Panasonic TX-P42U20B / TX-P42U20E / TX-PR42U20 Service Manual ▷ View online
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.
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.
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
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.
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.
ever, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.
6
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
Digital Signal Processor, PEAKS-sLD
Format Converter, Plasma AI, Sub-Field Processor
Key Switch
Speaker out, AV Terminal, HDMI in, SD Card
Digital Signal Processor, PEAKS-sLD
Format Converter, Plasma AI, Sub-Field Processor
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.
Non serviceable.
SM-Board should be exchanged for service.
K
Remote receiver, Power LED, C.A.T.S. sensor
S
Power Switch
7
3.2.
Applicable signals
COMPONENT (Y, PB, PR), HDMI
* Mark: Applicable input signal for Component (Y, PB, PR) and HDMI
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.
• 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
× 480 @60 Hz
31.47
60.00
750 (720) / 60p
45.00
60.00
1,125 (1,080) / 60p
67.50
60.00
8
4 Specifications
Power Source
AC 220-240 V, 50 / 60 Hz
Power Consumption
275 W
Power Consumption in Standby mode
0.4 W (Without monitor out recording)
15 W (With monitor out recording)
15 W (With monitor out recording)
Display panel
Aspect Ratio
16:9
Visible screen size
106 cm (diagonal)
921 mm (W)
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
160 mm
× 40 mm × 2 pcs, 6 Ω
Audio Output
20 W ( 10 W + 10 W )
Headphones
M3 (3.5 mm) stereo mini Jack
× 1
Receiving Systems / Band name (B)
PAL I
UHF E21 - E68
PAL 525/60
Playback of NTSC tape from some PAL Video recorders (VCR)
or NTSC disc playback from DVD player and recorder.
or NTSC disc playback from DVD player and recorder.
DVB-T
Digital terrestrial services via UHF aerial input.
M.NTSC
Playback from M. NTSC Video recorders (VCR)
NTSC (AV input only)
Playback from NTSC Video recorders (VCR)
Receiving Systems / Band name (E)
PAL B, G, H, I, SECAM B, G, SECAM L, L’
VHF E2 - E12
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 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
Countries that DVB-C is available: Germany, Switzerland,
Denmark, Sweden, Norway, Finland, Netherlands
• Check the latest information on the available services at the following website. (English only)
http://panasonic.jp/support/global/cs/
Receiving Systems / Band name (R)
PAL D, K, SECAM D, K
VHF R1 - R2
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))
(MPEG2 and MPEG4-AVC(H.264))
• Check the latest information on the available services at the following website. (English only)
http://panasonic.jp/support/global/cs/
Aerial - input
UHF (B), VHF / UHF (E/R)
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)
P
B
, P
R
± 0.35 V [p-p]
AUDIO L - R
RCA PIN Type
× 2
0.5 V [rms]
Others
HDMI1 / 2
TYPE A Connectors
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