Sharp LC-13E1E, LC-15E1E Schematic

LC-13E1E LC-15E1E

SERVICE MANUAL

S72M8LC-13E1E

LCD COLOUR TELEVISION

LC-13E1E

MODELS

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.

CONTENTS

» IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................... 2

» SPECIFICATIONS ................................................................................................................................... 3

» OPERATION MANUAL ............................................................................................................................ 4

» DIMENSIONS .......................................................................................................................................... 6

» REMOVING OF MAJOR PARTS............................................................................................................. 8

» ADJUSTING PROCEDURE OF EACH SECTION ................................................................................ 12

» TROUBLE SHOOTING TABLE ............................................................................................................. 15

» CHASSIS LAYOUT ................................................................................................................................21

» BLOCK DIAGRAM................................................................................................................................. 22

» OVERALL WIRING DIAGRAM .............................................................................................................. 24

» DESCRIPTION OF SCHEMATIC DIAGRAM ........................................................................................ 28

» SCHEMATIC DIAGRAM ........................................................................................................................ 29

» PRINTED WIRING BOARD ASSEMBLIES........................................................................................... 71

» PEPLACEMENT PARTS LIST............................................................................................................... 82

» PACKING OF THE SET......................................................................................................................... 97

LC-15E1E

Page

SHARP CORPORATION

LC-13E1E

LC-15E1E

IMPORTANT SERVICE SAFETY PRECAUTION

Service work should be perfomed only b y qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow:

WARNING

1. For continued safety, no modification of any circuit should be attempted.

2. Disconnect AC power before servicing.

CAUTION: FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE REPLACE ONLY WITH SAME TYPE F1(1.25A, 250V), F2(1.25A, 250V), F6500 (1.25A, 250V) AN D F6501 (1.25A, 250V) FUSE.

BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)

Before returning the receiver to the user, perform the following safety checks:

1. Inspect all lead dress to make certain that leads are not pinched, and check that hardware is not lodged between the chassis and other metal parts in the receiver.

2. Inspect all protective devices such as non-metallic control knobs, insulation materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacitor networks, mechanical insulators, etc.

3. To be sure that no shock hazard exists, check for leakage current in the following manner.

• Plug the AC cord directly into a 110~240 volt A C outlet, and connect the DC power cable into the receiver's DC jack. (Do not use an isolation transformer for this test).

• Using two clip leads, connect a 50k ohm, 10 watt resistor paralleled by a 0.15µF capacitor in series with all exposed metal cabinet parts and a known earth ground, such as electrical conduit or electrical ground connected to an earth ground.

• Use an AC voltmeter ha ving with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across the resisor.

• Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor. All checks must be repeated with the AC cord plug connection reversed. (If necessar y, a nonpolarized adaptor plug must be used only for the purpose of completing these checks.) Any reading of 0.75V peak (this corresponds to 0.5 milliamp. peak A C .) or more is e xcessive and indicates a potential shock hazard which must be corrected before returning the monitor to the owner.

DVM

AC SCALE

50k ohm

10W

0.15 F

TEST PROBE

TO EXPOSED METAL PARTS

CONNECT TO KNOWN EARTH GROUND

234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121

SAFETY NOTICE

Many electrical and mechanical parts in LCD television have special safety-related characteristics. These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily increased by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual; electrical

and shaded areas in the

Schematic Diagrams

For continued protection, replacement parts must be identical to those used in the original circuit. The use of a substitute replacement parts which do not have the same safety characteristics as the factory recommended replacement parts shown in this service manual, may create shock, fire or other hazards.

components having such features are identified b y “ å”

234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121

Replacement Parts Lists

and

Items 13" LCD COLOUR TV, 15" LCD COLOUR TV,

Model: LC-13E1E Model: LC-15E1E LCD panel Advanced Super View & BLACK TFT LCD LCD panel size 13" 15" Number of dots 921,600 dots Video colour system PAL/SECAM/NTSC TV TV-Standard (CCIR) B/G, I, D/K, L Function TV-Tuning System Auto preset 200 ch.

STEREO/BILINGUAL NICAM, IGR AUTO PRESET Yes CATV ~Hyper Band

Brightness 430 cd/m

Lamp life 60,000 hours Viewing angles H: 170° V: 170° Audio amplifier 2.1 W × 2 Speakers 3× 7.5 cm 2 pcs. Terminals AV-IN 1 RGB

AV-IN 2 S-VIDEO, VIDEO, AUDIO OUT AUDIO Antenna DIN

Headphones 3.5 mm ø jack (Rear) OSD language English/German/French/Spanish/Italian/Swedish/Dutch Power requirement DC 12 V,

AC 110 V

–

240 V, 50/60 Hz Weight 3.8 kg 4.5 kg Accessories Operation Manual, Remote Control, Batteries, AC adapter, AC cord,

Cable clamp

Ë As a part of policy of continuous improvement, SHARP reserves the right to make design and specification changes

for product improvement without prior notice. The performance specification figures indicated are nominal values of production units. There may be some deviations from these values in individual units.

SPECIFICATIONS

LC-13E1E LC-15E1E

LC-13E1E

TV/VIDEO

Volume (–)/(+)

POWER/STANDBY indicator

A green indicator lights when the power is on and a red

indicator lights when in the standby mode (the indicator

will not light when the main power is off).

Speaker

Remote sensor window

Remote sensor indicator

A red indicator blinks when the TV set receives the

remote control signal.

Upper control panel

The screen can be adjusted

backwards to an angle between 12

degrees and 35 degrees. The screen

cannot be set up straight. When

changing the angle, make sure to

hold the stand and adjust the screen

to the best viewable angle.

Controls

Note:

• TV/VIDEO, CH(

)/( ), Volume (–)/(+) and MENU on the main unit have the same functions as the same buttons

on the remote control. Fundamentally, this operation manual provides a description based on operation using the

remote control.

• The LC-13E1E, LC-15E1E have different external dimensions and the positions where the names

of the buttons

are displayed also differ but the same operating procedures are followed for all three models.

LC-13E1E

LC-15E1E

CH (

)/( )

TV/VIDEO

(MAIN POWER)

35°

12°

Adjustable range

-I

-V

AV-

V-IN

IDE

Carrying handle

POWER INPUT

(DC 12V : LC-13E1E/

LC-15E1E)

(DC 13V : LC-20E1E)

AV-IN 1

(21pin Euro-SCART)

S-VIDEO

VIDEO

AUDIO (L)

AUDIO (R)

AV-IN 2

Antenna

AUDIO OUT (L)

AUDIO OUT (R)

Headphones

Rear view

Terminals

LC-15E1E

OPERATION MANUAL

TV/VIDEO

REVEAL

OLD

MENUSOUND

TIT

OK, Programme Table

SUBTITLE

Displays the Teletext

Subtitle directly.

HOLD

Temporarily holds the

current Teletext page.

Mute

Switches the sound on and off.

Yellow,

Timer function Menu

Cyan, Status Display

Turns on the status display

when the menu is not

displayed.

TV/VIDEO

Switches the input source

between AV1, AV2 and

TV mode.

Channel Select

Displays the TV menu.

Volume (+)/(

)

Flashback

Returns to the previous

channel.

Red, Picture Menu

Upwards/ Downwards

Selection, zoom display

function (Teletext mode)

)

END

Returns to normal screen.

)

TEXT

Displays the Teletext mode

screen.

(Power)

SOUND

Switches the sound

mode.

REVEAL

Displays hidden information

such as solutions to riddles

and puzzles.

Right / Left Selection

SUBPAGE

Displays the Teletext

Subpage directly.

ROTATE

Rotates the display in every

direction.

BRIGHT

Selects the brightness

of the display.

Green, Sound Menu

SUBPAGE

ROTATE

RIG

CH ( )/( )

Displays previous/next page.

(Teletext mode)

Installing Batteries in the Remote Control

Before using the LCD TV set for the first time, install the two R-03 (“AAA” size, UM/SUM-4) batteries supplied

in the remote control. When the batteries become depleted and the remote control fails to operate, replace

the batteries with new R-03 (“AAA” size, UM/SUM-4) batteries.

Open the battery cover.

Insert two R-03 (“AAA” size,

UM/SUM-4) batteries.

Replace the battery cover.

Ë Position the positive and

negative ends of the

batteries as indicated in

the compartment.

Caution!

Precautions regarding batteries

Ë Improper use of batteries can result in a leakage of chemicals and/or explosion. Be sure to follow the

instructions below.

• Place batteries with their terminals corresponding to the (+) and (–) indications.

• Different types of batteries have different characteristics. Do not mix batteries of different types.

• Do not mix old and new batteries. Mixing old and new batteries can shorten the life of new batteries and/

or cause old batteries to leak chemicals.

• Remove batteries as soon as they are depleted. Chemicals that leak from batteries can cause a rash. If

chemical leakage is found, wipe it off with a cloth.

• The batteries supplied with the product may have a shorter life expectancy due to storage conditions.

• If the remote control is not to be used for an extended period of time, remove the batteries from the

remote control.

Ë Engaging the lower

claw with the remote

control, close the

cover.

Ë Slide the cover while

pressing the ( ) part.

LC-13E1E LC-15E1E

DIMENSIONS

Ë LC-13E1E

Unit: mm

LC-13E1E LC-15E1E

Ë LC-15E1E

Unit: mm

LC-13E1E LC-15E1E

REMOVING OF MAJOR PARTS

1. Remove the table stand fixing screws (4 pcs.).

2. Remove the two terminal covers.

3. Remove the terminal section fixing screws (2 pcs.).

4. Remove the cabinet B fixing screws (6 pcs.).

5. Cabinet A is opend order of 5-1 to 5-6 , and detach the Cabinet B.

6. Remove the top cover fixing screws (2 pcs.).

7. Remove the operation PWB fixing screws (2 pcs.).

8. Detach the connector from each PWB.

Terminal Cover (S)

5-4

5-3

5-5

Cabinet A

5-2

5-6

5-1

Terminal Cover (L)

Cabinet B

Stand

Operation PWB

P2003

P1903

Inverter PWB

P6502

SC3100

P6500

P6501

Main PWB

SC1203

P4001

SC1201SC1202

SC2002

SC1602

SC2001

P3702

R/C, LED PWB

Tuner PWB

P3301P3302P3601

P3603

9. Remove the inverter PWB fixing screws (2 pcs.).

10. Remove the main PWB fixing screws (2 pcs.)(LC-13E1E).

10. Remove the main PWB fixing screws (3 pcs.)(LC-15E1E).

11. Remove the 21-pin terminal fixing screws (2 pcs.).

12. Remove the tuner PWB fixing screws (3 pcs.) and detatch the chassis frame cover fixing hooks.

13. Remove the R/C, LED PWB fixing screws (2 pcs.).

14. Remove the LCD panel unit fixing screws (2 pcs.).

(LC-15E1E)

LC-13E1E LC-15E1E

Chassis Frame

Main PWB

Tuner PWB

Inverter PWB

Chassis Frame Cover

LCD Panel Unit

R/C, LED PWB

LC-13E1E LC-15E1E

» Precautions in handling the LCD panels

1. Work in a clean room (with humidities below 50%).

2. Be sure to wear an anti-static armband.

3. Handle the panels on an electroconductive mat.

4. Be careful not to fall, shake and shock the panels.

15. Remove the LCD panel unit fixing screws (2 pcs.) (~ LC-13E1E).

15. Remove the LCD panel unit fixing screws (4 pcs.) (LC-15E1E).

16. Detach the two diffusion sheets and reflection/deflection sheet.

17. Detach the four reflection mirrors.

18. Remove the lamp unit.

19. Detach the lamp guide plate.

20. Detach the two lamp reflection sheets.

Reflection Mirror

Lamp Reflection Sheet (Cover) (PSHEP0306CEZZ): LC-13E1E (PSHEP0307CEZZ): LC-15E1E

LCD Panel Unit

Lamp Unit (KLMP-0120CEZZ): LC-13E1E (KLMP-0122CEZZ): LC-15E1E

Reflection/deflection Sheet (PSHEP0276CEZZ): LC-13E1E (PSHEP0281CEZZ): LC-15E1E

Light Guide Plate (PGiDM0069CEZZ): LC-13E1E (PGiDM0070CEZZ): LC-15E1E

Diffusion Sheet (PSHEP0278CEZZ): LC-13E1E (PSHEP0283CEZZ): LC-15E1E

Sheilding Plate (PSLDMA024WJFW): LC-13E1E (PSLDM4689CEFW): LC-15E1E

Reflection Mirror

Lamp Reflection Sheet-1

(PSHEP0279CEZZ): LC-13E1E (PSHEP0284CEZZ): LC-15E1E

Lamp Reflection Sheet-2 (PSHEP0280CEZZ): LC-13E1E (PSHEP0285CEZZ): LC-15E1E

LC-13E1E LC-15E1E

» Precautions at the time of the side B(back) service of main unit.

1. Remove only SC2001 of the FFC for connection between Main unit(SC2001) and Tuner unit(SC3100), and connect the extended cable (QCNW-A369WJZZ) for service.

2. Remove only P3702 of the FFC f or connection between Main unit(P3702) and T uner unit(P1903), and connect the extended cable (QCNW-A371WJZZ) for service.

3. Remove only SC2002 of the FFC for connection between Main unit(SC2002) and Tuner unit(SC1602), and connect the extended cable (QCNW-A370WJZZ) for service.

4. Remove the R/C, LED unit. 4-1. Peel off the tape. 4-2. Remove a lead from a wire holder. 4-3. Remove the R/C, LED unit fixing screws(2 pcs.).

5. Remove the main unit fixing screws(3 pcs.), a substrate is reversed.

Main unit (Side B)

4-1

Tape

R/C, LED PWB

Main PWB

SC1203

4-3

P4001

SC1201SC1202

Inverter PWB

P6502

SC3100

SC2002

SC1602

SC2001

P3702

P2003

P1903

P6500

P6501

Tuner PWB

Wire holder

4-2

P3301P3302P3601

P3603

LC-13E1E LC-15E1E

ADJUSTING PROCEDURE OF EACH SECTION

The best adjustment is made before shipping. If any position deviation is found or after part replace is performed, adjust as follows.

Preparation for adjustments

Use the dedicated AC adaptor or stable DC power supply. AC adaptor: UADP-A007WJPZ DC power supply: 12V 4.0A

1.Adjusting procedure

• Checker adjustment Power ON (Adjustment processing mode) → +B adjustment → Counter bias adjustment → TAMP (Contrast) adjustment → White balance adjustment

2.Entering the adjustment processing mode

There are the following two methods.

• Setting the pin (81)(KEY4) or pin (82)(KEY5) of IC2001 (microprocessor) to GND, turn on the power.

• A “POWER” key is made on with pushing an “TV/VIDEO” and “MENU” keys at the same time.(K of the inspection

process mode is displayed by the upper left of the image plane .) → Next, “CH (Ù)” and “VOL (–)” keys are pushed

at the same time.(It becomes the image plane of the adjustment process mode.).....When it is canceled, it is made

to turn it off.(Even off in the “MAIN POWER” key, off with R/C are good.)

3.Key operation in the adjustment process mode

• The receiving channel UP/DOWN is performed with the “CH (ù)/(Ù)” keys. One push ... The UP/DOWN tuning is performed per channel. Continuous push ... The UP/DOWN search is performed until a next receivable station is found.

• V arious adjustments The adjustment is performed for each item by the “MENU”, “Menu cursor”, “CH (ù)/(Ù)” or “VOL (+)/(–)” keys (LCD TV set and remote control).

• Adjustment item is chosen with the Menu cursor upward/downward keys.

• The adjustment item makes a toggle operation with the “MENU” key input. (Next item) If the “MENU” key is input while the bottom item is selected, it moves to the top item on the next page.

• Press the auto preset button on the remote controller in the adjustment process mode, and the top item of the

next page will show up regardless of which item appears now. Page 1 → Page 2 → ... → Page 24 → Page 1

• Press the manual memory button on the remote controller in the adjustment process mode, and the top item of the same page will show up.

• UP/DOWN of each adjustment vale selected is performed with the VOL (+)/(–) keys input.

• For P16 – 17, the unit enters the register select mode with the VOL (+)/(–) k e ys input while NTSC/PAL is selected,

and the cursor moves to the address 01.

• The cursor moves up or down with the “CH (ù)/(Ù)” keys and moves left or right with the VOL (+)/(–) k eys, and a decision is made with the 12 key. When the decision is made, the cursor moves to the adjustment v alue selected, and UP/DOWN of each adjustment value selected by the “VOL (+)/(–)” keys input is performed. 0 ↔ 1 ↔ ... ↔ 9 ↔ A ↔ ... ↔ F ↔ 0 ↔ ... Decide with the 12 key and return to the address select. Move to the next item with the “MENU” key. During address select, the cursor movement by the “VOL (+)/(–)” keys input is as follows: Example: 01 ↔ 02 ↔ 03 ↔ 01 ↔ ... The cursor movement by the “CH (ù)/(Ù)” keys input is as follows: Example: 02 ↔ 05 ↔ ... ↔ F6 ↔ 02 ↔ ...

LC-13E1E LC-15E1E

4.Initialization

When the microprocessor (IC2001) or the EEPROM (IC2004) has been replaced or when the EEPROM has been initialized, readjust the each adjustments. 4-1. Connect the pins (81) and (82) of IC2001 (microprocessor) to GND, and turn on the power. 4-2. Select the model name to (E1E). 4-3. Select the inch size (13)~1 or (15)~2. 4-4. LED changes green from red after setting finish and about 15 seconds, initialization is completed, and it

becomes adjustment mode.

NOTE:

~1: MODEL. LC-13E1E ~2: MODEL. LC-15E1E

5.Adjustment

5-1. +B adjustment...Page 1 +B-ADJ

Adjust the voltage of the pin (13) of P2002 to 5.00 ±0.02V. Note: Since 5.0V is a reference voltage of all power voltage, adjust it precisely.

5-2. Counter-bias adjustment

Vary the "COM BIAS" setting on Page 2 of the adjustment process mode so that the contrast be sharpest (black looks most sinking).

5-3. TAMP adjustment

1) Receive the upper left of 75% white half colour bar signal.

2) See if the “Y” reading on page 2 of the adjusment process mode is somewhere following. If not, make the “PAL T AMP” adjustment to get the “Y” reading in the range of BF thru C9.

3) If the adjustment of “PAL T AMP” is executed, write its adjustment value to the “SECAM TAMP” manually.

(Screen of the page 2 of the adjustment processing menu OSD)

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 0 1 2 3 4 5 6 7 8

10 11 12 13

COM B I AS 9 0 PAL TAMP 21

SECAM TAMP 21 RCU TOF F GCUTOF F

BCU TOF F G3 B3 R3 00 00 00 G1 B4 Y 0 0 00 B5

TAMP H TAMP L

—

— 3

C9 BF

5 0

Y Data

(White 75%)

5-4. White balance adjustment

Adjust “RCUTOFF” and “BCUTOFF” on the page 2 of the adjustment processing so as to obtain the colour of the same level as the standard set. Note: For the adjustment processing of “RCUTOFF” and “BCUTOFF”, adjust them in the indication value range of ... –9, –7, ... –1, +1, ... +7, +9. When it becomes even-numbered value, side favor noise sometimes occurs in the monochrome signal of the specific gradation.

LC-13E1E LC-15E1E

6. Factory Setting

6-1. Perform a factory setting after completing all adjustments. 6-2. A “POWER” keys is made on with pushing an “TV/VIDEO” and “MENU” keys at the same time. 6-3. “K” of the inspection process mode is displayed on the screen upper left. 6-4. CH (ù) and VOL (+) keys are pushed about 2 seconds at the same time. 6-5. Release keys, if “E” is displayed on the screen upper left and “COMPLETE” is displayed on the bottom of it. 6-6. After a while, a power will be in a standby mode and a setup will be finished. Note: “First installation” serves on “Deutsch”.

7. Lamp error detection

7-1. Functional description

This LCD colour television has a function (lamp error detection) to be turned OFF automatically for safety when the lamp or lamp circuit is abnormal. If the lamp or lamp circuit is abnormal, or some other errors happen, and the lamp error detection is executed, the followings occur. 1 The main unit of television is turned OFF 5 seconds after it is turned ON. (The power LED on the front side

of TV turns from green to red.)

2 If the situation 1 happens 5 times sequentially, television can not be turned ON. (The power LED remains

red.)

7-2. Countermeasures 7-2-1.Check when turning OFF the lamp error detection

When television is turned OFF by the lamp error detection mentioned above, it enters the adjustment process with the power LED red. Entering the adjustment process turns OFF the error detection and turns ON TV. This enables the operation check to detect errors in the lamp or lamp circuit. Check whether "ERROR NO RESET" on line 9, page 1 of the adjustment process is 1 or more. If it is 1 or more, it indicates the lamp error detection was executed.

7-2-2.Resetting of the lamp error count

After confirming that the lamp or lamp circuit is normal, reset the lamp error count. Select "ERROR NO RESET" on line 9, page 1 of the adjustment process and set the number to 0 using the volume button.

Page 1 of the adjustment process

+B — A D J 160 M O D E L E1E INCH S I ZE ~3 N T S C P W M F R E Q 0C0 P A L P W M F R E Q 0BD N T S C P W M D U T Y 0 P A L P W M D U T Y 0 T V G A I N OFF ERROR NO RESET 5

Reset 0

P U B L I C M O D E OFF

E 1 E V E R 1 . 0 0 0

Afterwards, perform the operation check to confirm that the lamp error detection does not function. NOTE:~3 LC-13E1E=13, LC-15E1E=15

TROUBLE SHOOTING TABLE

No picture, No sound

Check all the settings microprocessor

’s adjust process menu.

Do F1 and F2 function?

Are T3701’s secondary

outputs +31V, +22V, +9V,

+5V and -8V normal?

Remove F1 and F2 and

check the load side.

Is there short-circuiting?

Is there short-circuiting of

T3701 primary side periphery,

Q3700, Q3701 and S4701?

Replace F1 and F2.

Check S4701 and

connection cable.

Is T3701’s primary oscillator

waveform normal?

Check T3701’s secondary

load.

Yes Yes

No No

Yes

Check J3702 periphery and

connection cable.

Yes

Back light lamp failure to light up

Replace F6500 and F6501.

Is the pin (34) of IC1201 in

the "H" state?

Is the primary side of

T6500~T6503 periphery

short-circuiting?

Replace the back light lamp

with new one and check

again.

Yes

Check the OFL1 line, IC1201

and their peripheral parts.

Check T6500~T6503,

Q6500~Q6505 and

connection cable.

LC-13E1E LC-15E1E

LC-13E1E

No picture (1)

Check all the settings microprocessor

’s adjust process menu.

Is in/output of

IC801 normal?

Is in/output of

IC1201 normal?

Check IC801

and its

peripheral parts.

Check IC1201

and its

peripheral parts.

Check IC402

and its

peripheral parts.

Check IC801,

AV1 line and its

peripheral parts.

Check LCD

panel voltages

and waveform.

Yes

No picture

at all

Is in/output of

IC402 normal?

Is input at pin

(73) of IC801

normal?

Yes

No TV and

S-Video

output

Is voltages at

pins (6), (7) and

(18) tuner

normal?

Is output at pin

(13) of tuner

normal?

Check the

power line.

Check tuner

and its

peripheral parts.

Is input at pin

(3) of IC402

normal?

Is the pins (2)

and (4) of IC402

at "H" and "L"

state?

Yes

No TV output

Is the pins (65)

and (66) of

IC2001 at "H"

and "L" state?

Yes

Check the its

line.

Check the its

line.

Check IC402

and its

peripheral parts.

Is input at pin

(75) of IC801

normal?

Check V1 IN

line and its

peripheral parts.

No VIDEO 2

output

LC-15E1E

TROUBLE SHOOTING TABLE (Continued)

No picture (2)

Check all the settings microprocessor

’s adjust process menu.

Is input at pin

(74) of IC801

normal?

Check the AV2

line and its

peripheral parts.

Check the W9,

SY-line, SC-line

and their

peripheral parts.

No VIDEO 1

output

Is input at pin (1)

of IC402 and pin

(71) of IC801

normal?

No S-VIDEO

output

Check IC1203

and its

peripheral parts.

Yes

No TELETEXT

output

Yes

Is input at pins (2),

(5), (11), and (14)

of IC1203 normal?

Is input at pins (3),

(4) and (5) of

SC1602 normal?

Is output at pins (1)

and (7) of IC1619 and

pin (1) of IC1620

normal?

Check connection

cable

Check the R, G

and B line.

Check IC1619,

IC1620 and their

peripheral parts.

Is output at pins

(57)~(59) of IC1601

normal?

Yes

Check V2V0 line

and its peripheral

parts.

Is input at pin (21) of

IC1601 normal?

Check IC1601 and its

peripheral parts.

LC-13E1E LC-15E1E

LC-13E1E

No picture (3)

Check all the settings microprocessor

’s adjust process menu.

Is output of

R0~R7

normal?

Is output of

G0~G7

normal?

Is output of

B0~B7

normal?

Yes

Colour is

unusual

Is in/output of

SPIO and

SPOI normal?

No picture

image

inversion

Gradation

defect

Is output of U/D

normal?

Yes

Check R1202 and

its peripheral parts.

Check R1209 and

its peripheral parts.

Check IC1206,

IC1207, Q1201 and

their peripheral

Check R1203 and

its peripheral parts.

Check R1204 and

its peripheral parts.

Is output V0, V7, V17,

V21, V32, V64, V112,

V176, V235 and

V255 normal?

Check IC1106,

IC1107, IC1108,

IC1114, IC1115 and

their peripheral parts.

LC-15E1E

TROUBLE SHOOTING TABLE (Continued)

No sound (1)

Check all the settins microprocessor

’s adjust process menu.

Is the pin (53) of

IC2001 in the

"L" state?

Is output at pins

(27) and (28) of

IC1901 normal?

Is output at pins

(1) and (7) of

IC1903 normal?

Yes

No sound

from front

speakers

Yes

Muting effect is

on. Check the

FSMUTE line.

Check IC1901

and its

peripheral parts.

Check IC1903

and its

peripheral parts.

Is the pin (52) of

IC2001 in the

"L" state?

Is output at pins

(24) and (25) of

IC1901 normal?

Is output at pins

(1) and (7) of

IC304 normal?

Yes

Muting effect is

on. Check the

HP_MUTE line.

Check IC1901

and its

peripheral parts.

Check IC304

and its

peripheral parts.

No sound

from

headphone

TV sound

failure

Is output at pins

(33) and (34) of

IC1901 normal?

Is output at pins

(1) and (7) of

IC3500 normal?

Check IC1901

and its

peripheral parts.

Check IC3500

and its

peripheral parts.

Yes

No sound

from output

line

Check the tuner

and its

peripheral parts.

Yes

Is output at pin

(11) of TU1

(Tuner) normal?

Is input at pins

(67) and (69)

of IC1901.

Check IC1901

and its

peripheral

parts.

Check J5003

(Headphone Jack)

and connection

cable.

Is output at pins

(8) and (12) of

IC3305 normal?

Check IC3305

and its

peripheral parts.

Check front

speaker and

connection

cable.

Yes

LC-13E1E LC-15E1E

LC-13E1E

No sound (2)

Check all the settings microprocessor

’s adjust process menu.

Yes

No sound from SCART

SCART sound failure

Yes

Check IC1901 and its

peripheral parts.

Is output at pins (36) and (37) of

IC1901 normal?

Check IC1902 and its

peripheral parts.

Is output at pins (1) and (7) of

IC1902 normal?

Check their lines and their

peripheral parts.

Is input at pins (53) and (54) of

IC1901 normal?

Check IC1901 and its

peripheral parts.

Is output at pins (27) and (28) of

IC1901 normal?

LC-15E1E

TROUBLE SHOOTING TABLE (Continued)

CHASSIS LAYOUT

LC-13E1E LC-15E1E

OPERATION Unit

INVERTER Unit

MAIN Unit

TUNER Unit

R/C, LED Unit

654321

LC-13E1E

LC-15E1E

BLOCK DIAGRAM

V1.SY

TUNER

TV_V

SIF1/2 AI_L/R

SC_L/R

TV/AV

SELECTOR

IC402

AUDIO AMP

IC1902

ANA_IN1+/2+

SC2_IN_L/R

SC1_OUT_L/R

SC1_IN_L/R

V2_V R/G/B_IN

V1. SC

V1IN

PAVCC(+12V)

DACM_L/R

MSP

IC1901 DACA_L/R

CSYNC

PROM

IC2030

VPC

IC801

V2V0

SYNC SEP

IC401

UART

I2C

SC2_OUT_L

MICON IC2001

J5002

J5001

ANTENNA

SCART (AV1)

AUDIO IN

AUDIO OUT VIDEO OUT

SDA/RXD

SCL/TXD

VIDEO IN

R/G/B_ST

INPUT

VIDEO (AV2)

INPUT

AUDIO (AV2)

INPUT

V1.L/R

C/UART

SC3903

SC5001

J3702

DC12V

INPUT

PAVCC

SIGVCC

INVVCC

PWM

IC3701

REG

IC1208

IC751

DC/DC

CONVERTER

T3701

Q3700

+12V

+3.3V

+5V

+31V —20V

REG

Q3706

IC1610

IC752

Q3704

IC3702

Q3707

REG

+9V +8V

+5V

+3.3V

—8V

IC1606

IC1613

+22V

+31V

+5V

+3.3V

+2.5V

87109654321

LC-13E1E LC-15E1E

CM_L/R

CA_L/R

SC2_OUT_L/R

I2C

030

MICON IC2001

AUDIO AMP

IC304

Y/UV

SYNC SIGNAL

CONTROL SIGNAL

PROM

IC2004

RESET

IC2002

L_ERR

AUDIO ACTIVE FILTER

IC1903

AUDIO AMP

IC3500

LCD

CONTROLLER

IC1201

0FL1

OSD R/G/B

R/G/B

OSD/TEXT SELECTOR

IC1203

TEXT R/G/B

L/R_IN AUDIO

POWER AMP

IC3305

A0_L/R

PAVCC(+12V)

REV

GRADATION POWER

MPCLK MPDA

DAC2CS

IC1102~1108 IC1110 IC1112~1115

DAC1CS

DAC

IC1101 1111

FLSP/FRSP

HL/R

R0~7 G0~7 B0~7

V0 V7 V17 V21 V32 V64

V112 V176 V235 V255

VGLCOM

COMMON DRIVE

IC1109

VCOM

CSCOM

SPEAKER

HEADPHONE JACK

AUDIO OUT

LCD PANEL

P3301 P3302

J5003

J3902

J3903

SC1201 SC1202

SC1203

P3601

+22V

+31V

+5V

+3.3V

+2.5V

UART

CVBS

TEXT R/G/B AMP

IC1619 1620

R/G/B

TELETEXT

CPU

IC1601

OFL REVERSE Q3650

FLASH 4M

SRAM 2M

IC1603

IC1602

OFL

L_ERR

DC/AC INVERTER DRIVE

Q6500 ~6504

LAMP ERROR DETECTOR

Q3600 3601

DC/AC TRANS

INVVCC(+12V)

T6500 ~6503

HV1/2/3

BACK LIGHT LAMP

P4001

KEY

P4004

REMOTE

CONTROL

RECEIVER

1716 1918151413121110

LC-13E1E LC-15E1E

MODEL LC-13E1E OVERALL WIRING DIAGRAM

87109654321

LC-13E1E LC-15E1E

1716 1918151413121110

LC-13E1E LC-15E1E

MODEL LC-15E1E OVERALL WIRING DIAGRAM

87109654321

LC-13E1E LC-15E1E

1716 1918151413121110

LC-13E1E LC-15E1E

DESCRIPTION OF SCHEMATIC DIAGRAM

VOLTAGE MEASUREMENT CONDITION:

1. Voltages at test points are measured on e xclusiv e AC adapter and the stable supply voltage of AC 120V. Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.

INDICATION OF RESISTOR & CAPACITOR:

RESISTOR

1. The unit of resistance “Ω” is omitted. (K=kΩ=1000 Ω, M=MΩ).

2. All resistors are ± 5%, unless otherwise noted. (J= ± 5%, F= ± 1%, D= ± 0.5%)

3. All resistors are 1/10W, unless otherwise noted.

4. All resistors are Carbon type, unless otherwise noted.

: Solid S : Oxide Film T : Special N : Metal Coating

CAPACITOR

1. All capacitors are µF, unless otherwise noted. (P=pF=µµF).

2. All capacitors are 50V, unless otherwise noted.

3. All capacitors are Ceramic type, unless otherwise noted.

(ML): Mylar (TA): Tantalum (PF): Polypro Film (ST): Styrol

: Cement

CAUTION:

This circuit diagram is original one, therefore there may be a slight difference from yours.

IMPORTANT SAFETY NOTICE:

PARTS MARKED WITH “å” ( ) 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.

SCHEMATIC DIAGRAM

R/C, LED and OPERATION Unit

LC-13E1E LC-15E1E

654321

LC-13E1E LC-15E1E

MAIN Unit-1/6 (LC-13E1E)

87109654321

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