Sharp LC-39LE155M Schematic

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SERVICE MANUAL

No.S63M2139LE155M

LED BACKLIGHT TV

MODEL : LC-39LE155M

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

CHAPTER 7. OVERALL WIRING/BLOCK DIAGRAM

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. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS...........4-1

[1] SYSTEM BLOCK DIAGRAM............................7-1

CHAPTER 8. PRINTED WIRING BOARD ASSEM­BLIES

[1] Main Unit .............................................8-1

[2] LED IR Unit ........................................8-5

CHAPTER 9. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC

DIAGRAM .......................................... 9-1

[2] MAIN Unit ...........................................9-2

[3] LED IR Unit .......................................9-3

Parts Guide

CHAPTER 5. ADJUSTMENT

[1] ADJUSTMENT....................................5-1

CHAPTER 6. TROUBLESHOOTING TABLE

[1] TROUBLESHOOTING TABLE .........................6-1

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-39LE155M

SAFETY PRECAUTION

SAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRE CAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY P RECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUT IONSAFETY



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 for 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 dr ess 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 netw orks, 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.

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

PRECAUTIONSAFETY PRECAUTIONSAFETY PRECAUTIO NSAFETY PRECAUTIONSAFETY PRECAUTIO NSAFETY PRECAUTIONSAFETY PRECAUTI ON

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-39LE155M

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 and 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 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.

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

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-39LE155M

)

CHAPTER 1. OUTLINE

[1] OUTLINE

[1]

OUTLINE

MAJOR SERVICEPA

PWB

UNIT

Ref No.PartN

N
N

N

DKEYMG311FM01

RDENCA470WJPZ

DUNTKG238FM03

o

.Des

RTS

MAIN Unit
POWER Unit

LED RC Unit

OTHER UNIT

Ref N

o.
N
N
N

Part No. D

RLCDTA296WJQZ

CLCDTA318WE01

RUNTKB187WJZZ

LCD Hiraki Panel Unit

LCD Panel Module Unit
LED BAR (A)

criptio

n

escription

N

RUNTKB188WJZZ

LED BAR(B

1 – 1

CHAPTER 2. SPECIFICATIONS

[1] SPECIFICATIONS

Specifications

LC-39LE155M

Item

Screen size

Resolution

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

TV
Function

Audio amplifier/Speakers

Terminals

OSD language

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

Power Consumption 57 W (1.0 W Stand by )

Dimensions

Operating Temperature 0°C — 40°C

TV-Standard

Receiving
Channel

TV-Tuning System Auto Preset 99 ch

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

Antenna input

INPUT 1 HDMI (HDMI input), PC input

INPUT 2 VIDEO in, AUDIO in, COMPONENT in

INPUT 3 VIDEO in, AUDIO in

OUTPUT AUDIO out, Headphone (

without stand

with stand

Model

CATV

mc89

073,600 pixels (1920 g 1080)

PAL: B/G, D/K, I SECAM: B/G, D/K, K/K

FHU/FHV

S1—S41ch (including Hyperband)

5 W g 2 / 3 g 10 cm 2pcs

UHF/VHF 75 q DIN type

English/Simplified Chinese/Arabic/French/Portuguese/Russian/Persian/Thai/
Vietnamese/Indonesian

898 (W) g 553 (H) g 81 (D) mm

898 (W) g 633 (H) g 236 (D) mm

M551EL93-CL

zHM52.368—52.44

º671:Vº671:HselgnagniweiV

3.5 mm stereo)

1

NTSC: M

)dnatshtiw(gk0.7/)dnatstuohtiw(gk3.6thgieW

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.

2 – 1

LC-39LE155M

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)

1 POWER (On/Off) button
2 MENU button
3 INPUT button
4 Channel up (r)/down (
5 Volume up (e)/down (f) buttons
6 USB terminal*
7 INPUT 1 (HDMI) terminal
8 SERVICE ONLY terminal**
9 INPUT 3 terminals
10

/AUDIO output (R/L) terminal

11 Antenna input terminal
12 INPUT 2 (COMPONENT/AV INPUT) terminals

10

11

12

1

2

3

4

5

6

7

8

9

* 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.
s The illustrations used throughout this manual are based on LC-32LE155M.

s

) buttons

3 – 1

Remote control unit

LC-39LE155M

12
13

14

15

16

17

18

19

10

11

1
2

3

4

5

6

7

8

9

TIMER

1 POWER (STANDBY/ON)

To switch the power on and off.

2 DISPLAY

Display the channel or input information.

3 TIMER

Set the Sleep Timer and Reminder.

4 0 – 9

Set the channel.

5A (Flashback)

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

6 AV MODE

Select an audio and video setting.

7 VOLk/VOL

l

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

8e (Mute)

e s

Press

Mutes sound.

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.

9a/b/c/d (Cursor)

Select a desired item on the setting screen.

ENTER

Execute a command.

10 WIDE

Change the wide image mode.

11 Colour (Red/Green/Yellow/Blue)

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

12 ECO

Reduce overall power consumption based on user
preferences.

13 COLOUR ADJ. (FREEZE)

Freeze a motion picture on the screen and adjust the colour
tone of the still image.

14 PHOTO

Display your pictures directly on the TV screen.

15 INPUT (INPUT SOURCE)

Select an input source.

16 CHr/CH

s

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

s

(CH

) Decrease the channel number.

17 MENU

Display the menu screen.

18 MPX

Select the sound multiplex mode.

19 RETURN

MENU mode: Return to the previous menu screen.

3 – 2

LC-39LE155M

Attaching the stand

• Before attaching (or detaching) the stand, unplug the AC cord from the AC outlet.
he TV on. This will prevent it from

• Before performing work spread cushioning over the base area to lay

being damaged.

Con-rm the screws supplied with the TV.

t

Screws (

(used in step 2 and 3)

m

5)

Insert and hook post guide into stand base slot
holes. (
Fix the post using short screw. (

1

)

)

2

Insert the stand basetothe
bottom of the TV. (

3

)

Insert and tighten the 4 long screws into the 4

)

holes on the bottom of the stand base. (

NOTE

• To deta

• Do not attach or detach the stand without holding it.
Doing so can cause the stand to fall, resulting in serious
personal injuries as well as damage to the stand.

ch the s

CAUTION

tand, perform the ste

4

in reverse order.

s

p

Soft cushion

3

4

3 – 3

CHAPTER 4. REMOVING OF MAJOR

PARTS

[1] REMOVING MAJOR PARTS

LC-39LE155M

1.Remove the 8 screws

and slowly pull out to the right . ( Refer figure .1 )

2.Disconnect LED BL Wire and disconnect PD Wire . ( Refer figure 2)

3.Remove 4 screws from power board.

5

4.For remove main unit disconnect LVDS wire ,IR wire & speaker wire

and remove 1 screw at main unit.(Referfigure2)

Figure 1

7

1 2

and detach bottom cover by pull up bottom area

3

4

6

1

2

1

4 – 1

LC-39LE155M

Figure 2

3

5

4

6

7

6

4 – 2

[2] REMOVING OF STAND ASSEMBLY & BOTTOM
BRACKET & SPEAKER L/R

LC-39LE155M

1.Remove 4 screws and detach the stand assembly

2.Remove 7 screws and detach bottom bracket .

3.Remove the speaker L/R from rear cabinet

1

3

4

5

2

5

5

3

3

3

3

2

3

4

1

4 – 3

LC-39LE155M

[3] REMOVING OF THE LCD PANEL MODULE

1.Remove 4 screws and detach top cover by unhook 7 hooks

2.Unhook 5 hooks that attach to bezel and remove 2 screws .

3.Then turn the set to front

4.Detach the front cabinet by unhook remaining 10 hooks .

1

3

4

5

1

6

2

2

3

5

4

6

6

6

4 – 4

CHAPTER 5. ADJUSTMENT

[1] ADJUSTMENT

[1]

ADJUSTMENT PROCEDURE

1.

Entering

1) While holding down the
inspec-

2) Press the Channel DOWN and Volume DOWN keys at the same time. (The

3) To cancel

2.

Remote controller

1. key

and

cancel the adjustment process mode

INPUT

tion process m ode is

it, turn off the power using the Power switch or remote

operation

and Volume DOWN keys at t he same time, plug in the AC cord to turn on the power. (“K” standing for

displayed

key

on the upper left position of the

operation

and

description of display in adjustment process mode.

control.

screen.)

adjustment

process mode screen

LC-39LE155M

appears.)

Remote controller key

CH ( /
VOL (+ /
Cursor ( /

Cursor ( /
INPUT button on

controller
ENTER —————— ——————

* Input mode is switched

3.

Software upgrading.

1) Plug off the LCD

)

–)

)

)

remote

CH ( /

VOL (+ /
——————
——————

INPUT

automatically

TV.

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

(Make sure that the latest software is installed in the USB

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

4) LCD TV is on and detecting the USB

5) A few

seconds later, L E D l i g h t ( o r a n g e ) wi l l b l i n k i n d i c a t i n g the software

Main

–)

button

when relevant

unit key

)

device.

adjustment

Changing

Changing
Turning a page
Changing

Input source switching (toggle
(ATV IN PUT1  INPUT2  INPUT3

is started so far as the

selected line

selected line setting

(PREVIOUS/NEXT)

a selected line setting

necessary

TV.

device).

TV.

F

(UP/DOWN)

(+1/-1)

(+10/-10)

switching)

input signal is

unction

)

available.

upgrading.

7) T V w i l l a u t o m a t i c a l l y r e s t a r t w h e n s oftware is successfully installed

8) LCD TV is running with the latest software.

5 – 1

LC-39LE155M

Adjust the VCOM value by volume resistor (VR)

Revolve the VR till the f licker bec omes the

4.

EDID DATA

No need to i nput

INPUT

EDID

5. VCOM ADJUSTMENT

a. Setting [Signal]

b. Manual VCOM

adjustment

6. SIGNAL ADJUSTMENT

6.1 PICTURE ADJUSTMENT
Confirmation of signal from generator (sett ing 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)

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

6.1.1 Adjustment Mode

1 Adjustment Mode Press the test key at the test remote control

6.1.2 Component 15K 50Hz Signal A djustment (COMP-SD)

1

Setting

ITEM CONDITION PROCEDURE

Flicker pattern
(2H checkered
pattern (2n+1))
LEVEL ½ MAX
With Hiraki panel
condition

Pb, Pr l evel ：0.7Vp-p ：0.7Vp- p ± 0.02Vp-p

Pb, Pr l evel ：0.7Vp-p ：0.7Vp- p ± 0.02Vp-Com

ITEM CONDIT

ITEM CONDITION PROCEDURE

[Signal]
COMP 15K 50Hz
(576i)
100% Full-field
Colour Bar

[Terminal]
COMPONENT
INPUT 2

ION PROCEDURE

・Input flicker pattern

RGB 2H+1 checkered pattern

1.
on

SC-PWB with screw driver.

2.
weake st.

・Feed the COMPONENT 15K 50Hz (576i) 100% Full-field

Colour Bar signal(100% colour saturation) to
COMPONENT INPUT 2

100% White

→←

Black

2 Auto Adjustment Test Mode page 4

(COMP SD)

At the r elated page, m ove cursor to [ COMP SD A DJ], press
ENTER.
[OK] appears when finished.

6.1.3 Component 33K 60Hz Signal Adjustment (COMP-HD)
ITEM CONDITION PROCEDURE

1

Setting

[Signal]
COMP 33K 60Hz
(1080i)
100% Full-field

・Feed the COMPONENT 33K 60Hz (1080i) 100% Full-field

Colour Bar signal(100% colour saturation) to
COMPONENT INPUT2

Colour Bar

[Terminal]
COMPONENT

100% White

INPUT 2

2 Auto Adjustment Test Mode page 5

(COMP HD)

At the related page, move cursor to [COMP HD ADJ], press
ENTER.
[OK] appears when finished.

→←

Black

5 – 2

6.2) White Balance Adjustment

T

T

N
O. ITEM CONDITION PROCEDURE

LC-39LE155M

1 Setting Backlight : MAX

AV Mode : DYNAMIC
Active Backlight :
OFF

Set the luminance
meter on the centre
of the screen

2Auto

Initial setting Panel Contrast

Adjustment

[command]
Adjustment

Mode

KRSW0001

KKT10037

Setting

KYOF0001

OSDS0001

SBSL0016

Multi point

adj. Mode

MSET0000

WBI20255

Point 2

WBI20204

MG2G****

MG2B****

MG2R****

Point 1

WBI10051

MG1G****

MG1B****

MG1R****

(1) Measurement MAX Brightness
(2) Set MIN Brightness
(3) Measurement HIGH Brightness
(4) Measurement LOW Bri ghtness

(5) Calculation H γ
(6) Calculation Lγ

(7) Calculation HIGH luminance (γ=2.2)

(8) Calculation Initial setting of R/G/B_HIGH

(9) Set Initial setting of R/G/B_HIGH

(10) Original WB adjustment is performed (HIGH)

Set the specified gradation for poin
most faint colour to get reference value,
adjust others 2 colours to minus adjustment for
reference value of point 2.

(11) Measurement HIGH Brightness

(Set) R_HIGH= G_HIGH

(12) Calculation MAX luminance after WB

(13) Set R/G/B_MAX

For the details of white balance adjustment procedure, please refer to white
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.

R/G/B_MAX
R/G/B_HIGH
R/G/B_LOW

G_HIGH= G_HIGH
B_HIGH= G_HIGH

ADJ set to γ=2.2(L

XHG

t2,fixthe

)

C

nt

=3000:1

WB

MAX

= 4080

WB

H

= 3664/4080

WB

L

= 1008/4080

L

max

=305.7 cd/m²

min=Lmax/Cnt

L

XH

=235.1 cd/m²

L

XL

=2.06 cd/m²

L

HX

=(L

H

/WB

=WB

XH

H

/WB

XL

L

/WB

max-Lmin

MAX

MAX

Hγ=LOG((L
LOG(WB
Lγ=LOG((L
LOG(WB

H22

L
(WB

WB
(1/H γ)=3703

R_HIGH=WB
G_HIGH=WB
B_HIGH=WB

R_HIGH=3702
G_HIGH=3641
B_HIGH=3703

R_HIGH=3641
G_HIGH=3641
B_HIGH=3641

XMX=LXHG

L

/((W

=0.102

-L

min

MAX

)= 2.44

-L

min

MAX

)=2.73

)x

)^2.2+L

X ((L

HX

’=3703

HX

’=3703

HX

’=3703

B

H

/WB

Example: G6 panel also us e
for G8/ CSOT, C MI (b e car eful
of INT s ett ing)

)/(L

)/(L

min

H22

max-Lmin

max-Lmin

=241.31

-L

min

))/

))/

)/(L

max-Lmin

RESUL

L

XHG

=231.3

MAX

)^2.2)=293.04

))^

Write

MSET0003

Set

Max.Level
MGMG****
MGMR****
MGMB****

(14) Calculation LOW luminanc

(15) Calculation Initial setting of R/G/B_LOW

(16) Set Initial setting of R/G/B_LOW

(17) Original WB adjustment is performed (LOW).

Set the specified gradation for point 1. Set G of

e(γ=2.2)

R_MAX=G_MAX*(R_HIGH/G_HIGH)=4078

MAX

X((L

XMX

-L

min

)/(L

max

G_MAX=WB

min

))^(1/Hγ)=4010

L

-

B_MAX=G_MAX*(B_HIGH/G_HIGH)=4078

XLX

=(L

XMX

-L

min

L

LX

=WB

WB

min

))^(1/Lγ)=901

L

MAX

X ((L

)x(WBL/WB

XLX

MAX

)^2.2+L

-L

min

)/(L

max

min

-

=5.08

point 1 to the default value [(R1 x G value of
point 2/R2), wit h fractions rounded] and adjust
RB to the reference value of point 1.

R_LOW=WB
G_LOW=WB
B_LOW=WB

XLX

XLX

XLX

=901

=901

=901

RESUL

R_LOW= 921

(18) Adjusted value is writing at [command]

MSET0003

(19) Set the G of point Max. to

the default value

5 – 3

G_LOW=901
B_LOW=971