Panasonic VIERA TX-42AS650B User manual

© Panasonic Corporation 2014.
Unauthorized copying and distribution is a violation
of law.
ORDER NO.PCZ1403056CE
LCD Television
Model No. TX-42AS650B
TX-42AS650E
LA51 Chassis

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TABLE OF CONTENTS
PAGE 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------------------------------------------9
5.1. Specification of KEY for CI Plus, DTCP-IP,
One-to-One, Widevine, Netflix and HDCP-----------9
5.2. USB HDD Recording --------------------------------------9
6 Service Mode ----------------------------------------------------- 10
6.1. How to enter into Service Mode ---------------------- 10
6.2. Service tool mode---------------------------------------- 12
6.3. DRV Check - USBHDD Check------------------------ 13
6.4. Hotel mode------------------------------------------------- 13
6.5. Data Copy by USB Memory --------------------------- 14
7 Troubleshooting Guide---------------------------------------- 17
7.1. Check of the IIC bus lines------------------------------ 17
7.2. Power LED Blinking timing chart --------------------- 19
7.3. LCD Panel test mode ----------------------------------- 19
7.4. No Power--------------------------------------------------- 20
8 Disassembly and Assembly Instructions --------------- 21
8.1. Disassembly Flow Chart for the Unit ---------------- 21
8.2. Disassembly Procedure for the Unit----------------- 22
8.3. Specification of EMI countermeasures ------------- 27
9 Measurements and Adjustments -------------------------- 32
9.1. Voltage chart of P-board-------------------------------- 32
9.2. Voltage chart of A-board------------------------------- 32
10 Block Diagram --------------------------------------------------- 33
10.1. Block Diagram (1/2) ------------------------------------- 33
10.2. Block Diagram (2/2) ------------------------------------- 34
11 Wiring Connection Diagram --------------------------------- 35
11.1. Wiring Diagram ------------------------------------------- 35
11.2. Caution statement.--------------------------------------- 36
11.3. Dressing Wire --------------------------------------------- 36

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1 Safety Precautions
1.1. General Guidelines
1. When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials.
2. 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.
3. When conducting repairs and servicing, do not twist the Fasten connectors but plug them straight in or unplug them straight
out.
4. 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.
5. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
6. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
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) expressed as voltage U1and U2, does not exceed the following values:
For a. c.: U1= 35 V (peak) and U2= 0.35 V (peak);
For d. c.: U1= 1.0 V,
Note:
The limit value of U2= 0.35 V (peak) for a. c. and U1= 1.0 V for d. c. correspond to the values 0.7 mA (peak) a. c. and 2.0
mA d. c.
The limit value U1= 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100 kHz.
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.
Figure 1

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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 Function
A-Board Main
P-Board Power
K-Board IR/LED/CATS
GK-Board SWITCH

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4 Specifications
Product fiche
TV
Energy efficiency class A+
Visible screen size (diagonal) 106 cm / 42 inches
On mode average power consumption 48 W
Annual energy consumption *1 67 kWh
Standby power consumption *2 0.20 W
Off mode power consumption 0.20 W
Screen resolution 1 920 (W) 1 080 (H)
*1: Energy consumption XYZ kWh per year, based on the power consumption of the television operating 4 hours per day for 365 days.
The actual energy consumption will depend on how the television is used.
*2: when the TV is turned off with the remote control and no function is active.
For the information of rated power consumption, refer to the label on the TV back cover.
Dimensions (W × H × D)
962 mm 608 mm 202 mm (With Pedestal)
962 mm 562 mm 54 mm (TV only)
Mass
11.0 kg Net (With Pedestal)
10.0 kg Net (TV only)
Power source AC 220-240 V, 50 / 60 Hz
Panel LED LCD panel
Sound
Speaker output 20 W (10 W + 10 W)
Headphones M3 (3.5 mm) stereo mini Jack 1
Connection terminals
AV1 input / output
SCART (Audio/Video in, Audio/Video out, RGB in)
AV2 input (COMPONENT / VIDEO)
VIDEO RCA PIN Type 1 1.0 V [p-p] (75 )
AUDIO L - R RCA PIN Type 2 0.5 V [rms]
Y1.0 V [p-p] (including synchronisation)
PB/CB, PR/CR± 0.35 V [p-p]
HDMI 1 / 2 / 3 input TYPE A Connectors
HDMI 1 / 3 : 3D, Content Type
HDMI 2 : 3D, Content Type, Audio Return Channel
• This TV supports "HDAVI control 5" function.
Card slot SD Card slot 1
Common Interface slot (complies with CI Plus) 1
ETHERNET RJ45, IEEE802.3 10BASE-T / 100BASE-TX
USB 1 / 2
USB1 / 2: DC 5 V, Max. 500 mA [Hi-Speed USB (USB 2.0)]
DIGITAL AUDIO output PCM / Dolby Digital / DTS, Fibre optic
Receiving systems / Band name (B)
Check the latest information on the available services at the following website.
http://panasonic.net/viera/support
DVB-T / T2 Digital terrestrial services
(UK)
PAL I UHF E21 - 68
(Ireland)
PAL I VHF A - J
CATV S1 - S20
UHF E21 - E69
CATV S21 - S41 (Hyperband)
PAL 525/60 Playback of NTSC tape from some PAL Video recorders (VCR) or NTSC disc playback from
DVD player and recorder
M.NTSC Playback from M.NTSC Video recorders (VCR)
NTSC (AV input only) Playback from NTSC Video recorders (VCR)

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3D Eyewear
Note
• Use Panasonic 3D Eyewear supporting passive 3D system technology.
• Touch Pad Controller uses Bluetooth wireless technology.
• Design and Specifications are subject to change without notice. Mass and Dimensions shown are approximate.
• For the information of the open source software, refer to [eHELP] (Support > Licence).
• This equipment complies with the EMC standards listed below.
EN55013, EN61000-3-2, EN61000-3-3, EN55020, EN55022, EN55024
Receiving systems / Band name (E)
Check the latest information on the available services at the following website. (English only)
http://panasonic.net/viera/support
DVB-C Digital cable services (MPEG2 and MPEG4-AVC(H.264))
DVB-T / T2 Digital terrestrial services (MPEG2 and MPEG4-AVC(H.264))
PAL B, G, H, I, SECAM B, G, SECAM L, L’
VHF E2 - E12
CATV (S01 - S05)
VHF H1 - H2 (ITALY)
CATV S1 - S10 (M1 - M10)
VHF A - H (ITALY)
CATV S11 - S20 (U1 - U10)
UHF E21 - E69
CATV S21 - S41 (Hyperband)
PAL D, K, SECAM D, K VHF R1 - R2
VHF R6 - R12
VHF R3 - R5
UHF E21 - E69
PAL 525/60 Playback of NTSC tape from some PAL Video recorders (VCR)
M.NTSC Playback from M.NTSC Video recorders (VCR)
NTSC (AV input only) Playback from NTSC Video recorders (VCR)
Aerial input
(UK) UHF
(Ireland) / E VHF / UHF
Operating Conditions
Temperature: 0 °C - 35 °C
Humidity: 20 % - 80 % RH (non-condensing)
Built-in wireless LAN
Standard compliance and Frequency range*1
IEEE802.11a/n 5.180 GHz - 5.320 GHz, 5.500 GHz - 5.580 GHz, 5.660 GHz - 5.700 GHz
IEEE802.11b/g/n 2.412 GHz - 2.472 GHz
Security WPA2-PSK (TKIP/AES), WPA-PSK (TKIP/AES), WEP (64 bit/128 bit)
Bluetooth wireless technology*2
Standard Compliance Bluetooth 3.0
Frequency Range 2.402 GHz - 2.480 GHz
*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
(except Touch Pad Controller).
Dimensions (W H D) 165 mm 38 mm 166 mm
Mass Approx. 18 g
Usage temperature range 0 °C - 40 °C
Materials
Main body / Lens section Resin

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5 Technical Descriptions
5.1. Specification of KEY for CI Plus, DTCP-IP, One-to-One, Widevine, Netflix
and HDCP
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).
All KEY are not generated for all models.
The necessary KEY are only generated and stored depend on the feature of models.
5.1.2. Replacement of ICs:
When Main IC (IC8000) is replaced, eMMC (IC8903) should be also replaced with new one the same time.
When eMMC (IC8903) is replaced, Main IC (IC8000) 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.
5.1.3. Model and Keys:
5.2. USB HDD Recording
5.2.1. General information:
Digital TV programmes can be recorded in USB HDD.
A One-to-One key generated in A-board by SELF CHECK binds TV and USB-HDD for communication.
That key is only one key for them. If the key is difference, TV can not access USB-HDD.
Caution:
New key will be generated by following SELF CHECK and previous TV programmes recorded in USB HDD will not be
viewed.
SELF CHECK: While pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for
more than 3 seconds.
Model No. Keys
One-to-One
(For USB Rec.)
CI Plus DTCP-IP WIDEVINE Netflix HDCP2
TX-42AS650B Yes Yes Yes Yes Yes Yes
TX-42AS650E Yes Yes Yes Yes Yes Yes

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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 [ RED ] button of the remote control three times within 2 seconds.
Note:
Service Mode can not be entered when 3D signal input.
Input 2D signal to enter Service Mode.
6.1.2. Key command
Press the [3/4] button to change the adjustment values or function.
Press the [1/2] button to step up/down through the functions and adjustments.
Press the numerical button [VOLUME (+/-)] to change of each option item.
Press the [OK] button after each adjustment has been made to store the required values.
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.