Panasonic TC-58AX800U User manual

© Panasonic Corporation 2014.
Unauthorized copying and distribution is a violation
of law.
ORDER NO. MTNC140315CE
58 inch Class 4K Ultra HD TV
Model No. TC-58AX800U
LA52 Chassis

2
TABLE OF CONTENTS
PAGE
1 Safety Precautions -----------------------------------------------3
1.1. General Guidelines ----------------------------------------3
1.2. Touch-Current Check--------------------------------------3
2Warning--------------------------------------------------------------4
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatically Sensitive (ES) Devices ----------4
2.2. About lead free solder (PbF) ----------------------------5
3 Service Navigation------------------------------------------------6
3.1. PCB Layout --------------------------------------------------6
4 Specifications ------------------------------------------------------7
5 Technical Descriptions------------------------------------------8
5.1. Specification of KEY for DTCP-IP, WMDRM
and Widevine------------------------------------------------8
6 Service Mode -------------------------------------------------------9
6.1. How to enter into Service Mode ------------------------9
6.2. SRV-TOOL------------------------------------------------- 10
6.3. Hotel mode------------------------------------------------- 11
6.4. Data Copy by USB Memory --------------------------- 12
7 Troubleshooting Guide---------------------------------------- 15
7.1. Check of the IIC bus lines------------------------------ 15
7.2. Power LED Blinking timing chart --------------------- 16
7.3. LCD Panel test mode / FR test mode--------------- 16
8 Disassembly and Assembly Instructions --------------- 17
8.1. Disassembly Flow Chart for the Unit ---------------- 17
8.2. Disassembly Procedure for the Unit----------------- 17
9 Measurements and Adjustments -------------------------- 36
9.1. Voltage chart of A-Board ------------------------------ 36
9.2. Voltage chart of P-Board ------------------------------- 36
9.3. Voltage chart of HE-Board ----------------------------- 36
9.4. Voltage chart of FR-Board ----------------------------- 36
10 Block Diagram --------------------------------------------------- 37
10.1. Main Block Diagram ------------------------------------- 37
10.2. Block (1/3) Diagram ------------------------------------- 38
10.3. Block (2/3) Diagram ------------------------------------- 39
10.4. Block (3/3) Diagram ------------------------------------- 40
11 Wiring Connection Diagram --------------------------------- 41
11.1. Caution statement.--------------------------------------- 41
11.2. Wiring (1) --------------------------------------------------- 41
11.3. Wiring (2) --------------------------------------------------- 42
11.4. Wiring (3) --------------------------------------------------- 43
11.5. Wiring (4) --------------------------------------------------- 44
11.6. Wiring (5) --------------------------------------------------- 44
12 Schematic Diagram--------------------------------------------- 45
13 Printed Circuit Board ------------------------------------------ 45
14 Exploded View and Replacement Parts List ----------- 45
14.1. Exploded View -------------------------------------------- 45
14.2. Electrical Replacement Parts List-------------------- 45

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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 Fasten connectors but plug them straight in or unplug them straight
out.
1.2. Touch-Current Check
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a measuring network for touch currents 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 Leakage Current Tester (Simpson 228 or equivalent) to measure the potential across the measuring network.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reserve the AC plug in the AC outlet and repeat each of the above measure.
6. The potential at any point (TOUCH CURRENT) shall not exceed 0.5 MIU.
7. In case a measurement is out 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.

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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).

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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 it's manufacture due to environmental conservation issues. For service and repair work, we'd
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)
Suggested Pb free solder
There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder.
However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.

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3 Service Navigation
3.1. PCB Layout
Board Name Main Device
A-Board TUN, OFDM, ADV, LD4, STBY EEP
P-Board Power Supply
GK-Board Function SW for LGD panel
K-Board LED, RM, CATS
FR-Board GCX
HE-Board HEVC ( Non serviceable, HE-Board should be exchanged for service )
MD-Board Human Activity Sensor

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4 Specifications

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5 Technical Descriptions
5.1. Specification of KEY for DTCP-IP, WMDRM and Widevine
5.1.1. General information:
1. eMMC (IC8903) for spare parts has the seed of KEY for each.
2. The final KEY data will be generated by Main IC (IC8000) when SELF CHECK was done and are stored in both Main IC
(IC8000) and eMMC (IC8903).
5.1.2. Replacement of ICs:
When Main IC is replaced, eMMC (IC8903) should be also replaced with new one the same time.
When eMMC (IC8903) is replaced, Main IC is not necessary to be replaced the same time.
After the replacement of IC, SELF CHECK should be done to generate the final KEY data.
How to SELF CHECK: While pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for
more than 3 seconds.
TV will be forced to the factory shipment setting after this SELF CHECK.

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6 Service Mode
6.1. How to enter into Service Mode
6.1.1. 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.
6.1.2. Key command
[1] button...Main items Selection in forward direction
[2] button...Main items Selection in reverse direction
[3] button...Sub items Selection in forward direction
[4] button...Sub items Selection in reverse direction
[VOL] button...Value of sub items change in forward direction ( + ), in reverse direction ( - )
6.1.3. How to exit
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
6.1.4. Contents of adjustment mode
• Value is shown as a hexadecimal number.
• Preset value differs depending on models.
• After entering the adjustment mode, take note of the value in each item before starting adjustment.
Main item Sub item Sample Data Remark
ADJUST CONTRAST 000
COLOR 34
TINT 00
SUB-BRT 800
BACKLGT FFF
B-Y-G 40
R-Y-A 00
V COM 000
WB-ADJ R-GAIN D6
G-GAIN C7
B-GAIN FF
R-CENT 89
G-CENT 80
B-CENT AB
OPTION Boot ROM Factory Preset.
STBY-SET 00
EMERGENCY ON
CLK MODE 01
CLOCK FFF
EDID-CLK HIGH
SRV-TOOL 00 See next.

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6.2. SRV-TOOL
6.2.1. How to access
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.
6.2.2. Display of SOS History
SOS History (Number of LED blinking) indication.
From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory
shipment setting].
6.2.3. POWER ON TIME/COUNT
Note : To display TIME/COUNT menu, highlight position, then press MUTE for 3 sec.
Time : Cumulative power on time, indicated hour : minute by decimal
Count : Number of ON times by decimal
Note : This indication will not be cleared by either of the self-checks or any other command.
6.2.4. Exit
Disconnect the AC cord from wall outlet or press the [POWER] button on the main unit for 3 seconds to turn off and then turn on
automatically.