Read Panasonic TX-L42E30E / TX-LF42E30 / TX-LR42E30 Service Manual online
Service Manual
LCD Television
TX-L42E30E
TX-LF42E30
TX-LR42E30
LA18 Chassis
Specifications
Power
Source:
220-240V AC, 50 / 60Hz
Rated Power Consumption:
102W
Stand-by Power Consumption:
0.3W (Without monitor out recording)
14W (With monitor out recording)
Aerial
Impedance:
75
unbalanced, Coaxial Type
Receiving System:
DVB-T (Digital Terrestrial Services (MPEG2 and MPEG4-AVC
(H.264)
)
DVB-C (Digital cable services (MPEG2 and MPEG4-AVC
(H.264)
)
PAL-I/H, B/G, D/K
SECAM B/G, D/K, L/L’
PAL-525/60 (AV only)
M.NTSC (AV only)
NTSC (AV only)
Receiving Chanels:
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)
VHF R1-R2 VHF R3-R5
VHF
R6-R12
Aerial - Rear:
VHF/UHF
Operating Conditions:
Temperature: 0°C
35°C
Humidity:
20%
80% RH (non condensing)
and
ORDER No. PCZ1102010CE
Intermediate Frequency:
Video/Audio
Video
38.9MHz, 33.9MHz
Audio
33.4MHz (B/G), 33.16MHz (A2)
33.05MHz (NICAM B/G, D/K, L)
32.4MHz (D/K), 32.66MHz (CZ STEREO)
40.4MHz
(L
’
), 39.75MHz (L
’
NICAM)
Colour
34.47MHz (PAL)
34.5MHz, 34.65MHz (SECAM)
38.3MHz, 38.15MHz (SECAM L
’
)
Terminals:
AV1 IN
Video (21 pin)
1V p-p 75
Audio (21 pin)
500mV rms 10k
RGB (21 pin)
0.7V p-p 75
AV1 OUT
Video (21 pin)
1V p-p 75
Audio (21 pin)
500mV rms 1k
AV2 IN
Video (RCAx1)
1V p-p 75
AUDIO IN
Audio (RCAx2)
500mV rms 10k
(used for HDMI4_AV2 audio IN)
COMPONENT
Video (RCAx3)
Y:1V p-p 75
(including synchronization)
Pb, Pr: ±0.35V p-p 75
AUDIO IN
Audio (RCAx2)
500mV rms 10k
(used for HDMI1/2/3_Component Audio IN)
HDMI, HDMI2, HDMI3, HDMI4
Type A Connectors
HDMI
1/3/4 :HDMI (Version 1.4 with Content Type) Deep Colour
HDMI 2 :HDMI (Version 1.4 with Content Type, Audio Return Channel) Deep Colour
This TV supports “HDAVI Control 5” function.
AUDIO OUT
Audio (RCAx2)
500mV rms 1k
(high impedance)
DIGITAL AUDIO OUT
PCM / Dolby digital / DTS, Fiber optic
USB 1/2/3
USB 2.0 DC 5V Max 500mA
PC
HIGH-DENSITY D_SUB 15PIN R,G,B: 700mV p-p 75
HD,VD/TTL Level 2-5V p-p (high impedance)
ETHERNET
RJ45, IEEE802.3 10BASE-T / 100BASE-TX
CARD
SLOT
E30E, LFE30
LRE30
SD CARD slot x1
SD CARD slot x1
Common interface (Complies with CI+)slot x1 Common interface slot x1
LCD screen:
VVX42F115G00
1920 x 1080, 16:9
Visible Diagonal 1060mm
Audio
Output:
20W (2 x 10W), 10% THD
Headphones:
3.5mm,
8
Impedance
Accessories supplied :
Remote Control
2 x R6 (UM3) Batteries
Dimensions:
Height: Width: Depth:
Including TV stand
646mm 1002mm 288mm
TV set only
611mm 1002mm 75mm
Mass:
Including TV stand
19.0kg
TV set only
15.5kg
Specifications are subject to change without notice.
Mass and dimensions shown are approximate.
This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not
contain warnings or cautions to advise non-technical individuals of potencial dangers in attempting to service a product. Products
powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the
product or products deal within this service information by anyone else could result in serious injury or death.
contain warnings or cautions to advise non-technical individuals of potencial dangers in attempting to service a product. Products
powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the
product or products deal within this service information by anyone else could result in serious injury or death.
Warning
2
CONTENTS
SAFETY PRECAUTIONS ........................................... 4
GENERAL
GUIDE LINES...................................... 4
TOUCH – CURRENT CHECK............................... 4
PREVENTION OF ELECTROSTATIC DISCHARGE
(ESD) TO ELECTROSTATICALLY SENSITIVE (ES)
DEVICES .................................................................... 5
ABOUT LEAD FREE SOLDER (PBF)......................... 6
SUGGESTED
PB
FREE SOLDER........................ 6
APPLICABLE SIGNALS.............................................. 7
SERVICE HINTS ........................................................ 8
CHASSIS BOARD LAYOUT ....................................... 9
LOCATION OF LEAD WIRING ................................... 9
TECHNICAL DESCRIPTION ................................….10
SPECIFICATION OF KEY FOR CI PLUS,
DTCP-IP, ONE-TO-ONE AND WIDEVINE .......... 10
GENERAL
INFORMATION ................................. 10
REPLACEMENT
OF ICS..................................... 10
MODEL
AND KEYS ............................................ 10
SETTING INSPECTION............................................ 11
SELF CHECK ........................................................... 12
HOTEL MODE .......................................................... 17
DATA COPY BY SD CARD....................................... 18
DATA COPY FROM TV SET TO SD CARD ............. 19
DATA COPY FROM SD CARD TO TV SET ............. 20
OPTION BYTES DESCRIPTION .............................. 21
ADJUSTMENT METHOD.......................................... 22
WIRING DIAGRAM ................................................... 23
BLOCK DIAGRAM (1 OF 2) ...................................... 24
PARTS LOCATION................................................... 26
REPLACEMENT PARTS LIST.................................. 28
SCHEMATIC DIAGRAMS ......................................... 39
A-BOARD (1 OF 18) SCHEMATIC DIAGRAM .... 40
P-BOARD (1 OF 2) SCHEMATIC DIAGRAM ...... 58
LD-BOARD (1 OF 2) SCHEMATIC DIAGRAM .... 60
KA-BOARD.......................................................... 62
CONDUCTOR VIEWS .............................................. 63
POWER LED BLINKING TIMING CHART ................ 13
SERVICE MODE FUNCTION ................................... 14
SERVICE ................................................................ 15
SERVICE TOOL MODE............................................ 16
3
Safety Precautions
General Guide Lines
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 touch current checks to prevent the customer from being exposed to shock hazards.
4. Always ensure cover label TBM4GU113 is correctly replaced before returning to customer (see Fig.1).
4. Always ensure cover label TBM4GU113 is correctly replaced before returning to customer (see Fig.1).
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
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 Fig. 2.
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 U1 and U2, does not exceed the following values:
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 U1 and 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,
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.
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.
Fig. 2
TO
APPLIANCES
EXPOSED
METAL PARTS
APPLIANCES
EXPOSED
METAL PARTS
Resistance values in ohms (
)
V
R
0
=500
R
S
=1500
C
S
=0.22
F
10k
0.022
F
COLD
WATER PIPE
(EARTH GROUND)
WATER PIPE
(EARTH GROUND)
V: Voltmetr or oscilloscope
(r.m.s. or peak reading)
(r.m.s. or peak reading)
Measuring network for TOUCH CURRENTS
Input resistance:
1M
Input capacitance:
200pF
Frequency range: 15Hz to 1MHz and d.c.respectively
NOTE – Appropriate measures should be taken to obtain the correct value in case of non-sinusoidal waveforms
U
2
(V)
Fig. 1
U
1
(V)
4
