Sony FW-32BU30J User manual

SERVICE MANUAL (COMMON)
ORIGINAL MANUAL ISSUE DATE: 2021.02 GR1VH CHASSIS
Segment : APH / APHB
9-888-789-02
LCD TV
Conditions of Use:
(1) Please use this information only for the purpose of performing repair, maintenance and/or configuration services of the Sony products (hereinafter
the “Repair services”) under the service agreement entered into with the Sony group company (hereinafter the “Service agreement”). Using this
information for any purpose other than the purpose described foregoing is forbidden.
(2) Only the Authorized Servicer’s officers, employees or subcontractors (including their officers and employees) whose duties justify a need-to-know
and who have agreed to hold confidential this information (collectively hereinafter the ”Permitted users”) are permitted to access and use this
information. To disclose or disseminate to any person other than the Permitted users is forbidden.
(3) Destroy or erase any and all portion of this information promptly in an irrecoverable and secure fashion after achieving the purpose described in
Section (1) above.
(4) Do not copy, replicate, reproduce, alter, translate, transmit, sell, lease, or distribute this information in whole or in part without the prior written
permission of the author.
(Notwithstanding foregoing, it is permitted to copy and distribute this information to the Permitted users.)
(5) Please notify immediately any leakage, loss, theft, misappropriation, or other misuse of this information by e-mail to the following address:
somk-gc[email protected]
(6) In addition to the above, the terms and conditions of the Service agreement shall be applied to using this information.
Revision of Information:
This information may be changed or updated at any time without any prior notice. Please confirm that this information is up-to-date before using it.Sony EMCS (M) Sdn. Bhd., HES-M
©2021.06
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Version Date
Su
bject
1 2021.02
1
st Issue
2 2021.06
1. Add APHB models
(pg. 3)
2. Add Block Diagram for
APHB 32” (pg. 105)
3. Add Connecting Diagram for
APHB 32" (pg. 106)
4. Add Handling Guide for
APHB 32" (pg. 119-120)
RE VISION H IS TORY
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THIS SERVICE MANUAL CONTAINS COMMONINFORMATION FOR BELOW REGIONS AND MODELS:
REGION
AMERICA ASIA CHINA
MODE L LI STS
MODEL
FW-32BU30J
FW
-43BU30J
FW
-50BU30J
FW
-55BU30J
FW
-65BU30J
FW
-75BU30J
FW-32BZ30J
FW
-43BZ30J
FW
-50BZ30J
FW
-55BZ30J
FW
-65BZ30J
FW
-75BZ30J
KD
-43X80J
KD
-50X80J
KD
-55X80J
KD
-65X80J
KD
-75X80J
KD
-43X81J
KD
-50X81J
KD
-55X80CJ
KD
-65X80CJ
KD
-75X80CJ
KM
-43X80J
KM
-50X80J
KD
-55X79J
KD
-65X79J
KD
-75X79J
KD
-55X81J
KD
-65X81J
KD
-75X80BJ
KD
-55X80AJ
KD
-65X80AJ
KM
-55X80J
KM
-65X80J
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Title Page
SAFETY
NOTES 5
SELF DIAGNOSTIC FUNCTION
13
TROUBLESHOOTING
17
SERVICE ADJUSMENT
90
DIAGRAMS
104
HANDLING GUIDE
112
Note: Pictures provided in this manual may have difference from actual sets.
Please refer Service Manual –Unique for below information :
▪Disassembly and Removal Caution
▪Wire Dressing
▪Circuit Board Location
▪Exploded Views and Part Lists
TABLE OF CONTENTS
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5
1-1. Warningsand Caution
1) CAUTION :These servicing instructions are for use by qualified service
personnelonly.
2) To reduce the risk of electric shock, do notperform any servicing other than that
contained in the operatinginstructions unless you are qualified to do so.
3) WARNING!! : An isolation transformer should be used duringany service to avoid
possible shock hazard, because of live chassis. The chassis of this receiver is
directly connected to the ac power line.
The replaceable fuse could be in the neutral of the mains supply. When replacing the
fuse, the mains shall be disconnected for de-energize the phase conductors.
(*ExceptAC ADAPTOR, Because it doesnot carry out replacing an internal fuse.)
4) CARRYING THE TV : Be sure to follow these guidelines to protect your property
and avoid causing serious injury :
•Carry the TV with an 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 avoiddamages.
5) SAFETY-RELATED COMPONENT WARNING!! : 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 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 improperoperation is
suspected.
6) IMPORTANT REMINDER FOR TV MAINBOARD REPLACEMENT :
It is mandatory for service centers to confirm the TV‘s system information after each
repair carriedout with Mainboard replacement.
Whenever a TV Main board is replaced, the correct TV ModelandSerial number must be
reinserted into memory.
This is a MANDATORY procedurethateach service center mustapply.
Please refer to the chapter of ADJUSTMENT in this service manual to findouthow to set the
modelnumberand serialnumber in service mode.
1-2-1. Caution Handling of LCD Panel
When repairing the LCD Panel, makesure you are grounded with a wrist band.
When repairing the LCD Panel on the wall, the panel must be secured using the 4 mounting
holes on the rear cover.
1) Do not press the panel or frameedge 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 an
extendedperiod of time.
4) Do not expose the LCDpanel to direct sunlight.
5) Avoid contact with water. It may cause 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 LCDpanel 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 circuit.
9) Protectthe panel fromESD to avoid damaging the electronic circuit (C-MOS).
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
SAFETY NOTES
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10)During the repair, DO NOT leave the Power On or Burn-in period for more than 1
hour while the TV is face down on a cloth. Refer Figure 1
1-2-2. Caution for OLED Panel
1) Handling
When repairing the TV set, be sure you are grounded by using a wrist band.
*Do not press on the panel or frame edge to avoid the risk of electric shock.
*Do not scratch or press on the panel with any sharp objects.
*Do not leave the module in high temperatures or in areas of high humidity for an
extended period of time.
*Do not expose the panel to direct sunlight.
*Avoid contact with water. It may cause a short circuit within the module.
*Disconnect theAC power when replacing.
*Always clean the panel with a soft cloth material.
*Use care when handling the wires or connectors.Damaging the wires may cause a
short.
*Protect the panel from ESD to avoiddamaging the electronic circuit.
*Do not recommendpower-on in the conditions which laid face down the panel, in
repair activity. Refer Figure 1.
*When transporting by hand, do notput stress on the paneland the frame around the
screen
Figure 1.
Refer to the panel handling chapter of each Service manual,
or the "Transporting" information of the Reference Guide of each model for how to hold
it.
2) OLEDScreen
•Although the OLED screen is made with high-precision technology and 99.99% or
more of the pixels are effective, black dots may appear or bright points of light (white,
red, blue, or green) may appear constantly on the OLED screen. This is a structural
property of the OLED screenand is not a malfunction.
•Do notpush or scratch the front filter, or place objects on top of this TV set. The
image may be uneven or the OLED screen may be damaged.
•The screenand cabinet get warm when this TV set is in use. This is not a malfunction.
3) Precautionsto Protect the Screenfrom Damage
Image retention
OLED TV’s are susceptible to image retention (burn-in)due to the characteristics of the
materials used. Image retention may occur if images are displayed in the same location
on the screen repeatedly or over extendedperiods of time. Thisisnot a malfunction of
the TV.Avoiddisplaying images that may cause image retention.
The following are examples of images that may cause image retention:
•Content with black bars either on the top andbottom and/or the left and right sides of
the screen. (for example, Letterboxed, 4:3 screen, Standard definition)
•Static images such as photos.
•Video games that might have static content in some part of the screen.
•On-screen menus, program guides, channel logos etc.
•Static content from applications.
•On-screen tickers, such as those used for news and headlines.
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
SAFETY NOTES
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To reduce the risk of image retention:
•Fill the screen by changing [Wide mode] to eliminate the black bars. Select [Wide
mode] other than [Normal].
•Turn off the OSD (On ScreenDisplay) by pressing the DISPLAY button, and turn off
the menus from connected equipment. Fordetails, refer to the instruction manuals for
the connected equipment.
•Avoid displaying static images with bright colours (including white), clocks or logos
on anyportion of the screen.
•Set the picture settings based on the ambient conditions. The Standard Picture is
recommended for home use and when viewing content that often displays the station
logos, etc.
The TV has following features to help reduce/ prevent image retention. Press the
HOME button, then select [Settings] –[Picture &Display] –[Expert panel settings] –
the desired option.
Panel refresh
Panel refresh will automatically run to adjust the uniformity of the TV screen after it
hasbeen in use for long periods of time.
Panel refresh can also be performed manually and shouldonly be used if image
retention is very noticeable or you see the following message: [Panel refresh didnot
finish...]
Caution:
•The Panel refresh function may affect the panel. As a reference, perform the Panel
refresh onlyonce a year, do notperform it more thanonce a year as it may affect the
usable life of the panel.
•Panel refresh takes aboutonehour to complete.
•A white line may be displayed on the screenduring the Panel refresh, this is not a
malfunction of the TV.
•Panel refresh will only work when the room temperature is between10
ºC and 40 ºC.
Pixelshift
Automatically moves the image on the screen to prevent image retention.
Other feature
The screen brightness is automatically reduced whendisplaying still images, clocks,
bright colours or logos etc.
1-3. Caution_for_Board_handling
Symptom : The following problems will occur due to handling of the IC mounted on
the board
・Solder crack due to substrate handling (stress)
・IC breakdown due to static electricity (ESD)
When repairing the TV at the customer‘s home or service station or Repair of defect
board, please pay attention to the handling of the board
IMPORTANT REMINDER FOR OLED PANEL REPLACEMENT
When carryingout OLEDpanel replacement,it is mandatory of a service center to confirm
and record Panel ON time & Panel Refresh times.
It is because they are indispensableinformationin order to clarify responsibility forimage
retention after panel replacement.
Please referto the chapter of SELF DIAGNOSIS FUNCTION in this service manual to find out
how to confirmthe Panel ON time & Panel Refresh times in service mode.
※Substrate that needs attention for handling
・Main Board（B** - Board）
・Backend Board（D** - Board）
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
SAFETY NOTES
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※Things to prepare in advance 1) Caution for Board handling(Stress)
Be sure to observe the following contents
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
ESD wrist-strap
ESD cushion/sheet
Please use a bag containing the board or a special seat
ESD wrist-strap to be checked daily.
Use Multi-meter to make sure resistance of ESD wrist-strap is OK.
(R=750K Ohms to 35Mega Ohms)
③Handle with care. Do not swing.
①Hold the board with both hands
②Do not hold/push Heat-Sink
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1) Caution for Board handling(Stress)
Be sure to observe the following contents
2) Caution for Board handling(ESD)
Be sure to observe the following contents.
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
④Regardless of Good board or Defective board, always put it
on ESD cushion/sheet slowly.
⑤Do not stack up
⑥Keep vertical position and put in/take out from Box.
Always put in to ESD bag then place into Box/Container Box.
⑦Do not hold Heat-Sink when take out or install it..
①When take off Rear-Cover,
do not touch to board ②Use ESD wrist-strap
SAFETY NOTES
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SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
※Installation example of wrist-strap
Please connect the clip to the metal part of the chassis of the TV with the wristband
grounded. Below is a grounding example of each model.
＜K*-55/65A9F＞
＜K*-65Z9F＞
※Caution
ESD wrist-strap to be checked daily.
Use Multi-meter to make sure resistance of ESD wrist-strap
is OK.(R=750K Ohms to 35Mega Ohms)
1
0
③When holding board, do not hit/touch to Plastic part(s)
④After take defective board out from TV, put it into ESD bag.
Do not place on floor mat/carpet direct. And, always put it on
ESD cushion
SAFETY NOTES
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1-4. Caution About the Lithium Battery
1) Danger of explosion if battery is incorrectly replaced. Replace only with the same or
equivalent type.
1)Outer case broken battery shouldnot contact to water.
1-5. Safety Check-Out
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 splashesand bridges.
2)Check the inter board wiring to ensure that no wires are pinchedor contact high-
wattage resistors.
3)Check all control knobs, shields, covers, ground strapsand mounting 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
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, 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 prohibited.
1-6. Leakage Test
(To protect electric shock when customer touch the terminal.)
Leakage current can be measured by V: Voltmeter or oscilloscope (r.m.s. or peak
reading)
Stabilized power supply instrument and isolated voltage transformer:
Use too much current capacity and isolated voltage transformer does not need to use
stabilized power supply equipment.
Specification of RMS volt meter: Input resistance > 1 Mohm, Input capacitance < 200
pF, Frequency range: 15 Hz –1MHz . Refer Figure 2. Isolated type volt -meter (FLUKE
8921Aetc *1)
*1 Not use FLUKE 8920Athat connected to protective earth by diode
# Leakage current of measurement instrument is less than 10μArms when under test
equipmentAC plug is opened
# Set up the following condition and turn on the set.Applied voltage: Nominal input
voltage (Description on Nameplate)
# Measure the leakage current between one phase conductor and neutral for terminalA
and terminal B.
Read rms value, and then calculate to peak value PEAK VALUE =√2 RMS VALUE
Comply with the following requirement
Class II equipment (2-pin plug): for each terminal, the worst value of measurement
must not exceedAC 350uA peak).
Note: includingAC adaptor, AC adaptor/DC operated unit combination
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
Figure 2 –Measuring
network for Leakage
Current
SAFETY NOTES
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1-7. Howto Find a GoodEarth Ground
1)A cold-water pipe is a guaranteedearth ground; the cover-plate retaining
2)screw on mostAC outletboxes is also at earth ground.
3)If the retaining screw is to be used as yourearth 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.
4)If a cold-water pipe is not accessible, connect a60- to 100-watt trouble- light (not a
neonlamp) between the hot side 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 3).
The servicing of these boards requires special precautions. It is strongly recommended
to use Lead Free Solder material in order to guarantee optimal quality of new solder
joints.
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
Figure 3. Checking for earth ground. Figure 4: LF Logo Figure 5: LF logo on circuit board
1-8. Lead Free Information
The circuitboards 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.
SAFETY NOTES
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The units in this manual contain a self-diagnostic function. If an error occurs, the Smart Core Red LED will automaticallybegin to flash. The number of times the LED flashes
translates to a probablesource of the problem.
Adefinition of the Smart Core Red LED flash indicators is listed in the instruction manualfor the user’s knowledge and reference.
If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often
these problems occur.
DIAGNOSTIC TEST INDICATORS
Whenan error occurs, the Smart Core Red LED will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED
will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, no error has
occurred .
Self Diag.Quick Reference (LED blinking)
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
Smart Core RED
LED blinking count Error Item APH APHB
2x MAIN_POWER <B/G> Main 12V over voltage
3x DC_ALERT <B/G> Main 5.0V failure
AUD_ERR <B/S> Audio amp. protection <B/S/G> Audio amp. protection [AUD_ERR]
4x LD_ERR - -
BCM_ERR --
5x P_ID_ERR <B/T/P/G> Panel ID EEPROM I2C No ACK (Also panel power failure is a
suspect)
<P/T/G/B> Panel ID EEPROM I2C No ACK
(Also, panel power failure is a suspect)
[P_ID_ERR]
6x BACKLIGHT_ERR <B/G/P/LD> Backlight failure <P/G/B> Backlight failure [BACKLIGHT_ERR]
7x TEMP_ERR <B/H/P> Over temperature protection <P/B> Over temperature protection [TEMP_ERR]
8x 4KBE_ERR - -
Blue italic: detect at startup sequence only.
<G>: Power Supply board, <B>: Main board, <T>: T-con board,
<LD>: LD board, <Tu>: Tuner board, <A>: Power Adapter,
<P>: Panel module, <S>: Speaker, <H>: H-board
SELF DIAGNOST IC FUNCTION
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Self Diag.Quick Reference (Not LED blinking [Record Only])
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
Blue italic: detect at startup sequence only.
<G>: Power Supply board, <B>: Main board, <T>: T-con board,
<LD>: LD board, <Tu>: Tuner board, <A>: Power Adapter,
<P>: Panel module, <S>: Speaker, <H>: H-board
SELF DIAGNOST IC FUNCTION
Error Item APH APHB
TCON ERR <T> T-CON device I2C
communication failure -
AUD_ERR_I2C <B> Audio amp I2C communication failure
TEMP_ERR_I2C <B/H> Temp sensor I2C communication failure
TU_DEMOD_I2C <B> Tuner & Demodulator
I2C communication failure -
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Self Diag. Service Menu
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
Exit
- If you want to finish service mode app, do AC OFF/ON.
→*Service mode app is disable perfectly.
- If you want to move home menu, push <HOME> button.
→*Service mode app do background (not disable perfectly).
Entry (Self Diagnosis Display)
- Go to the standby by a remote.
- Push the buttons sequentially:
<Display> <5> <Vol-> <Power>.
Self Diagnosis Display
FY21 model (APH / APHB)
002 MAIN POWER 050121081135 041231123456 031111182547 003
003 DC ALERT 000000000000 000000000000 000000000000 000
003 AUD ERR 000000000000 000000000000 000000000000 000
003 AUD ERR I2C 000000000000 000000000000 000000000000 000
003 TU DEMOD I2C 000000000000 000000000000 000000000000 000
005 TCON ERR 000000000000 000000000000 000000000000 000
005 P ID ERR 000000000000 000000000000 000000000000 000
006 BACKLIGHT ERR 000000000000 000000000000 000000000000 000
007 TEMP ERR 000000000000 000000000000 000000000000 000
007 TEMP ERR I2C 000000000000 000000000000 000000000000 000
SELF CHECK
00034 00231 00034
Back
[Home]Exit [Up/Down]Scroll
SELF DIAGNOST IC FUNCTION
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Self Diag. Display
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
Format of error timestamps
YYMMDDhhmmss (in UTC)
Example:
120823132523 ->Aug 23 2012 13:25:23 UTC
* Only when time is set, an error timestamp is saved.
Panel Operation Time clear
<7> -> <0>
Timestamps and Error Count clear
<8> -> <0>
Total Operation Time and Boot Count clear
<9> -> <0>
•Panel Operation Time is recorded every
30 min, but Total Operation Time is recorded every 1 hr.
Therefore, the panel op. time might become larger than
the total op. time.
FY21 model (APH / APHB)
002 MAIN POWER 050121081135 041231123456 031111182547 003
003 DC ALERT 000000000000 000000000000 000000000000 000
003 AUD ERR 000000000000 000000000000 000000000000 000
003 AUD ERR I2C 000000000000 000000000000 000000000000 000
003 TU DEMOD I2C 000000000000 000000000000 000000000000 000
005 TCON ERR 000000000000 000000000000 000000000000 000
005 P ID ERR 000000000000 000000000000 000000000000 000
006 BACKLIGHT ERR 000000000000 000000000000 000000000000 000
007 TEMP ERR 000000000000 000000000000 000000000000 000
007 TEMP ERR I2C 000000000000 000000000000 000000000000 000
SELF CHECK
00034 00231 00034
Back
[Home]Exit [Up/Down]Scroll
Smart Core Red LED
blinking count
Error Item Error count
Total Operation Time [hr] –Boot Count –Panel Operation Time [hr]
Error
timestamp for
last recorded
error
Error
timestamp for
second last
recorded error
Error
timestamp for
3rd last
recorded error
SELF DIAGNOST IC FUNCTION
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Triage Chart
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
Before you make the service call…
1. Confirm the symptom from the customer.
2. Select that symptom from the chart.
3. Bring all the boards and cables listed for that symptom.
4. Follow the troubleshooting charts in the technical guides to isolate the board.
5. Chart Color Code
RED DOT: Most likely defective part
BLUE TRIANGLE: Secondary possible defective part
GREEN SQUARE: Tertiary possible defective part
BLACK TEXT: Board that may correct the symptom
Reference
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
Symptoms - no shutdown
Error log record only
No
Power
Video
- missing or distorted Remote Network Audio Smart Core Bluetooth (BT)
2 3 4 5 6 7 8
TU_DE
MOD
TU_DE
MOD_
I2C
TCON_
ERR
FRCTC
_I2C
AUD_E
RR_I2
C
4KPQ_
ERR_I
2C
TEMP_
ERR_I
2C
EARC_
ERR_I
2C
AMB_ERR_I2C
No White Power
LED & does not
reponse to remote
(Dead Set)
Stationary
colored lines
or dots
No video
One of
Inputs
NO RF input
No video all
Inputs
No Remote
Cannot connect to
Wireless Network No Audio
Smart Core no LED (Set
is still alive)
Bluetooth / One Step
Remote (OSR) can't
connect
Main Board pl■ ■ l l pl▲p p l l l p p lp p
Power Board lp■ ■ l▲p
Receiver Board ●pl l
Speaker pl
Wifi & BT Module l l
LD Board lp■l■lp p
V By One FFC p p p p
Tcon l l p■
LCD Panel ▲l▲■l■
Problem
Power
Power
Panel
Panel
(Communication)
Panel
(Backlight) TEMP 4KBE
Audio
LD Tcon
TR OUBLESHOOTI NG
SEGM ENT : APH
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Triage Chart
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
Before you make the service call…
1. Confirm the symptom from the customer.
2. Select that symptom from the chart.
3. Bring all the boards and cables listed for that symptom.
4. Follow the troubleshooting charts in the technical guides to isolate the board.
5. Chart Color Code
TR OUBLESHOOTI NG
SEGM ENT : APHB
Reference
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences Symptoms - no shutdown Error log record only
2 3 4 5 6 7 8
TU_DEM
OD
TU_DEMO
D_I2C
TCON_E
RR
FRCTC_I
2C
AUD_ERR
_I2C
4KPQ_E
RR_I2C
TEMP_ER
R_I2C
EARC_E
RR_I2C
8KBE_C
OM_ER
R
AMB_ER
R_I2C
Main Board ▲● ● ■● ● ▲
G*(LD*) Board ●▲ ▲ ▲
Receiver Board ●
Speaker ▲
Wi-fi & BT Module
LD* Board ▲
V By One FFC
T-con
LCD Panel ●▲
Problem
Power
Power
Panel
Panel
(Communication) Panel (Backlight)
TEMP
4KBE
Audio
LD Tcon
RED DOT: Most likely defective part
BLUE TRIANGLE: Secondary possible defective part
GREEN SQUARE: Tertiary possible defective part
BLACK TEXT: Board that may correct the symptom
SYSSET
2021/06/2321:31:19(GMT+09:00)

19
Triage Chart
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
Before you make the service call…
1. Confirm the symptom from the customer.
2. Select that symptom from the chart.
3. Bring all the boards and cables listed for that symptom.
4. Follow the troubleshooting charts in the technical guides to isolate the board.
5. Chart Color Code
TR OUBLESHOOTI NG
SEGM ENT : APHB
RED DOT: Most likely defective part
BLUE TRIANGLE: Secondary possible defective part
GREEN SQUARE: Tertiary possible defective part
BLACK TEXT: Board that may correct the symptom
Reference
No
Power Video - missing or distorted Remote Network Audio Smart Core Bluetooth (BT)
No White Power LED
& does not response
to remote (Dead Set)
Stationary
colored lines or
dots
No video
One of
Inputs
NO RF
input No video all Inputs
No Remote
Cannot
connect to
Wireless
Network
No Audio
Smart Core no LED
(Set is still alive)
Bluetooth / One Step
Remote (OSR) can't
connect
Main Board ▲ ▲ ● ● ▲ ▲ ●▲ ▲
G*(LD*) Board ●▲▲
Receiver Board ▲● ●
Speaker ●
Wi-fi & BT Module ● ●
LD* Board ▲
V By One FFC ▲ ▲
T-con ▲■
LCD Panel ●■
SYSSET
2021/06/2321:31:19(GMT+09:00)

20
1.0 No Power - PSU
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING SERVICE ADJUSMENT DIAGRAMS HANDLING GUIE
BM5A Board Model
No Power
Check STBY 3.3V
C1708
near CN1701 on
BM5A board
Harness
G* Board
Replace
Between G* Board to
BM5A Board
Harness
BM5A
Board
NG
OK
NG
OK
u-Com Failure
DDCON/LDO
Main Device Failure
TR OUBLESHOOTI NG
SYSSET
2021/06/2321:31:19(GMT+09:00)