Sharp LC-32LE250M Schematic

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1st Addition

SERVICE MANUAL

No.SZ12M1032LE250M

LCD COLOUR TELEVISION

MODEL : LC-32LE250M

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

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY

PRECAUTION................................................i

PRECAUTION FOR USING LEAD-FREE

SOLDER.........................................................ii

CHAPTER 1. OUTLINE

[1] OUTLINE...........................................1-1

CHAPTER 2. SPECIFICATIONS

[1] SPECIFICATION.................................2-1

CHAPTER 3.OPERATION MANUAL

[1] OPERATION MANUAL........................3-1

CHAPTER 4. DIMENSIONS

[1] DIMENSIONS......................................4-1

CHAPTER 6. ADJUSTMENT

[1] ADJUSTMENT....................................6-1

CHAPTER 7. TROUBLESHOOTING TABLE

[1] TROUBLESHOOTING TABLE .........................7-1

CHAPTER 8. OVERALL WIRING/BLOCK DIAGRAM

[1] SYSTEM BLOCK DIAGRAM............................8-1

CHAPTER 9. PRINTED WIRING BOARD ASSEM­BLIES

[1] Main Unit .............................................9-1

CHAPTER 10. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC

DIAGRAM ...........................................10-1

CHAPTER 5. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS...........5-1

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

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

LC-32LE250M

SAFETY PRECAUTION

SAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PR ECAUTION



LC32LE240M

IMPORTANT SERVICE SAFETY PRECAUTION

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

5GTXKEG/CPWCN

WARNING

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

2. Disconnect AC power before servicing.

BEFORE RETURNING THE RECEIVER (Fire &

All checks must be repeated with the AC cord plug connection
reversed. (If necessary, a nonpolarized adaptor plug must be used
only fo r the purpose of completing these checks.)

Any reading of 0.74 Vrms (this corresponds to 0.5 mA rms AC.) or
more is excessive and indicates a potential shock hazard which
must be corrected before returning the monitor to the owner.

Shock Hazard)

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

3. 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.

4. 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.

5. 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.

• Using two clip leads, connect a 1.5k ohm, 10 watt resistor paral­leled by a 0.15 F 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.

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

TO EXPOSED
METAL PARTS

DVM

AC SCALE

1.5k ohm
10W

0.15µF

TEST PROBE

CONNECT TO
KNOWN EARTH
GROUND

SAFETY NOTICE

Many electrical and mechanical parts in LCD colour television have
special safety-related characteristics.

These characteristics are often not evident from visual inspection, nor
can pr otection 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 components having such features

are identified by " " and shaded areas in the Replacement Parts List
and 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.

i

LC-32LE250M

PRECAUTIONS FOR USING LEAD-FREE SOLDER

Employing lead-free solder

• “PWBs” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs an d service manuals. The
alphabetical character following LF shows the type of lead-free solder.

Example:

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

Using lead-free wire solder

• When fixing the PWB solder ed 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.

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 kee p 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

PARTS CODE

ZHNDAi123250E BL J 0.3mm 250g (1roll)
ZHNDAi126500E BK J 0.6mm 500g (1roll)
ZHNDAi12801KE BM J 1.0mm 1kg (1roll)

PRICE
RANK

PART

DELIVERY

DESCRIPTION

ii

LC-32LE250M

CHAPTER 1. OUTLINE

[1] OUTLINE

MAJOR SERVICE PARTS

PWB UNIT

Ref No. Part No. Description

N DKEYMG247FM01 MAIN Unit
N

N

N DUNTKG238FM01 LED IR Unit
N LED PWB A

N

DKEYMG247FM02
RDENCA462WJPZ

RUNTKB129WJZZ

RUNTKB130WJZZ

MAIN Unit
POWER Unit

LED PWB B

( ASIA )

(SPC)

OTHER UNIT

Ref No. Part No. Description

N R1LK315T3HB60W 32-INCH Panel Hiraki

IC FOR EXCLUSIVE USE OF THE SERVICE

Ref No. Part No. Description Q'ty

IC3104 RH-iXD606WJQZQ Flash IC 1

IC3104

RH-iXD614WJQZQ

Flash IC

( ASIA )

( SPC )

SERVICE JIGS

Ref No. Part No. Description Q’ty

N QCNW-N120WJQZ RA WIRE ( Main -IR board ) 1
N QCNW-N177WJPZ Extension Cable, LVDS FFC (Main-Panel Controller) 1
N
N

QCNW-N179WJQZ

QCNW-N180WJQZ

PD WIRE ( Main -Power Unit )

LED BL wire ( Main-Panel BL )

1

1

1

1 – 1

CHAPTER 2. SPECIFICATIONS

[1] SPECIFICATIONS

Specifications

LC-32LE250M

Item

LCD panel

Resolution

Video Colour System PAL/SECAM/NTSC 3.58/NTSC 4.43/PAL 60

TV
Function

Audio amplifier/Speakers

Terminals Antenna input

USB device/File system USB Memory / FAT/FAT32

Photo file format JPEG (.jpg) (DCF2.0 compliant). Progressive format jpeg files are not supported.

Music file format
(Files may not be playable
depending on the bitrate)

Power Requirement AC 110—240 V, 50/60 Hz

Power Consumption 53 W (0.8 W Stand by)

Dimensions

Operating Temperature 0°C — 40°C

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

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

TV-Standard PAL: B/G, D/K, I SECAM: B/G, D/K, K/K

Receiving
Channel

TV-Tuning System Auto Preset 99 ch

STEREO/BILINGUAL NICAM: B/G, I, D/K A2 stereo: B/G

INPUT 1 HDMI (HDMI input), AUDIO in (

INPUT 2 VIDEO in, AUDIO in, COMPONENT in

INPUT 3 VIDEO in, AUDIO in

OUTPUT AUDIO out, Headphone (

Model

VHF/UHF 43.25—863.25 MHz

CATV

without stand

with stand

LC-32LE250M

80cm

1,049,088 pixels (1366 g 768)

1

NTSC: M

S1—S41ch (including Hyperband)

º671:Vº671:HselgnagniweiV

10 Wg 2 / 4 g 10 cm 2pcs

UHF/VHF 75 q DIN type

3.5 mm jack), PC input

3.5 mm stereo)

MP3 (.mp3) Bitrate: 32 k, 40 k, 48 k, 56 k, 64 k, 80 k, 96 k, 112 k, 128 k, 160 k,
192 k, 224 k, 256 k, 320 kbps
Sampling frequency: 32 k, 44.1 k, 48 kHz

Vietnamese/Indonesian

735 (W) g 471 (H) g 113 (D) mm

735 (W) g 463 (H) g 167 (D) mm

)dnatshtiw(gk3.8/)dnatstuohtiw(gk8.7thgieW

/iahT/naisreP/naissuR/eseugutroP/hcnerF/cibarA/esenihCdefiilpmiS/hsilgnEegaugnalDSO

2 – 1

LC-32LE250M

CHAPTER 3. OPERATION MANUAL

[1] OPERATION MANUAL

Part names

TV (Front)

Remote control sensor

POWER indicator

Light off Power off.
Lighted (Red) The TV is in standby mode.
Lighted (Green) The TV is on.

TV (Rear)

6

7

8

COMPONENT/AV INPUT

R-AUDIO-L

VIDEO

/

AUDIO (R/L)

OUTPUT

SERVICE
ONL Y

9

10

1 POWER (On/Off) button
2 MENU button
3 INPUT button
4 Channel up (r)/down (

) buttons

s

5 Volume up (e)/down (f) buttons

S
E

R
V

ICE

U
S

B
O
N

L
Y

AN

T

I
NP

U
T

1

A
UD

IO
IN
(
R/

L

)

C
O
M

P
O

N
E
N

T
/

A
V

IN

V

P
I
DE

UT
O
/
Y

R

-A
U
D

IO

-L

/
V
IDE

O

R-A

UDI

O

-L
A
UD

IO (R/L)

6 USB terminal*
7 SERVICE ONLY terminal**
8 INPUT 1 (HDMI) terminal
9 INPUT 2 (COMPONENT/AV INPUT)

terminals

1

2

11

3

10 INPUT 3 terminals
11 Antenna input terminal
12 AUDIO IN (R/L) terminal
13

/AUDIO OUTPUT terminal

12

4

13

5

* USB terminal use for USB Media Player.
** Usually do not connect anything to this terminal as it is reserved only for service personnel.

s The illustrations in this operation manual are for explanation purposes and may vary slightly from the actual operations.

3 – 1

Remote control unit

7 AV MODE

1
2
3
4

5

6

7

8

9

10

11

12

1 POWER (STANDBY/ON)

To switch the power on and off.

2 COLOUR ADJ.

Adjust the colour tone of the image on screen.

3 DISPLAY

Display the channel or input information.

4 SLEEP

Set the Sleep Timer.

0 hr. 30 min. 1 hr. 0 min.

Off

2 hr. 30 min.

5 0 – 9

Set the channel.

6A (Flashback)

PressA to return to the previous selected channel
or external input mode.

13

14

15

16

17

18

19

1 hr. 30 min.

2 hr. 0 min.

8 VOLk/VOL

9e (Mute)

10a/b/c/d (Cursor)

11 WIDE

12 Colour (Red/Green/Yellow/Blue)

13 ECO

14 PHOTO

15 INPUT (INPUT SOURCE)

16 CHr/CH

17 MENU

18 MPX

19 RETURN

LC-32LE250M

Select an audio and video setting.

l

Set the volume.
(VOLk) Increase the volume.
(VOLl) Decrease the volume.

e s

Press
Presse again s Restores sound.

Mute will be cancelled after 30 minutes. However, the TV
will not suddenly output loud sound as the volume level will
be set to 0 automatically. Increase the volume level by
pressing VOLk.

Select a desired item on the setting screen.

ENTER

Execute a command.

Change the wide image mode.

The coloured buttons are correspondingly used to select the
coloured items on the screen.

Reduce overall power consumption based on user
preferences.

Display your pictures directly on the TV screen.

Select an input source.

TV input mode: Select the channel.
(CHr) Increase the channel number.
(CH

Display the menu screen.

Select the sound multiplex mode.

MENU mode: Return to the previous menu screen.

Mutes sound.

s

s

) Decrease the channel number.

3 – 2

LC-32LE250M

Attaching the stand

• Before attaching (or detaching) the stand, unplug the AC cord from the AC outlet.

• Before performing work spread cushioning over the base area to lay the TV on. This will prevent it from
being damaged.

Con-rm the screws supplied with the TV.

1

Screws (m4)

(used in step 3)

Insert the stand base guide pins to the

2

stand holes on the rear of the TV. (1)

•

Make sure the symbol on the stand base
is parallel with the triangle symbol located
at the back of the TV.

Insert and tighten the 4 screws into the 4 holes

3

on the rear of the stand assembly.(2)

NOTE

•

To detach the stand, perform the steps in reverse order.

•

The TV position setting is set to 7 backward after attaching
the stand.

•

Do not remove the plastic wrap before attaching the stand
base to protect it from scratches.

•

The bottom area of the set (curvy area) must be beyond the
table’s edge to prevent the TV from damage.

Screw

Screw driver

Soft cushion

Guide pin holes

V

I
D
E

V
I
D

E
O

Stand base
guide pins

S
E

R
V

I
C
E

U

S
O
N
L

Y

I
N
P

U
T

1

C
O

M
P
O

N
E

N
T
/A

V
I
N

P

UT
O
/
Y

R

-
A

U

D

I
O

-
L

/

R

­A

U
D

A

I
O

U

D

­L

I
O

(

R

/

L

)

B

A
N

T

A
U

D
I

O
I
N
(
R
/
L

)

3 – 3

CHAPTER 4. DIMENSIONS

[1] DIMENSIONS

Unit mm

LC-32LE250M

4 – 1

LC-32LE250M

CHAPTER 5. REMOVING OF MAJOR

PARTS

R

E

M

O

V

I

N

G

O

F

M

A

J

[1] REMOVING

OF MAJOR PARTS

1. Remo ving of the Rear Cab in et Ass ’y and S tand assembly.

1. R e move the 4 scr ews and detach the S tand assembly

2.R e move the 2 scr ew , 1 screws and .

3. R emove the 1 scr ew , 6 screws

Detach the Rear Cabinet Ass’y

4.

.

O

R

P

A

R

T

R

E

M

O

V

I

N

G

O

F

detech AC cord

M

A

J

O

R

P

A

R

T

R

E

M

O

V

I

N

G

7

O

F

M

A

J

O

R

P

A

R

T

R

E

M

O

V

I

N

G

O

F

M

A

J

O

R

P

A

R

T

R

E

M

O

V

I

N

G

O

F

M

A

J

O

R

P

A

R

T

.

6

5

3

2

3

5 – 1

2. Removing of the Bottom Bracket and speaker L/R

LC-32LE250M

1. Remove 4 screw bottom bracket

1

2, Disconnect SP wayer & remove speaker from L/Rpanel bosses

3. Remove 1 screw from front angle L/R & remove front angle

4. Disconnect PD,LW,RA & remove 3 screw main unit

5. Disconnect LED wayer & remove 4 screw sub main unit

5

PD

4

5

PD

SP

2

3

4

LW

LED WAYER

RA

1

33

2

5 – 2

LC-32LE250M

3. Removing of the LCD Panel Module

1. Detech the 10 lock hook refer figure 1.

2, and detech the LCD Module

1

2

Rear Cabinet Ass'y

Hook

1

Hook

Hook

Hook

Hook

Hook

Hook

Hook

Hook

2

Hook

Figure 1

KS-Bezel

Cab-A

Lock

Note:

Make sure perfectly detech lock

5 – 3

LC-32LE250M

CHAPTER 6. ADJUSTMENT

[1] ADJUSTMENT

[1] ADJUSTMENT PROCEDURE

1. Entering and cancel the adjustment process mode

1) While holding down the TV/VIDEO and Volume DOWN keys at the same time, plug in the AC cord to turn on the power. (“K” standing for inspec­tion process mode is displayed on the upper left position of the screen.)

2) Press the Channel DOWN and Volume DOWN keys at the same time. (The adjustment process mode screen appears.)

3) To cancel it, turn off the power using the Power switch or remote control.

2. Remote controller key operation and description of display in adjustment process mode.

1. key operation

Remote controller key Main unit key Function

CH ( / )
VOL (+ / –) VOL (+ / –) Changing volume (UP/DOWN)
Cursor ( / )

Cursor ( / )
INPUT button on remote
controller
ENTER —————— ——————

* Input mode is switched automatically when relevant adjustment is started so far as the necessary input signal is available.

CH ( / )

—————— Turning a page (PREVIOUS/NEXT)
—————— Changing a selected line setting (+10/-10)

INPUT button Input source switching (toggle switching)

Changing channel (UP/DOWN)

(TV INPUT1 INPUT2 INPUT3 USB )

3. Software upgrading.

1) Plug off the LCD TV.

2) Insert the USB device to the USB terminal at the LCD TV.

(Make sure that the latest software is installed in the USB device).

3) Hold the LCD TV power key and plug on the LCD TV.

4) LCD TV is on and detecting the USB device.

Binary

file detecting

5) A few seconds later, the software upgrading will start automatically.

Do not power off

Chip erasing

.......................

Do not power off

Chip programming

.......................

6 – 1

LC-32LE250M

A

6) Let the process running & entering verification.

7) Software is successfully installed when the following appears at the end of the process.

Do not power off

Verifying

.........................

Verify Pass

Please re-boot the system

Update Finished

8) Plug off the LCD TV and plug ON again as usual.

9) LCD TV is running with the latest software.

LCD TV ADJUSTMENT ITEM

1. EDID DATA INPUT

No need to input EDID

2. SIGNAL ADJUSTMENT

A. PICTURE ADJUSTMENT

Confirmation of signal from generator (setting to spec level)

PAL Composite signal • 0.7Vp-p 0.02Vp-p (pedestal to white level)

15K Component signal (50Hz) • Ylevel • 0.7Vp-p 0.02Vp-p (pedestal to white level)

Pb, Pr level • 0.7Vp-p : 0.7Vp-p 0.02Vp-p

33K Component signal • Ylevel • 0.7Vp-p 0.02Vp-p (pedestal to white level)

Pb, Pr level • 0.7Vp-p

a) Adjustment Mode

ITEM CONDITION PROCEDURE

1

djustment M ode Press the test key at the test remote control

+
–

+
–

+
–

+
–

0.7Vp-p 0.02Vp-Com

•

+
–

6 – 2

b) Component 15K 50Hz Signal Adj ustment (COMP-SD)

A

A

ITEM CONDITION PROCEDURE

LC-32LE250M

1Setting [Signal]

2 Auto Adjustment Test Mode page4

COMP 15K 50Hz
(576i)
100% Full- field Col our
Bar

[Terminal]
COMPONENT
INPUT 3

(COMP SD)

• Feed the CO MPONENT 15K 50Hz (576i ) 100% Ful l-fiel d
Colour Bar signal(100% colour saturation) to
COMPONENT INPUT 3

100% White

t the related page, move cursor to [COMP SD ADJ], press

ENTER.

[OK] appears when finished.

c) Component 33K 60Hz Signal Adjustment (COMP-HD)

ITEM CONDITION PROCEDURE

1 Setting [Signal]

2 Auto Adjustment Test Mode page 5

COMP 33K 60Hz
(1080i)
100% Full-field Colour
Bar

[Terminal]
COMPONENT
INPUT 3

(COMP HD)

• Fe ed the COMPONENT 33K 60Hz (108 0i) 100% Full-f ield
Colour Bar sig nal(100% col our saturati on) to
COMPONENT INPUT 3

100% White

t the related page, move cursor to [COMP HD ADJ], press

ENTER.

[OK] appears when finished.

••

••

Black

Black

6 – 3

LC-32LE250M

B. WHITE BALANCE ADJUSTMENT

a) White Bal ance Adjustment

ITEM CONDITION PROCEDURE

1Setting Backlight : MAX

AV Mode : DYNAMIC
ActiveBacklight:OFF

Set the luminance
meter on the centre of
the screen

2Auto

Adjustment

[command]
Adjustment Mode
KRSW0001
KKT10037

FACT0001
Setting
KYOF0001
OSDS0001
SBSL16_ _

Multi point adj. Mode
MSET0000
WBI20255

Point 2

WBI20229
MG2G****
MG2B****
MG2R****

Point 1
WBI10051
MG1G****
MG1B****
MG1R****

Set Max.Level

MGMG****
MGMR****
MGMB****

Write

MSET0003

For the details of w hite balance adjustment procedure, please ref er to whit e
balance adjustment spec for Kameyama model.

1. Confirm the set condition.

2. Connect the white balance jig.

3. Through RS-232C command, adjustment mode screen is displayed.

[Adj ustment Procedure]

1. Using t he R/C, set the LCD TV to adjustment mode.

2. Measure Max brightness (L

3. Calculate min. brightness (L

4. Measure Point 2 brightness (L

5. Set the reference value R,G,B of Point 2 (Ref.2)=3664 x(229 /P2)
whereP2=255x[(L

6.

Set the specified gradation for point 2, fix the most faint colour to get

high–Lmin

max

min

).

)=L

high

)/(L

/3000.

max

).

max–Lmin

1/2.2

)]

reference value, adjust others 2 colour to minus adjustment for
reference val ue of point 2.

7. Measure Point 1 brightness (L

8. Set the reference value R,G,B of Point 1 (Ref.1)=816 x(51 /P1)
whereP1=255x[(L

low–Lmin

).

low

)/(L

max–Lmin

1/2.2

)]

9. Set the specified gradation for point 1. Set G of point 1 to the default
value [ (Ref.1 x G value of point 2 / Ref.2), wit h fractions rounded] and
adjust RB to the reference value of point 1.

10. Set the G of point Max. to the default value (4080 x G value of point 2 /

Ref.2). Set the R,B Max. value [G
of point 2)].

–Gvalueofpoint2+(R,Bvalue

max

11. Adjusted value is writing at [command] MSET0003.

12. Shut down the AC power.

• Ini tial val ue at RGB 2 point : 3664

• Ini tial val ue at RGB 1 point : 816

6 – 4

[Adjustment value]

A

• Teaching set send by engineering dept is set as reference.

[Reference val ues for adjustment ref erence]

Equipment : Luminance meter [Minolta CA-210]

Ref. : For inspect ion, set the LCD TV as below.

3. FACTORY SETTING

AC power is plug off after shipment setting is done.

Level

Point 2

ref.

values

Point 1

ref.

values

229

51

AV MODE : [D YNAMIC ] (R es et)

Aging Tim e : Minim um 60 minutes

Spec

Data

x=0.272

y=0.277

x=0.272
y=0.277

djustment

Spec.

• 0.0010 • 0.0020

• 0.0045 • 0.0090

Inspect ion

Spec.

LC-32LE250M

Caution: Do not plug on again after shipment setting i s done. If do, please re-do the shipment setting. Do not off

with remote control.

ITEM CONDITION PROCEDURE

Factory setting AC power off to exit the

factory setting.

1. Setting is done with test remote control.

2. Press the ‘Factory Setting’ key on the remote control continuously.

3. When Green background appears on screen and ‘K’ mark
disappears, setting is completed.

The followings are initialised to factory setting

1) User setting

2) Channel data (e.g. broadcast frequencies)

3) Manufacturer’s option settings

4) Password data

5) Setting values are set based on model destination

Model Name Factory Setting Key

Asia ,Near and Middle

East

PHILIPPINES

M-Setting 100000001010110 B/G ENGLISH

P-Setting 100000001011110 M ENGLISH

**Please do inspection for A3KLED3P

Name

(PHILIPPINES)

Remote Control

Code

using NTSC signal.

S-System Setting OSD Language

Setting

6 – 5

LC-32LE250M

CHAPTER 7. TROUBLESHOOTING

TABLE

[1] TROUBLESHOOTING TABLE

[1] TROUBLESHOOTING TABLE

No power (front LED failure to light up) or no startup (front LED failure to turn from red to green)

Is the AC cord connector tightly connected to the set? NO Reconnect the AC cord tightly and turn on the power again.

YES

Are the wire harnesses and other cables properly connected in
the set?

NO Reconnect the wire harnesses and other cables properly in the

set.

YES

Is there the AC_CT RL and POWER_LED signal input at pins
(70 ) and (44) of IC3301

YES

Are the DC/DC converter outputs and the output voltages along
the control lines as specified?

1) M+5.6V (IC9601)

2) D+1.26V (IC9602)

3) D+5V (IC9601)

4) D+3.3V (IC9603)

5) D+1.8V (IC9606)

6) D+2.5V (IC9608)

NO Check the AC_CTRL signal line POWER_LED signal line.

NO Check the DC/DC converters and the control lines. Replace

defective parts as required.

7 – 1

With [RF] signal input No video onscreen (1)

No video in the UHF/VHF reception

Is there IF output from the tuner pin( 8 ) of TU1101 as specified? NO Check TU1101 and its peripheral circuits.

LC-32LE250M

Is there VIF input at pin 38 & 39 of IC3301? NO Check the circuit between TU1101 & IC3301.

Are there the signal outputs of IC3301? NO Check IC3301 and its peripheral circuit.

Check LVDS cable, LCD controller (incl. panel) and their periph­eral circuits.

With <Video> signal input No video onscreen (3)

No external input video onscreen <INPUT 3>

Is INPUT 3 selected on the input select menu screen? NO Select INPUT 3 on the input select menu screen to pick up the

Is there the video signal input at pin (19 ) of IC3301? NO Check the line between pin (9) of TL539 and pin (19) of IC3301.

YES

YES

YES

right input signal.

YES

Are there signal outputs of IC3301? NO Check IC3301 and its peripheral circuits.

Check LVDS cable, LCD controller (incl. panel) and their periph­eral circuits.

YES

YES

7 – 2

LC-32LE250M

With <Component> signal input No video onscreen (2)

No external input video onscreen <INPUT 2>

Is INPUT 2 selected on the input select menu screen? NO Select INPUT 2 on the input select menu screen to pick up the

YES
Are there the Y, Pb and Pr signal inputs at pins (13), (11) and
(15 ) of IC 3301 respectively?

YES
Is input waveform of IC3301 normal?
Y=(13) pin, Pb=(11) pin, Pr=(15) pin

YES
Check LVDS cable, LCD controller (incl. panel) and their periph­eral circuits.

With <HDMI> signal input No video onscreen (4)

No external input video onscreen <INPUT 1>.

Is INPUT 1 selected on the menu screen? NO Select INPUT 1 on the input select menu screen to pick up the

NO Check the line between pins (6) /(14)/(18) of TL563 and pins

NO Check IC3301 and its peripheral circuits.

right input signal.

(11) /(15 )of IC3301.

(13)/

right signal input.

YES
Are there signal outputs from SC1501 to IC3301? NO Check peripheral circuits between SC1501 and IC3301.

YES
Are there signal outputs of IC3301? NO Check IC3301 and its peripheral circuits.

YES
Check LVDS cable, LCD controller (incl. panel) and their periph­eral circuits.

7 – 3