Panasonic TX-42A400B Schematic

ORDER No. PCZ1403045CE

Service Manual

LCD Television

TX-42A400B

KM25E Chassis

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.

There are special components used in this equipment which are important for safety. These parts are marked in the Schematic Diagrams, Circuit Board Diagrams, Explorer 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

Warning

and

Safety Precautions







3

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).

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 ground such as a water pipe, as shown in Fig. 2.

3. Use Leakage Current Tester (Simpson 228 or equivalent) to measure the potential acr oss 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 shoul d 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 () V: Voltmeter 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

=1500

R

S

Input resistance: 1M Input capacitance:200pF Frequency range: 15Hz to 1MHz and d.c.respectively

R0=500

Fig. 2

Fig. 1

C

=0.22F

S

10k

F

U

(V)

1

0.022

V

U2 (V)

Prevention of Electrostatic Discharge (ESD) to Electrostatically

4

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 soldering 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-propelled 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 protective material from the leads 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 th e 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

About lead free solder (PbF)

5

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 (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

Service Navigation

6

Chassis Board Layout

P-BOARD

GK-BOARD

Board Name Function

A-Board AV Terminal, HDMI, USB, Digital Audio Out, TUNER DVB-T2/T/C,

DVB-T2/T/C Dem, CI slot, Ethernet, Headphones, MT5561, Speaker out,

P-Board Main Input, Power Supply K-Board Remote Receiver, Power and Timer LED, C.A.T.S

GK-Board Key control, Power switch

LD-Board LED Driver

LD-BOARD

A-BOARD

K-BOARD

Flash Memory, Peaks EEPROM

Service Hints

7

How to remove the backcover

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

Fig.5

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

SCREWS

(1) THE5ZL002N /4pcs/

(1)

Remove the 24 fixing screws and the backcover. (see Fig.7)

(2)

Fig.6

(2)

(3)

(2)

(3)

(2)

(1)

(2)

SCREWS

(2) THTD037J /17pcs/

(2)

(3)

(2)

(3) THEC1509 /7pcs/

(2)

(3)

(1)

Fig.7

(1)

(3)

(2)

Applicable Signals

8

Component (Y, Pb, Pr) (from AV2 terminal), HDMI

525 (480) / 60i,60p * * 625 (576) / 50i, 50p * *

750 (720) / 60p, 50p * * 1,125 (1,080) / 60i, 50i * * 1,125 (1,080) / 60p * 1,125 (1,080) / 50p * 1,125 (1,080) / 24p *

Note:

Signal name COMPONENT HDMI

 Signals other than above may not be displayed properly.  The above signals are reformatted for optimal viewing on your display.

Specifications

9

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

Rated Power Consumption: 91W

Stand-by Power Consumption: 0.35W Aerial Impedance: 75 unbalanced, Coaxial Type Receiving System: DVB-T/T2 Digital terrestrial services

42A400B (UK) PAL I UHF E21-E68

42A400B (Ireland)

PAL I VHF A-J

UHF E21-E69 CATV S1-S20 CATV S21-S41(Hyperband)

PAL 525/60 (AV only)

M.NTSC (AV only) NTSC (AV only)

Aerial - Rear:

UHF VHF/UHF

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

Humidity: 20%  80% RH (non condensing)

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 (COMPONENT/VIDEO) Audio (RCAx2) 500mV rms 10k (used for HDMI_ AV2 audio IN) Video (RCAx3) Y:1V p-p 75 (including synchronisation)

Pb, Pr: ±0.35V p-p 75

HDMI1, HDMI2 Type A Connectors

HDMI HDMI 2 : Content Type, Audio Return Channel

DIGITAL AUDIO OUT PCM / Dolby digital / DTS, Fibre optic USB USB 2.0 DC 5V Max 500mA ETHERNET RJ45, IEEE802.3 10BASE-T / 100BASE-TX CARD SLOT Common interface slot (Complies with CI+) x1

42A400B (UK) 42A400B (Ireland)

1 : Content Type

LCD screen: L5EDDYY00614

10

1920 x 1080, 16:9 Visible Diagonal 1060mm

Audio Output: 20W (2 x 10W) Headphones: 3.5mm, 8 Impedance

Accessories supplied : Remote Control

2 x R6 (UM3) Batteries

Dimensions:

Width: Height: Depth:

Including TV stand 963mm 610mm 247mm

TV set only 963mm 566mm 69mm

Mass:

Including TV stand 10.5kg TV set only 9.0kg

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

This equipment complies with the EMC standards listed below:

Technical Description

11

Model and Keys:

All KEYS are not generated for all models. The necessary KEYS are only generated and stored depend on the feature of models.

Model No.

TX-42A400B Yes Yes

CI PLUS HDCP

Keys

Setting Inspection

V

12

Voltage Confirmation

A board

Description Test point

STB3.3V TP 8006 3.19V - 3.46V PNL12V TP4300 11.5V - 12.5V SUB5V TP8002 4.9V - 5.1V SUB3.3V TP8003(TP6701) 3.19V - 3.46V SUB1.2V(VCCK1.2V) TP8000(TP8004) 1.14V - 1.26V DDR1.5V TP8001 1.48V - 1.56V DMD_1.2/1.1 TP5702 1.1V - 1.14V USB5V TP1014 4.92V - 5.25V

P board

Description Test point

32V (PANEL) TP7407 and GND TP7413 16V TP7410 and GND TP7413

5.3VS TP7501 and GND TP7413 5.2V ± 0.2V 5.2V ± 0.2V PFC TP7201 and GND TP7203

* Connect AC 230V to JK7101 connector (Main switch is OFF).

** Connect DC 3.3V to TV_SUB_ON P2 connector – pin 9 /TP7416/ or set main switch is ON.

oltage

oltage*

<1V <1V

<340V

oltage**

32V ± 1.6V

15.7V ± 0.8V 390V ± 15V

Service Mode Function

13

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 into Service Mode

While pressing [VOLUME ( - )] button on the main unit, press the [ ] button on the remote control for 3 times within 2 seconds.

How to exit

Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.

SERVICE

A

14

SERVICE ADJUST WB-ADJ OPTION

SOFT ver.1.050 MODEL ID 0B005100000020

S e r v i c e 1

EEP 1.04.0008 INV Cnt 0 PQ Ver 0.EU.060 PTCT 00.00.00.00.00 SQ Ver 0.EU.070

TIME 0 :28 Count 5

1

ADJUST DYNAMIC V-COM

BEFORE 0 PATTERN 1

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

089

2

ADJUST DYNAMIC

3

H-POS BEFORE 0

1,2:MAIN SELECT

4

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

1 2

WB-ADJ DYNAMIC R-GAIN

BEFORE 96

COLOR TEMP Cool

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

96

WB-ADJ DYNAMIC G-GAIN

3

BEFORE A9

COLOR TEMP Cool

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

4

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

1 2

OPTION DYNAMIC BootLoader upgrade

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

NO

0

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 each option item.  Press the OK button after each adjustment has been made to store the required values.

216

DJUST DYNAMIC

3

H-AMP BEFORE 0

1,2:MAIN SELECT

4

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

WB-ADJ DYNAMIC

9

B-GAIN

3

BEFORE FF

COLOR TEMP Cool

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

4

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

0

FF

ADJUST DYNAMIC

3

V-POS BEFORE 0

1,2:MAIN SELECT

4

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

WB-ADJ DYNAMIC R-CENT

3

BEFORE 78

COLOR TEMP Cool

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

4

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

0

78

DJUST DYNAMIC

3

V-AMP BEFORE 0

1,2:MAIN SELECT

4

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

WB-ADJ DYNAMIC G-CENT

3

BEFORE 80

COLOR TEMP Cool

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

4

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

0

80

WB-ADJ DYNAMIC B-CENT

3

BEFORE A0 METHOD 02

COLOR TEMP Cool

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

4

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

0

Hotel Mode

15

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

0

Initial VOL Level

Maximum VOL Level

Button Lock

Remote Lock

Off

100

Off

Select

EXIT

Change

EXIT

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/TV/AV1/AV2/HDMI1/HDMI2 *Off: give priority to the last memory. However, Euro Model is compulsorily set to TV.

Selection: 0

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

Selection: Off/MENU/ALL

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

3. To exit the “Hotel mode”: Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control or pressing the [EXIT] button on the remote control.

4. Explain the Hotel mode setup menu.

Self Check

p

16

How to access

Self-check indication only: While pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control.

Self-check indication and forced to factory shipment setting: While pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.

How to exit

Switch off the power with the [POWER] button on the main unit.

TX-42A400B

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

Panasonic 2014 LCD

Self Check Com

TUN OK EEPROM OK ID OK FE2 OK MAC OK

SOFT Ver. 1.050 EEP 1.04.0008 Model id 0B005100000020 PQ Ver 0.EU.060 SQ Ver 0.EU.070

lete

Display Ref. No. Description P.C.B. TUN TU6704 TUNER A-Board EEPROM IC8902 EEPROM A-Board ID IC8900A CI+ A-Board FE2 IC6800 DVB-T2/T/C Demodulator A-Board MAC IC8902 MAC A-Board

Power LED blinking timing chart

17

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

Blinking timing Contents Check point

4 sec

Light No Light

A BOARD

LD BOARD

PANEL

3 POWER SOS

9 SOUND_SOS

A BOARD

P BOARD

A BOARD

Adjustment Method

18

White Balance Adjustment

Instrument Name Connect to Remarks

1. Remote controller

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

3. Comunication jig

4. Computer for external control

Procedure Remarks

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

Normal Highlight x: 0.273  0.010 y: 0.278  0.010

Normal Lowlight x: 0.273  0.010 y: 0.278  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 than 20 min at above room temperature.

Applied signal 100% full colour bar

0.7V p-p white peak 85% modulation

100% WHITE

50% GRAY

Wiring Diagram

19

LCD PANEL

DIGITAL

AUDIO OUT

ETHERNET

USB1

CI SLOT

D3101

JK8650

JK8450

JK8400

SERVICE

CN0100

TUNER

TU6704

LD2

A11

A02

LD-BOARD

LD1

P4

P2

GK-BOARD

GK4

P5

P-BOARD

JK7101

YUV, V IN

AUDIO IN

HDMI2

JK4701

HDMI1

JK4700

HP

JK3111A

RCA

JK3101

JK3011

AV SCART

A-BOARD

A12 SP

A10

K10

K-BOARD

Block Diagram (1/2)

SP_L

SP_R

20

A-BOARD

SUB3.3V

11

SDA/SCL 2,4

AGC 7

IF_N,P 5,6

TU6704

TUNER DVB-A/T2

IIC

AGC

IF_N,P

AGC

IF_P,N

48

IC6800

[C1AB00004028]

38,37

DVB-T/T2/C DEM

35

34

3,4,5,8,9,12

13,14,15,16,17

45,46

29

SUB3.3V

DMD _1.2/1.1V

Parallel TS

CI SLOT

JK8400

17,18 51,52

SUB_CI_5V

TS Paraller Input

TS Paraller Output

CI DATA

STM-SQ

SBO/I

SDBOOT

RED_LED

SERVICE

CN0100

SUB5V

IIC

SUB3.3V

IC8900A

SPI_ROM

SUB3.3V

IC8901

SPI_ROM

SUB3.3V

IC8902

EEPROM

16V

1

A12

R+

10,11

9,16,25,32

18

5

2 3

L-

R-

14,15 26,27

IC4900

[C1AB00003984]

AUDIO AMP

7

6

4

L+

30,31

8

AV_VOUT 19

AV_V 20

AV_RED/C 15

AV_GREEN 11

AV_BLUE 7

JK3011

AV_LOUT 3

AV 21PIN SCART

AV_ROUT 1

JK3101

Y/Vin,PB,PR

IN

AUDIO

HP-OUT

JK3111A

D3101

Digital

Audio Out

HDMI1

JK4700

JK4701

HDMI2

AV_L 6

AV_R 2

Y

PB

PR

L

R

L

R

SUB3.3V

2_RX

HPD1

5VDET1

SDA

SCL

CEC

1_RX

HPD0

5VDET0

SDA

SCL

CEC

HP_L

HP_R

VOUT

VIN

SCART_R

SCART_G

SCART_B

SCART_LIN

LOUT

SCART_RIN

ROUT

P_PR0

P_B0

P_Y0 /

P_COM0

LIN_TERMINAL

RIN_TERMINAL

AESPIF0

ARC

LOUT ROUT

AESPIF0 ARC

7 1

Audio Amp

9 11

IC3001

IC3301

Amp

VBUS

3

4

IC5602

1

6

SUB5V

1

JK8450

10,19

OD

SW

USB

13

15

USB0DN

2

X6800

SCART_R

SCART_G

SCART_B

P_PR0

P_B0

P_Y0

P_SOY0

SCART_LIN

SCART_RIN

LIN_TERMINAL

RIN_TERMINAL

6

2

16V

8

SUB3.3V

USB0DP

3

IF2_N,P

AGC2

VOUT

VIN

LOUT

ROUT

HP_L

HP_R

2_RX

1_RX

J15

W18,Y19

W17

Y17

Y14

W14

V13

W16

U15

U14

V14

U20

R20

T20

R19

R16

P16

T18

U19

R4

F16

IIC

Demod

Video Out

Video input

Audio input

Audio output

HDMI Input

USB I/F

USB0DP

USB0DN

FE_XRST

U3

LAN I/F

Y2

TXOP

2

1

ETHERNET

JK8650

CI GPIO

Y1

RXIP

TXON

RXIP

4

TS Paraller Input

POWER MANAGEMENT

J16

L17

W3

W4

RXIN

HPD1

HPD0

RXIN

5

Ci Adress

System Bus

TS Paraller Output

HDMI I/F

J14

K14

J18

K16

J17

CEC

HDMI_2_SCL

HDMI_1_SDA

SERVICE

T3

U7

REMOTE

R_LED_ON

G_LED_ON

SERIAL

IC8001

[C1AB00004199]

MT5561

F3

V6

G6

U8

F2

AI

BL_ON

BL_SOS

POWER_ON

P8

KEY

E6

PWM1

SERIAL

STB5V

R8145

A02

16V

1,3,5

SDA/SCL

STB5.3V

SUB_ON

11

EEPROM WP

IIC

DATA

KEY

POWER_ON

3

7

4

2

TO P2

BL_SOS

6

8

9-10

BL_ON

12

10

PWM1

12

MCLK

SOUND_SOS

F1

C2

A10

SDATAO

D1 C1

AUDIO Output

LVDS I/F

R_LED_ON

G_LED_ON

STB3.3V

SUB_AI_3.3V

3

1

5

TO K10

BCLK

C8,D8,C7,D7 D6,C6,B6,A6

D5,C5,B2,A2 D3,C3,D4,C4 B4,A4

AI

REMOTE

4

2

7

LRCLK

F3

P_OSCL0 P_OSDA0 P_OSCL1 P_OSDA1

SUB1.2V AVDD3V3 3V3SB DVDD3.3V VCCK DDRV

1

IIC

IC4300

REG

IC5701

REG

IC8005

REG

IC8400

REG

3

16V

2

DMD_1.2/1.1V

1

SUB3.3V

8

SUB3.3V

5

16V

2

SUB_CI_5V

5

SUB5V

1

LVDS

PNL12V

VCCK1.2V

16V

DDR1.5V

16V

SUB5V

16V

STB3.3V

STB5V

DVDD3.3V

SUB3.3V

3V3SB

SUB3.3V

SUB1.2V

VCCK1.2V

AVDD3V3

SUB3.3V

VCCK

VCCK1.2V

DDRV

DDR1.5V

PNL12V

5

IC8002

2

5

IC8003

2

5

IC8004

2

3

IC8008

4

L8000

L8007

R8121

Q8002

L8004

L8005

A11

13,14,19,20 21,22,23,24

16,17,29,30 32,33,35,36 37,38,39,40

1-4

Reg

TO PANEL

Panasonic TX-42A400B Schematic

CONTENTS

Safety Precautions

Service Hints

Applicable Signals

Specifications

Technical Description

Setting Inspection

Service Mode Function

SERVICE

Hotel Mode

Self Check

Power LED blinking timing chart

Adjustment Method

Wiring Diagram