Panasonic TX-L42GP20E Schematic

ORDER No. PCZ1005063CE

Service Manual

Colour LCD Television

TX-L42G20E

TX-L42G20ES

TX-LF42G20S

GLP25 Chassis

Specifications

Power Source: 220-240V AC, 50Hz

Rated Power Consumption: 188W

Stand-by Power Consumption: 0.25W (Without monitor out recording)

17W (With monitor out recording)

Aerial Impedance: 75Ω unbalanced, Coaxial Type Receiving System: PAL-I/H, B/G, D/K

SECAM B/G, D/K, L/L’ PAL-525/60 (AV only) DVB-T (Digital Terrestrial Services (MPEG2 and MPEG4-AVC(H.264)) DVB-C (Digital cable services (MPEG2 and MPEG4-AVC(H.264))

M.NTSC (AV only)

NTSC (AV only)

PC signals: VGA, SVGA, WVGA, XGA, SXGA, WXGA (compressed)

Receiving Chanels:

VHF A-H (ITALY) VHF R1-R2 VHF R3-R5 VHF R6-R12 UHF E21-E69 CATV (S01-S05) CATV S1-S10 (M1-M10) CATV S11-S20 (U1-U10) CATV S21-S41 (Hyperband)

Aerial - Rear: VHF/UHF

Operating Conditions: Temperature :0°C ÷ 35°C

Humidity :20% ÷ 80% RH (non condensing)

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’)

VHF E2-E12 VHF H1-H2 (ITALY)

Horizontal scanning frequency 31 – 69 kHz Vertical scanning frequency 59 – 86 Hz

and

Terminals:

AV1 IN Video (21 pin) 1V p-p 75Ω Audio (21 pin) 500mV rms 10kΩ RGB (21 pin) 0.7V p-p 75Ω

AV1 OUT Video (21 pin) 1V p-p 75Ω Audio (21 pin) 500mV rms 1kΩ

AV2 IN Video (21 pin) 1V p-p 75Ω Audio (21 pin) 500mV rms 10kΩ RGB (21 pin) 0.7V p-p 75Ω S-video IN (21-pin) Y: 1V p-p 75Ω C:0.3V p-p 75Ω

AV2 OUT Video (21 pin) 1V p-p 75Ω Audio (21 pin) 500mV rms 1kΩ

AV3 IN Audio (RCAx2) 500mV rms 10kΩ(used for HDMI4, AV3-AUDIO) Video (RCAx1) Y:1V p-p 75Ω

HDMI1, HDMI2, HDMI3, HDMI4 Type A Connectors

HDMI

1/3/4 :HDMI (Version 1.3a with Deep Colour) :HDMI (Version 1.4 with Content Type) HDMI 2 :HDMI (Version 1.4 with Content Type, Audio Return Channel) :HDMI (Version 1.3a with Deep Colour) This TV supports “HDAVI Control 5” function.

COMPONENT Video (RCAx3) Y:1V p-p 75Ω (including synchronization)

Pb, Pr: ±0.35V p-p 75Ω

AUDIO IN Audio (RCAx2) 500mV rms 10kΩ (used for HDMI1/2/3, COMPONENT-AUDIO)

AUDIO OUT Audio (RCAx2) 500mV rms 1kΩ (high impedance) DIGITAL AUDIO OUT PCM / Dolby digital,DTS, Fiber optic

USB 1/2 USB 2.0 DC 5V Max 500mA CARD SLOT SD Card slot x1 Common Interface slot x1

PC HIGH-DENSITY D_SUB 15PIN R,G,B: 700mV p-p 75Ω HD,VD/TTL Level 2-5V p-p (high impedance)

ETHERNET RJ45, IEEE802.3 10BASE-T / 100BASE-TX

LCD screen: L5EDDAT00006

1,920 x 1,080 XGA, 16:9 Visible Diagonal 1060mm

Audio Output: 20W (2x10W), 10% THD

Headphones: 3,5mm, 8Ω Impedance Accessories supplied : Remote Control 2 x R6 (UM3) Batteries

Dimensions:

Height: Width: Depth:

Including TV stand 682mm 1021mm 310mm

TV set onl y 637mm 1021mm 109mm

Mass:

Including TV stand 20.5kg TV set only 17.5kg

Specifications are subject to change without notice. Weights and dimensions shown are approximate.

Warning

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.

2

6. The potential at any point (TOUCH CURRENT) expressed as voltage U1 and U2, does not exceed the follo wing 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.

COLD WATER PIPE (EARTH GROUND)

TO APPLIANCES EXPOSED

METAL PARTS Resistance values in ohms (Ω) V: Voltmetr or oscilloscope

(r.m.s. or peak reading)

NOTE – Appropriate measures should be taken to obtain the correct value in case of non-sinusoidal waveforms

Fig. 1

Measuring network for TOUCH CURRENTS

C

R

=1500Ω

S

R0=500Ω

Input resistance: ≥ 1M Input capacitance: ≤ 200pF Frequency range: 15Hz to 1MHz and d.c.respectively

Fig. 2

=0.22μF

S

U

10k

1

0.022μF

V

U2 (V)

4

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 handli ng any semiconductor component or semiconductor-equipped assembly, drain off an y 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 build up or exposure of the assembly.

3. Use only a grounded-tip s oldering 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-propelle d 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 cond uctive foam, aluminum foil or comparable conductive material).

7. Immediately before removing the protectiv e material from the le ads 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 harmless 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).

There are special components used in this equipment which are important for safety. These parts are marked by in schematic diagrams, exploded views and replacement parts list. It is essential that these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire, or other hazards. Do not modify the original design without permission of manufacturer.

IMPORTANT SAFETY NOTICE

5

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

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 (a bout 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 Fig.3)

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. (see Fig.4)

Fig.3

Fig.4

6

Applicable Signals

Component (Y, Pb, Pr), HDMI

Applicable input signal for PC is basically compatible to VESA standard timing.

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 D-sub 15P)

Signal name Horizontal frequency (kHz) Vertical frequency (Hz)

640 × 400 @70 Hz 640 × 480 @60 Hz 640 × 480 @75 Hz 800 × 600 @60 Hz 800 × 600 @75 Hz 800 × 600 @85 Hz 852 × 480 @60Hz 1,024 × 768 @60Hz 1,024 × 768 @70Hz 1,024 × 768 @75Hz 1,024 × 768 @85Hz 1,280 × 768 @60Hz 1,280 × 1,024 @60Hz 1,366 × 768 @60Hz Macintosh 13“ (640 × 480) Macintosh 16“ (832 × 624) Macintosh 21“ (1,152 × 870)

PC (from HDMI terminal)

Applicable input signal for PC is basically compatible to HDMI standard timing.

Signal name Horizontal frequency (kHz) Vertical frequency (Hz)

640 × 480 @60 Hz 750 (720) / 60p 45.00 60.00 1,125 (1,080) / 60p 67.50 60.00

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 displa y, so that it may not be possible to show fine detail

with sufficient clarity.

31.47 70.07

31.47 59.94

37.50 75.00

37.88 60.32

46.88 75.00

53.67 85.06

31.44 59.89

48.36 60.00

56.48 70.07

60.02 75.03

68.68 85.00

47.70 60.00

63.98 60.02

48.39 60.04

35.00 66.67

49.73 74.55

68.68 75.06

31.47 60.00

7

Service Hints

How to remove the backcover

Lay the main unit face down. (see Fig.5)

Remove the 4 fixing screws and the pedestal assembly. (see Fig.6)

Remove the 17 fixing screws. (see Fig.7)

SCREWS

Fig.5

Fig.6

Fig.7

SCREWS

8

A09A

A

A02V

A

Chassis Board Layout

TC-BOARD

P-BOARD

V-BOARD

Board Name Function

AV Terminal, HDMI, AV Switch, Sound Processor, TV tuner, PC, LAN,

A-BOARD P-BOARD Power Supply, Main Input

V-BOARD Remote Receiver, C.A.T.S., R/G LED

G-UNIT Side AV3 Terminal

TC-BOARD Panel Driver

OPT Terminal, GENX, EEPROM, ADV,LDA2, Speaker out,USB slot

Location of Lead Wiring

To find the Part Number of required wire in Replacement Parts List click on the wire name in red box.

P4-INV P3-INV

A09-P2

TC01-PAN

TC04-PAN

A15-PAN

G-UNIT

A-BOARD

TC01

TC04

TC05

TC06

P4

P2

P3

15

P1

12

10

CN0100

SP

10

SP

A02-S01

A10-V10

A12-SP

9

Technical Description

Specification of KEY for CI Plus, DTCP-IP and One-to-One General information:

1. EEPROM (IC8950) for spare parts has the seed of KEY for each.

2. The final KEY data will be generated by LDA2 IC (IC8000) when SELF CHECK was done and are stored in both LDA2 IC

(IC8000) an d EEPROM (IC8950). T hree KEY are not generated for all models. The necessary KEY are only generated and stored depend on the feature of models.

Replacement of ICs:

When LDA2 IC (IC8000) is replaced, EEPROM (IC8950) should be also replaced with new one the same time. When EEPROM (IC8950) is replaced, LDA2 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.

Model and Keys:

Model No.

TX-L42G20E YES YES YES TX-L42G20ES YES YES YES TX-LF42G20S None YES YES

CI PLUS DTCP-IP

Keys

One-to_one

(for USB Rec.)

10

Setting Inspection

Voltage Confirmation

A board

Description Test point Voltage

SUB1.8V TP5601 1.76V – 1.87V SUB1.2V TP5600 1.18V – 1.29V SUB3.3V TP5602 3.19V – 3.39V SUB5V TP5200 4.9V – 5.1V SUB9V TP5220 8.82V – 9.27V STB5V TP5400 4.9V – 5.1V

TC board

Description Test point Voltage

ZW1.2V TP9061 1.17 - 1.31V ZW3.3V TP9062 3.1 - 3.5V LVCORE1.2V TP9205 1.10 - 1.25V LVCC3.3V TP9208 3.1 - 3.5V LVDD16V TP9210 15.75 - 16.94V VGH(25oC) TP9211 26.69 - 28.69V VGL TP9207 -5.67 - -4.93V H_VDD8V TP9206 7.89 - 8.41V

P board

Description Test point Voltage

24V_INV TP807 < 1V 17V TP806 < 1V 12V TP805 < 0.5V STB_5V8/TUNER5V8 TP803 5.7V ± 0.3V 400V TP800 n/a

11

Self Check

Self-check is used to automatically check the bus lines and hexadecimal code of the TV set. To enter Self-Check mode, keep pressing the down (-/v) button on the TV set and press the STATUS button on the remote control. To exit Self Check, switch off the TV set at the power button.

TX-L42G20E

TX-L42G20ES

TX-LF42G20S

42FHD

TUN O.K. STBY O.K. MEM1 O.K. MEM2 O.K. ADAM O.K. AVSW O.K. OFDM O.K. VIF O.K. LAN O.K. ZWEI O.K. ID O.K.

42FHD

TUN O.K. STBY O.K. MEM1 O.K. MEM2 O.K. ADAM O.K. AVSW O.K. OFDM O.K. VIF O.K. LAN O.K. ZWEI O.K. ID O.K.

42FHD

TUN O.K. STBY O.K. MEM1 O.K. MEM2 O.K. ADAM O.K. AVSW O.K. OFDM O.K. VIF O.K. LAN O.K. ZWEI O.K. ID O.K.

Display Ref. No. Description P.C.B.

TUN TU2901 TUNER A-Board

STBY IC1100 GENX A-Board MEM1 IC1101 EEPROM GENX A-Board MEM2 IC8950 EEPROM LDA2 A-Board ADAM IC8000 A CHIP LDA2 A-Board AVSW IC3000 AUDIO VIDEO SWITCH A-Board OFDM IC8300 DIGITAL DEMODULATOR A-Board

VIF TU2901 TUNER A-Board

LAN IC8703 ETHERNET IF A-Board

ZWEI IC9006 ZWEI TC-Board

ID IC8950 EEPROM(LDA2) A-Board

Panasonic 2010LCD

Self Check Complete

PEAKS-SOFT 2.005 PEAKS-EEP 01.00.0005 LSI-PACKAGE 0.024 LSI-RELEASE 0.29 STBY-SOFT 1.00.00 STBY-EEP 1.08.3600 STBY-ROMCORR 1.01.00 ZWEI-SOFT 05000102

Panasonic 2010LCD

Self Check Complete

PEAKS-SOFT 2.005 PEAKS-EEP 01.00.0005 LSI-PACKAGE 0.024 LSI-RELEASE 0.29 STBY-SOFT 1.00.00 STBY-EEP 1.08.3600 STBY-ROMCORR 1.01.00 ZWEI-SOFT 05000102

Panasonic 2010LCD

Self Check Complete

PEAKS-SOFT 2.005 PEAKS-EEP 01.00.0006 LSI-PACKAGE 0.024 LSI-RELEASE 0.29 STBY-SOFT 1.00.00 STBY-EEP 1.08.3600 STBY-ROMCORR 1.01.00 ZWEI-SOFT 05000102

SUM

MODEL ID

EDID

SUM

MODEL ID

EDID

SUM

MODEL ID

EDID

C71D

07

03087100 00000020

53 0afaeada

C71D

07

03087100 00000020

53 0afaeada

C7BE

07

03A87100 00000020

53 0afaeada

If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".

12

Power LED blinking timing chart

1. Subject Information of LED Flashing timing chart.

2. Contents When abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the defective block can be identified by number of blinking of the Power LED on the front panel of the unit.

Blinking

times

Once

1 BL_SOS (BACKLIGHT SOS)

2 FAN_SOS A BOARD

Blinking timing Contents Check point

4 sec

Light

No Light

LCD PANEL

A BOARD

3 SOS

4

7 SUB3.3V_SENSE_SOS A BOARD

9 SOUND_SOS

10

13 EMERGENCY SOS A BOARD

SUB12V_SENSE_SOS

ZWEI TC BOARD

A BOARD

A BOARD P BOARD

A BOARD

P UNIT

13

Service Mode Function

MPU controls the functions switching for each IICs through IIC bus in this chassis. The following setting and adjustment can be adjusted by remote control in Service Menu

How to enter SERVICE

While pressing (-/v) button on TV unit, press on the remote control for 3 times within 2 seconds.

Note:

To exit from Service mode, press the exit button on remote control.

0

14

SERVICE

A

SERVICE ADJUST WB-ADJ OPTION SRV-TOOL

Peaks SOFT 2.005 OPTION 1 1c Peaks EEP 01.00.0005 OPTION 2 ee LSI PACKAGE 0.024 OPTION 3 01 LSI DATA 0.02.09 OPTION 4 08 STBY SOFT 1.00.00 Model ID 07 STBY EEP 1.08.3600 03087100 STBY ROMCOR 1.01.00 00000020 ZWEI SOFT 5.01.0002 R/E Cnt 000/000 Ajax_CE 0.8.6 INV Cnt 0000

CMS data L0.403

1

ADJUST DYNAMIC CONTRAST YMAX

1,2:MAIN SELECT 3,4:SUB SELECT 9 :PICTURE MENU SELECT YELLOW:AUTO ADJUST VOL:ADJUST OK :WRITE

1

WB-ADJ DYNAMIC R-GAIN BEFORE

METHOD COLOR TEMP NORMAL

1,2:MAIN SELECT 3,4:SUB SELECT 7 :COLOR TEMP SELECT 9 :PICTURE MENU SELECT 0 :WB METHOD SELECT VOL:ADJUST OK :WRITE/WB DIFF ADJ

1

OPTION DYNAMIC Boot

1,2:MAIN SELECT 3,4:SUB SELECT 9 :PICTURE MENU SELECT VOL:ADJUST

1

SRV-TOOL DYNAMIC

000

FF

02

ROM

00

2

ADJUST DYNAMIC

3

COLOR

1,2:MAIN SELECT

4

3,4:SUB SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

2

WB-ADJ DYNAMIC G-GAIN

3

BEFORE

METHOD COLOR TEMP NORMAL

1,2:MAIN SELECT 3,4:SUB SELECT

4

7 :COLOR TEMP SELECT 9 :PICTURE MENU SELECT 0 :WB METHOD SELECT VOL:ADJUST OK :WRITE/WB DIFF ADJ

2

OPTION DYNAMIC STBY-SET

3

1,2:MAIN SELECT

4

3,4:SUB SELECT 9 :PICTURE MENU SELECT OK :POWER OFF

2

3C

FF

00

FF

02

DJUST DYNAMIC

3

TINT

1,2:MAIN SELECT

4

3,4:SUB SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

WB-ADJ DYNAMIC B-GAIN

3

BEFORE

METHOD COLOR TEMP NORMAL

1,2:MAIN SELECT 3,4:SUB SELECT

4

7 :COLOR TEMP SELECT 9 :PICTURE MENU SELECT 0 :WB METHOD SELECT VOL:ADJUST OK :WRITE/WB DIFF ADJ

OPTION DYNAMIC Emergency

3

1,2:MAIN SELECT

4

3,4:SUB SELECT 9 :PICTURE MENU SELECT VOL:ADJUST

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 option item.

• Press the OK button after each adjustment has been made to store the required values.

ON

00

E8

02

ADJUST DYNAMIC

3

SUB-BRT

1,2:MAIN SELECT

4

3,4:SUB SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

WB-ADJ DYNAMIC R-CENT

3

BEFORE

METHOD COLOR TEMP NORMAL

1,2:MAIN SELECT 3,4:SUB SELECT

4

7 :COLOR TEMP SELECT 9 :PICTURE MENU SELECT 0 :WB METHOD SELECT VOL:ADJUST OK :WRITE/WB DIFF ADJ

OPTION DYNAMIC Y/C Delay

3

1,2:MAIN SELECT

4

3,4:SUB SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

800

93

02

DJUST DYNAMIC

3

BACKLIGHT

1,2:MAIN SELECT

4

3,4:SUB SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

WB-ADJ DYNAMIC G-CENT

3

BEFORE

METHOD COLOR TEMP NORMAL

1,2:MAIN SELECT 3,4:SUB SELECT 7 :COLOR TEMP SELECT 9 :PICTURE MENU SELECT 0 :WB METHOD SELECT VOL:ADJUST OK :WRITE/WB DIFF ADJ

OPTION DYNAMIC OPT 1

3

1,2:MAIN SELECT

4

3,4:SUB SELECT 5,6:BIT SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

554

80

02

00001100

DJUST DYNAMIC

H-POS

3

1,2:MAIN SELECT

4

3,4:SUB SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

WB-ADJ DYNAMIC B-CENT

3

BEFORE

METHOD COLOR TEMP NORMAL

1,2:MAIN SELECT 3,4:SUB SELECT

4 4

7 :COLOR TEMP SELECT 9 :PICTURE MENU SELECT 0 :WB METHOD SELECT VOL:ADJUST OK :WRITE/WB DIFF ADJ

OPTION DYNAMIC OPT 2

3

1,2:MAIN SELECT

4

3,4:SUB SELECT 5,6:BIT SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

9B

02

11101110

9B

DJUST DYNAMIC

0

H-AMP

3

1,2:MAIN SELECT

4

3,4:SUB SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

OPTION DYNAMIC OPT 3

3

1,2:MAIN SELECT

4

3,4:SUB SELECT 5,6:BIT SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

0

00000001

ADJUST DYNAMIC V-POS

3

1,2:MAIN SELECT

4

3,4:SUB SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

OPTION DYNAMIC OPT 4

3

1,2:MAIN SELECT

4

3,4:SUB SELECT 5,6:BIT SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

00100000

DJUST DYNAMIC

0

V-AMP

3

1,2:MAIN SELECT

4

3,4:SUB SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

4

DJUST DYNAMIC VCOM BEFORE

1,2:MAIN SELECT 3,4:SUB SELECT 5 :FLICKER PATTERN 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

OPTION DYNAMIC EDID-CLK

3

HDMI

1,2:MAIN SELECT

4

3,4:SUB SELECT 7 :HDMI SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

3

154

MID

1

0

1,2:MAIN SELECT 9 :PICTURE MENU SELECT OK :ENTER

15

Service Tool Mode

How to access

1. Select [SRV-TOOL] in Service Mode.

2. Press [OK] button on the remote control.

Display of TD2Microcode version Display of Flash ROM maker code

Display of SOS History

SRV-TOOL

TD2Microcode:005a0910 Flash ROOM: AD – F1 PTCT:00.00.00.00.00 Time 00051:30 On/Off 0000042

Display of SOS History

SOS History (Number of LED blinking) indication. From left side; Last SOS, before Last, three occurrence before, 2 This indication will be cleared by [Self/check indication and forced to factory shipment setting].

nd

occurrence after shipment, 1st occurrence after shipment.

Power ON Time, On/Off

Note: To display TIME/COUNT menu, highlight position, then press MUTE for 3sec. 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.

Exit

Disconnect the AC cord from wall outlet or switch off the power with [Power] button on the main unit.

POWER ON TIME/COUNT Press [MUTE] button (3sec)

16

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.

Hotel mode

Initial INPUT

Initial POS

Off

Initial VOL Level

Maximum Vol Level

Button Lock

Remote Lock

Off

Select

EXIT

Change

RETURN

3. To exit the “Hotel mode” menu press the EXIT button on remote control.

4. Explain the Hotel mode setup menu.

ITEM Function

Hotel Mode Select hotel mode ON/OFF Initial INPUT Select input signal modes.

Initial POS Select programme number.

Initial VOL Level Adjust the volume when each time power is

Maximum VOL Level

Button Lock Select local key conditions.

Remote Lock Select remote control key conditions.

Set the input, when each time power is switched on. Selection: Off Analog /DVB-C/DVB-T AV1/AV2/AV2S/AV3/ Component/HDMI1/HDMI2/HDMI3/HDMI4 *Off: give priority to the last memory. However, Euro Model is compulsorily set to TV. *AVnS/AVnC: only Euro model selectable * PC:selectable with VGA option

Selection: Off/0 to 99 *Off: give priority to the last memory

switched on. Selection/Range: Off/0 to 100 *Off: give priority to the last memory Adjust maximum volume. Range: 0 to 100

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. Selection:

Off/SETUP/MENU *Off: altogether valid *Setup: only Setup menu is invalid MENU: Picture/Sound/Setup menu are invalid

17

Data Copy by SD Card

Purpose a) Board replacement (Copy the data when exchanging A-board):

When e xchan ging A-board, the data in original A-board can be copied to SD card and then copy to new A-board.

TV

A-board

(Before exchanging)

Copy to SD card

(After exchanging)

Copy back from SD card

SD

Following data can be copied. User setting data (inc. Hotel mode setting data) Channel scan data Adjustment and factory preset data

b) Hotel (Copy the data when installing a number of units in hotel or any facility):

When insta lling a number of units in hotel or any facility, the data in master TV can be copied to SD card and the copy to other TVs.

Master TV

Copy to SD card

SD

Other TV

Copy from SD card

Other TV

Following data can be copied. User setting data (inc. Hotel mode setting data) Channel scan data

Preparation

Make pwd file as startup file for (a) or (b) in an empty SD card.

1. Insert an 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 ne w text docum ent that you just created a nd select rename, and then change the name and extension of the file to the following file name (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 be in SD card.

18

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 startu p 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

Please do not remove the SD card

Data copy has been successful

Data Copy(Board replacement )

Input password

Data Copy(Board replacement )

Input password

Data Copy(Board replacement )

Copy TV to SD card

Please wait for a while

Data Copy(Board replacement )

Performing

Please remove SD card

Data copy (Board replacement) or (Hotel)

-----

Input Password 2770 or 4850

-----

Performing

GETTING

Completion

FINISH

19

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 automaticall y.

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 from 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 del eted and can be used for other TVs.

5. Turn off the TV set.

Note:

1. Depending on the failure of boards, function of Data for board replacement does not work.

2. This function can be effective amon g the same model numbers.

Data Copy(Board replacement )

Input Password

Input password

Performing

Data Copy(Board replacement )

Copy SD card to TV

Please wait for a while

Please do not remove the SD card

Data Copy(Board replacement )

Performing

Data copy has been successful

Please remove SD card

Input Password 2771 or 4851

-----

Performing

WRITING

Completion

FINISH

20

Option Bytes Description

OPTION1

b0 ATP Search Speed Slow (1) / Fast (0) b1 TXT Ch Refresh On (1) / Off (0) b2 ID-1 On (1) / Off (0) b3 Macrovision Auto-Judge On (1) / Off (0) b4 Surround enable low bit (*1) On (1) / Off (0) b5 Surround enable low bit (*1) On (1) / Off (0) b6 Pre Emphasis On (1) / Off (0) b7 TINT_COMPONENT_HDMI On (1) / Off (0)

OPTION2

b0 Adjust lgain enable On (1) / Off (0) b1 A2 BC enable (5.5) On (1) / Off (0) b2 A2 DK1 enable (6.26) On (1) / Off (0) b3 A2 DK3 enable (5.742) On (1) / Off (0) b4 NICAM scan On (1) / Off (0) b5 NICAM BG enable (5.5) On (1) / Off (0) b6 NICAM I enable (6.0) On (1) / Off (0) b7 NICAM DK enable (6.5) On (1) / Off (0)

OPTION3

b0 NICAM priority On (1) / Off (0) b1 Starhub scan enable On (1) / Off (0) b2 add H264 enable On (1) / Off (0) b3 A2 DK2 enable On (1) / Off (0)

Inhibition of countermeasure for

b4

SIF signal drop b5 get onid from physical CH On (1) / Off (0) b6 b7 SASO mute On (1) / Off (0)

OPTION4

b0 All country DVB-S enable On (1) / Off (0) b1 All country DVB-C enable On (1) / Off (0)

b2 3DYC color motion detected On (1) / Off (0) b3 On (1) / Off (0) b4 On (1) / Off (0) b5 On (1) / Off (0) b6 PIP On (1) / Off (0) b7 RF remote control On (0) / Off (1)

On (1) / Off (0)

21

Adjustment Method

Sub-Contrast/White Balance Adjustment

Instrument Name Connect to Remarks

1. Remote controller

2. LCD WB meter (Minolta CS-1000A e qu ivalent)

3. Comunication jig

4. Computer for external control

Procedure Remarks

Subcontrast adjustment

1. Receive PAL colour bar (10 0% white) RF signal.

2. Enter “Contrast” adj. In SERVICE mode.

3. Start adjusting by using Yellow Key.

4. If the adjustment finished normally, the letter of Contrast will change from red to black

White Balance adjustment

1. Procedure basically performs checking using the production software and make automatic adjustment using external computer.

2. It adjusts in the mode of : Colour balance Normal as follows.

Viewing Mode Dynamic

WHITE Normal x: 0.2940 ± 0,010 y: 0.3140 ± 0,010

GRAY Normal x: 0.2940 ± 0,010 y: 0.3140 ± 0,010

Correlation can be also taken by CA-210 or equivalent

Let the panel standfor more than 3 hours at more than 20 °C. Basically perform adjustment in the ambient environment of room temperature more than 20 °C. The aging time is more than20 min at above room temperature.

Applied signal

100% full colour bar

0.7V p-p white peak

87.5% modulation

100% WHITE

50% GRAY

22

Wiring Diagram

JK3700

G04

A04

USB0

USB1

G-UNIT

JK8701

JK8700

AV3

HDMI1

JK4700

HDMI2

JK4701

HDMI3

JK4703

LCD PANEL

HDMI4

JK4702

A15

TC05

TC06

TC01

TC04

T-CON

MAIN IN

DIGITAL

AUDIO OUT

SD SLOT

SERVICE

CI SLOT

Y,PB,PR

AUDIO IN,

AUDIO OUT

D3300

JK8850

CN0100

JK8401

JK3301

A-BOARD

A09

A10

P2

V10

P4

P3

P-BOARD

V-BOARD

P1

JK8800

ETHERNET

JK3304

PC

JK3302

AV1

JK3303

AV2

TU2901A

TUNER

A02

KEY

A12

SP

23

Block Diagram (1/3)

JK8401

CI SLOT

SUB CI 5V

JK8700

USB1

JK8701

USB0

IFD1/2 19,20

TU2901A

JK3302

JK3303

SIF-OUT 9

TUNER DVB-T/C

VIDEO OUT 11

AV1_V 20

AV1_VOUT 19

AV1_RED 15

AV1_GREEN 11

AV1_BLUE 7

AV1_L 6

AV1_LOUT 3

AV1_R 2

AV1 21PIN SCART

AV1_ROUT 1

AV2_V 20

AV2_VOUT 19

AV2_RED/C 15

AV2_GREEN 11

AV2_BLUE 7

AV2_L 6

AV2_LOUT 3

AV2 21PIN SCART

AV2_R 2

AV2_ROUT 1

1 2

PC

3

JK3304

Y

PB PR

Y,PB,PR

L

IN

JK3301

R

L

AUDIO

R

OUT

A04

6

4 2 3

1

TO G-UNIT

A09

3

7

7 9

9-10

10

12

13

TO P-BOARD

5 4

2 1

2 10 15

STB 5.8V P17V SUBF12 15V

DCDCIN

STB SUB 5.8V

5.8VS

SUB ON MAIN ON ALARM ON/OFF

TNR5V FE 1.2V SUB3.3V

IFD1/2 SIF MAIN RF CVBS

YPBPR-PB YPBPR-PR AUDIO L IN

AV3_VIN AV3_LIN AV3_RIN

HP_LOUT HP_ROUT

PC-R PC-G PC-B

YPBPR-Y

DCDCIN

P17V

SUB F12V 15V

5

79 CVBSIN6 44 CVBS/Y +COUT3

91 PRIN2/R3 89 CYIN2/G3 87 PBIN2/B3

62 L3IN 56 L1OUT 63 R3_IN 55 R1_OUT

23 CVBS_IN2 19 G1/YIN1

38 Y/Y+C/CVBSOUT4 37 SAG CVBSOUT4

11 R2/CIN3 21 B1 CIN1 13 G2/YIN2 15 64 L4IN

54 L2OUT 65 R4IN

53 R2OUT

3 2 GIN 1 BIN

95 CYIN1 93 PBIN1 97 PRIN1 70 L7IN

71 R7IN

52 L3OUT

51 R3OUT

81 68 L6IN 69 R6IN

IC5500

(C0DBAYY00715)

20

IC5501

(C0DBAYY00715)

20

R5266 R5265

CVBSin4

B2/CIN2

RIN

CVBS IN5

4 9

Q5241

IC3000

(C1AB00003218)

AVSW

SUB1.2V_A SUB1.2V_D

SUB1.5V SUB3.3V

MAIN SND 17V

PNL 12V

G/CY/CVBSout1 31

B/PB/Cout1 33

R/PRout1 35

CVBSout 46

VDout 34 HDout 32

CVBSin1 17

R4out 49

L4out 50

L1IN 58

R1IN 59

L2IN 60

R2IN 61

SUB F12V 15V

STB 5.8V

MAIN Y/CVBS MAIN PB/C MAIN PR RGB CVBS

PC VS PC HS

DVB CVBS

AV - R AV - L

AUDIOOUT L AUDIOOUT R TV OUT L TV OUT R

SUB OP 5V

SUB 5V

STB SUB 5.8V

TNR 5V

IC5280

(C0DBGYY00281)

4 3

SIF

2 3

(C0DBAYY00755)

1 8

(C0DBEYY00124)

4

(C0DBGYY00281)

5

STB 5V

SIF INN

SIF INP

HP_LOUT HP_ROUT

IC5300

REG

IC5200

REG

IC2952

REG

DDC1

JK4701

IFD1/2

2.5V

IC8302

(C0DBFYY00041)

SUB 3.3V

VDDSD

POWER SUPPLY

A-CHIP

B9 A9

A4 A5 A6 A7

P1 P2

E18

C15 A15

B13 A13 D13 C13

B14 A14

CEC

HPD1

HDMI_5V_DET1

HDMI2

37,38 32,40

SUB 1.2V D

SUB 1.5V D

AV / IO

HDMI

IC4700

HDMI SWITCH

(C1AB00003079)

DDC2

CEC

HDMI1

JK4700

IC8300

(C1AB00003188)

OFDM

30,42,7

19

SUB3.3V

A-Chip

3.3V HDMI

HPD2

HDMI_5V_DET2

28,32,44

22,10

FE 1.2V

IIC1 EEP

OVP Circuit

SUBF12_15V

STB SUB8.8V

IC4701

(C0DBGYY00578)

5

DDC1

CEC

HDMI3

JK4703

SUB3.3V

8

(C3EBJC000055)

IIC /IF

(HSDATA)

D-ChipA-Chip

P17V

SUB OP 5V

REG

4

SUB 5V

HPD1

HDMI 5V DET1

IC8950

EEPROM LDA2

5.8VS

ARC

24

OVP DET

IC5000

Analog

ASIC

(AN34042A-VF)

STB5V

STB3.3V

DDC0

CEC

HPD0

HDMI4

JK4702

IC8240,IC8241

DDR3 2x 1Gbit

DDR3 I/F

STB XRST

PWM9V

SUB3.3V

SUB_F12V_15V

HDMI_5V_DET0

AUDIO OUT

SUB3.3V

12,37

IC8000

(MN2WS0110C)

LDA02

IC1100

GenX8

(MNZSFH9GP91)

HDMI 5V DET0,1,2,3

DDC0,1,2,3

D3300

HPD0,1,2,3

OPT SPDIF

HDMI CEC

SUB3.3V

DIGITAL

IC8400

(C1AB00003193)

CI TS ASIC

64,15 24,37

SUB3.3V

IC8921

(C3FBTY000011)

NAND FLASH

EXTERNAL BUS

SERIAL

COMMUNICATION

IIC1

ADJ SCL/SDA

SG GENX KEY1

SWITCH

49

ARC

SUB5V

LEVEL SHIFER ASIC

CPU BUSTS IF

D20 OPT AUDIO OUT

SERIAL I/F SDA/SCL

ETHER PHY

24,39,62 88,68,64

STB 3.3V

STB-5.8V

1 2 3

A02

TO K BOARD

IC8401

(C1AB00002913)

49

SUB3.3V

HS DATA

DATA

EEP WP

IIC1

5.8VS

KEYSCAN

2,17,33

SUB5V

USB I/F

POWER SUPPLY

D-CHIP

AUDIO OUT

IIC1 EEP

SUB3.3V

SD CARD

JK8850

SDA/SCL

LVDS I/F

F20 E19

C19 B19

IC1101

EEPROM

(C3EBFC000047)

8

STB 3.3V

IC8701

(C0DBZYY00266)

POWER SUPPLY

IIC2

SUB 3.3V SUB 1.2V D SUB 1.5V D VDDSD DDR1.5V

MAIN SND 17V

SDA/SCL

STB 5V

GenX8 E2PROM

SERVICE

FOR ADJUSTMENT

CN0100

2,3

SUB 0P 5V

(C0DBGYY00281)

(C0CBCAG00031)

USB DATA

IC2952

REG

IC2950

REG

LVDS RGB 10bit

8

IC2301

9

AUDIO AMP

(C1AB00003230)

14 15

MAIN SND 17V

IC5220

(C0DBGYY00895)

REG

IC8700

(C0DBZYY00266)

POWER SUPPLY

STB SUB5.8V

4

1

SUB3.3V

6

1

SUB F12V 15V

3

1

IC8703

ETHERNET

(C1CB00003239)

9-12

25,26

SUB3.3V

RX/TX

SUB3.3V

ETHERNET

LAN

JK8800

2,3

SUB 0P 5V

TNR 5V

FE1.2V

25-26 30-31

36-37

41-42

SUB 9V

USB DATA

PNL 12V

REMOTE

AI SENSOR

G LED R LED

SUB5V

STB3.3V

A15

1-5

42-44

46-47

37-40 32,33,35 36,30-27

24-21 16,17,19 20,14-11

A12

4 3

2 1

A10

6 5 3 2

8 4

TO TC-BOARD

SP- R

SP- L

TO V-BOARD

Block Diagram (2/3)

LCD PANEL

RIGHT 60pin

VCC L3.3V

VDD L16V

H_VDD8V

H VDD8V

IC9205

(C0DBAYY00730)

STEP DOWN CONVERTER

PNL 12V

VCC L3.3V

VGH L20V

VGL -L10V

VDD 16V

IC9207

(C0DBAYY00731)

Gamma Voltage GEN.

DRIVER

VDD L16V

VCC L3.3V

SDA SCL

EEP

IC9202

SCL/SDA

LVCC3.3V

DRIVER

LEFT 60pin

H_VDD8V

GMA 1-4

3-6

15-18

IC9206

(C0FBBY000076)

TCON GAMMA DAT

IC9201

(C1AB00003252)

TFL LCD PANEL CONTROLL

3-14

17-28

31-42

VCC L3.3V

VDD L16V

92-95,97-100,102-105

107-108,110-111,113-116

118-121,123-124,126-127

CLK

mini-LVDS

IN 1-6

CLK 1-6

OUT 1-6

IC9204

LEVEL SHIFTER

(C1AB00003246)

V-BOARD

3 1

RM2500

VCC OUT

(PNJ4815M01TV)

STBY 3.3V

SN2500

(B3JB0000078)

VCC

3

SUB 5V

V10

AI

OUT

1

AI

R LED

G LED

STBY 3.3V

1

23457

TO A10

STBY 3.3V

AI

REMOTE

SUB 5V

G R

D2500

(B3AGB000060)

Q2500

R LED

Q2501

G LED

25

VDD 3.3V

ZW 1.2V

ZW 3.3V

IC9004

20

(C0DBAYY00715)

DC/DC CONVERTER

TC-BOARD

PNL 12V

SDA SCL

1.22V

3.3V

2.5V

3.3V

IC9003

SPI ZWEI FLASH

TC05

mini LVDS

IC9006

(MN85061)

SPI

FLSH

PNL 12V

SDA SCL

5-6

51-47

37-40

9-10

TC05 TO A15

BL

ZWEI 2

LVDS

LVDS RGB 10bit

32-36

30-27

24-21

20-16

32

PWMB/PWMA

TC06

14-11

Block Diagram (3/3)

MAIN IN

~

+

-

Line Filter

~

+

-

P2

COLD

HOT

11

RELAY5V6

1,2

5V8

TO A09

10

4,5

12V

TV_MAIN_ON

7

9

17V

TV_SUB_ON

11

A_DIM

T802

12

INV_ON

7

6

13

14

INV_SOS

INV_PWM

10

4

7,8

5,2

P3

IC802

151413

A_DIM

INV_ON

IC803

PC801

4

TO INVERTER

12

4,5

1,2,3

24V_INV

INV_SOS

INV_PWM

18

T803

6,7,8

GND

D830

TO INVERTER

4,5

IC804

15

P4

1,2,3

24V_INV

PC803

6,7,8

GND

PC802

9,10

COLD

PC805

9,10

D834

10

11

16,17

12,13

4

HOT

P-BOARD

LF801

LF800

P1

D816

4

RL801

F800

1

PC804

RL800

T801

D808

Q860

1

2

IC800

2

16

IC801

1

18

7

26

Panasonic TX-L42GP20E Schematic

Specifications

CONTENTS

Applicable Signals

Service Hints

Technical Description

Setting Inspection

Self Check

Power LED blinking timing chart

SERVICE

Service Tool Mode

Hotel Mode

Data Copy by SD Card

Data Copy from TV set to SD Card

Data Copy from SD Card to TV set

Option Bytes Description

Adjustment Method

Wiring Diagram

Block Diagram (1/3)

Block Diagram (2/3)

Block Diagram (3/3)