Sony KDL-40W900A User manual

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
SERVICE MANUAL (COMMON)
SERVICE MANUAL (COMMON)
RB1GCHASSIS
Segment: HG
Version Date Subject
1 4/2013 1st Issue.
LCD TV
9-888-137-01
For SM - Unique , please refer :
9
-
888
-
137
-
P1 ( Pan Asia )
9
888
137
P1
(
Pan
Asia
)
9-888-137-C1 ( China )
9-888-137-A1 ( America )
9-888-137-J1 ( Japan)
9-888-137-E1 ( Europe)

SERVICE MANUAL (COMMON)
SERVICE MANUAL (COMMON)
RB1GCHASSIS
Segment: HG
LCD TV
LCD
TV

MODEL LIST
THIS SERVICE MANUAL CONTAINS COMMON INFORMATION FOR BELOW REGIONS AND MODELS:
REGIO
N
ASIA CHINA AMERICA JAPAN EUROPE
MODEL
KDL
40
W
9
00A
KDL
46
W900A
KDL
5
5
W
9
00A
KDL
-
40
W
9
00A
KDL
-
46
W900A
KDL
-
5
5
W
9
00A
KDL-40W904A KDL-46W904A KDL-55W904A
KDL
-
40
W
9
0
5
A
KDL
-
46W
9
05A
KDL
-
5
5
W
9
05A
KDL
40
W
9
0
5
A
KDL
46W
9
05A
KDL
5
5
W
9
05A
3

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.
A
ccessing Service Mode ..................................................................... 218
4-2. Transition of Each Micro’s Service Mode……….……………………… 218
4
-
3.
Change Data by Service Mode 1…………………………………..…….
218
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. Handling the Flexible Flat Cable (FFC)……………………………………. 7
4
3.
Change
Data
by
Service
Mode
1…………………………………..…….
218
4-4. Save Changing Data by Service Mode 1……………………………… 218
4-5. Change Data by Service Mode 2……………………………………….. 219
4-6. Save Changing Data by Service Mode 2……………………………… 220
4-7. Restore WB/Gamma Adj. Data to B Board…………………………….. 221
4-8. WB Adjustment by Service Mode……………………………………….. 221
4
-
9.
VCOM Adjustment (NFR
-
AUO Panel) ………………………………….
222
1-8. Procedure to remove Rear Cover…………………………........................ 8
1-9. Procedure to re-assemble Rear Cover……………………………………. 10
1-10. Caution Of Rear Cover …………………………………………………….. 11
1-11. Instruction about Disassembling Smart Core……………………………. 12
2 SELF DIAGNOSTIC FUNCTION
4
9.
VCOM
Adjustment
(NFR
AUO
Panel)
………………………………….
222
4-10. VCOM Adjustment (HFR-SDC Panel) …………………………………. 223
4-11. REC Setting………………………………………................................... 223
4-12. Reset Panel Operation Time………………………………………......... 224
4-13. Set to Shipping Condition……………………………………….............. 224
4-14. Summary of Service Control……………………………………….......... 224
4
-
15.
Service Menu Tree………………………………………........................
225
2
.
SELF
DIAGNOSTIC
FUNCTION
2-1. Overview of Control Buttons ................................................................... 16
2-2. LED Display Control ………..................................................................... 17
2-3. LED Pattern………………........................................................................ 17
2-4. Standby LED Error Display…………………………………………………. 17
4
15.
Service
Menu
Tree………………………………………........................
225
4-16. How to Enter Self Diagnosis Display…………………………………… 226
4-17. Updating the software……………………………………………………. 228
4-18. Non network function…………………………………………………….. 228
4-17. One Step Touch Key function……………………………………………. 230
5 DIAGRAMS
2-5. Triage Chart ............................................................................................ 18
3. TROUBLE SHOOTING
3-1. No Power…….……………………………………………………………….. 19
3-2. LED Blinking……………….………………………………………............... 35
3
-
3
No Sound
64
5
.
DIAGRAMS
5-1. Circuit Board Location ......................................................................... 231
5-2. Block Diagram...................................................................................... 232
5-3. Connector Diagram ………………………………………...................... 240
3
-
3
.
No
Sound
…………………………….........................................................
64
3-4. Analog Signal Path.................................................................................. 118
3-5. No Picture................................................................................................. 119
3-6. Input Skip Function……………………………………………………. 205
3-7. Side Buttons Malfunction……………………………………………………. 206
3-8. IR Remote Commande
r
Malfunction………………………………………. 207
Please refer Service Manual – Unique for below information :
-Safety Warnings
-Wire Dressing
Circuit Board Location
3-9. Light Sensor Error…………………………………………………………… 208
3-10. Network Malfunction: Ethernet (Wired)……………………………………. 209
3-11. Wireless Network Malfunction……………………………………………. 213
3-12. Bluetooth Malfunction…………………………………………………. 215
3-13. 3D Glasses
(
Active
)
Malfunction…………………………………………… 216
4
-
Circuit
Board
Location
-Disassembly and Exploded View.
()
3-14. HD Rec Malfunction……………………………………………………….. 217
3-15. Android Application Malfunction…………………………………………… 218

SAFETY NOTES
SECTION 1
RB1G CHASSIS
W900A/904A/905A
1-2. Caution Handling of LCD Panel
When repairing the LCD Panel, make sure you are grounded with a wrist band.
When repairing the LCD Panel on the wall, the panel must be secured using the
1-1. Warnings and Caution
1) These servicing instructions are for use by qualified service personnel only.
2) To reduce the risk of electric shock, do not perform any servicing other than 4 mounting holes on the rear cover.
1) Do not press the panel or frame edge to avoid the risk of electric shock.
2) Do not scratch or press on the panel with any sharp objects.
3) Do not leave the module in high temperature or in areas of high humidity for
that contained in the operating instructions unless you are qualified to do so.
3) An isolation transformer should be used during any service to avoid
Possible shock hazard, because of live chassis. The chassis of this receiver is
directly connected to the ac power line.
3)
Do
not
leave
the
module
in
high
temperature
or
in
areas
of
high
humidity
for
an extended period of time.
4) Do not expose the LCD panel to direct sunlight.
5) Avoid contact with water. It may cause short circuit within the module.
4) Be sure to follow these guidelines to protect you
r
property and
avoid causing serious injury :
• Carry the TV with an adequate number of people; larger size TVs require
two or more people.
Ct
hd
lt
hil
i
th
TV
i
itt
f
6) Disconnect the AC power when replacing the backlight (CCFL) or
inverter circuit. (High voltage occurs at the inverter circuit at 650Vrms)
7) Always clean the LCD panel with a soft cloth material.
8) Use care when handling the wires or connectors of the inverter circuit
•
C
orrec
t
h
an
d
p
l
acemen
t
w
hil
e carry
i
ng
th
e
TV
i
svery
i
mpor
t
an
t
f
o
r
safety and to avoid damages.
5) Components identified by shading and mark on the exploded views,
and in the parts list are critical for safe operation. Replace these
components
with
Sony
parts
whose
part
numbers
appear
as
shown
in
this
!
8)
Use
care
when
handling
the
wires
or
connectors
of
the
inverter
circuit
.
Damaging the wires may cause a short circuit.
9) Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
10) During the repair, DO NOT leave the Power On or Burn-in period for more
components
with
Sony
parts
whose
part
numbers
appear
as
shown
in
this
manual or in supplements published by Sony. Circuit adjustments that are
critical for safe operation are identified in this manual. Follow these
procedures whenever critical components are replaced or improper
operation
is
suspected
.
than 1 hour while the TV is face down on a cloth.
operation
is
suspected
.
Do not leave Power ON > 1 hour
5
Figure 1. TV is faced down on a cloth during repair.

Safety Notes RB1G CHASSIS
W900A/904A/905A
1-4.Leakage Test
The AC leakage from any exposed metal part to earth ground and from all
exposed metal parts to any exposed metal part having a return to chassis must
not exceed 0 5mA (500 microamperes)
1-3 Safety Check-Out
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:-
not
exceed
0
.
5mA
(500
microamperes)
.
Leakage current can be measured by any one of the three methods:-
1) A commercial leakage tester such as the SIMPSON 229 or RCA WT540A.
Follow the manufacturers instructions to use those instructions.
2) A battery-operated AC milliampmeter The DATA PRECISION 245 digital
multimeter
is suitable for this job
1) Check the area of your repair for unsoldered or poorly soldered
connections. Check the entire board surface for solder splashes and bridges.
2) Check the inter board wiring to ensure that no wires are pinched or
contact high-wattage resistors.
3
)Ch k
ll
tl
kb
hi ld
d
t
d
ti
multimeter
is
suitable
for
this
job
.
3) Measuring the voltage drop across a resistor by means of a VOM or battery
operated AC voltmeter. The 'limit' indication is 0.75V so analog meters must
have an accurate low voltage scale. The SIMPSON'S 250 and SANWA SH-
63TRD are examples of passive VOMs that are suitable. Nearly all battery
operated digital multimeter that have a 2 VAC range are suitable
3
)Ch
ec
k
a
ll
con
t
ro
l
k
no
b
s, s
hi
e
ld
s, covers, groun
d
s
t
raps an
d
moun
ti
ng
hardware have been replaced. Be absolutely certain you have replaced all
the insulators.
4) Look for unauthorized replacement parts, particularly transistors that
were installed during a previous repair. Point them out to the customer and
d
th i
lt
operated
digital
multimeter
that
have
a
2
VAC
range
are
suitable
.
(see Figure 2.)
recommen
d
th
e
ir
rep
l
acemen
t
.
5) Look for parts which, though functioning show obvious signs of
deterioration. Point them out to the customer and recommend their
replacement.
6) Check the line cords for cracks and abrasion. Recommend the
lt
f
h
li
d
t
th
t
rep
l
acemen
t
o
f
any suc
h
li
ne cor
d
t
o
th
ecus
t
ome
r
.
7) Check the antenna terminals, metal trim, metalized knobs, screws and all
other exposed metal parts for AC leakage. Check leakage test as described
next.
8. For safety reasons, repairing the Power board and/or Inverter board is
hibit d
pro
hibit
e
d
.Figure 2. AC voltmeter to check AC leakage
6

Safety Notes RB1G CHASSIS
W900A/904A/905A
1-5. How to Find a Good Earth Ground
1) A cold-water pipe is a guaranteed earth ground; the cover-plate retaining
screw on most AC outlet boxes is also at earth ground.
2) If the retaining screw is to be used as your earth ground verify that it is at
1-7. Handling the FLEXIBLE FLAT CABLE (FFC)
When you insert / pull out FFC, please grasp a reinforcement board and main body of
FFC.
2)
If
the
retaining
screw
is
to
be
used
as
your
earth
ground
,
verify
that
it
is
at
ground by measuring the resistance between it and a cold-water pipe with an
ohmmeter. The reading should be zero ohms.
3) If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble-
light (not a neon lamp) between the hot side of the receptacle and the
retaining screw Try both slots if necessary to locate the hot side on the line;
retaining
screw
.
Try
both
slots
,
if
necessary
,
to
locate
the
hot
side
on
the
line;
the lamp should light at normal brilliance if the screw is at ground potential
(see Figure 3).
1-6. Lead Free Information
Figure 3. Checking for earth ground.
The circuit boards used in these models have been processed using Lead
Free Solder. The boards are identified by the LF logo located close to the
board designation.
Main Board Main Board
Figure 4: LF Logo Figure 5: LF logo on circuit board
Th i i f th b d i i l ti It i t l
7
Th
e serv
i
c
i
ng o
f
th
ese
b
oar
d
s requ
i
res spec
i
a
l
precau
ti
ons.
It
i
s s
t
rong
l
y
recommended to use Lead Free Solder material in order to guarantee optimal
quality of new solder joints. < Insertion> <Pull out>

Safety Notes RB1G CHASSIS
W900A/904A/905A
CAUTION: During this disassemble, please ensure the TV set is on the flat surface table/desk and put on Soft
Cushion sheet/ Protection Sheet to prevent form TV scratch.
( Confirm all screws & positions before removing)
1-8. Procedure to remove Rear Cover
HG 55”
1. All screws should be remove on
rear cover and AC except stand
joint screw
2. Remove stand by pull down as
direction then remove joint screw 3. Pull out sound reflector left & right
AC
cover
AC
cord
4. Remove AC cover (plastic). Pull
out AC cord 5. Forefinger & middle finger
clutched AC cover hole bottom
side
6. The 1st Servicers both hands to
pull up rear cover
cover
cord
8

Safety Notes RB1G CHASSIS
W900A/904A/905A
1-8. Procedure to remove Rear Cover
(
continue
)
()
7
The 1
st
operator use left hand to
8
The 2
nd
operator use right hand
9
The two operator put up the rear
7
.
The
1
operator
use
left
hand
to
pick rear cover top side
8
.
The
2
operator
use
right
hand
to pick rear cover top side
9
.
The
two
operator
put
up
the
rear
cover together
Notes & Caution Point
1. 40” :Need One Servicer.
2. 46” & 55” :Need two Servicers.
3
Hands need glove
3
.
Hands
need
glove
.
4. Procedure of remove rear cover
will be same with all inch
5. Rear cover of bottom side is
easy to deform
easy
to
deform
.Red area is caution
Rear cover of bottom side is
easy to deform.
9

Safety Notes RB1G CHASSIS
W900A/904A/905A
1-9. Procedure to re-assemble Rear Cove
r
Assemble rear cover as a direction
1. Assemble rear cover as a
direction 2. Lay down rear cover top side
to assemble 3. Check all side whether its
p
ro
p
erl
y
insert 4. Put reflector left & right
Alignment: Bottom right corner
ppy
5. Tighten all screw for rear
cover, reflector, AC cover &
stand
j
oint screw exce
p
t four
7 Put stand as direction and tighten
jp
stand screw
6. Connect AC cord connector, install AC cover
& tighten the screw
7
.
Put
stand
as
direction
and
tighten
four stand screw
10

Safety Notes RB1G CHASSIS
W900A/904A/905A
1-10. Caution Of Rear Cover
NG to grab
(sharp edge and easy to
deform)
(sharp
edge
and
easy
to
deform)
OK to grab
(curling area)
OK to grab ith care
OK
to
grab
w
ith
care
(easy to deform area)
(40”, 46”, 55” rear cover will be same sharp edge area)
11

Safety Notes RB1G CHASSIS
W900A/904A/905A
SCREW
+PSW
SCREW
+
PSW
M3
ｘ
6
1-11. Instruction about Disassembling Smart Core
1. Remove screws.
3. Remove Smart Core Cover.
a) HG/MD/LK/LS/MW Model b) TE Model
a) HG/MD/LK/LS/MW Model
SCREW
+PSW
M3ｘ6
SCREW
PSW
M3
ｘ
6
（ONLY HG）b) TE Model
SCREW +BVTP 3ｘ10 SCREW +BVTP 3ｘ10
Pull left side.
Don’t pull right side
Pull left side.
Smart Core Cover Smart Core Cover
Recommended disassemble position
ORNAMENT
Don’t
pull
right
side
.
h
ave a hook only right side.
Lay the display face down on a
work surface that is lager than
the TV and make space in front
of ORNAMENT.
2 Take off Harness from Hook
h
ave
a
hook
only
right
side.
4. Remove Smart Core from SET.
a) HG/MD/LK/LS/MW Model
a) HG/MD/LK/LS/MW Model b) TE Model
2
.
Take
off
Harness
from
Hook
.
12
Rotate Smart Core to direction unplug

Safety Notes RB1G CHASSIS
W900A/904A/905A
(Continue from 4b)
Release Smart Core Bracket
Wipe scratch marks on BEZEL flame
a) HG/MD/LK/LS/MW Model
TE M d l
(Continue from 4a)
Scratch marks by Smart Core remain on BEZEL flame.
TE
M
o
d
e
l
Smart Core Bracket (Only TE)
Wipe marks
BACK
It moves bottom side with moving on Bracket to back side.
5.Release connector & harness.
b) TE Model
Lock
BOTTOM
a) HG/MD/LK/LS/MW/TE Model
Lock
unplug
13

Safety Notes RB1G CHASSIS
W900A/904A/905A
6.Release Lid/Case Hook (2 position). 8.Release Ornament/Case Hook (1 position).
Pinch and rotate case hook by flat plate (ex Steel ruler)
a) HG/MD/LK/LS/MW/TE Model HG/MD/LK/LS/MW/TE Model
Case
Pinch
and
rotate
case
hook
by
flat
plate
(ex
.
Steel
ruler)
.
Lid
Put your finger at this position.
This makes it easy to release hook.
CASE
ORNAMENT
9.Remove HIR PWB.
7.Remove Smart Core Lid.
HG/MD/LK/LS/MW/TE Model
HG/MD/LK/LS/MW/TE Model
LID, SC
14
HIR PWB

Safety Notes RB1G CHASSIS
W900A/904A/905A
10.Remove Wifi PWB and BT PWB. Finish!
TE Model
HG/MD/LK/LS/MW Model
HG/MD/LK/LS/MW/TE Model
Wifi PWB
HG/MD/LK/LS/MW
Model
Cover
Cover
Bracket
BT PWB
common
Lid
Case
HSC PWB WiFiBT
Lid
Case
11 R l HSC/C H k PWB (2 i i )
d HSC PWB
common
HIR PWB
11
.
R
e
l
ease
HSC/C
ase
H
oo
k
PWB
(2
pos
i
t
i
on
)
an
d
remove
HSC
PWB
.
HSC PWB
CASE Ornament
HG/MD/LK/LS/MW/TE Model
Remove HSC PWB pinching and rotating this hook
15
Remove
HSC
PWB
pinching
and
rotating
this
hook
.

SECTION 2
SELF DIAGNOSTIC FUNCTION
2-1. Overview of Control Buttons
Self Diagnostic Function
2-1-1. (EXCEPT CHINA) 2-1-2. (CHINA)
TV CONTROLS/ TERMINALS/ INDICATOR
FRONT TV CONTROLS/ TERMINALS/ INDICATOR
FRONT
Sensors and illumination
(Remote control sensor/Light sensor) Sensors and illumination
(Remote control sensor/Light sensor)
Example Illumination lights up or blinks in different
colours according to the status of the TV
( details refer to 2
-
2 LED Display Control)
Example Illumination lights up or blinks in different
colours according to the status of the TV
( details refer to 2
-
2 LED Display Control)
RIGHT RIGHT
(
details
refer
to
2
-
2
.
LED
Display
Control)
(
details
refer
to
2
2
.
LED
Display
Control)
CH+/-
(
Channel
)
/ / , +/- (Channel) / / ,
频道
Power
Turn the TV on
or switch to
standby mode
INPUT SELECT /
()
+/- (Volume) / / .
Press to select the next or
previous channel.
Press to adjust the volume.
In TV Home Menu: buttons
will work as , , , .
+/- (Volume) / / .
Press to select the next or
previous channel.
Press to adjust the volume.
In TV Home Menu: buttons
will work as , , , .
INPUT SELECT /
Power
Turn the TV on
or switch to
standby mode
频道 -
频道 +
USB 2/3
Press to see
photo, music
and video files
stored on a USB device. HOME
Press to display the TV
SELECT/ CONFIRM
Press to select the next or
previous channel.
In TV Home Menu: buttons
will work as (select/confirm)
6
INPUT
SELECT
/
SELECT/ CONFIRM
Press to select the next or
previous channel.
In TV Home Menu: buttons
will work as (select/confirm)
USB 2/3
Press to see
photo, music
and video files
stored on a
USB device. Press to display the TV
Home Menu
主菜单
主菜单
16
Press
to
display
the
TV
Home Menu.
Home
Menu
.

Self Diagnostic Function
2-4. Standby LED Error Display
2-2. LED Display Control
Status White Center LED Side RGB LED Side Amber LED Remarks
Power Off
( by power saving switch
off and *1) Off Off Off *1 power switch off (by side
key)
Power On
White
Off
Off
Main-micro is in normal
Note: Details refer to Troubleshooting Section.
Smart Core RED
LED blinking
count Detection Items Board Error Item
Power
On
White
Off
Off
operation
Standb
y
( by remote control off only
)Off Off Off Main-micro block is in sleep
mode
Skype Call Receive white white blinking Off
Picture Off White looping
breathing
one time blinking Off
Main 19.5Vfailure [MAIN_POWE] Power Adaptor
* This failure is notsaved B* Board Error
Main 5.0/3.3/1.8/1.0/1.1Vfailure [DC_ALERT]
* 5.0/1.0Vfailures are notsaved.
B* Board Error

Speaker Error
2x
B* Board Error
Audio amp.protection [AUD_PROT]
breathing
Device Connection White cyan Off
Set "On Timer"/ Reminder
/
Set "Rec Timer"
( Power On ) White Orange Off
Set "On Timer"/ Reminder
/
Set "Rec Timer" Off Off Orange

Speaker
Error
HDMI equalizer/switch I2C NACK [HDMI_EQ]
*There is Temp.sensor on the same I2C bus B* Board Error
Tuner or demodulator I2C NACK [TU_DEMOD] B* Board Error
AFE device I2C NACK
[
AFE I2C
]


B* Board Error
3x
( Standby )
Failure Off Red
Blinking Off
The number of LED blinking
indicates cause of failure
( refer to the table of next
page )
A
ging mode white Green Blinking Off Blinking:0.5sec On / 0.5sec
Off
[
_
]

AFE device SPI NACK [AFE_SPI]
(only for AEP,CH,HK) B* Board Error
LED Driver Error
Panel Module
T Con Error [TCON ERR]
(MD/MW/HG/TE
LED Driver Error [LD_ERR] (HG/TE Model)
4x
Off
End of Aging mode White Green Blinking Off Blinking:3sec On / 3sec Off
Software Updating white blinking white blinking off
Software Updating finish Off Blue lit off
Test Reset White white blinking Off
Error of panel ID Off Green Blinking Orange
Blinking Blinking:0.5sec On / 0.5sec Off
REC [AEP/J l ]
Whit
Rd(Pik)Lit
Off
T
Con
Error
[TCON
_
ERR]
(MD/MW/HG/TE
Model) Tcon Board
Panel module
Tcon board
G* Board Error
B* Board Error
Panel ID EEPROMI2C NACK (Also panel
powerfailure is a suspect) [P_ID_ERR]
5x
REC
[AEP/J
on
l
y
]
Whit
e
R
e
d(Pi
n
k)
Lit
Off
Picture Frame White Orange Off
ePOP/
Shop Illumination White Cyan Lit/
Cyan loop Off One shot Center White when
feature change
When safety shutdown occurs, Standby LED display reports the cause by using the lightning
patterns as indicated below
2-3. LED Pattern
6x LED driver [BACKLITE] LED Driver (LD) Board Error
Overtemperature protection [TEMP_ERR]
*Temp. sensor I2C NACK [TEMP_ERR] *There
is HDMI Eq on the same I2C bus.
8x Software Error (VPS/MEPS/HOST/STBY/AFE
WDT)

B* B d E
7x
B* Board Error
patterns
as
indicated
below
.
3.0sec 3.0sec
0.5sec Size B* Board Type G* Board Type
OTHERS
JP
WDT)


B*
B
oar
d
E
rror
17
0.5sec
Example: The figure above shows LED display when SHUTDOWN is caused by Audio
Error. It repeats flashing for a specified number of times in 0.5sec/cycle and has a 3 seconds
interval of lighting off. Please note that a 3 seconds interval of lighting off is fixed regardless of abnormal state types.
OTHERS
JP
40” BA2-S BA2-W G1A
46” BA2-S BA2-W G1A
55” BA2-S BA2-W G1B

Self Diagnostic Function
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
Green
LED
Blinkin
g
No
Power Video - missing or distorted Remote Network Audio Skype Smart Core Bluetooth (BT)
2-5. Triage Chart
Reference
g
2345 6 7 8*10
(n/a)
Green
LED non-
stop
Blinking
No White Power
LED & does not
reponse to remote
(Dead Set)
Stationary
colored
lines or
dots
No video
One of
Inputs
No video
all Inputs No Remote
Wireless
can't
connect
No
Audio Skype Can't Work
Smart Core no
LED (Set is
still alive)
Bluetooth /
One Step
Remote
(OSR) can't
connect
B* Board    


 
G* Board 

H* Board (IR)  
H**
Board (SC)




H**
Board
(SC)




Speaker 
Skype Module 
Wifi Module   
BT Module 
LD* Board 
LVDS FFC  
Tcon   
LCD Panel   

Problem Power Power LD Panel
(Tcon) Panel (Backlight) TEMP Soft- ware Emitter
Audio FAN
(
N/A
)
Size
B*
Board Type
G*
Board
H*
H**
Board
Note: Details refer to Troubleshooting Section.
()
Local
I2C
Size
B*
Board
Type
G*
Board
Type
H*
Board
Type
H**
Board
Type
OTHERS JP
40” BA2-S BA2-W G1A HIR HSC
46”
BA2
S
BA2
W
G1A
HIR
HSC
Secondary possible defective part
Most likely defective part
46”
BA2
-
S
BA2
-
W
G1A
HIR
HSC
55” BA2-S BA2-W G1B HIR HSC
18

RB1G CHASSIS
W900A/904A/905A
SECTION 3
TROUBLESHOOTING
3-1. No Power Note: For location details, refer to troubleshooting Reference for parts location.
No Power
Check STBY 3.3V
L9101 (B-others)
C9318 (BK*) G* Board
Replace
Between G* Board to
B* Board Harness
NG NG
OK
Harness
OK
OK
B* Board
DC/DC converter check
NO POWER: Ayu2 control
Size B* Board Type G* Board
Type
OTHERS JP
40” BA2-S BA2-W G1A
19
46” BA2-S BA2-W G1A
55” BA2-S BA2-W G1B

RB1G CHASSIS
W900A/904A/905A
Troubleshooting
Troubleshooting Reference
Board
Name Board PWB (A side) Detail
BA2-S
(L9101) L9101
BA2-W
(L9101) L9101
BM
(L9101)
L9101
20