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LC-37D40ULC-45D40U

SERVICE MANUAL

MODELS

LC-37D40ULC-45D40U

LCD COLOR TELEVISION

In the interests of user-safety (Required by safety regulations in some countries) the set should be re-stored to its original condition and only parts identical to those specified should be used.

CONTENTS

Page

IMPORTANT SERVICE SAFETY PRECAUTION ......................................................................................2 SPECIFICATIONS ......................................................................................................................................5 OPERATION MANUAL ...............................................................................................................................6 DIMENSIONS .............................................................................................................................................9 REMOVING OF MAJOR PARTS ..............................................................................................................10 ADJUSTMENT PROCEDURE..................................................................................................................18 TROUBLESHOOTING TABLE .................................................................................................................35 MAJOR IC INFORMATIONS ....................................................................................................................44 OVERALL WIRING DIAGRAM .................................................................................................................46 SYSTEM BLOCK DIAGRAM ....................................................................................................................50 PRINTED WIRING BOARD ASSEMBLIES ..............................................................................................52 PARTS LIST ..............................................................................................................................................64 PACKING OF THE SET ............................................................................................................................86 SCHEMATIC DIAGRAM ...........................................................................................................................88

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

S66U2LC45D40U

2LC-37D40ULC-45D40U

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SAFETY NOTICE

Many electrical and mechanical parts in LCD colortelevision have special safety-related characteristics.These characteristics are often not evident from visualinspection, nor can protection afforded by them benecessarily increased by using replacement componentsrated for higher voltage, wattage, etc.Replacement parts which have these special safetycharacteristics are identified in this manual; electricalcomponents having such features are identified by "

" and shaded areas in the Replacement Parts Listand Schematic Diagrams.For continued protection, replacement parts must beidentical to those used in the original circuit.The use of a substitute replacement parts which do nothave the same safety characteristics as the factoryrecommended replacement parts shown in this servicemanual, may create shock, fire or other hazards.

CAUTION: FOR CONTINUED PROTECTIONAGAINST A RISK OF FIRE REPLACE ONLY WITHSAME TYPE FUSE.

LC-37D40U: F701 (8A, 125V)F4701, F5701 (3A~, 250V, 115C)LC-45D40U: F7801 (8A, 250V)F702, F703 (5A, 125V)F4701, F4703, F5701 (3A~, 250V, 115C)

WARNING

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

2. Disconnect AC power before servicing.

BEFORE RETURNING THE RECEIVER(Fire & Shock Hazard)

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

1. Inspect all lead dress to make certain that leads arenot pinched, and check that hardware is not lodgedbetween the chassis and other metal parts in thereceiver.

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

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

Plug the AC cord directly into a 120 volt AC outlet. Using two clip leads, connect a 1.5k ohm, 10 watt

resistor paralleled by a 0.15F capacitor in serieswith all exposed metal cabinet parts and a knownearth ground, such as electrical conduit or electricalground connected to an earth ground.

Use an AC voltmeter having with 5000 ohm per volt,or higher, sensitivity or measure the AC voltage dropacross the resistor.

Connect the resistor connection to all exposed metalparts having a return to the chassis (antenna, metalcabinet, screw heads, knobs and control shafts,escutcheon, etc.) and measure the AC voltage dropacross the resistor.All checks must be repeated with the AC cord plugconnection reversed. (If necessary, a nonpolarizedadaptor plug must be used only for the purpose ofcompleting these checks.)Any reading of 0.75 Vrms (this corresponds to 0.5mA rms AC.) or more is excessive and indicates apotential shock hazard which must be correctedbefore returning the monitor to the owner.

IMPORTANT SERVICE SAFETY PRECAUTION Service work should be performed only by qualified service technicians who are thor-

oughly familiar with all safety checks and the servicing guidelines which follow:

DVMAC SCALE

1.5k ohm10W

TO EXPOSEDMETAL PARTS

CONNECT TOKNOWN EARTHGROUND

0.15 FTEST PROBE

3LC-37D40ULC-45D40U

PRECAUTION: POUR LA PROTECTION CONTINUECONTRE LES R ISQUES D ' INCENDIE ,REMPLACER LE FUSIBLE

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AVIS POUR LA SECURITE

De nombreuses pices, lectriques et mcaniques,dans les tlviseur ACL prsentent des caractristiquesspciales relatives la scurit, qui ne sont souventpas videntes vue. Le degr de protection ne peutpas tre ncessairement augmente en utilisant despices de remplacement talonnes pour haute tension,puissance, etc.Les pices de remplacement qui prsentent cescaractristiques sont identifies dans ce manuel; lespices lectriques qui prsentent ces particularits sont

PRECAUTIONS A PRENDRE LORS DE LA REPARATION Ne peut effectuer la rparation qu' un technicien spcialis qui s'est parfaitement

accoutum toute vrification de scurit et aux conseils suivants.

identifies par la marque " " et hachures dans laliste des pices de remplacement et les diagrammesschmatiques.Pour assurer la protection, ces pices doivent treidentiques celles utilises dans le circuit d'origine.L'utilisation de pices qui n'ont pas les mmescaractristiques que les pices recommandes parl'usine, indiques dans ce manuel, peut provoquer deslectrocutions, incendies, radiations X ou autresaccidents.

AVERTISSEMENT

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

2. Dbrancher le rcepteur avant toute rparation.

VERIFICATIONS CONTRE L'INCEN-DIE ETLE CHOC ELECTRIQUE

Avant de rendre le rcepteur l'utilisateur, effectuerles vrifications suivantes.1. Inspecter tous les faisceaux de cbles pour s'assurer

que les fils ne soient pas pincs ou qu'un outil ne soitpas plac entre le chssis et les autres picesmtalliques du rcepteur.

2. Inspecter tous les dispositifs de protection comme lesboutons de commande non-mtalliques, les isolants,le dos du coffret, les couvercles ou blindages de rglageet de compartiment, les rseaux de rsistance-capacit, les isolateurs mcaniques, etc.

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

Brancher le cordon d'alimentation directem-ent uneprise de courant de 120V. (Ne pas utiliser detransformateur d'isolation pour cet essai).

A l'aide de deux fils pinces, brancher une rsistancede 1.5 k 10 watts en parallle avec un condensateur

de 0.15F en srie avec toutes les pices mtalliquesexposes du coffret et une terre connue comme uneconduite lectrique ou une prise de terre branche la terre.

Utiliser un voltmtre CA d'une sensibilit d'au moins5000/V pour mesurer la chute de tension en traversde la rsistance.

Toucher avec la sonde d'essai les pices mtalliquesexposes qui prsentent une voie de retour au chssis(antenne, coffret mtallique, tte des vis, arbres decommande et des boutons, cusson, etc.) et mesurerla chute de tension CA en-travers de la rsistance.Toutes les vrifications doivent tre refaites aprs avoirinvers la fiche du cordon d'alimentation. (Sincessaire, une prise d'adpatation non polarise peuttre utilise dans le but de terminer ces vrifications.)Tous les courants mesurs ne doivent pas dpasser0.5 mA.Dans le cas contraire, il y a une possibilit de choclectrique qui doit tre supprime avant de rendre lercepteur au client.

DVMECHELLE CA

1.5k ohm10W

0.15 FSONDE D'ESSAI

AUX PIECESMETALLIQUESEXPOSEES

BRANCHER A UNETERRE CONNUE

LC-37D40U: F701 (8A, 125V)F4701, F5701 (3A~, 250V, 115C)LC-45D40U: F7801 (8A, 250V)F702, F703 (5A, 125V)F4701, F4703, F5701 (3A~, 250V, 115C)

4LC-37D40ULC-45D40U

Precautions for using lead-free solder1 Employing lead-free solder

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

2 Using lead-free wire solderWhen fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventionallead 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 40C, we recommendyou 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 SolderingAs the melting point of lead-free solder (Sn-Ag-Cu) is about 220C which is higher than the conventional leadsolder by 40C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with thePWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistancetemperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady solderingcondition.Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn onand 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 afterevery 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.

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

Lead-free wire solder for servicingPart No, Description Code

ZHNDAi123250E J 0.3mm 250g(1roll) BLZHNDAi126500E J 0.6mm 500g(1roll) BKZHNDAi12801KE J 1.0mm 1kg(1roll) BM

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

L F a L F a/a

5LC-37D40ULC-45D40U

Specifications

*Emergency alert messages via Cable are unreceivable.

As 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.

LCD panel

Number of dots

TV Function

TV-standard (CCIR)Receiving Channel

VHF/UHFCATVDigital Terrestrial Broadcast (8VSB)

Audio multiplex

Brightness

Viewing angles

Audio out

Terminals Rear INPUT 1INPUT 2

INPUT 3

INPUT 4INPUT 5

ANTENNA

DIGITAL AUDIO OUTPUT

OSD languagePower Requirement

Power Consumption

Weight

Dimension (W x H x D)

Accessories

Operating temperature

3,147,264 dots (1366 x 768 x 3 dots)American TV Standard ATSC/NTSC SystemVHF 2-13ch, UHF 14-69ch1-135ch* (non-scrambled channel only.)2-69ch

BTSC System450cd/m2

H : 176 V : 176

10W x 2

AV in, COMPONENT inAV in, COMPONENT in

S-VIDEO in, AV in

Audio in, HDMI in with HDCPHDMI in with HDCP

OUTPUT Audio out

75 Unbalance, F Type x 1 for Analog (VHF/UHF/CATV) and Digital (AIR/CABLE) Optical Digital audio output x 1 (PCM/Dolby Digital)

English/French/SpanishAC 120 V, 60 Hz

Remote control unit (x1), AC cord (x1), AAA size battery (x2), Cable clamp (x1), Cable tie (x1), Stand unit (x1), Operation manual (x1)+32F to +104F (0C to +40C)

37" Advanced Super View & BLACK TFT LCD

45"Advanced Super View & BLACK TFT LCD

with stand

w/o stand

w/o stand

with stand

186 W 270 W

48.5 lbs./22.0 kg53.8 lbs./24.4 kg

371/4 x 2615/64 x 45/8 inch

371/4 x 2835/64 x 121/64 inch

63.3 lbs./28.7 kg68.8 lbs./31.2 kg

4353/64 x 2957/64 x 431/32 inch

4353/64 x 3163/64 x 121/64 inch

6LC-37D40ULC-45D40U

Operation Manual

Part

nam

es

POW

ER bu

tton

TV (F

ront

)Ch

anne

l but

tons

(C

H/

)

Volu

me

butto

ns (V

OL

/ +

) IN

PUT

butto

n

OPC

indi

cato

r*

POW

ER

indi

cato

r**

OPC

sen

sor*

Rem

ote

cont

rol s

enso

r

NOTE

*O

PC: O

ptica

l Pict

ure

Cont

rol.

**fo

r TV

stat

us in

dica

tor.

INPU

T 4

term

inal

s

INPU

T 3

term

inal

s

AUDI

O O

UTPU

T te

rmin

als

INPU

T 5

term

inal

DIG

ITAL

AUD

IO O

UTPU

T te

rmin

al

Ante

nna/

Cabl

e in

INPU

T 1

term

inal

s

INPU

T 2

term

inal

sAC

INPU

T te

rmin

al

Part

nam

es

TV (R

ear)

7LC-37D40ULC-45D40U

32

114

5 64 8

1715 16 18 19

7

20

109

21

1123 24 25

12 132722 26

Part

nam

es

1 TV

PO

WER

: Swi

tch

the

TV p

ower

on

or e

nter

s st

andb

y m

ode

. 2

DIS

PLAY

: Dis

play

the

chan

nel in

form

atio

n.3

SOUR

CE P

OW

ER: T

urns

the

powe

r of t

he e

xter

nal

equ

ipm

ent o

n an

d of

f.4

Exte

rnal

equ

ipm

ent o

pera

tiona

l but

tons

: Ope

rate

the

ext

erna

l equ

ipm

ent.

5 0

9:

Se

t the

cha

nnel

.6

(D

OT):

7 IN

PUT:

Se

lect a

TV

input

sour

ce. (T

V, IN

PUT 1

, INPU

T 2,

INPU

T 3,

INPU

T 4,

INPU

T 5)

8 VO

L +

/ :

Set t

he v

olum

e.

9 SU

RRO

UND:

Se

lect

Sur

roun

d se

tting

s.

10

FREE

ZE: S

et th

e st

ill im

age.

Pre

ss a

gain

to re

turn

tonorm

al s

cree

n.

11

EXIT

: Tur

n of

f the

men

u sc

reen

.12

SL

EEP:

Se

t the

sle

ep ti

mer

. 13

AU

DIO

: Sel

ects

the

MTS

/SAP

or t

he a

udio

mod

e du

ring

multi

-cha

nnel

aud

io b

road

cast

s.

14

FUNC

TIO

N: Sw

itche

s th

e re

mot

e co

ntro

l for

TV,

CBL

/SA

T, V

CR, D

VD a

nd A

UDIO

ope

ratio

n. In

dicat

or lig

hts u

pfo

r the

cur

rent

mod

e.* T

o en

ter t

he c

ode

regi

stra

tion

mod

e, y

ou n

eed

to p

ress

FUNC

TIO

N and

DIS

PLAY

at t

he s

ame

time.

15

LIG

HT

: W

hen

pres

sed

all b

utto

ns o

n th

e re

mot

e co

ntro

l uni

t will

light

. The

light

ing

will t

urn

off i

f no

ope

ratio

ns a

re p

erfo

rmed

with

in a

bout

5 s

econ

ds. T

his

butto

n is

used

for p

erfo

rmin

g op

erat

ions

in lo

w-lig

htsi

tuat

ions

.16

VI

EW M

ODE

: Sel

ect t

he s

cree

n siz

e.17

EN

T: Ju

mps

to a

cha

nnel

afte

r sel

ectin

g wi

th th

e 0

9 bu

ttons

.18

FL

ASHB

ACK:

R

etur

n to

the

prev

ious

cha

nnel

or i

nput

ext

erna

l mod

e.19

CH

/: Se

lect

the

chan

nel.

20

MUT

E: M

ute

the

soun

d.

21

MEN

U: D

ispl

ay th

e m

enu

scre

en.

22

//

//E

NTE

R: Se

lect

a d

esire

d ite

m o

n th

e sc

reen.

23

RETU

RN: R

etur

n to

the

prev

ious

men

u sc

reen

.24

FA

VORI

TE C

HA

, B, C

, D: S

elec

t fou

r pre

set f

avor

ite c

hann

els

in fo

ur

diffe

rent

cat

egor

ies.

Whi

le w

atch

ing,

you

can

togg

le th

e se

lect

ed c

hann

els

by

pres

sing

A, B

, C a

nd D

25

FAVO

RITE

: Reg

ister

favo

rite

chan

nel.

26

CC: D

ispl

ay c

aptio

ns d

urin

g clo

sed-

capt

ion

sour

ce.

27

AV M

ODE

: Sele

ct an

aud

io or

vide

o se

tting.

(STA

NDAR

D,

MO

VIE,

GAM

E, U

SER,

DYN

AMIC

(Fixe

d), D

YNAM

IC.)

Rem

ote

cont

rol u

nit

NOTE

W

hen

usin

g th

e re

mot

e co

ntro

l uni

t, po

int i

t at t

he T

V.

1.

Conr

mth

e8

scre

ws

supp

liedw

ithth

eTV

.

NOTE

Tode

tach

the

stan

d,pe

rform

the

step

s in

reve

rse

ord

er.

2.

Atta

chth

etw

opa

rtsof t

hest

and

unit

toeach

oth

erusi

ngth

e4

shor

t scr

ew

sand

the

hexk

ey(su

pplie

dwith

the

prod

uct) a

ssh

own.

3. 1

Inse

rtth

est

and

into

the

ope

ning

on

the

botto

mof t

heTV

.2

Inse

rtand

tight

enth

e4

long

scre

ws

into

the

4ho

leso

nth

ere

aro

f the

TV.

Atta

chin

g th

e st

and

Befo

rea

ttach

ing(

orde

tach

ing)

stan

d,u

npl

ugth

eAC

cord

from

the

ACIN

PUTt

erm

inal

.

Befo

repe

rform

ingw

ork

spre

adcu

shio

ning

ove

r the

base

are

ato

layt

heTV

on

.

This

will

prev

entit

from

bein

gda

mag

ed.

Shor

t scr

ews

( x4)

(used

inst

ep2)

Long

scr

ews

( x4)

(used

inst

ep3)

QUIC

K RE

FERE

NCE

Hex

key

Hex

key

Shor

t scr

ew

Soft

cush

ion

Long

scre

w

CAUT

ION

At

tach

the

stan

d in

the

corre

ct d

irect

ion.

Th

e R

EAR

labe

l sho

uld

be v

isibl

e fro

m th

e ba

ck o

f the

TV.

Ref

er to

th

e gu

re.

In

corre

ct in

stal

latio

n of

the

stan

d m

ay re

sult

in th

e TV

fallin

g ov

er.

Be

sur

e to

follo

w th

e in

stru

ctio

ns.

REA

RTh

is sid

e fa

ces

the re

ar.

1

2

8LC-37D40ULC-45D40U

Pict

ure

Setu

p

Aud

io

Opt

ion

Powe

r Con

trol

Digi

tal S

etup

Men

u ite

ms

List

of m

enu

item

s to

hel

p yo

u w

ith o

pera

tions

OPC

Bac

klig

ht

Cont

rast

B

right

ness

Co

lor

Tint

Sh

arpn

ess

A

dvan

ced

Colo

r Tem

p.

Bla

ck

3D-Y

/C

Mon

ochr

ome

Film

Mod

e R

ange

of O

PC

EZ S

etup

CH S

etup

Ant

enna

Set

up-D

IGIT

ALIn

put S

kip

Inpu

t Lab

el

Pare

ntal

CTR

L Po

sitio

n Pi

ctur

e Fl

ip

Stan

dby

Mod

e La

ngua

ge

Res

et

Treb

le

Bas

s B

alan

ce

Surr

ound

Aud

io O

nly

Dig

ital N

oise

Red

uctio

n In

put S

elec

t H

DM

I Set

up

Out

put S

elec

t Qu

ick

Shoo

t Co

lor S

yste

m

Capt

ion

Setu

p Pr

ogra

m T

itle

Disp

lay

Favo

rite

CH

No

Sign

al O

ff N

o O

pera

tion

Off

Aud

io S

etup

9LC-37D40ULC-45D40U

Dimensions

Unit: inch/(mm)

Unit: inch/(mm)

LC-37D40U

LC-45D40U

243/32 (612)

4353/64 (1113) 431/32 (126)

3861/64 (989.1)

3163

/64 (

812)

2957

/64 (

759)

23/3

2 (53

)

1843

/64 (

474)

2159

/64 (

556.

7)

121/64 (305)

43/32 (104)

77/8 (200)

361 /

64 (

100)

77/8

(20

0)

243/32 (612)

121/64 (305)

445/64 (119)371/4 (946)

3225/64 (822.6)

2835

/64 (

725)

2615

/64 (

666)

173 /

32 (

434)

221 /

64 (

59)

45/8 (117)

77/8 (200)

325 /

32 (

96)

77/8

(20

0)

1817

/64 (

463.

8)

10

LC-37D40ULC-45D40U

REMOVING OF MAJOR PARTS(LC-37D40U)1. Remove the SD Card Cover .2. Remove the 4 lock screws 1 and detach the Stand Base Ass'y.3. Remove the 9 lock screws 2, 5 lock screws 3 and detach the Rear Cabinet.

SD-CardCover

RearCabinet

Stand Base Ass'y

2

3

1

11

LC-37D40ULC-45D40U

4. Remove the 3 lock screws 4 and detach the Stand Cover.5. Remove the 6 lock screws 5 and detach the Center Angle-L and R.6. Remove the 2 lock screws 6 and detach the Stand Assist Angle.7. Remove the 4 lock screws 7 and detach the Stand Fix Angle.

Center Angle-R

Center Angle-L

Stand Fix Angle

Stand Cover

Stand Assist Angle

55

7

6

4

12

LC-37D40ULC-45D40U

8 Disconnect the connectors 8 and 9, and detach the Speaker L and R.9. Disconnect the connector CN7502.10. Remove the 5 lock screws 0 and detach the MAIN Shield.

11. Disconnect the connectors, (P2002, P2601, P2602, P2603, P9701, P9702, SC1102, SC1101, SC1301, CN1,CN2, P2703, P502, CN5701, CN5702, CN5703) and Remover the Coaxial Cable.

12. Remove the 2 lock screws q and detach the LED Unit.13. Remove the KEY Unit and Remove the 3 lock screws w from the Top Cover Ass'y

Main Shield

Speaker L

10

8

Speaker R

9

CN7502

Top Cover Ass`y

Key Unit

12

LED Unit

11

P2002

CN1 CN2

P2601P2602

P2603

P9701P9702

P2704SC502

SC501

SC1301SC1102

CN5701 CN5703CN5702

P2703

CoaxialCable SC1101

P502

13

LC-37D40ULC-45D40U

14. Remove the 4 lock screws e and detach the PWB Ass'y.15. Remove the 5 lock screws r and detach the Jack Angle Long.16. Remove the 4 lock screws t and detach the IF Unit.17. Remove the 6 lock screws y and detach the POWER SUPPLY Unit.18. Remove the 4 lock screws u and detach the MAIN Unit.

Jack AngleLong

IF Unit

Tray ChasisLCHSMA286WJFW

POWER SUPPLY Unit

Main Unit 13

15

14

14

17

16

Rug Angle

Center Assist Angle19 19 1918 18

19 1918 18

19. Remove the 4 lock screws i and Remove the 10 lock screws o and detach the Center Assist Angle and RugAngles and LCD Panel Module.

14

LC-37D40ULC-45D40U

(LC-45D40U)1. Remove the SD Card Cover .2. Remove the 4 lock screws 1 and detach the Stand Base Ass'y.3. Remove the 16 lock screws 2, 4 lock screws 3 and detach the Rear Cabinet.

SD-CardCover

RearCabinet

Stand Base Ass'y

2

3

1

15

LC-37D40ULC-45D40U

4. Remove the 4 lock screws 4 and detach the Stand Sub Angle and Stand Bottom Cover.5. Disconnect the Connectors 5 and 6 and Remove the 7 lock screws 7 and detach the 2 Fans.6. Remove the 8 lock screws 8 and detach the Center Angle-L and R.

4

Center Angle-R Center Angle-L

Fan

Fan

Stand Bottom Cover

Stand Sub Angle

7

85

7

8

6

CN5706CN5707

16

LC-37D40ULC-45D40U

7. Disconnect the connectors 9 and 0, and datach the Speaker L and R.8. Remove the 6 lock screws q and detach the MAIN Shield.

Main Shield

11

Speaker L

9

Speaker R

10

Top Cover Ass`y

Key Unit

13

LED Unit

12

CN7502A

CN7501A

CoaxialCable

P2002

P2601P9002P2603

P2602

P9701 P9702

SC1301SC1102

SC1101

P2703

P7802

P502

CN1 CN2

CN5701CN5703

CN7502CCN7510C

CN7501CCN5702

CN701

9. Disconnect the connector (CN7502A, CN7051A, P2002, P2601, P2602, P2603, P9002, P9701, P9702, SC1101,SC1102, SC1301, P2703, P502, CN1, CN2, CN5703, CN5701, CN5702, CN701, P7802,CN7501C, CN7502C,CN7510C) and Remove the Coaxial Cable.

10 Remove the 2 lock screws w and detach the LED Unit.11. Remove the KEY Unit and Remove the 3 lock screws e from the Top Cover Ass'y

17

LC-37D40ULC-45D40U

12. Remove the 4 lock screws r and detach the Stand Fix Angle.13. Remove the 10 lock screws t and detach the PWB Ass'y.14. Remove the 7 lock screws y and u and detach the Jack Angle Long.15. Remove the 10 lock screws i and detach the POWER SUPPLY Unit.16. Remove the 4 lock screws o and detach the AC INLET Unit.17. Remove the 6 lock screws p and detach the IF Unit.18. Remove the 5 lock screws a and detach the MAIN Unit.

Jack AngleLong

IF Unit

Main Unit

20

17

16

16

Stand Fix Angle

14

21

AC INLET Unit

POWER SUPPLY Unit

19

18

15

Tray ChasisAss'y

15

22

22

19. Remove the 5 lock screws s and detach the LCD Panel Unit.

18

LC-37D40ULC-45D40U

ADJUSTMENT PROCEDUREThe adjustment values are set to the optimum conditions at the factory before shipping. If a value shouldbecome improper or an adjustment is required due to part replacement, make an adjustment according to thefollowing procedure.

1. After replacement of any PWB unit and/or IC for repair, please note the following.When replacing the following units, make sure to prepare the new units loaded with updated software.MAIN Unit: DUNTKD640FM06 (LC-37D40U) / DUNTKD640FM07 (LC-45D40U)IF Unit: DUNTKD643FM06 (LC-37D40U) / DUNTKD643FM07 (LC-45D40U)

2.Upgrading of each microprocessor software

Caution: Never "POWER OFF" the unit when software upgrade is ongoing.Otherwise the system may be damaged beyond recovery.

2-1. Software version upgradeThe model employs the following software.

Main software Monitor microprocessor software

The main software and the monitor microprocessor software can be upgraded by using a general-purpose SDmemory card.The followings are the procedures for upgrading, explained separately for each of the main software, themonitor microprocessor software.

2-2 Main software version upgrade

Get ready before you start

SD memory card of 32MB or higher capacity PC running on Windows 98/98SE/ME/2000/XP operating system SD memory card reader/writer with USB connectivity. SD memory card formatting software

(Downloadable at http://panasonic.jp/support/audio/sd/download/sd_formatter_e.html)

19

LC-37D40ULC-45D40U

Preparations

To upgrade the main software, it is necessary to get ready the SD card for version upgrade before you start.Follow the steps below and create the SD card for version upgrade.

1 Insert the SD card into the SD card reader/writer. Start the SD card formatting software. Click [Format].(When you have the drive options, select the drive where the SD card is inserted before you proceed.)

2 When the formatting is over, the following window appears. Click [OK].

3 Click [Exit] to finish the formatting. Note: When you are done, take out the SD card once to make sure it is finished, and then insert it again.

4 Copy the binary image file M150Axxx.SDC (named temporarily) for version updade to the root directory(folder) of the SD card drive.

Note: In the SD card drive, do not store other folders or unrelated files, or more than one binary image files forversion upgrade.Now the SD card for version upgrade is ready.

20

LC-37D40ULC-45D40U

How to upgrade the software

1 Shut off the AC power (i.e. unplug the AC cord).2 Insert the SD card for version upgrade (prepared as above) into the service socket located lower side from

center at terminals, above S-VIDEO terminal in the rear of the unit, in a way that the cut corner of the SDcard comes at the upper side.

Note: If the SD card is inserted in a wrong way, the card will go deep inside the unit beyond retrieval. Takedue care to insert the SD card correctly.

3 Turn on the AC power (i.e. plug in the AC cord).4 After the unit startup, the system upgrade screen as shown below appears within 20-40 seconds.

5 Even a single failure in the process will trigger the upgrade failure screen as shown below. The word"NG" changes to red for the item failed.

Note: In the event of a failure, repeat the upgrading process. If the process repeatedly fails, it is likely that thehardware is troubled.

6 Upon completion of the whole process, the upgrade success screen as shown below appears. You cancheck the new software version on this screen. The version information appears after the upgrade iscomplete.

SYSTEM UPGRADE

Program

EEPROM

12%

Part Init

U0601051 OLD Version

NEW Version U0601241

M150

UPGRADE FAILURE

Program

EEPROM

NG

NG

24%

Part Init

U0601051 OLD Version

NEW Version U0601241

UPGRADE SUCCESS

Program

EEPROM

NG

NG

100%

Part Init

U0601241 Main Version

21

LC-37D40ULC-45D40U

7 Shut off the AC power to the unit (unplug the AC cord), and remove the SD card for version upgrade.8 Now the software version upgrade is complete.

Note: When you are done with the software version upgrade, start the set, go to the top page of the adjustmentprocess screen and check the main software version information.

2-3 Monitor microprocessor software version upgrade

Get ready before you begin

Get ready the same items as listed in the "Main software version upgrade".

Preparation

Create the SD card for monitor microprocessor software version upgrade in the same manner as explained inthe "Main software version upgrade". Copy the binary image file M150Mxxx.SDC (named temporarily) formonitor microprocessor software version upgrade to the SD card drive.

How to upgrade the software

1 Shut off the AC power to the unit (i.e. unplug the AC cord).2 Insert the SD card for version upgrade (prepared as above) into the service socket located lower side from

center at terminals, above S-VIDEO terminal in the rear of the unit, in a way that the cut corner of the SDcard comes at the upper side.

Note: If the SD card is inserted in a wrong way, the card will go deep inside the unit beyond retrieval. Take duecare to insert the SD card correctly.

3 Turn on the AC power (i.e. plug in the AC cord).

Caution!!The moment this operation is done, the upgrading of the monitor microprocessor software starts.While the upgrade is ongoing, never power off the unit. Otherwise the upgrade will fail and thesystem may have a serious damage beyond recovery (inability to start).

4 After the unit startup, the system upgrade screen as shown below appears within 10-30 seconds.

5 A failure in the process will trigger the upgrade failure screen. The word "NG" changes to red for the itemfailed.

Note: In the event of a failure, repeat the upgrading process. If the process repeatedly fails, it is likely that thehardware is troubled.

6 Upon completion of the whole process,the upgrade success screen as shown below appears.You cancheck the new software version on this screen. The version information appears after the upgrade iscomplete.

MONITOR UPGRADE

Program

NG 12%

1.00 OLD Version

NEW Version 1.02

M150

22

LC-37D40ULC-45D40U

2-4. Video signal adjustment procedure1) Image adjustment

(1) Device check Before adjustment, make sure that the adjusting device and signal source are set for the Sharp LCD US. Signal generator level adjustment check (Adjustment to the specified level) Composite signal : 0.714Vp-p 0.02Vp-p (Pedestal to white level) 15K component signal : Y level : 0.714Vp-p 0.02Vp-p (Pedestal to white level)

PB, PR level : 0.7Vp-p 0.02Vp-p 33K component signal : Y level : 0.7Vp-p 0.02Vp-p (Pedestal to white level)

PB, PR level : 0.7Vp-p 0.02Vp-p(2) Entering the adjustment process mode

(3) N358 composite signal / Tuner adjustment

7 Shut off the AC power to the unit (unplug the AC cord), and remove the SD card for version upgrade.8 Now the software version upgrade is complete.

Note: When you are done with the software version upgrade, start the set, go to the top page of the adjustmentprocess screen and check the monitor microprocessor software version information.

UPGRADE SUCCESS

Program

NG 100%

0.98 OLD Version

NEW Version 1.00

Adjustment item Adjustment conditions Adjustment procedure

1 Adjustment N358 signal

US-10ch

2 Auto adjustment Page 3performance

Feed the N358 color bar signal (75% color saturation) to VIDEO 1 input.Feed the RF signal (by use of US-10ch) to TUNER.

Bring the cursor on [N358 ALL ADJ] and press [ENTER].

[N358 ALL ADJ FINISH] appears when finished.

[Video input signal] [US-10CH]

100% white 100% white

75% color saturation


1 Adjustmentprocess mode

Enter the process adjustment mode using the process adjustment remote

control.

23

LC-37D40ULC-45D40U


1 Adjustment 480i signal

2 Auto adjustment Page 5

performance

Feed the 100% color bar signal to VIDEO 1 component input.

Bring the cursor on [COMP 15K MAIN ADJ] and press [ENTER].[COMP 15K MAIN ADJ FINISH] appears when finished.

(4) Component 15K signal adjustment

100% white 0% black

480i100% color bar signal


1 Adjustment 1080i signal

2 Auto adjustment Page 6performance

Feed the 100% color bar signal to VIDEO 1 component input.

Bring the cursor on [HDTV ADJ] and press [ENTER].[HDTV ADJ FINISH] appears when finished.

(5) Component 33K signal adjustment

100% white 0% black

1080i

100% color bar signal

24

LC-37D40ULC-45D40U


1 HDMI EDID 1writing

1. With a checker, write HDMI EDID to IC1501, IC1502 (EEPROM)

mounted on the MAIN PWB.TL1508, 1510: I2C CLK, TL1509, 1511: I2C DATATL1512, 1513: Power5V, TL1518, 1519: GND

TL1534, 1535: Write protection (Low)2. Write date before the HDMI inspection is performed by the checker.

(Otherwise, HDMI will not function.)

2-5. Adjustment of white balance(1) White balance adjustment


1 Adjustment Light level: MAX (+12)(Place a luminancemeter on the centerof the screen.)

2 Auto adjustmentperformance

1.Apply the following settings to the set.AV MODE: [STANDARD]Aging Time: 60 Min.

2.Connect a white balance adjustment jig and the set.3.Use an RS-232C command to display the screen for two-point adjustment.

[Adjustment]Set the specified gradation for point 6, and adjust RGB to the standard values

of point 6.Set the specified gradation for point 1. Set G of point 1 to the default value

[(adjusted G value of point 6) / 944, with fractions rounded] and adjust RBto the standard values of point 1.

Set the specified gradation for point 2. Set G of point 2 to the default value[(adjusted G value of point 6) / 944, with fractions rounded] and adjust RBto the standard values of point 2.




[Adjustment values]Optical measuring machine: [Minolta CA-210] (Focus on the center of thescreen.)Point 1 standard values: x = 0.295, y = 0.305 (200 gradations)Point 2 standard values: x = 0.295, y = 0.305 (264 gradations)Point 3 standard values: x = 0.295, y = 0.305 (464 gradations)Point 4 standard values: x = 0.295, y = 0.305 (576 gradations)Point 5 standard values: x = 0.295, y = 0.305 (800 gradations)Point 6 standard values: x = 0.295, y = 0.305 (944 gradations)

Specified value for adjustment: 0.0020, specified value for inspection:0.0035 (point 1)

Specified value for adjustment: 0.0012, specified value for inspection:0.0020 (other than the above)

Condition when inspecting the unitLight level: MAX (+12)

2-6. Key writing(1) EDID writing (MAIN PWB: HDMI input terminal)

25

LC-37D40ULC-45D40U

(2) Adjustment sequence (adjustment according to the G adjustment value of gradation 6)* Make sure the adjusting point gradations are correct since they are different for each model.

PC SetSet the light level to MAX with the light control command (SBSL0016 for 45).SBSL0008

Setting is complete.OK

Multipoint adjustment mode settingMSET0001

Multipoint adjustment mode is set.OK

Initialize adjustment values.MSET0004

Initialization is done.OK

Adjustment gradation setting (point 6 = 232 gradation adjustment*)LEV0944

Adjust RGB to the target xy values.MG6RXXXXMG6GXXXXMG6BXXXX* XXXX indicates the adjusted values between 0000 and 1023 (4 digit decimal number with zero fill).* In order to adjust by reducing the value, set the strongest color as the fixed color.* The default adjustment value of RGB is the parameter value of the LEV6 command multiplied by 2.

Adjustment values are set.OK



Repeat until RGB become the target values.

Pattern display


Correction of G valueMG5GXXXXWhen G is changed at gradation 6, calculate the ratio of the change and set the following value to XXXX: (the value set with LEV5) x 2 x (the ratio).


Pattern display

The adjustment value is reflected in the image.

26

LC-37D40ULC-45D40U

PC Set

Adjust RB to the target xy values.MG5RXXXXMG5BXXXX* XXXX indicates the adjusted values between 0000 and 1023 (4 digit decimal number with zero fill).* G is fixed.* The default adjustment value of RGB is the parameter value of the LEV5 command multiplied by 2.




Start measurement





Pattern display









Pattern display

Start measurement

27

LC-37D40ULC-45D40U

PC Set









Pattern display

Start measurement









Pattern display

Start measurement

28

LC-37D40ULC-45D40U

PC Set





Writing of adjusted valuesMSET0003

Deletion is complete.OK

Deleting adjustment patternsMSET0000

Writing is complete.OK

Start measurement

Completion of adjustment

2-7. Initialization to factory settingsAfter the shipping setting, pull off the AC cord.Note: Never turn on the power after the shipping setting. If power is turned on, perform the shipping settingagain.


1 Initialization It turns off with AC pow-er supply.

Place the cursor on the [INDUSTRY INIT] row, set "ON" with [+] or [-] of

the [VOL] key, and press the [ENT] key.Version confirmation screen appears.[SUCCESS] on a green line indicates that the setting is successfully

completed.(In case of an error, [ERROR] and an error code appear on a red line.)Turn off the AC power.

1. User setting2. Channel data (e.g. broadcast frequencies)3. Password data

4. Operation time5. Auto installation flag6. V-CHIP block setting

29

LC-37D40ULC-45D40U

2-8. Menu list in process A mode

Page Line Item

1 1 Main Verison Main microcomputer software version

2 BOOT version

3 Monitor Version Monitor microcomputer software version

4 EQ DATA CHECKSUM Sound parameter checksum

5 TEMPERATURE Read value of temperature sensor

6 LAMP ERROR Number of lamp error

7 NORMAL STANDBY CAUSE Reasons of standby at normal time

8 ERROR STANDBY CAUSE Reasons of standby in the event of error

2 1 INDUSTRY INIT(+Cause) Initialization to factory settings (including clearing Standby Cause data)

2 INDUSTRY INIT Initialization to factory settings

3 HOTELMODE Activate/deactivate the hotel mode

4 Center Acutime Main microcomputer operating time

5 RESET Reset main microcomputer operating time

6 Backlight Acutime Backlight lighting time

7 RESET Reset backlight lighting time

8 LAMP ERROR RESET Lamperror reset

9 VIC XPOS x-coordinate for reading image data

10 VIC YPOS y-coordinate for reading image data

11 VIC COLOR Specification of color for reading image data

12 VIC SIGNAL TYPE Specification of signal for reading image data

13 VIC READ On/Off of image data read operation

3 1 N358 ALL ADJ Auto adjustment of NTSC and TUNER signals

2 N358 MAIN ADJ Auto adjustment of NTSC signal

3 TUNER DAC ADJ Auto adjustment of TUNER

4 N358 MAIN CONTRAST NTSC contrast adjustment

5 TUNER A DAC TUNER DAC adjustment

4 1 TUNER VCHIP TEST(69CH) Execute TUNER TEST

2 TUNER VCHIP TEST(7CH)



5 1 COMP15K MAIN ADJ Auto adjustment of component 15k

2 COMP15K CONTRAST Component 15k contrast adjustment

6 1 HDTV ADJ HDTV auto adjustment

2 CONTRAST HDTV contrast adjustment

3 Cb GAIN HDTV CB gain adjustment

4 Cr GAIN HDTV CR gain adjustment

5 HDTV Y OFFSET HDTV Y offset adjustment

6 HDTV Cb OFFSET HDTV CB offset adjustment

7 HDTV Cr OFFSET HDTV CR offset adjustment

30

LC-37D40ULC-45D40U

Page Line Item

7 1 MONITOR GAMMA IN 1 White balance adjustment IN-Point1

2 MONITOR GAMMA IN 2 White balance adjustment IN-Point2





7 GAMMA WRITE Write adjustment values

8 GAMMA RESET Reset adjustment values

8 1 MONITOR GAMMA R 1 White balance adjustment OUT R-Point1

2 MONITOR GAMMA G 1 White balance adjustment OUT G-Point1

3 MONITOR GAMMA B 1 White balance adjustment OUT B-Point1

4 MONITOR GAMMA R 2 White balance adjustment OUT R-Point2








9 1 MONITOR GAMMA R 4 White balance adjustment OUT R-Point4











10 1 AUDIO SELECT Select sound parameter data (ROM/EEP)

2 INPUT_TRIM_SP

3 INPUT_TRIM_HP

4 CLIPPER_LEVEL

5 ANGLE

6 MASTER_VOLUME

7 SCART_PRESCALE

8 FM_AM_PRESCALE

9 I2S1_PRESCALE

10 SCART1_VOLUME

11 SCART1_VOLUME

11 1 AIN1_ADC_VOLUME

31

LC-37D40ULC-45D40U

2 AIN2_ADC_VOLUME

3 AIN3_ADC_VOLUME

4 AIN4_ADC_VOLUME

5 AIN5_ADC_VOLUME

6 AIN6_ADC_VOLUME

12 1 SUB_VOLUME_SURROUND

2 SUB_VOLUME_FLAT

3 SUB_VOLUME_EQ

4 SUB_VOLUME_HP

5 SUB_VOLUME_HP_CENTERSP

6 SUB_VOLUME_CENTERSP_EQ

7 SUB_VOLUME_CENTERSP_FLAT

8 BBE_HF_ADJUST

9 BBE_LEVEL

10 BBE_MACH3_FO

11 BBE_MACH3_Q

12 BBE_MACH3_GAIN

13 1 EQ_MODE

2 PEQ1_FO

3 PEQ1_Q

4 PEQ1_GAIN

5 PEQ2_FO

6 PEQ2_Q

7 PEQ2_GAIN

8 PEQ3_FO

9 PEQ3_Q

10 PEQ3_GAIN

11 PEQ4_FO

12 PEQ4_Q

13 PEQ4_GAIN

14 1 PEQ5_FO

2 PEQ5_Q

3 PEQ5_GAIN

4 EALA_GAIN

15 1 BRIGHTNESS DA0

2 BRIGHTNESS DA1

3 BRIGHTNESS DA2

4 BRIGHTNESS DA3

5 BRIGHTNESS DA4

6 BRIGHTNESS DA5

7 BRIGHTNESS DA6

8 BRIGHTNESS DA7

9 BRIGHTNESS DA8

Page Line Item

32

LC-37D40ULC-45D40U

15 10 BRIGHTNESS DA9

11 BRIGHTNESS DA10

12 BRIGHTNESS DA11


2 BRIGHTNESS DA13

3 BRIGHTNESS DA14

4 BRIGHTNESS DA15

5 BRIGHTNESS DA16

6 BRIGHTNESS DA17

7 BRIGHTNESS DA18

8 BRIGHTNESS DA19

9 BRIGHTNESS DA20

10 BRIGHTNESS DA21

11 BRIGHTNESS DA22


2 BRIGHTNESS DA24

3 BRIGHTNESS DA25

4 BRIGHTNESS DA26

5 BRIGHTNESS DA27

6 BRIGHTNESS DA28

7 BRIGHTNESS DA29

8 BRIGHTNESS DA30

9 BRIGHTNESS DA31

10 BRIGHTNESS DA32

18 1 OPC33 ADLEVEL0

2 OPC33 ADLEVEL1

3 OPC33 ADLEVEL2

4 OPC33 ADLEVEL3

5 OPC33 ADLEVEL4

6 OPC33 ADLEVEL5

7 OPC33 ADLEVEL6

8 OPC33 ADLEVEL7

9 OPC33 ADLEVEL8

10 OPC33 ADLEVEL9

11 OPC33 ADLEVEL10

12 OPC33 ADLEVEL11

19 1 OPC33 ADLEVEL12

2 OPC33 ADLEVEL13

3 OPC33 ADLEVEL14

4 OPC33 ADLEVEL15

5 OPC33 ADLEVEL16

6 OPC33 ADLEVEL17

Page Line Item

33

LC-37D40ULC-45D40U


8 OPC33 ADLEVEL19

9 OPC33 ADLEVEL20

10 OPC33 ADLEVEL21

11 OPC33 ADLEVEL22


2 OPC33 ADLEVEL24

3 OPC33 ADLEVEL25

4 OPC33 ADLEVEL26

5 OPC33 ADLEVEL27

6 OPC33 ADLEVEL28

7 OPC33 ADLEVEL29

8 OPC33 ADLEVEL30

9 OPC33 ADLEVEL31

21 1 V6 OS THERMO 1

2 V6 OS THERMO 2

3 V6 OS THERMO 3

4 V6 OS THERMO 4

5 V6 OS THERMO 5

6 V6 OS THERMO 6

7 V6 OS THERMO 7

22 1 V5 OS THERMO 1

2 V5 OS THERMO 2

3 V5 OS THERMO 3

4 V5 OS THERMO 4

5 V5 OS THERMO 5

6 V5 OS THERMO 6

7 V5 OS THERMO 7

23 1 MONITOR TIME OUT

2 MONITOR MAX TEMP

3 MONITOR STANDBY CAUSE

24 1 LCD TEST PATTERN

25 1 KEY LOCK (1217)

2 KOUTEI AREA ALL CLEAR

3 A MODE AREA CLEAR

4 BACKUP AREA CLEAR

5 B MODE AREA CLEAR

6 EXECUTION

26 1 EEP SAVE

2 EEP RECOVER

3 STANDBY CAUSE RESET

Page Line Item

34

LC-37D40ULC-45D40U

2-9. Code list for Standby Cause

Code Indication Description

1 RC_STNBY /* Standby set by remote control */

2 E_CCKMVT /* Abnormal voltage of CCKM line detected */

5 OUT_OF_R "/* While a PC display is on, unspecified input continued long time. */"

6 NO_OPERT /* Off caused by no operation */

7 NO_SIGNA /* Off caused by no signal */

8 PC_MODE1 /* Set by the PC power management mode 1 */

9 PC_MODE2 /* Set by the PC power management mode 2 */

A SLEEP_TM /* Set by off timer */

B E_NOMONI /* Incompatible monitor is connected to the AVC center. */

C OFF_232C /* Set by the command from RS232C */

E AVC_TACT /* Set by the front switch at the AVC center */

F BSBOOKED /* The pre-set time has passed since TV was turned on from standby by the BS timer. */

10 E_AVCFAN /* Fan failure at the AVC center */

11 E_BSSUBM /* Communication failure with the BS sub microcomputer (Not used) */

12 E_CVICIC /* CVIC failure */

13 E_AVCTMP /* Abnormal temperature at the AVC center */

14 E_1BITAU /* 1Bit-AMP failure */

15 E_MONIPW /* Monitor main power failure detected */

16 E_MONITR /* Monitor problem detected */

17 E_FNLOCK /* Fan lock for North America */

40 /* Failure in Digital Standby */

35

LC-37D40ULC-45D40U

TROUBLESHOOTING TABLE

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

YES

MO

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hH

igh

5V6V

10V

13V

5V24

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Are

UR6V

/UR1

0V/U

R13V

sup

plie

d?D

oes

PS_O

N (pi

n 1 0

f CN5

702)

beco

me H

igh (a

pprox

. 3.3V

)?

Chec

k th

e re

gula

tor c

ircui

t of U

R6V,

rect

ifier c

ircui

t of U

R13V

and

DC/

DC c

ircui

tof U

R10V

.

Is th

e un

it se

t to

STAN

DBY

MO

DE2?

Is th

e m

ain

unit

norm

al?

Is 2

4V s

uppl

ied?

Do

the

prim

ary

side

and

seco

ndar

y sid

e of

T47

01 o

scilla

te n

orm

ally?

Are

D47

05/D

4706

out

of o

rder

?Ar

e th

ere

defe

ctive

par

ts o

nth

e pr

imar

y sid

e? Is

the

outp

uto

n th

e se

cond

ary

side

shor

t-circ

uite

d?

Is P

NL5

V su

pplie

d?D

oes

PNL_

POW

(pin

4 of C

N570

2) be

come

High

(app

rox. 3

.3V)?

Chec

k th

e DC

/DC

circu

it of

PNL

5V?

Is th

e m

ain

unit

norm

al?

24V

(CN5

7031

)

Turn

on

the

powe

r aga

in, a

nd c

heck

if th

e un

it wo

rks

norm

ally.

PS_O

N(C

N570

21)

PNL_

POW

(CN5

7024

)BU

5V(C

N570

25)

UR6V

CN57

011

)

Pow

er O

N

State

of th

e set

STDB

Y

UR10

VCN

5701

7)

UR13

VCN

5701

q)

PNL5

V(C

N570

13)

Is th

e vo

ltage

of C

4701

/C47

02/C

4703

app

rox.

160V

?

Rem

arks

36

LC-37D40ULC-45D40U

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

YES

YES

MO

DE1

Hig

hH

igh

5V6V

10V

13V

5V24

VM

ODE

2Lo

wLo

w5V

--

--

-

Hig

hH

igh

5V6V

10V

13V

5V24

V

No

powe

r sup

ply

(Fron

t LED

does

not li

ght u

p) an

d no p

ower-

up ev

en is

turne

d on (

Fron

t LED

light

up to

gree

n)

Is th

e AC

cor

d co

nnec

ted?

Conn

ect t

he A

C co

rd a

nd tu

rn o

n th

e po

wer.

Are

the

harn

ess

and

FFC

conn

ecte

d pr

oper

ly?Co

nnec

t the

har

ness

and

FFC

pro

perly

.

Are

F780

1, F

702

and

F703

nor

mal

?If

the

fuse

is b

lown

whe

n tu

rnin

g on

the

powe

r afte

r rep

lacin

gF7

801/

F702

/F70

3, re

plac

e VA

7802

, VZ7

03/D

S470

1/DS

4702

,F4

701/

F470

2/F4

703/

F470

4, F

5701

, Q47

01/Q

4702

/Q47

03/Q

4704

, Q57

01,

IC47

01/IC

4704

and

IC57

01, t

hen

rech

eck.

Chec

k if

VA78

01, R

7803

, DS4

701/

DS47

02 a

nd T

H70

1 a

re n

orm

al.

Is B

U5V

supp

lied?

Do

the

prim

ary

side

and

seco

ndar

y sid

e of

T57

01 o

scilla

te n

orm

ally?

Are

F570

2, D

5705

, IC5

706

and

D571

7 ou

to

f ord

er?

Are

ther

e de

fect

ive p

arts

on

the

prim

ary

side?

Is th

e ou

tput

on

the

seco

ndar

y sid

e sh

ort-c

ircui

ted?

Are

UR6V

/UR1

0V/U

R13V

sup

plie

d?D

oes

PS_O

N (pi

n 1 0f

CN5

702)

beco

me H

igh (a

pprox

. 3.3V

)?

Chec

k th

e re

gula

tor c

ircui

t of U

R6V,

rect

ifier c

ircui

t of U

R13V

and

DC/

DC c

ircui

to

f UR1

0V.

Is th

e un

it se

t to

STAN

DBY

MO

DE2?

Is th

e m

ain

unit

no

rma

l?

Is 2

4V s

uppl

ied?

Do

the

prim

ary

side

and

seco

ndar

y sid

e of

T47

01/T

4702

osc

illate

nor

mal

ly?

Are

D47

05/D

4706

and

D47

15/D

4716

out

of

ord

er?

Are

ther

e de

fect

ive p

arts

on

the

prim

ary

side?

Is th

e ou

tput

on

the

seco

ndar

y sid

e sh

ort-c

ircui

ted?

Is P

NL5

V su

pplie

d?D

oes

PNL_

POW

(pin

4 o

f CN5

702)

beco

me H

igh (a

pprox

. 3.3V

)?

Chec

k th

e DC

/DC

circu

it of

PNL

5V?

Is th

e m

ain

unit

norm

al?

24V-

a(C

N570

33 )

Turn

on

the

powe

r aga

in, a

nd c

heck

if th

e un

it wo

rks

norm

ally.

PS_O

N(C

N570

21)

PNL_

POW

(CN5

7024

)BU

5V(C

N570

25)

UR6V

CN57

011

)

Pow

er O

N24

V

24V-

b(C

N570

36)

State

of th

e set

STDB

Y24

V-

UR10

VCN

5701

7)

UR13

VCN

5701

q)

PNL5

V(C

N570

13)

Is th

e vo

ltage

of C

4701

/C47

02/C

4731

/C47

32/C

5701

app

rox.

160V

?

Rem

arks

37

LC-37D40ULC-45D40U

TROUBLESHOOTING TABLE (Continued)N

o au

dio

outp

ut d

urin

g UH

F/VH

F re

cept

ion

No

audi

o ou

tput

from

ext

erna

l inp

ut

Is S

IF o

utpu

t fro

m th

e tu

ner (

TU11

01_P

in3)

norm

al?

Chec

k th

e tu

ner a

nd p

erip

hera

l circ

uits

.IN

PUT-

1Is

L-c

h au

dio

signa

l fed

from

pin

12

of in

put t

erm

inal

J50

1 to

pin

53

of IC

1403

?Is

R-c

h au

dio

signa

l fed

from

pin

18

of in

put t

erm

inal

J50

1 to

pin

54

of IC

1403

?IN

PUT-

2Is

L-c

h au

dio

signa

l fed

from

pin

12

of in

put t

erm

inal

J50

2 to

pin

55

of IC

1403

?Is

R-c

h au

dio

signa

l fed

from

pin

18

of in

put t

erm

inal

J50

2 to

pin

56

of IC

1403

?IN

PUT-

3Is

L-c

h au

dio

signa

l fed

from

pin

10

of in

put t

erm

inal

J50

1 to

pin

57

of IC

1403

?Is

R-c

h au

dio

signa

l fed

from

pin

16

of in

put t

erm

inal

J50

1 to

pin

58

of IC

1403

?H

DM

IIs

dig

ital a

udio

sig

nal (H

DMI_S

PDIF)

fed f

rom pi

n 70 o

f IC15

08 to

pin 2

of IC

1401

?(A

nalog

audio

mod

e)Is

L-c

h au

dio

signa

l fed

from

pin

3 o

f inp

ut te

rmin

al J

1501

to p

in 5

9 of

IC14

03?

Is R

-ch

audi

o sig

nal f

ed fr

om p

in 2

of i

nput

term

inal

J15

01 to

pin

60

of IC

1403

?Ch

eck

IC14

03 a

nd p

erip

hera

l circ

uits

.

No

audi

o ou

tput

dur

ing

digi

tal b

road

cast

ing

rece

ptio

nIs

aud

io o

utpu

t fro

m IC

2701

nor

mal

?Ch

eck

IC27

01 a

nd p

erip

hera

l circ

uits

.

Is th

e sp

eake

r swi

tchi

ng c

ircui

t (T27

01) N

o m

onito

r aud

io o

utpu

t

Is m

onito

r aud

io o

utpu

t set

to "V

aria

ble"

?R

eset

mon

itor a

udio

out

put t

o "F

ixed"

.

Is in

put s

igna

l fed

to p

in 2

1 (S

OUND

IF 1)

ofIC

1401

(SIF

Demo

dulat

or) no

rmal?

Chec

k th

e filt

er c

ircui

ts (Q

1144

and Q

1102

-3)and

perip

hera

l circ

uits

.

Are

audi

o sig

nals

from

pin

s 29

and

30

(SC2

_OUT

L/R) o

f IC14

01 to

pins

51 an

d 52

of I

C140

3(C

ODEC

) norm

al?

Chec

k be

twee

n pi

ns 2

9 an

d 30

(SC2

_OUT

L/R) o

f IC14

01 an

d pins

51 an

d 52

of I

C140

3 (C

ODEC

).

Are

audi

o ou

tput

s (A

-OUT

_L/R

) of p

ins 38

and

39 o

f IC1

403

norm

al?

Are

the

LRCK

, BIC

K, S

DTO

and

SDT

I sig

nals

sent f

rom

IC14

03 to

IC14

06 (D

SP) n

ormall

y?

Is a

udio

inpu

t fro

m p

ins

38 a

nd 3

9 of

IC14

03to

pin

s 11

and

15

of IC

2701

(STE

REO_

AMP)

norm

al?

Chec

k th

e cir

cuits

bet

ween

pin

s 38

and

39

ofIC

1403

and

pin

s 11

and

15

of IC

2701

. (MUT

Eci

rcui

ts: Q

1306

-8)

Are

the

I2S

signa

ls M

CLK,

SCL

K, L

RCK,

and

DAT

A se

nt fr

om p

ins

N22,

N19

, N21

and

M20

of I

C810

1 (P

H1) n

ormall

y?Ch

eck

arou

nd IC

8101

PH1

.

Chec

k th

e co

nnec

tor (

P270

3) of

AV_U

NIT

and

arou

nd th

e sp

eake

rs.

Are

inpu

t sig

nals

of p

ins

24 (M

CLK)

, 11 (

SCL

K), 1

0 (LR

CK), 3

2 (DA

TA) o

f IC14

03norm

al?

Chec

k th

e cir

cuits

bet

ween

pin

s N2

2, N

19,

N21

and

M20

of I

C810

1 PH

1 an

d pi

ns 2

4, 1

1,10

and

32

of IC

1403

.

Are

audi

o ou

tput

pin

s 40

and

41

of IC

1403

(COD

EC) n

ormal?

Chec

k IC

1403

and

per

iphe

ral c

ircui

ts.

Are

audi

o ou

tput

pin

s 7

and

1 of

IC14

07(B

uffer_

AMP)

norm

al?Ch

eck

IC14

07 a

nd p

erip

hera

l circ

uits

.

Chec

k be

twee

n IC

1407

and

MO

NITO

RO

UTPU

T te

rmin

al (p

ins 10

and 1

6 of J

502).

YES

YES

YES

YES

YES

YES

NO

NO

YES

YES

YES

YES

YES

YES

YES

NO

NO

NO

NO

NO

NO

NO

NO

NO

YES

38

LC-37D40ULC-45D40U

TROUBLESHOOTING TABLE (Continued)N

o vi

deo

outp

ut (1

)

No vi

deo o

utput

from

exter

nal in

put

INPU

T-1

No vi

deo o

utput

from

exter

nal in

put

INPU

T-2

Is IN

PUT-

1 se

lect

ed o

n th

e in

put s

witc

hing

me

nu

scr

ee

n?

Whe

n IN

PUT-

1 ca

nnot

be

sele

cted

sin

ceth

e ch

arac

ters

INPU

T-1

on th

e m

enu

scre

en

are

gra

y.

Is IN

PUT-

2 se

lect

ed o

n th

e in

put s

witc

hing

me

nu

scr

ee

n?

Whe

n IN

PUT-

2 ca

nnot

be

sele

cted

sin

ceth

e ch

arac

ters

INPU

T-2

on th

e m

enu

scre

en

are

gra

y.

Is th

e vi

deo

signa

l det

ectio

n fu

nctio

nn

orm

al?

Chec

k be

twee

n pi

n 5

of J

501

and

pin

70o

f IC5

01.

Is th

e vi

deo

signa

l det

ectio

n fu

nctio

nn

orm

al?

Chec

k be

twee

n pi

n 5

of J

502

and

pin

76o

f IC5

01.

Is v

ideo

sig

nal f

ed to

pin

65

of IC

501

(AV

SWIT

CH)?

Chec

k be

twee

n pi

n 4

of J

501

and

pin

65o

f IC5

01.

Is v

ideo

sig

nal f

ed to

pin

71

of IC

501

(AV

SWIT

CH)?

Chec

k be

twee

n pi

n 4

of J

502

and

pin

71o

f IC5

01.

Is v

ideo

sig

nal s

ent t

o pi

n 60

of I

C501

?Ch

eck

IC50

1 (A

V SW

ITCH)

and

perip

hera

l circ

uits

.

Is v

ideo

sig

nal s

ent t

o pi

n 2

of IF

_UNI

T co

nnec

tor (

FC_S

C501

)?Ch

eck

betw

een

IC50

1 an

d SC

501.

(Q50

1, Q5

02, e

tc.)

Is v

ideo

sig

nal f

ed to

pin

2 o

f MAI

N_UN

IT c

onne

ctor

(FC_

SC11

01)?

Chec

k th

e bo

ard-

to-b

oard

cab

le "F

C".

Is v

ideo

sig

nal f

ed to

pin

242

of I

C330

1 (T

riden

t) via

L.P.F.

comp

osed

of Q

2201

and Q

2207

?Ch

eck

betw

een

IC50

1 an

d IC

3301

.(Q

2201

, Q22

07, e

tc.)

Are

digi

tal v

ideo

(LVD

S) si

gnals

sent

from

pins 2

8-31 a

nd 34

-37 of

IC33

01?

Chec

k IC

3301

and

per

iphe

ral c

ircui

ts.

Chec

k LC

D_CO

NTRO

L PW

B.

Sele

ct IN

PUT-

1 an

d th

e in

put s

igna

l on

the

inpu

t swi

tchi

ng m

enu

scre

en.

Sele

ct IN

PUT-

2 an

d th

e in

put s

igna

l on

the

inpu

t swi

tchi

ng m

enu

scre

en.

YES

NO

NO

YES

YES

YES

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

39

LC-37D40ULC-45D40U

TROUBLESHOOTING TABLE (Continued)

No

vide

o ou

tput

(2)

No

vide

o ou

tput

dur

ing

digi

tal b

road

cast

ing

rece

ptio

n

No vi

deo

outp

ut fr

om e

xtern

al inp

ut I

NPU

T-3

Is

vid

eo s

igna

l sen

t to

pin

60 o

f IC5

01?

A

re Y

and

C s

igna

ls se

nt to

pin

s 60

and

59

of IC

501

resp

ectiv

ely?

Is

vid

eo s

igna

l sen

t to

pin

2 of

IF_U

NIT

conn

ecto

r (FC

_SC5

01)?

A

re Y

and

C s

igna

ls se

nt to

pin

s 2

and

4 of

IF_U

NIT

conn

ecto

r (FC

_SC5

01) r

espe

ctive

ly?

Is

vid

eo s

igna

l fed

to p

in 2

of M

AIN_

UNIT

con

nect

or (F

C_SC

1101

)?S-

vide

o si

gnal

inpu

t> A

re Y

and

C s

igna

ls fe

d to

pin

s 2

and

4 of

MAI

N_UN

IT c

onne

ctor

(FD_

SC11

01) r

espe

ctive

ly?

Is

vid

eo s

igna

l fed

to p

in 2

42 o

f IC3

301(T

riden

t) via

L.P.F.

comp

osed

of Q

2201

and Q

2207

?

Are

digi

tal v

ideo

(LVD

S) si

gnals

sent

from

pins 2

8-31 a

nd 34

-37 of

IC33

01?

Che

ck IC

3301

and

per

iphe

ral c

ircui

ts.

Che

ck L

CD

_CO

NTR

OL

PWB.

Is IN

PUT-

3 se

lect

ed o

n th

e in

put s

witc

hing

me

nu

scr

ee

n?

Che

ck IC

501

(AV

SWITC

H) an

dpe

riphe

ral c

ircui

ts.

Is c

ontro

l sig

nal f

or le

vel a

djustm

ent fe

dfro

m p

in 1

of I

C11

04 to

pin

6 o

f IC

1103

?

Is th

e vi

deo

sign

al d

etec

tion

func

tion

no

rma

l?Ch

eck b

etwe

en p

in 2

of J5

01an

d pin

2 o

f IC5

01.

Sele

ct IN

PUT-

3 an

d th

e in

put s

igna

l on

the

inpu

t sw

itchi

ng m

enu

scre

en.

Che

ck o

r rep

lace

IC11

04 (C

ONTR

OL) a

ndpe

riphe

ral c

ircui

ts.

Che

ck b

etw

een

pins

3 a

nd 4

of J

503

and

pins

5 a

nd 7

of I

C50

1.

Che

ck b

etw

een

SC11

01an

d IC

3301

.(Q

2201

, Q22

07, e

tc.)/

(Q22

05, Q

2209

, etc.

)

Are

Y a

nd C

sig

nals

fed

to p

ins

242

and

231

of IC

3301

(Trid

ent) v

ia L.P

.F. co

mpos

ed of

Q22

01 an

d Q22

07 an

d vi

a L.

P.F.

com

pose

d of

Q22

05 a

nd Q

2209

resp

ectiv

ely?

Che

ck b

etw

een

IC50

1 an

d SC

501.

(Q50

1, Q5

02, Q

503,

Q504

, etc.

)

Che

ck th

e bo

ard-

to-b

oard

cab

le "F

C".

Is th

e S-

vide

o si

gnal

det

ectio

n fu

nctio

nn

orm

al?

Chec

k bet

ween

pin

6 of

J503

and

pin

6 of

IC50

1.

Che

ck b

etw

een

IC11

03 a

nd IC

3301

.(Q

2204

,Q22

08, e

tc.)

Che

ck b

etw

een

pin

1 of

J50

1 an

d pi

n 3

ofIC

501.

Is v

ideo

sig

nal s

ent t

o ou

tput

term

inal

pin

4 of

tune

r (TU

1101

)?C

heck

or r

epla

ce th

e tu

ner's

per

iphe

ral

circ

uits

.W

hen

INPU

T-3

cann

ot b

e se

lect

ed s

ince

the

char

acte

rs IN

PUT-

3 on

the

men

u sc

ree

n a

re g

ray.

Is v

ideo

sig

nal f

ed to

pin

7 o

f IC1

103

(LEVE

L ADJ

)?

Is v

ideo

sig

nal f

ed to

pin

244

of I

C330

1 (T

riden

t) via

L.P.F.

comp

osed

of Q

2204

and Q

2208

?

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

Is s

igna

l fed

to e

ach

inpu

t ter

min

al o

fIC

501

(AV

SWITC

H)?

Is

vid

eo s

igna

l fed

to p

in 3

of I

C501

?

Ar

e Y

and

C s

igna

ls fe

d to

pin

s 5

and

7 of

IC50

1 re

spec

tivel

y?

40

LC-37D40ULC-45D40U

TROUBLESHOOTING TABLE (Continued)

No

vide

o ou

tput

(3)

No vi

deo o

utput

from

exter

nal in

put

INPU

T-1

No vi

deo o

utput

from

exter

nal in

put

INPU

T-2

Is IN

PUT-

1 se

lect

ed o

n th

e in

put s

witc

hing

menu s

creen?

Sele

ct IN

PUT-

1 an

d th

e in

put s

igna

l on

the

inpu

t swi

tchi

ng m

enu

scre

en.

Is IN

PUT-

2 se

lect

ed o

n th

e in

put s

witc

hing

menu s

creen?

Sele

ct IN

PUT-

2 an

d th

e in

put s

igna

l on

the

inpu

t swi

tchi

ng m

enu

scre

en.

Whe

n IN

PUT-

1 ca

nnot

be

sele

cted

sin

ceth

e ch

arac

ters

INPU

T-1

on th

e m

enu

scre

en a

re g

ray.

Whe

n IN

PUT-

2 ca

nnot

be

sele

cted

sin

ceth

e ch

arac

ters

INPU

T-2

on th

e m

enu

scre

en a

re g

ray.

Is th

e co

mpo

nent

vid

eo s

igna

l det

ectio

nfu

nctio

n no

rmal

? C

heck

bet

ween

pin

8 o

fJ5

01 a

nd p

in 3

8 of

IC50

1.

Is th

e co

mpo

nent

vid

eo s

igna

l det

ectio

nfu

nctio

n no

rmal

? C

heck

bet

ween

pin

7 o

fJ5

02 a

nd p

in 4

0 of

IC50

1 (A

V SW

ITCH)

.

Are

com

pone

nt v

ideo

sig

nals

fed

to p

ins

21, 2

3 an

d 25

(Y, P

B an

d PR)

ofIC

501(A

V SW

ITCH)

?Ch

eck

betw

een

J150

1 an

d ea

ch in

put p

inof I

C501

.Ar

e co

mpo

nent

vid

eo s

igna

ls fe

d to

pin

s27

, 29

and

31

(Y, P

B an

d PR)

of IC

502

(AV

SWITC

H)?

Chec

k bet

ween

J502

and

eac

h inp

ut p

in of

IC50

1.

Are

Y, P

B an

d PR

sig

nals

sent

to p

ins

60, 5

9 an

d 58

of I

C501

resp

ectiv

ely?

Chec

k IC

501

and

perip

hera

l circ

uits

.

Are

com

pone

nt v

ideo

sig

nals

sent

to p

ins

2, 4

and

6 o

f IF_

UNIT

con

nect

or (F

C_SC

501)?

Chec

k be

twee

n IC

501

and

SC50

1.(Q

501-Q

506,

etc.)

Are

com

pone

nt v

ideo

sig

nals

fed

to p

ins

2, 4

sharp lc37d40u 45d40u sm

Documents

major parts

safety regulations

parts identical

overall wiring diagram

schematic diagram

parts list

system block diagram

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