Panasonic TX-17LA1M Bedienungsanleitung

Power Source

AC 100~240V, 50/60Hz

Power Consumption

Average use: 56W (17inch model)

60W (20inch model)

Stand-by condition: 1.8W

TV set DC 15V, 3.2 A max. (17inch model)

TV set DC 15V, 3.4 A max. (20inch model)

LCD

17inch (432mm) (17inch model)

20inch (510mm) (20inch model)

4:3 aspect ratio LCD panel (640 × 480 pixel)

Screen Size

343.7mm(W) x 261.6mm(H) (17inch model)

408.0mm(W) x 306.0mm(H) (20inch model)

Sound

Speaker

Ø4cm, 2pcs, 169

Audio Output

6.0W (3.0W+3.0W), 10%THD

Headphones

M3(3.5 mm) Jack x 1

rights reserved. Unauthorized copying and

distribution is a violation of law.

TX-17LA1M

TX-17LA1Q

TX-17LA1Z

TX-17LA1X

TX-17LA1T

TC-17LA1H

TX-20LA1M

TX-20LA1Q

TX-20LA1Z

TX-20LA1X

TX-20LA1T

TC-20LA1H

LH11 Chassis

Receiving Systems/ Band name

Receiving Channels

Regular TV

VHF-BAND

2-12 (PAL/SECAM B, K1)

0-12 (PAL B AUST.)

1-9 (PAL B N. Z)

1-12 (PAL/SECAM D)

1-12 (NTSC M Japan)

LCD TV

ORDER NO. ITD0311071C3

2-13 (NTSC M U.S.A)

UHF BAND

21-69 (PAL G, H, I/SECAM G, K, K1)

28-69 (PAL B AUST.)

13-57 (PAL D, K)

13-62 (NTSC M Japan)

14-69 (NTSC M U.S.A)

CATV

S1-S20 (OSCAR)

1-125 (U.S.A CATV)

C13-C49 (JAPAN)

S21-S41 (HYPER)

Z1-Z37 (CHINA)

5A, 9A (AUST.)

Aerial-Rear

UHF/VHF

Operating Conditions

Temperature: 5°C-40°C

Humidity: 5%-90% RH (non-condensing)

Connection terminals

AV1

VIDEO (RCA Pin Type)

1.0Vp-p (75 9)

S-VIDEO (MINI DIN 4-pin)

y:1.0Vp-p (75 9) C:0.286 Vp-p (75 9)

AUDIO L-R (RCA Pin Type × 2)

0.5 Vrms

AV2

VIDEO (RCA Pin Type)

1 Safety Precautions 4

1.1. General Guidelines 4

2 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices 5

3 About lead free solder (PbF) 6

4SelfCheck 7

5 SERVICE HINTS 7

5.1. Hotel Mode 7

6 Chassis Board Layout 8

7 Before servicing 9

7.1. Kind and location of the flexible cable 9

7.2. How to remove the connector 10

8 Disassembly for Service 11

8.1. Hinge cover and AV cable cover 11

8.2. Rear cover and Tilt base 11

8.3. AV terminal cover, EP jack cover, and Tuner cover 12

1.0 Vp-p (75 9)

UDIO L-R (RCA Pin Type × 2)

0.5Vrms

1.0 Vp-p (including ynchronization)

PB/PR

±0.35Vp-p

IDEO (RCA PinType)

1.0 Vp-p (75 9)

UDIO L-R (RCA Pin Type × 2)

0.5 Vrms

MONITOR OUT

IDEO (RCA Pin Type)

1.0Vp-p (759)

UDIO L-R (RCA Pin Type×2)

0.5Vrms

Dimensions (W x D x H)

Including TV Stand

424mm x 415mm x 215mm (17inch model)

494mm x 461mm x 255mm (20inch model)

TV Set Only

424mm x 382mm x 64mm (17inch model)

494mm x 422mm x 82mm (20inch model)

Weight (Mass)

5.4kg Net (17inch model)

7.4kg Net (20inch model)

Note:

Design and Specifications are subject to change without notice.

Weight and Dimensions shown are approximate.

8.4. Shield plate 12

8.5. Inverter shield and Lock hinge (20inch model) 13

8.6. B-Board and K-Board 14

8.7. BL-Board, DG-Board and A-Board 14

8.8. V-Board 15

8.9. Speaker 15

8.10. LCD panel 16

9 Service Mode Function 17

9.1. How to enter SERVICE 1 17

9.2. How to enter SERVICE 2 17

9.3. Option Description 19

9.4. Option Code Setting (17 inch model) 21

9.5. Option Code Setting (20 inch model) 22

10 Conductor Views 23

10.1. A-Board 23

10.2. DG-Board (17inch model) 25

CONTENTS Page Page

TX-17LA1M

10.3. DG-Board (20inch model) 30

10.4. B, BL, K and V-Board 34

11 Block and Schematic Diagram 37

11.1. Schematic Diagram Notes 37

11.2. Power Block Diagram 38

11.3. Signal Block Diagram 40

11.4. A-Board (1 of 4) and B-Board Schematic Diagram 42

11.5. A-Board (2 of 4) Schematic Diagram 43

11.6. A-Board (3 of 4) and V-Board Schematic Diagram 44

11.7. A-Board (4 of 4) Schematic Diagram, BL-Board, and K-

Board Schematic Diagram 45

11.8. DG-Board (1 of 6) Schematic Diagram (For 17inch model)

11.9. DG-Board (2 of 6) Schematic Diagram (For 17inch model)

11.10. DG-Board (3 of 6) Schematic Diagram (For 17inch model)

11.11. DG-Board (4 of 6) Schematic Diagram (For 17inch model)

11.12. DG-Board (5 of 6) Schematic Diagram (For 17inch model)

11.13. DG-Board (6 of 6) Schematic Diagram (For 17inch model)

11.14. DG-Board (1 of 5) Schematic Diagram (For 20inch model)

11.15. DG-Board (2 of 5) Schematic Diagram (For 20inch model)

11.16. DG-Board (3 of 5) Schematic Diagram (For 20inch model)

11.17. DG-Board (4 of 5) Schematic Diagram (For 20inch model)

11.18. DG-Board (5 of 5) Schematic Diagram (For TX-20LA1) 56

12 Parts Location & Mechanical Replacement Parts List 57

12.1. Parts Location (1) 57

12.2. Parts Location (2) 58

12.3. Parts Location (3) 59

12.4. Mechanical Replacement Parts List 60

13 Replacement Parts List 61

13.1. Replacement Parts List Notes 61

13.2. Electrical Replacement Parts List 62

TX-17LA1M

1.1.1. Leakage Current Cold Check

1.Unplug the AC cord and connect a jumper between the two

prongs on the plug.

2.Measure the resistance value, with an ohmmeter, between

the jumpered AC plug and each exposed metallic cabinet

part on the equipment such as screwheads, connectors,

control shafts, etc. When the exposed metallic part has a

return path to the chassis, the reading should be between

1M9and 5.2M9.

When the exposed metal does not have a return path to

the chassis, the reading must be .

Figure 1

1.1.2. Leakage Current Hot Check (See

Figure 1.)

1.Plug the AC cord directly into the AC outlet. Do not use an

isolation transformer for this check.

2.Connect a 1.5k9, 10 watts resistor, in parallel with a 0.15µF

capacitors, between each exposed metallic part on the set

and a good earth ground such as a water pipe, as shown in

Figure 1.

3.Use an AC voltmeter, with 1000 ohms/volt or more

sensitivity, to measure the potential across the resistor.

4.Check each exposed metallic part, and measure the

voltage at each point.

5.Reverse the AC plug in the AC outlet and repeat each of the

above measurements.

6.The potential at any point should not exceed 0.75 volts

RMS. A leakage current tester (Simpson Model 229 or

equivalent) may be used to make the hot checks, leakage

current must not exceed 1/2 milliamp. In case a

measurement is outside 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.

1 Safety Precautions

1.1. General Guidelines

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

TX-17LA1M

2 Prevention of Electro Static 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 electro static 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 alminum

foil, to prevent electrostatic charge buildup 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, alminum 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 hamless 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).

TX-17LA1M

3 About lead free solder (PbF)

Note: Lead is listed as (Pb) in the periodic table of elements.

In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.

The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).

That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.

This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work, we’d

suggest the use of Pb free solder as well, although Pb solder may be used.

PCBs manufactured using lead free solder will have the PbF within a leaf Symbol stamped on the back of PCB.

Caution





·



Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40°C) higher.

Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).





·



Pb free solder will tend to splash when heated too high (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 figure below)

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.

TX-17LA1M

4SelfCheck

1.Self-Check is used to automatically check the bus lines and hexadecimal code of the TV set.

2.To get into the Self -Check mode press the [Down ( )] button on the customer controls at the front of the set, at the same

time pressing the [SET UP] button on the remote control, and the screen will show :

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

5 SERVICE HINTS

5.1. Hotel Mode

Purpose

1.At Hotels, this Mode prevent customer from changing the TV preset data, such as Channel preset data.

Note:

This Mode is useful for hotel, you should not get into “Hotel Mode” with Normal use.

Operation

1.To get into “ Hotel Mode”, press “Recall” button on the remote control and Channel up “[ ]” key on the TV set

simultaneously, after setting the “Off-Timer” mode.

2.In this mode, The Channel up and down Function will be able as normal Mode, and The maximum volume level for this

mode is set at the current volume level, that means setting at the level before entering the mode. However, other function

will be disable.

3.To exit This mode, press “SET UP” button on the remote control and the “Volume Down [ ]” key on the TV set

simultaneously.

* This Information is informed by Service Manual only.

TX-17LA1M

Board Name Function

A-Board Audio, Power, Inverter, AV SW

B-Board Tuner

BL-Board Inverter

DG-Board GC2, PCN, MICOM, EEPROM

K-Board Switch

V-Board Remote sensor, LED

6 Chassis Board Layout

TX-17LA1M

<17inch model> <20inch model>

7 Before servicing

7.1. Kind and location of the flexible cable

Ref No. Flexible cable Connector type Pins Location Opposite Ref No.

A6 ltype1 50 pin A-BOARD DG9001

A1 - - 15 pin A-BOARD B1

A2 - - 9pin A-BOARD B2

A7 - - 2pin A-BOARD Back Light (U)

A8 - - 2pin A-BOARD Back Light (U)

A3 - - 4pin A-BOARD K1

A5 ltype2 13 pin A-BOARD V1

A4 - - 11 pin A-BOARD BL1

B1 - - 15 pin B-BOARD A1

B2 - - 9pin B-BOARD A2

BL1 - - 11 pin BL-BOARD A4

BL4 - - 2pin BL-BOARD Back Light (D)

BL6 - - 2pin BL-BOARD Back Light (D)

DG9001 ltype3 50 pin DG-BOARD A6

DG6800 ltype3 50 pin DG-BOARD (20inch model only) LCD Panel

DG6501 ltype4 40 pin DG-BOARD (17inch model only) LCD Panel

DG6502 ltype4 40 pin DG-BOARD (17inch model only) LCD Panel

K1 - - 4pin K-BOARD A3

V2 - - 2pin V-BOARD Speaker (R)

V3 - - 2pin V-BOARD Speaker (L)

V1 ltype3 13 pin V-BOARD A5

TX-17LA1M

Connector type1

Connector type2

Connector type3

Connector type4

7.2. How to remove the connector

TX-17LA1M

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