Panasonic TX-19LED8F, TX-19LED8FS, TX-19LXD8 Repair manual

ORDER No. PCZ0809175CE

Service Manual

Colour LCD Television

TX-19LED8F

TX-19LED8FS

TX-19LXD8

LH69 Chassis

Specifications

Power Source: 220-240V AC, 50/60Hz

Power Consumption 57W

Stand-by Power Consumption: 0.5W (Without monitor out recording) 19W (With monitor out recording)

Aerial Impedance: 75Ω unbalanced, Coaxial Type Receiving System: LXD8 LED8F

PAL-I, PAL-I/H, B/G, D/K,

PAL-525/60 (AV only) SECAM B/G, D/K, L/L’ DVB (via UHF aerial input) PAL-525/60 (AV only) M.NTSC (AV only) DVB (via VHF/UHF aerial input) NTSC (AV only) M.NTSC (AV only) NTSC (AV only)

Receiving Channels: LXD8 LED8F UHF E21-E68 VHF E2-E12 VHF H1-H2 (ITALY)

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)

Operating Conditions: Temperature: 0°C ÷ 35°C Humidity: 20% ÷ 80% RH (non condensing)

Scanning format: 480i(60Hz), 480p(60Hz), 576i(50Hz), 576p(50Hz), 720p(60Hz), 720p(50Hz), 1.080i(60Hz),

1.080i(50Hz), 1.080p(60Hz), 1.080p(50Hz), 1080p(24Hz) PC signals: VGA, SVGA, XGA, SXGA(compressed)

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

Panasonic CS ( U.K. ) Ltd.

WILLOUGHBY ROAD,

BRACKNELL,

BERKS.,

RG12 8FT.

Intermediate Frequency:

Video/Audio LXD8 LED8F

Video 38,9MHz 38,9MHz, 33,9MHz

Audio 32.90MHz 33,4MHz (B/G), 33,16MHz (A2)

32.35MHz(NICAM) 33,05MHz (NICAM B/G, D/K, L)

32,4MHz (D/K), 32,66MHz (CZ STEREO) 40,4MHz (L

Colour 34,47MHz 34,47MHz (PAL)

’), 39,75MHz (L’NICAM)

34,5MHz, 34,65MHz (SECAM) 38,3MHz, 38,15MHz (SECAM L

Terminals:

’)

AV1 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 75 Ω C:0,3V p-p 75Ω

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

AV2 Audio (RCAx2) 500mV rms 10kΩ Video (RCAx1) 1V p-p 75Ω

HDMI1, HDMI2 Type A Connector COMPONENT Video (RCAx3) Y:1V p-p 75Ω (inc luding synchronization)

Pb, Pr: ±0,35V p-p 75Ω AUDIO IN Audio (RCAx2) 500mV rms 10kΩ

AUDIO OUT Audio (RCAx2) 500mV rms 1kΩ (high impedance) CARD SLOT SD CARD 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)

LCD screen: L5EDD4T00001 1680 x 1050 XGA, 16:10 Visible Diagonal 480mm

Audio Output: 6W (2x3W) Headphones: 3,5mm, 8Ω Impedance Accessories supplied : Remote Control 2 x R6 (UM3) Batteries Dimensions:

Height: Width: Depth:

Including TV stand 401mm 514mm 197mm

TV set only 368mm 514mm 85mm

Mass:

Including TV stand 7.5kg TV set only 6.5kg

Specifications are subject to change without notice. Mass 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

Safety Precautions

Ω

μ

Ω

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 a s 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 panel TKP0E37301 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 transfor mer 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 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: 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

Measuring network for TOUCH CURRENTS

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

=1500Ω

R

S

Fig. 1

R0=500Ω

Fig. 2

C

=0.22μF

S

10k

F

0.022

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 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 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 devic es.

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 hi gh (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 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

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 (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 × 1,024 @60Hz 1,366 × 768 @60Hz Macintosh 13“ (640 × 480) Macintosh 16“ (832 × 624) Macintosh 21“ (1,152 × 870)

Note:

• Signals other than above may not be displayed properly.

• The above signals are reform atted for optimal viewing on your display.

• Applicable input signal for PC is basicall y com patible to VESA standard timing.

• PC signal is magnified or compresse d for display, 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

63.98 60.02

48.39 60.04

35.00 66.67

49.73 74.55

68.68 75.06

7

Service Hints

How to remove the back cover

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

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

Remove the 12 fixing screw. (see Fig.7) Remove the back cover.

SCREWS

Fig.5

Fig.6

SCREWS

Fig.7

8

Chassis Board Layout

B UNIT

A-BOARD

Board Name Function

A-Board AV Terminal, AV Switch, Sound Processor, Speaker out, TV tuner, PC,

SD,Global Core, HDMI, IDTV Processor, D/A Converter, Peaks Lite 2 K-Board Key control, Main Switch V-Board Remote Receiver, R&G LED, Timer Rec LED,C.A.T.S

P Unit Power Supply B Unit Inverter

K-BOARD

P UNIT

V-BOARD

Location of Lead Wiring

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

CN7-CN8

LVDS

CN9

CN10

CN11 CN12

CN8

A5

K1

CN7

A1

A7

A6

TU2901

CN4

CN3

A10

CN2

CN1

A1-K1

CN2-SP

V1

A10-V1

9

Setting Inspection

Voltage Confirmation

A Board

SUB 1.8V TP5602 1,76V – 1,85V SUB 1.2V TP5601 1,22V – 1,27V SUB 3.3V TP5600 3,19V – 3,39V FHD 3.3V TP4206 3,19V – 3,39V DVDDIO3.3V/TVDD3.3V TP4531 3,33V – 3,42V AUD 3.3V TP2031 3,23V – 3,37V DVDD 1.8V TP2032 1,77V – 1,83V

Confirm the following voltages:

Description Test point Voltage (V)

10

Self Check

p

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-19LED8F TX-19LED8FS

TX-19LXD8

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

19FHD Panasonic 2008LCD

Self Check Com

ADV O.K. ADAV O.K. TUN O.K. GENX O.K .. MEM1 O.K. MEM2 O.K. AVSW O.K. OFDM O.K. MIHO O.K. VIF O.K.

19FHD Panasonic 2008LCD

Self Check Com

ADV O.K. ADAV O.K. TUN O.K. GENX O.K .. MEM1 O.K. MEM2 O.K. AVSW O.K. OFDM O.K. MIHO O.K. VIF O.K.

PEAKS-SOFT 2.200 PEAKS-EEP 01.00.0042 GenX-SOFT 1.01.00 GenX-EEP 1.07.01 GenX-ROMCORR 1.04.00

PEAKS-SOFT 2.200 PEAKS-EEP 01.00.0047 GenX-SOFT 1.01.00 GenX-EEP 1.07.01 GenX-ROMCORR 1.04.00

lete

SUM 1810 OPTION 1 0c OPTION 2 00 OPTION 3 00 CHECK 0c

MODEL ID 05 032f1100 00002000

EDID1 2d.2b

EDID2 2d.1b

SUM 1808 OPTION 1 0c

OPTION 2 00 OPTION 3 00 CHECK 0c

MODEL ID 05 032e1100 000020000

EDID1 2d.2b

EDID2 2d.1b

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

ADV IC4510 A/D CONVERTER A-Board

ADAV IC2106 AUDIO PROCESSOR A-Board

TUN TU2901 TUNER A-Board

GENX IC1100 MICROPROCESSOR A-Board MEM1 IC1101 EEPROM /GenX/ A-Board MEM2 IC8601 EEPROM /PeaksLite/ A-Board

AVSW IC3001 AUDIO VIDEO SWITCH A-Board OFDM IC8301 COFDM DEMODULATOR A-Board

MIHO IC4200 MIHO A-Board

VIF TU2901 TUNER A-Board

11

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 INVERTER_SOS

2

3

Blinking timing Contents Check point

4 sec

Light No Light

FAN_SOS

SOS

A BOARD, P UNIT

A BOARD

P UNIT

4

5

6

7

8

9

13

DTV_12V

MAIN_9V

SUB_5V

SUB_3.3V A BOARD

MAIN_3.3V A BOARD

SOUND_SOS

Emergency SOS A BOARD

P UNIT

A BOARD

P BOARD

A BOARD, V BOARD

A BOARD

12

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 the 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

13

SERVICE

A

SERVICE ADJUST WB-ADJ OPTION SRV-TOOL

Peaks SOFT 0.084 OPTION 1 1c Peaks EEP 00.01.0042 OPTION 2 00

S e r v i c e 1

LSI DATA 0.00.02 OPTION 3 00 STBY SOFT 1.01.00 Model ID 05 STBY EEP 1.07.01 032f1100 STBY ROMCOR 1.04.00 00002000 RB Cnt 000 Time 0000:45

0000008

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

COLOR TEMP NORMAL

1,2:MAIN SELECT 3,4:SUB SELECT 7 :COLOR TEMP SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

1

OPTION DYNAMIC Boot

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

1

SRV-TOOL DYNAMIC

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

000

DC

ROM

00

2

3

4

2

3

4

2

3

4

2

ADJUST DYNAMIC COLOR

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

WB-ADJ DYNAMIC G-GAIN

COLOR TEMP NORMAL

1,2:MAIN SELECT 3,4:SUB SELECT 7 :COLOR TEMP SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

OPTION DYNAMIC STBY-SET

1,2:MAIN SELECT 3,4:SUB SELECT 9 :PICTURE MENU SELECT OK :POWER OFF

3C

DE

00

216

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

COLOR TEMP NORMAL

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

4

7 :COLOR TEMP SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

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 of e ach option item.

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

ON

00

FF

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

COLOR TEMP NORMAL

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

4

7 :COLOR TEMP SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

OPTION DYNAMIC Y/C Delay

3

1,2:MAIN SELECT

4

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

808

70

O

DJUST DYNAMIC

3

BACKLGT

1,2:MAIN SELECT

4

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

WB-ADJ DYNAMIC G-CENT

3

COLOR TEMP NORMAL

1,2:MAIN SELECT 3,4:SUB SELECT 7 :COLOR TEMP SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

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

291

80

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

COLOR TEMP NORMAL

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

4 4

7 :COLOR TEMP SELECT 9 :PICTURE MENU SELECT VOL:ADJUST OK :WRITE

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

00000000

6A

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

00000000

ADJUST DYNAMIC V-POS

3

1,2:MAIN SELECT

4

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

DJUST DYNAMIC

0

V-AMP

3

1,2:MAIN SELECT

4

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

0

14

Option Bytes Description

OPTION1

0 Speed ATP Slow (1) / Fast (0) 1 TXT Ch ON (1) / OFF (0) 2 ID-1 ON (1) / OFF (0) 3 Macrovision Auto evaluate ON (1) / OFF (0) 4 SRS Surround ON (1) / OFF (0) 5 Teletext Top OFF (1) / ON (0) 6 Equalizer 7 Not use Not use

OPTION2

0 Not use Not use 1 A2 Stereo (5,5MHz) ON (1) / OFF (0) 2 A2 Stereo (6,0MHz) ON (1) / OFF (0) 3 A2 Stereo (6,5MHz) ON (1) / OFF (0) 4 Not use Not use 5 NICAM (5,5MHz) ON (1) / OFF (0) 6 NICAM (6,0MHz) ON (1) / OFF (0) 7 NICAM (6,5MHz) ON (1) / OFF (0)

OPTION3

0 NICAM priority (ASIA/M.E) ON (1) / OFF (0) 1 NICAM priority (K/UK) ON (1) / OFF (0) 2 NICAM priority (China) ON (1) / OFF (0) 3 NICAM priority (NZ/INDN) ON (1) / OFF (0) 4 NICAM priority (AUS) ON (1) / OFF (0) 5 NICAM priority (E.Evropa) ON (1) / OFF (0) 6 NICAM priority (Special) ON (1) / OFF (0) 7 Not use Not use

15

Adjustment Method

Sub-Contrast/White Balance Adjustment

Instrument Name Connect to Remarks

1. Remote controller

2. LCD WB meter (Minolta CA-210 or eq uivalent)

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

Viewing Mode Dynamic LXD8 LED8F WHITE Normal WHITE Normal

x: 0,2900 ± 0,010 x: 0,2870 ± 0,010 y: 0,3120 ± 0,010 y: 0,3030 ± 0,010

GRAY Normal GRAY Normal x: 0,2880 ± 0,010 x: 0,2850 ± 0,010 y: 0,3100 ± 0,010 y: 0,3010 ± 0,010

Correlation can be also taken by CS-1000A 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 85% modulation

100% WHITE

50% GRAY

16

Wiring diagram

3

00C K

3

0

TU2901

CN0100

SERVICE

LCD PANEL

CN9

A5

CN10

CN12

CN11

B UNIT

CN8

CN7

SD SLOT

CI SLOT HDMI1 HDMI2

HP

JK8801

A7

CN4

P UNIT

A6

JK4501 JK4500

A-BOARD

8401 J

1

CN3

K1

CN2

SP

CN1

MAIN IN

K-BOARD

1 1

K

PC

JK3001

1

JK3003B

AV1

K

AV2

YUV,AUDIO IN,

AUDIO OUT

A10

1

V-BOARD

17

Video & Stereo Audio Block Diagram

_

A

V

9

2

R

V

JK3003B

JK3100C

PC

HP

AV1_V 20

AV1_VOUT

AV1_RED/C

AV1_GREEN

AV1_BLUE 7

AV1_L

AV1_LOUT

AV1_R 2

AV1 21PIN SCART

AV1_ROUT

AV2

Y PB PR

L

R

L

R

AUDIO /OUT, IN/, YPBPR

1

2

JK3001

3

JK3101

19 15 11

6 3

1

AV2_V

AV2_L

L

AV2_R

R

YPBPR_Y YPBPR_PB

YPBPR_PR PC_LIN

PC_RIN RCA_AUDIOOUT_L

RCA_AUDIOOUT_R

PC_R PC_G PC_B

4 3

19,23 AV1_V_Y 37 AV1_FEED_B

38 AV1_VO 11,21 AV1_RED_C 13 AV1_GREEN 15 AV1_BLUE

64 AV1_L

54 AV1_LO

65 AV1_R

53 AV1_RO

[C1AB00002855]

AUDIO VIDEO SWITCH

79 AV2_V

62 AV2_L

63 AV2_R 95 YPBPR_Y

93 YPBPR_PB

97 YPBPR_PR

70 PC_LIN

71 PC_RIN

52 RCA_AUDIOOUT_L

51 RCA_AUDIOOUT_R

3 PC_R 1 PC_G

99 PC_B

IC3001

MAIN_Y/CVBS 31

MAIN_PB 33

MAIN_PR/C 35

RGB _CVBS 46

MAIN_RF_CVBS

DVB _CVBS 17

AV_L AV_R 49

TV_R 61 TV_L 60

AUDIOOUT_R 59 AUDIOOUT_L 58

HP_LOUT

HP_ROUT

5

50

1

3 5

IC2012

[C1BB00000947]

HP AMP

Q4516 Q4515 Q4514

Q4519 Q4517

71 MAIN_Y/CVBS 73 MAIN_PB 72 MAIN_PR/C 78 RGB_CVBS 69 SOY

IC4510

[C1AB00002966]

78 AV_L 79 AV

R

75 TV

R

73 AUDIOOUT_R 72 AUDIOOUT_L

58 HPOUT1R 57 HPOUT1L

ADV

4 HDMI_SPDIF

8 HDMI_SDIN

6 HDMI_BCLK

35

25

22

HDMI_SDIN

HDMI_BCLK

HDMI_SPDIF

IC2106

[C1AB00002909]

AUDIO PROCESSOR

43 SQ_L-

[C1AB00002875]

AUDIO AMPLIFIER

21

114,115,117,118, 120,121,123,124

130,131,133,134, 136,137,139,140

14,15,20-31,34-45, 48-50,53-55,59,60

7 HDMI_LRCK

HDMI_LRCK 36

DTV_LRCK DTV_BCLK 19

DTV2_SDIN 23

42 SQ_L+

71412

IC2301

30

25

AUXIN2R AUXIN2L 76

SIF_IN1 8

DTV_SDIN 24

IECOUT0 27

44 SQ_R+

45 SQ_R-

5

34

RXB_2P,2N,1P,1N,0P,0N,CP,CN

RXC_2P,2N,1P,1N,0P,0N,CP,CN

I1P0,VI1P2-VI1P19,VI1P21-VI1P29,VI1CLK,CLK0A,VS,HS,VI1ENB,VI1CLK2

DVB_CVBS

AM

77

18

DTV_LRCK DTV2_BCLK DTV2_SDIN DTV_SDIN IECOUT0

D12 ANALOG VIDEO I/F

F14 B13

AUDIO IF

D15 A13

C14,E15,B14,A14,B15,A15, E11,E10,F10,E9,F9,E8,F8,

A10

E7,F7,D6,D5,F5,E4,D3,F4

3-6,9-13,192,194,195,199, 203,206-212

(1,3,4,6,7,9,10,12)

8,C9,G6,F2,E1,F3,A9,B9,B8,C8,A7,C6,C5,A4, D2,D1,B4,C4,A3,B3,A2,B1,C2,C1,E3,E2,B10,C10, B7,C7,A6,B6,A5,B5

IC8001-PeaksLite2

MN2WS0047

A23,C22,E20,E18,B18,F16,F17,A18, C17,B17,A17,E17,B20,E19,A20,C19, F18,B19,A19,C18,B22,D20,A22,C21, F19,B21,A21,C20

LOSD0-LOSD15

O-HSO,CLK0,

VSI,HSI,CLKI

53,54,57-63,65,67-70,72-76, 81-84,87-90,94

IC4200

[C1AB00002886]

MIHO

(1,3,4,6,7,9,10,12)

CH.IS IF

POD. CI I/F

SD CARD I/F

VS,HS,CLK

RIN2-RIN9,GIN1-GIN9,BIN2-BIN9

HDMI1

HDMI2

JK4501

JK4500

Q2001

TS SERIAL

BUS

DATA

IC8301

[C1AB00002710]

COFDM

DEMODULATO

30 31

VIDEO_OUT

AUDIO_OUT

SIF_OUT

IFD1

IFD2

21 10 11

TUNER

17

TU2901

19

CI SLOT

JK8401

JK8801

SD SLOT

A6

SP_L-

SP_L

1,2

CN3

CN2

7,8

5,6

3,4

119

121 122

120

126

POWER

SP_R+

UNIT

TD2-

TD2+

TCLK2-

TC2+

TCLK2+

9

12

10

11

13

SP_R-

SP_L+

130

128

127

129

TB2-

TA2+

TC2-

TB2+

14

17

16

131 143

TA2-

19

145

144

150

146

TD1+

TCLK1-

TD1-

TC1+

TCLK1+

21

20

26

23

24

22

154

155

152

153

151

TB1-

TC1-

27

TA1-

TA1+

TB1+

28

29

31

30

A-BOARD

[EXCHANGE UNIT]

A5

TO LCD PANEL

SP_R

18

Panasonic TX-19LED8F, TX-19LED8FS, TX-19LXD8 Repair manual

Specifications

CONTENTS

Safety Precautions

Applicable Signals

Service Hints

Chassis Board Layout

Location of Lead Wiring

Setting Inspection

Self Check

Adjustment Method

Wiring diagram