Panasonic Viera TX-P42S20L User manual

ORDER NO.PCZ1003015CE
Plasma Television
Model No. TX-P42S20E
TX-P42S20ES
TX-P42S20L
TX-PF42S20
TX-PR42S20
GPF13 E Chassis
A WARNING
This service information is esigne for experience repair technicians only an is not esigne for use by the general public.
It oes not contain warnings or cautions to a vise non-technical in ivi uals of potential angers in attempting to service a pro uct.
Pro ucts powere by electricity shoul be service or repaire only by experience professional technicians. Any attempt to service
or repair the pro uct or pro ucts ealt with in this service information by anyone else coul result in serious injury or eath.
IMPORTANT SAFETY NOTICE
There are special components use in this equipment which are important for safety. These parts are marke by A in the Schematic
Diagrams, Circuit Boar Diagrams, Explo e Views an Replacement Parts List. It is essential that these critical parts shoul be replace
with manufacturer's specifie parts to prevent shock, fire or other hazar s. Do not mo ify the original esign without permission of
manufacturer.
Panasonic © Panasonic Corporation 2010.
Unauthorize copying an istribution is a violation
of law.

TABLE OF CONTENTS
1 Safety Precautions ----------
1.1. General Gui elines —
1.2. Touch-Current Check-
2 Warning---------------------------
PAGE
------ 3
------ 3
------ 3
------ 4
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatically Sensitive (ES) Devices ---------- 4
2.2. About lea free sol er (PbF)-----------------------------5
3 Service Navigation ---------------------------------------------------6
3.1. PCB Layout-----------------------------------------------------6
3.2. Applicable signals---------------------------------------------7
4 Specifications--------------------------------------------------------- 8
105 Technical escriptions -----------------------------------
5.1. Specification of KEY for CI Plus, DTCP-IP an
One-to-One ----------------------------------------------------10
6 Service Mode----------------------------------------------------------11
6.1. How to enter into Service Mo e-------------------------11
6.2. Option - Mirror-------------------------------------------------13
6.3. Service tool mo e--------------------------------------------13
6.4. Hotel mo e-----------------------------------------------------14
6.5. Data Copy by SD Car ------------------------------------15
7 Troubleshooting Guide ------------------------------------------- 18
7.1. Check of the IIC bus lines---------------------------------18
7.2. Power LED Blinking timing chart ----------------------- 19
7.3. No Power-------------------------------------------------------20
7.4. No Picture ------------------------------------------------------ 21
7.5. Local screen failure ----------------------------------------- 22
8 Service Fixture & Tools ------------------------------------------ 23
8.1. SC jig ------------------------------------------------------------ 23
9 isassembly and Assembly Instructions-----------------24
9.1. Remove the Rear cover----------------------------------24
9.2. Remove the AC inlet--------------------------------------24
9.3. Remove the P-Boar --------------------------------------24
9.4. Remove the Si e terminal cover an the Si e
shiel metal----------------------------------------------------24
9.5. Remove the Tuner unit-----------------------------------25
9.6. Remove the A-Boar --------------------------------------25
9.7. Remove the Speakers------------------------------------25
9.8. Remove the SM-Boar -----------------------------------25
9.9. Remove the SC-Boar ------------------------------------26
9.10. Remove the SS2-Boar ----------------------------------26
9.11. Remove the SS-Boar ------------------------------------26
9.12. Remove the Hanger metals an the Stan
brackets--------------------------------------------------------- 26
9.13. Remove the C1-Boar ------------------------------------27
9.14. Remove the C2-Boar ------------------------------------27
9.15. Remove the Plasma panel section from the
Cabinet assy (glass)----------------------------------------27
9.16. Remove the Glass hol ers ----------------------------- 28
9.17. Remove the K-Boar -------------------------------------- 28
9.18. Replace the plasma panel-------------------------------28
10 Measurements and Adjustments ---------------------------- 29
10.1. A justment-----------------------------------------------------29
11 Block iagram ------------------------------------------------------ 33
11.1. Main Block Diagram --------------------------------------- 33
11.2. Block (1/4) Diagram ---------------------------------------34
11.3. Block (2/4) Diagram---------------------------------------35
11.4. Block (3/4) Diagram---------------------------------------36
11.5. Block (4/4) Diagram---------------------------------------37
12 Wiring Connection iagram
12.1. Caution statement. ------
12.2. Wiring (1) -------------------
12.3. Wiring (2) -------------------
13 Schematic iagram ------------
PAGE
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13.1. Schematic Diagram Note -------------------------
13.2. P-Boar (1/4) Schematic Diagram ------------
13.3. P-Boar (2/4) Schematic Diagram ------------
13.4. P-Boar (3/4) Schematic Diagram ------------
13.5. P-Boar (4/4) Schematic Diagram ------------
13.6. A-Boar (1/19) Schematic Diagram -----------
13.7. A-Boar (2/19) Schematic Diagram -----------
13.8. A-Boar (3/19) Schematic Diagram -----------
13.9. A-Boar (4/19) Schematic Diagram -----------
13.10. A-Boar (5/19) Schematic Diagram -----------
13.11. A-Boar (6/19) Schematic Diagram -----------
13.12. A-Boar (7/19) Schematic Diagram -----------
13.13. A-Boar (8/19) Schematic Diagram -----------
13.14. A-Boar (9/19) Schematic Diagram -----------
13.15. A-Boar (10/19) Schematic Diagram ---------
13.16. A-Boar (11/19) Schematic Diagram ---------
13.17. A-Boar (12/19) Schematic Diagram ---------
13.18. A-Boar (13/19) Schematic Diagram ---------
13.19. A-Boar (14/19) Schematic Diagram ---------
13.20. A-Boar (15/19) Schematic Diagram ---------
13.21. A-Boar (16/19) Schematic Diagram ---------
13.22. A-Boar (17/19) an K-Boar Schematic
Diagram -------------------------------------------------------- 62
13.23. A-Boar (18/19) Schematic Diagram ----------------- 63
13.24. A-Boar (19/19) Schematic Diagram ----------------- 64
13.25. C1-Boar (1/2) Schematic Diagram ------------------ 65
13.26. C1-Boar (2/2) Schematic Diagram ------------------ 66
13.27. C2-Boar (1/2) Schematic Diagram ------------------ 67
13.28. C2-Boar (2/2) Schematic Diagram ------------------ 68
13.29. SC-Boar (1/4) Schematic Diagram ------------------ 69
13.30. SC-Boar (2/4) Schematic Diagram ------------------ 70
13.31. SC-Boar (3/4) Schematic Diagram -------------------71
13.32. SC-Boar (4/4) Schematic Diagram ------------------ 72
13.33. SS-Boar (1/2) Schematic Diagram ------------------ 73
13.34. SS-Boar (2/2) an SS2-Boar Schematic
Diagram -------------------------------------------------------- 74
14 Printed Circuit Board--------------------------------------------- 75
14.1. P-Boar ---------------------------------------------------------75
14.2. K an SS2-Boar -------------------------------------------78
14.3. A-Boar ---------------------------------------------------------79
14.4. C1-Boar --------------------------------------------------------81
14.5. C2-Boar ------------------------------------------------------- 82
14.6. SC-Boar -------------------------------------------------------83
14.7. SS-Boar ------------------------------------------------------ 85
15 Exploded View and Replacement Parts List ------------- 87
15.1. Explo e View an Mechanical Replacement
Parts List------------------------------------------------------- 87
15.2. Electrical Replacement Parts List --------------------- 95
2

1 Safety Precautions
1.1. General Guidelines
1. When servicing, observe the original lea ress. If a short circuit is foun , replace all parts which have been overheate or
amage by the short circuit.
2. After servicing, see to it that all the protective evices such as insulation barriers, insulation papers shiel s are properly
installe .
3. After servicing, make the following leakage current checks to prevent the customer from being expose to shock hazar s.
4. When servicing, observe the original lea ress. If a short circuit is foun , replace all parts which have been overheate or
amage by the short circuit.
5. After servicing, see to it that all the protective evices such as insulation barriers, insulation papers shiel s are properly
installe .
6. After servicing, make the following leakage current checks to prevent the customer from being expose to shock hazar s.
1.2. Touch-Current Check
1. Plug the AC cor irectly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a measuring network for touch currents between each expose metallic part on the set an a goo earth groun
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 expose metallic part, an measure the voltage at each point.
5. Reserve the AC plug in the AC outlet an repeat each of the above measure.
6. The potential at any point (TOUGH CURRENT) expresse as voltage U1 an U2, oes not excee the following values:
For a. c.: U1 = 35 V (peak) an U2 = 0.35 V (peak);
For . c.: U1 = 1.0 V,
Note:
The limit value of U2 = 0.35 V (peak) for a. c. an U1 = 1.0 V for . c. correspon to the values 0.7 mA (peak) a. c. an 2.0
mA . c.
The limit value U1 = 35 V (peak) for a. c. correspon to the value 70 mA (peak) a. c. for frequencies greater than 100 kHz.
7. In case a measurement is out of the limits specifie , there is a possibility of a shock hazar , an the equipment shoul be
repaire an rechecke before it is returne to the customer.
Measuring network for TOUCH CURRENTS
COLD
WATER PIPE
(EARTH GROUND)
Rs=
1500Q_L Cs= 0.22|jF
10kQ
-1 k 1
------- 1
Ro=
----------------
J 500Q
'U1 =
r
= 0.022|jF (V)
J Q L jJ J U U i i U 1 —|— и . и ^ г ф Г ^ V J | U2 (V)
APPLIANCES
EXPOSED
METAL PARTS
Resistance values in ohms (Q)
V: Voltmeter or oscilloscope
(r.m.s. or peak rea ing)
Input resistance: > 1 MQ
Input capacitance: < 200 pF
Frequency range: 15 Hz to 1 MHz an .c. respectively
NOTE - Appropriate measures shoul be taken to obtain the correct value in case of non-sinusoi al waveforms.
Figure 1
3

2 Warning
2.1. Prevention of Electrostatic ischarge (ES ) to Electrostatically
Sensitive (ES) evices
Some semicon uctor (soli state) evices can be amage easily by static electricity. Such components commonly are calle Elec
trostatically Sensitive (ES) Devices. Examples of typical ES evices are integrate circuits an some fiel -effect transistors an
semicon uctor [chip] components. The following techniques shoul be use to help re uce the inci ence of component amage
cause by electrostatic ischarge (ESD).
1. Imme iately before han ling any semicon uctor component or semicon uctor-equippe assembly, rain off any ESD on your
bo y by touching a known earth groun . Alternatively, obtain an wear a commercially available ischarging ESD wrist strap,
which shoul be remove for potential shock reasons prior to applying power to the unit un er test.
2. After removing an electrical assembly equippe with ES evices, place the assembly on a con uctive surface such as alumi
num foil, to prevent electrostatic charge buil up or exposure of the assembly.
3. Use only a groun e -tip sol ering iron to sol er or unsol er ES evices.
4. Use only an anti-static sol er removal evice. Some sol er removal evices not classifie as [anti-static (ESD protecte )] can
generate electrical charge sufficient to amage ES evices.
5. Do not use freon-propelle chemicals. These can generate electrical charges sufficient to amage ES evices.
6. Do not remove a replacement ES evice from its protective package until imme iately before you are rea y to install it. (Most
replacement ES evices are package with lea s electrically shorte together by con uctive foam, aluminum foil or compara
ble con uctive material).
7. Imme iately before removing the protective material from the lea s of a replacement ES evice, touch the protective material
to the chassis or circuit assembly into which the evice will be installe .
Caution
Be sure no power is applie to the chassis or circuit, an observe all other safety precautions.
8. Minimize bo ily motions when han ling unpackage replacement ES evices. (Otherwise ham less motion such as the brush
ing together of your clothes fabric or the lifting of your foot from a carpete floor can generate static electricity (ESD) sufficient
to amage an ES evice).
4

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 mo el uses Pb Free sol er in it's manufacture ue to environmental conservation issues. For service an repair work, we'
suggest the use of Pb free sol er as well, although Pb sol er may be use .
PCBs manufacture using lea free sol er will have the PbF within a leaf Symbol PbF stampe on the back of PCB.
Caution
• Pb free sol er has a higher melting point than stan ar sol er. Typically the melting point is 50 ~ 70 °F (30~40 °C) higher. Please
use a high temperature sol ering iron an set it to 700 ± 20 °F (370 ± 10 °C).
• Pb free sol er will ten to splash when heate too high (about 1100 °F or 600 °C).
If you must use Pb sol er, please completely remove all of the Pb free sol er on the pins or sol er area before applying Pb sol
er. If this is not practical, be sure to heat the Pb free sol er until it melts, before applying Pb sol er.
• After applying PbF sol er to ouble layere boar s, please check the component si e for excess sol er which may flow onto the
opposite si e. (see figure below)
component component
remove all of the ^1П\
excess sol er
2.2. About lead free solder (PbF)
slice
\
sol er
Suggested Pb free solder
There are several kin s of Pb free sol er available for purchase. This pro uct uses Sn+Ag+Cu (tin, silver, copper) sol er. How
ever, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) sol er can also be use .
5

3 Service Navigation
3.1. PCB Layout
Remove the Rear cover
(1) (1)
(2) (2) (2) (2) (2)
Remove:
2screws (1) THEL052Z
11screws (2) XTB4+12GFJK
5screws (3) THEJ0339
2screws (4) XSB3+6FJ
2screws (5) XTV3+10JFJK
2screws (6) XYN3+F10FJK
4screws (7) TKKL5493
Boar Name Function
P Power Supply
A DC-DC Converter, Tuner
Speaker out, AV Terminal, HDMI in, SD Car
Digital Signal Processor, PEAKS-sLD
Format Converter, Plasma AI, Sub-Fiel Processor
Power Switch, Key Switch
K Remote receiver, Power LED, C.A.T.S. sensor
Boar Name Function
C1 Data Driver (Lower Right)
C2 Data Driver (Lower Left)
SC Scan Drive
SS Sustain Drive
SS2 Sustain out (Lower)
SM Scan out
Non serviceable.
SM-Boar shoul be exchange for service.
6

3.2. Applicable signals
COMPONENT (Y, PB, PR), H MI
* Mark: Applicable input signal for Component (Y, PB, PR) an HDMI
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 *
PC (from H MI terminal)
Applicable input signal for PC is basically compatible to HDMI stan ar timing.
Signal name Horizontal frequency (kHz) Vertical frequency (Hz)
640 x 480 @60 Hz 31.47 60.00
750 (720) / 60p 45.00 60.00
1,125 (1,080) / 60p 67.50 60.00
Note
• Signals other than above may not be isplaye properly.
• The above signals are reformatte for optimal viewing on your isplay.
• PC signal is magnifie or compresse for isplay, so that it may not be possible to show fine etail with sufficient clarity.
7

4 Specifications
Power Source
Power Consumption
On mode Average Power Consumption
Power Consumption in Standby mode
isplay panel
Aspect Ratio
Visible screen size
Number of pixels
Sound Speaker
Audio Output
Headphones
Receiving Systems / Band name
Aerial - input
Operating Conditions
Connection Terminals
AV1 (Scart terminal)
AV2 (Scart terminal)
AV3 VI EO
AU IO L - R
COMPONENT
VI EO
AU IO L - R
Others
H MI1 / 2 / 3
Card slot
Output
AU IO L - R
IGITAL AU IO OUT
imensions (W x H x )
Mass
AC 220-240 V, 50 / 60 Hz
275 W
117 W
0.4 W (Without monitor out recor ing)
15 W (With monitor out recor ing)
16:9
106 cm ( iagonal)
921 mm (W) x 518 mm (H)
2,073,600 (1,920 (W) x 1,080 (H)) [5,760 x 1,080 ots]
160 mm x 40 mm x 2 pcs, 6 Q
20 W ( 10 W + 10 W )
M3 (3.5 mm) stereo mini Jack x 1
PAL B, G, H, I, SECAM B, G, SECAM L, L’
VHF E2 - E12
VHF A - H (ITALY)
CATV (S01 - S05)
CATV S11 - S20 (U1 - U10)
PAL , K, SECAM , K
VHF R1 - R2
VHF R6 - R12
PAL 525/60
M.NTSC
NTSC (AV input only)
VB-T
VB-C
VHF H1 - H2 (ITALY)
UHF E21 - E69
CATV S1 - S10 (M1 - M10)
CATV S21 - S41 (Hyperban )
VHF R3 - R5
UHF E21 - E69
Playback of NTSC tape from some PAL Vi eo recor ers (VCR)
Playback from M. NTSC Vi eo recor ers (VCR)
Playback from NTSC Vi eo recor ers (VCR)
Digital terrestrial services (MPEG2 an MPEG4-AVC(H.264))
Digital cable services (MPEG2 an MPEG4-AVC(H.264))
Countries that DVB-C is available: Germany, Switzerlan ,
Denmark, Swe en, Norway, Finlan , Netherlan s
• Check the latest information on the available services at the following website. (English only)
http://panasonic.jp/support/global/cs/
VH F/ UHF
Temperature:
Humi ity: 0 °C - 35 °C 20 % - 80 % RH (non-con ensing)
21 Pin terminal (Au io/Vi eo in, Au io/Vi eo out, RGB in, Q-Link)
21 Pin terminal (Au io/Vi eo in, Au io/Vi eo out, RGB in, S-Vi eo in, Q-Link)
RCA PIN Type x 1
RCA PIN Type x 21.0 V [p-p] (75 Q) 0.5 V [rms]
Y
Pb, Pr
RCA PIN Type x 2
1.0 V [p-p] (inclu ing synchronization)
± 0.35 V [p-p]
0.5 V [rms]
TYPE A Connectors
HDMI1 / 3 : HDMI (Version 1.3a with x.v. Colour.)
HDMI2 : HDMI (Version 1.4 with Au io Return Channel) an
HDMI (Version 1.3a with x.v. Colour.)
• This TV supports [ HDAVI Control 5 ] function.
SD Car slot x 1
Common Interface slot x 1
RCA PIN Type x 2 0.5 V [rms] (high impe ance)
PCM / Dolby Digital / DTS, Fiber optic
1.029 mm x 704 mm x 334 mm (With Pe estal)
1.029 mm x 661 mm x 93 mm (TV only)
24.5 kg Net (With Pe estal)
23.0 kg Net (TV only)
8

Note
• Design an Specifications are subject to change without notice. Mass an Dimensions shown are approximate.
• This equipment complies with the EMC stan ar s liste below.
EN55013, EN61000-3-2, EN61000-3-3, EN55020.
9

5 Technical escriptions
5.1. Specification of KEY for CI Plus, TCP-IP and One-to-One
5.1.1. General information:
1. EEPROM (IC8950) for spare parts has the see of KEY for each.
2. The final KEY ata will be generate by Peaks IC (IC8001) when SELF CHECK was one an are store in both Peaks IC
(IC8001) an EEPROM (IC8950).
Three KEY are not generate for all mo els.
The necessary KEY are only generate an store epen on the feature of mo els.
5.1.2. Replacement of ICs:
When Peaks IC (IC8001) is replace , EEPROM (IC8950) shoul be also replace with new one the same time.
When EEPROM (IC8950) is replace , Peaks IC (IC8001) is not necessary to be replace the same time.
After the replacement of IC, SELF CHECK shoul be one to generate the final KEY ata.
How to SELF CHECK: While pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more
than 3 secon s.
TV will be force to the factory shipment setting after this SELF CHECK.
5.1.3. Model and Keys:
Mo el No. Keys
CI Plus DTCP-IP One-to-One
(For USB Rec.)
TX-P42S20E Yes None None
TX-P42S20ES Yes None None
TX-P42S20L Yes None None
TX-PF42S20 None None None
TX-PR42S20 None None None
10