Sony BRAVIA XBR-55X900H User manual

SERVICEMANUAL(COMMON)
GN6UR CHASSIS
Segment: NX/NXB
9-888-784-02
LCD TV
Sony EMCS (M) Sdn. Bhd., SVPM
© 2020.06
(See next page for revision )
ORIGINAL MANUAL ISSUE DATE: 2020.03
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:
[e-mail]
(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.
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Version Date Subject
1 2020.03 1st Issue
2 2020.06 Add software update info ( pg. 95)
REVISION HISTORY
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THIS SERVICE MANUAL CONTAINS COMMONINFORMATION FOR BELOW REGIONS AND MODELS:
REGION
AMERICA
CHINA ASIA EUROPE JAPAN
MODEL LISTS
MODEL
XBR-55X900H XBR-65X900H XBR-75X900H XBR-85X900H
KD-55X9000H KD-65X9000H KD-75X9000H KD-85X9000H
KD-55XH9005 KM-65X9000H KD-75XH9005 KM-85X9000H
KM-55X9000H KD-65XH9005 KM-75X9000H KD-85XH9096
FW-55BZ40H FW-65BZ40H FW-75BZ40H FW-85BZ40H
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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
Title
Page
SECTION
1 : SAFETY NOTES 5
SECTION
2 : SELF DIAGNOSTIC FUNCTION 13
SECTION
3 : TROUBLE SHOOTING 17
SECTION
4 : SERVICE ADJUSMENT 83
SECTION
5 : DIAGRAMS 97
SECTION
6 : PANEL HANDLING 102
TABLE OF CONTENTS
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1-1. Warningsand Caution
1)CAUTION :These servicing instructions are for use by qualified
service personnel only.
2)To reduce the risk of electric shock, do notperformany 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 avoidpossible 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.
(*Except AC ADAPTOR, Because it doesnot carry out replacing an
internal fuse.)
4) CARRYING THE TV : Be sure to follow these guidelines to protect
your propertyand 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 improper operation 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.
SECTION 1
SAFETY NOTE S
SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 5
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 find
outhow to set the modelnumberand serialnumber in service mode.
1-2-1. 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 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 an extended period 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 circuitat650Vrms)
7) Always clean the LCDpanel with a softcloth material.
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).
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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
SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 6
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 frameedge 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 temperaturesor in areas of high humidity
for an extendedperiod of time.
*Do not expose the panel to direct sunlight.
*Avoid contact with water. It may cause a short circuit within the module.
*Disconnect the AC 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.
*Protectthe panel fromESD to avoiddamaging the electronic circuit.
*Do not recommendpower-on in the conditions which laid face down the
panel, in repair activity. Refer Figure 1.
*Whentransportingby hand, do notput stresson the panel and the frame
around the screen.
Refer to the panel handling chapter of each Service manual,
or the "Transporting"informationof the ReferenceGuide 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 propertyof the OLED screenand is nota
malfunction.
•Do notpush or scratch the frontfilter,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 nota
malfunction.
3) Precautionsto Protect the Screenfrom Damage
Image retention
OLED TV’s are susceptible to image retention (burn-in)due to the
characteristicsof the materials used. Image retentionmay occur if images are
displayed in the same location on the screen repeatedly or over extended
periods of time. This is not a malfunctionof the TV. Avoid displaying 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 andbottomand/or the left and right
sides of the screen. (forexample, Letterboxed, 4:3 screen, Standard definition)
•Static images such as photos.
•Video games that might have static contentin some part of the screen.
•On-screen menus, program guides, channel logos etc.
•Static content fromapplications.
•On-screentickers, such as those used for news and headlines.
SECTION 1
SAFETY NOTE S
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SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 7
To reduce the risk of image retention:
•Fill the screen by changing [Widemode] to eliminate the black bars.
Select [Wide mode] other than [Normal].
•Turn off the OSD (On ScreenDisplay) by pressing the DISPLAY button,
and turn offthe menus fromconnected equipment. Fordetails, referto
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 settingsbased on the ambient conditions. The Standard
Picture is recommendedfor home use and when viewing content that
oftendisplays the station logos, etc.
The TV has following featuresto help reduce/ prevent image retention.
Press the HOME button, then select [Settings] –[Picture& Display] –
[Expert panel settings]–the desired option.
Other feature
The screen brightness is automatically reduced when displaying still
images, clocks, bright colours or logos etc.
IMPORTANT REMINDER FOR OLED PANEL REPLACEMENT
When carryingout OLEDpanel replacement,it is mandatory of a
service centerto confirmand record Panel ON time & Panel
Refresh times.
It is because they are indispensableinformationin order to clarify
responsibility for image retention afterpanel replacement.
Please referto the chapter of SELF DIAGNOSIS FUNCTION in this
service manual to find outhow to confirmthe Panel ON time &
Panel Refreshtimes in service mode.
Panel refresh
Panel refresh will automatically run to adjust the uniformityof the TV
screen afterit hasbeen in use for long periods of time.
Panel refreshcan also be performedmanually and should only be used if
image retention is very noticeable or you see the following message:
[Panel refreshdid not finish...]
Caution:
•The Panel refreshfunction may affect the panel. As a reference,perform
the Panel refreshonlyonce a year, do notperformit more thanonce a
year as it may affectthe 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 temperatureis between 10
ºC and 40 ºC.
Pixelshift
Automatically moves the image on the screen to prevent image retention.
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
※Substrate that needs attention for handling
・Main Board（B** - Board）
・Backend Board（D** - Board）
SECTION 1
SAFETY NOTE S
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SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 8
ESD wrist-strap
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)
ESD cushion/sheet
Please use a bag containing the board or a special seat
※Things to prepare in advance 1) Caution for Board handling(Stress)
Be sure to observe the following contents.
③Handle with care. Do not swing.
①Hold the board with both hands
②Do not hold/push Heat-Sink
SECTION 1
SAFETY NOTE S
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SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 9
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..
2) Caution for Board handling(ESD)
Be sure to observe the following contents.
①When take off Rear-Cover,
do not touch to board ②Use ESD wrist-strap
SECTION 1
SAFETY NOTE S
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SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 10
※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
SECTION 1
SAFETY NOTE S
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SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 11
1-4. Caution About the Lithium Battery
1) Danger of explosion if batteryis incorrectly replaced. Replace only
with the same or equivalent type.
2) Outer case brokenbatteryshouldnot contact to water.
1-5. Safety Check-Out
Aftercorrectingthe original service problem, performthe following
safetychecks beforereleasing 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 inter board wiring to ensure that no wires are pinched or
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 8921A etc *1)
*1 Not use FLUKE 8920A that connected to protective earth by diode
# Leakage current of measurement instrument is less than 10μArms
when under test equipment AC 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 terminal A 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 measurementmust not exceed AC 350uA peak).
Note: including AC adaptor,AC adaptor/DC operated unit
combination
Figure 2 –Measuring network
for LeakageCurrent
SECTION 1
SAFETY NOTE S
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SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 12
1-8. Lead Free Information
The circuitboards used in these modelshave been processed using
Lead Free Solder. The boards are identified by the LF logo located
close to the board designation.
Figure 4: LF Logo Figure 5: LF logo on circuit board
1-7. Howto Find a GoodEarth Ground
1)A cold-water pipe is a guaranteedearth ground; the cover-plate
retaining screw on most AC outletboxes is also at earth ground.
2)If the retaining screw is to be used as yourearth ground, verify that it is
at ground by measuring the resistancebetween 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 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).
Figure 3. Checking for earth
ground.
The servicing of these boards requires special precautions.It is
stronglyrecommendedto use Lead Free Solder material in order to
guaranteeoptimal quality of new solder joints.
SECTION 1
SAFETY NOTE S
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SECTION 2
SELF DIAGN OSTIC FUNCTION
SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 13
The units in this manual contain a self-diagnosticfunction.If an error occurs, the Smart Core Red LED will automaticallybegin to flash. The number of
times the LED flashes translates to a probable source of the problem.
Adefinitionof the Smart Core Red LED flash indicators is listed in the instruction manual for 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.
DIAGNOSTICTEST 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 followingdiagnostic items are displayed on screen. If the
screen displays a “0”, no error has occurred .
Smart Core RED LED
blinking count NX/NXB
2x <B/G> Main 12V over voltage [MAIN_POWER]
3x <B/G> Main 5.0V failure [DC_ALERT]
<B/S/G> Audio amp. protection [AUD_ERR]
4x <P/LD/B/G> LED driver failure/LED voltage protection [LD_ERR]
<LD/P/B>Error detection of the I2C communication between the Main device and the LD
IC.[BCM_ERR]
5x <P/T/G/B> Panel ID EEPROM I2C No ACK
(Also panel power failure is a suspect) [P_ID_ERR]
6x <P/G/B> Backlight failure [BACKLIGHT_ERR]
7x <P/B> Over temperature protection [TEMP_ERR]
8x -
Blue italic: detect at startup sequence only.
<G>: Power supply board,
<B>: Main board,
<T>: T-con board,
<LD>: LD board
<P>: Panel module,
<S>: Speaker
For China Models :
Please use FY19 remote (or older) to enter to Service Mode.
Self Diag.Quick Reference (LED blinking)
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SECTION 2
SELF DIAGN OSTIC FUNCTION
SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 14
Self Diagnosis Quick Reference (Not LED blinking [Record Only])
<B>: Main board, <T>: T-con board, <H>: LED, IR & sensor board
Error Item NX/NXB
TU_DEMOD -
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
EARC_ERR_I2C -
8KBE_COM_ERR -
8KSHV_ERR -
AMB_ERR_I2C -
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SECTION 2
SELF DIAGN OSTIC FUNCTION
SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 15
Self Diagnosis Service Menu
Entry (Self Diagnosis Display)
- Go to the standby by a remote.
- Push the buttons sequentially:
<Display> <5> <Vol-> <Power>.
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).
Self Diagnosis Display
SELF CHECK
002 MAIN POWER 050121081135 041231123456 031111182547 003
003 DC ALERT 000000000000 000000000000 000000000000 000
003 AUD ERR 000000000000 000000000000 000000000000 000
003 TU DEMOD 000000000000 000000000000 000000000000 000
003 AUD ERR I2C 000000000000 000000000000 000000000000 000
003 TU DEMOD I2C 000000000000 000000000000 000000000000 000
003 EARC ERR I2C 000000000000 000000000000 000000000000 000
004 LD ERR 000000000000 000000000000 000000000000 000
004 BCM ERR 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
008 4KBE ERR 000000000000 000000000000 000000000000 000
00034 00231 00034 [Home]Exit [Up/Down]Scroll
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
004 LD ERR 000000000000 000000000000 000000000000 000
004 BCM ERR 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
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SECTION 2
SELF DIAGN OSTIC FUNCTION
SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 16
Retry Limitation by Remote/Power Key
Smart Core
Red LED blinking
count
Error Name Retry Permission Times *1 Note
2x MAIN_POWER STDWN_RTRY_LIMIT_MAINPOWR = 1
3x
DC_ALERT (5V) STDWN_RTRY_LIMIT = 2
AUD_ERR STDWN_RTRY_LIMIT = 2
4x
LD_ERR STDWN_RTRY_LIMIT = 2
BCM_ERR STDWN_RTRY_LIMIT = 2
5x P_ID_ERR STDWN_RTRY_LIMIT = 2
6x BACKLIGHT STDWN_RTRY_LIMIT = 2
7x TEMP_ERR STDWN_RTRY_LIMIT = 2
8x 4KBE_ERR STDWN_RTRY_LIMIT = 2
Number of off/on action during the error
shutdown is recorded to
STDWN_OFFON_CNT.
*1) If STDWN_OFFON_CNT <= STDWN_RTRY_LIMIT, and STDWN_OFFON_CNT_MAIN_POWER <= STDWN_RTRY_LIMIT_MAINPOWR, you can turn the set on by
a remote/power key. At this time, if the error occurs again, the STDWN_OFFON_CNT is incremented by 1.
*2) When the main micon operates normally for STDWN_OFFON_CLR = 60 minutes, STDWN_OFFON_CNT and STDWN_OFFON_CNT_MAIN_POWER are cleared.
Number of off/on action for MAIN_POWER
shutdown is recorded to
STDWN_OFFON_CNT_MAIN_POWER.
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SECTION 3
TROU BLE SHOOTIN G
SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 17
Sony KD
-* Technical Triage Summary Sheet
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
CHASSIS: NX/NXB
LAST UPDATED: 2020/1/30
Triage Chart
No
Power Remote Network Audio Smart Core Bluetooth (BT)
2 3 4 5 6 7 8
TU_
DEM
OD
TU_
DEM
OD_I
2C
TCO
N_ER
R
FRCT
C_I2
C
AUD
_ERR
_I2C
4KP
Q_E
RR_I
2C
TEM
P_ER
R_I2
C
EARC
_ERR
_I2C
AMB
_ERR
_I2C
No White Power
LED & does not
reponse to remote
(Dead Set)
Stationa
ry
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
B* Board pl■ ■ ■ l l pl▲p p l l l p p lp p
G* Board lp■ ■ ■ l▲p
H* Board ●pl l
Speaker pl
Wifi & BT Module l l
LD* Board ▲▲p
V By One FFC p p p p
Tcon l l p■
LCD Panel ●▲l▲■l■
Power Power Panel
Panel
(Communication)
Panel
(Backlight)
TEMP 4KBE
Audio LD Tc on
Reference
Symptoms - Shutdown. Power LED
blinking red diagnostics sequences
Video
- missing or distorted
Problem
Symptoms - no shutdown
Error log record only
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SECTION 3
TROU BLE SHOOTIN G
SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 18
1.0 No power
BM5/BM5S Board Model
No Power
Check STBY 3.3V
C1708
near CN1700 on
BM5/BM5S board
Harness
G* Board
Replace
Between G* Board to
BM5/BM5S Board
Harness
BM5/BM5S
Board
NG
OK
NG
OK
u-Com Failure
DDCON/LDO
Main Device Failure
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SECTION 3
TROU BLE SHOOTIN G
SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 19
1.2 No Power u-com Failure
BM5 Board LCD Model P-on u-com control signal path summary
#pin1 NRST
#pin15 JIG_RST
#pin19 RETRY_TRG
は、サービスのチェック手順に
出てこないので、非表示 GND
GND
P-on u-com
IC401
G-Board
DDC : 0.8V_M5_CORE (IC804)
DDCs : 5V_MAIN&5.0V_VBUS&5V_AUDIO (IC600),
3.3V_MAIN &3.3V_AUDIO(IC601), 1.0V_TU_P
(IC603),
1.8V_M5 (IC807), 1.0V_M5 (IC808),
0.8V_M5_CPU (IC810), 0.8V_M5_GPU (IC811)
LDOs : 5.0V_MAIN_H (IC400), 3.3V_MAIN_H (IC403)
FET SW : 3.3V_TU_P (Q602/Q603)
SOC Muffin 5 (IC1000)
P_ON_#1
PGOOD_1
P_ON_#2
OPWRSB
R457
#pin2
#pin14
#pin9
#pin12
#pin13
#pin10
#pin6
3.3V_STBY
POWER_ON
ORESETB
#pin7
BL_ON
DC_OFF_DET
#pin18 P_ON_HL FET SW : 12.7V_LNB (Q604/Q605)
SW IC : 3.3V_TU_P (Q609 –IC604)
USB VBUS SW (IC3803/IC3804)
#pin11
ADC port
#pin8
12.7V_AUDIO
R462
#pin16
ADC port
R444
X_BL_MUTE
#pin3
12.7V_MAIN R450
#pin20
R443
LD-Board
VDD
12V_MON
GND
TYPE_DET
MIC_PWR_ON
DC_MON
#pin17
GND
3.3V_STBY
R445 R446
SYSSET
2020/06/2706:31:32(GMT+09:00)

SECTION 3
TROU BLE SHOOTIN G
SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 20
1.2 No Power u-com Failure
BM5 Board LCD Model
START
yes
Check POWER_ON
CL419 or R470 Voltage.
Is the voltage >3.0V?
Try AC Off and On after few minutes.
If #pin10 keep Low, change IC401.
If #pin10 goes High few seconds and downs to Low,
Check 12.7V_MAIN Line (from G board).
no
yes
Check 12V_MON
R462 Voltage.
Is the voltage >2.6V?
Check 12.7V_MAIN Line
and 12.7V_AUDIO Line
(from G board).
no
yes
yes
Change IC401
no
Check DC_OFF_DET
CL414 or R465 Voltage.
Is the voltage >3.0V?
Check P_ON_#1
CL418 or
P-on u-com #pin12 (IC401)
is >3.0V?
Change IC401
no
Continue next page…
Check VDD
C442 Voltage.
Is the voltage >3.0V? Check 3.3V_STBY Line (C1708, CN1700 #9pin)
no
Check TYPE_DET
CL408 or R451 Voltage.
Is the voltage 2.6±0.2V?
no
yes
Check OPWRSB
CL411 or R460 Voltage.
Is the voltage 0V?
SOC
Muffin 5 problem
IC1000 # AP17 OPWRSB
no
yes
Check PGOOD_1
CL413 or R456 Voltage.
Is the voltage >3.0V?
1.3 No POWER - DDCON/LDO
Check 0.8V_M5_CORE
DDCON (IC804)
no
yes
Type Detection Circuit problem.
Check TYPE_DET Line (R445, R446).
SYSSET
2020/06/2706:31:32(GMT+09:00)