Panasonic TXP42VT20E User manual

© Panasonic Corporation 2010.
Unauthorized copying and distribution is a violation
of law.
ORDER NO.PCZ1008135CE
Plasma Television
Model No. TX-P42VT20E
GPF13DSE Chassis

2
TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions---------------------------------------------------------------------3
1.1. General Guidelines -----------------------------------------------------------3
1.2. Touch-Current Check --------------------------------------------------------3
2 Warning ------------------------------------------------------------------------------------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
3.2. Applicable signals-------------------------------------------------------------7
4 Specifications ---------------------------------------------------------------------------8
5 Technical Descriptions -------------------------------------------------------------10
5.1. Specification of KEY for CI Plus, DTCP-IP and One-to-One-----10
5.2. USB HDD Recording-------------------------------------------------------10
5.3. Service port (M3 mini Jack) Specifications --------------------------- 11
6 Service Mode --------------------------------------------------------------------------14
6.1. How to enter into Service Mode-----------------------------------------14
6.2. Option - Mirror ---------------------------------------------------------------16
6.3. Service tool mode-----------------------------------------------------------16
6.4. Hotel mode -------------------------------------------------------------------17
6.5. Data Copy by SD Card ----------------------------------------------------18
7 Troubleshooting Guide -------------------------------------------------------------21
7.1. Check of the IIC bus lines-------------------------------------------------21
7.2. Power LED Blinking timing chart ----------------------------------------22
7.3. No Power----------------------------------------------------------------------23
7.4. No Picture---------------------------------------------------------------------24
7.5. Local screen failure---------------------------------------------------------25
8 Service Fixture & Tools-------------------------------------------------------------26
8.1. SC jig---------------------------------------------------------------------------26
9 Disassembly and Assembly Instructions ------------------------------------27
9.1. Remove the Rear cover ---------------------------------------------------27
9.2. Remove the AC inlet -------------------------------------------------------27
9.3. Remove the P-Board-------------------------------------------------------27
9.4. Remove the Side terminal cover and the Side shield metal------27
9.5. Remove the XS-Board-----------------------------------------------------28
9.6. Remove the Tuner unit ----------------------------------------------------28
9.7. Remove the A-Board-------------------------------------------------------28
9.8. Remove the Speakers -----------------------------------------------------29
9.9. Remove the Woofer --------------------------------------------------------29
9.10. Remove the Fan-------------------------------------------------------------29
9.11. Remove the SM-Board ----------------------------------------------------29
9.12. Remove the SC-Board-----------------------------------------------------30
9.13. Remove the SS2-Board ---------------------------------------------------30
9.14. Remove the SS-Board-----------------------------------------------------30
9.15. Remove the Hanger metals and the One leg bracket -------------30
9.16. Remove the Cabinet mount metals-------------------------------------31
9.17. Remove the D-Board-------------------------------------------------------31
9.18. Remove the C1-Board -----------------------------------------------------31
9.19. Remove the C2-Board -----------------------------------------------------32
9.20. Remove the Plasma panel section from the Cabinet assy -------32
9.21. Remove the Contact metals ----------------------------------------------32
9.22. Remove the K-Board-------------------------------------------------------33
9.23. Remove the V-Board -------------------------------------------------------33
9.24. Replace the plasma panel ------------------------------------------------33
10 Measurements and Adjustments------------------------------------------------34
10.1. Adjustment--------------------------------------------------------------------34
11 Block Diagram-------------------------------------------------------------------------39
11.1. Main Block Diagram --------------------------------------------------------39
11.2. Block (1/5) Diagram --------------------------------------------------------40
11.3. Block (2/5) Diagram --------------------------------------------------------41
11.4. Block (3/5) Diagram --------------------------------------------------------42
11.5. Block (4/5) Diagram --------------------------------------------------------43
11.6. Block (5/5) Diagram --------------------------------------------------------44
12 Wiring Connection Diagram ------------------------------------------------------45
12.1. Caution statement.----------------------------------------------------------45
12.2. Wiring (1)----------------------------------------------------------------------45
12.3. Wiring (2)----------------------------------------------------------------------46
12.4. Wiring (3)----------------------------------------------------------------------47
12.5. Wiring (4)----------------------------------------------------------------------48
12.6. Wiring (5)----------------------------------------------------------------------49
13 Schematic Diagram ------------------------------------------------------------------51
13.1. Schematic Diagram Note -------------------------------------------------51
13.2. P-Board (1/4) Schematic Diagram--------------------------------------52
13.3. P-Board (2/4) Schematic Diagram--------------------------------------53
13.4. P-Board (3/4) Schematic Diagram--------------------------------------54
13.5. P-Board (4/4) Schematic Diagram--------------------------------------55
13.6. A-Board (1/26) Schematic Diagram ------------------------------------56
13.7. A-Board (2/26) Schematic Diagram ------------------------------------57
13.8. A-Board (3/26) Schematic Diagram ------------------------------------58
13.9. A-Board (4/26) Schematic Diagram ------------------------------------59
13.10. A-Board (5/26) Schematic Diagram ------------------------------------60
13.11. A-Board (6/26) Schematic Diagram ------------------------------------61
13.12. A-Board (7/26) Schematic Diagram ------------------------------------62
13.13. A-Board (8/26) Schematic Diagram ------------------------------------63
13.14. A-Board (9/26) Schematic Diagram ------------------------------------64
13.15. A-Board (10/26) Schematic Diagram ----------------------------------65
13.16. A-Board (11/26) Schematic Diagram-----------------------------------66
13.17. A-Board (12/26) Schematic Diagram ----------------------------------67
13.18. A-Board (13/26) Schematic Diagram ----------------------------------68
13.19. A-Board (14/26) Schematic Diagram ----------------------------------69
13.20. A-Board (15/26) Schematic Diagram ----------------------------------70
13.21. A-Board (16/26) Schematic Diagram ----------------------------------71
13.22. A-Board (17/26) Schematic Diagram ----------------------------------72
13.23. A-Board (18/26) and V-Board Schematic Diagram -----------------73
13.24. A-Board (19/26) Schematic Diagram ----------------------------------74
13.25. A-Board (20/26) Schematic Diagram ----------------------------------75
13.26. A-Board (21/26) Schematic Diagram ----------------------------------76
13.27. A-Board (22/26) and K-Board Schematic Diagram-----------------77
13.28. A-Board (23/26) Schematic Diagram ----------------------------------78
13.29. A-Board (24/26) Schematic Diagram ----------------------------------79
13.30. A-Board (25/26) Schematic Diagram ----------------------------------80
13.31. A-Board (26/26) Schematic Diagram ----------------------------------81
13.32. XS-Board Schematic Diagram-------------------------------------------82
13.33. D-Board (1/4) Schematic Diagram--------------------------------------83
13.34. D-Board (2/4) Schematic Diagram--------------------------------------84
13.35. D-Board (3/4) Schematic Diagram--------------------------------------85
13.36. D-Board (4/4) Schematic Diagram--------------------------------------86
13.37. C1-Board (1/2) Schematic Diagram------------------------------------87
13.38. C1-Board (2/2) Schematic Diagram------------------------------------88
13.39. C2-Board (1/2) Schematic Diagram------------------------------------89
13.40. C2-Board (2/2) Schematic Diagram------------------------------------90
13.41. SC-Board (1/4) Schematic Diagram -----------------------------------91
13.42. SC-Board (2/4) Schematic Diagram -----------------------------------92
13.43. SC-Board (3/4) Schematic Diagram -----------------------------------93
13.44. SC-Board (4/4) Schematic Diagram -----------------------------------94
13.45. SS-Board (1/2) Schematic Diagram------------------------------------95
13.46. SS-Board (2/2) and SS2-Board Schematic Diagram --------------96
14 Printed Circuit Board ---------------------------------------------------------------97
14.1. P-Board------------------------------------------------------------------------97
14.2. K,V and SS2-Board-------------------------------------------------------100
14.3. A-Board----------------------------------------------------------------------101
14.4. XS-Board--------------------------------------------------------------------103
14.5. D-Board----------------------------------------------------------------------104
14.6. C1-Board --------------------------------------------------------------------106
14.7. C2-Board --------------------------------------------------------------------107
14.8. SC-Board--------------------------------------------------------------------108
14.9. SS-Board--------------------------------------------------------------------110
15 Exploded View and Replacement Parts List ------------------------------113
15.1. Exploded View and Mechanical Replacement Parts List -------113
15.2. Electrical Replacement Parts List-------------------------------------121

3
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 Elec-
trostatically 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 alumi-
num 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 compara-
ble 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 brush-
ing 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).

5
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 sol-
der. 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. How-
ever, 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 Board Name Function
P Power Supply C1 Data Driver (Lower Right)
A DC-DC Converter, Tuner
Speaker out, AV Terminal, HDMI in, SD Card, PC in
Digital Signal Processor, PEAKS-LDA2
Format Converter, Plasma AI, Sub-Field Processor
Power Switch, Key Switch
C2 Data Driver (Lower Left)
SC Scan Drive
SS Sustain Drive
SS2 Sustain out (Lower)
SM Scan out
Non serviceable.
SM-Board should be exchanged for service.
K Remote receiver, Power LED, C.A.T.S. sensor, SD LED
V 3D Eyewear transmitter
D Format Converter, Plasma AI, Sub-Field Processor
XS Sat Tuner

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3.2. Applicable signals
COMPONENT (Y, PB, PR), HDMI
* Mark: Applicable input signal for Component (Y, PB, PR) and HDMI
PC (from D-sub 15P)
Applicable input signal for PC is basically compatible to VESA standard timing.
PC (from HDMI terminal)
Applicable input signal for PC is basically compatible to HDMI standard timing.
Note
• Signals other than above may not be displayed properly.
• The above signals are reformatted for optimal viewing on your display.
• PC signal is magnified or compressed for display, so that it may not be possible to show fine detail with sufficient clarity.
Signal name COMPONENT HDMI
525 (480) / 60i * *
525 (480) / 60p * *
625 (576) / 50i * *
625 (576) / 50p * *
750 (720) / 60p * *
750 (720) / 50p * *
1,125 (1,080) / 60i * *
1,125 (1,080) / 50i * *
1,125 (1,080) / 60p *
1,125 (1,080) / 50p *
1,125 (1,080) / 24p *
Signal name Horizontal frequency (kHz) Vertical frequency (Hz)
640 ×400 @70 Hz 31.47 70.07
640 ×480 @60 Hz 31.47 59.94
640 ×480 @75 Hz 37.50 75.00
800 ×600 @60 Hz 37.88 60.32
800 ×600 @75 Hz 46.88 75.00
800 ×600 @85 Hz 53.67 85.06
852 ×480 @60 Hz 31.44 59.89
1,024 ×768 @60 Hz 48.36 60.00
1,024 ×768 @70 Hz 56.48 70.07
1,024 ×768 @75 Hz 60.02 75.03
1,024 ×768 @85 Hz 68.68 85.00
1,280 ×768 @60 Hz 47.70 60.00
1,280 ×1,024 @60 Hz 63.98 60.02
1,366 ×768 @60 Hz 48.39 60.04
Macintosh13” (640 ×480) 35.00 66.67
Macintosh16” (832 ×624) 49.73 74.55
Macintosh21” (1,152 ×870) 68.68 75.06
Signal name Horizontal frequency (kHz) Vertical frequency (Hz)
640 ×480 @60 Hz 31.47 60.00
750 (720) / 60p 45.00 60.00
1,125 (1,080) / 60p 67.50 60.00

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4 Specifications
QTV
Power Source AC 220-240 V, 50 / 60 Hz
Power Consumption 390 W
On mode Average Power Consumption 179 W
Standby Power Consumption 0.4 W
32.0 W (With monitor out recording)
Display panel
Aspect Ratio 16:9
Visible screen size 106 cm (diagonal)
921 mm (W) ×518 mm (H)
Number of pixels 2,073,600 (1,920 (W) ×1,080 (H)) [5,760 ×1,080 dots]
Sound
Speaker Full range (120 mm ×35 mm) ×2 pcs, Woofer ( 100 mm) ×1 pcs
Audio Output 30 W ( 10 W ×2 + 10 W )
Headphones M3 (3.5 mm) stereo mini Jack ×1
PC signals VGA, SVGA, WVGA, XGA
SXGA, WXGA ...... (compressed)
Horizontal scanning frequency 31 - 69 kHz
Vertical scanning frequency 59 - 86 Hz
Receiving Systems / Band name
PAL B, G, H, I, SECAM B, G, SECAM L, L’
VHF E2 - E12 VHF H1 - H2 (ITALY)
VHF A - H (ITALY) UHF E21 - E69
CATV (S01 - S05) CATV S1 - S10 (M1 - M10)
CATV S11 - S20 (U1 - U10) CATV S21 - S41 (Hyperband)
PAL D, K, SECAM D, K
VHF R1 - R2 VHF R3 - R5
VHF R6 - R12 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)
DVB-T Digital terrestrial services (MPEG2 and MPEG4-AVC(H.264))
DVB-C Digital cable services (MPEG2 and MPEG4-AVC(H.264))
Countries that DVB-C is available: Germany, Switzerland,
Denmark, Sweden, Norway, Finland, Netherlands
DVB-S / S2 Digital satellite services (MPEG2 and MPEG4-AVC(H.264))
Receiver frequency range - 950 MHz to 2,150 MHz
LNB Power and Polarization - Vertical: +13 V
Horizontal: +18 V
Current: Max. 500 mA
(overload protection)
22 kHz Tone - Frequency: 22 kHz ± 2 kHz
Amplitude: 0.6 V ± 0.2 V
Symbol Rate - Max. 30 MS/s
FEC Mode - 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10
Demodulation - QPSK, 8PSK
DiSEqC - Version 1.0
• Check the latest information on the available services at the following website. (English only)
http://panasonic.jp/support/global/cs/tv/
Satellite dish input Female F-type 75 Ω
Aerial - input VHF/UHF
Operating Conditions
Temperature: 0 °C - 35 °C
Humidity: 20 % - 80 % RH (non-condensing)
Connection Terminals
AV1 (Scart terminal) 21 Pin terminal (Audio/Video in, Audio/Video out, RGB in, Q-Link)
AV2 (Scart terminal) 21 Pin terminal (Audio/Video in, Audio/Video out, RGB in, S-Video in, Q-Link)
AV3
VIDEO RCA PIN Type ×1 1.0 V [p-p] (75 Ω)
AUDIO L - R RCA PIN Type ×2 0.5 V [rms]
COMPONENT
VIDEO Y 1.0 V [p-p] (including synchronization)
PB, PR± 0.35 V [p-p]
AUDIO L - R RCA PIN Type ×2 0.5 V [rms]
Others
HDMI1 / 2 / 3 / 4 TYPE A Connectors

9
Q3D Eyewear
QWireless LAN Adaptor
HDMI1 / 3 / 4 : HDMI (Version 1.4 with 3D, Content Type), Deep Colour,
x.v.Colour™
HDMI2 : HDMI (Version 1.4 with 3D Content Type, Audio Return Chan-
nel), Deep Colour, x.v.Colour™
• This TV supports [ HDAVI Control 5 ] function.
PC HIGH-DENSITY D-SUB 15PIN R,G,B/0.7 V [p-p] (75 Ω)
HD, VD/TTL Level 2.0 - 5.0 V [p-p] (high impedance)
Card slot SD Card slot ×1
Common Interface slot (complies with CI Plus) ×1
ETHERNET RJ45, IEEE802.3 10BASE-T / 100BASE-TX
USB1 / 2 USB2.0 DC 5 V, Max 500 mA
Output
AUDIO L - R RCA PIN Type ×2 0.5 V [rms] (high impedance)
DIGITAL AUDIO OUT PCM / Dolby Digital, Fiber optic
Dimensions (W ×H ×D) 1,035 mm ×695 mm ×308 mm (With Pedestal)
1,035 mm ×656 mm ×85 mm (TV only)
Mass 24.0 kg Net (With Pedestal)
21.0 kg Net (TV only)
Lens type Liquid Crystal Shutter
Frame sequential type
Battery (Duration) Coin-shaped lithium battery CR2032
(approx. 75 hours in continuous use of the battery made by Panasonic)
Materials Main body: Resin
Lens: Liquid crystal glass
Viewing range within approx. 3.2 m from the front of the TV
Operating Conditions 0 °C - 40 °C
Dimensions (W ×H ×D) 177 mm ×46 mm ×174 mm
Mass (including battery) 63.0 g Net
Antenna Tx 1, Rx 2
Interface USB 2.0
Standard Compliance IEEE802.11n / IEEE802.11a / IEEE802.11g / IEEE802.11b
Transmission system MISO-OFDM system, OFDM system, DSSS system
Frequency Range IEEE802.11n / IEEE802.11a:
5.15 GHz - 5.35 GHz
5.47 GHz - 5.725 GHz
IEEE802.11g / IEEE802.11b / IEEE802.11n:
2.4 GHz - 2.4835 GHz
Transfer rate (standard)* IEEE802.11n: Tx Max. 150 Mbps, Rx Max. 300 Mbps
IEEE802.11g / IEEE802.11a: Max. 54 Mbps
IEEE802.11b: Max. 11 Mbps
Access Mode Infrastructure mode
Security WPA2-PSK (TKIP/AES)
WPA-PSK (TKIP/AES)
WEP (64 bit / 128 bit) • This device supports WPA and WPA2 encryption.
Dimensions (W ×H ×D) 44 mm ×27 mm ×72 mm
Mass 29.0 g Net
MAC address and Product Identification Marking are located on the bottom of the Wireless LAN Adaptor.
*Transfer rates are theoretical values; however, actual communication rate will vary according to communication environment or
connected equipment.
Note
• Design and Specifications are subject to change without notice. Mass and Dimensions shown are approximate.
• This equipment complies with the EMC standards listed below.
EN55013, EN61000-3-2, EN61000-3-3, EN55020, EN55022, EN55024.

10
5 Technical Descriptions
5.1. Specification of KEY for CI Plus, DTCP-IP and One-to-One
5.1.1. General information:
1. EEPROM (IC8950) for spare parts has the seed of KEY for each.
2. The final KEY data will be generated by Peaks IC (IC8000) when SELF CHECK was done and are stored in both Peaks IC
(IC8000) and EEPROM (IC8950).
Three 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 Peaks IC (IC8000) is replaced, EEPROM (IC8950) should be also replaced with new one the same time.
When EEPROM (IC8950) is replaced, Peaks 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
CI Plus DTCP-IP One-to-One
(For USB Rec.)
TX-P42VT20E Yes Yes Yes

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5.3. Service port (M3 mini Jack) Specifications
The Service port (M3 mini Jack) on the following TVs can use as the RS232C terminal which is a standard computer SERIAL inter-
face.
*This operation system should be used by the certified professional dealer.
PC Control of the TV
• The TV can be controlled by a personal computer when connected through an RS232C/ M3 mini jack conversion cable (not sup-
plied).
• The computer will require software which allows sending and receiving of control data through its SERIAL port.
Please see required parameters and commands below.
Communication parameters
Basic format for control data
The transmission of control data from the PC starts with a STX signal, followed by the command, the parameters, and lastly an
EXT signal in that order. If there are no parameters, then the parameter signal does not need to be sent.
*Please see other side regarding Commands and Parameters.
Connection
Notes:
• With standby mode, this TV responds to "PON” and “QPW” commands only.
• Wait for the response of the first command to come from this unit before sending the next command.
• If multiple commands are transmitted, be sure to keep intervals of 250 m sec.
Send the command again when the call back command is unusual.
• If an incorrect command is sent by mistake, this TV will send an “ER401” or “ER402” command back to the computer.
• This TV does not respond for 15 seconds when “PON” or “POF” commands are transmitted.
• Send “EXT” commands before sending “IMS:**” commands.
• MUTE commands ("AMT: 0" and "AMT: 1") and "AVL: ***" command are invalid in case of HDMI (CECIL) cooperation.
However AMT, AUK, AUDI commands is effective. (MUTE rotation (toggle), VOLUME UP and VOLUME DOWN controls are
possible.)
Signal level RS-232C compliant
Synchronization method Asynchronous
Baud rate 9600 bps
Parity None
Character length 8 bits
Stop bit 1 bit
Flow control -

12
Main, Input & Picture Control Command
Control
Command
Inquiry
Command
Call back
Command
Parameter note
STANDARD
CONTROL
POWER ON PON QPW QPW : * "0"(OFF)/ "1"(ON)
POWER OFF POF
VOL (level) AVL: *** QAV QAV : *** "000" - "100"
(up) AUU
(down) AUD
MUTE AMT (Toggle) QAM QAM : * "0"(NO MUTED)
/ "1"(MUTED)
AMT: *
ASPECT DAM: **** QAS QAS : **** "ZOOM"/"FULL"/
"JUST"/"NORM"/
"SELF"/"ZOM2"/
"ZOM3"/"SFUL"/
"14:9"
Except SD mode
DAM (Tog-
gle)
INPUT
SELECT
CH UP CHU -- -- --
CH DOWN CHD -- -- --
TV IMS : TV QMI QMI : ** "TV" TV network (Toggle)
Analogue TV IMS : TVA "TVA"
DVB-T IMS : TVD "TVD"
DVB-S/Other Sat IMS : BS1 "BS1"
Freesat IMS : BS2 "BS2"
DVB-C IMS : CAB "CAB"
Component 1 IMS : C1 "C1"
Component2 IMS : C2 "C2"
Video 1 IMS : V1 "V1"
Video 2 IMS : V2 "V2"
Video 3 IMS : V3 "V3"
S-Video 1 IMS : S1 "S1" SCART Cable
S-Video 2 IMS : S2 "S2" SCART Cable
HDMI 1 IMS : H1 "H1"
HDMI 2 IMS : H2 "H2"
HDMI 3 IMS : H3 "H3"
HDMI 4 IMS : H4 "H4"
PC IMS : PC "PC"
SD (photo viewer) IMS : SP "SP"
VIERA CAST IMS : VC "VC"
PICTURE
MODE
Vivid (Dynamic) VPC : VVT QPC QPC : *** "VVT"
Standard VPC : STD "STD"
THX/ True Cinema VPC : THX "THX" THX : Except PC, JPEG, MOVIE & VIERA CAST
Cinema VPC : CNM "CNM"
Game VPC : GAM "GAM"
Photo VPC : CST "CST" Only HDMI, JPEG, MOVIE & VIERA CAST
Pro1 VPC : PR1 "PR1" When Advance (isfccc) menu is On.
Except VIERA CAST
Pro2 VPC : PR2 "PR2"

13
Else & Remote Controller Key Command
Control
Command
Inquiry
Command
Call back
Command
Parameter note
Information INF
-- QIF QIF : ***** 480i
480p
576i
576p
720p
1080i
1080p
DIRECT CH
INPUT
0 ICH : 0 - - -
1 ICH : 1 - - -
2 ICH : 2 - - -
3 ICH : 3 - - -
4 ICH : 4 - - -
5 ICH : 5 - - -
6 ICH : 6 - - -
7 ICH : 7 - - -
8 ICH : 8 - - -
9 ICH : 9 - - -
MENU
FUNCTION
MENU MEN - - -
SELECT SEL - - -
RETURN RTN - - -
EXIT EXT - - -
ARROW LEFT ARL - - -
ARROW RIGHT ARR - - -
ARROW UP ARU - - -
ARROW DOWN ARD - - -
OPTION (SUB MENU) SUB - - -
RED RED - - -
GREEN GRN - - -
YELLOW YEL - - -
BLUE BLU - - -
VIERA TOOLS VTL - - -

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6 Service Mode
6.1. How to enter into Service Mode
While pressing [VOLUME ( - )] button of the main unit, press [0] 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.
6.1.1. 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
[RED] button...All Sub items Selection in forward direction
[GREEN] button...All Sub items Selection in reverse direction
[VOL] button...Value of sub items change in forward direction ( + ), in reverse direction ( - )

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6.1.2. 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.
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.

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6.2. Option - Mirror
Picture can be reversed left and right or up and down.
00 : Default (Normal picture is displayed)
01 : Picture is reversed left and right.
02 : Picture is reversed up and down.
Hint : If the defective symptom (e.g. Vertical bar or Horizontal bar) is moved by selection of this mirror, the possible cause is in
A-board or D-board.
6.3. Service tool mode
6.3.1. How to access
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.
6.3.2. 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 will be cleared by [Self-check indication and forced to factory shipment setting].
6.3.3. POWER ON Time, On/Off
Note : To display TIME/COUNT menu, highlight position, then press MUTE for 3 sec.
Time : Cumulative power on time, indicated hour : minute by decimal
On/Off : Number of On/Off switching by decimal
Note : This indication will not be cleared by either of the self-checks or any other command.
6.3.4. Exit
1. Disconnect the AC cord from wall outlet or switch off the power with [ Power ] button on the main unit.

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6.4. Hotel mode
1. Purpose
Restrict a function for hotels.
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 second).
[TV] : Vol. [Down] + [REMOTE] : AV (3 times)
Then, the Hotel mode setup menu is displayed.
3. To exit the Hotel mode setup menu
Disconnect AC power cord from wall outlet.
4. Explain the Hotel mode setup menu
item Function
Hotel Mode Select hotel mode ON/OFF
Initial INPUT Select input signal modes.
Set the input, when each time power is switched
on.
Selection :
Off/Analog/DVB-S/DVB-C/DVB-T/AV1/AV2/AV2S/
AV3/COMPONENT/PC/HDMI1/HDMI2/HDMI3/
HDMI4
• Off: give priority to a last memory. However,
Euro model is compulsorily set to TV.
• AVnS/AVnC: only Euro model selectable
• PC: selectable with VGA option
Initial POS Select programme number.
Selection :
Off/0 to 99
• Off: give priority to a last memory
Initial VOL level Adjust the volume when each time power is
switched on.
Selection/Range :
Off/0 to 100
• Off: give priority to a last memory
Maximum VOL
level
Adjust maximum volume.
Range :
0 to 100
Button lock Select local key conditions.
Selection :
Off/SETUP/MENU/ALL
• 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.)
• ALL: altogether invalid.
Remote lock Select remote control key conditions.
Selection :
Off/SETUP/MENU
• Off: altogether valid
• SETUP: only Setup menu is invalid
• MENU: Picture/Sound/Setup menu are invalid
Private Information Select private information for VIERA Cast is Keep
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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6.5. Data Copy by SD Card
6.5.1. 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 SD card 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 SD card and then copy to other
TVs.
6.5.2. Preparation
Make pwd file as startup file for (a) or (b) in a empty SD card.
1. Insert a empty SD card to your PC.
2. Right-click a blank area in a SD card 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 SD card.

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6.5.3. Data copy from TV set to SD Card
1. Turn on the TV set.
2. Insert SD card with a startup file (pwd file) to SD slot.
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 SD card.
It takes around 2 to 6 minutes maximum for copying.
4. After the completion of copying to SD card, remove SD card from TV set.
5. Turn off the TV set.
Note:
Following new folder will be created in SD card for data from TV set.
(a) For Board replacement : user_setup
(b) For Hotel : hotel

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6.5.4. Data copy from SD Card to TV set
1. Turn on the TV set.
2. Insert SD card with Data to SD slot.
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 SD card to TV set.
4. After the completion of copying to SD card, remove SD card 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.