Sharp LLT17A4H-B Schematic
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SERVICE MANUAL
MODEL
CONTENTS
CHAPTER 1. OUTLINE OF THE PRODUCT,
NOMENCLATURE AND FUNCTION. . . . . . . . . . . . . . . . . .1 - 1
CODE : 00Z
LLT17A4SME
LCD MONITOR
LL-T17A4-H
LL-T17A4-B
CHAPTER 2. CONNECTION, ADJUSTMENT,
OPERATION, AND FUNCTIONS. . . . . . . . . . . . . . . . . . . . .2 - 1
CHAPTER 3. DISASSEMBLY AND ASSEMBLY. . . . . . . . . . . . . . . . . . . .3 - 1
CHAPTER 4. BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 1
CHAPTER 5. TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 - 1
CHAPTER 6. CIRCUIT DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 - 1
CHAPTER 7. PWB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 - 1
Model Name
LL-T17A4H LL-T17A4U LL-T17A4E Ivory
LL-T17A4B LL-T17A4Y LL-T17A4P Black
Product Name
For USA For Other
Color
Parts mark ed w ith "!" 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 pub lished to be used
SHARP CORPORATION
for after sales service only.
The contents are subject to change without notice.
CHAPTER 1. OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION
1. SPECIFICATIONS
■
■ Product specifications
■ ■
• Model name
LL-T
17A4
-H (Ivory)/LL-T
17A4
-B (Black)
• LCD display
43 cm measured diagonally
TFT LCD module
• Resolution (max.)
SXGA 1280 x 102 4 pixels
• Displayable colors (max.)
Approx. 16.19 million colors (6bit+FRC)
• Brightness (max.)
2
250cd/m
• Dot pitch
0.264 (H) x 0.264 (V) mm
• Contrast ratio
430 : 1
• Angle of visibility
Left-right 170°; Up- down 150° (co ntrast rat io > 5)
• Screen display size
Horizonta l 337.9 mm x Ver t ical 270.3 m m
• Video signal
Analog RGB (0.7Vp- p ) [7 5Ω]
• Sync signal
Separate Sync (TTL level: +/-), Sync on Green, Composite Sync (TTL
level: +/-)
• Expansion compensation
Digital sca li ng ( Enla r ges VGA/ SVGA /XGA etc. to ful l s cr een si ze .)
• Plug & Play
VESA DDC2B compatible
• Power management
VESA: based on DPMS
• Speaker output
1W + 1W
• Input signal terminal
Mini D-sub 15 pin (3 row)
• Audio input terminal
Mini stereo jack
• Headphone terminal
Mini stereo jack
• Screen tilt
Upward approx. 0° - 20° ; down ward appro x. 0° - 5°
• Screen swivel
Approx. 90° from lef t th ro ugh ri g ht (T urn t abl e ty pe)
• Power supply
AC100 - 240V, 50/60Hz
• Temperature of operating environment
5 - 35°C
• Power consumption
33 W (with no audio inp ut)
(36 W maximum, 1.6 W when in power-savin g mode)
• Dimensions
Approx.
381 (W) x 222 (D) x 365 - 412 (H) mm
• Weight
Approx. 6.3kg (approx. 4.1kg excluding stand)
(Excluding signal cable.)
■
■ Dimensions (Units: mm)
■ ■
381
68
412
365
321
222202
• Analog signal cable: approx. 1.8 m
• Audio cable: approx. 1.8 m
■
■ Relevant signal timings
■ ■
Display mode Hsync Vsync
VESA 640 x 480 31.5kHz 60Hz 25.175MHz
37.9kHz 72Hz 31.5MHz
37.5kHz 75Hz 31.5MHz
800 x 600 35.1kHz 56Hz 36.0MHz
37.9kHz 60Hz 40.0MHz
48.1kHz 72Hz 50.0MHz
46.9kHz 75Hz 49.5MHz
1024 x 768 48.4kHz 60Hz 65.0MHz
56.5kHz 70Hz 75.0MHz
60.0kHz 75Hz 78.75MHz
1152 x 864 67.5kHz 75Hz 108.0MHz
1280 x 960 60.0kHz 60Hz 108.0MHz
1280 x 1024 64.0kHz 60Hz 108.0MHz
80.0kHz 75Hz 135.0MHz
US text 720 x 400 31.5kHz 70Hz 28.3MHz
Power
Macintosh
series
Sun
Ultra series
640 x 480 35.0kHz 66.7Hz 30.2MHz
832 x 624 49.7kHz 74.6Hz 57.3MHz
1024 x 768 60.2kHz 75Hz 80.0MHz
1152 x 870 68.7kHz 75Hz 100.0MHz
1280 x 1024 64.0kHz 60Hz 108.0MHz
80.0kHz 75Hz 135.0MHz
1024 x 768 48.3kHz 60Hz 64.13MHz
53.6kHz 66Hz 70.4MHz
56.6kHz 70Hz 74.25MHz
1152 x 900 61.8kHz 66Hz 94.88MHz
71.8kHz 76.2Hz 108.23MHz
1280 x 1024 71.7kHz 67.2Hz 117.01MHz
81.1kHz 76Hz 134.99MHz
Dot
frequency
• Recommended resolution is 1280 x 1024.
• All are compliant only with non-interlaced.
• Frequencies for Power Macintosh and Sun Ultra series are reference
values. To connect, another adapter (commercially available) may be
required.
• If the monitor is receiving timing signals that are not compatible, [OUT
OF TIMING] will appear.
Follow your computer's instruction manual to set the timing so that it
is compatible with the monitor.
• If the monitor is not receiving any signal (synch signal), [NO SIGNAL]
will appear.
LL-T17A4-H/B OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION
1 – 1
■
12 3 4
5
89FGH
■ The analog RGB input connector pin
■ ■
(Mini D-sub connector with 15 pins)
5 1234
10
15 11121314
6789
2. PRODUCT DESCRIPTION
I
No. Function No. Function
1 Red video signal input 9 +5V
2 Green video signal input 10 GND
3 Blue video signal input 11 GND
4 GND 12 DDC data
5 GND 13 For Hsync signal input
6 For red video signal GND 14 For Vsync signal input
7 For green video signal GND 15 DDC clock
8 For blue video signal GND
■
■ Power management
■ ■
The monitor is based on VESA DPMS (Display Power Managemant
Signaling).
To activate the monitor's Power Management function, both the video
card and the computer must conform to the VESA DPMS standard.
DPMS mode Screen
ON Display on 36W Yes Yes
STANDBY
SUSPEND Yes No
OFF No No
■
■ DDC (Plug & Play)
■ ■
This monitor supports the VESA DDC (Display Data Channel) standard.
DDC is a signal standard for carrying out Plug & Play functions on the
monitor or PC. It transfers information such as degree of resolution
between the monitor and PC. You can use this function if your PC is
DDC compliant and if it is set so that it can detect the Plug & Play monitor.
There are many varieties of DDC due to the differences between systems. This monitor works with DDC2B.
Display off 1.6W
Power
consumption
H-sync V-sync
No Yes
7
6
1 ME NU button This button is us ed t o po p-u p, s ele ct an d cl ose
2 c/MODE button When the OSD Menu is displayed:
3 e d buttons When the OSD Menu is displayed:
4 Power but ton Pressing this button turns the power on.
5 Power LED This LED is lit green when in use and orange
6
Speakers
7 Headphone ter-
minal
8 Main power switch
9 Power t erminal
F Analog RG B
input term i n al
G Audio input termi-
nal
H Security lock
anchor
I Ventilation
openings
the OSD (On Screen Display) Menu.
When the OSD Menu is not displayed:
When the OSD Menu is not displayed:
Press the button again to turn the power on.
when in power-saving mode.
Audio enterin g via the exter nal device co n-
nected to the monitor can be heard.
Headphones (commercially available) can be
connected here.
The analog signal cable is connected here. The
analog signal cable included should be used.
A computer's audio o utput t erm inal can be connected here. The aud io cable inc luded shou ld
be used.
By connecting a security lock (commercially
available) to the se cur i ty lock anchor, the m onitor is fixed so that it cannot be transported.
The security slot works in conjunction with
Kensington Micro Saver Security Systems.
Note: Never blo ck th e ventil ation o pening s as
this may lead to overheating inside the monitor
and result in malfunction.
6
This button is used to select menu options.
This button is used to set DISPLAY MODE.
These buttons are used to select an option or
adjust the value of the selected option.
These buttons are used to adjust backlight
brightness and speaker volume.
LL-T17A4-H/B OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION
1 – 2
■
■ Height adjustment, angle adjustment
■ ■
Caution:
• Pressure from hands on the LCD panel could cause damage.
• Do not attempt to move the monitor beyond its movement range.
Applying excessive force to move the monitor may damage the
product.
• Be careful not to allow your fingers to be pinched.
Height adjustment
Lowest position Highest position
approx. 47mm
approx. 60
approx. 20
• When positioning the display higher, hold the stand tight so that it
does not move together with the display.
Angle adjustment
approx. 20˚
approx. 5˚
approx. 45˚
approx. 45˚
LL-T17A4-H/B OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION
1 – 3
CHAPTER 2. CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS
1. CONNECTION
Caution:
• When connecting, ensure that both the monitor and computer are switched off.
• Be careful not to overly bend the cable or add extension cords as this could lead to a malfunction.
1-1. Connecting the monitor to a computer
Analog RGB terminal
(Mini D-sub 15 pin, 3 row)
Analog signal cab le
• Paying att ention to connector direction, firmly insert the signal cable
vertically into the connector, and then tighten the screws at both
sides.
If connecting to a D-sub 15 pin 2 row Apple P ower Macint osh, attach a
Macintosh conversion adapter (commercially available) to the analog
signal cable.
■ Connect the accessory audio cable
When the accessory audio cable is connected to the audio output terminal of the computer, the sound of the connected computer is output
from the monitor speakers. You can also use the headphone jack of the
display.
Audio input terminal
Audio output ter minal
Audio cable
1-2. Connection of headphones
(commercially available)
Headphones (commercially available) can be connected.
Headphone ter minal
Macintosh conversion adapter
Note: If connecting to the Sun Ultra series, a conversion adapter (com-
mercially available) may be required.
LL-T17A4-H/B CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS
Headphones
Note: When the headphones are connected, no sound can be heard
from the monitor speakers.
1-3. Connecting the monitor to a power source.
Power terminal
Power cord
2 – 1
AC outlet
1-4. Turning the power on
1. Turn on the main power of the monitor.
Main power switch
• When switching the main power switch on and off, always wait for an
interval of at least 5 seconds. Rapid switching may result in malfunction.
2.Press the monitor's power button.
The power LED will light up orange.
3.Turn on the computer.
Turn on the
computer power
Press power button.
supply.
ON
• When a signal is input from the computer, the power LED lights
up green, and the screen is displayed. (After power is turned on, it
may take a little time until the screen is displayed.)
Note:
• If using the monitor for the first time or after having changed the
system settings during use, perform an automatic screen adjustment.
• Depending on the type of computer or OS, you may need to
install the monitor set-up information on your system.
• When connecting to a notebook, if the notebook computer's
screen is set to display at the sam e time, the MS-DOS screen
may not be able to display properly. In this ca se, change th e settings so that only on the monitor.
1-5. Turning the power off
1. Turn the computer off.
2. Press the monitor's POWER button.
The Power LED will disappear.
Turn the
computer off.
Press power button.
OFF
If the monitor will not be used for a long time, turn off the main power
switch of the monitor, and remove the power plug from the outlet.
LL-T17A4-H/B CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS
2 – 2
1-6. Instructions for attaching a VESA compliant arm
An arm or stand based on the VESA standar d (comme rcially available)
can be attached to the monitor.
Procurement of the arm or stand is at the customer's discretion.
Arms or stands able to be used
Attachments must satisfy the following.
• Compatible with the VESA standard
• Have a gap of 100 mm x 100 mm between the screw holes on the
section to be attached.
• Not be likely to fall off or break off after being attached to the monitor.
How to attach the arm or stand
• Be careful not to overly bend the cable or add extension cords as this
could lead to malfunction.
• While following these instructions, please also refer to the installation
instructions in the operation manual included with the arm or stand.
Caution: Be careful not to get your fingers pinched between the display
and stand nor to let the stand drop. These could lead to injury.
1. Remove the cables.
2. Spread out a soft cloth on a suitable horizontal surface.
3. Being careful not to damage the monitor, gently lay the monitor on it
display-side down.
5. Remove the six screws and then remove the stand from the monitor.
Note:
• The stand is specially made for use with this monitor. Once having
removed the stand, never attempt to attach it to another device.
• Once having removed the screws, store them together with the
stand and if the stand is ever re-attached be sure to use the original
screws.
Using different screws could lead to a malfunction.
6. Attach the arm to the monitor with the four screws.
4. Remove the cover.
• While pressing the A areas on the sides, push it up.
Note: The screws used to attach the arm should be M4 screws with a
length of 6 mm ~ 8 mm protruding from the surface to be
attached.
Using different screws could cause the monitor to fall off or to be
internally damaged.
6 - 8 mm
Screw used to attach arm
Arm
Part of monitor to which arm is attached
LL-T17A4-H/B CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS
2 – 3
2. ADJUSTMENT
2-1. ADJUSTMENT METHOD
1) Resetting all adjustment values
MENU
Press the above two buttons at same time, and while turn the power on.
2) ADJUSTMENT menu reset
MENU
3) Adjustment lock function
MENU
While pressing the MENU button, turn the power on.
4) Adjusting the backlight and speaker volume
5) Setting display mode
/MODE
6) Screen adjustment
MENU
ADJUSTMENT
AUTO
/MODE
Power ON
Press the two buttons at same time.
Power ON
buttons (Press the button and select "BRIGHT" or "VOLUME".)
button (STD, OFFICE, sRGB, VIVID)
/MODE
/MODE
/MODE
/MODE
/MODE
CLOCK
PHASE
H-POS
V-POS
buttons
buttons
buttons
buttons
MENU
GAIN CONTROL
/MODE
/MODE
BLACK LEVEL
CONTRAST
AUTO
MENU
MENU
MENU
MODE SELECT
WHITE BALANCE
(COOL STD
/MODE
/MODE
/MODE
/MODE
/MODE
OSD H-POSITION
OSD V-POSITION
SCALING
400 LINES
LANGUAGE
END
7) Version display (for service)
Power ON.
Display the software version.
Press the above two buttons at same time, and while turn the power
on.
MODEL NAME : LL-T17A4E
VERSION : V1.000
DATE : 23/05/2003
CHECK SUM : 595D
V-Sync : 75 Hz
H-Sync : 46 kHz
buttons
buttons
WARM USER)
/MODE
/MODE
/MODE
8) Aging (for service)
Press the d button, Screen color is changed as following.
Red 3 Green 3 Blue3 Yellow 3 P urple 3 Light Blue 3 White
3 Black
When the test is terminate, Power off
buttons
CONTRAST
(R/G/B)
R-CONTRAST
G-CONTRAST
B-CONTRAST
buttons
buttons
buttons
buttons
MENU
/MODE
buttons
buttons
buttons
buttons
Power ON
LL-T17A4-H/B CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS
2 – 4
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