Panasonic 2018 Schematic
Order No. ITD1803902GE
2018 - LCD TV / OLED TV Model No. LCD-201803
OLED-201806
Ver. 2.0
Circuit Operation and Troubleshoot
1
Revision History
Version |
Issued/Revised |
Revised content |
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date |
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Ver. 1.0 |
27th. Mar. 2018 |
First version |
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Ver. 2.0 |
11th. Jun. 2018 |
Add new models (except OLED) |
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P.5, 11, 16, 19, 51: Add new models |
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P.20, 55-57, 76, 77: Add pages for new models |
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Add OLED models information |
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P.5, 11, 16, 19, 29, 38, 42, 49, 51, 70: Add OLED models |
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P.10, 20, 27, 28, 46, 47, 61-63, 68, 71, 78-87: Add pages for OLED models |
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2
INDEX
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
3
1. Board Layout
4
Board Layout -1
49/43/32/24FS***/F4**, |
55/49/43/40FX6** |
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50FS*** |
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40FS***/F4** (Europe and Oceania) |
65/55/49/43/40FX7**/FX8** |
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65FX6**, 75FX7**/FX8** |
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55FZ** |
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LDP |
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K |
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K |
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K |
The presence of GK board is depend on the model and region.
40FS***/F4** (Latin and Asia) |
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65FZ*** |
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LDP |
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G |
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PB |
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G |
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K |
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K |
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5 |
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K |
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Board Layout -2
( A+P ) |
( 32F400 ) |
P3
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A02 |
P |
A |
A15 |
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A10 |
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A12 |
AC input
Speaker Speaker
K10
(T-CON) |
K |
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Not repairable, |
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One of the panel module |
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Board Name |
Function |
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A-Board |
Main Board |
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P-Board |
Power supply, Backlight Drive, Power key, Control key |
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K-Board |
Remote Receiver, Power LED |
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6
Board Layout |
-3 |
( A+P ) |
( 55FX700 ) |
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A02 |
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P3 |
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P |
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A |
A16 |
JK8705 |
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P2 |
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A10 |
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A12 |
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Bluetooth |
GK |
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Module |
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AC input |
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Speaker |
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Speaker |
K10 |
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WiFi Module |
(T-CON) |
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Not repairable, |
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One of the panel module |
K
Board Name |
Function |
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Board Name |
Function |
A-Board |
Main Board |
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K-Board |
Remote Receiver, Power LED |
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P-Board |
Power supply, Backlight Drive |
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GK-Board |
Power key, Control key |
7
Board Layout -4
( A+LDP ) |
( 40F400 ) |
DC input, Connect the AC adapter
P2 |
A02 |
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LDP |
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A |
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A11 |
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GK |
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LDP1 |
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A10 |
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Speaker |
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Speaker |
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(T-CON) |
K10 |
K |
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Not repairable, |
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One of the panel module
Board Name |
Function |
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A-Board |
Main Board |
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P-Board |
Power supply, Backlight Drive, Power key, Control key |
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K-Board |
Remote Receiver, LED |
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8
Board Layout -5
( A+P+LDP ) |
( 75FX750 ) |
P
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A15 |
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LDP3 |
LDP LDP2 |
A16 |
A |
P2 |
LDP5 |
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A02 |
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LDP4 |
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JK8705 |
AC input
A12
A10
Speaker
K10
WiFi Module |
K |
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Not repairable, |
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Speaker |
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One of the panel module |
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(T-CON) |
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Not repairable, |
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Bluetooth |
One of the panel module |
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Module |
Board Name |
Function |
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Board Name |
Function |
A-Board |
Main Board |
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LDP-Board |
Power supply for Backlight Drive |
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P-Board |
Power supply for Signal Process |
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K-Board |
Remote Receiver, Power LED |
9
Board Layout -6
(A+P+PB)
OLED
( 65FZ series )
There is no PB board in 55FZ series
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P6 |
PB6 |
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P5 |
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PB |
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A15 |
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GK4 |
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P2 |
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PB4 |
A16 |
A |
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GK |
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P |
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A02 |
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PB5 |
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JK8705 |
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CN11 |
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CN10 |
A10 |
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(T-CON) |
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A12 |
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AC input |
CN5 |
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Not repairable, |
CN6 |
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One of the panel module |
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WiFi Module |
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Bluetooth Module |
K10 |
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K |
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Board Name |
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Function |
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Board Name |
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Function |
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A-Board |
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Main Board |
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GK-Board |
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Key |
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P-Board |
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Power supply for Signal Process |
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K-Board |
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Remote Receiver, Power LED |
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PB-Board |
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Power supply for Panel |
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10 |
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(The Speaker |
of FZ1000 is separated.) |
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Board Structure
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F4** |
FS4**/5**/6** |
FX5**/6** |
FX7**/8** |
FZ*** |
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(4K) |
(4K) |
(OLED) |
24inch |
A+P |
A+P |
--- |
--- |
--- |
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32inch |
A+P |
A+P |
--- |
--- |
--- |
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40inch |
A+P |
A+P |
A+P |
A+P |
--- |
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(Oceania) |
(Europe/Oceania) |
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A+LDP |
A+LDP |
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+DC adaptor |
+DC adaptor |
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(Asia/Latin) |
(Asia/Latin) |
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43inch |
A+P |
A+P |
A+P |
A+P |
--- |
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49inch |
A+P |
A+P |
A+P |
A+P |
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50inch |
--- |
A+P+LDP |
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--- |
--- |
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55inch |
--- |
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A+P |
A+P |
A+P |
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65inch |
--- |
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A+P+LDP |
A+P |
A+P+PB |
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75inch |
--- |
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A+P+LDP |
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Except K, GK boards |
11 |
2. Signal Processing
2-1. Signal Flow
12
Video/Audio Signal Process - 1
F4## series
OPT_out
USB1 |
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Antenna |
IC68** |
terminal |
De-Modulation |
AV |
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Component |
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HDMI1/2 |
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A
IC4900
Audio AMP
IC8000 (MT5561)
Resize
IP conv.
OSD
LVDS Data
to LCD Panel
The input terminals are different by the models or countries. |
13 |
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Video/Audio Signal Process - 2
FS### series |
(*)Headphone |
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OPT_out |
WiFi 
(*)Bluetooth
USB1/2 
Antenna |
TU690* |
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IC68** |
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terminal |
TUNER |
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De-Modulation |
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AV 
Component
LAN 
CI-slot
(only Europe)
HDMI1/2/3 
A
IC3400 or 4900
Audio AMP
IC8000 (Peaks LD11 or MT5581P)
Resize
IP conv.
OSD
LVDS Data
to LCD Panel
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14 |
(*) The input terminals are different by the models or countries. |
Video/Audio Signal Process - 3
FX6## / FX700-740 series
(*)Headphone
OPT_out
WiFi 
(*)Bluetooth (Only FX700)
USB1 
USB2
IC8701
USB3 |
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(USB HUB) |
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(Only FX700) |
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(Only FX700) |
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IC68** |
Antenna |
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TU670* |
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De-Modulation |
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terminal |
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TUNER |
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Component
LAN 
CI-slot
(only Europe)
HDMI1/2/3/
(*)HDMI4
A
IC3400
Audio AMP
IC8000 |
to LCD Panel |
(MT5811Q) |
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Resize |
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IP conv. |
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OSD |
( V by One format ) |
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(*) The input terminals are different by the models or countries. |
15 |
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Video/Audio Signal Process - 4
FX750-800, FZ### series |
(*)Headphone |
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OPT_out |
WiFi |
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Bluetooth |
IC8705 |
USB2 |
(USB HUB) |
USB1 |
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USB3(3.0) |
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SD card (only TX/TC -FZ series
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IC68** |
Antenna |
TU670* |
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De-Modulation |
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TUNER |
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terminal |
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Component
LAN 
CI-slot
(only Europe)
HDMI1/2/3/4
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 )
(*) The input terminals are different by the models or countries. |
16 |
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2-2. Troubleshoot of Picture Problem
17
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.
2) If NG, indication is shown.
# A board defective
3) If All OK, it shifts to picture and sound test.
*) F400/410 series do not support.
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Yes |
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No |
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1.Antenna level low |
TV unit defective. |
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2.Connection mistake |
(A board, Panel or |
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3.Input devices NG |
Speaker) |
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4.Input select mistake |
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A
LCD/OLED Panel
Module
IC8000 |
T-CON |
LCD Panel |
(Peaks/MTK )
Test PatternResize
IP conv.
18
Troubleshoot for Picture Problem
<LCD Panel Test Mode> :When abnormal picture is displayed, troubleshoot by the test pattern in LCD module.
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).
Some patterns are automatically changed. The patterns are depend on the LCD panel.
Abnormal picture, Bar/line/dot, Unevenness, 
Noise…
v. line
h. line
many lines
A
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Dot or |
mura |
Color abnormal
Check the “Panel Test
Mode”
Test pattern
OK
Replace A board (#1)
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Confirm(Clean) the flat |
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cable connection |
Replace LCD Panel module |
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(between A board and T-CON |
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Test pattern |
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also NG |
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board of LCD Panel) |
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A |
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LCD/OLED Panel |
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Module |
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IC8000 |
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Flat cable |
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T-CON |
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LCD Panel |
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Test |
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(Peaks/MTK ) |
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Resize |
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Pattern |
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IP conv. |
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(#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 |
19 |
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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
6.Remove USB Memory from TV.
7.Turn off the TV.
Note: New folder “user_setup” will be created in USB Memory
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: 1. Depending on the failure of boards, function does not work. |
20 |
2. This function can be effective among the same model numbers. |
System Information
You can check some information in Help menu. MENU 
Help 
System information
System Information |
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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 |
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These list is different from the models.
(There are lower items for leader models.)
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 (2nd time after shipping)
0 = SOS history (1st time 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
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 |
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00001(Hex)= 1 time |
:Completed Count of Panel Maintenance-2 |
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HDAVI version : 5 = Viera Link version |
21 |
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3. Power Supply
3-1. Power Board Structure
22
Power Board Structure -1 ( P Board only )
< P >
( Models are refer to P.11 )
PFC
IC
HO
Power
IC LO
P
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
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LED |
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Drive |
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IC |
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A
PWM
BL-ON
16V
16V
REG
STB5V
23
Power Board Structure -2 ( LDP Board only )
< LDP > ( only TH/TC-40F4##/40FS### , except Europe/Oceania )
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AC Adaptor |
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19.5V |
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AC |
DC19.5V |
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LDP
VLED
Anode
4 ch
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(Backlight) |
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DCDC LED |
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Cathode |
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A |
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IC |
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PWM |
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DCDC
16V
TV_SUB-ON
DCDC 
STB5V
24
Power Board Structure -3 ( P+LDP Boards )
< P + LDP > ( only 50FS500** )
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VLED |
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Anode |
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4 ch |
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PFC |
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DCDC |
LED |
Cathode |
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Drive |
(Backlight) |
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IC |
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HO |
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A |
Power |
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PWM |
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IC |
LO |
LDP |
BL-ON |
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16V |
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16V |
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DCDC |
STB5V |
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25 |
Power Board Structure -4 ( P+LDP Boards )
< P + LDP > ( only 65FX6**/75FX7** )
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
DCDC
IC
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HO |
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IC |
LO |
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LDP |
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16V
LED Drive IC
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VLED1 |
Anode |
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1 ch |
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VLED2 |
Cathode |
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Anode |
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2 ch |
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1 ch |
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Cathode |
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(Backlight) |
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2 ch |
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A |
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PWM |
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BL-ON |
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P
16V
DCDC 
STB5V
26
Power Board Structure -5 ( P Boards )
< P > ( only 55FZ** )
(TNPA6698)
IC7500HO
Power LO
IC
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PFC |
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IC7301HO |
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P |
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Power |
LO |
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IC |
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OLED
There is no drive circuit for backlight
(T-CON)
P3
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24V |
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24V |
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12V
EVDD_ON (BL-ON)
P2
16V |
REG |
16V
TV_SUB-ON
REG
STB5V A
27
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