LC-15C2EA (serv.man2). Contents, safty, , operation, dimensions (p.1-5) - Sharp TV Service Manual (repair manual)

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.

»

IMPORTANT SERVICE SAFETY

PRECAUTION .................................................... 2

»

SPECIFICATIONS ............................................. 3

»

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

»

DIMENSIONS .................................................... 5

»

REMOVING OF MAJOR PARTS ....................... 6

»

ADJUSTING PROCEDURE OF

EACH SECTION ................................................ 9

»

TROUBLE SHOOTING TABLE ........................ 12

»

CHASSIS LAYOUT .......................................... 18

»

BLOCK DIAGRAM ........................................... 20

»

OVERALL WIRING DIAGRAM ........................ 22

»

DESCRIPTION OF SCHEMATIC DIAGRAM .. 24

»

SCHEMATIC DIAGRAM

Ë

OPERATION UNIT ..................................... 25

Page

Page

Ë

MAIN UNIT ................................................ 26

Ë

TUNER UNIT ............................................. 38

Ë

INVERTER UNIT ....................................... 46

»

PRINTED WIRING BOARD ASSEMBLIES ..... 47

»

PARTS LIST

Ë

ELECTRICAL PARTS ................................ 51

Ë

MAIN UNIT ................................................ 51

Ë

TUNER UNIT ............................................. 55

Ë

INVERTER UNIT ....................................... 59

Ë

OPERATION UNIT ..................................... 59

Ë

CABINET AND MECHANICAL PARTS ..... 60

Ë

ACCESSORIES PARTS ............................ 62

Ë

PACKING PARTS ....................................... 62

»

PACKING OF THE SET ................................... 63

S42H1LC15C2EA

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

å

”

Ë

and shaded areas in the 

Replacement Parts Lists 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.

1. For continued safety, no modification of any circuit

should be attempted.

2. Disconnect AC power before servicing.

TO EXPOSED
METAL PARTS

CONNECT TO
KNOWN EARTH
GROUND

•

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

•

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

1. Inspect all lead dress to make certain that leads are

not pinched, and check that hardware is not lodged
between the chassis and other metal parts in the
receiver.

2. Inspect all protective devices such as non-metallic

control knobs, insulation materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacitor networks, mechanical
insulators and etc.

3. To be sure that no shock hazard exists, check for

leakage current in the following manner.

•

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

•

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

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

DVM

AC SCALE

50k ohm

10W

0.15 

µ

F

TEST PROBE

Items

15" LCD COLOUR TV, Model: LC-15C2EA

LCD panel

15" Advanced Super View & BLACK TFT LCD

Number of dots

921,600 dots

Video colour system

PAL/SECAM/NTSC

TV

TV-Standard (CCIR)

B/G, I, D/K, L

Function

TV-Tuning System

Auto preset 200 ch.

STEREO/BILINGUAL

NICAM, IGR

AUTO PRESET

Yes

CATV

~Hyper Band

Brightness

430 cd/m

2

Lamp life

60,000 hours

Viewing angles

H: 170

°

 V: 170

°

Audio amplifier

2.1 W 

×

 2

Speakers

5 cm ø 2 pcs.

Terminals

AV-IN 1

RGB

AV-IN 2

S-VIDEO, VIDEO, AUDIO

OUT

AUDIO

Antenna

DIN

Headphones

3.5 mm ø jack (Front)

OSD language

English/German/French/Spanish/Italian/Swedish/Dutch

Power requirement

DC 12 V, AC 110 V – 240 V, 50/60 Hz

Weight

5.3 kg, incl. stand, excl. accessories

Accessories

Operation manual, Remote Control, Batteries,
AC adapter, AC cord, Cable clamps

•

TV/VIDEO, CH(

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

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

TV/VIDEO

CH

MENU

Remote sensor window
(The actual location is not visible.)

A green indicator lights when the power 
is on and a red indicator lights when in 
the standby mode (the indicator will not 
light when the main power is off).

A red indicator blinks when the TV set 
receives the remote control signal.

Functions same as OK 
on the remote control 
when the menu is 
displayed.

Function same as 

'

/

"

on the remote 

control when the menu 

is displayed.

Function same as 

\

/

|

 on the remote 

control when the menu 

is displayed.

To change the vertical 
angle of the LCD TV set, 
tilt the screen up to 5 
degrees forward or 10 
degrees backward. The TV 
set can also be rotated 40 
degrees horizontally. 
Please adjust the angle so  
that the TV set can be 
watched most comfortably.

L

R

AUDIO OUT

E

T

CH

TV/VIDEO

TEXT

REVEAL

HOLD

END

M

MENU

SOUND

SUBTIT

LE

OK

Displays the Teletext

Subtitle directly.

Temporarily holds

the current Teletext page.

Cyan, Status Display
Turns on the status display
when the menu is not
displayed.

Returns to the

previous channel.

Upwards / Downwards 
Selection, zoom display 
function
(Teletext mode)

Switches the

   sound mode.

REVEAL
The last Teletext page is 
displayed with the Reveal 
function activated. 
The Reveal function applies 
to this page only once.

CH (    )/(    ) 
Display previous/
next page
(Teletext mode)