Sharp LC32DV24U - 31.5" LCD TV Manual de usuario

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored

to its original condition and only parts identical to those specified should be used.

MODEL

This document has been published to be used for

after sales service only.

The contents are subject to change without notice.

COMBINATION LIQUID CRYSTAL

TELEVISION AND DVD/CD PLAYER

CONTENTS

S68ONLC32DV24

CAUTION .............................................................................................................................

IMPORTANT SAFEGUARDS ..............................................................................................

WHEN REPLACING DVD DECK.........................................................................................

DISC REMOVAL METHOD AT NO POWER SUPPLY........................................................

PARENTAL CONTROL-RATING.........................................................................................

ABOUT LEAD FREE SOLDER (PbF) ..................................................................................

GENERAL SPECIFICATIONS .............................................................................................

DISASSEMBLY INSTRUCTIONS........................................................................................

SERVICE MODE LIST .........................................................................................................

SERVICING FIXTURES AND TOOLS.................................................................................

RE-WRITE FOR DVD FIRMWARE......................................................................................

WHEN REPLACING EEPROM (MEMORY) IC....................................................................

ELECTRICAL ADJUSTMENTS ...........................................................................................

TROUBLESHOOTING GUIDE.............................................................................................

BLOCK DIAGRAM ...............................................................................................................

PRINTED CIRCUIT BOARDS..............................................................................................

SCHEMATIC DIAGRAMS....................................................................................................

WAVEFORMS......................................................................................................................

MECHANICAL EXPLODED VIEWS ....................................................................................

DVD DECK EXPLODED VIEWS .........................................................................................

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

Page

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A1-2~A1-4

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A1-7

A2-1~A2-7

B1-1~B3-2

C-1

C-2

C-3

D-1~D-6

E-1~E-9

F-1~F-8

G-1~G-10

H-1~H-52

I-1, I-2

J1-1~J1-4

J2-1

K1-1~K3-8

•

LC-32DV24U

SERVICE MANUAL

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with

specified ones for maintaining the safety and performance of the set.

SHARP CORPORATION

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A1-1

CAUTION

THIS

LCD COLOR TELEVISION

EMPLOYS A LASER SYSTEM.

TO ENSURE PROPER USE OF THIS PRODUCT, PLEASE READ THIS SERVICE MANUAL CARE-

FULLY AND RETAIN FOR FUTURE REFERENCE. SHOULD THE UNIT REQUIRE MAINTENANCE,

CONTACT AN AUTHORIZED SERVICE LOCATION-SEE SERVICE PROCEDURE.

USE OF CONTROLS, ADJUSTMENTS OR THE PERFORMANCE OF PROCEDURES OTHER THAN

THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS LASER RADIATION EXPOSURE.

TO PREVENT DIRECT EXPOSURE TO LASER BEAM, DO NOT TRY TO OPEN THE ENCLOSURE.

VISIBLE LASER RADIATION MAY BE PRESENT WHEN THE ENCLOSURE IS OPENED. DO NOT

STARE INTO BEAM.

The laser diode used for a pickup head may be destroyed with external static electricity.

Moreover, even if it is operating normally after repair, when static electricity discharge is received at the

time of repair, the life of the product may be shortened.

Please perform the following measure against static electricity, be careful of destruction of a laser diode

at the time of repair.

• Place the unit on a workstation equipped to protect against static electricity, such as conductive mat.

• Soldering iron with ground wire or ceramic type is used.

• A worker needs to use a ground conductive wrist strap for body.

Location of the required Marking

The rating sheet and the safety caution are on the rear of the unit.

CERTIFICATION: COMPLIES WITH FDA

RADIATION PERFORMANCE STANDARDS,

21 CFR SUBCHAPTER J.

PREPARATION OF SERVICING

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A1-2

IMPORTANT SAFEGUARDS

1) Read these instructions.

2) Keep these instructions.

3) Heed all warnings.

4) Follow all instructions.

5) Do not use this apparatus near water.

6) Clean only with dry cloth.

7) Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.

8) Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including

amplifiers) that produce heat.

9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades

with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide

blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet,

consult an electrician for replacement of the obsolete outlet.

10) Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and

the point where they exit from the apparatus.

11) Only use attachments/accessories specified by the manufacturer.

12) Use only with the cart, stand, tripod, bracket, or table specified by the

manufacturer, or sold with the apparatus. When a cart is used, use caution when

moving the cart/apparatus combination to avoid injury from tip-over.

13) Unplug this apparatus during lightning storms or when unused for long periods

of time.

14) Refer all servicing to qualified service personnel. Servicing is required when the

apparatus has been damaged in any way, such as power-supply cord or plug is

damaged, liquid has been spilled or objects have fallen into the apparatus, the

apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

15) Apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such a vases,

shall be placed on the apparatus.

16) An outside antenna system should not be located in the vicinity of overhead power lines or other electric

light or power circuits, or where it can fall into such power lines or circuits. When installing an outside

antenna system, extreme care should be taken to keep from touching such power lines or circuits, as

contact with them might be fatal.

17) Do not overload wall outlets and extension cords, as this can result in a risk of fire or electric shock.

18) Do not push objects through any openings in this unit, as they may touch dangerous voltage points or short

out parts that could result in fire or electric shock. Never spill or spray any type of liquid into the unit.

S3126A

PORTABLECARTWARNING

(symbol provided by RETAC)

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A1-3

IMPORTANT SAFEGUARDS (CONTINUED)

EXAMPLE OF ANTENNA GROUNDING AS PERTHE

NATIONAL ELECTRICAL CODE

ANTENNA

DISCHARGE UNIT

(NEC SECTION 810-20)

ANTENNA

LEAD IN WIRE

GROUNDING CONDUCTORS

(NEC SECTION 810-21)

GROUND CLAMPS

POWER SERVICE GROUNDING

ELECTRODE SYSTEM

(NEC ART 250, PART H)

GROUND

CLAMP

ELECTRIC SERVICE

EQUIPMENT

NEC-NATIONAL ELECTRICAL CODE

S2898A

19) If an outside antenna or cable system is connected to the unit, be sure the antenna or cable system is

grounded to provide some protection against voltage surges and built-up static charges, Section 810 of

the National Electrical Code, ANSI/NFPA 70, provides information with respect to proper grounding of the

mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of ground-

ing conductors, location of antenna discharge unit, connection to grounding electrodes, and requirements

for the grounding electrode.

20) When replacement parts are required, be sure the service technician uses replacement parts specified by

the manufacturer or those that have the same characteristics as the original part.

Unauthorized substitutions may result in fire, electric shock or other hazards.

21) Upon completion of any service or repairs to this unit, ask the service technician to perform safety checks

to determine that the unit is in proper operating condition.

22) Keep your fingers clear of the disc slot as it is closing. It may cause injury.

23) When you connect the product to other equipment, turn off the power and unplug all of the equipment

from the wall outlet. Failure to do so may cause an electric shock and serious personal injury. Read the

owner's manual of the other equipment carefully and follow the instructions when making any connec-

tions.

24) Reduce the volume to the minimum level before you turn on the product. Otherwise, sudden high volume

sound may cause hearing or speaker damage.

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A1-4

HOWTO HANDLETHE LCD PANEL

• Do not press hard or jolt the LCD panel. It may cause the LCD panel glass to break and injury may occur.

• If the LCD panel is broken, make absolutely sure that you do not touch the liquid in the panel.This may

cause skin inflammation.

If the liquid gets in your mouth, immediately gargle and consult with your doctor. Also, if the liquid gets in

your eyes or touches your skin, consult with your doctor after rinsing for at least 15 minutes or longer in clean

water.

CONDENSATION

Moisture will form in the operating section of the player if the player is brought from cool surroundings into a

warm room or if the temperature of the room rises suddenly.When this happens, player's performance will

be impaired.

To prevent this, let the player stand in its new surroundings for about an hour before switching it on, or

make sure that the room temperature rises gradually.

Condensation may also form during the summer if the player is exposed to the breeze from an air condi-

tioner. In such cases, change the location of the player.

25) Do not allow the product to output distorted sound for an extended period of time. It may cause speaker

overheating and fire.

26) When you use the headphones, keep the volume at a moderate level. If you use the headphones continu-

ously with high volume sound, it may cause hearing damage.

27) Do not look into the opening of the disc slot or ventilation opening of the product to see the source of the

laser beam. It may cause eye damage.

28) Do not use a cracked, deformed, or repaired disc. These discs are easily broken and may cause serious

personal injury and product malfunction.

29) This reminder is provided to call the cable TV system installer's attention to Article 820-40 of the NEC that

provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be con-

nected to the grounding system of the building, as close to the point of cable entry as practical.

IMPORTANT SAFEGUARDS (CONTINUED)

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A1-5

Before removing Pick Up PCB and DVD MT PCB connector, the short circuit the position shown in Fig.

1using a soldering iron. If you remove the DVD Deck with no soldering, the Laser may be damaged.

WHEN REPLACING DVD DECK

[ When removing the DVD Deck ]

[ When installing the DVD Deck ]

Remove all the soldering on the short circuit position after the connection of Pick Up PCB and DVD

MT PCB connector.

NOTE

Fig. 1

Before your operation, please read “PREPARATION OF SERVICING”.

Use the Lead Free solder.

Manual soldering conditions

• Soldering temperature: 320 ± 20oC

• Soldering time: Within 3 seconds

• Soldering combination: Sn-3.0Ag-0.5Cu

When Soldering/Removing of solder, use the draw in equipment over the Pick Up Unit to keep the

Flux smoke away from it.

•

Short circuit using a

soldering iron.

Pick Up PCB

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A1-6

Remove the Back Cabinet and Angle Deck. (Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.)

Slide the Belt Loading toward the arrow direction by hand to release the lock. (Refer to Fig. 1)

Take out the Disc from the DVD Deck. Be careful not to scratch on the Disc.

DISC REMOVAL METHOD AT NO POWER SUPPLY

Fig. 1

DVD Deck

Belt Loading

If the stored 4 digit password in the Rating Level menu needs to be cancelled, please follow the steps below.

Turn Unit ON.

Set the DVD to the Stop Mode.

Check that “No disc” is displayed on the screen.

Press and hold the “STOP” button on the top panel.

Simultaneously press and hold the “7” key on the remote control unit.

Hold both keys for more than 2 seconds.

The On Screen Display message “PASSWORD CLEAR” will appear.

The 4 digit password has now been cleared.

PARENTAL CONTROL - RATING LEVEL

4 DIGIT PASSWORD CANCELLATION

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PCBs (manufactured) using lead free solder will have a PbF printing on the PCB.

(Please refer to figures.)

Caution:

Pb free solder has a higher melting point than standard solder;

Typically the melting point is 86°F~104°F(30°C~40°C) higher.

Please use a soldering iron with temperature control and adjust it to 650°F ± 20°F (350°C ± 10°C).

In case of using high temperature soldering iron, please be careful not to heat too long.

Pb free solder will tend to splash when heated too high (about 1100°F/ 600°C).

All products with the printed circuit board with PbF printing must be serviced with lead free solder.

When soldering or unsoldering, completely remove all of the solder from the pins or solder area,

and be sure to heat the soldering points with the lead free solder until it melts sufficiently.

Distinction of PbF PCB:

Recommendations

Recommended lead free solder composition is Sn-3.0Ag-0.5Cu.

ABOUT LEAD FREE SOLDER (PbF)

•

A1-7

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GENERAL SPECIFICATIONS

G-1 TV LCD LCD Size / Visual Size 31.5 inch / 800.4mmV

System LCD Type Color TFT LCD

Number of Pixels 1366(H) x 768(V)

View Range Left/Right 88/88 degree

Up/Down 88/88 degree

Bright Dot n=2

Zero Bright Dot Ratio --

Color System NTSC

Speaker 2 Speaker

Position Front

Size 1.6 x 4.8 inch

Impedance 8 ohm

Sound Output Max 5.0W + 5.0W

10%(Typical) ---

G-2 DVD System Color System NTSC

Disc DVD, CD-DA, CD-R/RW

DVD-R/RW (Video Format Only)

Disc Diameter 120 mm , 80 mm

Drive DSM-2

Search speed Fwd 4 step

Actual 2-45 times (DVD)

4-40 times (CD)

Rev 4 step

Actual 2-45 times (DVD)

4-40 times (CD)

Slow speed Fwd 1/7 -1/2 times

Actual --

Rev 1/7 -1/2 times

Actual --

G-3 Tuning Broadcasting System Analog US System M

System Digital ATSC(8VSB)/QAM

Tuner and System 1Tuner

Receive CH Destination US (W/CABLE)

CH Coverage 2~69, 4A, A-5~A-1, A~I, J~W, W+1~W+84

Intermediate

Digital 44.00MHz

Frequency Analog Picture(FP) 45.75MHz

Sound(FS) 41.25MHz

FP-FS 4.50MHz

Preset CH No

Stereo/Dual TV Sound US-Stereo

Tuner Sound Muting Yes

G-4 Signal Video Signal Input Level 1 V p-p/75 ohm

Output Level --

S/N Ratio (Weighted) --

Horizontal Resolution at DVD Mode --

RGB Signal Output Level --

Audio Signal Input Level 0.85 V p-p/50k ohm

Output Level at DVD 0.56 V p-p/ 1k ohm (-20dBFs, 0dBFs=5.6 V p-p)

at TV 0-1.7 V p-p/1k ohm

Digital Output Level 0.5 V p-p/75 ohm

S/N Ratio at DVD (Weighted) 85dB

Harmonic Distortion 0.02% (1KHz)

Frequency Response : at DVD 4 Hz - 44 KHz (96KHz)

at Video CD --

at SVCD --

at CD 4 Hz - 20 KHz

A2-1

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GENERAL SPECIFICATIONS

G-5 Power Power Source AC 120V, 60Hz

DC --

Power Consumption at AC 170W at 120V 60Hz

at DC --

Stand by (at AC) 0.8W at 120V 60Hz

Energy Star Yes

Per Year -- kWh/Year

Protector Power Fuse Yes

Safety Circuit Yes

IC Protector(Micro Fuse) Yes

G-6 Regulation Safety UL(UL6500_2nd)/CSA(E60065_00)

Radiation FCC / IC

Laser DHHS

G-7 Temperature Operation

C ~ +40

Storage

-20

C ~ +60

Space Around Unit 100 mm(4inch)

G-8 Operating Humidity Less than 80% RH

G-9 Clock and Clock No

Timer Sleep Timer Max Time 120 Min

On Timer Program No

Off Timer Program No

Game Timer No

Wake Up Timer No

Timer Back-up (at Power Off Mode) more than -- Min Sec

A2-2

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