Sony KDL-46XBR10 - BRAVIA XBR - 46" LCD TV Installation guide

EX2S/EX2WM Direct-View LCD Television Chassis
Circuit Description and Troubleshooting Guide
Training Manual
MODELS: KDL46XBR10
KDL52XBR10
Course : CTV-62
KDL52XBR10

CTV-62 i
Media Receiver .................................................................... 7
Wireless HD Module Replacement ................................ 10
Media Receiver .................................................................. 10
Wireless HD Module Pairing .............................................. 15
Troubleshooting ............................................................. 16
Remote Control RF Module ............................................... 16
Chapter 3 – Overall Circuit Description ........................... 19
Overview ........................................................................ 19
Overall Block Diagram ................................................... 19
Media Receiver .................................................................. 19
Monitor ............................................................................... 19
Circuit Board and Component Views ................................. 19
Chapter 4 – Media Receiver Circuit Description ............. 23
Overview ........................................................................ 23
Circuit descriptions ............................................................ 23
BUB Board ......................................................................... 23
Analog Sources ..................................................................... 23
Digital Sources ...................................................................... 23
Audio Output ......................................................................... 23
TV MICRO ............................................................................ 23
Power Supply ..................................................................... 25
Wireless Module ................................................................ 25
RF Remote ........................................................................ 25
H1B Board ......................................................................... 25
H3B Board ......................................................................... 25
H5B Board ......................................................................... 25
Chapter 1 – Introduction ..................................................... 1
Overview .......................................................................... 1
Features .......................................................................... 1
Full HD 1080 Panel .............................................................. 1
240HZ Motionflow™ ............................................................ 1
Super Slim Design ............................................................... 1
Edge LED Backlighting ..................................................... 2
Enhanced Cross Media Bar (XMB) ...................................... 2
Internet Connectivity ............................................................ 2
USB2.0 Input ....................................................................... 2
HDMI 1.3 .............................................................................. 2
Consumer Electronics Control (CEC) ..................................... 2
xvYCC ..................................................................................... 2
Deep Color .............................................................................. 2
Bravia® Sync ....................................................................... 3
Advanced Contrast Enhancer (ACE) ................................... 3
Digital Media Port ................................................................ 3
Digital Media Extender (DMEX) ........................................... 3
Interactive Program Guide (IPG) ......................................... 3
Digital Living Network Alliance (DLNA) ................................ 3
Chapter 2 – Wireless Features ............................................ 4
Overview .......................................................................... 4
Millimeter Wave RF ......................................................... 4
Wireless HD Module ........................................................ 5
Wireless “Pairing” ................................................................ 7
Remote Control RF Module Replacement ....................... 7
Table of Contents

CTV-62 ii
Table of Contents (continued)
Chapter 5 – Monitor Circuit Description .......................... 26
Overview ........................................................................ 26
Circuit descriptions ............................................................ 26
QTM Board ........................................................................ 26
BE Micro ............................................................................... 26
Video Data ............................................................................ 26
Audio Data ............................................................................ 26
Wireless Module ................................................................ 26
RF Remote Module ............................................................ 26
GD1 Board ......................................................................... 26
Reverse Panel Drive ...................................................... 28
Troubleshooting ............................................................. 29
Audio .................................................................................. 29
Video .................................................................................. 29
Chapter 6 – Power Supplies and Protection ................... 32
Overview ........................................................................ 32
Media Receiver Power ....................................................... 32
Protection ........................................................................... 32
Standby Power ...................................................................... 34
Primary Power ...................................................................... 34
LED Inverter .......................................................................... 34
Protection ........................................................................... 34
Troubleshooting ............................................................. 36
Backlight Troubleshooting .................................................. 39
With 6X Shutdown ................................................................ 39
With No Shutdown ................................................................ 39

CTV-62 1
Chapter 1 – Introduction
Overview
The EX2S/EX2WM chassis is the top of the line model for the 2009 Sony
Bravia® LCD televisions. It has several new breakthrough features which
cause it to stand out from the other television models of the year.
2 models of televisions fall into this chassis category. They are the
KDL46XBR10 and KDL52XBR10 which are designed as monitor display
devices. A separate media receiver with an integrated NTSC/ATSC tuner
is used to connect all external devices to the LCD monitor. Transmission
of the video and audio content is accomplished by using a wireless
transmitter on the media receiver to a wireless receiver on the monitor.
The media receiver and monitor communicate with each other via a bi-
directional wireless RF receiver/transmitter. The traditional backlighting
method utilizing fluorescent lamps has been replaced with an array of
LED’s along the bottom of the LCD panel assembly.
Features
Several new features are introduced in the EX2S/EX2WM chassis models
along with some carryovers from the previous year.
Full HD 1080 Panel
Both models have a 1920 X 1080 native resolution panel. All video signals
exit the video process circuits with resolution of 1080p 60HZ. The RGB
resolution is 10-bit to provide 1,024 levels of gray scale for improved
picture resolution.
240HZ Motionflow™
A frame-quadrupling circuit utilizing proprietary circuitry and algorithms is
able to capture and compare the movement from one frame to another. By
anticipating the location of a moving object, an additional frame is inserted
to increase the frame refresh rate from 60HZ to 240HZ. The result is an
exceptionally smooth picture during fast moving objects and scenes.
The customer has the option of changing the settings of the Motion
Enhancement and Motion Compensation circuits to smooth the “judder”
inherent with 24-frame film-based content or keep the judder for a film-like
experience.
Super Slim Design
The use of LED’s along the bottom edge of the LCD panel along with
new circuit board designs and mounting allows for the creation of an
exceptionally slim television. The depth of the panel varies from 15.8mm
(0.622”) at the top, 40.3mm (1.59”) at the rear cover and 57.3mm (2.26”)
at the bottom where the speakers are housed.

Chapter 1 - Introdcution
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Edge LED Backlighting
High-intensity LED’s strategically placed along the bottom edge of the
LCD panel along and a wave guide diffuser plate tht disperses the light to
allow for a dramatic reduction of the depth of the television.
Bravia Wireless HD
All video and audio content is transmitted from the media receiver to
the monitor via a 60GHZ millimeter wave radio frequency which allows
adequate bandwidth for full 1080p un-compressed video content. This
frequency allows for minimal interference from other wireless devices in
the area.
Enhanced Cross Media Bar (XMB)
A new graphics user interface with rich 3-D graphics allows the user to
customize the setup of the television and to access various adjustments
and control of optional devices. Optional external devices can also be
detected and displayed. One example is when a USB storage device is
plugged into the USB2.0 side input that contains JPEG format photos.
The detection of the device will appear in the XMB graphics icons along
with thumbnail views of the photos stored on the device. The photos can
be viewed individually or be displayed as a slide show.
Internet Connectivity
Once available as an optional device to connect to the television, this
feature is now an integral part of the product. The rear of the media receiver
contains an Ethernet port to connect to a high speed network. Access to
online music and video through partnered websites is possible.
Personalized “widgets” are small applications that can be placed on the
screen and accessed with the touch of a button to bring up programming
such as weather, stocks and sports information.
USB2.0 Input
This feature was available in selected 2008 models and allowed the
viewing of JPEG formatted pictures and playback of MP3 audio files. The
media content has been expanded this year to allow playback of MPEG2
format video content.
HDMI 1.3
This new version of HDMI introduces several new enhancements and
features and the EXS/EX2WM chassis supports 3 of the new features.
Consumer Electronics Control (CEC)
A standardized protocol for the control of consumer electronics devices
allows for communication and control via the HDMI cable on products that
have this feature. Any brand of electronic equipment that is CEC compliant
can communicate with another to generate operational commands. The
Bravia Sync feature uses the CEC format to control other Sony devices
in the system.
xvYCC
The previous color bandwidth limitations applied for compatibility with
analog signals are no longer present with digital signals. This allows for
1.8 times more colors.
Deep Color
The previous HDMI specifications limited the RGB sample level to 24-bit.
Deep Color expands this up to 48-bit giving the ability to generate a color
depth of 2.8 trillion levels.

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Bravia® Sync
By utilizing the CEC feature of HDMI 1.3, this feature allows the customer
to easily control the various Sony devices within their home entertainment
system provided that all of the other devices have this feature included.
Advanced Contrast Enhancer (ACE)
By monitoring the overall level of the video signal, the backlights are
dynamically controlled and reduced during low light level scenes to
enhance the contrast ratio.
Digital Media Port
This port allows for the hookup of optional devices that provide an interface
with digital media products such as MP3 players and video cameras.
Digital Media Extender (DMEX)
A USB 1.0 port is provided to supply a digital connection path to control
optional modules such as the BRAVIA DVD Link and BRAVIA Wireless
Link. Devices connected will automatically appear on the XMB menu.
Interactive Program Guide (IPG)
An interactive guide is included to provide continuously updated program
information at no charge to the customer. The guide (provided by TV
Guide) is part of the XMB graphics feature. Program material is updated
from the local PBS station when the television is off.
Digital Living Network Alliance (DLNA)
An industry standard networking protocol has been developed by leading
manufacturers to allow other devices such as a compatible computer
to communicate with the television via an Ethernet connection to your
home network. This gives the ability to view photos, audio and movie
content directly from your computer via the network. Future plans include
the ability to download software updates for the television via the home
network.

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Chapter 2 – Wireless Features
Overview
One of the several new features found in the EX2S/EX2WM chassis is the
use of wireless transmission for audio and video content. There is also RF
remote controlling between the media receiver and the display panel.
While wireless RF transmission systems have been around since the
invention of radio, the transmission of full 1920 X 1080p uncompressed
video along with 5.1 channel audio has presented a challenge. Many
homes have other wireless devices in operation such as cordless phones
and wireless networks. Broadcasting uncompressed video and audio
information without any interruptions is a challenge when operating near
these frequencies.
Millimeter Wave RF
Access to a license exempt 7GHZ band falling between 57 and 64GHZ
was released by the FCC back in 2001. This extremely high frequency
and range allows for several significant advantages over Ultra Wideband
and 802.11 compliant transmissions. Table 2-1 illustrates the advantage
of using this frequency band.
CHANNEL
BANDWIDTH
EFFECTIVE
TRANSMIT POWER
MAXIMUM
DATA
RATE
UWB 520MHZ 0.4mW 80Mbs
802.11 40MHZ 160mW 1,100Mbs
60GHZ 2,500MHZ 8000mW 25,000Mbs
TABLE 2-1
WIRELESS TRANSMISSION COMPARISONS
Note the significant increase in bits-per-second when using the 60GHZ
band. Higher transmit power is allowed because 60GHZ is absorbed at
a greater rate by the oxygen in the air. This provides several advantages
such as reduction of interference from other devices, increased security
from detection by other devices and a reduction in interference from other
60GHZ devices.
Another advantage of this frequency spectrum is the directional nature
of the RF energy. 2 to 5GHZ radio frequencies tend to be more omni-
directional which is suitable for wireless telephones and computer
networking devices. The wireless transmitter used in the KDL46/52XBR10
models uses a dynamically steerable narrow beam which can be directed
to the transmit and receive antennas of the devices. The term used for
the device that transmits is “source” while the receiving device is referred
to as “sink”.
Since 60GHZ does not penetrate solid objects very well it is important
to maintain a line of sight between the source and sink device with the
narrow beam. The steerable antenna allows for this and can manipulate
the beam to bounce off of walls, ceilings and floors as needed. An example
of this feature is illustrated in Figure 2-1.

Chapter 2 - Wireless Features
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FIGURE 2-1
WIRELESS STEERING
ELECTRONICALLY
STEERABLE ANTENNA RF TRANSMITTER LVDS RECEIVER
ANTENNA RF RX/TX LVDS RX/TX
FIGURE 2-2
WIRELESS MODULE
Wireless HD Module
Figure 2-2 illustrates the wireless module used for the source (transmit)
side in the medial receiver unit. Audio and video information is received
via a LVDS connection to the processing circuits. The RF processor and
transmitter modulates the LVDS information to the RF carrier. The small
copper colored perforated plate is the steerable antenna system.
Wireless Circuit Description
In Figure 2-3 a block diagram of the wireless systems used in this chassis
is shown. The media receiver functions as the source device and the
monitor as the sink device. The LVDS transmitter located on the BUB
board sends the necessary information to the wireless transmit module.
NOTE: Even though the only connection between the BUB board and
wireless module is a LVDS cable, some of the cable lines are used for
B+, ground, audio I2S information, and I2C communications. Most of the
LVDS lines carry the RGB video information.
The wireless sink module receives the information from the media receiver
and sends the information to the QTM board on the monitor as an LVDS
signal. Data, control and audio information is separated from the video
information and processed accordingly.

Chapter 2 - Wireless Features
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LVDS RX
TRANSMITTER
LVDS TX
RECEIVER
LVDS RX
MEDIA RECEIVER MONITOR
BUB QTM
LVDS COMPONENTS
PANEL 12V
GROUND
I²C DATA
TX0~4 EVEN
TX0-4 ODD
TX EVEN CLOCK
TX ODD CLOCK
I²S DATA AND CLOCK
SPDIF (NOT USED)
WIRELESS MODULE
(SOURCE)
WIRELESS MODULE
(SINK)
LVDS TX
RF REMOTE
MODULE
RF REMOTE
MODULE
SUB
MICRO
BE
MICRO
FIGURE 2-3
WIRELESS CIRCUITS BLOCK DIAGRAM

Chapter 2 - Wireless Features
CTV-62 7
RF MODULE
SECURED BY 1
SCREW AND CLIP
LIFT 2 RETAINING CLIPS ON
BOTTOM TO RELEASE FRONT
PANEL AND POSITION AS SHOWN
FIGURE 2-4
MEDIA RECEIVER RF MODULE REMOVAL
Remote Control RF
The sub micro located on the BUB board of the media receiver sends
commands to the RF remote module via a UART bus. The same holds
true for the BE micro located on the QTM board on the monitor. Both
microprocessor and RF remote modules can send or receive data.
Wireless “Pairing”
In order to keep other devices using the same or similar wireless
frequencies from interfering with each other, both the wireless and RF
remote modules are paired together. The wireless modules are paired by
recognizing each other’s MAC address while the RF remote modules are
paired by handshaking an encryption code. If one or both of the wireless
or RF remote modules are changed, they must be paired once again.
This procedure is performed in the service menu and will be described in
further detail later in this chapter.
Remote Control RF Module Replacement
This section explains the removal procedure for the Wireless RF Module.
It is relatively simple for the media receiver and more time consuming for
the monitor.
Media Receiver
Remove the top cover and front panel as illustrated in the service manual.
Position the front panel as illustrated in Figure 2-4. The RF remote module
is secured by 1 screw and retaining clip. Once the replacement module is
installed, perform the pairing procedure explained on Page 9.

Chapter 2 - Wireless Features
CTV-62 8
UNPLUG LED
POWER AND
SPEAKER
CONNECTOR
REMOVE
CABLES FROM
RETAINERS
REMOVE 2
SPEAKER
SCREWS
LIFT SPEAKER
GRILL BY
GRABBING AT
BOTH ENDS
NOTE THE
RUBBER
SPEAKER
GROMMET
FIGURE 2-5
MONITOR RF MODULE REMOVAL (STEP 1)
FIGURE 2-6
MONITOR RF MODULE REMOVAL (STEP 2)
REMOVE 2
SMALL MACHINE
SCREWS
REMOVE 1
LARGE MACHINE
SCREW
REMOVE 3
LARGE HEAD
SELF-TAP
SCREWS
FLIP BRACKET OVER
AND REMOVE 1 SCREW
SECURING REMOTE RF
MODULE
Monitor
Remove the stand (if installed) and the rear cover of the monitor as
instructed in the service manual. The monitor must be laying face-down
on a flat cushioned surface. Loosen the wire harness and remove the left
speaker assembly and grill as illustrated in Figure 2-5.
Following the illustration in Figure 2-6, remove the indicated screws
securing the bracket. Flip the bracket over to expose the RF module.

Chapter 2 - Wireless Features
CTV-62 9
PRESS “3” KEY TO
CHANGE DATA TO
“1”
PRESS “5” KEY
TO ENTER
GROUP 28,
ITEM 1
“EXECUTING” WILL
APPEAR
PRESS RF
SERVICE BUTTON
FOR AT LEAST 2
SECONDS
DONE!
FIGURE 2-7
RF REMOTE MODULE PAIRING

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CTV-62 10
REMOVE 1 SCREW IN REAR AND 3 IN FRONT
RELEASE
LVDS CABLE
FROM TAPE
FIGURE 2-8
MEDIA RECEIVER WIRELESS MODULE REMOVAL (STEP 1)
Remote Control RF Module Pairing
If one or both of the RF remote modules is replaced, they must be “paired”.
A unique encryption must be applied to prevent communication with
another television if it exists in the area. The top cover and plate must be
removed from the media receiver to gain access to the circuit boards.
Referring to Figure 2-7, place the television into service mode by pressing
“DISPLAY’, “5”, “VOL+” and “POWER”, in sequence, on the remote
commander while the monitor and media receiver are off. Be certain that
“MONITOR SERVICE” is displayed. If another page is present, press the
“JUMP” key to display the appropriate page. Press the “5” key to scroll to
group 28 “W_INFO”.
Change the data from “0” to “1” with the “3” key on the remote. The word
“Executing” will appear. Press the RF service button on the lower right
side of the BUB board for about 2 seconds. If successful, “completion” will
appear on the screen.
Wireless HD Module Replacement
The Wireless HD Module unit in the media receiver (source) or in the
monitor (sink) can be replaced individually. If either is replaced, they must
be “paired” once again. The MAC address of the source module must be
recognized by the monitor.
Media Receiver
Replacement of the wireless module in the media receiver requires the
removal of the top cover and front panel. The wireless module is secured
with 1 screw in the rear and 3 in the front as illustrated in Figure 2-8. Lift
the cloth tape to release the LVDS cable.
Referring to Figure 2-9, use a small flat-blade screwdriver or similar tool
to peel the heat transfer pad from the heat sink. The objective is to keep
the entire pad intact on the rear of the module. The front shield is easily
removed. Take note of the heat transfer pad. Unplug the LVDS connector
and transfer the heat transfer pad to the replacement module.

Chapter 2 - Wireless Features
CTV-62 11
USE FLAT TOOL TO
KEEP HEAT TRANSFER
PAD ATTACHED TO
WIRELESS MODULE
REMOVE
FRONT SHIELD.
NOTE HEAT
TRANSFER PAD
HEAT TRANSFER
PAD MUST BE
PLACED ON
REPLACEMENT
MODULE
UNPLUG LVDS
CABLE
FIGURE 2-9
MEDIA RECEIVER WIRELESS MODULE REMOVAL (STEP 2)

Chapter 2 - Wireless Features
CTV-62 12
REMOVE SINGLE
MACHINE SCREW
SECURING STAND
PLATE COVER
REMOVE AC INLET
AS SHOWN BELOW
AND LIFT STAND
PLATE COVER OFF
RELEASE CLAWS
ON BOTH SIDES
FIGURE 2-10
MONITOR WIRELESS MODULE REMOVAL (STEP 1)
Monitor
If the stand is attached to the monitor, it must be removed. Lay the monitor
on a flat surface with sufficient padding. Remove the rear cover. Remove
the left speaker, grill and bracket as described earlier in this chapter for
removal of the RF module. Remove the 2 screws from the right speaker
but do not remove it.
Referring to Figure 2-10, remove the AC inlet from the stand cover plate
by carefully prying the claws on both sides of the socket. Remove the
single machine screw and lift the cover plate off.

Chapter 2 - Wireless Features
CTV-62 13
REMOVE LCD POWER
CABLE FROM
RETAINERS
UNPLUG LED POWER
CONNECTORS
FIGURE 2-11
MONITOR WIRELESS MODULE REMOVAL (STEP 2)
REMOVE 2 LARGE
MACHINE SCREWS
REMOVE SMALL AND
LARGE MACHINE
SCREWS AND
REMOVE HEAT SINK
PLATE
RELEASE
CABLE FROM
TAPE
FIGURE 2-12
MONITOR WIRELESS MODULE REMOVAL (STEP 3)
Referring to Figure 2-11, unplug the power connectors for the LED
backlights and remove the cable from the retainers. It is not necessary to
remove the LVDS cable from its retainers.
Remove the indicated machine screws shown in Figure 2-12. Release the
cable from the tape and remove the heat sink plate.

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REMOVE 3 MACHINE
SCREWS SECURING
WIRELESS MODULE
CHECK THAT
INDICATED
CONDUCTIVE
PADS ARE STILL
INTACT
FIGURE 2-13
MONITOR WIRELESS MODULE REMOVAL (STEP 4)
The stand plate can now be flipped over to expose the wireless module
as illustrated in Figure 2-13. The module is secured by 3 screws. Note the
location of the conductive pads on the stand plate in the illustration and
be certain they are still intact.

Chapter 2 - Wireless Features
CTV-62 15
PRESS “1”
KEY TO
ENTER ITEM
4
PRESS “5”
KEY TO
ENTER
GROUP 25
PRESS “3” KEY TO CHANGE DATA TO “1”.
“EXECUTING” WILL APPEAR
PRESS “4”
KEY TO
RETURN TO
ITEM 1
CONFIRM THE LAST 6 DIGITS OF
THE MAC ADDRESS DO NO
DISPLAY 7F FF FF
DONE!
VERIFY
FIGURE 2-14
WIRELESS MODULE PAIRING
Wireless HD Module Pairing
If one or both of the wireless modules is replaced, they must be paired once
again. Enter service mode as described in the RF remote pairing earlier
in this chapter. Be certain the “MONITOR SERVICE” page is displayed. If
it is not, use the “JUMP” key on the remote to display the proper page as
illustrated in Figure 2-14.
Press the “5” key on the remote to navigate to group 25 “BRORA INFO”.
Press the “1” key to navigate to line item 4, “PAIRING”. Change the data
from “0” to “1” with the “3” key on the remote. The word “Executing”
will appear on the screen for a few seconds followed by “Completion”
indicating a successful pairing. Verify the pairing by pressing the “4” key
to back up to line item 1 “SRC MAC ADD”. The last 6 digits of the MAC
address should not read “7F:FF:FF:FF”. If it does, attempt the pairing
procedure again or replace the defective module.

Chapter 2 - Wireless Features
CTV-62 16
Troubleshooting
If an RF or Wireless HD communication problem occurs between the media
receiver and monitor it will become necessary to isolate the cause by
determining in which component it is originating. The media receiver and
monitor contain monitoring devices which will activate the self-diagnostics
feature in most cases. In situations where the self-diagnostics feature is
not activated, a few simple procedures can be utilized to troubleshoot the
source of the malfunction.
Remote Control RF Module
Remote input commands from the user are performed via the remote
commander. Various commands are sent to the monitor via infra-red. If
a particular command is input that is specific to the media receiver, the
Wireless RF modules located inside the monitor and media receiver are
responsible for communications between the 2 devices.
If the Wireless Remote Module in the media receiver fails to communicate
with BUB board, the media receiver will shut down (along with the monitor)
and cause the POWER/STBY LED on the media receiver to blink in groups
of 17. The monitor does not have this feature. If the Wireless R Module on
the monitor fails, there will be a complete loss of communications and the
media receiver will not turn on.
In a situation where the monitor and media receiver fail to communicate
and the media receiver fails to turn on even thought the monitor does,
a malfunction of the IR remote and process circuits or the Wireless RF
Module on the monitor is suspected.
A simple command can be performed to determine if the Wireless RF
modules are communicating. With AC power applied to both the media
receiver and monitor, press the power on button on the front of the media
receiver. If the Wireless RF link is OK, the monitor will power on too. If
it does not, suspect a defective Wireless RF module on the monitor. If it
does, the problem lies within the IR remote circuits which can include a
defective remote commander, IR receiver, or QTM board on the monitor.
The troubleshooting flowchart in Figure 2-15 will assist in isolating the
cause of a remote control failure.
Wireless
Remote Not
Working
No
Yes
BUB board in media
receiver
Yes
Does monitor
power on?
No
Remote commander
HB board
QTM board
Yes
Remote RF module
in monitor
APPLY AC POWER
TO MEDIA RECEIVER
AND MONITOR.
PRESS POWER
BUTTON ON FRONT
OF MEDIA RECEVER.
Can unit be turned
on with remote ?
FIGURE 2-15
REMOTE RF TROUBLSHOOTING FLOWCHART

Chapter 2 - Wireless Features
CTV-62 17
Wireless HD Modules
The Wireless HD Modules located inside the media receiver and LCD
display is monitored for communications. If the Wireless HD Module fails
in the media receiver it will shut down (along with the monitor) and the
POWER/STBY LED will blink in groups of 16. Should the Wireless HD
module fail in the monitor, the same event will occur with the monitor
blinking its POWER/STBY led in groups of 16.
There may be situations in which a wireless link is not achieved between
the units. This may be caused by and obstruction of the beam, distances
between the units that exceed 30 feet, or a failure of either module that
does not generate a protection shutdown and diagnostics error.
The media receiver contains a green LED on the front left side of the bezel
labeled “LINK”. It will light a steady green if a link is established between
the 2 wireless modules. This is illustrated in Figure 2-16. The strength
of the signal received by the monitor can also be observed within the
customer menu via the XMB graphics. By scrolling all the way to the left
and then to the top, select “Contact Sony”. Open the “Signal Diagnostics”
icon and the strength of the wireless link can be observed as shown in
Figure 2-17. “Medium” or “high” should be displayed for reliable results.
Another tool to use is to remove AC power from the media receiver followed
by powering up the monitor. Once the Bravia logo completes its display
a series of dots should appear on the screen as shown in Figure 2-18.
Each dot will increase in size and brighten across the group indicating
the monitor is attempting to establish a link with the media receiver. This
indicates the circuits on the QTM board in the monitor are communicating
with the Wireless HD Module.
Apply AC power to the media receiver. Allow up to 20 seconds to see if the
media receiver turns on and the link LED lights up. If the link LED lights,
the BUB board on the media receiver must be replaced. If the media
receiver does not power up the BUB board is still suspect. The Wireless
HD Module on the monitor or receiver could still be the cause but they
would be the last suspect since they usually cause the units to shut down
with the 16-blink diagnostics code. The troubleshooting flowchart in Figure
2-19 should provide assistance in isolating the failure.
WIRELESS LINK
INDICATOR
FIGURE 2-16
WIRELESS LINK LED
FIGURE 2-17
WIRELESS LINK LEVEL