SHARP LC15PX1U Service Manual

LC-15PX1U

SERVICE MANUAL

S15D4LC15PX1U

LCD COLOR TELEVISION

MODEL

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

» IMPORT ANT SER VICE SAFETY PRECAUTION.........................................................................................2

» SPECIFICATIONS ........................................................................................................................................5

» OPERATION MANUAL ............................................................................................................... ..................6

» DIMENSIONS ...............................................................................................................................................8

» REMOVING OF MAJOR P ARTS ..................................................................................................................9

» ADJUSTING PROCEDURE OF EACH SECTION .....................................................................................14

» TROUBLE SHOOTING TABLE ..................................................................................................................20

» CHASSIS LAYOUT .....................................................................................................................................26

» BLOCK DIAGRAM......................................................................................................................................28

» OVERALL WIRING DIAGRAM ...................................................................................................................30

» DESCRIPTION OF SCHEMATIC DIAGRAM .............................................................................................32

» SCHEMATIC DIAGRAM .............................................................................................................................33

» PRINTED WIRING BOARD ASSEMBLIES................................................................................................74

» REPLACEMENT PARTS LIST.................................................................................................................... 85

» PACKING OF THE SET............................................................................................................................103

LC-15PX1U

Page

SHARP CORPORATION

This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

LC-15PX1U

2

3

3

IMPORTANT SERVICE SAFETY PRECAUTION

Ë

Service work should be performed only by 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 F3701 (2.5A, 250V), F3702

A V

(2.5A, 250V), F6501(1.25A, 250V)
AND F6502 (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 AC 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 1.5k 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 having with 5000 ohm per volt, or
higher, sensitivity or measure the AC voltage drop
across the resistor.

• 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 necessary, 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 mA.
peak AC.) or more is excessive and indicates a potential
shock hazard which must be corrected before returning
the monitor to the owner.

DVM

AC SCALE

1.5k ohm
10W

0.15 µF

TEST PROBE

TO EXPOSED
METAL PARTS

CONNECT TO
KNOWN EARTH
GROUND

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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 by " å"

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2

Replacement Parts Lists

.

and

LC-15PX1U

2

2

2

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

Ë

Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement
accoutumé à toute vérification de sécurité et aux conseils suivants.

AVERTISSEMENT

1. N'entreprendre aucune modification de tout circuit.
C'est dangereux.

2. Débrancher le récepteur avant toute réparation.

PRECAUTION: POUR LA
PROTECTION CONTINUE
CONTRE LES RISQUES
D'INCENDIE, REMPLACER LE
FUSIBLE PAR UN FUSIBLE DE

A V

MEME TYPE F3701 (2.5A, 250V),
F3702 (2.5A, 250V), F6501 (1.25A,
250V), F6502 (1.25A, 250V).

VERIFICATIONS CONTRE L'INCEN-DIE ET
LE CHOC ELECTRIQUE

Avant de rendre le récepteur à l'utilisateur, effectuer
les vérifications suivantes.

1. Inspecter tous les faisceaux de câbles pour s'assurer
que les fils ne soient pas pincés ou qu'un outil ne soit
pas placé entre le châssis et les autres pièces
métalliques du récepteur.

2. Inspecter tous les dispositifs de protection comme les
boutons de commande non-métalliques, les isolants,
le dos du coffret, les couvercles ou blindages de réglage
et de compartiment, les réseaux de résistance-capacité,
les isolateurs mécaniques, etc.

3. S'assurer qu'il n'y ait pas de danger d'électrocution en
vérifiant la fuite de courant, de la facon suivante:

• Brancher le cordon d'alimentation directem-ent à une
prise de courant de 110-240V. (Ne pas utiliser de
transformateur d'isolation pour cet essai).

• A l'aide de deux fils à pinces, brancher une résistance
de 1.5kΩ 10 watts en parallèle avec un condensateur
de 0.15µF en série avec toutes les pièces métalliques

exposées du coffret et une terre connue comme une
conduite électrique ou une prise de terre branchée à la
terre.

• Utiliser un voltmètre CA d'une sensibilité d'au moins
5000Ω/V pour mesurer la chute de tension en travers
de la résistance.

• Toucher avec la sonde d'essai les pièces métalliques
exposées qui présentent une voie de retour au châssis
(antenne, coffret métallique, tête des vis, arbres de
commande et des boutons, écusson, etc.) et mesurer
la chute de tension CA en-travers de la résistance.
T outes les vérifications doivent être refaites après avoir
inversé la fiche du cordon d'alimentation. (Si nécessaire,
une prise d'adpatation non polarisée peut être utilisée
dans le but de terminer ces vérifications.)
Tous les courants mesurés ne doivent pas dépasser
0,5 mA.
Dans le cas contraire, il y a une possibilité de choc
électrique qui doit être supprimée avant de rendre le
récepteur au client.

DVM

ECHELLE CA

1.5k ohm
10W

0.15 µF

SONDE D'ESSAI

AUX PIECES
METALLIQUES
EXPOSEES

BRANCHER A UNE
TERRE CONNUE

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AVIS POUR LA SECURITE

De nombreuses pièces, électriques et mécaniques, dans
les téléviseurs présentent des caractéristiques spéciales
relatives à la sécurité, qui ne sont souvent pas évidentes
à vue. Le degré de protection ne peut pas être
nécessairement augmentée en utilisant des pièces de
remplacement étalonnées pour haute tension,
puissance, etc.
Les pièces de remplacement qui présentent ces
caractéristiques sont identifiées dans ce manuel; les
pièces électriques qui présentent ces particularités sont

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identifiées par la marque " å " et hachurées dans la
liste des pièces de remplacement et les diagrammes
schématiques.
Pour assurer la protection, ces pièces doivent être
identiques à celles utilisées dans le circuit d'origine.
L'utilisation de pièces qui n'ont pas les mêmes
caractéristiques que les pièces recommandées par
l'usine, indiquées dans ce manuel, peut provoquer des
électrocutions, incendies, radiations X ou autres
accidents.

3

LC-15PX1U

Precautions for using lead-free solder

1 Employing lead-free solder

"All PWBs" of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on
the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.
Example:

L Fa

Indicates lead-free solder of tin, silver and copper.

2 Using lead-free wire solder

When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional
lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend
you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit,
contact our service station or service branch in your area.

3 Soldering

As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the conventional lead
solder by 40°C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the
PWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistance
temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering
condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on
and off the power of the bit as required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder . Clean the bit after
every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.

Be careful when replacing parts with polarity indication on the PWB silk.

Lead-free wire solder for servicing

Part No, ★ Description Code
ZHNDAi123250E J φ0.3mm 250g(1roll) BL
ZHNDAi126500E J φ0.6mm 500g(1roll) BK
ZHNDAi12801KE J φ1.0mm 1kg(1roll) BM

4

SPECIFICATIONS

Items LC-15PX1U

LCD panel

15" Advanced Super View & BLACK TFT LCD
Number of dots 921,600 dots XGA
Video color systems N358

TV Standard (CCIR) NTSC

TV function

TV Tuning System PLL 181 ch.
STEREO MTS+SAP

CATV 125 ch.
Y/C FILTER DIGITAL COMB FILTER
Brightness 430 cd/m

2

Viewing angles H: 170° V: 170°
Audio amplifier 2.1 W 2
Speakers 137/64 249/64 in. (4.0 7.0 cm), 2 pcs.

COMPONENT COMPONENT-IN, AUDIO-IN

AV-IN1 AV-IN1, AUDIO-IN, S-VIDEO-IN
Terminals AV-IN2/OUT AV-IN2/AV-OUT, AUDIO-IN/OUT

Antenna F-Type

Headphone Mini-jack for stereo (ø3.5 mm)
OSD language English/Spanish/French
Power supply DC 12V, AC 110-240V, 50/60Hz (AC adapter), AC 110-125V (AC cord)
Power consumption 49 W (0.4 W standby): AC 120V

40 W: DC 12V
Weight 12.6 lbs. (5.7 kg), w/o accessories
Accessories Remote control, Battery ( 2), Antenna cable, AC adapter, AC cord, Cable holder,

Operation manual

ËAs a part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improve-

ment 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.

Model

×

××

×

LC-15PX1U

5

LC-15PX1U

Speaker

HEADPHONE jack

Plug the headphone mini-plug into the Headphone

jack located on the front of the main unit.

CARD lamp

The CARD lamp lights up depending on the

usage status of the card. For details, see Status

of the CARD lamp below.

PC card slot × 2

OPC (Optical Picture Control) indicator

The OPC indicator lights up green when the “OPC” is

set to “ON”.

Remote sensor

OPC (Optical Picture Control) sensor

Speaker

MIC

Microphone used for the Audio Message Board

function.

POWER/WAKE UP TIMER indicator

POWER indicator lights up green when the power is on, and red

when in the standby mode (the indicator will not light when the main

power is off), and orange when the Wak e Alarm is set (the indicator

will light when in the standby mode).

Part Names of the Main Unit

Controls

Status of the CARD lamp

• TV/VIDEO, CH (

)/(

), VOL (–)/(+) 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.

To change the vertical angle of the LCD TV

set, tilt the screen up to 5 degrees forward or

10 degrees backward. The display can also

be rotated up to 25 degrees to right and left.

When tilting or rotating the display, be sure

to securely hold down the stand.

Please adjust the angle so that the display

can be watched most comfortably.

MAIN POWER

Upper control panel

TV/VIDEO

MENU

CH (Channel)

(

)/( )

VOL (Volume)

(–)/(+)

Tilt the display by grabbing onto the

carrying handle while securely holding

down the stand with your hand.

How to adjust the angle

Listening with Headphones

Plug the headphone mini-plug into the HEADPHONE jack located on the front of the main unit.

On-screen display

20

VOLUME

Adjust the sound volume

using VOL (

+

)/(

–

) on the

remote control.

Headphones

• Headphones are not included in the supplied accessories.

• No sound is heard from the main unit speakers when a headphone mini-plug is connected into the HEADPHONE jack.

Status of the LCD TV set Lamp

On or on standby When a card is not inserted in the PC card slot Off

On

When the card in the PC card slot is accessed Red

When the card in the PC card slot is not accessed Green

On standby

When timer-recording is set Orange

When there are audio messages that have yet to be listened Blinking red

Terminals

Carrying handle

Rear View

Y

P

B

P

R

AUDIO (L)

AUDIO (R)

VIDEO

AUDIO (R)

AUDIO (L)

AV-IN2/OUT

ANT. (Antenna terminal)

POWER INPUT

(DC 12V)

VIDEO

AUDIO (L)

AUDIO (R)

S-VIDEO

AV-IN1

COMPONENT

How to Fix the Cables

• Pull the cables connected to each terminal through the holes and close the left and right terminal covers.

Push the cables into the grooves of the support covers. Insert the cable holder (supplied) from above the

support cover and fix the cables.

Cable holder

Terminal cover

Support cover

Terminal cover

OPERATION MANUAL

6

LC-15PX1U

Part Names of the Remote Control

POWER

Turns the Liquid Crystal

Television power on or off.

ALERTS

Displays the Alerts Manager screen.

HOT KEY

Displays the Hotkey Manager screen.

MENU RETURN

Returns to the previous screen.

VOL (+)/(–)

Sets the volume.

MTS

Selects audio settings.

FLASHBACK

Returns to the previous channel.

REC

Records the motion picture.

DISPLAY

Displays the receiving channel and

the current time for 10 seconds.

CAPTURE

Records the still picture.

TV/VIDEO

Switches the input source between

AV1, AV2, COMPONENT

and TV mode.

MENU

Displays the menu screen.

MUTE

Mutes the sound.

CC

Displays Closed Caption subtitles.

Color Buttons

Directly runs the application

assigned by Hotkey Manager function.

Channel Select

Selects the channel.

SLEEP

Sets the sleep timer.

APPS

Displays the Application Manager

screen.

BACKLIGHT

Selects the brightness and

OPC of the screen.

CH ( )/( )

Selects the channel.

Move the cursor upwards

(Select the menu items)

/

Still

(Pause the live TV, playback or recording)

Move the cursor to the right

(Select the menu items)

/

Fast-forward

(Fast-forward the picture)

Move the cursor downwards

(Select the menu items)

/

Stop

(Stop the playback or recording)

ENTER

(Set the menu or items by selecting the cursor)

/

Play

(Start the playback)

Move the cursor to the left

(Select the menu items)

/

Fast-reverse

(Fast-reverse the picture)

How to use the cursor

The cursor is used when:

Selecting a menu in the on-screen display

•

•

Operating PVR functions and Video Player application

Installing Batteries in the Remote Control

Before using the LCD TV set for the first time, install the two

“AAA” size batteries supplied in the remote control. When the

batteries become depleted and the remote control fails to operate, replace the batteries with new

“AAA” size batteries.

1

Open the battery cover.

2

Insert two “AAA” size batteries.

3

Close the battery cover.

Place batteries with their

terminals corresponding

to the (+) and (

–)

indications in the battery

compartment.

Caution!

Precautions regarding batteries

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 LCD TV set may have a shorter operating time 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.

Preparation

Engaging the lower

claw with the remote

control, close the

cover.

Slide the cover while

pressing the (

) part.

+

–

+

–

7

LC-15PX1U

1

/64 (178)

7

127/32 (310)

2023/32 (526)

DIMENSIONS

2

31

/64 (63)

Unit: inch (mm)

219/64 (58)

(including rubber foot)

(363)

64

/

19

14

(307)

32

/

3

12

(56)

32

/

7

2

(213)

64

/

25

8

12

3

/32 (307)

315/16 (100)

(231)

64

/

7

9

61

5

/64 (151)

85/32 (207)

(including rubber foot)

(354)

16

/

15

13

(100)

16

/

(62)

15

64

/

3

29

2

8

REMOVING OF MAJOR PARTS

P3701

P4001

P3302

SC2001

P4050

P2003

P3704

CN3403

P701

CN2

CN3

CN1

P3202

P3404

P3702

P6500

P6501

P6502

P9001

P5100

SC1201

SC1204

P2005

SC1202

P5201

P2005

P9207

P3201

P9202

P6000

7

7

7

7

7

7

7

7

7

6

6

7

6

Operation PWB

Inverter PWB

Tape

Main PWB

R/C, LED PWB

Tape

Card LED PWB

Analog PWB

Wire Holder

1. Remove the four lock screws from the stand, and detach the stand.

2. Remove the terminal covers (large and small).

3. Remove the two terminal screws.

4. Remove the eight lock screws from the cabinet B.

5. With the card eject button held down, open the cabinet in order of
the cabinet B by sliding it toward the PC card slot.

6. Remove the wire holder and tape, and disconnect the connecting cable.

7. Disconnect all the connectors from all the PWBs.

5-4

5-1

thru

5-6

, and detach

LC-15PX1U

Terminal Cover (S)

1

PC Card Slot

4

2

Cabinet B

Stand

5-6

3

5-3

5-2

5-1

Cabinet A

5

5-5

2

Terminal Cover (L)

9

LC-15PX1U

8. Remove the two lock screws from the operation panel (top cover), and detach the operation panel (top cover).

9. Remove the two lock screws from the operation PWB, and detach the operation PWB.

10. Remove the two lock screws from the R/C, LED PWB, and detach the R/C, LED PWB.

11. Remove the three lock screws each from the speakers (left and right), and detach both the speakers.

11

Speaker (R)

Operation PWB

R/C, LED PWB

Operation Panel (Top Cover)

9

Main PWB

Analog PWB

8

Inverter PWB

11

Speaker (L)

10

10

LC-15PX1U

14

14

13

13

16

17

15

12

18

e

Inverter PWB

Main PWB

Analog PWB

Chassis Frame (L)

Chassis Frame (R)

Card Detect PWB

Card Frame
Cover

Card LED PWB

d

a

b

c

12. Remove the two lock screws from the inverter PWB, and detach the inverter PWB.

13. Remove the two lock screw from the card frame cover over, and detach the card frame cover.

14. Remove the five lock screws from the main PWB, and undo the claw a. Detach the main PWB by lifting the area
around the claws and pulling the PWB out.

15. Remove the five lock screws from the analog PWB, and undo the claws b and c. Detach the chassis frame (right)
from the analog PWB by pulling out the terminals. In the same way, undo the claws d and e, and detach the
chassis frame (left) from the analog PWB by pulling out the terminals.

Note: When detaching the main PWB and analog PWB, be careful not to break the PWB-fixing claws.

16. Remove the one lock screw from the card LED PWB, and detach the card LED PWB.

17. Remove the one lock screw from the card detect PWB, and detach the card detect PWB

18. Remove the four lock screws from the LCD panel unit, and detach the LCD panel unit.

11

LC-15PX1U

» 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 electro-conductive mat.

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

19. Remove the four lock screws from the LCD panel unit.

20. Detach the diffusion sheet, prism sheet and reflection/deflection sheet.

21. Detach the four reflection mirrors.

22. Detach the two reflection sheets (Cover).

23. Remove the lamp unit.

24. Detach the Light guide plate.

25. Detach the two reflection sheets-1, -2.

Lamp unit
(KLMP-A045WJZZ)

23

Reflection Sheet (Cover)
(PSHEP0307CEZZ)

22

Back Shield
(PSLDMA608WJFW)

20

19

15" LCD Panel Unit

Reflection Mirror

21

21

Reflection Mirror

Diffusion Sheet
(PSHEP0283CEZZ)

Prism Sheet
(PSHEPA141WJZZ)

Reflection/deflection Sheet
(PSHEP0281CEZZ)

25

24

Reflection Sheet-1
(PSHEP0284CEZZ)

Light Guide Plate
(PGiDMA011WJZZ)

Reflection Sheet-2
(PSHEP0285CEZZ)

12

LC-15PX1U

» Precautions in servicing the B side (backside) of the main PWB unit

1. Disconnect the FFC from between the main PWB (SC1201) and the LCD panel (CN3), and then connect the
service-specific extension FFC (flat cable) (QCNW-A555WJZZ).

2. Disconnect the FFC from between the main PWB (SC1204) and the LCD panel (CN2), and then connect the
service-specific extension FFC (flat cable) (QCNW-A556WJZZ).

3. Disconnect the FFC from between the main PWB (SC1202) and the LCD panel (CN1), and then connect the
service-specific extension FFC (flat cable) (QCNW-B784WJZZ).

4. Disconnect the FFC from between the main PWB (SC2001) and the analog PWB (SC3403), and then connect the
service-specific extension FFC (flat cable) (QCNW-A556WJZZ).

5. Disconnect the lead from between the analog PWB (P3702) and the inverter (P6502), and then connect the
service-specific extension cable (QCNW-A551WJZZ).

6. Disconnect the lead from between the main PWB (P701) and the analog PWB (P3704), and then connect the
service-specific extension cable (QCNW-B749WJQZ).

7. Remove the lock screws from the main PWB, detach the PWB from the chassis frame, and then turn it over to
service.

Main PWB

(Side-B)

Main PWB

2

CN2

SC1204

CN3

SC1201

1

CN1

SC1202

7

3

SC2001

4

SC3403

Analog PWB

6

P701

P3704

P3702

5

P6502

Inverter PWB

Step Part No. Description

1 QCNW-A555WJZZ Extension Cable 20-pin Main (SC1201)-LCD Panel (CN3)
2 QCNW-A556WJZZ Extension Cable 50-pin Main (SC1204)-LCD Panel (CN2)
3 QCNW-B784WJZZ Extension Cable 30-pin Main (SC1202)-LCD Panel (CN1)
4 QCNW-A556WJZZ Extension Cable 50-pin Main (SC2001)-Analog (SC3403)
5 QCNW-A551WJZZ Extension Cable 3-pin Analog (P3702)-Inverter (P6502)
6 QCNW-B749WJQZ Extension Cable 10-pin Main (P701)-Analog (P3704)

13

LC-15PX1U

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 exclusive-use AC adapter or stable DC power supply.

AC adapter: UADP-A044WJPZ
DC power supply: 12 ± 0.5V 5.0A

1.Adjustment Procedure

1-1. Adjusting the checker

Turning on the power (initialization) → Setting the model and size in inches → Transferring the model-specified
data to the E2PROM (I2C) → Calling the adjustment process mode → Starting the adjustment

1-2. Adjusting the finish process

Reassembling the set → Turning on the power → Calling the adjustment process mode (using the remote
controller) → Adjusting the counter bias, TV contrast and white balance

2.Calling the MAIN adjustment process mode

There are the following two ways to choose from.

• Set the Pin (81) (KEY4) or Pin (82) (KEY5) of IC2001 (microprocessor) to "L", turn on the power.

• For servicing, hold down the "TV/VIDEO" and "MENU" keys at once, and turn on the "POWER" switch. (Make
sure the process mode "K" appears at the top left of the screen.) Then press the "CH (Ù)" and "VOL (–)" keys
at once. (Make sure the adjustment process mode screen shows up.) To quit this mode, turn off the power. (Or
turn off the "POWER" switch or use the remote controller’s "OFF" key.)

3.Using the keys for the adjustment process

Selecting a reception channel

• Using the "CH (ù)/(Ù)" key, turn up and down reception (broadcasting) channels.
Just click on the key, and channels are selected on by one.
Hold down the key, and the next receivable channel is searched up and down.

• Adjustment items
Adjust each of the items by using the "MENU", "CURSOR UP/DOWN" and "VOL (+)/(–)" keys (on the set or
on the remote controller).

• Select an adjustment item using the "CURSOR UP/DOWN" key.

• An adjustment item is toggled on and off by activating the MENU SELECT key (next item).
Let’s suppose that the item at the bottom of a page is now selected. When the "MENU" key is activated here,
the item at the top of the next page will be selected.

4.Initialization

4-1. Set pins (81) and (82) of IC2001 (microprocessor) to GND. Turn on the power.
4-2. Check model number (A621). (Can’t Change.)
4-3. Check the inch size (15). (Can’t Change.)

14

LC-15PX1U

5. Adjustment

5-1. Counter bias adjustment: COM BIAS on page 2

Adjust the "COM BIAS" setting until the contrast gets optimum (the black portion blackest). The
adjustment guideline is around 120.

5-2. TAMP adjustment

1) Feed the color bar pattern signal.

2) See if the "Y" reading on adjustment process page 2 is within the range shown below. If not, adjust the
"NTSC TAMP" setting to bring the "Y" reading within the specified range.

Model LC-15PX1U

Adjustment Value 175~185

(Page 2 of adjustment process 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

9
10
11
12

13

2

COM B I AS
TAMP L 71

YD TA
TAMP

NTSC TAMP
PAL – TAMP 31
PAL – N
RCUTOF
GCU TOF
BCU TOF

W

R – GAIN

W

G – GA IN

W

B – GA IN

A

H

M

TAMP
F
F

F

1

0
1

1. 0

20

815
819

31

3
3– 5
3– 2
1– 3

9.2

0.0
0

4

1

Y Data

(White 75%)

5-3. White balance adjustment

[Internal signal] White 80% video signal in left portion of screen and White 40% video signal in right portion

of screen

[Adjustment value]

Adjustment specifications Inspection specifications

White 80% x 0.287 Radius from central point Radius from central point

y 0.290 0.002 0.013

White 40% x 0.276 Radius from central point Radius from central point

y 0.270 0.003 0.013

[Adjustment with the bus]

Gain Suppress the two strong colors.

Adjustable range: 0 to -5

Cut-off Vary the red and blue levels.

Keep the green level fixed at 0 (no adjustment).

Adjustable range: -6 to +4

5-4. A/D CONVERTER LEVEL adjustment

1) Feed the color bar pattern signal. (480P, white 75%)

2) Select "AUTO GAIN-OFFSET" and adjust A/D CONVERTER LEVEL automatically by pushing "VOL (+)
(–)" keys (on the set or remote controller).

15

LC-15PX1U

5-5. Other adjustments (SOUND, VPC, S2310, DAC, TUNER, OTHERS, TEXT)

1) Move the cursor to a desired item on page 4 of adjustment process menu. Press the "CURSOR LEFT/
RIGHT" keys, "VOL (+)/(–)" keys or OK key to select the item.

4
I2C DATA 000000000000
I2C DATA WAIT
SOUND
VPC
S2310
DAC
TUNER
OTHERS
TEXT

2) The adjustment process menu of the item appears on the screen. The settings are now ready to change.
Screen with SOUND selected

SOUND1
VOLUME 0
MSP DATA 000000000000
MSP DATA WAIT
AVC OFF
CARRIER MUTE ON
SP TEST OFF
SHUTTER WAIT 100
IGR THR 12D
MSP ASS WAIT 300ms

3) T o go back to page 4 of adjustment process menu, press the "FLASHBACK" key on the remote controller.

16

6. Lamp error detection

6-1. Functional description

This LCD color 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.)

6-2. Countermeasures
6-2-1. 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 4, page 1 of the adjustment process is 1 or more. If it is 1 or
more, it indicates the lamp error detection was executed.

6-2-2. 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 4, page 1 of the adjustment process and set the number to 0 using the "VOL (+)/(–)"
keys.

LC-15PX1U

Page 1 of the adjustment process

1

M O D E L A621
I N C H S I Z E 15
E R R O R N O R E S E T 5
P U B L I C M O D E OFF
V – C H I P 1
C A N A D I A N VCHIP ON
E X T CONTROL OFF

V E R R O M 1. 0 0A G AI B U 0. 0 0 0

Reset 0

Afterwards, perform the operation check to confirm that the lamp error detection does not function.

17

LC-15PX1U

7. Functions of the PC card

• PCMCIA card Used at 5V/3.3V

• DM270 (IC5001, 5101) CPU, DSP, DMAC, OSD, NTSC encoder: system control, OSD display, video encoding/

decoding Used at 3.3V (1.5V for DSP)

• DA150 (IC5201, 5202) Audio encoding/decoding

• 128M FLASH (IC5002) Storing the program for DA150 and DM270

• 64M SDRAM (IC5006) Used for temporary data storage and for image data compression and expansion.

• Reg (IC5701, 5702) Conversing 4V/6V to 3.3V/5V for PCMCIA

• Reg (IC5703) Conversing 3.3V to 1.5V for DSP in DM270

"Tips"

1) With this product, showing images recorded with PC or DSC enables you to check the playing system.

2) With PC, showing images recorded with this product enables you to check the recording system.

3) Video is played at the rate in sync with IIS CLOCK signals from audio circuit. For example, if the IIS CLOCK
signals fail to reach the card playing circuit for some reason, the video is played at the lowest rate and is shown
in slow motion.

Major input/output terminals on the card system

Card side
IC (connector) Pin No. LSI terminal name Connection diagram Types of signals Explanation for signals I/O
name signal name
DM270 B3.3V_CARD1A B3.3V_CARD1A Power supply Power supply 3.3V for DM270 I
(IC5001, 5101)

103 VIN VIN V signal from VPC to DM270 I
102 HIN HIN H signal from VPC to DM270 I
100 LLC2 (CLK) LLC2 Clock signal from VPC to DM270 I
112 YIN0 YIN0 Data signal 0 from VPC to DM270 I

111 YIN1 YIN1 Data signal 1 from VPC to DM270 I
110 YIN2 YIN2 Video input/output Data signal 2 from VPC to DM270 I
109 YIN3 YIN3 Data signal 3 from VPC to DM270 I
108 YIN4 YIN4 Data signal 4 from VPC to DM270 I
107 YIN5 YIN5 Data signal 5 from VPC to DM270 I
106 YIN6 YIN6 Data signal 6 from VPC to DM270 I
105 YIN7 YIN7 Data signal 7 from VPC to DM270 I

55 RESET RESET Data Reset signal from TV microprocessor to DM270 I
10 CA_DOUT DOUT communication Data signal from TV microprocessor to DM270 I
11 DIN DIN Data signal from DM270 to TV microprocessor I
70 VOUT VOUT V signal from DM270 to IP O
69 HOUT HOUT H signal from DM270 to IP O
68 CKOUT CKOUT Clock signal from DM270 to IP O
81 YOUT0 YOUT0 Data signal 0 from DM270 to IP O
77 YOUT1 YOUT1 Data signal 1 from DM270 to IP O
76 YOUT2 YOUT2 Video input/output Data signal 2 from DM270 to IP O
75 YOUT3 YOUT3 Data signal 3 from DM270 to IP O
74 YOUT4 YOUT4 Data signal 4 from DM270 to IP O
73 YOUT5 YOUT5 Data signal 5 from DM270 to IP O
72 YOUT6 YOUT6 Data signal 6 from DM270 to IP O
71 YOUT7 YOUT7 Data signal 7 from DM270 to IP O

P5201 1 I2S_WS S_WS I2S word strobe L: Right audio input / H: Left audio input I

2 GND
3 I2S_CL S_CL Clock for I2S serial data transmission timing I
4 GND
5 I2SDA_OUT S_DO Audio input/output Audio data input from TV main unit I
6 GND
7 I2SDA_IN1 S_DI In card mode: Card Audio / Not in card mode: Shutter sound O
8 GND
9 I2SDA_IN2 SH_DI

10 GND

Reg 1 IN B4V/6V1_1A 4V/6V output from DC/DC converter to Reg O
(IC5701, 5702) 2 SW B4V/6V1_1A ON/OFF switch I

3 OUT V5EN Power supply 3V power input from DC/DC converter to Reg I

V3EN 5V power input from DC/DC converter to Reg I
4 ADJ For adjustment
5 GND GND GND

18

LC-15PX1U

Main Side
IC (connector) Pin No. Terminal name Signal name Types of signals Explanation for signals I/O
name
P701 9 3.3V (SUB) B3.3V2A Power supply Power supply 3.3V for DM270
(NA215WJ)

VPC 57 VS VPC_VS V signal from VPC to DM270 O
(Video decoder) 56 MSY/HS VPC_HS H signal from VPC to DM270 O
IC8801 27 LLC2 LLC2 Clock signal from VPC to DM270 O

40 Y0 VPC_YIN0 Data signal 0 from VPC to DM270 O
39 Y1 VPC_YIN1 Data signal 1 from VPC to DM270 O
38 Y2 VPC_YIN2 Video input/output Data signal 2 from VPC to DM270 O
37 Y3 VPC_YIN3 Data signal 3 from VPC to DM270 O
34 Y4 VPC_YIN4 Data signal 4 from VPC to DM270 O
33 Y5 VPC_YIN5 Data signal 5 from VPC to DM270 O
32 Y6 VPC_YIN6 Data signal 6 from VPC to DM270 O
31 Y7 VPC_YIN7 Data signal 7 from VPC to DM270 O

TV 83 CARDRST RESET
microprocessor 35 SUB_DOUT DOUT Reset Data signal from TV microprocessor to DM270 O
(IC2201) 36 SUB_DIN DIN Data signal from DM270 to TV microprocessor I
I/P conversion 207 VS_P2 VD_VS V signal from DM270 to IP I
IC 208 HS_P2 VD_HS H signal from DM270 to IP I

195 IN_CLK_P2 VD_CKO Clock signal from DM270 to IP I
196 P2_0 VPC_0 Data signal 0 from DM270 to IP I
199 P2_1 VPC_1 Data signal 1 from DM270 to IP I
200 P2_2 VPC_2 Video input/output Data signal 2 from DM270 to IP I
201 P2_3 VPC_3 Data signal 3 from DM270 to IP I
202 P2_4 VPC_4 Data signal 4 from DM270 to IP I
203 P2_5 VPC_5 Data signal 5 from DM270 to IP I
204 P2_6 VPC_6 Data signal 6 from DM270 to IP I
205 P2_7 VPC_7 Data signal 7 from DM270 to IP I

MSP 5 I2S_WS S_WS I2S word strobe L: Right audio input / H: Left audio input O
(Audio processor)

4 I2S_CL S_CL Clock for I2S serial data transmission timing O

6 I2SDA_OUT S_DO Audio input/output Audio data input from TV main unit O

7 I2SDA_IN1 S_DI In card mode: Card Audio / Not in card mode: Shutter sound I

DC/DC
converter B4V/6V1_1A B4V/6V1_1A Power supply 4V/6V output from DC/DC converter to Reg O
IC704, 707 B4V/6V2_1A B4V/6V2_1A

Data communication,

Reset signal from TV microprocessor to DM270 O

Abolished

19

LC-15PX1U

No picture and sound

Check all the settings on the microprocessor's adjust process menu.

Fluorescent light in trouble

YES

YES

YES

YES

YES

YES

NO

NO

NO

NO

NO

NO

YES

YES

NO

Does the load side keep

normal circuits when F3701

and F3702 are disconnected?

Are F3701, F3702, F6501 and

F6502 normal?

Do Q6502 and Q6505 keep

normal circuits?

Check Q6502, Q6505 and

their peripheral circuits.

Check S4053 and the

connecting cables.

Check the connecting cables

and the peripheral circuits of

J3701.

Are pins (10) and (11) of

IC1201 "H"?

Are the oscillation waves from

the primary sides of T6500

thru T6502 normal?

Check and replace the

fluorescent light.

Check the connecting cables

and the peripheral circuits of

Q6500 thru Q6505.

Check that line, IC1201 and

their peripheral circuits.

Are +35V, +9V, +5V and -12V

on the secondary side output

at T701 normal?

Are pins (14) of IC702 thru

IC707 normal? (1.35V-2.05V)

Check the load side.

Do Q716, S4053 and the

peripheral circuits on the

primary side of T701 keep

normal circuits?

Replace F3701 and F3702.

Are F3701 and F3702

normal?

TROUBLE SHOOTING TABLE

20

NO

NO

NO

YES

YES

YES

NO

NO

NO

NO

YES

YES

YES

YES

NO

YES

NO

YES

NO

NO

YES

No video output (1/2)

Make sure that the microprocessor's adjustment process and menu settings are all as specified.

No images at all

Does the IC1201

test pattern

appear?

Check IC1201 and its

peripheral circuits.

Check also the LCD

panel voltage and

waveform.

Are the input and

output of IC3401

as specified?

Check IC3401

and its peripheral

circuits.

Is the input of

IC8801 as

specified?

Check the signal

input line of

IC8801.

Are the voltages at

pins (6), (7) and (9) of

tuner as specified?

Check the

voltage line.

Is the output at

pin (19) of tuner

as specified?

Check the tuner

and its peripheral

circuits.

Is the input at pin

(1) of IC3401 as

specified?

Check the line

in question.

Is the output of

IC3401 as

specified?

Check IC3401

and its peripheral

circuits.

Is the input at pin

(23) of IC3401 as

specified?

Check the line

in question.

Is the output of

IC3401 as

specified?

Check IC3401 and

its peripheral

circuits.

Is the input at pin

(47) of IC3401 as

specified?

Check the line

in question.

Is the output of

IC3401 as

specified?

Check the line

in question.

Check IC3401

and its peripheral

circuits.

Does the card

circuit test

pattern appear?

Check IC8501 and

its peripheral

circuits. Check also

the card circuit.

Does the

IC8801 test

pattern appear?

Check the signal

input line of

IC8801.

Check IC8801 and its

peripheral circuits.

Check also the card

circuit signal input.

No TV, AV1 and AV2 images

No TV images No AV1 images No AV2 images

*1 thru *3: Getting the test patterns

displayed is referred to on the next page.

*1

*2

*3

TROUBLE SHOOTING TABLE (Continued)

LC-15PX1U

21

LC-15PX1U

TROUBLE SHOOTING TABLE (Continued)

1. Getting the card circuit test pattern displayed (*2)
1-1. Hold down the "MENU" and "TV/VIDEO" keys of the set, and turn on the "MAIN POWER" switch.
1-2. Make sure that "K" shows up in yellow at the left top of the screen.
1-3. Press the "APPS" key of the remote controller, and the card test menu appears.
1-4. Select "F3" on the 3rd line and press the "ENTER" key of the remote controller, and the test pattern

appears onscreen for about 2 seconds.

2. Getting the IC1201 test pattern displayed (*1)
2-1. Take the above steps 1-1 and 1-2. Hold the "CH (Ù) "and "VOL (–)" keys of the set at once.
2-2. The adjustment mode page number "1" shows up in red at the left top of the screen. The adjustment items

are listed below the number.
2-3. Using the "CURSOR UP/DOWN" keys of the remote controller, make Page 4 appear.
2-4. Select "G/A" on the 9th line and press the "ENTER" key, and the IC1201 adjustment menu comes on ("G/

A1" shows up in red at the left top).
2-5. Select "G/A TEST PATTERN" on the 1st line. Turn on and off with the "CURSOR LEFT/RIGHT" keys to get

the test pattern onscreen.
2-6. Adjust the settings and return to OFF.

3. Getting the IC8801 test pattern displayed (*3)
3-1. Take the above steps 2-1, 2-2 and 2-3 to make Page 4 appear.
3-2. Select "VPC" on the 4th line and press the "ENTER" key, and the IC8801 adjustment menu comes on

("VPC1" shows up in red at the left top).

3-3. Select "TEST PATTERN" on the 1st line. Using the "CURSOR RIGHT" key, adjust the setting to other than

"0" to get the test pattern onscreen.

3-4. Adjust the settings and return to "0".

22

NO

NO

YES

NO

NO

YES

NO

YES

YES

NO

NO

YES

No video output (2/2)

Make sure that the microprocessor's adjustment process and menu settings are all as specified.

No S video images

Are the inputs at

pins (71) and (72)

of IC8801 as

specified?

Check the line in

question.

Are the inputs at

pins (1), (5) and

(25) of IC3403 as

specified?

Check the line in

question.

Are the inputs at

pins (4), (5), (6)

and (72) of IC8801

as specified?

Check IC3402 and

IC3403 as well as

their peripheral

circuits.

Are the inputs at

pins (43), (48), (49)

and (54) of IC8701

as specified?

Check the line in

question.

Check IC8701 and

its peripheral

circuits.

Check the file card

media and card

adaptor.

Check the line in

question.

Are the voltages at

pins (37) thru (40)

and (114) thru

(117) of P5601 as

specified?

Check the data,

address and control

lines (IC5601 thru

IC5618) that run

from the card slot

to IC5001 and

IC5101.

Check the

power line.

Are the inputs at

pins (3) and (5) of

IC3401 as

specified?

Check the SY/SC

lines of J3401 and

their peripheral

circuits.

No 480i component video images

No 480P, 1080i and 720P component

video images

No card images

TROUBLE SHOOTING TABLE (Continued)

LC-15PX1U

23

LC-15PX1U

No sound

No sound from speakers

YES

YES

YES

YES

YES

YES

NO

YES

YES

YES

YES

NO

NO

NO

NO

NO

NO

NO

NO

NO

Check the following.

1 No audio output from TV ... Check the

peripheral circuits of Q3203, Q3204 and

TU3000.

2 No audio output from AV1 input ... Check

J3402 thru pins (2) and (4) of IC3401.

3 No audio output from AV2 input ... Check

J3404 thru pins (22) and (24) of IC3401.

4

No audio output from COMPONENT input

... Check J3406 thru pins (46) and (48) of

IC3401.

Is there the audio output in any input mode (TV, AV1,

AV2 and COMPONENT)?

Check the following.

1

Is the monitor output setting at "Audio fixed"?

2

Is the sound volume loud enough?

3

Is the mute mode released?

4

Are the headphones unplugged?

Is the power supply voltage at each circuit normal?

Pin (8) of IC3301 and pin (39) of IC3201 Approx. +8V

Pins (11), (12), (13), (65) and (66) of IC3201 Approx. +5V

No sound from monitor output

Is there the audio signal output at pins

(36)(Rch) and (37)(Lch) of IC3201?

Is pin (55) of IC2001 "H"?

Is the signal from the Q3403 collector "L"?

Check pins (33)(Rch) and (34)(Lch) of IC3201

thru pins (4)(Lch) and (2)(Rch) of J3404.

Check the following.

1

Is there the audio output from speakers?

2

Is the monitor output connected correctly?

3

Is the mute mode released?

No sound from the

headphones

Check the line from J4201

to IC3305 and IC3201.

Check the following.

1

Go to "No Audio from

Speakers".

2

Connect the monitor output

correctly.

3

Release the mute mode.

Check the peripheral circuits of

IC3201.

Check pin (4) of J4021 thru pin

(58) of IC2001.

Check pin (55) of IC2001 thru

Q2203, and Q2201.

Is there the control signal input at each pin of IC3201?

Pin (2) of IC3201 SCL1

Pin (3) of IC3201 SDA1

Are the oscillation waves from pins (71) and (72) of

IC3201 normal?

Check pins (29) and (30) of IC2001 thru pins

(2) and (3) of IC3201.

Check the peripheral circuits of X3201.

Is there the audio signal output at pins (27)(Rch) and

(28)(Lch) of IC3201?

Check pins (27)(Rch) and (28)(Lch) of IC3201 thru

pins (7)(Rch) and (1)(Lch) of IC3304, and the

peripheral circuits of IC3301.

Check the peripheral circuits of IC3201.

YES

YES

NO

NO

Is the voltage at pin (7) (power input terminal) of

IC3304 as specified (about +12V)?

Check the AC adaptor as well as the line from

AC adaptor to pin (7) of IC3304.

Is the voltage at pin (5) (standby control terminal) of

IC3304 as specified (about +2.8V)?

Check the line from pin (56) of IC2001 to pin

(5) of IC3304.

Recheck the following.

1

Set the monitor output to "Audio fixed".

2

Increase the sound volume.

3

Release the mute mode.

4

Unplug the headphones.

Check the following.

+8V system ... Check the peripheral circuits of

Q3711 thru pin (8) of IC3301

and pin (39) of IC3201.

+5V system ... Check the IC702, Q713 output

5V (SUB)

line thru each +5V input pin of

IC3201.

TROUBLE SHOOTING TABLE (Continued)

24

TROUBLE SHOOTING TABLE (Continued)

No Colors

No TV colors

No VIDEO colors No S-VIDEO colors

No COMPONENT colors

Check all the settings on the microprocessor's adjust process menu.

YES

YES

YES

NO

NO

Is the input at pin (71)

of IC8801 normal?

Are the input at pins (4)

and (6) of IC8801

normal? (480i)

Is the input at pins (43)

and (54) of IC8701

normal? (480i, 1080i,

720p)

Check the CB and CR

lines of SC2001 and

their peripheral circuits.

Check the output at

IC8801 (480i), output

at IC8701 (480i, 1080i,

720p), input/output at

IC1201 and their

peripheral circuits.

Is the output at pin (40)

of IC3401 normal?

NO

Check IC3401 and its

peripheral circuits.

NO

Check the output of

IC8801, input / output

of IC1201 and its

peripheral circuits.

Check the Video lines of

IC3401, SC2001 and

their peripheral circuits.

YES

NO

Is the input at pin (71)

of IC8801 normal?

Check between SC

input of J3401 and pin

(71) of IC 8801.

Check the output of

IC8801 input / output of

IC1201 and its

peripheral circuits.

LC-15PX1U

25

LC-15PX1U

CHASSIS LAYOUT

H

G

F

MAIN Unit

E

D

C

B

CARD LED Unit

CARD DETECT Unit

R/C, LED Unit

A

87109654321

26

OPERATION Unit

LC-15PX1U

ANALOG Unit

INVERTER Unit

27

1716 1918151413121110

LC-15PX1U

2

BLOCK DIAGRAM

H

G

F

E

D

C

J3701

(DC 12V IN )

Sound Vcc

(U/V TUNER)

(AV1 input)

J3401
J3402

(AV2 IN/OUT)

J3404

(COMPONENT input)

J3406

J3407

Sound Vcc

F3702

TU3401

S Y/C-IN
VIDEO-IN
AUDIO-IN

Video-in/out

L/R-in/out

L/R-in

Pb/Pr-in

F3701

Q3401,Q3402

Q3403,D3404

Y-in

IC3102
(9V_REG.)

AN_9V

CVBS

(MUTE)

Q3107,Q3110

5V(MAIN)

Q3711

Q3715,D3304

(Mute)

Q3117

(Pow cont.)

3.3V(SUB)

9V

7 6 5 4

IC3202

(EQUALIZER)

IN L/R

I2S in/out

IC3204IC3206

5V_SUB

I2C

17

IC3207

I2C

B5V(D_SW) 1A

8V

IC3201

(Sound Processor)

TV L/R

DACM L/R

67

IC3203

(2.5V_REG)

IC3701
Q3709
Q3710

(REG)

MONO IN

IC3308

(MIC FLT)

DACA L/R

IC3305

(HP Amp)

2.5V

24V
31V

IC3401

(AV SELECT)

I2C

TV-V

CVBS

CVBS

IC3404

(SW)

AN_9V

U/V

Video in
L/R in

VIDEO1

Y/C in
Video in
L/R in

VIDEO2

Video in
L/R in

(75ΩDRIVE /SW)

IC3403

(VIDEO FILTER)

COMPONENT in

Q3414,Q3415
Q3417,Q3405

MONITOR OUT

Q3203, Q3204

(Amp & Buffer)

IC3402

(TA1318AF)

Y out

Pr/Pb out

MAIN OUT

V out 1

Y/C out
L/R out

V out

I2C

I2C

IC702,Q713

(5V_REG)

IC1701
Q1703

-7.5V

B-7V1A

Q8801

(Video Buffer)

Q8802,IC8803

(CSYNC Sep)

B5V_MAIN1A

CSYNC

CVIN

-12V

35V

-7V

IC701,Q716
T701

9V

(REG)

5V

Cr Cb

I2C

Y

480i

IC8801
VPC3230D

Video in 2

Video in 1
C in

Cb/Cr in
Y in
Video in 4

Video out

480p/1080i/720p

IC2005

(EEPROM)

IC2003

(RESET)

I

B

A

IC3304

(Amp)

SP L/R

Q3301,Q3302
Q3303
Q3207,D3205
(Mute)

Mic

IC3301

(Pre Amp)

IC9202

(Mic Amp)

CARD LED UNIT

D9201

(LED)

CARD LED
Cont.

28

J4021

(HP Jack)

IC4201

(OPC sensor)

RMC4001

(R/C Receiver)

R/C, LED UNIT

D4001,D4002
(LED)

87109654321

CARD LED
Cont.

Q2012

(LED Driver)

INVERTER UNIT

LAMP DRIVE

LC-15PX1U

16

IC8801
VPC3230D

Video in 2

Video in 1
C in

Cb/Cr in
Y in
Video in 4

Video out

I2C

ITU_R-656

LLC2

VS/HS

CARD Circuit

IC5102
IC5103
(SDRAM)

IC708,Q725

(3.3V_REG)

Q8602,Q8601

(Card Pow_Cont)

3.3V

P5601 (CARD Slot)

IC5601-IC5618

(BUS Control & Buffer)

IC5101
(Media Processor)

IC5202
(Media Pro_sub)

IC5703

(1.5V_REG)

1.5V

IC5001
(OA Processor)

IC704, Q714
IC707, Q721

(4V/6V_REG & Cont)

IC5701, Q5701
IC5702, Q5702
IC5704

(3.3V/5V_REG & Cont)

3.3V/5V

IC5002
(FLASH)

IC5003
IC5004
(SDRAM)

IC5201

(OA Pro_sub)

IC8606

(SW)

IC8601

(CLK SW)

IC8602

(Buffer)

IC703,Q712

(3.3V_REG)

B3.3V_2A

IC8503

(1.8V_REG)

IC8501

(DIGITAL VIDEO FORMAT
CONVERTER)

ITU-R-656

in

Port 2

• IP CONVERSION

• FRAME RATE CONVERSION

• SCALING
Y/U/V

• CTI, WHITE BALANCE

• BRIGHT, CONTRAST
COLOR, TINT, SHARPNESS

R/G/B

HS/VS/DE

CLK out

L_ERR

IC1202,IC1204

LAMP ERROR CHECK

LCD PANEL
VGA

20/15

IC1101

(Gradation

Cont.)

IC1201

(OSD MIX / LCD
CONTROLLER)

OFL1,OSC
R/G/B

HS/VS/DE

CLK
CLK_2X

CARD DETECT UNIT

S6000,S6001

(Detect SW)

480p/1080i/720p

IC2005

(EEPROM)

Q2012

(LED Driver)

LED

IC2003

(RESET)

IC2004
(5V REG)

OPERATION UNIT

IC2002
(3.3V REG)

IC2001

(MPU)

S4053

(POWER SW)

S4050,S4051,S4052
S4054,S4055,S4056
(Control SW)

IC2006,Q2010

(Din/Dout cont.)

Cr Cb

Y

IC8701 (ADC)

48

43.54

DA/DLK

I2C

I2C

IC8502

(SDRAM)

L_ERR

VS/HS/

G/B/R

CK

RGB24bit
YUV4:4:4
HS/VS/CLK

Port 1

VS/HS/
CK
R/G/B

DA/DLK

29

1716 1918151413121110

LC-15PX1U

OVERALL WIRING DIAGRAM

H

G

F

E

D

C

B

A

87109654321

30