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Model
LL-T1500A (serv.man21)
Pages
43
Size
949.71 KB
Type
PDF
Document
Service Manual
Brand
Device
Monitor / LLT1500A Complete
File
ll-t1500a-sm21.pdf
Date

Sharp LL-T1500A (serv.man21) Service Manual ▷ View online

COPYRIGHT 
ã
 2000 BY SHARP CORPORATION
All rights reserved.
Printed in Japan.
No part of this publication may be reproduced,
stored in a retrieval system, or transmitted.
In any form or by any means,
electronic, mechanical, photocopying, recording, or otherwise,
without prior written permission of the publisher.
SHARP CORPORATION
Information Systems Group
Quality & Reliability Control Center
Yamatokoriyama, Nara 639-1186, Japan
2000 September Printed in Japan 
Symbol/PartsCod)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CHAPTER 1. OUTLINE OF THE PRODUCT, NOMENCLATURE AND 
FUNCTIONS
[1] Features
·
38 cm [15 type] 1024-dots x RGB x 768-line TFT color LCD panel
·
200 cd/m
2
 high-luminance design
·
Connectable to analog RGB output (for CRT)
Multi display mode function that supports resolutions from 640-dot
x RGB x 400-line to up to 1024-dot x RGB x 768-line
In modes lower than 800 x 600 dots, it is possible to enlarge the
screen that offers smooth and excellent visibility.
Supports VESA specification, Power Macintosh etc.
·
Up to 16,190,000 colors are displayable
·
Automatic screen adjustment
·
The display timing and RGB gain can be more finely adjusted due
to the OSD guide function, in addition to the automatic adjustment
function.
·
Power management function
·
Supports Plug&Play (VESA:DDC1, DDC2B specifications)
[2] Safe servicing and safe inspection,
<When servicing or inspecting,
observe the safety instructions.>
1. Observe the cautions.
Locations which require a special caution carry safety instructions
using labels and stamps on the cabinet, chassis and components.
When servicing, observe the instructions on such labels and
stamps as well as those in the Instruction manual.
2. Exercise care not to get an electrical shock
accident.
Some parts have a high voltage inside the unit. Use caution when
handling them while they are energized.
3. Use specified parts.
The component parts of this unit have safety characteristics such
as flame resistance and dielectric strength. Use replacement parts
which have the same characteristics as those of the components
parts used for this unit.  In particular, component parts marked
with 
!
 in the circuit drawing parts list are important for maintaining
the safety of the product. Make sure to use specified replacement
parts.
4. Reinstall component parts in their original
locations and return wires which have been
rerouted for servicing purposes to their original
positions.
Some component parts use insulating materials such as tubes or
tape for safety purposes, or are mounted, a bit floated, on the
printed wiring board.
When rerouting inside wiring or clamping the wires, use caution
not to bring the wires too close to heating or high-voltage parts.
Make sure to return inside wiring to their original locations.
5. Check for safety after servicing.
After finishing servicing, check whether the screws, parts, wires
which have been removed for servicing are reinstalled properly.  In
addition, check to see if you have not deteriorated parts around
the part you serviced, and also check for insulation between each
of the attachment plug terminals and the external metal section.
[3] Specifications
1. General specifications
Name of the product: LCD color monitor
Item
Specifications
LCD display device
38 cm [15 type] TFT liquid crystal
Picture element pitch
0.297 mm (horizontal) x 0.297 mm (vertical)
Display area
304.1 mm (horizontal) x 228.1 mm (vertical)
Number of picture
elements
1024 x RGB x 768 dots
Display color
16,190,000 colors (max.)
Input vide signal
Analog RGB (0.7 Vp-p/75
W
)
Input synchronizing
signal
Horizontal synchronizing signal TTL level
Input terminal
15-pin mini D-sub connector
Plug&Play
VESA DDC1/DDC2B
Power management
function
Compatible with VESA DPMS
Working temperature
5 ~ 35°C
Power supply
DC+12  V,  100 AC 50/60Hz (when the
adapter is used)
Power consumption
22 W (when USB hub is used) /max. 30 W
(when USB hub is used)
Outer dimensions
about 362 mm (width) x 185 mm (depth) x
343 mm (height)
Weight
approx. 5.2 kg
Accessories
AC power supply cord (1), Instruction
manual (1), warranty (1), adjustment disk
(1), USB cable (1)
·
Specifications and a part of the appearance are subject to change
without notice.
2. Technical specifications
Item
MIN
TYP
MAX
Unit
Power supply voltage
AC
90
100
110
V
Working temperature range
+5
+35
°C
Storing temperature range
-20
+60
°C
Humidity range
20
85
%RH
Visual angle range
Vertical (CR   5)
+40 ~ -50
+60 ~ -60
Temperature
Horizontal (CR   5)
60
70
Temperature
Contrast ratio(CR)
(
q
 = 0°)
200
300
Response speed
Leading (
t
r)
10
25
ms
Trailing (
t
d)
35
50
ms
Screen white chromaticity
(X)
0.283
0.313
0.343
(Y)
0.299
0.329
0.359
White surface luminance
(Y
L
)
150
200
cd/m
2
Module model number
LQ150X1DH10
Specifications and a part of the appearance are subject to change without notice.
[Power management]
This unit supports DPMS*
1
 Energy Star*
2
.
To use the power management function of this unit, the video card
and the computer must be compatible with the DPMS specifica-
tions.
*1 DPMS: Display Power Management Signaling
DPMS mode
Screen condition
Power consumption
Horizontal synchronization
Vertical synchronization
ONSTATE
Displayed state
approx. 22 W *
Yes
Yes
STANDBY
No display
approx. 3 W
No
Yes
SUSPEND
Yes
No
OFFSTATE
No
No
At the time of  the USB hub un- use
*2 Energy Star: We are a partner company of the International
Energy Star Program. We judges that this prod-
uct conforms to the guidelines of the International
Energy Star program.
The International Energy Star program is a guideline introduced
by the Environmental Protection Agency that promotes energy
savings of office equipment including computers.  It aims at pro-
moting the development and use of products with a function that
suppresses energy consumption efficiently.  Companies can par-
ticipate voluntarily in this program at their own discretion. The
products that are allowed to participate in this program are office
equipment including computers, displays, printers, facsimile and
copiers, and the same criteria and marking (logo) are used among
partner countries.
[DDC*
3
(Plug & Play)]
This unit supports VESA’s DDC specifications
This monitor supports VESA DDC*
3
 standard.
The DDC is a signal standard for ensuring plug&play function
between the monitor and personal computer and sends and re-
ceives information on resolution and others between the monitor
and personal computer. Plug&Play function can be used only
when the computer supports DDC and is configured to detect a
plug&play monitor.
Some DDC types are available according to different communica-
tion protocols.
This monitor supports DDC1 and DDC2B.
*
3
 Display Data Channel
[4] Nomenclature and functions
[Front part]
[Rear part]
[Side part]
Panel Power Button 
This turns the panel power  ON
or OFF.
Power LED 
This indicator illuminates 
when the power is turned 
on.
These buttons are used to: 
1) Adjust the value of the 
selected OSD option; 
2) Adjust the brightness of the 
backlight while the OSD 
menus is not displayed.
SELECT 
This button is used to 
select the OSD options.
MENU 
This button is used to pop 
up, select and close the 
OSD menus.
Stand Cover
 
Back Cover
USB Upstream Port
This port is for connecting a 
USB downstream connector 
on your PC or a USB hub.
Lock Anchor
This is an anchor hole for Kensington
  
 type security lock.
Signal Cable
This is for connecting the 
monitor to the VGA 
connector of the video 
source (PC).
This is for connecting the 
Power Connector
power cable.
Connector Cover
Main Power Switch
This turns the monitor Õs 
main power ON or OFF.
USB Downstream Ports
These ports are for 
connecting the USB devices.
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