Sharp LC-15M4E (serv.man8) Service Manual ▷ View online
1
LC-15M4E
SERVICE MANUAL
S91A2LC-13B2E
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.
to its original condition and only parts identical to those specified should be used.
MODEL
LC-15M4E
CONTENTS
»
IMPORTANT SERVICE SAFETY
PRECAUTION .................................................... 2
»
SPECIFICATIONS ............................................. 3
»
OPERATION MANUAL ...................................... 4
»
DIMENSIONS .................................................... 6
»
REMOVING OF MAJOR PARTS ....................... 7
»
ADJUSTING PROCEDURE OF
EACH SECTION .............................................. 10
»
TROUBLE SHOOTING TABLE ........................ 17
»
CHASSIS LAYOUT .......................................... 22
»
BLOCK DIAGRAM ........................................... 24
»
DESCRIPTION OF SCHEMATIC
DIAGRAM ........................................................ 26
Page
Page
»
SCHEMATIC DIAGRAM
Ë
OPERATION and R/C RECEIVER UNIT ... 27
Ë
MAIN UNIT ................................................ 28
Ë
TERMINAL UNIT ....................................... 44
»
PRINTED WIRING BOARD ASSEMBLIES ..... 45
»
PARTS LIST
Ë
ELECTRICAL PARTS ................................ 48
Ë
MAIN UNIT ................................................ 48
Ë
TERMINAL UNIT ....................................... 53
Ë
OPERATION UNIT ..................................... 53
Ë
CABINET AND MECHANICAL PARTS ..... 54
Ë
ACCESSORIES PARTS ............................ 56
Ë
PACKING PARTS ....................................... 56
»
PACKING OF THE SET ................................... 57
SHARP CORPORATION
LCD AV MONITOR
TENTATIVE
2
LC-15M4E
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SAFETY NOTICE
Many electrical and mechanical parts in LCD television
have special safety-related characteristics.
These characteristics are often not evident from visual
inspection, nor can protection afforded by them be
necessarily increased by using replacement components
rated for higher voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical
components having such features are identified by “
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
”
IMPORTANT SERVICE SAFETY PRECAUTION
Ë
Service work should be perfomed only by qualified service technicians who are thoroughly
familiar with all safety checks and the servicing guidelines which follow:
familiar with all safety checks and the servicing guidelines which follow:
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.
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.
WARNING
1. For continued safety, no modification of any circuit
should be attempted.
2. Disconnect AC power before servicing.
TO EXPOSED
METAL PARTS
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
KNOWN EARTH
GROUND
DVM
AC SCALE
50k ohm
10W
0.15
µ
F
TEST PROBE
•
Use an AC voltmeter having with 5000 ohm per volt, or
higher, sensitivity or measure the AC voltage drop
across the resisor.
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.
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.
BEFORE RETURNING THE RECEIVER
(Fire & Shock Hazard)
(Fire & Shock Hazard)
Before returning the receiver to the user, perform
the following safety checks:
the following safety checks:
1. Inspect all lead dress to make certain that leads are
not pinched, and check that hardware is not lodged
between the chassis and other metal parts in the
receiver.
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.
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).
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.
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 FUSE. F701 (T1.25A, 250V), F702
(T1.25A, 250V), F703 (T2A, 250V) FUSE.
AGAINST A RISK OF FIRE REPLACE ONLY WITH
SAME TYPE FUSE. F701 (T1.25A, 250V), F702
(T1.25A, 250V), F703 (T2A, 250V) FUSE.
3
LC-15M4E
Specifications
LCD
Panel
Number of dots
Low reflection
Brightness
Viewing angles
Left to right
Upper to lower
Lamp Life
COLOUR
System
SYSTEM
AUDIO
Amplifier
Speaker
Full range
Woofer
TERMINALS
AV 1 IN
AV 2 IN/OUT
Headphone jack
POWER SUPPLY
DC operation
AC operation
APPEARANCE
Exterior colour
Outside dimensions
Net weight
ACCESSORIES
Operation manual
Remote control
Wall mount parts
AC adapter
AC cord
Batteries
OSD LANGUAGE
Language
15” Black TFT LCD
921,600 (640
×
3
×
480) dots
Non-glare
4.0 cd/m
2
(at normally white)
160°
160°
60,000 hours (at normal mode)
N358/N443/PAL/PAL-M/PAL_N/PAL-60/SECAM
3.4 W (0.7 W
×
2 + 2.0 W)
3 cm
×
4 cm Oval, 2 pcs.
6.5 cm Round, 1 pc.
Video Composite (BNC TYPE), Audio R/L
Component input, Y/P
B
(C
B
)/P
R
(C
R
)(BNC TYPE)
Video Composite (BNC TYPE), Audio R/L
3.5 mm ø jack
DC 12 V
AC 110~240 V, 50/60 Hz with AC adapter
Silver
357.0 (W)
×
309.2 (H)
×
*62.5 (D) mm
3.4 kg, incl. stand, excl. accessories
Language: English/German/French/Italian/
Spanish/Swedish/Dutch
Infrared wireless type
Wallmount bracket
×
1 pc.
Fixed screw
×
1 pc.
Auto-wide type
1 pc.
R-03 (UM/SUM-4) Dry Battery
×
2 pc.
English/German/Dutch/French/Italian/Spanish/
Swedish
ITEMS
LC-15M4E
Specifications are subject to change without prior notice.
4
LC-15M4E
Operation Manual
Remote sensor
window
window
Power/Standby indicator
Speakers
MAIN POWER switch
AV INPUT button
VOL (+)/(–) buttons
SELECT (
]
)/(
[
)
buttons
MENU button
The six buttons shown at the left
have the same functions as
those on the remote control.
* When this manual describes
have the same functions as
those on the remote control.
* When this manual describes
button functions, it is referring
to the buttons on the remote
control.
to the buttons on the remote
control.
Side control section
MENU
SELECT
VOL
ON
OFF
MAIN
POWER
AV INPUT
+
Stand
Rear Speaker
(woofer)
(woofer)
Rear terminal section
Can also be used as video
output terminals.
output terminals.
AUDIO
Y
P
B
P
R
COMPONENT
R
L
AV 1 IN
VIDEO
POWER
INPUT
DC12V
AUDIO
VIDEO
AV 2 IN/OUT
R
L
HEAD
PHONE
AUDIO
VIDEO
COMPONENT
AUDIO
VIDEO
HEADPHONE
POWER INPUT
DC12V
DC12V
AV 1 IN
AV 2 IN/OUT
Main unit (front view)
Main unit (rear view)
