Panasonic TX-32LXD7, TX-32LED7F, TX-26LXD7, TX-26LED7F Service manual

ORDER No. PCZ0704032CE

Service Manual

Colour LCD Television

TX-32LXD7

TX-32LED7F

TX-26LXD7

TX-26LED7F

Specifications

(Informations in brackets [ ] refers to model 26”)

wer Source: 220-240V AC, 50Hz

Po

Power Consumption 115W [100W] Stand-by Power Consumption: 1.0W (TV

Aerial Impedance: 75Ω unbalanced, Receiving System: LXD7 LED7F

Receiving Channels: LXD7 LED7F

Operating Conditions: Temper

Scanning format: 480i(60Hz), 4

Intermediate Frequency: Video/Audio LXD7 LED7F

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

13W (TV+DVB set to record)

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)

UHF E21-E68 VHF E2-E12 VHF H1-H2 (ITALY)

Humidity: 20% ÷ 80

1.080i(50Hz), 1.080p(60Hz), 1.080p(50Hz)

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

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

ONLY)

Coaxial Type

NTSC (AV only)

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)

ature: 0°C ÷ 35°C

% RH (non condensing)

80p(60Hz), 576i(50Hz), 576p(50Hz), 720p(60Hz), 720p(50Hz), 1.080i(60Hz),

32,4MHz (D/K), 32,66MHz (CZ STEREO) 40,4MHz (L’), 39,75MHz (L’ NICAM)

GLP22 Chassis

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

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

Panasonic CS ( U.K. ) Ltd.

WILLOUGHBY ROAD,

BRACKNELL,

BERKS.,

RG12 8FT.

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

AV2 OUT Video (21 pin) 1V p-p 75Ω

Audio (21 pin) 500mV rms 1kΩ

C:0,3V p-p 75Ω

AV3 IN S-Video IN (4-pin)Y: 1V p-p 75Ω

HDMI Type A Connector COMPONENT Video (RCAx3) Y:1V p-p 75Ω (including s

AUDIO IN Audio (RCAx2) 500mV rms 10kΩ (

AUDIO OUT Audio (RCAx2) 500mV rms 1kΩ (high I

LCD screen: L5EDD8

Audio Output: 20W (2x10W) Headphones: 3,5mm (M3 Accessories supplied : Remote Con Dimensions: LXD7

Including TV stand 615mm 791mm 239mm

TV set only 563mm 791mm 117mm

Net weight: 17,5kg Specifications are subject to change w

Weights and dimensions shown are approximate.

C:0,286V p-p 75Ω Audio (RCAx2) 500mV rms 10kΩ Video (RCAx1) 1V p-p 75Ω

Pb, Pr: ±0,35V p-p 75Ω

for YUV; HDMI1)

mpedance)

Q00029 [L5EDD6Q00023] 1366 x 768 XGA, 16:9 Visible Diagonal 800mm [660mm]

), 8Ω Impedance

trol 2 x R6 (UM3) Batteries

Height: Width: Depth: [525mm] [657mm] [239mm]

[473mm] [657mm] [117mm]]

[15kg]

ithout notice.

ynchronization)

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

A

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 as insulation barriers, insulation papers shields are properly

installed.

3. After servicing, make the follo

4. Always ensure panel TKP0E16001 is correctly re

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 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.

wing touch current checks to prevent the customer from being exposed to shock hazards.

placed before returning to customer (see Fig.1).

Fig. 1

Measuring network for TOUCH CURRENTS

COLD WATER PIPE (EARTH GROUND)

Fig. 2

CS=0.22µF

10k

U

1

0.022µF

V

U2 (V)

RS=1500

TO

PPLIANCES 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

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

R0=500

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 commerciall y av ailable 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 conductive 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 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).

IMPORTANT SAFETY NOTICE

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.

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 s 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 so 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 comp onent side for excess solder which may

flow onto the opposite side. (see Fig.3)

older, and PbF will refer to Lead Free Solder.

lder on the pins or solder area before

Fig.3

Suggested Pb free solder

There are several kinds of Pb free solder available for purchase. T However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used. (see Fig.4)

his product uses Sn+Ag+Cu (tin, silver, copper) solder.

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 *

Note:

• Signals other than above may not be displayed properly.

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

7

Service Hints

How to remove the backcover

Remove the 18[16] fixing screws. (see Fig.5)

SCREWS

How to remove the Pedestal assembly

Lay the main unit face down. (see Fig.6)

SCREWS

Fig.5

Fig.6

Remove the 4 fixing screws and the pedestal assembly. (see Fig.7)

Fig.7

8

SCREWS

Chassis Board Layout

AP-BOARD

H-BOARD

G-BOARD

Board Name Function

AP-Board Power Supply Regulator

DG-Board Global Core, HDMI, IDTV Processor, D/A Converter

G-Board Side AV Connector H-Board AV Connector, T V tuner, AV Switch P-Board Main Input, Power Supply, Main Switch V-Board Remote Receiver, LED IR, Cats

Setting Inspection

Voltage Confirmation

P-BOARD

DG-BOARD

V-BOARD

Confirm the following voltages:

AP board

Description Test point Position Normal mode Stand by mode Active stand by mode

Sub_5V TP3805 AP3, pin 2,3 5,04V +/- 0,25V Max 2V 5,04V +/- 0,25V Panel 5/12V TP3802 AP4, pin 12,13 12,13V +/- 0,45V Max 2V Max 2V Sound_Vcc TP3804 AP3, pin 21,22 15,10V +/- 0,45V Max 2V Max 2V 9V TP3808 Q3814, pin 5,6,7,8 8,93V +/- 0,25V 8,93V +/- 0,25V 8,93V +/- 0,25V

STBY_5V TP3810 AP4, pin 21 5,0V +/- 0,25V 5,0 +/- 0,25V 5,0V +/- 0,25V

P board

24V TP852 P4, pin 5,6,7,8 24,5V + /- 1V 24,5V +/- 1V

DG board

Sub1,2V TP5601 1,17V - 1,32V Sub1,8V TP5602 1,7V - 1,9V Sub3,3V TP5600 3,14V - 3,46V MHQ1,2V TP4209 1,1V - 1,3V

9

Self Check

A

f

A

f

A

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-26LXD7

TX-32LXD7

TX-26LED7F

26

DV O.K.

VSW O.K.

DAV O.K.

SW O.K. GENX O.K. MEM1 O.K. MEM2 O.K. TUN1 O.K. D-TUN O.K. OFDM O.K.

32

DV O.K. VSW O.K.

DAV O.K.

SW O.K. GENX O.K. MEM1 O.K. MEM2 O.K. TUN1 O.K. D-TUN O.K. OFDM O.K.

26

DV O.K. VSW O.K.

DAV O.K.

SW O.K. GENX O.K. MEM1 O.K. MEM2 O.K. TUN1 O.K. D-TUN O.K. OFDM O.K.

Panasonic 2007LCD

Self Check Complete

PEAKS-SOFT 1.050 PEAKS-EEP 01.05.0024 GenX-SOFT 1.00.00 GenX-EEP 1.02.00 GenX-ROMCORR 1.01.00

Panasonic 2007LCD

Self Check Complete

PEAKS-SOFT 1.050 PEAKS-EEP 01.05.0023 GenX-SOFT 1.00.00 GenX-EEP 1.02.00 GenX-ROMCORR 1.01.00

Panasonic 2007LCD

Self Check Complete

PEAKS-SOFT PEAKS-EEP GenX-SOFT GenX-EEP GenX-ROMCORR

2.050

02.05.0015

1.00.00

1.02.00

1.01.00

26led70.dat:000009

SUM OPTION 1

OPTION 2 OPTION 3 CHECK

MODEL ID

32led70.dat:00000b

SUM OPTION 1

OPTION 2 OPTION 3 CHECK

MODEL ID

26led70f.dat:000056

SUM OPTION 1

OPTION 2 OPTION 3 CHECK

MODEL ID

1863 0c

ea 7f

75 04

189e

2c ea

7f

95 04

03040000 00000002

189d

2c ea

7

95 04

03040000 00000004

030a0000 00000002

Panasonic 2007LCD

Self Check Complete

2.050

02.05.0014

1.00.00

1.02.00

1.01.00

32led70f.dat:000067

SUM OPTION 1

OPTION 2 OPTION 3

75

CHECK

04

MODEL ID

1872

0c ea

7

030a000 0000004

TX-32LED7F

32

DV O.K. VSW O.K.

DAV O.K.

SW O.K. GENX O.K. MEM1 O.K. MEM2 O.K. TUN1 O.K. D-TUN O.K. OFDM O.K.

PEAKS-SOFT PEAKS-EEP GenX-SOFT GenX-EEP GenX-ROMCORR

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

ADV IC4510 A/D CONVERTER DG-Board

VSW IC3001 AV SWITCH H-Board

ADAV IC2106 AUDIO PROCESSOR H-Board

ASW IC3101 AV SWITCH H-Board

TUN1 TU3200 ANALOG TUNER H-Board GENX IC1100 MICROPROCESSOR DG-Board MEM1 IC1101 EEPROM DG-Board MEM2 IC8601 EEPROM DG-Board

D-TUN TU8301 DIGITAL TUNER DG-Board

OFDM IC8301 COFDM DEMODULATOR DG-Board

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

10

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 a defective block can be identified by number of blinking of the Power LED on the front panel of the unit.

nd reset to the stand by mode. At this time, the

Blinking

times

Once

1 INVERTER_SOS

3 SOS

4 DTV_9V

5 SUB_5V

6 MAIN_9V

7 MAIN_5V DG BOARD

8 MAIN_3.3V DG BOARD

Blinking timing Contents Check point

4 sec

Light No Light

POWER UNIT

LCD PANEL

DG BOARD

AP BOARD, H BOARD

AP BOARD

DG BOARD, H BOARD

AP BOARD, H BOARD DG BOARD, V BOARD

AP BOARD

H BOARD, DG BOARD

9 SOUND_SOS

DG BOARD

H BOARD

11

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 e

xit button on remote control.

0

12

SERVICE

Y

A

Y

y

SERVICE ADJUST WB-ADJ OPTION SRV-TOOL

Peaks SOFT 2.020 OPTION 1 0c Peaks EEP 02.00.0015 OPTION 2 ea LSI DATA 0.00.55 OPTION 3 7f GenX SOFT 1.00.00 Model ID 04 GenX EEP 1.02.00 030a0000 GenX ROMCOR 1.01.00 00000002 HQ1L EEP -- Time 00000:45 Count 0000002

1

ADJUST DYNAMIC CONTRAST

MAX

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

ELLOW:AUTO ADJUST VOL:ADJUST OK :WRITE

1

000

2

ADJUST DYNAMIC

3

COLOR

1,2:MAIN SELECT

4

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

2

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.

DJUST DYNAMIC

3

3C

TINT

1,2:MAIN SELECT

4

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

00

ADJUST DYNAMIC

3

SUB-BRT

1,2:MAIN SELECT

4

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

808

DJUST DYNAMIC

3

BACKLIGHT

1,2:MAIN SELECT

4

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

285

DJUST DYNAMIC

H-POS

3

1,2:MAIN SELECT

4

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

DJUST DYNAMIC

0

H-AMP

3

1,2:MAIN SELECT

4

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

0

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

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

ROM

1

WB-ADJ DYNAMIC

FC

G-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

F0

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

WB-ADJ DYNAMIC

C8

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

6D

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

WB-ADJ DYNAMIC

80

B-CENT

3

COLOR TEMP NORMAL

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

44

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

7B

2

OPTION DYNAMIC STBY-SET

3

1,2:MAIN SELECT

4

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

OPTION DYNAMIC

00

Emergency

3

1,2:MAIN SELECT

4

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

ON

OPTION DYNAMIC

/C Dela

3

1,2:MAIN SELECT

4

3,4:SUB 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

00001100

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

11101010

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

01111111

2

SRV-TOOL DYNAMIC

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

00

13

Option Bytes Description

OPTION1

0 ATP Speed Slow (1) / Fast (0) 1 TXT Ch On (1) / Off (0) 2 ID-1 On (1) / Off (0) 3 Macrovision Auto Evaluation On (1) / Off (0) 4 SRS Surround On (1) / Off (0) 5 Teletext Top Off (1) / On (0) 6 Not Use Not Use 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.Europe) On (1) / Off (0) 6 NICAM priority (Special) On (1) / Off (0) 7 Not Use Not Use

14

Adjustment Method

Sub-Contrast/White Balance Adjustment

Instrument Name Connect to Remarks

1. Remote controller

2. LCD WB meter (Minolta CS-1000A equivalent)

3. Comunication jig

4. Computer for external control

Procedure Remarks

Subcontrast adjustment

1. Receive PAL colour bar (100% 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

Correlation can be also taken by CA-21

0 or equivalent

Let the panel standfor more than 3 hours at more th Basically perform adjustment in the ambi

ent environment of room temperature more than 20 °C. The aging time is more than20 min at above ro

Applied signal

100% full colour bar 0,7V p-p white peak

87.5% modulation

an 20 °C.

om temperature.

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

LXD7 LED7F

WHITE Normal

x: 0,2890 ± 0,01

y:0,3020 ± 0,010 y:0,2930 ± 0,010

GRAY Normal GRAY Normal

x: 0,2860 ± 0,01 y:0,3050 ± 0,01

0 x:0,2850 ± 0,010

0 x: 0,2850 ± 0,010 0 y:0,2930 ± 0,010

WHITE Normal

100% WHITE

50% GRAY

15

Wiring diagram

LCD PANEL

SERVICE

SD CARD

JK8702

CI SLOT

SERVICE

DG33

JK8801

DG5

JK8401

DG-BOARD

DG26

HDMI1

V-BOARD

KEY CONTROL

AP5

P2

P6

DG6

H6

DG2

H2

DG1

V1

AP4

JK2002

AUDIO OUT

JK3005

YUV, AUDIO IN

AP-BOARD

H3 H4

AP3

AP2

H-BOARD

H12

SP L / R

H51

G51

AV3

JK3700

P4

P-BOARD

P1

MAINS IN

G-BOARD

AV1

JK3003B

AV2

JK3002B

16

AV1_V 20

A

V

Y

V

AV1_VOUT 19

AV1_RED 15

AV1_GREEN 11

AV1_BLUE 7

JK3002B

AV1_LOUT 3

V1 21PIN SCART

AV1_ROUT 1

AV2_V 20

AV2_VOUT 19

AV2_C 15

AV2 GREEN 11

AV2 BLUE 7

JK3003B

AV2_LOUT 3

V2 21PIN SCART

AV2_ROUT 1

JK3005

YPBPR, AUDIO IN

Video & Stereo Audio Block Diagram

H-BOARD

1 AV1_V

33 AV1_VO 79 AV1_RED

AV1_L 6

AV1_R 2

AV2_L 6

AV2_R 2

Y PB PR

L

R

YPBPR_Y YPBPR_PB

YPBPR_PR PC_LIN PC_RIN

PC_LIN 10

PC_RIN 11

IC3101

AUDIO SWITCH

6 AV4_L

7 AV4_R

AV2_RO 26

AV2_R 15

AV2_LO 25

DTV_SL 39

DTV_SR 40

AV2_L 14

AV1_R 17

AV1_RO 24

TV_L 41

TV_R 42

AV_R 33

AV_L 32

77 AV1_GREEN 81 AV1_BLUE 8,10 AV2_V 31 AV2_VO

12 AV2_C

53 AV3_RED/C 51 AV3_GREEN

55 AV3_BLUE

IC2002

AUDIO

DAC

10

11

AV1_L 16

AV1_LO 23

4

1 2 3

4

63 YPBPR_Y

IC2006

VIDEO SWITCH

65 YPBPR_PB

67 YPBPR_PR

2

IC3001

N15876A)

(

MAIN_Y_OUT

MAIN_PB_OUT 39 MAIN_PR_OUT

MAIN_RGB_CVBS_OUT 44

DVB_CVBS 20

MAIN_RF_CVBS

97 AV4_

95 AV4_

99 AV4_C

AMPLIFIER

40 38

91

5

3

IC2012

HP

7

HP_ROUT

HP_LOUT

Q3200

761

IC2011

AUDIO

AMPLIFIER

76 AINL2 77 AINR2 34 XOUT 35 BCLK 37 SDTI 36 LRCK

58 HPOUTR1 57 HPOUTL1 74 AUXOUTL2

75 AUXOUTR2 79 AV_R 78 AV_L

AUDIOOUT_L AUDIOOUT_R

Q2015

Q2021

2

AUXOUTL1 72

AUXOUTR1 73

Q2017

Q2016

8

SIF_IN1

DTV_BCLK 19

43 SQ_L-

18

43

TU3200

21

TUNER

VIDEO_OUT

DTV_SDIN 24

IC2106

AUDIO

PROCESSOR

42 SQ_L+

16

IC2301

AUDIO

AMPLIFIER

36

10

11

AM

SIF_OUT

MAIN_Y_OUT MAIN_PB_OUT MAIN_PR_OUT

MAIN_RGB_CVBS_OUT

DTV_LRCK 18

DVB_CVBS DTV_BCLK

DTV_SDIN DTV_LRCK DTV2_SDIN

HDMI_BCLK

HDMI_SDIN

HDMI_LRCK

SPDF_IN

SPDIF_IN 39

DTV2_SDIN 23

HDMI_SDIN 22

HDMI_BCLK 27

HDMI_LRCK 26

45 SQ_R-

44 SQ_R+

8

6

31

24

H6

L

R

3 5 7

10 26

58 60 62 64 66 68 70 72

DG6

3 5 7

10 26 58

60 62 64 66 68 70 72

JK2002

AUDIO OUT

TU8301

JK8401

JK4501

DG-BOARD (EXCHANGE UNIT)

MAIN_Y/CVBS MAIN_PB/C MAIN_PR RGB_CVBS

DVB_CVBS DTV_BCKL

DTV_SDIN DTV_LRCK DTV2_SDIN HDMI_BCLK

HDMI_SDIN HDMI_LRCK SPDIF_IN

TUNER

DIGITAL

DEMODULATOR

CI SLOT

HDMI 1

DVB_CVBS DTV_BCKL DTV_SDIN DTV_LRCK

DTV2_SDIN

IC8301

COFDM

4

Q4516 Q4515

Q4514

Q4519 Q4517

IC2000

2

TS

SERIAL

BUS

DATA

99 Y_IN 78 PB/C 94 PR 80 RGB_CVBS 97 SOY

8 HDMI_BCLK 3 HDMI_SDIN 7 HDMI_LRCK 2 SPDIF

112,113,115,116,

118,119,121,122

RXA_CN,CP,0N,0P,1N,1P,2N,2P

16,17,18,24-33, 38-48,51-53,55,

58

IC4510

ADV7493BBSTZ

SPDIF_IN

D12 D13 A13 F14 D15 A10

IC8002

DDR2-0

IC8003

DDR2-1

VI1P2-VI1P9,VI1P12-VI1P19,VI1P22-VI1P29

CLK,CLKOA,VSYNC,HSYNC,ENB

A2-A9,B1,B3-B10,C1,C2, C4-C10,D1,D2,E2,E3

IC8001-PeaksLite2

MN2WS0039A

VIDEO / AUDIO IF

B25,B26,C25,C26,D25,D 26,E25,E26,F25,F26,F25, F26,G25,G26

TE1P,TE1N,TD1P,TD1N,TCLK1P,TCLK1N,

TC1P,TC1N,TB1P,TB1N,TA1P,TA1N

IC8601

EEPROM

IC8554

16 MB FLASH

9

R

L

JK3700

19

11

17

7

5

G-BOARD

3

1

10815

H51

15

13

AV4_R AV4_L AV4_V

AV4_Y

Y

AV4_C

C

L

HP_LOUT HP_ROUT

G51

R

7

H12

SP_R

1

3

2

4

DG5

SP_L

1-15

TO LCD PANEL

17

Power Supply Block Diagram

8

−

A

AP3

Y

A

V

A

V

6

V

H-BOARD

IC3001

IDEO

SWITCH

6, 25, 45, 69

IC3101

AUDIO

SWITCH

IC2013

REG

5

5V

8

IC2012

HP AMPLIFIER

DTV9V

5

MAIN9V

4

IC2301

AUDIO

AMPLIFIER

26, 27, 32, 35, 40, 41

1, 21, 22, 23, 44

TU3200

5, 9, 16

IC2002

AUDIO DAC

18

14

SOUND15V SOUND12V

SUB5

BT30

SUB5

12V_PANEL

LCD3,3

(DTV9V) 9V_SUB

5V_SUB

IC2106

AUDIO

PROCESSOR

4, 53, 59, 68, 71

14, 21, 31, 40, 51

IC2007

AMPLIFIER

IC2011

AMPLIFIER

SUB3,3V

MAIN9

12

29

8

AUD3,3V

SUB3,3V

DVDD1,8V

DTV9V

STB5

3,3V

AUD3,3V

DVDD1,8V

SOUND12V

BT30V

IC2010

5Vout

IC2008

1Vout

IC2107

1Vout

IC2303

1Vout

Q2639

IC2610

REGULATOR

REG

Vin1

Vin7

Vin3

SUB5V

SUB3,3V

SOUND15V

DTV9V

MAIN_9V SUB_5V DTV9V

SOUND15V

12V_PANEL

STB+5V

H3

1

2-3 6-7

21-22

12-13

21

AP-BOARD

1 2-3 6-7

21-22

12-13

21

MAIN_9V

SUB_5V SUB_9V

UDIO_16V

PANEL_5V/12V

5V_STB

5V_STBY

SUB_9V MAIN_9V

SUB_5V

PANEL_5V/12V

1

UDIO_16V

IC3805

REG

Q3810 Q3811

11−14

IC3804

9V

Q3814

IC3803

2

IC3802

REG

IC3801

6

REG

MAIN IN

41

P1

8

D3819

1

6

1

21

6−8

12

Q3813

5−8

F801

24V_HEADER

SW 801

D854 D851

Q851

PC801

LF804

LINE

FILTER

T801

13

8

LF802

LINE

FILTER

3 4

6 2

P-BOARD

D801

-

IC802

MAIN PS CONTROL

11

15

10

19

20

~

+

~

T802

2 4

7

23

7

D818

DG-BOARD

P16, H21, P3, E22, E23, F21, C12, E14,

AA8, AA9, A25, A26, B24, C23, D7, D8,

D16, D17, D22, E21, F11, F12, F15, F20,

G4, H4, J6, K6, N6, P6, R4, T4, U6,

M17, U15, T17, N17, R17, T15, U16,

AB15, AC15, AD 15, AE15, AF15, U14,

N10, P10, R10, R11, R12, R13, T10,

T11, T12, T13, U10, U11, U12, U13,

AA14, AB14, AC14, AD14, AE14, AF14

IC8001-PeaksLite

PROCESSOR

K23, K26, M21, M23, N24, P25, R21,

T25, U24, V22, W26, Y22, Y24, AA21,

AB19, AB22, AB 25, AC1 8, AC23 , AD17,

AD22, AD25, AE16, AE21, AF20, AF26

A1, E1, M9, J9, R1, J1, A9, C1, C3, C7,

A1, E1, M9, J9, R1, A9, C1, C3, C7, C9,

2, 13, 15, 16, 17, 18, 33, 45

IC8301

LVDS DRIVER

C9, E9, G1, G3, G7, G9

IC8002

MEMORY

E9, G1, G3, G7, G9, J1

IC8003

MEMORY

7, 19, 21, 28

AC10, AC11

1, 21, 22, 23, 44

IC8302

1,8V

1Vout

REG

SUB3,3V

SUB1,2

SUB1,8V

SOUND12V

1,8V_DDRI/F

SUB3,3V

Vin8

1-2

5-6 8-9

LCD3,3

12−14

12-14

12V_PANEL

DTV9V

IC8004

CLOCK

GENERATOR

IC8401

DATA BUFFER

IC8402

TS BUFFER

IC8404

TS BUFFER

IC8405

TS BUFFER

IC8406

TS BUFFER

IC8407

TS BUFFER

IC8408

TS BUFFER

IC8409

TS BUFFER

JK8401

CI SLOT

17, 18 51, 52

5V_SUB

5, 13, 15

17-18

1

24

20

SUB3,3

21 23

MAIN9

SUB3,3V

SUB5V

SUB3,3V

SUB3,3

SUB5V SUB5V

H2

DG2

STB5

SUB5V

SUB1,8V SUB1,2V

SUB3,3V

SUB5V SUB3,3V

SUB5V STB5V

TVDD3,3V AVDD3,3V

DVDDIO3,3V

CVDD1,8

DVDD1,8V

IC8403

1Vin

Peaks-LITE2 POWER

3Vout

IC5601

REG

12Vout

IC5600

23Vout

REG

MAIN5V/

MAIN3,3V

Q5692 Q5693

GenX4 POWER D5671 D5673

IC5670

1Vin

1Vout

5Vout

1Vout

1

Vout

IC4506

IC4507

IC4508

IC4509

REG

Vout6

Vin

Vout5

Vin7

Vin1

Vin8

23

17

5VCARD

DTV9V

MAIN5V

MAIN3,3V

STB3,3V

SUB5V

SUB3,3V

IC1100

MICROPROCESSOR

31, 50, 74, 78, 81, 85, 94, 108

IC8554

NOR FLASH

29, 43, 53

IC8621

DeMPX

IC8622

DeMPX

IC1101

EAROM

IC5671

RESET IC

IC5660

RESET IC

Q852

PC802

PC803

IC 851

REGULATOR

84, 88

STB3,3V

DV7493BBSTZ

SUB3,3V

20

SUB3,3V

20

STB3,3V

5

111, 123, 127,

IC4510

23, 57, 142

68, 71, 101, 104, 109,

15, 35, 50, 67

IC4504

EEPROM

IC4515

COMPARATOR

IC2000

BUS BUFFER

139

125, 141

8

5

VDD3,3V

TVDD3,3V

DVDD1,8V CVDD1,8V

DVDDIO3,3V

MAIN3,3V

SUB5V

SUB3,3V

P12V

27, 29 30, 31

Q855

24V

1-4

P2

LCD PANEL

IC801

24V

1-4

P

V-BOARD

SUB5V

2

STB5

2

IC4501

EDID EPROM

IC4513

BUS REPEATER

IC4514

BUS REPEATER

IC8601

EEPROM

8

1

5, 8

1

5, 8

8

D4527

MAIN5

MAIN5V

MAIN3,3V

MAIN5V

MAIN3,3V

SUB3,3V

STB3.3

SUB5V

DG1

4

3, 11

SUB5V

4 212

STB3.3V

SUB5V

STB3,3V

STB3.3V STB3.3V

Q1004 Q1002

PC1001

RM1001

REMOTE

D1001

18

Control Block Diagram

A

Y

V

JK3002B

JK3003B

H - BOARD

AV1_SLOW 8

AV1_QLINK 10

AV1_FB 16

V1 21PIN SCART

AV2_SLOW 8

AV2_QLINK 10

AV2_FB 16

V2 21PIN SCART

R

JK2002

L

AUDIO OUT

MONITOROUT_MUTE

Q2002 Q2003

AV2_SLOW FB

AV3_FB AV1_FB AV1_SLOW SDA0B_5V SCL0B_5V VIDEO_STATUS

DAC_PD SCL0B_5V SDA0B_5V

AUDIO_MUTE

Q2102

Q2101

SOUND_SOS SDA0B

SCL0B AUDIO_XRST

TV_SUB_ON_DELAY

SDA0B_5V

SDA0B SCL0B_5V SCL0B

MUTE

Q2641

Q2640

4 46,74 48

49

IC3001

80

VIDEO SWITCH

83 84 85

22

IC3101

35

AUDIO SWITCH

36

15

PROCESSOR

16 17 50

IC2106

AUDIO

Q2635

AUDIO_MUTE DAC_PD

AMUTE

SOUND_SOS

AMUTE

SOS

MONITOROUT_MUTE

AUDIO_MUTE

SP_MUTE

HDMI_INT2

MONITOROUT_MUTE

AMUTE

SCL0B_5V SDA0B_5V AFC1

Q2301

6 5

2

IC2002

AUDIO DAC

7 17

5

IC2012

HP AMP

V1-2 OUT MUTE

Q2004 Q2006

D2028

Q2040

13 14

TUNER

20

IC2301

AUDIO AMP

D2637

Q2005 Q2007

MUTE SW

Q2034 D2031 D2032 Q2031

Q2039

FB SCL0B SDA0B AUDIO_XRST AUDIO_MUTE TV_SUB_ON_DELAY SP_MUTE

SOS

SOUND_SOS

AFC1 QLINK_AV2 QLINK_AV3

TUNER_MAIN_ON

TUNER_SUB_ON

FAN_CONT

KEY

PANEL_STBY_ON 24V_DET HDMI_INT2

VIDEO_STATUS

H6

12 28 30 32 33 34 35 38

39

41

44 46 48 49 51 54 55 56 74 79

DG6

IC5660

RESET IC

MAIN5

MAIN3.3V

Q5691 Q5690

IC4510

ADV7493B

HDMI CEC

Q1107 Q1108

IC1100

MICROPROCESSOR

IC4504

EEPROM

IC4513

LEVEL

TRANSLATING

IC8002

DDR2

IC8003

DDR2

IC8554

FLASH

IC8004

CLK GEN

IC8601

EEPROM

IC8001

PeaksLite2

IC4501

EEPROM

SERIAL bus

LVDS bus

DG - BOARD

(EXCHANGE UNIT)

HDMI CEC

TU8301

DIG TUNER

IC8301

COFDM DEM

HDMI1

JK4501

JK8401

CI SLOT

DATA

JK8801

SD CARD

Q2003

AP - BOARD

TUNER_SUB_ON

SOS

PANEL_ON

TUNER_MAIN_ON

H4

AP4

KE

PANEL_ON

9

SOS

24V_DET

TUNER_SUB_ON

TUNER_MAIN_ON

23

18

10

16

23

18

10

16

FAN_CONT

H3

AP3

9

18

9

18

V - BOARD

RM1001

REMOTE

OUT

D1102D1100

REMOTE

DG1

QLINK

IC1101

EEPROM

DG33

SERVICE

LCD PANEL

V1

SOS

TUNER_MAIN_ON

TUNER_SUB_ON

PANEL_ON

KEY

Q3816

Q3807

Q3803

Q3801 Q3809

BACKLIGHT_PSU_ON

24V_DET

PC1001

CATS

Q1004 Q1002

Q1010 Q1006

Q1007 Q1009

4

REMOTE

G_LED_ON

R_LED_ON

TIMER_REC_LED

AI_SENSOR

5 8 7 6 1

P - BOARD

KEY CONTROL

KEY SW

AP5

1

KEYSCAN

24V_DET

TUNER_SUB_ON

BACKLIGHT_PSU_ON

AP2

13 14 15

P4

24V_DET

13

TUNER_SUB_ON

14

BACKLIGHT_PSU_ON

15

Q857 Q851 Q853

Q852

PC801

19

Parts Location

The numbers on the exploded view below refer to the exploded view section of the Replacement Parts List.

28

7

NOTE:

(UK)

26

(CONTINENTAL)

39 27

3

16

13

12

11 14

20

NOTE:

The numbers on the exploded view below refer to the exploded view section of the Replacement Parts List.

5

36

[33]

38 20 32

[35]

9

25

36

[42]

29 19 41

[35]

22

1

21

18

17

4

34

[31]

6

8

10

15 30

2

34

[40]

23

37

24

21

Panasonic TX-32LXD7, TX-32LED7F, TX-26LXD7, TX-26LED7F Service manual

Specifications

CONTENTS

Safety Precautions

Applicable signals

Service Hints

Chassis Board Layout

Setting Inspection

Self Check

Power LED blinking timing chart

Service Mode Function

SERVICE

Option Bytes Description

Adjustment Method

Wiring diagram

Parts Location