Sharp LL-T180A (serv.man2) Service Manual ▷ View online
CHAPTER 1. OTLINE OF HE PRODUCT, NOMENCLATURE AND FUNCTIONS
[1] Features
·
46 cm [18.1 type] 1280-dots x RGB x 1024-line high-resolution TFT
color LCD panel
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 1280-dot x RGB x 1024-line
In modes lower than 1024 x 768 dots, it is possible to enlarge the
In modes lower than 1024 x 768 dots, it is possible to enlarge the
screen that offers smooth and excellent visibility.
VESA standard, PC9800 series, Power Macintosh compatible
·
Up to 167,70 thousand colors can be displayed.
·
Automatic screen adjustment, OSD lock, automatic gain control
functions
functions
·
The display timing and RGB gain can be more finely adjusted due
to the OSD guide function, in addition to the automatic adjustment
function.
to the OSD guide function, in addition to the automatic adjustment
function.
·
Power management function
·
Supports Plug&Play (VESA:DDC1, DDC2B standards)
·
Supports composite sync., sync-on-green in addition to H,V sepa-
rate sync.
rate sync.
[2] Safe servicing and safe inspection,
<When servicing or inspecting,
observe the safety instructions.>
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.
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
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.
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
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
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
[Model]
: LL-T180A
[LCD panel]
·
Display method
: Transmission type TN LCD panel
·
Driving method
: TFT (Thin Film Transistor) active-matrix type
·
Screen size
: 460.0 mm (18.1 type) diagonal
·
Viewable area
: 287.2 (vertical) x 359 (horizontal) mm
·
Pixel configuration
: 1280 x 1024 pixels (1 pixel = R + G + B dots)
·
Pixel pitch
: 0.805 (H) x 0.805 (V) mm
·
Pixel array
: R,G,B vertical stripe
[Light source]
: Inside light (CCFT method), Service life: approx. 50,000 H (at normal temperature of 25°C.)
[Power consumption]
: approx. AC 54 W. AC4.5W in power management mode (when the AC adapter is used)
[Adjustment controls and switches]
: (Front side)
Power supply switch ........................... POWER
Input selector key switch .................... INPUT
OSD adjustment key switch ............... SELECT MENU
[LED]
: (Front side)
Green
: Normal operation after power supply is turned on.
Orange
: In power save mode
[Input terminal]
: (Rear side)
Video input connector......................... 15-pin mini D-sub connector x2 ports
Power supply input connector ............ DC jack
[Video input signal]
: Analog RGB (0.7 Vp-p/75
W
)
[Synchronizing input signal]
: Vertical sync. signal
TTL level (positive, negative)
: Horizontal sync. signal
TTL level (positive, negative)
Separate sync., composite sync., sync.-on-green compatible
[Outer dimensions]
: 470 mm (W) x 218 mm (D) x 450 mm (H) (including the stand)
[Weight]
: approx. 11.5 kg Monitor with stand
[Accessories]
: AC adapter (incl. AC cord) (100 V AC 50/60 Hz DC+12 V)
Mini D-sub signal cable (1.8 m)
Instruction manual, warranty, adjustment disk
[Safety standard]
: AC adapter: Conforms to Electrical Appliance Control Law (type approval No. 91-57126)
[Undesired radiation]
: Meets VCCI Class B
2. Technical specifications
Item
MIN
TYP
MAX
Unit
Power supply voltage
AC
90
100
110
V
DC
11.4
12.0
13.2
V
Working temperature range
+5
—
+35
°C
Storing temperature range
-20
—
+60
°C
Humidity range
20
—
85
%RH
Visual angle range
Vertical (CR 5)
50
70
—
Temperature
Horizontal (CR 5)
60
70
—
Temperature
Contrast ratio(CR)
(
q
= 0°)
230
300
—
—
Response speed
Leading (
t
r)
—
10
25
ms
Trailing (
t
d)
—
35
50
ms
Screen white chromaticity
(X)
0.274
0.304
0.334
—
(Y)
0.284
0.314
0.344
—
White surface luminance
(Y
L
)
150
200
—
cd/m
2
Module model number
LQ181E1DG10
Specifications and a part of the appearance are subject to change without notice.
[Power management]
This unit supports VESA*
1
DPMS*
2
.
To use the power management function of this unit, the video card and
the computer must be compatible with the DPMS specifications.
*1 VESA: Video Electronics Standards Association
*2 DPMS: Display Power Management Signaling
DPMS mode
Screen condition
Power consumption
Horizontal synchronization
Vertical synchronization
ONSTATE
Displayed state
approx. 54 W
Yes
Yes
STANDBY
No display
Less than 4.5 W
No
Yes
SUSPEND
Yes
No
OFFSTATE
No
No
[DDC*
3
]
This unit supports VESA’s DDC specifications
DDC means a signal specification that offers Plug&Play function to the
monitor and the personal computer.
Information about resolution and others are communicated between
the monitor and the personal computer.
This function is available when the personal computer supports DDC.
There are some DDC types depending on different communication
methods.
methods.
This unit supports DDC1 and .DDC2B.
*3 DDC: Display Data Channel
[4] Nomenclature and functions
Front side
Rear side
Control buttons
Power-on lamp
The lamp comes on in green
in normal operation. The lamp
turns orange when the unit is
put in the power save mode.
The lamp comes on in green
in normal operation. The lamp
turns orange when the unit is
put in the power save mode.
POWER (Power supply button)
Press the switch to turn the unit
on. (It may take a little time for
the screen to appear after
turning the unit on.)
Press the switch again to turn
the unit off.
Press the switch to turn the unit
on. (It may take a little time for
the screen to appear after
turning the unit on.)
Press the switch again to turn
the unit off.
Stand front cover
The AC adapter can be
stored in this cover.
The AC adapter can be
stored in this cover.
MENU
Use this button to display,
switch over, and exit the
adjustment menu.
Use this button to display,
switch over, and exit the
adjustment menu.
INPUT
The signal input terminals are
switched over every time the
button is pressed.
The signal input terminals are
switched over every time the
button is pressed.
The adjustment setting is changed
every time the button is pressed.
In addition, the adjustment options can
be switched over by using this button.
Pressing the button when the
adjustment menu is not shown on the
screen, makes it possible to adjust the
brightness of the backlight.
every time the button is pressed.
In addition, the adjustment options can
be switched over by using this button.
Pressing the button when the
adjustment menu is not shown on the
screen, makes it possible to adjust the
brightness of the backlight.
SELECT
Select adjustment items
Select adjustment items
Theft preventive lock
installation hole
A commercial theft preventive
cable (such as that is available
from Kensington) can be connected.
installation hole
A commercial theft preventive
cable (such as that is available
from Kensington) can be connected.
Power supply terminal cover
This cover needs to be
removed when connecting the
AC adapter.
This cover needs to be
removed when connecting the
AC adapter.
Stand rear cover
When setting up, this cover
needs to be removed to pass
the cables.
When setting up, this cover
needs to be removed to pass
the cables.
AC adapter connection
terminal
(inside the power supply terminal
cover)Make sure to use the AC
adapter supplied with the monitor.
terminal
(inside the power supply terminal
cover)Make sure to use the AC
adapter supplied with the monitor.
Analog RGB input terminal 2
(inside signal terminal cover)
Use this terminal when using a
2nd computer.
(inside signal terminal cover)
Use this terminal when using a
2nd computer.
Signal terminal cover
Used to cover the analog input
RGB input terminal.
In the case of connecting a 2nd
computer, disconnect the signal
cable before connecting the 2nd
computer.
Used to cover the analog input
RGB input terminal.
In the case of connecting a 2nd
computer, disconnect the signal
cable before connecting the 2nd
computer.
CHAPTER 2. REMOVING LCD MODULE
Procedure:
Disassembly
1. Remove the DC cover and RGB cover.
2. Remove the 2 screws in
.
3. Remove the 6 screws in
.
4. Remove the 2 screws in
and remove the VGA cable (loosen
another two screws.
5. Remove the 9 screws in
and remove the rear cabinet.
6. Remove the switch connector and the screw in
.
7. Remove the 4 screws in
and remove the 8 screws in
.
8. Remove the 2 screws in
.
9. Remove the 2 CCFT connectors.
10. Remove the shielding plate from the front cabinet.
Reassembly
1. Reassemble the parts in the reverse order of disassembly steps (1
- 10).
·
Use caution to prevent the cables from getting caught in the
cabinet when reinstalling the parts.
cabinet when reinstalling the parts.
·
Pay attention to tightening torque:
Screws of
: 6 kg-cm
Screws of
: 4 kg-cm
CHAPTER 3. CONNECTION, ADJUSTMENT, OPERATION AND FUNCTIONS
Connecting procedure
Note:
·
Make sure that both the monitor and computer are turned off before connecting or disconnecting the cord or cable.
·
When connecting or disconnecting the cord and cable, make sure to hold their plug, not the cord or cable.
·
Make sure to use the AC adapter supplied with the monitor. (Sharp ADP-0011-A)
Proceed to the next page according to the installation method of the monitor.
1. In the case of using on desktop
·
1-1 The AC adapter is put outside
- - -
1-1 When the AC adapter is to be installed outside
·
1-2 The AC adapter is housed in the monitor - - -
1-2 When the AC adapter is installed on the stand
2. In the case of installing on the
arm or stand
- - - - - -
2. Cautions to be taken when installing a VESA standard compatible arm. (reference)
Click on the first or last page to see other LL-T180A (serv.man2) service manuals if exist.