Panasonic Viera TX-32LE7FA Manuale utente

Colour LCD Television

TX-32LE7FA

TX-32LE7LA

TX-32LE7PA

TX-32LE7F/SA

TX-32LE7P/SA

TX-26LE7FA

TX-26LE7LA

TX-26LE7PA

TX-26LE7F/SA

TX-R32LE7A

TX-R26LE7A

Specifications

(Information in brackets [ ] refers to model 26´´)

Power Source: 220-240V AC, 50Hz

Power Consumption: 121 [92W]

Stand-by Power

Consumption: 1W

Aerial Impedance: 75:unbalanced, Coaxial Type

Receiving System: PAL-B/G/I, D/K,

SECAM B/G, D/K, L/L’

PAL-525/60 (AV only)

M.NTSC(AVonly)

NTSC(AVonly)

Receiving Channels:

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: 5°C y35°C

Humidity: 5% y90% 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),

32,35MHz (NICAM)

Colour 34,47MHz (PAL)

34,5MHz, 34,65MHz (SECAM)

38,3MHz, 38,15MHz (SECAM L’)

Terminals:

AV1 IN Video (21 pin) 1V p-p 75:

Audio (21 pin) 500mV rms 10k:

RGB (21 pin) 0,7V p-p 75:

AV1 OUT Video (21 pin) 1V p-p 75:

Audio (21 pin) 500mV rms 1k:

AV2 IN Video (21 pin) 1V p-p 75:

Audio (21 pin) 500mV rms 10k:

RGB (21 pin) 0,7V p-p 75:

S-video IN Y: 1V p-p 75:

(21-pin) C:0,3V p-p 75:

AV2 OUT Video (21 pin) 1V p-p 75:

Audio (21 pin) 500mV rms 1k:

AV3 IN S-Video IN Y: 1V p-p 75:

(4-pin) C:0,286V p-p 75:

Audio (RCAx2) 500mV rms 10k:

Video (RCAx1) 1V p-p 75:

HDMI1 Type A Connector

COMPONENT YUV Video (RCAx3) Y:1V p-p 75:

Pr:

±0,35V[ p-p] 75:

Pb:

±0,35V[ p-p] 75:

AUDIO IN Audio (RCAx2) 500mV rms 10k:

(for YUV, HDMI1)

AUDIO OUT Audio (RCAx2) 500mV rms 1k:

LCD screen: L5EDD8Q00036 [L5EDD6Q00027]

1366 x 768 XGA, 16:9

Visible Diagonal 800mm [660mm]

Audio Output: 2x10W RMS

8:impedance

Headphones: 3,5mm, 8:Impedance

Accessories

supplied : Remote Control

2 x R6 (UM3) Batteries

Dimensions:

Height: Width: Depth:

Including TV stand 615mm 791mm 239mm

[525mm] [657mm] [239mm]

TV set only 563mm 791mm 107mm

[473mm] [657mm] [107mm]

Net weight: 16kg [12,5kg]

Specifications are subject to change without notice.

Weights and dimensions shown are approximate.

ORDER No. PCZ0710126CE

GLP21MA Chassis

Service Manual

Contents

SAFETY PRECAUTIONS ........................................... 3

GENERAL GUIDE LINES...................................... 3

TOUCH – CURRENT CHECK............................... 3

PREVENTION OF ELECTROSTATIC DISCHARGE

(ESD) TO ELECTROSTATICALLY SENSITIVE (ES)

DEVICES .................................................................... 4

ABOUT LEAD FREE SOLDER (PBF)......................... 5

SUGGESTED PB FREE SOLDER........................ 5

SERVICE HINTS ........................................................ 6

CHASSIS BOARD LAYOUT ....................................... 7

LOCATION OF LEAD WIRING ................................... 7

SETTING INSPECTION.............................................. 8

SELF-CHECK ............................................................. 9

ADJUSTMENT METHOD ......................................... 10

WIRING DIAGRAM……………………………………..11

BLOCK DIAGRAMS.................................................. 12

PARTS LOCATION................................................... 15

REPLACEMENT PARTS LIST.................................. 17

SCHEMATIC DIAGRAMS ......................................... 29

A-BOARD (1 OF 5) SCHEMATIC DIAGRAM ...... 30

A-BOARD (2 OF 5) SCHEMATIC DIAGRAM ...... 31

A-BOARD (3 OF 5) SCHEMATIC DIAGRAM ...... 32

A-BOARD (4 OF 5) SCHEMATIC DIAGRAM ...... 33

A-BOARD (5 OF 5) SCHEMATIC DIAGRAM ...... 34

B-BOARD SCHEMATIC DIAGRAM .................... 35

H-BOARD SCHEMATIC DIAGRAM .................... 36

P-BOARD SCHEMATIC DIAGRAM .................... 37

K-BOARD SCHEMATIC DIAGRAM .................... 38

V-BOARD SCHEMATIC DIAGRAM .................... 39

CONDUCTOR VIEWS .............................................. 40

Safety Precautions

General Guide Lines

1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated

or damaged by the short circuit.

2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly

installed.

3. After servicing, make the following touch current checks to prevent the customer from being exposed to shock hazards.

4. Always ensure panel TKP0E16001 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 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.

Fig. 2

Fig. 1

APPLIANCES

EXPOSED

METAL PARTS

Resistance values in ohms (:)

R0=500:

RS=1500:CS=0.22PF

10k:

0.022PF

COLD

WATER PIPE

(EARTH GROUND)

V: Voltmetr or oscilloscope

(r.m.s. or peak reading)

Measuring network for TOUCH CURRENTS

Input resistance: t1M:

Input capacitance:d200pF

Frequency range: 15Hz to 1MHz and d.c.respectively

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

U2(V)

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 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).

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)

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

xPb 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).

xPb 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.

xAfter 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 Hints

How to remove the Pedestal assembly

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

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

How to remove the backcover

Remove the 16 [14] fixing screws. (see Fig.7)

Fig.5

Fig.6

SCREWS

Fig.7

SCREWS

Chassis Board Layout

Location of Lead Wiring

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

Board Name Function

A-Board Main Board

B-Board Tuner

H-Board AV3 Terminal

Key Control Key Control

K-Board Mains Input, Power Switch

P-Board Power Supply

V-Board Remote Receiver, LED IR, Bats

P-BOARD

V-BOARD

K-BOARD

A-BOARD

B-BOARD

KEY CONTROL

H-BOARD

A13

–

A10

–

PAN

–

PAN K3

–

TU001

–

A12

–

A5 A6

CN1

A12

–

[26´´]

–

[26´´]

Setting Inspection

Voltage Confirmation

Confirm the following voltages:

A board Normal mode

Test point Position Voltage Description

TP3800 Connector A7, pin 20 13,8V r0,7V STBY12V

TP3806 Connector A7, pin 8 23,9Vr0,5V SIGNAL24V

TP3810 Connector A7, pin 12 23,9V r0,5V AUD24V

TP3811 Q3800, +pin 3,3V r0,3V 3.3V_HDMI

TP3802 5,05V r0,25V 5V

TP3812 D38002, -pin 8,2r0,5V 8V

TP3801 IC3801, pin1 9V r0,9V 9V

TP3805 13,8V r0,7V 12V

TP3815 D3819, -pin 30V r2V 30V

Standby mode

TP3813 C3801, pin 5V r0,5V STBY5V

TP3804 C3808, + pin 3,3V r0,2V STBY3.3V

TP3803 C3818, +pin 1,8r0,1V STBY1.8V

P board

Normal mode

TP833 Connector P2, pin 8 23,9V r0,5V SIGNAL24V

TP830 Connector P2, pin 9 24,2V r0,5V AUD24V

TP832 Connector P2, pin 20 13,8V r0,7V STBY12V

TP830 Connector P2, pin 12 23,9V r0,5V AUD24V

Standby mode

TP002 Connector P2, pin 8 24,2Vr0,5V SIGNAL24V

TP003 Connector P2, pin 9 10V AUD24V

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 STATUS button on the remote control and press the down (-/v) button on the TV set. To exit Self Check,

switch off the TV set at the power button.

E2CRC 56

OPTION 1 0F

OPTION 2 00

OPTION 3 B9

OPTION 4 11

OPTION 5 00

OPTION 6 45

OPTION 7 FD

OPTION 8 D8

OPTION 9 00

OPTION 10 00

OPTION 11 13

OPTION 12 20

OPTION 13 1C

CHECK 42

E2 O.K.

VCTP O.K.

AVSW O.K.

TUN O.K.

HDMI O.K.

Chassis 21

Model 09

Size 32

VCTP B3

TX-32LE7FA

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

E2 IC1120 EAROM A-Board

VCTP IC1501 AUDIO VIDEO TEXT PROCESSOR A-Board

AVSW IC1501 AV SWITCH A-Board

TUN TU001 TUNER B-Board

HDMI IC1503 HDMI A-Board

If the CCU

orts have been checked and found to be incorrect or not located then " - - " will a

ear in

lace of "O.K.".

E2CRC CC

OPTION 1 0D

OPTION 2 00

OPTION 3 39

OPTION 4 10

OPTION 5 00

OPTION 6 45

OPTION 7 3C

OPTION 8 58

OPTION 9 00

OPTION 10 40

OPTION 11 13

OPTION 12 28

OPTION 13 0C

CHECK B6

E2 O.K.

VCTP O.K.

AVSW O.K.

TUN O.K.

HDMI O.K.

Chassis 21

Model 12

Size 32

VCTP B3

Self Check Com

lete

Panasonic 2007LCD

TX-32LE7LA

E2CRC 5F

OPTION 1 0F

OPTION 2 00

OPTION 3 B9

OPTION 4 11

OPTION 5 00

OPTION 6 45

OPTION 7 FD

OPTION 8 58

OPTION 9 00

OPTION 10 00

OPTION 11 13

OPTION 12 20

OPTION 13 1C

CHECK C2

E2 O.K.

VCTP O.K.

AVSW O.K.

TUN O.K.

HDMI O.K.

Chassis 21

Model 10

Size 32

VCTP B3

Self Check Com

lete

Panasonic 2007LCD

TX-32LE7PA

E2CRC 3E

OPTION 1 0F

OPTION 2 00

OPTION 3 B9

OPTION 4 11

OPTION 5 00

OPTION 6 45

OPTION 7 FD

OPTION 8 58

OPTION 9 00

OPTION 10 00

OPTION 11 13

OPTION 12 40

OPTION 13 1C

CHECK E2

E2 O.K.

VCTP O.K.

AVSW O.K.

TUN O.K.

HDMI O.K.

Chassis 21

Model 13

Size 26

VCTP B3

Self Check Com

lete

Panasonic 2007LCD

TX-26LE7PA

E2CRC AD

OPTION 1 0D

OPTION 2 00

OPTION 3 39

OPTION 4 10

OPTION 5 00

OPTION 6 45

OPTION 7 3C

OPTION 8 58

OPTION 9 00

OPTION 10 40

OPTION 11 13

OPTION 12 48

OPTION 13 0C

CHECK D6

E2 O.K.

VCTP O.K.

AVSW O.K.

TUN O.K.

HDMI O.K.

Chassis 21

Model 08

Size 26

VCTP B3

Self Check Com

lete

Panasonic 2007LCD

TX-26LE70LA

E2CRC 3D

OPTION 1 0F

OPTION 2 00

OPTION 3 B9

OPTION 4 11

OPTION 5 00

OPTION 6 45

OPTION 7 FD

OPTION 8 D8

OPTION 9 00

OPTION 10 00

OPTION 11 13

OPTION 12 40

OPTION 13 1C

CHECK 62

E2 O.K.

VCTP O.K.

AVSW O.K.

TUN O.K.

HDMI O.K.

Chassis 21

Model 14

Size 26

VCTP B3

Self Check Com

lete

Panasonic 2007LCD

SW V1.12

E2 V02

SW V1.12

E2 V02

TV V1.12

E2 V02

TV V1.12

E2 V02

TV V1.12

E2 V02

TX-26LE7FA

Self Check Com

lete

SW V1.12

E2 V02

Panasonic 2007LCD

E2CRC 31

OPTION 1 0F

OPTION 2 00

OPTION 3 B9

OPTION 4 11

OPTION 5 00

OPTION 6 45

OPTION 7 FD

OPTION 8 58

OPTION 9 00

OPTION 10 00

OPTION 11 13

OPTION 12 20

OPTION 13 1C

CHECK C2

E2 O.K.

VCTP O.K.

AVSW O.K.

TUN O.K.

HDMI O.K.

Chassis 21

Model 19

Size 32

VCTP B3

Self Check Com

lete

Panasonic 2007LCD

TX-R32LE7A

E2CRC 16

OPTION 1 0F

OPTION 2 00

OPTION 3 B9

OPTION 4 11

OPTION 5 00

OPTION 6 45

OPTION 7 FD

OPTION 8 58

OPTION 9 00

OPTION 10 00

OPTION 11 13

OPTION 12 40

OPTION 13 1C

CHECK E2

E2 O.K.

VCTP O.K.

AVSW O.K.

TUN O.K.

HDMI O.K.

Chassis 21

Model 20

Size 26

VCTP B3

Self Check Com

lete

Panasonic 2007LCD

TV V1.12

E2 V02

TV V1.12

E2 V02

TX-R26LE7A

Adjustment Method

How to enter Service 1

xSet the Bass to maximum position, set the Treble to minimum position then keep pressing the INDEX button on the

remote control and press the down button (-/v) on the TV set, this will place the TV set into the Service Mode 1.

Key Command

xPress the RED / GREEN buttons to step up / down through the functions.

xPress the YELLOW / BLUE buttons to alter the function values, to alter White Rasters use +/-buttons

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

xTo exit the Service Mode, press the "N" button.

Keep adjusting sequence: DVCO, Sub-Contrast, other items.

Item Setting indication

Note: All setting values are approximate Settings / Special features

Sub-Contrast Sub-Contrast

Receive a 80% white level Philips Pattern with correct

sound system (B/G, D/K) via aerial input. For Sub-

Contrast alignment press "Blue" button, wait until the

figure colour is changed from red to black colour.

Press the OK.

DVCO DVCO

Receive a 80% white level Philips Pattern via aerial

input. For DVCO alignment press "Blue" button, wait

until the figure colour is changed from red to black

colour. Press the OK.

Highlight

Lowlight For correct setting see White Balance Adjustment

Sub-Brightness Sub-Brightness

0Optimum setting.

White Balance Adjustment

Instrument

xRemote Control

xLCD WB meter (Minolta CA-210 or equivalent)

Condition

xSwitch on the TV Set. Enter Service1. Step down to Highlight line and keep the aging time more than 20 minutes.

Procedure

xAfter aging time above set White Raster No.12 for Highlight and No.4 for Lowlight Press the OK button

to store.

xPut Minolta Sensor to the center of the LCD Panel with 25mm gap between Minolta Sensor and LCD Panel. Adjust "x"

and "y" values by changing Red and Blue values.

xPress OK button to store setting.

High 12 0410 0410 0410

Low 40064 0064 0064

High 12

Low 4

Item Value

x2850r150

Highlight y2940r150

x2860r150

Lowlight y2900r150

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