Panasonic TC17LA2 - 17" LCD COLOR TV Manuel utilisateur

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TC-17LA2

TC-17LA2D

LH32 Chassis

LCD TV

Specifications

Power Source

C 120 V, 60 Hz

Power Consumption

verage use : 36 W

Stand-by condition : 0.6 W

Power off : 0.4 W

TV set DC : 15V, 3.6A max.

LCD 17-inch (432 mm), 4 : 3 aspect ratio LCD panel

Screen Size 13.53 " (343.7 mm) (W) × 10.30 " (261.6 mm) (H)

Channel Capability

HF-12 : UHF-56 : Cable-125

Sound

Speaker 9×5cm,2pcs,169

Audio Output 6W[3W+3W](10%THD)

Headphones M3 (3.5 mm) Jack × 1

FEATURES 3D Y/C Digital Comb Filter

CLOSED CAPTION

-Chip

Operating Conditions Temperature : 41 °F - 95 °F (5 °C - 35 °C)

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

Connection Terminals

INPUT

IDEO (RCA PIN Type × 1) × 2 1.0 Vp-p (75 9)

S-VIDEO (MINI DIN 4pin × 1) × 2 Y : 1.0 Vp-p (75 9), C : 0.286 Vp-p (75

UDIO L-R (RCA PIN Type × 2) × 2 0.5 Vrms

COMPONENT VIDEO INPUT Y×1 1.0 Vp-p (including synchronization)

PB/P

R×1 ±0.35Vp-p

UDIO L-R (RCA PIN Type × 2) × 1 0.5 Vrms

Dimensions ( W × H × D )

Including Stand (TC-17LA2) 17 21/64 “ (440 mm) × 17 63/64 “ (457 mm) × 10 15/64 “(260mm)

ORDER NO. ITD0405013C1

B05 Canada:B07

1 Safety Precautions 3

1.1. General Guidelines 3

2 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices 3

3 About lead free solder (PbF) 4

4 Self-check function 5

4.1. How to access 5

4.2. Screen display 5

5 Chassis Board Layout 6

6 Servicing method 7

6.1. Removing the base metal ass´y 7

6.2. Removing the rear cover 7

6.3. Removing the TA-Board 7

6.4. Removing the A-Board 8

6.5. Removing the DP-Board 8

6.6. Removing the BL-Board 8

6.7. Removing the R-Board 8

6.8. Removing the V-Board 9

6.9. Removing the speakers (left and right) 9

6.10. Removing the main chassis 9

6.11. Removing the DG-Board 10

6.12. Removing the LCD panel 10

7 Location of Lead Wiring 11

8 Adjustment method 12

8.1. How to enter into adjustment mode 12

8.2. Cancellation 12

8.3. Contents of adjustment mode 12

8.4. Video Signal Level Adjustment 13

8.5. LCD GAMMA Adjustment 13

8.6. LCD FLICKER Adjustment 14

8.7. MTS Adjustment 14

9 Conductor Views 17

9.1. A-Board 17

9.2. DG-Board 19

9.3. DP-Board 20

9.4. BL-Board 22

9.5. R, V and TA-Board 23

10 Block and Schematic Diagrams 25

10.1. Schematic Diagram Notes 25

10.2. Power Block Diagram 26

10.3. Signal Block Diagram 28

10.4. A-Board (1 of 6) Schematic Diagram 30

10.5. A-Board (2 of 6) Schematic Diagram 31

10.6. A-Board (3 of 6) Schematic Diagram 32

10.7. A-Board (4 of 6) Schematic Diagram 33

10.8. A-Board (5 of 6) Schematic Diagram 34

10.9. A-Board (6 of 6) Schematic Diagram 35

10.10. DG-Board (1 of 2) Schematic Diagram 36

10.11. DG-Board (2 of 2) Schematic Diagram 37

10.12. BL and DP-Board Schematic Diagram 38

10.13. R, TA, and V-Board Schematic Diagram 39

11 Parts Location & Mechanical Replacement Parts List 41

11.1. Parts Location 41

11.2. Packing Exploded View 42

11.3. Mechanical Replacement Parts List 43

12 Replacement Parts List 44

12.1. Replacement Parts List Notes 44

12.2. Electrical Replacement Parts List 45

(TC-17LA2D) 17 21/64 “ (440 mm) × 15 3/4 “ (400 mm) × 7 21/64 “ (186 mm)

TV Set Only 17 21/64 “ (440 mm × 15 25/32 “ (401 mm) × 3 35/64 “ (90 mm)

Mass (Weight) (TC-17LA2) 14.8 lb. (6.7 kg) Net

(TC-17LA2D) 12.6 lb. (5.7 kg) Net

Note:

Design and specifications are subject to change without notice. Weight and dimensions shown are approximate.

CONTENTS Page Page

TC-17LA2 / TC-17LA2D

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.

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).

TC-17LA2 / TC-17LA2D

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.

TC-17LA2 / TC-17LA2D

4 Self-check function

When phenomena like "the power fails from time to time" or "the video/audio fails from time to time" can not be confirmed at the

time of servicing, the self-check function can be used to confirm the occurrence and to limit the scope for the defective circuits.Also,

when "the power fails from time to time", display on the screen can be used to confirm the occurrence and to limit the scope for

the defective circuits.

Any programmed channels, channels caption data and some other user defined settings will be erased and return to factory setting.

4.1. How to access

4.1.1. Access

Produce TV reception screen and, while pressing [VOLUME- ] button on the main unit, press [SLEEP] button on the remote

control simultaneously.

4.1.2. Exit

When one of the buttons for channel selection etc. is pressed, the display returns to the normal screen.

4.2. Screen display

Display Ref No. Description P.C.B

TNR TU001 Tuner 1 TA-Board

AVSW IC3001 AV Switch A-Board

MTS IC2201 Multi Sound Processor TA-Board

GLP IC4014 LCD Processor A-Board

GC3 IC4012 Global Core A-Board

MEMORY IC1002 EEPROM A-Board

LTP IC6402 LTP Control DG-Board

TC-17LA2 / TC-17LA2D

5 Chassis Board Layout

Board Name Function

A-Board Main (AV Switch, Audio, MCU, Grobal Core, AV connector )

R-Board Remote Reciever, LED Drive

V-Board Headphone, Speaker Terminals

TA-Board Tuner, MTS

DP-Board Power (AC/DC), Switch

Back Light Inverter, Feed Back Control

DG-Board LTP Control, R/G/B-Drive, Switching Power Control

BL-Board DC In, Back Light Drive, Back Light Feed Back

TC-17LA2 / TC-17LA2D

6.1. Removing the base metal

ass´y

1.Lay down the main unit so that the rear cover faces upward.

2.Remove the fixing screws (4pcs).

3.Remove the base metal ass´y.

6.2. Removing the rear cover

1.Remove the base metal ass´y. (See 6.1.)

2.Remove the fixing screws (8pcs and 3pcs).

3.Remove the rear cover.

6.3. Removing the TA-Board

1.Remove the rear cover. (See 6.2.)

2.Remove the fixing screw (1pcs).

3.Disconnect the connectors (TA-A1, TA2-A2) to remove the

TA-Board.

6 Servicing method

TC-17LA2 / TC-17LA2D

6.4. Removing the A-Board

1.Remove the rear cover. (See 6.2.)

2.Disconnect the couplers (A5, A8, A9) and a flexible cable

(A15).

3.Remove the fixing screws (7pcs).

4.Remove the TA-Board supporter and the A-Board with the

TA-Board.

6.5. Removing the DP-Board

1.Remove the rear cover. (See 6.2.)

2.Remove the fixing screws (3pcs ) and remove the BL

cable cover R.

3.Disconnect the couplers (DP1, DP2, DP3, DP4, DP8, A9).

4.Remove the fixing screws (9pcs ).

5.Remove the DP-Board.

6.6. Removing the BL-Board

1.Remove the rear cover. (See 6.2.)

2.Remove the fixing screws (3pcs ) and remove the BL

cable cover L.

3.Disconnect the couplers (BL1, BL2, BL3, BL4), remove the

screws (3pcs ) and remove the BL-Board.

6.7. Removing the R-Board

1.Remove the rear cover. (See 6.2.)

2.Remove the fixing screws (4pcs).

3.Remove the fixing metal.

4.Disconnect the coupler (R1).

5.Remove the R-Board.

TC-17LA2 / TC-17LA2D

6.8. Removing the V-Board

1.Remove the rear cover. (See 6.2.)

2.Remove the fixing screw (1pcs ) to release a GND cable.

3.Remove a fixing screw (1pcs ).

4.Remove the V-Board.

5.Disconnect the couplers (V1 and V2).

6.9. Removing the speakers (left

and right)

1.Remove the rear cover. (See 6.2.)

2.Remove the fixing screws (8pcs).

3.Remove the speakers (left and right).

6.10. Removing the main chassis

1.Remove the rear cover. (See 6.2.)

2.Disconnect the couplers (A5, A8, A9) and a flexible cable

(A15).

3.Remove the A-Board with the TA-Board and TA-Board

supporter. (See 6.4.)

4.Remove the BL cable cover R, remove the couplers (DP1,

DP2) and release the cables from the clampers. (See 6.5.)

5.Remove the BL cable cover L, remove the couplers (BL1,

BL2) and release the cables from the clampers. (See 6.6.)

6.Remove the fixing screw (2pcs ) and remove the button

cover.

7.Remove the fixing screws (3pcs ).

8.Release the cables (A5-R1/V1, V2-speakers) from the

clampers.

9.Remove the fixing screws (2pcs )

10.Remove the main chassis with the DP-Board and the BL

Board.

TC-17LA2 / TC-17LA2D

6.11. Removing the DG-Board

1.Remove the rear cover. (See 6.2.)

2.Remove the main chassis. (See 6.10.)

3.Disconnect the flexible cable (DG1, DG2).

4.Remove the screws (2pcs ) and remove the DG-Board

with the Bracket.

5.Remove the fixing screws (4pcs ) and remove the DG-

Board.

6.12. Removing the LCD panel

1.Remove the main chassis. (See 6.10.)

2.Remove the DG-Board with the bracket. (See 6.11.)

3.Remove the fixing screws (2pcs).

4.Remove the LCD panel.

TC-17LA2 / TC-17LA2D

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