Sony KDL-32W700B, KDL-42W800B, KDL-50W805B, KDL-55W790B, KDL-55W807B Service manual
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
Self Diagnosis
Supported model
SERVICE MANUAL
ELECTRICAL SERVICE INTERNAL DISTRIBUTION ONLY
MODEL COMMANDER DESTINATION
KDL-32W700B RM-YD103 US / Canada
KDL-32W700B RM-YD103 Mexico / Latin America
KDL-42W700B RM-YD103 US / Canada
KDL-42W800B RM-YD103 Mexico / Latin America
KDL-42W805B RM-YD099 Brazil
KDL-50W700B RM-YD103 US / Canada
KDL-50W790B RM-YD102 US / Canada
KDL-50W800B RM-YD102 US / Canada
KDL-50W800B RM-YD102 Mexico / Latin America
KDL-50W805B RM-YD099 Argentina
KDL-50W805B RM-YD099 Brazil
RB2G
Segment: HE-L
CHASSIS
KDL-50W805B RM-YD099 Chile / Peru / Ecuador
KDL-50W807B RM-YD099 Colombia
LEVEL
CONFIDENTIAL
3
KDL-55W700B RM-YD103 US / Canada
KDL-55W790B RM-YD102 US / Canada
KDL-55W800B RM-YD102 US / Canada
KDL-55W800B RM-YD102 Mexico / Latin America
KDL-55W805B RM-YD099 Brazil
KDL-55W805B RM-YD099 Chile / Peru
KDL-55W807B RM-YD099 Colombia
ORIGINAL MANUAL ISSUE DATE: 2/2015
REVISION DATE SUBJECT
2/6/2015 Original Manual Release Date
9-883-559-51
LCD DIGITAL COLOR TV
Chassis: RB2G, HE-L
TABLE OF CONTENTS
SECTION TITLE PAG E
SECTION 1: DIAGRAMS ................................................................................................................................................................................................... 8
1-1. Printed Circuit Boards and Schematic Diagrams Information ............................................................................................................................ 8
SECTION 1: DIAGRAMS ................................................................................................................................................................................................... 9
1-2. Circuit Boards Location ...................................................................................................................................................................................... 9
SECTION 2: TROUBLESHOOTING ................................................................................................................................................................................ 10
2.1-1 - No Power: General ........................................................................................................................................................................................10
2.1-2 - No Power: AC Adaptor .................................................................................................................................................................................. 10
2.1-3 - No Power: DC/DC Converter Check ............................................................................................................................................................. 11
2.1-4 - No Power: Ayu2 Control ................................................................................................................................................................................15
2.1-5 - No Power: G Board ....................................................................................................................................................................................... 22
2.1-6 - No Power: DC/DC Converter Check ............................................................................................................................................................. 23
2.1-7 - No Power: Ayu2L Control .............................................................................................................................................................................. 25
2.1-8 - No Power: Ayu2 / Ayu2L Failure ....................................................................................................................................................................28
2.1-9 - No Power: Ayu2 / Ayu2L Replacement .........................................................................................................................................................29
2.2-1 - Led Blinking: 3X DC Alert & Communication Error .......................................................................................................................................30
2.2-2 - Led Blinking: 3X (Audio Error) - BAX-L (HE-L,HM,HE-H) Board Only ..........................................................................................................39
2.2-3 - Led Blinking: 4X Led Voltage Error ...............................................................................................................................................................42
2.2-4 - Led Blinking: 5X T-CON Error .......................................................................................................................................................................43
2.2-5 - Led Blinking: 6X Backlight Error ....................................................................................................................................................................46
2.2-6 - Led Blinking: 7X Temperature Error .............................................................................................................................................................. 49
2.3-1 - No Sound: General .......................................................................................................................................................................................51
2.3-2 - No Sound: Audio (For All Models) TUS and BAX (HT-L, HT-H, HT-H65, HS) ............................................................................................... 52
2.3-3 - No Sound: Audio (For All Models) BAX-L (HE-L, HM, HE-H) Board Only ..................................................................................................... 56
2.3-4 - No Sound: Main Board Power Off Checking (Main Speaker L & R) For BAX-L (HEL, HEH, HM) Board Only ............................................. 59
2.3-5 - No Sound: Main Board Power Off Checking (Main Speaker L & R) For BAX-L (HEL, HEH, HM) Board Only ............................................. 61
2.3-5 - No Sound: Main Board Power Off Checking (Main Speaker L & R) For BAX-L (HEL, HEH, HM) Board Only ............................................. 62
2.3-6 - No Sound: HP/Lineout Only For BAX-L (HEL, HEH, HM) Board Only .......................................................................................................... 68
2.3-7 - No Sound: Tuner ...........................................................................................................................................................................................71
2.3-8 - No Sound: HDMI ........................................................................................................................................................................................... 72
2.3-9 - No Sound: MHL .............................................................................................................................................................................................73
2.4 - RB2 Analog Signal Path ...................................................................................................................................................................................76
2.5-1 - No Picture: (BAX + TUS) ............................................................................................................................................................................... 77
2.5-2 - No Picture: Input Skip Function - BAX/BAX-L ............................................................................................................................................... 78
2.5-3 - No Picture: Tuner ..........................................................................................................................................................................................79
2.5-4. Tuner COL-T2 / BRZ / ARG ............................................................................................................................................................................ 86
2.5-5 - No Picture: HDMI ..........................................................................................................................................................................................99
2.5-6 - No Picture: HDMI (BAX-L & BAX Board) ....................................................................................................................................................102
2.5-7 - No Picture: MHL (BAX-L) ............................................................................................................................................................................108
2.5-8 - No Picture: MHL (BAX) ............................................................................................................................................................................... 11 0
2.5-9 - No Picture: LD Models Only ........................................................................................................................................................................ 112
2.5-10 - No Picture: All Model ................................................................................................................................................................................. 11 3
2.6 - Side Buttons Malfunction ................................................................................................................................................................................ 118
Chassis: RB2G, HE-L 2
2.9 - Network Malfunction: Ethernet (Wired) ..........................................................................................................................................................121
2.10 - 3D-Glasses(Active) Malfunction ................................................................................................................................................................... 124
2.11-1 - Wireless Network Malfunction ................................................................................................................................................................... 125
2.11-2 - Wireless Network Malfunction (Continue) ................................................................................................................................................. 126
2.12 - Bluetooth Malfunction ................................................................................................................................................................................... 127
SECTION 3: POWER BOARD .......................................................................................................................................................................................128
3.1 - Power Board: BAX-L (A SIDE) ....................................................................................................................................................................... 128
3.2 - Power Board: BAX-L (B SIDE) .......................................................................................................................................................................129
3.3 - Power Board: Tuner .......................................................................................................................................................................................130
3.4 - Board Schematic ............................................................................................................................................................................................ 131
SECTION 4: ELECTRICAL PART LIST ........................................................................................................................................................................ 155
APPENDIX A: ENCRYPTION KEY COMPONENTS ..................................................................................................................................................... A-1
Chassis: RB2G, HE-L 3
Chassis: RB2G, HE-L
CAUTIONS AND WARNINGS
CAUTION
. To reduce the risk of electric shock, do not
WARNING!!
An isolation transformer should be used during any service to avoid possible shock hazard, in case of live chassis.
!
SAFETY-RELATED COMPONENT WARNING!!
shading and
NOTE: Do not modify the original design without obtaining written permission from the manufacturer or you will void the
original parts and labor warranty.
!
mark on the schematic diagrams and the parts list. It is essential that these critical parts be replaced only
ATTENTION!!
ainsi.
ALERTE!!
lors de tout dépannage.
!
ATTENTION AUX COMPOSANTS
RELATIFS A LA SECURITE!!
!
sur les schemas de principe, les vues explosees et
les listes de pieces sont d’une importance critique pour la securite du fonctionnement. Ne les remplacer que par des
composants Sony dont le numero de piece est indique dans le present manuel ou dans des supplements publies par
present manuel. Suivre ces procedures lors de chaque remplacement de composants critiques, ou lorsqu’un mauvais
fonctionnement suspecte.
Chassis: RB2G, HE-L 4
Chassis: RB2G, HE-L
USE CAUTION WHEN HANDLING THE LCD PANEL
When repairing the LCD panel, be sure you are grounded by using a wrist band.
When installing the LCD panel on a wall, the LCD panel must be secured using the 4 mounting holes on the rear
cover.
To avoid damaging the LCD panel:
1. Do not press on 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 temperatures 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 a short circuit within the module.
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. Damaging the wires may cause a
short.
9. Protect the panel from ESD to avoid damaging the
electronic circuit (C-MOS).
10. During the repair, DO NOT leave the Power On for
more than 1 hour while the TV is face down on a
cloth.
CLEANING THE LCD PANEL
CAUTION: When cleaning the TV, be sure to unplug the power cord to avoid any chance of electric shock.
Clean the cabinet of the TV with a dry soft cloth.
Wipe the LCD screen gently with a soft cloth.
Stubborn stains may be removed with a cloth slightly moistened with a solution of mild soap and warm water.
If using a chemically pretreated cloth, please follow the instruction provided on the package.
Never use strong solvents such as a thinner, alcohol or benzine for cleaning.
Periodic vacuuming of the ventilation openings is recommended to ensure proper ventilation.
Do Not use paper towels, any type of abrasive pad, rags, rubber or vinyl materials to clean the screen. Using
these materials could easily scratch the screen which may result in permanent damage.
Do Not use any cleaning product containing alkaline/acid cleaner, scouring powder, or volatile solvent, such as
alcohol, ammonia, benzine, thinner or insecticide. Using any of these harsh cleaners may result in permanent
damage to the screen.
Do Not spray water or detergent directly onto the TV screen . If liquid drips into the bottom of the screen it may
cause a failure.
SETTING UP AND CARRYING THE TV
• Disconnect all cables when carrying the TV.
• Carry the TV with the adequate number of people; larger size TVs require two or more people.
• Correct hand placement while carrying the TV is very important for safety and to avoid damage.
Chassis: RB2G, HE-L 5
SAFETY CHECK-OUT
Trouble Light
Chassis: RB2G, HE-L
After correcting the original service problem, perform the
following safety checks before releasing the set to the
customer:
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 interboard wiring to ensure that no
wires are “pinched” or touching high-wattage
resistors.
3. Check that all control knobs, shields, covers,
ground straps, and mounting hardware have been
replaced. Be absolutely certain that 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 recommend their replacement.
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 replacement of any such line
cord to the customer.
7. Check the antenna terminals, metal trim,
“metallized” knobs, screws, and all other exposed
metal parts for AC leakage. Check leakage as
described in “Leakage Test”.
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
0.5 mA (500 microamperes). Leakage current can be
measured by any one of three methods.
1. A commercial leakage tester. Follow the
manufacturers’ instructions provided with the
tester.
2. A battery-operated AC milliammeter.
3. Measuring the voltage drop across a resistor
by means of a VOM or battery-operated AC
voltmeter. The “limit” indication is 0.75 V, so
analog meters must have an accurate low
voltage scale. Nearly all battery-operated digital
multimeters that have a 2 VAC range are suitable.
(see Figure A)
To Exposed Metal
Parts on Set
AC
0.15 µF
Voltmeter
(0.75V)
Chassis: RB2G, HE-L 6
Earth Ground
Figure A. Use an AC voltmeter to check AC leakage.
HOW TO FIND A GOOD EARTH GROUND
The cover-plate retaining screw on most AC outlet boxes
is at earth ground. Verify the AC outlet box retaining screw
ground by connecting a 60W to 100W incandescent
of the receptacle and the 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 B)
AC Outlet Box
Figure B. Checking for earth ground.
Chassis: RB2G, HE-L
Th
e circuit boards used in these models have been processed using
Due
This
Lead Free Solder. The boards are identified by the LF logo located
close to the board designation e.g. H1 etc [ see example ]. The
servicing of these boards requires special precautions to be taken as
outlined below.
example
It is strongly recommended to use Lead Free Solder material in order to guarantee optimal quality of new solder joints.
Lead Free Solder is available under the following part numbers :
rebmuntraP retemaiD skrameR
91-500-046- m7 m3. g0 K52.0
02-500-046- m7 m4. g0 K05.0
12-500-046- m7 m5. g0 K05.0
22-500-046- m7 m6. g0 K52.0
32-500-046- m7 m8. g0 K00.1
42-500-046- m7 m0. g1 K00.1
52-500-046- m7 m2. g1 K00.1
62-500-046- m7 m6. g1 K00.1
to the higher melting point of Lead Free Solder the soldering iron tip temperature needs to be set to 370 degrees celsius.
requires soldering equipment capable of accurate temperature control coupled with a good heat recovery characteristics.
HANDLING THE FLEXIBLE FLAT CABLE (FFC)
When you connect / disconnect the FFC, please hold
Reinforcement Plastic and FFC Cable as shown below:
GOOD
Connect LVDS
holding both the
FFC Cable and
reinforcement
plastic.
GND Shield must be facing up
Terminal Side must be facing down
GOOD
DO NOT pull
or insert
LVDS holding
only from the
reinforcement
plastic.
NOT
To avoid any damage to the Connector and/or the FFC Cable
follow the steps show:
Press and Hold both Release Buttons at
the sametime to Pull out/ connect FFC
Release Buttons
from CN8700
If pulled without pressing both Release
Buttons, FFC Connector will break on
CN8700. This will cause 5X Blinking error.
GOOD NOT GOOD
Chassis: RB2G, HE-L 7
Chassis: RB2G, HE-L
Terminal name of semiconductors in silk screen
SECTION 1: DIAGRAMS
1-1. PRINTED CIRCUIT BOARDS AND SCHEMATIC DIAGRAMS INFORMATION
REFERENCE INFORMATION
All capacitors are in µF unless otherwise noted. pF : µµF 50WV or
less are not indicated except for electrolytics and tantalums.
All electrolytics are in 50V unless otherwise specied.
All resistors are in ohms. kΩ=1000Ω, MΩ=1000kΩ
Indication of resistance, which does not have one for rating
electrical power, is as follows: Pitch : 5mm
Rating electrical power :
1
/4 W in resistance, 1/
W and 1/
10
W in chip resistance.
16
1
/4 W
: nonammable resistor
: fusible resistor
RESISTOR
: RN METAL FILM
: RC SOLID
: FPRD NONFLAMMABLE CARBON
: FUSE NONFLAMMABLE FUSIBLE
: RW NONFLAMMABLE WIREWOUND
: RS NONFLAMMABLE METAL OXIDE
: RB NONFLAMMABLE CEMENT
: ADJUSTMENT RESISTOR
COIL
: LF-8L MICRO INDUCTOR
: internal component
: panel designation and adjustment for repair
: earth ground
printed circuit ( )
Device Printed symbol Terminal name
Transistor
1
*
: earth-chassis
Transistor
2
All variable and adjustable resistors have characteristic curve B, unless
3
Diode
Cathode
otherwise noted.
Readings are taken with a color-bar signal input.
Readings are taken with a 10MΩ digital multimeter.
Voltages are DC with respect to ground unless otherwise noted.
Voltage variations may be noted due to normal production
tolerances.
All voltages are in V.
S : Measurement impossibility.
: B+line.
: B-line. (Actual measured value may be different).
: signal path. (RF)
Circled numbers are waveform references.
The components identied by shading and ! symbol are critical for safety. Replace
only with part number specied.
The symbol indicates a fast-blow fuse and is displayed on the component
side of the board. Replace only with fuse of the same rating as marked.
NOTE: The components identied by a red outline and a mark contain condential
information. Specic instructions must be adhered to whenever these components
are repaired and/or replaced.
See Appendix A: Encryption Key Components in the back of this manual.
Diode
Diode
5
Diode
6
Diode
7
8
Diode
Diode
9
Diode
10
Diode
11
Diode
12
Transistor
13
(FET)
Transistor
14
(FET)
Transistor
15
(FET)
Transistor
16
Transistor
17
Transistor
18
Transistor
19
Transistor
20
Transistor
21
Transistor
22
Transistor
23
Discrete semiconductor
–
(Chip semiconductors that are not actually used are included.)
Anode
Anode
Anode
Anode Cathode
Anode
Anode Anode
Cathode
Cathode
Anode
Anode
Cathode
4
Chassis: RB2G, HE-L 8
CAPACITOR
: TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
: PT MYLAR
: MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
: ALT HIGH TEMPERATURE
: ALR HIGH RIPPLE
Collector
Base
Collector
Base
Cathode
Cathode
Common
Common
Common
Common
Common
Common
Drain
Drain
C2
C1
E1
E2
C2
B1
E2
C2
Emitter
Emitter
(NC)
(NC)
Cathode
Anode
Cathode
Cathode
Cathode
Anode
Anode
Source
Gate
Source
Gate
Source
Drain
Gate
Emitter
Collector
Base
B1 E1
B2 C1E2
B2 E2
B1 C2
B2 E2C1
B1 C2E1
B2 E2C1
B1 C2E1
B1 E1
C1(B2)
(B2)
E1
E2
C2C1
(B2)
E1
B1
C1
Anode
Circuit
D
G
D
S
B1
B1
B1
B1
B1
B1
D
G
S
S
D
G
S
C2
C1
B2
E1
E2
C2
C1
B2
E1
E2
E2
E1
B2
C1
C2
C2C1(B2)
E2
E2
E2E1(B2)
C1
C2
C2E1(B2)
C1
C2
Ver.1.6
G
1-2. CIRCUIT BOARDS LOCATION
Chassis: RB2G, HE-L
SECTION 1: DIAGRAMS
LD BOARD
LD BOARD
TUS BOARD
MAIN BOARD
(BAX BOARD)
SMART CORE
SWITCH
UNIT
TUS BOARD
LD BOARD
SMART CORE
Figure 1-2. 42” ModelsFigure 1-1. 32” Models
WIRELESS
LAN CARD
HSC2-S BOARD
TUS BOARD
MAIN BOARD
(BAX BOARD)
SMART CORE
SWITCH
UNIT
BT MODULE
Figure 1-3. 50”/55” Models Figure 1-4. Smart Core
MAIN BOARD
(BAX BOARD)
SWITCH
UNIT
Chassis: RB2G, HE-L 9
SECTION 2: TROUBLESHOOTING
RB2G CHASSIS
W700B/ W800B
TROUBLESHOOTING
SECTION 2
2-1
. No
Power
No Power
2-1-2. No Power
AC Adaptor
2-1-1. General
NG
NG
Check STBY 3.3V
L9107
Adapter
Replace
Between LD* Board to
B* Board Harness
NG
OK
Replace
LD* Board
OK
Harness
OK
LD* Board
For HT, HM, change LD board.
For HE, change Panel.
B
Board
B*B
oar
d
DC/DC converter check
NO POWER: Ayu2 control
L9107
1-2. No Power
AC Adaptor
OK
B*B
d
[2.1 - NO POWER]
2.1-1 - NO POWER: GENERAL 2.1-2 - NO POWER: AC ADAPTOR
Chassis: RB2G, HE-L
No Power
Check STBY 3.3V
L9107 or C9179
OK
*
Board
Name
BAX
(L9107)
NG
NO POWER: Ayu2 control
Replace
Between G* Board to
B* Board Harness
OK
Harness
DC/DC converter check
NG
Board PWB (B side) Detail
G* Board
No Power
Check STBY 3.3V
L9107
oar
NG
Replace
Between LD* Board to
B* Board Harness
OK
Harness
DC/DC converter check
NO POWER: Ayu2 control
NG
Replace
LD* Board
OK
LD* Board
For HT, HM, change LD board.
For HE, change Panel.
NG
Adapter
BAX
(C9179)
Chassis: RB2G, HE-L 10
C9179
2.1-3 - NO POWER: DC/DC CONVERTER CHECK
RB2G CHASSIS
W700B/ W800B
Troubleshooting
-
-
-
213. No Power
DC/DC converter check
y
yes
y
Chassis: RB2G, HE-L
Check C9007 Voltage.
Is the voltage 1V?
Check C9192 Voltage.
Is the voltage 5V?
Check C9153 Voltage.
Is the voltage 3.3V?
Check C9172 Voltage.
Is the voltage 1.5V?
START
yes
yes
yes
no
no
no
no
Check F9105
Check F9102
Check F9104
Check F9104
Check C9167 is
it 1.18V?
es
END
no
Check F9106
Chassis: RB2G, HE-L 11
BAX
Board
PWB (A side)
Detail
BAX
BAX
Chassis: RB2G, HE-L
C9007
F9105
Chassis: RB2G, HE-L 12
C9192
F9102
Chassis: RB2G, HE-L
BAX Board PWB (A side) Detail
C9172
BAX
BAX
F9104
C9153
F9104
Chassis: RB2G, HE-L 13
RB2G CHASSIS
W700B/ W800B
Troubleshooting
BAX Board PWB (A side) Detail
BAX
Chassis: RB2G, HE-L
C9167
F9106
Chassis: RB2G, HE-L 14
2.1-4 - NO POWER: AYU2 CONTROL
-
4. No Power
:
Ayu2
control
No Power
(
(, , p
at
CN9101 pin10
or G
board
STBY_3.3V
is NG.
at
AYU2
look for where
NG
Check
REG+12V
NG
Check Xtal oscillation
NG
Chassis: RB2G, HE-L
Check STBY_+3.3V
F11, G11, K13 pin
C7348)
OK
Check STBY_+1.8V
at AYU2
(K5, L5, L10, J7 pin
C7349)
OK
Check STBY_+1.0V
at AYU2
(N13, P13 pin C7350)
OK
X7302, 32.768KHz
(A7, B7 pin R7386)
at AYU2
NG
NG
look for where
+
look for where
STBY_+1.8V is NG.
STBY_+1.0V is NG.
Replace X7302 or Ayu2
Check AC_MON
at AYU2
(C6 pin C9131)
OK
Check MAIN_PWR
(A9 pin C9109)
OK
at CN9101 pin23
OK
It might be power supply problem
Please refer "DC/DC converter check" sheet
Or
NG
NG
Look for AC_MON line
Look for MAIN_POWER line
at CN9101 pin21 or replace AYU2
-
G-board
Chassis: RB2G, HE-L 15
OK
Check "STBY LED BLINKING"
Board
Name
Board
PWB (B side)
Detail
BAX
(C7348)
Chassis: RB2G, HE-L
Chassis: RB2G, HE-L 16
C7348
Chassis: RB2G, HE-L
Board
Name
Board PWB (B side) Detail
BAX
(C7349)
C7349
Name
Board
Name
BAX
(C7349)
Board
BAX
(C7350)
Board PWB (B side) Detail
C7349
Board PWB (B side) Detail
C7350
Chassis: RB2G, HE-L 17
Chassis: RB2G, HE-L
Board
Name
Board PWB (A side) Detail
BAX
(R7386)
R7386
Chassis: RB2G, HE-L 18
Chassis: RB2G, HE-L
Board
Name
BAX
(C9131)
Board PWB (A side) Detail
C9131
Chassis: RB2G, HE-L 19
Chassis: RB2G, HE-L
Board
Name
Board PWB (A side) Detail
BAX
(C9109)
C9109
Chassis: RB2G, HE-L 20
Chassis: RB2G, HE-L
Name
23)
Board
BAX
(CN9101 Pin
Board PWB (A side) Detail
CN9101 Pin 23
Chassis: RB2G, HE-L 21
2.1-5 - NO POWER: G BOARD
RB2G CHASSIS
W700B/ W800B
Troubleshooting
*
No Power
2-1-5. No Power
G Board
Check STBY 3.3V
L9107
G* Board
Replace
Between G* Board to
B* Board Harness
NG
NG
Harness
OK
OK
B* Board
DC/DC converter check
NO POWER: Ayu2 control
Board Name
Board PWB (A side) Detail
BAX-
L
1.L9107
L9107
1
1
Chassis: RB2G, HE-L
Chassis: RB2G, HE-L 22
2.1-6 - NO POWER: DC/DC CONVERTER CHECK
RB2G CHASSIS
W700B/ W800B
Troubleshooting
2-1-6. No Power
-
DC/DC converter check
START
yes
Check C9137 Voltage.
Is the voltage 5V?
yes
no
Check F9101
Check C9175 is
it 1.0V?
no
Chassis: RB2G, HE-L
Check F9105
Check C9192 Voltage.
Is the voltage 5V?
yes
Check C9153 Voltage.
Is the voltage 3.3V?
Check C9172 Voltage.
Is the voltage 1.5V?
yes
no
no
no
Check F9102
Check F9104
Check F9104
Check C9167 is
it 1.15V?
yes
END
no
Check F9106
Chassis: RB2G, HE-L 23
Chassis: RB2G, HE-L
Name
1.C9137 [5V]
F9104
3.C9153 [3.3V]
[1V]
[]
Board
BAX-L
F9101
2.C9192 [5V]
F9102
F9104
4.C9172 [1.5V]
F9104
5.C9175
F9105
6.C9167[1.15V]
F9106
Board PWB (A side) Detail
1 2
1 2
5
6
3,4
F910
1
F9102
C9137
C9192
5 6
C9175
F9105
3, 4
C9153
C9172
C9175
Chassis: RB2G, HE-L 24
F9106
2.1-7 - NO POWER: AYU2L CONTROL
. No
Power
:
Ayu2L
control
No Power
C7376
)
Adapter/
Gboard
failure
(C11 pin
C7334
)
at
CN9101
pin11
at
AYU2
(H19 pin
STBY_+
1.8V
is NG
at
AYU2L
look for where
Adapter/
NG
NG
Check Xtal oscillation
NG
Check
STBY LED BLINKING
Chassis: RB2G, HE-L
Check STBY_+3.3V
(H15, H16, H17 pin
Check STBY_+1.8V
Check STBY_+1.0V
(J15, J16, J17 pin
at AYU2L
OK
at AYU2L
C7374)
OK
C7380)
OK
NG
NG
look for where
STBY_+3.3V is NG.
look for where
STBY_+1.0V is NG.
Check AC_MON
at AYU2
OK
Check MAIN_PWR
.
Check +19.5V(Adapter)
(C13 pin C7315)
OK
Or +12V(G-Board)
at CN9101 pin21
NG
NG
Look for AC_MON line
at CN9101 pin12/C9131 or
Look for MAIN_POWER line
or replace AYU2
G-board
X7301, 32.768kHz
Chassis: RB2G, HE-L 25
(A23, B23 pin
R7398)
OK
Replace X7301 or Ayu2L
OK
It might be power supply problem
Please refer "DC/DC converter check" sheet
Or
"
"
Chassis: RB2G, HE-L
L
C7376
Y
5. C7334
R7396
C7334
Board
Name
BAX-
1. C7376
2. C7374
3. C7380
4. R7396
6. C7315
Board PWB ( A side ) Detail
1, 3, 4
5,6
2
1, 3, 4
C7380
U2L
A
5, 6
2
X7301
C7374
Chassis: RB2G, HE-L 26
C7315
Chassis: RB2G, HE-L
L
C7376
Y
5. C7334
R7396
C9131
Board
Name
BAX-
1. C7376
2. C7374
3. C7380
4. R7396
6. C7315
7. CN9101
Board PWB ( A side ) Detail
1, 3, 4
7. CN9101
5,6
2
1, 3, 4
5, 6
2
C7380
U2L
A
X7301
7. CN9101
C7334
C7374
Pin12
Pin11
Pin21
Chassis: RB2G, HE-L 27
C7315
2.1-8 - NO POWER: AYU2/AYU2L FAILURE
RB2G CHASSIS
W700B/ W800B
Troubleshooting
2-1-8. No Power
–
AYU2/AYU2L failure
A
YU2/L Fail Suspected
p
eMMC / RawNAND erase
Product SW rewrite
Recover?
Product SW
writin
g
issue
Yes
Find Some
Error message
AYU2/L LOG is
displayed
Yes
No
Yes
Check
eMMC / RawNAND
Check DDR
using CheckSW
Find Some
Error message
No
g
Check error message
It is unacceptable
error?
eMMC/ RawNAND
data fail
No
Store SW log,
Check SW
behaviors.
No
using CheckSW
No
DDR device fail
Yes
From the error
Erase & Replace
eMMC/ RawNAND
Yes
(1) Check
DDR &
eMMc / RawNAND
interface OK?
Replace
AYU2/L or Board
Y
es
Data fails are
especially in
environment area.
If this Area has broken,
check soft cannot run
In this case, corrupted
data are written to eMMC/
Erase
eMMC/ RawNAND
message, we can find
which device has
failure.
Move to device
analysis phase.
Product SW write
If still NG after SW rewrite,
please go to (1) Check
MMC/RawNAND interface
Replace Board
No
NAND flash in proper way
.
So, we have to check the
logs of exception or errors.
Erase eMMC/ RawNAND
is a last option. If still NG
after erase, please replace
e
MMC
/
RawNAND
Chassis: RB2G, HE-L
Chassis: RB2G, HE-L 28
2.1-9 - NO POWER: AYU2/ AYU2L REPLACEMENT
RB2G CHASSIS
W700B/ W800B
Troubleshooting
2-1-9. No Power
–
AYU2/ AYU2L replacement
Recover?
Board Issue
AYU2/L
issue
AYU2/L
replacement flow
Chassis: RB2G, HE-L
eMMC / RawNAND erase
AYU2/L replacement
Product SW write
No
Yes
Data on eMMC/NAND
need to be erase first
before changing AYU2/L.
Chassis: RB2G, HE-L 29
2.2-1 - LED BLINKING: 3X DC ALERT & COMMUNICATION ERROR
RB2G CHASSIS
W700B/ W800B
Troubleshooting
TUNER
3-time blinking
2-2-1. 3x (DC Alert & Communication Error)
Note: For location details, refer to troubleshooting Reference for parts location.
2-2
.
Led Blinking
AUDIO
I2C bus dumping or
AYU2 / AYU2L
NG
Check D+1.0V at
JL9003 / JL9127 on
F9105,IC9103,
*
DC_ALERT
NG
DMD_TU_I2C
or I2CB bus check:
Probe CL2101, CL2102 /
CL2318, CL2101 on
TU* Board
Speaker
Check
Speaker Impedance
at SP Connector
NG
OK
Brownie
the B* B
oar
d
Etc
(B Board)
OK
SPIC check
OK
SPI dumping
resistor
Check
Audio +12.5V
at pin 18/20 of CN9101
on the B* Board
(except Adapter model)
G* Board
NG
OK
Check
+3.3V_MAIN_1
at JL9117 on
the B* Board
F9104,IC9104,
etc (B* Board)
NG
Probe RB8522 /
RB8517
or
AYU2 /
AYU2L
Check
+12.5V / +19.5V
at Power Amp side
F4401 / F4601,
IC4901 / IC4601
,etc
OK
NG
I2C_CCP check
R8502 and R8506 /
R8546 and R8547
I2C_CCP
Pull Up
OK
Check
+1.8V_MAIN on
Pin 2 of IC9201
IC9201,etc
(B* Board)
NG
of F4401 / F4601 on
the B* Board
(B* Board)
IC4901 / IC4601,etc
(B* Board)
OK
#2
I2CA bus check:
Probe CL5023,
I2CA bus
dum
ping
NG
HDMI
OK
NG
Check
+5.0V_MAIN
OK
IC9102 / IC9101
#3
CL5024
pg
resistor
or AYU2
OK
at
JL9113 / JL9112
on
the B* Board
,etc (B* Board)
Chassis: RB2G, HE-L
Chassis: RB2G, HE-L 30
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