio (HDMI)
No Output

CTV-51 5
Section 2 - Chassis PCB Layout
Balancer
Board IP5Z-Board
BM5-Board
TCON Board
HM1-Board
HM5-Board
KDL-40SL140
LVDS Cable

CTV-51 6
Chassis PCB Layout
Balancer
Board
IP5Z-Board
BM5-Board
TCON Board
KDL-46SL140
LVDS Cable
HM1-Board
H1-Board

CTV-51 7
Chassis PCB Layout
PCB Functional Descriptions
Reference Figures 2-1 & 2-2
BM5-Board
The circuits located on the BM-Board perform all Video and Audio
processing functions. It also contains all the microprocessor control
circuits. The following circuits are included on this board.
•
TV Microprocessor
•
ATSC/NTSC Tuner
•
Xillion Processor
- A/V Processing
- HDMI Processing
- Scan Converter
•
Composite Input Terminals
•
Component Input Terminals
•
HDMI Input Terminals
•
PC-IN Input Terminal
•
RF/Cable Input Terminal
•
Voltage Regulator Circuits
IP5Z-Board (Power Supply & Inverter Board)
The IP5Z-Board includes the typical TV power supply circuits listed in
the following bullets. In addition this board includes the Backlight Inverter
circuits.
•
Standby Power Supply
o
3.3V
•
Main Power Supply
o
AU15V
o
12V
•
Power Factor Control (PFC)
•
Inrush Relay
•
Main Fuse (F1)
The Backlight Inverter (or power supply) is located on the IP5Z-Board.
The Backlight Inverter section develops two 1.1KV high voltage outputs
(180 degrees out-of-phase) used to drive the Backlight Balancer Board
and subsequently the Backlight lamps.
Backlight Balancer Board
The Backlight Balancer board takes the 1.1KV (HV1 & HV2) from the
IP5Z-Board (Inverter section) and disperses the high voltage inputs
equally to each lamp ensuring even luminance across the entire LCD
panel. The majority of the components on the Balancer board are passive
transformers used for the HV balancing function. In addition, there
are circuits for the Inverter Feedback signal and LD (Lamp Detection)
protection signal development.
HM1-Board
•
Channel Up/Down Button
•
Volume Up/Down Button
•
TV/Video Button
•
Menu Button
•
Power Button
HM5-Board
•
Power LED
•
Timer/PIC OFF LED
•
IR Sensor
•
Illumination Sensor

CTV-51 8
Chassis PCB Layout
LCD Panel Assembly
The LCD Panel Assembly includes the LCD Panel, TCON, and Backlight
Lamps.
The LCD Panel contains the actual liquid crystals, color fi lters, and
polarizers. The liquid crystals are manipulated by the applied voltage to
pass a specifi c amount of light - from the backlight- depending on the level
of voltage applied. The panel resolution on all the MA2F chassis models is
1920 X 1080 lines
. These are considered 1080p High-Defi nition models.
The TCON performs all the control, timing, charge, and discharge functions
driving the operation of the LCD Panel.
The Backlight Lamps generate the white light that passes through the
liquid crystals in the LCD Panel.

CTV-51 9
Section 3 - Block Diagrams
Overall Chassis Block Diagram
LEDs
IR Sensor
Illumination
Sensor
HM5-Board
Standby 3.3V Power
Supply
Main Power Supply
Inverter HV Supply
Main Relay
IP5Z-Board
AC
Input
Balancer Board
Component 2
R
L
BM5 Board
TV Microprocessor
ATSC/NTSC Tuner
Xillion – A/V Processor
ATSC/NTSC Processing
HDMI
IP (Image Processor)
Scan Converter (Scalar)
Audio Processing
AV Switching
Temperature Sensor
Control Data
Power
LVDS Cable
Power
Keys
SIRCS
Power &
LED Control
TCON
LCD Panel Assemble
Composite & S-Video 1
LCD PANEL
PC-IN V
Digital
VAR/FIX Audio Output
PC-IN Audio Input
Component 1
A/V &
S-Switch
Power Switch
Function Keys
HM1-Board
Optical Audio Output
HDMI 1
DVI Audio Input
RF/Cable
HDMI 2
A/V
Analog
A/V
Digital
A/V
Digital
A/V
Analog
A
Analog
A
Analog
CCFT
Backlights
A
Analog
A
Digital
A/V – Audio & Video
A – Audio Only
V – Video Only
Video Only for
DVI connection
RF
Composite Video 2 A/V
Analog
Composite Video 3 A/V
Analog
HDMI 3
HDMI 4
A/V
Digital
A/V
Digital