Sharp LL-T18A1 Service Manual ▷ View online
LL-T18A1
CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS
2 – 4
2-2. ADJUSTMENT ITEM LIST
BUTTON
ITEM
ADJUSTMENT
DESCRIPTION
MENU
MENU 1:
ADJUSTMENT
ADJUSTMENT
MANUAL
CLOCK
0~255
CLOCK: Adjust so that vertical flicker noise is not emit-
ted. (
e d
buttons)
MENU 1
4
MENU 2
4
MENU 3
4
MENU 4
4
MENU END
PHASE
0~xx
PHASE: Adjust so that horizontal flicker noise is not
emitted. (
e d
e d
e d
e d
buttons)
H-POS
0~xx
H-POS (horizontal positioning) and
V-POS (vertical positioning)
V-POS (vertical positioning)
To center the screen image within the boundaries of
the screen, adjust the left-right (H-POS) values and
the up-down (V-POS) values. (
the screen, adjust the left-right (H-POS) values and
the up-down (V-POS) values. (
e d
e d
e d
e d
buttons)
V-POS
0~xx
AUTO
Automatic screen adjustment
Options in the ADJUSTMENT Menu can be adjusted
automatically
(CLOCK, PHASE, H-POS V-POS).
automatically
(CLOCK, PHASE, H-POS V-POS).
MENU 2:
GAIN CONTROL
GAIN CONTROL
MANUAL
BLACK
LEVEL
LEVEL
0~xx
BLACK LEVEL: Total screen brightness can be adjusted
while watching the color pattern.
(
(
e d
buttons)
CONTRAST
0~xx
CONTRAST:
While watching the color pattern,
adjustments can be made so that all
graduations appear. (
adjustments can be made so that all
graduations appear. (
e d
e d
e d
e d
buttons)
AUTO
GAIN CONTROL Menu
AUTO: Every menu option is automatically adjusted
AUTO: Every menu option is automatically adjusted
using the Auto Gain Control function.
MENU 3:
COLOR CONTROL
COLOR CONTROL
CORLOR MODE
sRGB, STD, VIVID
Setting color mode when the ADJUSTMENT Menu is
not displayed.
STD: Displays image with the color tone results from
not displayed.
STD: Displays image with the color tone results from
original scheme of liquid crystal panel.
sRGB: sRGB is international standard of color repre-
sentation specified by IEC (International Elec-
trotechnical Commission). Color conversion is
made in taking account of liquid crystals char-
acteristics and represents color tone close to it
original image.
trotechnical Commission). Color conversion is
made in taking account of liquid crystals char-
acteristics and represents color tone close to it
original image.
VIVID: Displays an image with dynamic and VIVID pri-
mary colors.
WHITE BALANCE
COOL • STD • WARM
(5 levels),
USER R • G • B: 0~100
(5 levels),
USER R • G • B: 0~100
WHITE BALANCE Menu
COOL : Color tone bluer than standard
•
: Color tone slightly bluer than standard
STD
: Color tone standard setting
•
: Color tone slightly redder than standard
WARM : Color tone redder than standard
USER
R-CONTRAST:
e
button for blue-green
d
button for red
G-CONTRAST:
e
button for purple
d
button for green
B-CONTRAST:
e
button for yellow
d
button for blue
MENU 4:
MODE SELECT
MODE SELECT
OSD H-POSITION
(OSD horizontal position)
(OSD horizontal position)
The position of the OSD display can be moved to the
left and right. (
left and right. (
e d
buttons)
OSD V-POSITION
(OSD vertical position)
(OSD vertical position)
The position of the OSD display can be moved up and
down. (
down. (
e d
buttons)
SCALING
(Level of scaling)
(Level of scaling)
LEVEL1, LEVEL2
SCALING (Level of scaling)
Adjusts the image to optimum sharpness when Screen
expansion is taken. (
Adjusts the image to optimum sharpness when Screen
expansion is taken. (
e d
buttons)
INPUT
(Input mode)
(Input mode)
VESA, MAC
When connecting a Power Macintosh, set to [MAC].
(
(
e d
buttons)
400 LINES
(degree of resolution)
(degree of resolution)
640, 720
You can specify the horizonal resolution of a 400 line
screen when using US text, etc. (
screen when using US text, etc. (
e d
buttons)
LANGUAGE
7 countries
DEUTSCH, ENGLISH,
ESPANOL, FRANCAIS,
I TA L IA N O , N ET H ER -
LAND, SVENSKA
DEUTSCH, ENGLISH,
ESPANOL, FRANCAIS,
I TA L IA N O , N ET H ER -
LAND, SVENSKA
LANGUAGE
Messages displayed on the screen and OSD Menu
contents can be changed to the following languages.
contents can be changed to the following languages.
Dutch, English, French, German, Spanish, Italian,
Swedish.
Swedish.
c
Select the item
e d
Bright: 0~31
Adjusting the backlight
POWER OFF
LL-T18A1
DISASSEMBLY AND ASSEMBLY
3 – 1
CHAPTER 3. DISASSEMBLY AND ASSEMBLY
1. SEPARATION OF LCD SECTION AND
BASE SECTION
1.
Remove the hinge cover
1
(5 pawls), remove the four screws
2
, and
remove the base section
3
from the LCD section
4
.
2. LCD MODULE REMOVAL
1.
Remove the three screws
1
and one connector, and remove the front
panel section
3
from the rear panel section
2
. (10 pawls)
2.
Remove the five screws
1
and two connectors, and remove the LCD
section. Remove the eight screws
3
, and remove the LCD module
5
from the LCD brackets (right and left)
4
.
3. I/F PWB REMOVAL
1.
Remove the four screws
1
, and remove the shield plate
3
from the
rear panel section
2
.
2.
Remove the five screws
1
and each connector, and remove the I/F
PWB
3
from the rear panel section
2
.
1
2
3
4
1
2
3
1
1
1
1
3
3
3
3
3
4
4
5
3
1
1
2
3
1
2
3
LL-T18A1
BLOCK DIAGRAM
4 – 1
CHAPTER 4. BLOCK DIAGRAM
LCD UNIT
LAMP
18 inch LCD
LAMP
INVERTER
INTERFACE
UNIT
RGB, H/V
TMDS, DATA, CLOCK
INPUT
KEY-SWITCH UNIT
AC100V
INPUT
AC ADAPTER
(Analog)
(Digital)
18A1 Interface Board Block Diagram
DDC-D
DDC-A
D-Sub
15
gm5120
Flash Memory
F010A
NVRAM
24LC16
LCD
TMDS
H
V
V
RGB
ISP_SDA
14.318MHZ Crystal
PORT B
PORT A
DVI-D
ISP_SCL
L
V
D
S
T
ra
n
s
m
itte
r
r
Back-light
LL-T18A1
BLOCK DIAGRAM
4 – 2
■
■
■
■
UNIT TERMINAL
1
1
1
1
J1 (LVDS TO LCD PANEL)
Used Connector : HEADER_15
u
2/SM
2
2
2
2
JP2 (TO KEY SWITCH BOARD TERMINAL)
Used Connector : PH_9
3
3
3
3
JP3 (TO INVERTER TERMINAL)
Used Connector : PH_6
4
4
4
4
CJP4 (POWER SUPPLY INPUT TERMINAL FORM
AC ADAPTER)
Uesd Connector : POWER_JACK20_B
5
5
5
5
CN1(ANALOG SIGNAL INPUT TERMINAL)
Used Connector : D-sub 15P (WIESON)
6
6
6
6
CN2 (DIGITAL SIGNAL INPUT TERMINAL)
Used Conector : DVI-D 24P (FOXCONN)
Pin No.
Symbol
Functin
1
FR0P
LVDS differential data
2
FR1P
LVDS differential data
3
FR0M
LVDS differential data
4
FR1M
LVDS differential data
5
FR2P
LVDS differential data
6
FR3P
LVDS differential data
7
FR2M
LVDS differential data
8
FR3M
LVDS differential data
9
FCLKP
LVDS differential clock
10
LCDS_GND
GND
11
FCLKM
LVDS differential clock
12
SR0P
LVDS differential data
13
LCDS_GND
GND
14
SR0M
LVDS differential data
15
SR1P
LVDS differential data
16
SR2P
LVDS differential data
17
SR1M
LVDS differential data
18
SR2M
LVDS differential data
19
SR3P
LVDS differential data
20
SCLKP
LVDS differential clock
21
SR3M
LVDS differential data
22
SCLKM
LVDS differential clock
23
OPEN
24
GND
GND
25
GND
GND
26
GND
GND
27
GND
GND
28
VCC_LCD
+12V Power Supply
29
VCC_LCD
+12V Power Supply
30
VCC_LCD
+12V Power Supply
Pin No.
Symbol
Functin
1
DOWN
Down
2
SELECT
Select
3
MENU
Menu
4
SOURCE_SEL
Input
5
UP
Up
6
SOFT_START
Soft Power
7
LED_AMBER
LED Orange
8
LED_GREEN
LED Green
9
GND
GND
Pin No.
Symbol
Functin
1
+12V
+12V IN
2
+12V
+12V IN
3
GND
GND
4
GND
GND
5
BL_PWM
Brighness Control
6
BL_ON_OFF#
Back Light ON/OFF
Pin No.
Symbol
Functin
1
GND
GND
2
+12V
+12V IN
3
GND
GND
Pin No.
Symbol
Functin
1
R_IN
Analog RED Signal
2
G_IN
Analog GREEN Signal
3
B_IN
Analog BLUE Signal
4
GND
GND
5
GND
GND
6
GND
GND
7
GND
GND
8
GND
GND
9
A_DDC_+5V
DDC
10
GND
GND
11
GND
GND
12
VGA_SDA
DDC
13
VGA_HS
H-SYNC
14
VGA_VS
V-SYNC
15
VGA_SCL
DDC
Pin No.
Symbol
Functin
1
D2-
TMDS differential data
2
D2+
TMDS differential data
3
D2/4
GND
4
D4-
TMDS differential data
5
D4+
TMDS differential data
6
DDC CLK
DDC clock
7
DDC DATA
DDC data
8
VSYNC
V-SYNC
9
D1-
TMDS differential data
10
D1+
TMDS differential data
11
D1/3
GND
12
D3-
TMDS differential data
13
D3+
TMDS differential data
14
+5V
+5V
15
GNDA
GND
16
PLUG
Hot Plug Detect
17
D0-
TMDS differential data
18
D0+
TMDS differential data
19
D0/5
GND
20
D5-
TMDS differential data
21
D5+
TMDS differential data
22
TMDS CLK
GND
23
TMDS CLK+
TMDS differential clock
24
TMDS CLK-
TMDS differential clock
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