Panasonic LCD-201803 Quick start guide

Panasonic Corporation 2018
Unauthorized copying and distribution is
a violation of law.
c
Model No. LCD-201803
Order No. ITD1803902GE
1
Circuit Operation and Troubleshoot
2018 - LCD TV
Ver. 1.0

Revision History
Version Issued/Revised
date
Revised content
Ver. 1.0 29th. Mar. 2018 First version
2

3
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.Rear Cover Disassemble and Assemble

1. Board Layout
4

Board Layout -1
5
The presence of GK board is depend on the model and region.
A
K
P
A
K
LDP
G
K
49/43/32/24FS***/F4**, 40FS***/F4** (Europe and Oceania)
40FS***/F4** (Latin and Asia)
55/49/43/40FX6**/FX7**
A
K
P
50FS***
65FX6**, 75FX7**
LDP
G
K

Board Name Function
A-Board Main Board
P-Board Power supply, Backlight Drive, Power key, Control key
K-Board Remote Receiver, Power LED
A02
A12
A10
P3
PA
AC input
K10
Speaker Speaker
K
A15
6
Board Layout -2
( 32F400 )
( A+P )
(T-CON)
Not repairable,
One of the panel module

A10
A02
A12
P
A
AC input
K10
WiFi Module
Speaker Speaker
K
(T-CON)
Not repairable,
One of the panel module
A16
P2
7
Board Layout -3
( 55FX700 )
( A+P )
P3
GK Bluetooth
Module
Board Name Function
A-Board Main Board
P-Board Power supply, Backlight Drive
Board Name Function
K-Board Remote Receiver, Power LED
GK-Board Power key, Control key
JK8705

Board Name Function
A-Board Main Board
P-Board Power supply, Backlight Drive, Power key, Control key
K-Board Remote Receiver, LED
A02
A10
P2
A
DC input,
Connect the
AC adapter
K10
Speaker Speaker
K
A11
8
Board Layout -4
( 40F400 )
( A+LDP )
GK LDP1
(T-CON)
Not repairable,
One of the panel module
LDP

A02
A16
A12
A10
P2
P
A
AC input
K10
WiFi Module
Speaker Speaker
K
(T-CON)
Not repairable,
One of the panel module
LDP5
9
Board Layout -5
LDP
LDP3 LDP2
Board Name Function
A-Board Main Board
P-Board Power supply for Signal Process
Board Name Function
LDP-Board Power supply for Backlight Drive
K-Board Remote Receiver, Power LED
( 75FX750 )
( A+P+LDP )
LDP4
Bluetooth
Module
Not repairable,
One of the panel module
A15
JK8705

F4** FS5** FX6**
(4K)
FX7**
(4K)
24inch A+P --- ---
32inch A+P A+P --- ---
40inch A+P
(Oceania)
A+P
(Europe/Oceania)
A+P A+P
A+LDP
+DC adaptor
(Asia/Latin)
A+LDP
+DC adaptor
(Asia/Latin)
43inch A+P A+P A+P
49inch A+P A+P A+P
50inch --- A+P+LDP --- ---
55inch --- --- A+P A+P
65inch --- --- A+P+LDP
75inch --- --- --- A+P+LDP
10
Except K, GK boards
Board Structure

11
2. Signal Processing
2-1. Signal Flow

A
AV
Component
Antenna
terminal
OPT_out
IC8000
(MT5561)
Resize
IP conv.
OSD
HDMI1/2
IC68**
De-Modulation
The input terminals are different by the models or countries.
LVDS Data
to LCD Panel
12
Video/Audio Signal Process - 1
F4## series
USB1
IC4900
Audio AMP

A
AV
Component
Antenna
terminal
WiFi
OPT_out
IC8000
(Peaks LD11
or MT5581P)
Resize
IP conv.
OSD
HDMI1/2/3
(*)Bluetooth
TU690*
TUNER
(*)Headphone
IC68**
De-Modulation
CI-slot
(only Europe)
(*) The input terminals are different by the models or countries.
LVDS Data
to LCD Panel
13
Video/Audio Signal Process - 2
FS### series
USB1/2
LAN
IC3400 or 4900
Audio AMP

A
Component
Antenna
terminal
WiFi
OPT_out
IC8000
(MT5811Q)
Resize
IP conv.
OSD
(*)Bluetooth
TU670*
TUNER
USB1
USB3
(*) The input terminals are different by the models or countries. 14
Video/Audio Signal Process - 3
LAN
CI-slot
(only Europe)
USB2 IC8701
(USB HUB)
IC68**
De-Modulation
HDMI1/2/3/
(*)HDMI4
FX6## / FX700-740 series
to LCD Panel
( V by One format )
IC3400
Audio AMP
(*)Headphone
(Only FX700)
(Only FX700)
(Only FX700)

A
Component
Antenna
terminal
WiFi
OPT_out
IC8000
(MT5811P)
Resize
IP conv.
OSD
Bluetooth
TU670*
TUNER
USB2
(*)Headphone
USB3(3.0)
(*) The input terminals are different by the models or countries. 15
Video/Audio Signal Process - 4
LAN
CI-slot
(only Europe)
USB1
IC8705
(USB HUB)
IC68**
De-Modulation
HDMI1/2/3/4
to LCD Panel
IC9000
(MFC19)
Frame Rate
Color space
Convert
( V by One format )
FX750-780 series
IC3400
Audio AMP

16
2-2. Troubleshoot of 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).
Troubleshoot for Picture Problem
17
Some patterns are
automatically changed.
The patterns are depend
on the LCD panel.
A
IC8000
(Peaks/MTK )
Resize
IP conv.
LCD Panel
LCD Panel Module
T-CON
Test
Pattern
Check the “Panel Test
Mode”
Test pattern
OK
Replace LCD Panel module
Test pattern
also NG
Replace A board
Confirm(Clean) the flat
cable connection
(between A board and T-CON
board of LCD Panel)
Flat cable
Abnormal
picture,
Bar/line/dot,
Unevenness,
Noise…

<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
Yes No
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.
(OK)
1.Antenna level low
2.Connection mistake
3.Input devices NG
4.Input select mistake
TV unit defective.
(A board, Panel or
Speaker)
*) F400/410 series do not support.
Troubleshoot for Picture/Sound Problem
18
A
IC8000
(Peaks/MTK )
Resize
IP conv.
LCD Panel
LCD Panel Module
T-CON
Test
Pattern

You can check some information in Help menu.
MENU Help System information
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= Starting Count of Panel Maintenance-1
(for OLED) 00014= Completed Count of Panel Maintenance-1
00001= Starting Count of Panel Maintenance-2
00001= Completed Count of Panel Maintenance-2
HDAVI version : 5 = Viera Link version
System Information
19
These list is different from the models.
(There are lower items for leader models.)
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

20
3. Power Supply
3-1. Power Board Structure