Panasonic TH-55GX800S Schematic

ORDER NO. MTV1901435CE

LED TV

Model No. TH-55GX800S

Chassis: KM48
Destination: SINGAPORE
TABLE OF CONTENTS
1.1. General Guidelines---------------------------------------- 3
1.1.1. Leakage Current Cold Check ---------------------- 3
1.1.2.
Leakage Current Hot Check (See Figure 1.)
2 Warning-------------------------------------------------------------- 4
2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices---------- 4
2.2. About lead free solder (PbF)---------------------------- 4
3.1. Service Hint ------------------------------------------------- 5
4 Specifications ----------------------------------------------------- 6 5 CS Maintenance Menu------------------------------------------ 8
5.1. How to enter into CS Maintenance Menu ----------- 8
5.1.1. Purpose ------------------------------------------------- 8
5.1.2. Key command ----------------------------------------- 8
5.1.3. How to exit---------------------------------------------- 8
5.2. Repack ------------------------------------------------------- 8
5.3. EDID Clock -------------------------------------------------- 9
5.4. USB HDD Drive Check----------------------------------- 9
5.5. White Balance Adjustment -----------------------------10
PAG E PAG E
5.6. Hotel mode ------------------------------------------------ 11
5.6.1. Purpose ------------------------------------------------ 11
5.6.2. Access command to the Hotel mode setup
---- 3
5.7. Data Copy by USB Memory --------------------------- 12
6 Troubleshooting Guide --------------------------------------- 15
6.1. Check of the IIC bus lines------------------------------ 15
6.2. Power LED Blinking timing chart --------------------- 15
6.3. Method of detecting SOS ------------------------------ 16
6.4. LCD Panel test mode ----------------------------------- 16
6.5. No Power--------------------------------------------------- 17
7 Disassembly and Assembly Instructions--------------- 18
menu --------------------------------------------------- 11
5.6.3. To exit the Hotel mode setup menu------------- 11
5.6.4. Explain the Hotel mode setup menu ----------- 11
5.7.1. Purpose ------------------------------------------------ 12
5.7.2. Preparation-------------------------------------------- 12
5.7.3. Data copy from TV set to USB Memory ------- 13
5.7.4. Data copy from USB Memory to TV set ------- 14
6.1.1. How to access --------------------------------------- 15
6.1.2. Screen display --------------------------------------- 15
© Panasonic Corporation 2019.
TH-55GX800S
7.1. Bracket Fitting -------------------------------------------- 18
7.2. PCB Fixing ------------------------------------------------- 20
7.3. Speaker Fixing -------------------------------------------- 21
7.4. Back Cover - Screw ------------------------------------- 22
7.5. Handling SPEC ------------------------------------------- 23
8 Measurements and Adjustments -------------------------- 24
8.1. Voltage chart of A-board-------------------------------- 24
8.2. Voltage chart of P-board-------------------------------- 24
9 Block Diagram --------------------------------------------------- 25
9.1. Main Block Diagram ------------------------------------- 25
10 Wiring Connection Diagram --------------------------------- 26
10.1. Wire Dressing 1------------------------------------------- 26
10.2. Wire Dressing 2------------------------------------------- 27
11 Schematic Diagram--------------------------------------------- 28 12 Printed Circuit Board ------------------------------------------ 51 13 Exploded View and Replacement Parts List -----------57
2
TH-55GX800S

1 Safety Precautions

1.1. General Guidelines

1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
4. When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials.
5. When wiring units (with cables, flexible cables or lead wires) are supplied as repair parts and only one wire or some of the wires have been broken or disconnected, do not attempt to repair or re-wire the units. Replace the entire wiring unit instead.
6. When conducting repairs and servicing, do not twist the Faston connectors but plug them straight in or unplug them straight out.

1.1.1. Leakage Current Cold Check

1. Unplug the AC cord and connect a jumper between the two prongs on the plug.
2. Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be 8.5Mohm to 13Mohm. When the exposed metal does not have a return path to the chassis, the reading must be .

1.1.2. Leakage Current Hot Check (See Figure 1.)

1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5kohm, 10 watts resistor, in parallel with a
0.15F capacitors, between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1.
3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.
6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. In case a measurement is outside of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer.
Figure 1
3
TH-55GX800S

2Warning

2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor [chip] components. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as [anti-static (ESD protected)] can generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise ham less motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).

2.2. About lead free solder (PbF)

Note: Lead is listed as (Pb) in the periodic table of elements. In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu). That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.
This model uses Pb Free solder in its manufacture due to environmental conservation issues. For service and repair work, wed suggest the use of Pb free solder as well, although Pb solder may be used.
PCBs manufactured using lead free solder will have the PbF within a leaf Symbol PbF stamped on the back of PCB.
Caution
Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40 °C) higher. Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).
Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C). If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before applying Pb solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.
After applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto the opposite side. (see figure below)
4

3 Service Navigation

3.1. Service Hint

TH-55GX800S
Board Name Main Device Remarks
A BOARD TUN, OFDM, ADV, LD4, STBY EEP Repairable
P BOARD Power Supply Repairable
GK BOARD Function SW Repairable
K BOARD LED/RM/CATS Repairable
5
TH-55GX800S

4 Specifications

Dimensions (W H D) 1231 mm 769 mm 218 mm (With Pedestal)
1231 mm 714 mm 44 mm (TV only)
Mass
Power source AC Auto 110-240 V, 50 / 60 Hz Rated power consumption 171 W Standby power consumption 0.50 W Visible screen size (diagonal) 139 cm Display resolution 3840 (W) 2160 (H) Panel LED backlight Liquid Crystal Display Sound
Speaker output 20 W (10 W + 10 W) Headphones 3.5 mm stereo mini jack 1
Connection terminals
AV IN VIDEO Pin jack 1, 1.0 V[p-p] (75 ) (COMPONENT / VIDEO) AUDIO L - R Pin jack 2, 0.5 V[rms]
HDMI 1 / 2 / 3 input TYPE A Connectors
This TV supports “HDAVI Control 5” function. ETHERNET 10BASE-T / 100BASE-TX USB 1 / 2 / 3
DIGITAL AUDIO OUT PCM / Dolby Digital, Fibre optic
Receiving systems / Band name 7 SYSTEMS FUNCTION
Receiving channels (Analogue TV)
VHF BAND 2 - 12 (PAL / SECAM B, K1)
UHF BAND 21 - 69 (PAL G, H, I / SECAM G, K, K1)
CATV S1 - S20 (OSCAR)
Aerial input VHF / UHF Operating Conditions Temperature : 0°C - 40°C
Built-in wireless LAN
19.5 Net (With Pedestal)
19.0 Net (TV only)
Y 1.0 V[p-p] (including synchronisation) P
B/CB, PR/ CR
HDMI1 / 3: 4K, Content Type, Deep Colour, x.v.Colour HDMI2: 4K, Content Type, Audio Return Channel, Deep Colour, x.v.Colour
USB 1: DC 5 V, Max. 900 mA [SuperSpeed USB (USB 3.0)] USB 2 / 3: DC 5 V, Max. 500 mA [Hi-Speed USB (USB 2.0)]
Digital TV
7 MHz VHF / 8 MHz UHF free-to-air TV broadcast reception
28 - 69 (PAL B AUST.) 13 - 57 (PAL D, K) 13 - 62 (NTSC M Japan) 14 - 69 (NTSC M USA)
1 - 125 (USA CATV)
C13 - C49 (JAPAN)
S21 - S41 (HYPER)
Z1 - Z37 (CHINA)
Humidity : 20% - 80% RH (non-condensing)
Standard compliance and Frequency range*
IEEE802.11a/n/ac
5.15 GHz - 5.35 GHz, 5.47 GHz - 5.85 GHz IEEE802.11b/g/n
2.400 GHz - 2.4835 GHz
±0.35 V[p-p]
1 PAL B, G, H 2PAL I 3PAL D, K 4 SECAM B, G 5 SECAM D, K 6 SECAM K1 7
NTSC M (NTSC 3.58 / 4.5 MHz)
0 - 12 (PAL B AUST.)
1 - 9 (PAL B N.Z.) 1 - 12 (PAL / SECAM D) 1 - 12 (NTSC M Japan) 2 - 13 (NTSC M USA)
5A, 9A (AUST.)
Reception of broadcast transmissions and
Playback from Video Cassette Tape Recorders
1
6
TH-55GX800S
Security
WPA2-PSK (TKIP/AES) WPA-PSK (TKIP/AES) WEP (64 bit/128 bit)
2
Bluetooth wireless technology*
*1: The frequency and channel differ depending on the country. *2: Not all the Bluetooth compatible devices are available with this TV. Up to 5 devices can be used simultaneously.
Standard Compliance
Bluetooth 4.2
Frequency Range
2.402 GHz - 2.480 GHz
Note
Design and Specifications are subject to change without notice. Mass and Dimensions shown are approximate.
For information about the open source software, refer to [eHELP] (Search by Purpose > Read First > Before use > Licence).
7
TH-55GX800S

5 CS Maintenance Menu

5.1. How to enter into CS Maintenance Menu

5.1.1. Purpose

After exchange parts, check and adjust the contents of adjustment mode. While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds.
Note:
CS Maintenance Menu can not be entered when 3D signal input. Input 2D signal to enter CS Maintenance Menu.

5.1.2. Key command

Press the Cursor key [Up/Down] on the remote control to select the functions.

5.1.3. How to exit

Press the [EXIT] button on the remote control.

5.2. Repack

1. Select [OPT] in CS Maintenance Menu.
1. Press [OK] button or Cursor key [Right] on the remote control.
Note:
Press the [Exit] button or the [Return] button on the remote control.
8

5.3. EDID Clock

1. Select [EDID CLK] in CS Maintenance Menu.
2. Press [OK] button or Cursor key [Right] on the remote control.
Exit:
Press the [Exit] button or the [Return] button on the remote control.

5.4. USB HDD Drive Check

1. Select [DRV CHECK] in CS Maintenance Menu.
2. Press [OK] button or Cursor key [Right] on the remote control.
TH-55GX800S
Exit:
Press the [Return] button on the remote control.
9
TH-55GX800S

5.5. White Balance Adjustment

After LCD PANEL or A-Board is replaced and repaired, perform [White balance adjustment] in case of necessity for test / check ([White balance adjustment] is not required basically).
1. Select [W/B ADJ] in CS Maintenance Menu.
2. Press [OK] button on the remote control.
Note for performing [White balance adjustment]
Make a note for the setting values before changing if the settings of [R-GAIN], [B-GAIN] and [G-GAIN] in [WB-ADJ] will be changed.
3. Press the cursor key [Up/Down] on the remote control to change the data value, and press [OK] button on the remote control to store the value for this model.
COLOR TEMP : Press the [Option] button of the remote control to change the color temperature. (COOL/NORMAL/WARM/ TUNING)
Exit:
Press the [Return] button on the remote control.
10
TH-55GX800S

5.6. Hotel mode

5.6.1. Purpose

Restrict a function for hotels.

5.6.2. Access command to the Hotel mode setup menu

In order to display the Hotel mode setup menu, please enter the following command (within 2 seconds). [TV]: Vol.[Down] + [REMOTE] : AV (3 times)
Then, the Hotel mode setup menu is displayed.

5.6.3. To exit the Hotel mode setup menu

Switch off the power with the [POWER] button on the main unit
or the [POWER] button on the remote control.

5.6.4. Explain the Hotel mode setup menu

Item Function
Hotel Mode Select hotel mode On/Off
Initial INPUT Select input signal modes.
Initial POS Select programme number.
Initial VOL Level Adjust the volume when each time power is
Maximum VOL Level
Button Lock Select local key conditions.
Remote Lock Select remote control key conditions.
Private Information Select private information for VIERA Cast is Keep
Set the input, when each time power is switched on. Selection :
Off, Analogue TV, Digital TV, AV, HDMI1, HDMI2, HDMI3
Off: give priority to a last memory.
Selection : Off/0 to 99
Off: give priority to a last memory.
switched on. Selection Range : Off/0 to 100
Off: give priority to a last memory.
Adjust maximum volume. Range : 0 to 100
Selection : Off/SETUP/MENU
OFF: altogether valid
SETUP: only F-key is invalid
(Tuning guide (menu) can not be selected.)
MENU: only F-key is invalid (only Volume/Mute can be selected.)
Selection : Off/SETUP/MENU
OFF: altogether valid.
SETUP: only Setup menu is invalid.
MENU: Picture/Sound/Setup menu are invalid.
or Reset if Hotel mode is set to [On] when TV power on Selection : Keep/Reset
Keep: private information for VIERA Cast is keep
Reset: private information for VIERA Cast is reset
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TH-55GX800S

5.7. Data Copy by USB Memory

Note:
SD card can not be used for Data Copy.

5.7.1. Purpose

(a) Board replacement (Copy the data when exchanging A-board):
When exchanging A-board, the data in original A-board can be copied to USB Memory and then copy to new A-board.
(b) Hotel (Copy the data when installing a number of units in hotel or any facility): When installing a number of units in hotel or any facility, the data in master TV can be copied to USB Memory and then copy to other TVs.

5.7.2. Preparation

Make pwd file as startup file for (a) or (b) in a empty USB Memory.
1. Insert a 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 following file name for (a) or (b) and press ENTER.
File name:
(a) For Board replacement : boardreplace.pwd (b) For Hotel : hotel.pwd
Note:
Please make only one file to prevent the operation error. No any other file should not be in USB Memory.
12

5.7.3. Data copy from TV set to USB Memory

1. Turn on the TV set.
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 a following password for (a) or (b) by using remote control. (a) For Board replacement : 2770 (b) For Hotel : 4850 Data will be copied from TV set to USB Memory. It takes around 2 to 6 minutes maximum for copying.
4. After the completion of copying to USB Memory, remove USB Memory from TV set.
5. Turn off the TV set.
Note:
Following new folder will be created in USB Memory for data from TV set. (a) For Board replacement : user_setup (b) For Hotel : hotel
TH-55GX800S
13
TH-55GX800S

5.7.4. Data copy from USB Memory to TV set

1. Turn on the TV set.
2. Insert USB Memory with Data to USB terminal. On-screen Display will be appeared according to the Data folder automatically.
3. Input a following password for (a) or (b) by using remote control. (a) For Board replacement : 2771 (b) For Hotel : 4851 Data will be copied from USB Memory to TV set.
4. After the completion of copying to USB Memory, remove USB Memory from TV set. (a) For Board replacement : Data will be deleted after copying (Limited one copy). (b) For Hotel : Data will not be deleted and can be used for other TVs.
5. Turn off the TV set.
Note:
1. Depending on the failure of boards, function of Data copy for board replacement does not work.
2. This function can be effective among the same model numbers.
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TH-55GX800S

6 Troubleshooting Guide

Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timing

6.1. Check of the IIC bus lines

6.1.1. How to access

6.1.1.1. Self-check indication only
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control
for more than 3 seconds.
6.1.1.2. Self-check indication and forced to factory shipment setting
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote
control for more than 3 seconds.

6.1.2. Screen display

6.2. Power LED Blinking timing chart

1. Subject Information of LED Flashing timing chart.
2. Contents When an abnormality occurs, the protection circuit will operate and reset the unit to stand by mode. During this time, the defective block can be identified by the number of blinking times of the Power LED on the front panel of the unit as follow:
Priority Name Factor R_LED Blink
1 BL_SOS SOS from PANEL inverter 1
2 TV_SOS TCON power down 3
3 SOUND_SOS SOS from audio AMP 9
15
TH-55GX800S

6.3. Method of detecting SOS

1. BL_SOS Detection beginning after one second pass from ‘BL_ON’=ON
2. TV_SOS Detection beginning after one second pass from AMP_SHUTDOWN’=ON
3. SOUND_SOS Detection beginning ‘AMP_SHUTDOWN’=ON

6.4. LCD Panel test mode

Purpose:
To find the possible failure point where in LCD Panel or Printed Circuit Board when the abnormal picture is displayed.
How to Enter:
While pressing [VOLUME ( - )] button of the main unit, press [OPTION] button of the remote control three times within 2 seconds.
How to Exit:
Disconnect AC plug from wall outlet.
How to confirm:
If the abnormal picture is displayed, go into LCD Panel test mode to display the several test patterns. And then, judge by the following method. Still abnormal picture is displayed: The cause must be in LCD Panel. Normal picture is displayed: The cause must be in A board.
Remarks:
The test pattern is created by the circuit in LCD Panel. In LCD Panel test mode, this test pattern is displayed unaffected by signal processing for RF or input signal. If the normal picture is displayed, LCD Panel must be okay and the cause of failure must be in A board.
16

6.5. No Power

First check point There are following 2 states of No Power indication by power LED.
1. No lit
2. Red is lit then turns red blinking a few seconds later. (See 6.2.)
TH-55GX800S
17
TH-55GX800S

7 Disassembly and Assembly Instructions

7.1. Bracket Fitting

1. Fix vesa metal to panel and screw.
2. Stick barrier at panel.
3. Assembly pcb at led panel.
18
No Description Qty UOM Remark
1 ASS’Y 55 IN-HOUSE PANEL 1 PC Refer part list
2 SCREW 4 PC 06 ± 1 Kgf.cm
3 LED_PANEL 1 PC
4 LED_PANEL_CASE 1 PC
5 BARRIER_P-PCB_49B1 1 PC
6 BTM_METAL_L_49G 2 PC
7 BTM_METAL_R_49G 2 PC
8 VESA_METAL-49B1 4 PC
TH-55GX800S
19
TH-55GX800S

7.2. PCB Fixing

1. Fix side bracket at pcb.
2. Fix key button at pcb.
3. Fix wifi module at bracket and fix at panel.
No Description Qty UOM Remark
1 KEY BUTTON BRACKET 1 PC
2 BT_ANT_CABLE 1 PC
3 SCREW PC 06 ± 1 Kgf.cm
4 GASKET 1 PC
20

7.3. Speaker Fixing

1. Fix speaker at panel and ensure fully insert.
2. Fix spacer at pcb.
TH-55GX800S
No Description Qty UOM Remark
1 SPEAKER-L 1 PC
2 SPEAKER-R 1 PC
3 PET_TAPE 0.11 MT 110mm 1 pc
4 WIFI_BT_MODULE 1 PC
5 WIFI-BT_MD_BRACKET 1 PC
6 SCREW 2 PC 06 ± 1 Kgf.cm
21
TH-55GX800S

7.4. Back Cover - Screw

1. Fix back cover and screw.
2. Fix latch at back cover.
3. Fix rear cover and terminal cover at back cover.
No Description Qty UOM Remarks
1 SCREW (BC6) 2 PC 06 ± 1 Kgf.cm
2 SCREW (VESA4) 4 PC 06 ± 1 Kgf.cm
3 SCREW_FOR_BOTTOM 5 PC 06 ± 1 Kgf.cm
4 TERMINAL_COVER 1 PC 55GX800
5 LATCH 3 PC 55GX800
6 REAR_COVER 1 PC 55GX800
22

7.5. Handling SPEC

Moving the LCD module
The module should be handle by two people and hold on that top and bottom long side by both hands without module warping. Never handle the module with keeping horizontal position when moving the module in order to avoid internal damage and deformation. Never drop or hit the module.
About the work table
When tightening a screw, retention structures are required not to deform the LCD module.
Moving the TV
Hold the specified parts as shown to stand the TV up and move it with two people.
TH-55GX800S
23
TH-55GX800S

8 Measurements and Adjustments

8.1. Voltage chart of A-board

Set A-Board to a dummy set and check the satisfaction with the specified voltage as following table.
Power Supply Name Test Point Voltage (V) Target Board
STB5V TP2026 5.1V ± 5% ALL
GND TP2006 0V ALL
BL_SOS TP2041 0V ALL
F15V TP2003, TP2005 15.7V ± 5% ALL
GND TP2008, TP2011 0V ALL

8.2. Voltage chart of P-board

Set P-Board to a dummy load and check the satisfaction with the specified voltage as following table.
Output Test Point GND Step 1 Step 2
PFC TP7201 ~ 7203 TP7204 ~ 7206 < 340V 390V ± 15V *HOT
5V TP7417
16V TP7411 ~ 7412 < 1V 16 ± 0.6V
64V
40V 40V ± 6V *DD suffix only
TP7850 ~ 7852 < 1V
TP7407 ~ 7409
5.25 ± 0.2V 5.25 ± 0.2V
68V ± 10V *except DD suffix
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9 Block Diagram

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Region unique
೨ᐕᏅಽ
Diff from predecessor
S16
PANEL Power DCDC
PANEL_VCC_ON
P12
VbyOne 8 Lan e
HTPDN < LOCKN <
BE-IIC
RGB Full 10bit
LED Driver
BL_ON > BL_SOS <
VbyOne 8Lane
4byte Mode
2.94Gbps
For 4k2k x 1
LCD Panel
PWM Backlight Control Maxx4
CPU1.0 GPU1.0
(DDR) S1.2
S3.3
S1.0
(eMMC) STB1.8
STB1.05
S5/ S3.3
STB3.3
eMMC
8GB
Debug
Connector
A-SW
V-SW
ADC [3:1]
RGB/YUV Processor
ADC DAC
ADC
VDOIN
DDR4
Controller
MT5813
UART
UART-DMA( NonUse) UART-DBG(Soft Debug)
IIC
STM-IIC
24MHz
V-by -One
Tx
S1.2/2.5
ATV
Decoder
USB-IF
ETHER-IF
FEAINP FEAINN
Internal CI controller
DEMOD
ADC
[0]
TV Decoder
CVBS VFE VBI/COMB
SAW FLT
Digital CVBS
Digital SIF
Main
Sub
External Video(Analog)
External Video(HDMI)
Dec video
x64bit 2666Mbps
VDAC
Dec Audio
SPI-IF
SCLK SDI SDO CE#1
IIC
BE_IIC0 BE_IIC1 BE_IIC2
uP
XRST
POWER_DET
<TV_SOS AMP/HP MUTE MONITOROUT MUTE
F15V
STB5V
Analog ASIC
OVP SOS
Safety Circuit
<MON_MUTE <SP_HP_MUTE
PWMA
PWM_ENB >
PWMOUT
Common -Reset
Paragon
Reset Circuit
SDVOLC
DDR4
8Gb 2pcs 4Gb 2pcs
MMCCLK MMCCMD
XERST
MMCDAT0-
7
eMMC-IF
MAI
N
SUB
SPI-IF
Rx0
Rx1
Rx2
Rx3
HDMI2.0 HDCP2.2
6G
HDMI2.0 HDCP2.2
6G
HDMI2.0 HDCP2.2
6G
HDMI2.0 HDCP2.2
6G
USB2.0 (Port 0)
USB2.0 (port1)
USB3.0 (Port 2)
USB3.0 (Port3)
LED Information
G_LED_ON >
R_LED_ON >
< KEY3
< KEY1
CONTROL PANEL KEY
REMOCON
Reciever
LUMINANCE
Sensor
RMIN>
AI_SENSOR >
Main SW Soft Control
DDR3
x16
DDR3
x16
DDR3
x16
3
6
DDR3
x16
CVBS
TV Encorder
DTV
Decoder
ATSC
DVB-T/C
ISDB-T
SPDIF
SW
HDMI
Rx
MUX
x4
EDID1
EDID2
EDID3
EDID0
Legacy Trans Port Demux
TLV/MMT stream Demux
B2R
Video MUX
AV De cod er
IMGRSZ
3D GPU
Graphic Processor
MUX
Gamma
Local
Dimming
OSD
Graphics
V-by -One
Tx
HS400 200MHz (DDR)
Scannig PWM
UART
UART-HT(No nUse) UART-PD(TK serial) (ARM Console) UART-BT(uP Debug)
Standby CPU
8bit-CPU Turbo8032
Host CPU
ARM Coretex-A73 Quad Core
MT5813P:1.0GHz Quad MT5813 Q:1.0GHzTriple
GPU
ARM Mal i-G 71
MT5813 P: 528MHz Triple Core MT5813 Q: 528MHz Dual Core
ARM
OSD VbyOne-IF
MT5813P: Support MT5813Q: Non Support
HDMI Rx3
MT5813 P: Support MT5813 Q: Non Support
USB Port0
MT5813P: Support MT5813Q: Non Support
MT5813 P+DSPAMP: Iris MT5813 Q+DSPAMP: Iris -Lite
Audio
DSP
ARM11
For Audio
STB3.3
DCDC
F15
W2D
Dolby Wrap
3D/2D NR
MJC(FRC)
Sharpness
STB WOW
F15V
STB3.3V
PMIC
RT5090
STM-IIC
SUB_ON >
PMIC_INT
STB1.05
DDR1.2/2.5
GPU1.0
DCDC
RT5759
F15
STM-IIC
CPU1.0
SUB_ON >
YPbPr
L/R in
CVBS
OPT
Head Phon e L/R
Optical OUT
SCART_CVBS
SCART_CVBS OUT
LPF
ARC OUT
Non Us e
Non Us e
Non Use : SCART _RGB, FB, SLO W,
Head Phone
Analog AV
DDC* > MT5813
HPD* < MT5813 HDMI_5V_DET* > MT5813
DDC* > MT5813
HPD* < MT5813 HDMI_5V_DET* > MT5813
HDMI2
HDMI3
DDC* > MT5813
HPD* < MT5813 HDMI_5V_DET* > MT5813
HDMI1
ARC JPN: HDMI1 Other : HDMI2
I2S(MCLK/LRCLK/BCLK/SDAT[1: 0]) XRST/#SOS/#AMP_MUTE
2018 (MT581
1) 6Gx2 3Gx1
2019 (MT581
3) 6Gx3
ETHER
10/100M 100Base-TX
STB5.3
IEEE802.11n/ac
Wireless UNIT
USB
Power SW
S5
For Wake up On Wireless (Euro)
WOW_ON_IRQ <
< WOW_PWR_ON
> WOW_OVP
USB-3
(3.0 HDD)
Except Japan : 11n -> 11ac
New WiFi / Bluetooth combo module
(Delete Bluetooth single function
module)
Non use
Japan : 15W+15W (YDA174+YDA176x2)
Else : 10W+10W (YDA174)
S1.8 S3.3
F16V
I2S AMP
YDA174-QZ
With DSP
Rch:10W
Lch:10W
I2S(MCLK/LRCLK/BCLK/SDAT0)
< AUDIO_XRST, AM P/H P MUT E
> SOUND_SOS
Audio Out L/R
Non Us e
Add Sub Woofer(HP
common)
Upper GX90 : Sub Woofer support
HP
amp
S3.3
Japan only : Delete
Component
Y Pb Pr
R L
(V)
Input
S5
24MHz
S3.3
USB-HUB
GL850G
HUB_XRST <
USB2.0-IF
HDD-USB Power SW
USB3.0-IF
USB*VBUS >
< OCP*
USB
Power SW
S5
USB*VBUS >
< OCP*
USB
Power SW
S5
USB*VBUS >
< OVCUR*
USB-1
USB-2
USB2.0-IF
DEMO_USB
_MEM
USB
Power SW
S5
USB*VBUS >
< OVCUR*
USB2.0-IF
S3.3/S1.8
Tuner
Si2151
wo/LNA(Singapore)
w/LNA(Barclay)
IFAGC1
EXT_IFAGC1
IEC
TU-IIC1
IF1
TU_Serial_TS1
Not applicable for Iran, India model.
S3.3/ S1.2
DVB-T/T2
DEMOD
1
<FE_XRST
BE-IIC2
24MHz
TU_Serial_TS1
EXT_IFAGC1
IF1
TU-IIC1

9.1. Main Block Diagram

TH-55GX800S
25
TH-55GX800S

10 Wiring Connection Diagram

10.1. Wire Dressing 1

1. Fix all wire connector and LVDS wire to PCB.
2. Dressing wire follow picture.
No Description Qty UOM Remarks
1 WIFI_USB_CABLE 1 PC
2 PET_TAPE 0.58 MT
3 WIRE (A-K) 1 PC
4 WIRE (A-SP) 1 PC
5 LVDS CABLE 1 PC
6 WIRE (P5-GK4) 1 PC
7 WIRE (A-P) 1 PC
26
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