Page 1
Order No. ITD1803902GE
2018 - LCD TV / OLED TV
Model No. LCD-201803
OLED-201806
Circuit Operation and Troubleshoot
Ver. 2.0
1
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Revision History
Version Issued/Revised
date
Ver. 1.0 27th. Mar. 2018 First version
Ver. 2.0 11th. Jun. 2018 Add new models (except OLED)
Revised content
P.5, 11, 16, 19, 51: Add new models
P.20, 55-57, 76, 77: Add pages for new models
Add OLED models information
P.5, 11, 16, 19, 29, 38, 42, 49, 51, 70: Add OLED models
P.10, 20, 27, 28, 46, 47, 61-63, 68, 71, 78-87: Add pages for OLED models
2
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INDEXINDEX
1.Board Layout
2.Video Signal Processing
2-1. Picture signal flow
2-2. Troubleshoot of Picture Problem
3.Power Supply
3-1. Power Board Structure
3-2. Stand by / Start up Operation
3-3. SOS Protection Circuit and Troubleshoot of Power Problem
4.Handling and Rear Cover Disassemble and Assemble
5.Information for OLED Model
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1. Board Layout
4
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Board Layout -1
49/43/32/24FS***/F4**,
40FS***/F4** (Europe and Oceania)
G
K
The presence of GK board is depend on the model and region.
P
55/49/43/40FX6**
65/55/49/43/40FX7**/FX8**
55FZ**
A
K
50FS***
65FX6**, 75FX7**/FX8**
LDP
P
K
A
40FS***/F4** (Latin and Asia)
G
K
LDP
A
K
65FZ***
G
K
P
PB
A
K
5
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Board Layout -2
( A+P )
P3
P
AC input
A15
A10
( 32F400 )
A02
A
A12
Speaker Speaker
(T-CON)
Not repairable,
One of the panel module
Board Name Function
A-Board Main Board
P-Board Power supply, Backlight Drive, Power key, Control key
K-Board Remote Receiver, Power LED
K10
K
6
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Board Layout -3
( A+P )
GK
P
P3
P2
A16
A12
( 55FX700 )
A02
A
JK8705
A10
Bluetooth
Module
AC input
Speaker
WiFi Module
Board Name Function
A-Board Main Board
P-Board Power supply, Backlight Drive
Speaker
K10
(T-CON)
Not repairable,
One of the panel module
K
Board Name Function
K-Board Remote Receiver, Power LED
GK-Board Power key, Control key
7
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Board Layout -4
( A+LDP )
DC input,
Connect the
AC adapter
GK
LDP
P2
LDP1
( 40F400 )
A02
A
A11
A10
Speaker Speaker
(T-CON)
Not repairable,
One of the panel module
Board Name Function
A-Board Main Board
P-Board Power supply, Backlight Drive, Power key, Control key
K-Board Remote Receiver, LED
K10
K
8
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Board Layout -5
( A+P+LDP )
P
P2
AC input
LDP3
LDP5
LDP
LDP2
LDP4
A16
( 75FX750 )
A15
A
A02
JK8705
Speaker
K10
WiFi Module
Board Name Function
A-Board Main Board
P-Board Power supply for Signal Process
K
A12
A10
Not repairable,
One of the panel module
(T-CON)
Not repairable,
One of the panel module
Speaker
Bluetooth
Board Name Function
LDP-Board Power supply for Backlight Drive
K-Board Remote Receiver, Power LED
Module
9
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Board Layout -6
OLED
GK
(A+P+PB)
P5
AC input
P
P6
P2
CN11
CN5
PB6
PB
PB5
(T-CON)
Not repairable,
One of the panel module
( 65FZ series )
There is no PB board in 55FZ series
A15
PB4GK4
A16
A
A02
JK8705
CN10
CN6
A10
A12
WiFi Module
Board Name Function
A-Board Main Board
P-Board Power supply for Signal Process
PB-Board Power supply for Panel
(The Speaker of FZ1000 is separated.)
Bluetooth Module
Board Name Function
GK-Board Key
K-Board Remote Receiver, Power LED
K10
K
10
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Board Structure
F4** FS4**/5**/6** FX5**/6**
(4K)
24inch A+P A+P --- --- ---
32inch
40inch
43inch
49inch
A+P A+P --- --- ---
A+P
(Oceania)
A+LDP
+DC adaptor
(Asia/Latin)
A+P A+P A+P A+P ---
A+P A+P A+P A+P ---
A+P
(Europe/Oceania)
A+LDP
+DC adaptor
(Asia/Latin)
A+P A+P ---
FX7**/8**
(4K)
FZ***
(OLED)
50inch
55inch
65inch
75inch
--- A+P+LDP --- --- ---
--- --- A+P A+P A+P
--- --- A+P+LDP A+P A+P+PB
--- --- --- A+P+LDP ---
Except K, GK boards
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2. Signal Processing
2-1. Signal Flow
12
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Video/Audio Signal Process - 1
F4## series
USB1
OPT_out
A
IC4900
Audio AMP
Antenna
terminal
AV
Component
HDMI1/2
IC68**
De-Modulation
IC8000
(MT5561)
Resize
IP conv.
OSD
LVDS Data
to LCD Panel
The input terminals are different by the models or countries.
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Video/Audio Signal Process - 2
FS### series
WiFi
(*)Bluetooth
USB1/2
Antenna
terminal
AV
Component
TU690*
TUNER
IC68**
De-Modulation
(*)Headphone
OPT_out
IC8000
(Peaks LD11
or MT5581P)
Resize
IP conv.
OSD
A
IC3400 or 4900
Audio AMP
LVDS Data
LAN
CI-slot
(only Europe)
HDMI1/2/3
(*) The input terminals are different by the models or countries.
to LCD Panel
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Video/Audio Signal Process - 3
FX6## / FX700-740 series
WiFi
(*)Bluetooth
(Only FX700)
USB1
USB2
USB3
(Only FX700)
Antenna
terminal
Component
TU670*
TUNER
IC8701
(USB HUB)
(Only FX700)
IC68**
De-Modulation
(*)Headphone
OPT_out
IC8000
(MT5811Q)
Resize
IP conv.
OSD
A
IC3400
Audio AMP
to LCD Panel
( V by One format )
LAN
CI-slot
(only Europe)
HDMI1/2/3/
(*)HDMI4
(*) The input terminals are different by the models or countries.
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Video/Audio Signal Process - 4
FX750-800, FZ### series
WiFi
Bluetooth
USB2
USB1
USB3(3.0)
SD card
(only TX/TC
-FZ series
Antenna
terminal
TU670*
TUNER
IC8705
(USB HUB)
IC68**
De-Modulation
(*)Headphone
OPT_out
IC8000
(MT5811P)
Resize
IP conv.
OSD
IC3400 or
IC3800-04
Audio AMP
IC9000
(MFC19)
Frame Rate
Color space
Convert
A
to LCD Panel
( V by One format )
Component
LAN
CI-slot
(only Europe)
HDMI1/2/3/4
(*) The input terminals are different by the models or countries.
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2-2. Troubleshoot of Picture Problem
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Troubleshoot for Picture/Sound Problem
<TV Self Test> : Customers also can check the picture and sound by internal data.
If the picture and sound is no problem, the reason of trouble is mostly not a TV.
How to display :
Menu HELP TV Self Test
#)The test pattern and test sound are created by the main IC on the A board.
TV Self Test
(OK)
1) During this indication
“Self Check of Service Mode”
is working at the background.
*) F400/410 series do not support.
2) If NG, indication is shown.
# A board defective
3) If All OK, it shifts to picture
and sound test.
1.Antenna level low
2.Connection mistake
3.Input devices NG
4.Input select mistake
Yes
No
TV unit defective.
(A board, Panel or
Speaker)
A
IC8000
(Peaks/MTK )
Test
Pattern
Resize
IP conv.
LCD/OLED Panel
Module
T-CON
LCD Panel
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When abnormal picture is displayed, troubleshoot by the test pattern in LCD module.
Troubleshoot for Picture Problem
<LCD Panel Test Mode> :
If the picture is no problem, A board must be defective.
If the picture is also abnormal, LCD panel module must be defective. Just in
case, confirm the flat cable connection between A board and T-CON board.
How to enter :
While pressing "volume(-)" button of the TV unit,
press “Yellow" button of the remote control 3 times within 2 seconds.
How to exit :
Switch off the TV unit
#)The test pattern is created by the circuit in LCD Panel Module(T-CON board).
Abnormal
picture,
Bar/line/dot,
Unevenness,
Noise…
Ａ
Ａ
Ａ
v. line
h. line
many
lines
A
Check the “Panel Test
Mode”
Test pattern
OK
Replace A board (#1)
Test pattern
also NG
A
IC8000
(Peaks/MTK )
Resize
IP conv.
Confirm(Clean) the flat
cable connection
(between A board and T-CON
board of LCD Panel)
Flat cable
LCD/OLED Panel
T-CON
Test
Pattern
Some patterns are
automatically changed.
The patterns are depend
on the LCD panel.
Replace LCD Panel module
Module
LCD Panel
Ａ
Ａ
Dot or
mura
Color
abnormal
(#1) In case of below model, please copy the data from original to spare part of A board (refer next page)
Glass Bezel Design :TX-65/55FX74#/75#/78#, TH/TC-65/55FX800
OLED model : all FZ series
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Data Copy for A Board Replacement by USB Memory
When replacing A Board, the data in original A Board can be copied to USB Memory and then copy to new A board.
< Preparation > (Make pwd file as startup file in an empty USB Memory.)
1. Insert an empty USB Memory to your PC.
2. Right-click a blank area in a USB Memory window, point to New, and then click text document.
A new file is created by default (New Text Document.txt).
3. Right-click the new text document that you just created and select rename, and then change the name and extension of the file
to the “boardreplace.pwd” and press ENTER.
(Note) Please make only one file to prevent the operation error. No any other file should be in USB Memory.
Before replacing A Board After replacing A Board
< Data copy from TV(original A board) to USB Memory > < Data copy from USB Memory to TV(new A board) >
1. Turn on the TV.
2. Insert USB Memory with a startup file (pwd file) to USB terminal.
On-screen Display will be appeared according to the startup file
automatically.
3. Input Password
2770
4. Copying
(maximum few minutes)
5. Finish
1. Turn on the TV.
2. Insert USB Memory with Data to USB terminal.
On-screen Display will be appeared according to the Data folder
automatically.
3. Input Password
2771
4. Copying
(maximum few minutes)
5. Finish
6. Remove USB Memory from TV.
7. Turn off the TV.
Note: New folder “user_setup” will be created in USB Memory
Note: 1. Depending on the failure of boards, function does not work.
2. This function can be effective among the same model numbers.
6. Remove USB Memory from TV.
7. Turn off the TV.
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System Information
You can check some information in Help menu.
MENU Help System information
System Information
Software Version : 3003-10000-0200a0600019
Status1 : 0e 0201-0003 0000-0800
Status2 : 0028-123-0012c8 0035-034-651g
Status3 : 00-000000-F000
Status4 : A00025-0000033-00000
Status5 : 00000-10000 17d010ff
Status6 : 03166502-1000030
Status7 : 00000-0751
Status8 : 00014-00014-00001-00001
HDAVI Control : 5
Software version = 3003 – 10000 - 00200a060019
(Main – STBY – FRC )
ver. 3.003 , 1.000, 0.200a06, 0.0019
* FRC version is only for high grade models
Status1 : model ID
Status2 : 0028-123-0012c8 0035-034-651g
LSI (Package-Release-data ver), AQ (Package-Release-data ver)
Status3 : 00 = Bad block in NAND Flash
00 = Main SOC Reboot counter
00 = System crash counter
00 = Emergency(SOS) counter
F000 = NAND maker ID
Status4 : A = Power on period(A<=100hrs, B<=200hrs, C>200hrs)
00025 = Power on time (hours)
0000033 = power on counter
00000 = (Fixed)
Status5 : 0 = SOS history (Latest)
0 = SOS history (last time)
0 = SOS history (last but one)
0 = SOS history (2ndtime after shipping)
0 = SOS history (1sttime after shipping)
1 = Self-check (0=never self check,
1= factory Self check by pressing “MENU”
2=indication Self check by pressing “Blue (or OK)”
0000 = (Fixed)
17d010ff = Panel ID
These list is different from the models.
(There are lower items for leader models.)
Status6 : Main SOC EEPROM version , STM EEPROM version
Status7 : STM ROMCOR version , AJAX CE version
Status8 : 00014(Hex)=20times :Starting Count of Panel Maintenance-1
(for OLED) 00014(Hex)= 20times :Completed Count of Panel Maintenance-1
00001(Hex)= 1 time :Starting Count of Panel Maintenance-2
00001(Hex)= 1 time :Completed Count of Panel Maintenance-2
HDAVI version : 5 = Viera Link version
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3. Power Supply
3-1. Power Board Structure
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Power Board Structure -1 ( P Board only )
< P >
( Models are refer to P.11 )
PFC
IC
HO
Power
IC
LO
This block diagram is 2ch drive for backlight.
The number of channel is different by the models (LCD panels).
The VLED voltage is also different by the LCD panels.
VLED
Anode
Power
IC
1 ch
Cathode
LED
Drive
IC
2 ch
(Backlight)
A
PWM
P
BL-ON
16V
16V
REG
STB5V
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Power Board Structure -2 ( LDP Board only )
< LDP >
( only TH/TC-40F4##/40FS### , except Europe/Oceania )
AC Adaptor
DC19.5VAC
19.5V
4 ch
DCDC LED
Drive
IC
VLED
Anode
Cathode
(Backlight)
A
LDP
PWM
BL-ON
DCDC
16V
TV_SUB-ON
DCDC
STB5V
24
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Power Board Structure -3 ( P+LDP Boards )
< P + LDP >
PFC
IC
( only 50FS500** )
4 ch
DCDC LED
Drive
IC
VLED
Anode
Cathode
(Backlight)
P
HO
Power
IC
LO
PWM
A
BL-ON
LDP
16V
16V
DCDC
STB5V
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Power Board Structure -4 ( P+LDP Boards )
< P + LDP >
This LDP block diagram is 2ch drive for backlight of 65inch model.
4ch drive is for 75 inch models. The number of channel and
VLED voltage are different by the LCD panels.
PFC
IC
( only 65FX6**/75FX7** )
HO
Power
LO
IC
DCDC LED
Drive
IC
VLED1
VLED2
1 ch
2 ch
PWM
BL-ON
Anode
Cathode
Anode
Cathode
1 ch
2 ch
(Backlight)
A
P
LDP
16V
16V
DCDC
STB5V
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Power Board Structure -5 ( P Boards )
OLED
< P >
(TNPA6698)
( only 55FZ** )
IC7500
Power
IC
HO
LO
There is no drive circuit for backlight
P3
24V
24V
(T-CON)
12V
P
PFC
IC
IC7301
Power
IC
HO
LO
16V
EVDD_ON (BL-ON)
P2
REG
16V
TV_SUB-ON
REG
STB5V
A
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Power Board Structure -6 ( P+PB Boards )
OLED
< P + PB >
(TNPA6831)
PB
( only 65FZ** )
IC7500
Power
IC
HO
LO
PB6
There is no drive circuit for backlight
PB5
24V
EVDD_ON (BL-ON)
24V
PB4
(T-CON)
12V
P
(TNPA6830)
PFC
IC
IC7301
Power
IC
HO
LO
P6
16V
P2
REG
16V
TV_SUB-ON
REG
STB5V
A
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3-2. Stand by / Start up Operation
The explanation is for the case of “Power Board Structure -1 (P board only, ex.55FX600 )”,
but “LDP, P+LDP, P+PB” cases are basically same start up operation.
OLED models are also same start up operation.
The difference between OLED and LCD/LED is as below,
Item LCD/LED model OLED mode
Output voltage to Panel VLED 24V
Control signal name for Backlight/Panel BL_ON EVDD_ON
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Voltage Distribution ( A+P Boards )
Ex. 55FX600** series
<A+P>
(Each models are different pin allocation but operation is same.)
P
P3
64V(*)
Output
Up
convert
LED
Drive
1,5
VLED1,2
110-140V(*)
3,7
P2
14
BL_ON
LCD Module
A02
14
LCD Panel
T-CON
board
PNL12V
A16
44 - 51
16V
Output
POWER
Switch
(Ex. TNPA6376** )
1 - 4
9
10
16V
TV_SUB_ON
POWER_ON
1 - 4
9
10
STB5V
7
STB5V
7
Output
(*)The DC level is different by the LCD panel.
F15V
3.3V
12V
5V
3.3V
1.5V
1.0V
STB3.3V
PNL12V
A
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Start up Operation-1
<A+P>
Ex. 55FX600** series
Transformer
P
PFC
T7202
IC7201
DC/DC
IC7301
T7301
64V(*)
Output
16V
Output
(Each models are different pin allocation but operation is same.)
Q7402/04
64V(*)
L7815/16/
Q7804/01
(DC/DC)
Q7403
LED
Drive
IC7800
P3
1,5
3,7
P2
14
1 - 4
3
3
VLED1,2
(*110-140V)
6(light)
6(light)
5
BL_ON
16V
LCD Module
Power
For
LED
(Back
Light)
A02
A16
14
1 - 4
F15V
LCD Panel
T-CON
board
PNL12V
4
44 - 51
POWER
Switch
1
10
7
STB5V
7
STB5V
2
2
9
TV_SUB_ON
POWER_ON
9
10
KEY3
(*)The DC level is different
by the LCD panel.
DC/DC
IC7405
When the TV is plugged in, the power board outputs 5V for standby voltage.
When the power supply receives the TV_SUB_ON signal, it outputs 2 different voltages:
16V to the A board on pins 1, 2, 3 and 4 of connector P2.
64V(*) to the LED backlight drive part.
After A board is ready to display, it outputs Backlight_on command to P board.
P board output 110-140V(*) to the backlight of LCD panel on pins 3 and 7 of connecter P3
A
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Start up Operation-2
<A+P>
< from AC plug in to : P board >
( TNPA6376** )
( Through )
D7106
Rectifier
T7202
PFC
IC7201
7
1
D7217
C7213/15
( PFC = OFF
AC100V: 140V
AC240V: 330V)
( OFF )
15
HO
11
LO
10
D7104,
7105
R7104-
7105
Start Vcc
VH
1
VCC
IC7301
4
FB
PGS
VCC
feedback
Ex. 55FX600** series
T7301
Q7301
Q7302
PC7301
D7403
C7422
D7406/07
C7424
IC7401
64V(*)
16V
Q7402/04
( OFF )
Q7403/05
( OFF )
2
IC7405
3
EN
LED
Drive
IC7800
STB5V
SRV-5V
Anode1
Anode2
Cathode1
Tr
Cathode2
Tr
P3
1
5
3
7
13
14
1 - 4
7
P
9
PC7303
P2
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Start up Operation-3
<A+P>
< from AC plug in to : P board >
When the TV is plugged in, the rectifier start to produce DC voltage which leads
through PFC circuit directly to the power switches Q7301, Q7302. (PFC circuit
IC7201 does not operate at this moment.) Besides this DC voltage is provided also for
D7104, D7105 which provide start voltage to pin 1 of power supply IC 7301. When
the voltage on pin 1 rise up to predefined value IC7301 starts supplyinng of switching
pulses for Q7301, Q7302. Due to this current starts to lead through winding of T7301
which starts to generate output voltages. One of these voltages VCC is used for
power supplying of the IC 7301 to its pin 10
When the power supply starts up, the 16V is providing by D7406,07/C7424. This
voltage leads to IC7405, which is 5 volts DCDC converter.
1
This voltage (STB5V) is provided to A board via connector P2 pin7. So if the TV is
plugged in, STB5V is provided to A board without trigger signal.
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Start up Operation-4
<A+P>
< from to : A board >
1
2
AP
P2
9
5VS
IC7405
A02
9
77
STB5V
Ex. 55FX600** series
LCD_TV_SUB_ON
IC5000
3.3V
STB3.3V
Processing
IC8000
SoC
Signal
K
A02 K10
REMOTE
24 7
10
POWER
Switch
10
KEY3
LED_on
(Each models are different pin allocation but operation is same.)
OFF
(It can receive only Power SW)
North America Power LED: OFF
Except North America Power LED: OFF Power LED: RED
( Automatically )
Power SW on
Standby
(It can receive Power SW, Remote, Viera Link and so on)
20
3
3.3V
LED
34
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( Reference ) Start up Operation-4
<A+P>
< from to : A board >
1
2
A
P
P3
9
5VS
IC7405
A02
9
77
STB5V
IC8102
1.05V
Enable
LCD_TV_SUB_ON
IC5000
STB1.05V
STB3.3V
3.3V
LAN
JK8600
1
JK8705/8605
5V for
WiFi
IC8000
SoC
Signal
Processing
To WiFi adaptor
1
IC8706
Enable
A02 K10
24 7
The power line for LAN/WiFi
is supplied from Standby power.
*) If the setting of “Power on by
Apps”, etc. function is enable,
it working.
K
REMOTE
20
10
POWER
Switch
OFF
(It can receive only Power SW)
North America Power LED: OFF
Except North America Power LED: OFF Power LED: RED
10
KEY3
LED_on
Standby
(It can receive Power SW, Remote, Viera Link and so on)
( Automatically )
Power SW on
3
3.3V
LED
35
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Start up Operation-5
<A+P>
< from to : A board >
1
2
The STB5V from pin7 of connector P2 is applied to the Analog ASIC (IC5000) for
supplying power to the Main CPU (IC8000) on the A board. The Analog ASIC (IC5000)
converts the STB5V to STB3.3V. This voltage energize and prepare the microprocessor
(CPU) for program execution. The STB3.3V from the Analog ASIC (IC5000) is also applied to
the remote control receiver and the power LED on the K board through connector A02/K10.
When the Power Switch on, the key3 signal is grounded. (#1)
The IC8000 lights on the RED LED and is ready to power on the TV by receiving the Power
switch on, Remote on, Viera Link and so on. This is a standby state.
(#1)Only North America model: Power switch on is no need, automatically this procedure is operated after the TV
is plugged in. But the RED LED does not light.
When the power on command from the power switch, the remote control and so on is
provided to IC8000, IC8000 first outputs the “TV_SUB_ON” command. The “TV_SUB_ON”
command is provided to power board via pin 9 of connector P2.
(*) Just after transition to Stand-by mode, the TV_SUB_ON(16V) output for few minutes.
(North America model : 10s)
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Start up Operation-6
<A+P>
< from to : P/LD board >
( TNPA6376** )
D7106
Rectifier
D7104,
R7104-
2
IC7201
7105
7105
3
T7202
7
PFC
8
VCC
Start Vcc
Q7315
VH
1
3
STB
C7213/15
Q7201
HO
LO
VCC
IC7301
D7217
15
11
10
4
FB
PGS
9
( PFC = ON
AC100V: 380V
AC240V: 380V)
VCC
feedback
Ex. 55FX600** series
T7301
Q7301
Q7302
PC7301
PC7303
D7403
C7422
D7406/07
C7424
IC7401
Q7402/04
64V(*)
16V
SRV-VLED
Q7403/05
Q7801
Q7804
SRV-16V
2
IC7405
3
EN
Q7416
/17
L7816
L7815
Vcc
SRV-VLED1
SRV-VLED2
LED
Drive
IC7800
Tr
Tr
BL-ON
PWM
16V
STB5V
SRV-5V
1
Anode1
Anode2
5
Cathode1
3
Cathode2
7
P3
13
14
1 - 4
7
P2
Q7202
P
(*)The DC level is different by the LCD panel.
L=ON
PC7302
Standby/ON
Switch
Q7401
Q7414
9
SUB-ON
37
Page 38
Start up Operation-7
<A+P>
< from to : P board >
When the power board receives the TV_SUB_ON signal from IC8000 via pin 9 of
connector P2, it outputs 2 different voltages:
TV_SUB_ON command is carried to the primary side by PC7302. This voltage is leaded
to Q7202 which provide power supply VCC of PFC circuit. The PFC starts to operate.
Besides this voltage to go to Q7315 whcih provide the mode change signal to pin 3 of
IC7301. The operation of the IC 7301 changes the switching frequency from standby
state to working state because of providing high power current.
Output voltages from transformer T7301 start rising up until the moment when IC7401
2
16V to the A board on pins 1, 2, 3 and 4 of connector P2.
64V(*) to the LED drive part.
3
started to operate. This IC measures the 16V line output in the secondary side. The
output of this IC is provided by PC7301 to pin 4 of IC7301. IC7301 adjust the switching
frequency by this feedback signal.
The TV_SUB_ON signal also switches on the Q7402/03/04/05 to provide output
voltages (16V and 64V(*) ). The 64V(*) is provided to the LED Backlight Drive. The 16V
is provided to the A board.
. (*OLED) FZ series : The VCC of PFC also go to IC7501 on PB board and this power IC
also start working. The 24V is provided to the OLED panel power drive.
(*)The DC level is different by the LCD panel.
38
Page 39
Start up Operation-8
<A+P>
< : A board (SUB voltage) >
3
Ex. 55FX600** series
3, 7
VLED1/2(*)110-140V
IC7800
DCDC LED
Drive
64V(*)
16V
Q7402
/04
DC/DC
IC7503
16V
Q7403/05
PFC
T7202
IC7201
DC/DC
IC7301
P
( TNPA6376** )
P3
64V(*)
Output
Transformer
T7301
16V
Output
9
7
1
2
3
4
9
7
1
2
3
4
P2 A02
SRV-16V
STB5V
F15V
F15V
IC5230
A
IC8000
SoC
LCD_TV_SUB_ON
IC5000
ANALOG
ASIC
1.05V
DCDCEN
3.3V
IC8102
IC4506
STB3.3V
STB1.05V
HDMI3.3V
(*)The DC level is different by the LCD panel.
5V
IC5200
3.3V
IC8103
1.0V
1.8V
1.8V
SUB5V
IC5240
eMMC1.8V
SUB3.3V
IC5704
TU1.8V
SUB1.0V
39
Page 40
Start up Operation-9
<A+P>
< : A board (SUB voltage) >
3
The 16V(F15V) from the P board via pin1-4 of connector A02 is applied to Analog ASIC
IC5000 and ICs (Voltage regulators) on the A board to generate the SUB-Voltages used for
signal processing operation.
: SUB1.0V, 1.8V, 3.3V, 5V and HDMI3.3V, TU1.8V
Each voltage regulators start up by high state of DCDCEN signal which is pull up to F15V.
So F15V is provided to A board, each SUB-voltage regulator ICs start output.
40
Page 41
Start up Operation-10
<A+P>
< and : A board (PNL voltage) >
4
PFC
T7202
IC7201
DC/DC
IC7301
P
( TNPA6376** )
5
P3
VLED1/2(*)110-140V
64V(*)
Output
Transformer
T7301
16V
Output
1, 5
IC7800
DCDC LED
64V(*)
16V
Q7402
/04
Q7403/05
3, 7
Drive
Back Light
DC/DC
IC7405
16V
15
13
14
P2
LCD Module
15
13
14
9
7
1
2
3
4
9
7
1
2
3
4
A02
IC5260
F15V
STB5V
F15V
IC5420
12V
F15V
PNL12V
PWM
DCDCEN
T-CON
44 - 51
Panel_VCC_ON
BL_SOS
BL_ON
LCD_TV_SUB_ON
IC5000
ANALOG
ASIC
1.05V
3.3V
IC8102
IC8001
A16
STB3.3V
A
IC8000
SoC
STB1.05V
HDMI3.3V
(*)The DC level is different by the LCD panel.
5V
IC5400
3.3V
IC8103
1.0V
1.8V
SUB5V
SUB3.3V
IC5704
TU1.8V
SUB1.0V
41
Page 42
Start up Operation-11
<A+P>
< and : A board (PNL voltage) >
< : P board ( backlight drive ) >
4
The F15V is also used to generate the PNL-Voltage on A board. IC8000 outputs the
Panel VCC On signal. IC5260 starts generating the PNL12V by this signal. The PNL12V
is provided to T-con circuit of the LCD Module.
6
After that, IC8000 outputs the BL_ON command to the P board. The BL_ON command
turns on the IC7800 for LED backlight drive. Then the 64V rise up over 110V(*) and output
5
to the backlight on the LCD panel. The backlight starts lighting by PWM signals, and LCD
panel displays the pictures.
If the backlight drive circuit does not work normally, the BL_SOS signal is informed to the
IC8000. At that time, IC8000 stops outputting the TV_SUB_ON signal and blinks the red
LED 1 times.
(*OLED) FZ series : IC8000 outputs EVDD_ON (instead of BL_ON) command to P/PB
board and 24V output to T-CON board. The T-CON board starts operation for OLED panel.
(*)The DC level is different by the LCD panel.
42
Page 43
Start up Operation-12
<A+P>
< : P board ( backlight drive ) >
6
( TNPA6376** )
( PFC = ON
AC100V: 380V
AC240V: 380V)
VCC
D7106
Rectifier
T7202
PFC
IC7201
8
VCC
D7217
C7213/15
7
Q7201
15
HO
11
LO
10
VCC
IC7301
feedback
D7104,
7105
R7104-
7105
Start Vcc
Q7315
VH
1
3
STB
4
FB
PGS
9
Ex. 55FX600** series
T7301
Q7301
Q7302
PC7301
PC7303
D7403
C7422
64V(*)
D7406/07
C7424
IC7401
SRV-VLED
Q7402/04
Q7403/05
16V
Q7801
Q7804
SRV-16V
2
IC7405
3
EN
Q7416
/17
L7816
L7815
Vcc
SRV-VLED1
SRV-VLED2
LED
Drive
IC7800
Tr
Tr
BL-ON
PWM
16V
STB5V
SRV-5V
1
Anode1
Anode2
5
Cathode1
3
Cathode2
7
P3
13
14
1 - 4
7
P2
Q7202
P
(*)The DC level is different by the LCD panel.
L=ON
PC7302
Standby/ON
Switch
Q7401
Q7414
9
SUB-ON
43
Page 44
Reference: Voltage Distribution ( A+P+LDP Boards )
only TH-50FS500* series
(TNP4G631**)
<A+P+LDP>
LCD Module
P
64V(*)
Output
16V
Output
P2
15,16
12
LDP
LDP2
6,7
9
Up
convert
LED
Drive
LDP1
1-4
6-9
3
LDP2
1-3
VLED(*)
BL_ON
16V
10
1,3,5
LCD Panel
T-CON
board
PNL12V
A19
1 - 4
F16V
12V
PNL12V
POWER
Switch
(Ex. TNP4G630** )
9
10
TV_SUB_ON
POWER_ON
2
4
STB5V
7
STB5V
11
Output
P2
(*)The DC level is different by the LCD panel.
A02
5V
3.3V
1.5V
1.1V
3.3V
A
STB3.3V
44
Page 45
Reference: Voltage Distribution ( A+P+LDP Boards )
only 65FX6**/75FX7** series
<A+P+LDP>
(Each models are different pin allocation but operation is same.)
LDPP
LDP5/LDP6
LDP3
Up
5,6
1
convert
LED
Drive
(Ex. TNPA6375**
for 65FX6**)
1
1
VLED1/2(*)
3
3
3
LDP2
BL_ON
64V(*)
Output
P2
19,20
13
LCD Module
LCD Panel
T-CON
board
PNL12V
A16
44 - 51
14
POWER
Switch
16V
Output
STB5V
Output
(Ex. TNPA6374** for 65FX6** )
(*)The DC level is different by the LCD panel.
1-4
12
P2
F16V
16V
1-4
12V
PNL12V
9
TV_SUB_ON
9
5V
3.3V
A
1.5V
POWER_ON
7
STB5V
12
7
A02
1.1V
3.3V
STB3.3V
45
Page 46
Reference: Voltage Distribution ( A+P Boards )
only 55FZ*** series
OLED Module
<A+P>
OLED
P
PFC
24V
Output
EVDD_ON
16V
Output
P3
15
17
1-7
OLED Panel
8
-
24V
T-CON
board
PNL12V
EVDD_ON
(BL_ON)
P2
16V
19
1-7
A02
24 - 26
F15V
12V
PNL12V
GK
POWER
Switch
(TNPA6698** )
STB5V
Output
TV_SUB_ON
15 14
19
13
POWER_ON
5VS
16
13
5V
3.3V
1.5V
1.1V
3.3V
A
STB3.3V
46
Page 47
Reference: Voltage Distribution ( A+P+PB Boards )
only 65FZ*** series
(TNPA6831** )
PB
PB5
<A+P+PB>
OLED Module
OLED Panel
OLED
GK
POWER
Switch
PB6
P6
PFC
P
(TNPA6830** )
Output
1 / 3
1 / 3
24V
EVDD_ON
16V
Output
STB5V
Output
8
-
15
24V
PB4
1
EVDD_ON
(BL_ON)
P2
1-7
15 14
19
13
16V
TV_SUB_ON
POWER_ON
5VS
19
1-7
16
13
A02
F15V
3.3V
T-CON
board
PNL12V
12V
5V
3.3V
1.5V
1.1V
STB3.3V
24 - 26
PNL12V
A
47
Page 48
Simple Power On Sequence (F Series)
< F4 series >
( Plug in )
STB5V output
Power LED Green
TV_SUB_ON signal
PFC circuit ( IC7201/T7201 ) start working
StandbyPower On
Power Off
Power LED Red Power LED off
Power SW on / Remote on
(*) The DC level is different by the LCD panel.
AC Plug in
STB5V (form P to A)
Standby / Power on
Power LED
Power on
SUB_ON (from A to P)
(Standby)
16V (from P to A)
5V
16V
16V / 32(*)V output
PANEL_VCC_ON signal
PNL12V output
BL_ON_ON signal
32V(*) up to VLED
< Display start >
North America :
(Power LED Green RED)
(Power LED Red OFF)
(Power Off no exist)
Panel_Vcc_ON (from A to Panel(TCON))
PNL12V (from A to Panel(T-CON) )
BL_ON (from A to P/LDP
VLED (from P to Panel(Backlight) )
Ex.32V
12V
VLED
48
Page 49
Simple Power On Sequence (FX/FS/FZ Series)
< FX/FS/FZ series >
Also 16V is necessary before Power LED.
( Plug in )
STB5V output
TV_SUB_ON signal
16V / 64V(*) /24V(OLED) output / PFC circuit start working
StandbyPower On
Power LED Red
Power Off
Power LED off
TV_SUB_OFF TV_SUB_OFF
Stop 16V / 64V(*)
Stop 16V / 64V(*)
(*) The DC level is different by the LCD panel.
AC Plug in
STB5V (form P to A)
SUB_ON (from A to P)
16V (from P to A)
Standby / Power on
Power LED
Panel_Vcc_ON (from A to Panel(TCON))
5V
Power on
(Standby)
Power on
16V
(Standby)
Power on
Power LED Green
PANEL_VCC_ON signal
PNL12V output
BL_ON_ON signal
64V(*) up to VLED
< Display start >
Power SW on / Remote on
FZFX/FS
EVDD_ON_ON signal
24V output
< Display start >
North America :
(Power LED Green RED)
(Power LED Red OFF)
(Power Off no exist)
PNL12V (from A to Panel(T-CON) )
BL_ON/EVDD_ON (from A to P/LDP/PB)
VLED (from P to Panel(Backlight) )
FX/FS
ex.64V(*)
24V (from P/PB to Panel(T-CON))
FZ
output to T-CON
12V
VLED,
ex. 120V
24V
49
Page 50
3-3. SOS Protection Circuit and
Troubleshoot of Power Problem
50
Page 51
LED Blinking Summary
When an abnormality occurs in the unit, the “SOS Detect” circuit is triggered and the TV shuts down.
Shut down means that the unit turns off the TV_SUB_ON signal. The power LED on the front panel will
flash a pattern indicating the circuit area that has detected an abnormality.
Model
name
Detect content
BL_SOS (LED driver)
EVDD_SOS (OLED panel power)
Power on problem
(Error F15V/SUB3.3V voltage)
Power on problem
(Error SUB5V/1.5V/1.1V voltage)
OLED Panel (TCON) SOS
Memory (eMMC) read problem
No voltage SUB3.3V
(after wake up once)
MT5561
(F4** )
Blinking Time
Peaks LD11
(Asia/Latin
FS***)
MT5581P
(Euro
FS***)
MT5811Q
(FX6**/
700-740)
MT5811P
(FX750-
800)
MT5811P
(FZ***)
OLED
1
(occurred several
1
sec later
after power on)
1 1 1 1
quick 1
(occurred soon
---
after power on)
--- --- --- ---
quick 3
--- --- --- --- --- 2
--- quick 2, 4 --- --- --- ---
7 7 7 7 7 7
Estimated
Defect
Board
Panel/P
/PB
P/A
P/A
Panel/A
A
A
Audio amplifier: SOUND_SOS
FRC_SOS (IC9000)
Emergency SOS
9 9 9 9 9 9
--- ---
--- --- 10 10
13 13 13 13 13 13
A/
speaker
A
A
51
Page 52
Troubleshooting for LED Blinking ( 1 time blink ) for A+P type -1
<A+P>
<Protection Circuit>
P3
VLED1/2(*)110-140V
64V(*)
PFC
T7202
IC7201
DC/DC
IC7301
P
( TNPA6376** )
Transformer
Q7402
/04
64V(*)
Output
T7301
16V
Output
Back Light
1, 5
IC7800
DC/DC Drive
16V
Q7403/05
3, 7
LED
LCD Module
T-CON
IC5260
12V
44 - 51
PNL12V
A16
IC8000
Panel_VCC_ON
F15V
Tr
15
14
15
14
9
9
ON OFF
IC3800
AMP
SOUND_SOS
BL_SOS
BL_ON
LCD_TV_SUB_ON
IC5000
(OFF)
N SOS
9 Blink
1 Blink
N SOS
(OFF)
7 Blink
Low
voltage
16V
1
2
3
4
1
(OFF)
detect
Over voltage
2
3
4
N OFF
detect
protection
P2
A02
F15V
IC5420
IC8001
DCDCEN
3.3V
HDMI3.3V
Ex. 55FX600* series
(*)The DC level is different by the LCD panel.
5V
IC5400
3.3V
IC8103
1.0V
1.8V
SUB5V
SUB3.3V
IC5704
TU1.8V
SUB1.0V
A
52
Page 53
Troubleshooting for LED Blinking ( 1 time blink ) for A+P type -2
A+P Board Type ( except TX-65/55FX74#/75#/78#, TH/TC-65/55FX800)
LED blinks Detail error Board may defect
1 BL_SOS (LED driver) Panel / P
<A+P>
If the IC7800 detects
1.abnormal current of backlight LEDs ( = Backlight LED broken or Low(No) VLED voltage )
2.abnormal DC/DC power supply of IC7800 (does not rise up the VLED voltage )
or the IC7800 does not work (No Vcc or No BL_ON/PWM signal or defect itself),
the IC7800 output BL_SOS signal to IC8000 LED blink 1 time.
Ex. 55FX600** series
64V(*)
SRV-VLED
T7301
D7403
C7422
Q7402/04
64V(*)
Q7801
Q7804
Q7416
L7816
L7815
LED
Drive
IC7800
Vcc
(*)VLED : The DC level is different by the LCD panel.
1
124-110V(*)
SRV-VLED1
SRV-VLED2
124-132V(*)
Q7802
Tr
Anode1
Anode2
5
Cathode1
3
Cathode2
7
Q7803
P3
Back
light
LCD Module
LCD Panel
T-CON
board
( TNPA6376** )
P
D7406/07
C7424
16V
Q7403/05
Q7414
Q7417
SRV-16V
SUB-ON
16V
BL-ON
PWM
P2
15
13
14
1 - 4 1 - 4
9
A02
15
13
14
9
(Low=Normal)
BL_SOS
BL-ON
PWM
SUB-ON
A
IC8000
SoC
53
Page 54
Troubleshooting for LED Blinking ( 1 time blink ) for A+P type -3
A+P Board Type ( except TX-65/55FX74#/75#/78#, TH/TC-65/55FX800)
(Ex. 55FX600* series)
<A+P>
(Power off)
Disconnect P3 connectors.
Short check between
pin3,7 of P3 and GND.
Shorted
P board
(P board: TNAP6376**)
SRV-VLED1SRV-VLED2
Both
OK
Connect P3 connector.
Power on.
Check if the voltage
of SRV-VLED1/2(pin1,5 of P3)
before LED 1 blink?
NG
Short check between SRV-
VLED of P board and GND.
Shorted
P board
OK
Panel Module
over100V(*)
OK
Panel Module
(P board: TNAP6376**)
SRV-VLED
(*)VLED : The DC level is different by the model (LCD panel).
54
Page 55
Troubleshooting for LED Blinking ( 1 time blink ) for A+P type -4
A+P Board Type ( only TX-65/55FX74#/75#/78#, TH/TC-65/55FX800)
LED blinks Detail error Board may defect
1 BL_SOS (LED driver) Panel / P
Explanation is same as page of “Troubleshooting for LED Blinking ( 1 time blink ) for A+P type -2”
<A+P>
Ex. 55FX800 series
64V
Q7402/04
D7403
C7422
T7302
D7406
C7424
Q7403/05
64V
DC/DC
Power
IC
IC7801
Vcc
Q7416
L7801
Q7809
Q7417
Vcc
108V(*)
LED
Drive
IC7800
SRV-VLED
Q7808
Q7804
Tr
Q7807
Q7803
(*)VLED : The DC level is different by the LCD panel.
P3
7,9
LCD Module
PA7801
PA7802
PA7803
PA7805
PA7806
PA7807
Q7802
PA7804
Q7805
PA7808
Q7801
14
12
7,9
14
12
P4
P2
15
4
2
LCD Panel
Backlight
T-CON
4
2
A02
15
(Low=Normal)
BL_SOS
board
A
( TNPA6704** )
P
16V
Q7414
SRV-16V
16V
SUB-ON
BL-ON
PWM1-8
14
13,16-22
1 - 4 1 - 4
9
14
13,16-22
9
BL-ON
PWM1-8
SUB-ON
IC8000
SoC
55
Page 56
Troubleshooting for LED Blinking ( 1 time blink ) for A+P type -5
A+P Board Type ( only TX-65/55FX74#/75#/78#, TH/TC-65/55FX800)
<A+P>
Disassemble P board.
Open check of 8 Fuses
(PA7801-PA7808) of
P board
Any one of them opened
Both Panel and P board
OK
(all shorted)
Short check of 8 Transistors
(55inch=Q7801-Q7808
65inch=Q7804-Q7811)
between
Collector and Emitter
Any one of them shorted
P board
Both
OK
Short check between SRV-
VLED of P board and GND.
Shorted
P board
Panel Module
OK
56
Page 57
Troubleshooting for LED Blinking ( 1 time blink ) for A+P type -6
A+P Board Type ( only TX-65/55FX74#/75#/78#, TH/TC-65/55FX800)
55inch P board (TNPA6704**) 65inch P board (TNPA6710**)
PA7801-PA7808
<A+P>
PA7801-PA7808
1: Emitter
(4: base)
SRV-VLED
Q7805Q7806Q7807Q7808
P2 connector
SRV-VLED
Q7801Q7802Q7803Q7804
Collector
Q7804 Q7805
Q7811
Q7810
Q7809
E:emitter
Q7808
Q7807
Q7806
C:collector
57
Page 58
Troubleshooting for LED Blinking ( 1 time blink ) for A+P+LDP type -1
<A+P+LDP>
<Protection Circuit>
LDP5/LDP6
LDP
(Ex. TNPA6375**)
LDP3
PFC
T7202
IC7201
DC/DC
IC7301
P
( Ex. TNPA6374** )
Transformer
Output
T7301
VLED1/2(*)
64V(*)
16V
Output
Back Light
1 3
IC7800
LED
DC/DC Drive
15,6
19,20
64V(*)
Q7402
/04
Q7403/05
13
16V
16V
Tr
LDP2
P2
LCD Module
T-CON
44 - 51
IC5260
4
15
12V
PNL12V
A16
IC8000
3
9
1
2
3
4
14
9
IC3400
DSP/AMP
ON OFF
F15V
1
2
3
4
N OFF
(OFF)
(OFF)
Panel_VCC_ON
SOUND_SOS
BL_SOS
BL_ON
LCD_TV_SUB_ON
IC5000
detect
N SOS
9 Blink
1 Blink
N SOS
(OFF)
7 Blink
Low
voltage
detect
Over voltage
protection
A02
F15V
IC5230
IC4506
DCDCEN
3.3V
HDMI3.3V
Ex. 65FX600* series
(*)The DC level is different by the LCD panel.
5V
IC5200
3.3V
IC8103
1.0V
1.8V
SUB5V
IC5704
TU1.8V
SUB3.3V
SUB1.0V
A
58
Page 59
Troubleshooting for LED Blinking ( 1 time blink ) for A+P+LDP type -2
LED blinks Detail error Board may defect
1 BL_SOS (LED driver) Panel / LDP / P
<A+P+LDP>
If the IC7800 detects
1.abnormal current of backlight LEDs ( = Backlight LED broken or Low(No) VLED voltage )
2.abnormal DC/DC power supply of IC7800 (does not rise up the VLED voltage )
or the IC7800 does not work (No Vcc or No BL_ON/PWM signal or defect itself),
the IC7800 output BL_SOS signal to IC800 LED blink 1 time.
Ex. 65FX600* series
SRV-64V
T7301
D7403/06
C7422/23
Q7402/04
64V(*)
P2
SRV-64V
LDP3
19,
20
13 1
5,
6
Q7804
Q7801
LDP
L7814
L7813
Vcc
LED
Drive
IC7800
(*)VLED : The DC level is different by the LCD panel.
1
VLED1(*)
SRV-VLED1
SRV-VLED2
VLED2(*)
Q7802
Anode1
LDP5
3
Cathode1
Anode2
1
LDP6
Back
light
LCD Module
LCD Panel
T-CON
3
Cathode2
board
Q7803
Tr
P
D7412/16
( TNPA6374** )
C7424
Q7403/05
16V
Q7414
( TNPA6375** )
SRV-16V
SUB-ON
1 - 4
9
P2
432
16V
LDP2
A02
15
14
13
1 - 4
9
(Low=Normal)
BL_SOS
BL-ON
PWM
SUB-ON
A
IC8000
SoC
59
Page 60
Troubleshooting for LED Blinking ( 1 time blink ) for A+P+LDP type -3
Ex. 65FX600* series
<A+P+LDP>
(Power off)
Disconnect LDP5 and LDP6
connectors. Short check between
pin3 of LDP5 and GND,
pin3 of LDP6 and GND.
NG
LDP board
ALL OK
Connect LDP5 and LDP6
connectors. Power on.
Check if the voltage
of SRV-VLED1, VLED2 (pin 1 of
LDP5/LDP6) before LED 1 blink?
NG
Short check between SRV-
VLED1, VLED2 and GND
Shorted
Panel Module
Both OK
OK
Panel Module
Power on.
Check if the voltage
of SRV-64V (pin 19/20 of P2)
before LED 1 blink?
NG
P board
OK
64V(*)
LDP board
(*)VLED : The DC level is different by the LCD panel.
60
Page 61
Troubleshooting for LED Blinking ( 1 / 2 time blink ) for OLED -1
<A+P+PB>
OLED
<Protection Circuit>
( TNPA6831**)
24V
DC/DC
IC7500
Output
PB
400V
PFC
T7205/
T7206
IC7201
DC/DC
IC7301
PB6
P6
Transformer
T7301
16V
Output
P
( TNPA6830**)
CN5
8 - 15
24V
Q7560-62
DC/DC
IC7405
Q7403/05
PB5
STB5V
16V
PB4
P2
A02
1
19
15
13 13
1
-
7
14
5
7
1
4
A02
OLED Module
T-CON
F15V-AD
-
-
F15V
IC5260
12V
Panel_VCC_ON
EVDD_ON
IC3800/01
AMP
ON OFF
N OFF
24 - 26
PNL12V
(OFF)
(OFF)
DCDCEN
EVDD
CN6CN11
_DET
Tr
Q4012
IC9000
SOUND_SOS
LCD_TV_SUB_ON
IC5000
detect
IC4506
3.3V
32
N SOS
Error
_DET
40
41
9 Blink
Over voltage
protection
HDMI3.3V
A16
1 Blink
(OFF)
2 Blink
N SOS
N SOS
IC8000
7 Blink
Low
voltage
detect
Ex. 65FZ series
EVDD_DET
Error_DET
( 55FZ series combine P and PB board to P board )
=monitor 24V
=PNL12V(or power in T-CON) error
IC5220
IC5200
IC8103
IC9150
IC9160
5V
3.3V
1.0V
0.95V
1.5V
SUB5V
SUB3.3V
SUB1.0V
MStar0.95V
MStar1.5V
A
61
Page 62
Troubleshooting for LED Blinking ( 1 / 2 time blink ) for OLED -2
LED blinks Detail error Board may defect
<A+P+PB>
OLED
1
EVDD_SOS (OLED panel power)
2 OLED Panel SOS (T-CON power) Panel / A
If the T-CON board detects
1.voltage error of 24V from PB board , the error
2.problem the power circuit in T-CON board (that is provided from PNL12V)
the error signal is output from T-CON board to A board.
1. LED blink 1 time
2. LED blink 2 time
OLED Module
T-CON
CN11
24 - 26
PNL12V
SRV-12V
Panel_VCC_ON
EVDD(24V)
LCD_TV_SUB_ON
_DET
32
N SOS
Tr
IC9000
PB
24V
Output
( TNPA6831** )
( TNPA6830** )
CN5
8 - 15 7 - 12
8 - 15
24V
24V
PB5
Q7402
24V
PB4
1
15
A02
19
14
PNL12V
IC5260
12V
F15V
EVDD_ON
ON OFF
P2
Panel / PB / A
CN6
Error(Power of TCON)
_DET
41
40
A16
2 Blink
Q4012
1 Blink
IC8000
N SOS
N SOS
P
( 55FZ series combine P and PB board to P board )
16V
Output
Q7403/05
16V
1-7
1-7
A02
A
62
Page 63
Troubleshooting for LED Blinking ( 1 / 2 time blink ) for OLED -3
<A+P+PB>
OLED
FZ series
1 time blink
(check of 24V/12V line)
(Power off)
Short check between
SRV-24V and GND.
Disconnect CN5 connector
on TCON board. Check if
which board is shorted.
Panel Module Panel Module oror
PB(65FZ) / P(55FZ)
Module
Refer to the previous page block diagram.
2 time blink
(check of 12V line)
OK
Power on.
Check if the voltage
of SRV-24V.
Is rise up before LED 1 blink?
NG
PB(65FZ) / P(55FZ)
Module
OK
Disconnect the A02 connector.
(Power off)
Short check between
SRV-12V and GND.
ShortedShorted
Check if which board is
shorted
A board
OK
Power on.
Check if the voltage
of SRV-12V.
Is rise up before LED blink?
OK
Check if the voltage
of EVDD_ON (pin 1 of PB4)
just before LED blink?
OK
(3.3V)
NG
A board
NG
PB5
PB board for 65FZ
PB4
EVDD_ON
24V
24V
P board for 55FZ
EVDD_ON
P3
P2
CN11
12V: 7-12pin
CN5
24V: 8-15pin
CN11
CN5
T-CON Board
Panel Module
A02
SRV-12V
A Board
63
Page 64
Troubleshooting for LED Blinking ( Quick 1 / 3 time blink )
LED blinks Detail error Board may defect
Quick 1 / 3
(only for Asia/Latin
Power on problem
(No F15V/SUB3.3V/SUB1.5V voltage)
FS5**/6** )
F15V(16V) is supplied from P board. If the F15V /SUB voltage is not supplied
LED blinks quickly 1 or 3 times.
Ex. TH-**FS500* series
Power on.
Check if voltage P15V at
pin 1,3,5 of A02
connector before LED
blinks?
Yes
(15V)
A board
No
Remove P2 connector.
Check if short-circuit at
pin 1,3,5 of A02
connector?
Yes
(Shorted)
A board
No
P board
SRV-15V
A02
12V
IC4900
AMP
P/A
IC5500
A
P
16V
Q7403
16V
P2
1
2
3
1
3
5
IC5420
P15V
IC5400
3.3V
IC8103
1.2V
1.5V
IC8101
5V
DCDCEN
SUB5V
IC8000
SUB3.3V
SUB1.1V
SUB1.5V
64
Page 65
Troubleshooting for LED Blinking ( 9 time blink )
LED blinks Detail error Board may defect
9 Audio amplifier: SOUND_SOS A/Speaker
Audio amplifier is sourced power F15V from P board. If the amplifier work abnormally (may due
to short-circuit or overload), the SOUND_SOS signal will go low level and be detected by
IC8001 LED blinks 9 times.
Ex. 55FX600*
Remove A12 connecter.
Power on.
Does LED blinks again?
Yes
(9 time blinks)
A board
No
(Power on)
P BOARD
L/R speaker
(wire of speaker)
16V
From
1
-
4
A02
F15V
A12
IC3800/01
AMP
IC8000
9 Blink
SOUND_SOS
N SOS
A
65
Page 66
Troubleshooting for LED Blinking ( 2/4/7/10/13 time blink )
LED blinks Detail error Board may defect
Quick 2 / 4
(only Asia/Latin
FS5**/6** )
7 No voltage SUB3.3V detected A
10
(only FX750-800,
FZ*** series)
13 Emergency SOS A ( eMMC / Nand Flash )
Quick 2 / 4 blinks is problem about memory access ( IC8900 or IC8000 )
7 blinks is problem about the power line of SUB3.3V.
Memory (eMMC: IC8900) read problem
FRC_SOS (Initialization of IC9000)
A ( eMMC / Nand Flash )
A (IC9000)
10 blinks is problem about initialization of FRC IC (IC9000).
13 blinks is problem about IC8000 and software issue.
(mostly case the memory (eMMC / NAND Flash) IC problem )
IN THESE CASES, A BOARD DEFECTS
66
Page 67
Troubleshooting for No Picture and No OSD (Power LED is lit = No blinking)
< F4/FS/FX series >
Try the “LCD Panel
Test Mode”
(refer to P.19)
No Picture
Is the power LED situation
changed after pushing the
button for entering Test
Mode?
No change
(LED keep lit)
Replace A board
Refer to the block diagram of “Troubleshooting for LED Blinking (1 time blink )” page
Patterns are
displayed
LED blink (except TC- model)
LED off (TC- model)
Replace A board
Or sound check with TV mode
Check if the Backlight is lit.
(open the back cover and
check from back side)
Lit
(sound is OK)
Confirm(Clean) the flat
cable connection
(between A board and T-CON
board of LCD Panel)
No lit
(no TV
sound)
Check if voltage VLED (*)
No
at SRV-LED in P board
Yes
Replace LCD Panel
(Backlight part)
No
Picture
Green LED
Replace P board
LCD Module
Disconnect A15or16or19
connecter(FFC cable to
Panel). Check if voltage
SRV-12V (PNL12V) in A
If entering the test mode,
the Power LED will Blink(except TC- model)
or OFF (TC- model).
Ex. FX600* series
(*) The voltage of VLED is different by the LCD panel.
board
Yes
(12V)
Replace LCD Panel
(T-CON part)
No
Replace A board
A
A02
1
2
3
4
F15V
A16
IC5260
12V
Panel_VCC_ON
IC8000
T-CON
44-51
PNL12V
SRV-12V
67
Page 68
Troubleshooting for No Picture and No OSD (Power LED is lit = No blinking)
< FZ series >
Try the “LCD Panel
Test Mode”
(refer to P.19)
Is the power LED situation
changed after pushing the
button for entering Test
Mode?
Replace A board
Refer to the block diagram of “Troubleshooting for LED Blinking (1 time blink )” page
No Picture
No change
(LED keep lit)
Patterns are
displayed
Replace A board
LED blink (except TC- model)
LED off (TC- model)
Confirm(Clean) the flat
(between A board and T-CON
board of OLED Panel)
Disconnect CN11 connecter
Check if voltage SRV-12V
(PNL12V, SRV-12V) in A
cable connection
on TCON board.
board
No
OLED
No
Picture
Green LED
Replace A board
OLED Module
T-CON
If entering the test mode,
the Power LED will Blink(except TC- model)
or OFF (TC- model).
Yes
(12V)
Replace OLED Panel
(T-CON part)
A02
1
2
3
4
5
F15V
IC5260
12V
Panel_VCC_ON
IC8000
CN11
24-26
PNL12V
SRV-12V
A
68
Page 69
Troubleshooting for No Power On (Power LED is off = No blinking) -1
< F4 series >
Disconnect A10 connecter.
Power on check few times.
(because we can’t check
the power LED)
NG
Power on
Replace K board
No
Picture
LED off
Check if the output of
STB5V.
NG
Disconnect A02 connecter.
Short check of STB5V line
in A board.
Shorted
Replace A board
Replace A board
OK
Replace P board
No
Shorted
69
Page 70
Troubleshooting for No Power On (Power LED is off = No blinking) -2
< FS/FX/55FZ series >
Disconnect A10 connecter.
Power on check few times.
(because we can’t check
the power LED)
NG
Check if the output of
STB5V.
NG
Disconnect A02 connecter.
Short check of STB5V line
in A board.
Shorted
Power on
OK
No
Replace K board
Replace P board
Both of STB5V and 16V are necessary before lighting power LED.
( refer to page 49 of “Simple Power On Sequence (FX/FS/FZ Series)” )
No
Picture
LED off
Check if the output 16V
(SRV-16V in A board)
NG
Disconnect A02 connecter.
Short check the SRV-16V
In A board.
OK
Replace A board
Replace A board
Shorted
(A+P)
P(LDP)
Shorted
Replace A board
P2
A02
STB5V
16V
A
A+P or A+LDP models
50FS***,
65FX6**, 75FX7**, 75FX8**
(A+P+LDP)
STB5V
A02
P2
P
16V
LDP3
LDP
A
No shorted
Replace P(LDP) board
A+P+LDP models (65FX6**, 75FX7**/FX8**)
Disconnect LDP3 connecter.
Short check the SRV-16V in
P board.
No shorted
Replace LDP board
Replace P board
Shorted
70
Page 71
Troubleshooting for No Power On (Power LED is off = No blinking) -3
< 65FZ series >
Disconnect P6 connecter.
Power on check.
Connect P6 connecter.
Disconnect A10 connecter.
Power on check few times.
(because we can’t check
the power LED)
Check if the output of
STB5V.
NG
NG
Both of STB5V and 16V are necessary before lighting power LED.
( refer to page 49 of “Simple Power On Sequence (FX/FS/FZ Series)” )
Replace PB board
Power LED lit
Wait enough time to discharge before connect P6
Replace K board
Power on
OK
Check if the output 16V
(SRV-16V in A board)
OK
Replace A board
No
Picture
LED off
NG
Disconnect A02 connecter.
Short check of STB5V line
in A board.
Shorted
Replace A board
No
Shorted
Replace P board
NG
Disconnect A02 connecter.
Short check the SRV-16V
In A board.
No shorted
Replace P board
Shorted
Replace A board
P2
P
400V
PB
STB5V
16V
A02
A
71
Page 72
4. Handling and Rear Cover Disassemble and Assemble
72
Page 73
Rear Cover Disassemble / Assemble -1
From design concept, the rear cover structure for some model is changed. The screws are decreased and
there are hooks on the rear cover.
Target model : TX/TH/TC-65/55/49FX700-73# , TH-65/55/49FX740 for Oceania
( 75/43 inch is same as previous model)
<Disassemble> <Assemble>
1. Put the rear cover shift from top edge, adjust
the hook of rear cover to the hole of the panel.
Boss for putting on the metal
hole hook
when standing the unit
Rear Cover
Slide
upward
*There are some screws
on the bottom side also.
The number is depend
on the size.
Refer to next page.
1.Remove the terminal
cover and all screws
for rear cover.
*There are screws on
the bottom side also.
Panel
Metal for wall mount screw
2. Pull the bottom of
Slide downward
3. Slide the rear cover
rear cover towards
yourself.
downward direction
then remove the rear
cover.
<Side View>
Slide upward
2. Slide the rear cover to the top end of
the panel at right side and left side.
3. Push the circumference of rear cover and
fit it. Check that there is no floating and
fix all the screws.
73
Page 74
Rear Cover Disassemble / Assemble -2
How to remove the bottom screws
Lay down on the table
Example1
Use ratchet type driver/wrench
Bottom Screw Type
Example2
Example3
Example4
under
50mm
8mm
Shift to the edge of the table
M3x8
(Head Hexagon)
Shift
Table
Insert objects that become step between unit and the table
*) The product pictures and
drawing is for explanation.
UP
Table
It is not 2018 model.
74
Page 75
Rear Cover Disassemble / Assemble -3
From design concept, the rear cover structure for some model is changed. The screws are decreased and
there are hooks on the rear cover.
Target model : TX/TH/TC-49/43FX6##, TH-49/43FX5## ( other inch is same as previous model)
<Disassemble> <Assemble>
1.Remove all screws for rear cover.
2. Pull the bottom of rear
cover towards yourself.
*The left side is hard a little because
of hook next of the control button.
Panel
GK board
Control button
<Side View from Top>
Rear Cover
1.Fit the top side of rear cover.
2. Push the circumference of
rear cover and right side of
control button and fit it.
Check that there is no
floating all circumference
and fix all the screws.
Push also next to control button
(top)
3. Lift the rear cover up and remove it.
*It is hard a little. Refer to right
structure drawing
Rear Cover
Panel
<Side View>
(bottom)
75
Page 76
Handling of Glass Bezel Model
From design concept, there is no chassis for full area. The top/right/left edge area is
glass design. Be careful to handing.
Target model : TX-65/55/49FX74#/75#/78#*, TH/TC-65/55/49FX800*
Do not hold the screen
part strongly as shown
Left when moving panel
or TV unit. This may cause
Malfunction or damage.
When lifting the panel or
TV unit, support the panel
as shown left.
Do not hold the screen
*There is a possibility that below specification
will be changed by each factory.
< Panel Module > (under studying)
The base metal(chassis) is assembled to
panel module for protection purpose.
It can be apply to repair directly.
Protective sheet
Glass Bezel
part strongly.
Do not hold strongly
Base Metal
(chassis)
Remove the protective sheet and the
protective film after installing the pedestal.
76
Page 77
Rear Cover Disassemble / Assemble of Glass Bezel Model
Target model : TX-65/55/49FX74#/75#/78#*, TH/TC-65/55/49FX800*
<Disassemble> <Assemble>
1.Remove all covers.
order = (4), (3), (2), (1)
1.Slide and Fit the M6 screw
position of rear cover.
*pay attention to the Hook
at the top of the rear cover.
58mm
Distance between bottom
of the unit and basement
(2)Slide upward
Hook(slide)
2.Remove all screws for rear cover.
There are 3 kinds of screw, but no
marking.
( The number is different by model.)
M3 M6
*1) refer to page “Rear Cover
Disassemble / Assemble-2”
3. Remove the rear cover.
Pull the bottom of it towards
yourself and unlock the latch.
Slide upward and remove it.
Be careful not to scratch the
panel.
: Latch point
M3 *1
(Hexagon)
2.Push and lock the latch point
at both side.
: Latch point
Rear cover
Chassis
3.Fix all screws and cover
cover order = (1), (2), (3), (4)
*The material of rear cover is easy
to trace the fingerprint.
Please use the soft cloth for cleaning.
(1) Pull towards yourself
Rear cover
Chassis
77
Page 78
5. Information of OLED model
(Basically same as last year model EZ series)
78
Page 79
Handling of OLED TV
1. Notes of handling the OLED TV
The thickness of the OLED TV is much thinner than that of LCD. The minimum thickness of OLED TV is about 7mm.
(There is no rear cover at top side.)
So the shape of OLED TV(panel) bends or undulates more easily than that of LCD.
When setting or moving OLED TV, it is necessary to handle politely and carefully.
2. Handling rule for Service
Handling area : Rear cover area (= Area where reinforcement parts are mounted on the back of panel)
FZ1000/950/800
(Handling NG)
Handling NG area
Panel upper side area
w/o reinforcement parts
(Handling OK)
Rear cover area
w/ reinforcement parts
* TH-TC-**FZ1000 / TX-**FZ950 :
Don’t handle the separate speaker
OLED
Handling NG
Example 1 Example 2
*Not to move OLED TV (panel)
in parallel position.
*Not to move OLED TV (panel) with one hand
grasping at upper side.
79
Page 80
Panel Maintenance function-1
2 (Hexadecimal)
仕様概略
OLED
OLED model have Panel Maintenance function to reduce “image retention”.
1. What is Panel Maintenance function?
The use of the OLED panel for a long period causes no uniformity of charge in each OLED cell or
degeneration of OLED light emission elements, and these are possible causes of "image retention“.
To reduce the "image retention", OLED models have Panel Maintenance function.
The Panel Maintenance works as necessary. There are two modes depending on TV operating time (“3 hours” or “1000(#) hours”).
Both modes are activated in stand-by mode after turned off the TV. During the panel maintenance, LED turns to orange.
2. Panel Maintenance function
2-1. Panel Maintenance-1 mode
This mode can reduce “image retention” caused by no uniformity of
charge in each OLED cell. It reset the charge of each cell.
(Condition for activating Panel Maintenance-1 mode)
1. Whenever TV operating time passes total 3 hours or more and TV turns off
by remote control, this mode is activated automatically.
2. When you select “Panel Maintenance” in Menu, this mode is always activated.
2- 2. Panel Maintenance-2 mode
This mode can reduce “image retention” caused by degeneration of
OLED light emission elements. It revise the current for each cell.
(Condition for activating Panel Maintenance-2 mode)
1. Whenever TV operating time passes total 1000(#) hours or more,
this mode can be activated once.
2. When you select “Panel Maintenance” in Menu, this mode is always activated.
(#) : It is changed from Last year EZ series (=1500 hours)
0XXXX-0YYYY-0AAAA-0BBBB
The execution history of Panel Maintenance
X: Starting Count of Panel Maintenance-1(Hexadecimal)
Y: Completed Count of Panel Maintenance-1 (Hexadecimal)
A: Starting Count of Panel maintenance-2 (Hexadecimal)
B: Completed Count of Panel Maintenance-
Note: The execution history(Starting / Completed Count) of
Panel Maintenance function can be confirmed in
Main Menu > Help > System Information > Status8.
80
Page 81
Panel Maintenance function-2
仕様概略
3. How to activate the Panel Maintenance function
3-1. Flow of Panel Maintenance-1 mode (It takes about 10 min.):
The Panel Maintenance-1 mode is automatically activated when the TV is turned off with remote control
after watching TV for 3 hours or more.
OLED
1. TV turns off by remote control after watching TV for total 3 hours or more
Watching TV
For total 3 hours
Turn off by
remote control
Automatically start
without any notification.
Panel Maintenance-1mode
(for about 10 minutes)
Finish
(Watching time is reset)
*2
(No display)
LED: Orange lighting
Back to normal standby
LED: Red lighting (or Orange）
*North & Latin America models(U/C/X/W) No lighting
*1: When TV operating time after Panel Maintenance-1 mode
is within 3 hours, this mode is not activated.
*2: When the TV is turned off with mains power switch,
this mode is not activated.
*1
The customer don’t notice about this mode. (Just LED is orange lighting.)
81
Page 82
Panel Maintenance function-3
仕様概略
OLED
3-2. Flow of Panel Maintenance-2 mode (It takes about 80 min.) :There are 2 flows. One is executing manually from Menu.
The other is automatically activated when the TV is turned off with remote control after watching TV for 1000(#) hours or more.
If you have customer complaints for “image retention”, please activate the Panel Maintenance in Menu.
1. Menu of Panel Maintenance
Main Menu Picture Screen Settings
“Panel Maintenance”
Panel Maintenance-1 mode
(for about 10 minutes)
1 hour later
(Because of Panel cooling)
Panel Maintenance-2 mode
(for about 1minute)
(No display)
Power LED: Orange lighting
(screen)
White thin line
LED: Orange lighting
2. TV turns off by remote control after watching TV
for total 1,000(#) hours or more
Watching TV
For total 1000(#) hours
TV turns off by remote control
The Notification is displayed.
(Note)
*1: When the TV is turned off with mains power
*2: If checked “Don’t start… “, this OSD isn’t
Scan
*3: When the TV is turned on during activating
*2
TV turns off
automatically
switch, this mode is not activated.
displayed when TV turns off until TV is
operated for 1000(#) hours again.
this mode, this mode is stopped and cancelled.
*1
Finish
If power on after complete.
Panel maintenance
is complete.
(Watching time is reset)
(Power on next)
Panel maintenance has been
interrupted. Please start again from
the Panel Maintenance menu.
# : It is changed from Last year EZ series (=1500 hours)
Back to normal standby
LED: Red lighting (or Orange）
*North & Latin America models(U/C/X/W) No lighting
If power on before complete. *3
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Other Protect Function for Image Retention
仕様概略
>To avoid image retention, the screen saver may be activated (OLED logo moves) or
the on-screen message may move after a few minutes if no signals are sent or
no operations are performed.
>To avoid image retention, the screen may become dim when the motionless image is
displayed.
The brightness of the screen returns to the previous level when the active image is displayed.
>The screen image is shifted by dot unit automatically when the “Pixel Orbiter”
OLED
in setting menu is set to On.
(Main Menu Picture Screen Settings Pixel Orbiter : Shipping condition is On.)
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Service Information of OLED TV (Bottom Screw) -1
OLED
It is necessary to pay attention to handling to prevent OLED panel bending. We recommend standing position with pedestal
when repairing. Some screws are placed on the bottom of the rear cover, it is difficult to remove them when standing with
pedestal. We propose how to remove bottom screws in next page.
1. Specifications of Bottom screws
Screw Type
Cross recessed hexagon
head screw
Specification of
Bottom screws
About 61 - 72mm
8 mm
Screw position
2 positon
The bottom of the rear cover
2 mm
Working space
The surface of
the table
Working space : TH/TC-**FZ1000 / TX-**FZ950 = 72mm
TH/TC-**FZ950 / TX-**FZ800 = 61mm
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Service Information of OLED TV (Bottom Screw) -2
2. How to enlarge working space to remove the bottom screws
TH/TC-**FZ1000 / TX-**FZ950 TH/TC-**FZ950 / TX-**FZ800
Shift FZ950 to the edge of the table Shift FZ800 to the edge of the table
Example1
(use normal driver)
Shift
OLED
Shift
Example2
(use normal driver)
Example3
Table
Insert objects that become step between unit and the table. Insert objects that become step between unit and the table.
UP UP
Table
Use ratchet type driver/wrench
inside diameter 8mm
under
50mm
Table
UP UP
Table
outside diameter max 12mm
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Service Information (Blindfold Cap of Screw)
The FZ series use the blindfold caps of the screws on the rear cover for 360 degree viewing design.
To remove these caps from the rear cover, a flat-bladed screwdriver is necessary.
OLED
Blindfold cap
1. Number of use and Use position
Number of Blindfold cap : N=12
65inch FZ series
2. Specification of a blindfold cap
Blindfold cap
8mm
Gap for removing (D-cut)
Notes when caps are assembled in the rear cover
1. Position of D-cut : Lower (Refer to above photo)
2. The surface of the cap must be flush with the rear cover.
min. 0.9mm
3. How to remove the blindfold cap
a blindfold cap
Gap(D-cut)
Number of Blindfold cap : N=10
55inch FZ series
a flat-bladed screwdriver
1. Prepare a flat-bladed screwdriver which can
be inserted in the gap for removing
2. Insert this flat-bladed screwdriver in the gap(D-cut ).
3. Remove a blindfold cap
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Package of the OLED Panel Module
The package is same as that of product for avoiding the damage. Please take care about
handling of panel module same as product.
The dummy rear cover is assembled, but it is only for protect purpose. Don’t use it for
repair parts. The base metal parts are also assembled, it can be apply to repair .
*There is a possibility that this specification will be changed by each factory.
Same as product package
OLED
Metal
Parts
PANEL_PROTECTION_SHEET
Note :
There is a PANEL_PROTECTION_SHEET for
TH/TC-**FZ1000 / TX-**FZ950 (speaker separated model only).
After replacing panel, please peel off.
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