Sharp LL-T15G4 Service Manual ▷ View online
CODE : 00Z
q
SERVICE MANUAL
CONTENTS
Parts marked with "
!
" 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.
SHARP CORPORATION
LLT15G4SME
LCD MONITOR
LL-T15G4-H
MODEL
LL-T15G4-B
CHAPTER 1. OUTLINE OF THE PRODUCT,
NOMENCLATURE AND FUNCTION . . . . . . . . . . . . . . . . . .1 - 1
CHAPTER 2. CONNECTION, ADJUSTMENT, OPERATION,
AND FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 1
CHAPTER 3. DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . .3 - 1
CHAPTER 4. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 1
CHAPTER 5. BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 - 1
CHAPTER 6. CIRCUIT DIAGRAM AND PWB LAYOUT . . . . . . . . . . . . . .6 - 1
Model Name
Product Name
Color
For USA
For Other
LL-T15G4H
LL-T15G4U
LL-T15G4E
IVORY
LL-T15G4B
LL-T15G4Y
LL-T15G4P
Black
LL-T15G4-H/LL-T15G4-B
OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION
1 – 1
CHAPTER 1. OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION
1. SPECIFICATIONS
■
PRODUCT SPECIFICATIONS
■
DIMENSIONS (UNITS: MM)
• Analog signal cable: approx. 1.8 m
• Audio cable: approx. 1.8 m
• Digital signal cable, NL-C04J (purchased separately): approx. 2.0 m
Note: As a part of our policy of continuous improvement, SHARP reserves
the right to make design and specification changes for product
improvement without prior notice. The performance specification fig-
ures indicated are nominal values of production units. There may be
some deviations from these values in individual units.
improvement without prior notice. The performance specification fig-
ures indicated are nominal values of production units. There may be
some deviations from these values in individual units.
■
RELEVANT SIGNAL TIMINGS (ANALOG)
• Recommended resolution is 1024 x 768.
• All are compliant only with non-interlaced.
• Frequencies for Power Macintosh are reference values.
• 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.
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.
■
THE ANALOG RGB INPUT CONNECTOR PIN
■
RELEVANT SIGNAL TIMINGS (DIGITAL)
Model name
LL-T15G4-H (Ivory)/LL-T15G4-B (Black)
LCD display
38 cm measured diagonally/TFT LCD module
Resolution (max.)
XGA 1024 x 768 pixels
Displayable colors
(max.)
(max.)
Approx.16.19 million colors (6bit + FRC)
Brightness (max.)
260cd/m
2
Dot pitch
0.297 (H) x 0.297 (V) mm
Contrast ratio
350 : 1
Angle of visibility
Left-right 160°; Up-down 150°
(contrast ratio
(contrast ratio
u
5)
Screen display size
Horizontal 304.1 mm x Vertical 228.1 mm
Video signal
Analog : Analog RGB (0.7Vp-p) [75
Ω
]
Digital
: DVIstandard baced on 1.0
Sync signal
Separate Sync (TTL level: +/-), Sync onGreen,
Composite Sync (TTL level: +/-)
Composite Sync (TTL level: +/-)
Expansion
compensation
compensation
Digital screening
(Enlargement VGA/SVGA etc. to full screen size.)
Plug & Play
VESA DDC1/DDC2B compatible
Power management
VESA : based on DPMS
DVI
DVI
: based on DMPM
Speaker output
1 W + 1 W
Input signal terminal
Analog : Mini D-sub15 pin (3 row)
Digital : DVI-D24 pin
Digital : DVI-D24 pin
Audio input terminal
Mini stereo jack
Headphone terminal
Mini stereo jack
Screen tilt
Upward approx.0 - 25°; downward approx.0 - 5°
Power supply
AC100 - 240V, 50/60Hz (Use special AC
adapter, type NL-A53J of Sharp Corporation.)
adapter, type NL-A53J of Sharp Corporation.)
Temperature of
operatingm environment
operatingm environment
5 - 35°C
Power consumption
Maximum 23W (With no audio input)
(26 W maximum, 2 W when in power-saving
mode)
(26 W maximum, 2 W when in power-saving
mode)
Dimensions
Approx. 340.5 (W) x 194 (D) x 336.5 (H) mm
Weight
Approx. 3.6kg (approx. 2.9kg excluding stand)
(Excluding AC cables.)
(Excluding AC cables.)
340.5
60
194
200
336.5
308
Display mode
Hsync
Vsync
Dot frequency
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
US text
720 x 400
31.5kHz
70Hz
28.3MHz
Power
Macintosh
series
Macintosh
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
No.
Function
No.
Function
1
Red video signal input
9
+5V
2
Green video signal input
10
GND
3
Blue video signal input
11
N.C.
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
Display mode
Hsync
Vsync
Dot frequency
VESA
640 x 480
31.5kHz
60Hz
25.175MHz
37.9kHz
72Hz
31.5MHz
37.5kHz
75Hz
31.5MHz
800 x 600
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
US TEXT
720 x 400
31.5kHz
70Hz
28.3MHz
(Mini D-sub connector with15pins)
1
2
3
4
5
11
12
13
14
15
6
7
8
9
10
LL-T15G4-H/LL-T15G4-B
OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION
1 – 2
• Recommended resolution is 1024 x 768.
• All are compliant only with non-interlaced.
• A computer with an output terminal conforming to DVI (DVI-D24 pin or
DVI-I29 pin) and with XGA output capability can be connected here.
Depending on the type of computer to be connected, the display may not
work correctly.
Depending on the type of computer to be connected, the display may not
work correctly.
• 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.
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.
■
THE DVI-D INPUT CONNECTOR PIN
■
POWER MANAGEMENT
The monitor is based on the VESA DPMS and the DVI DMPM standards.
To activate the monitor's power management function, both the video
card and the computer must conform to the VESA DPMS standard and
the DVI DMPM standard.
To activate the monitor's power management function, both the video
card and the computer must conform to the VESA DPMS standard and
the DVI DMPM standard.
DPMS: Display Power Management Signaling
DMPM: Digital Monitor Power Management
■
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 sys-
tems. This monitor works with DDC1 and DDC2B.
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 sys-
tems. This monitor works with DDC1 and DDC2B.
2. PRODUCT DESCRIPTION
No.
Function
No.
Function
1
TMDS data 2-
13
N.C.
2
TMDS data 2+
14
+5V
3
TMDS data 2 shield
15
GND
4
N.C.
16
Hot plug detection
5
N.C.
17
TMDS data 0-
6
DDC clock
18
TMDS data 0+
7
DDC data
19
TMDS data 0 shield
8
N.C.
20
N.C.
9
TMDS data 1-
21
N.C.
10
TMDS data 1+
22
TMDS clock shield
11
TMDS data 1 shield
23
TMDS clock +
12
N.C.
24
TMDS clock -
DPMS mode
Screen
Power
consumption
H-sync
V-sync
ON
Display on
26W
Yes
Yes
STANDBY
Display off
2W
No
Yes
SUSPEND
Yes
No
OFF
No
No
DPMS mode
Screen
Power
consumption
ON
Display on
26W
OFF
Display off
2W
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24
(DVI-D connector 24 pins)
1
INPUT button
: To switch between the signal's input terminals.
2
MENU button
: This button is used to pop-up, select and
close the OSD (On Screen Display) Menu.
3
c
/MODE button
: When the OSD Menu is displayed: This button
is used to select menu options.
When the OSD Menu is not displayed: This
button is used to set DISPLAY MODE.
4
e d
buttons
: When the OSD Menu is displayed: These
buttons are used to select an option or
adjust the value of the selected option.
adjust the value of the selected option.
When the OSD Menu is not displayed:
These buttons are used to adjust backlight
brightness and speaker volume.
brightness and speaker volume.
5
Power LED
: This LED is lit green when in use and orange
when in power-saving mode.
6
Power button
: Pressing this button turns the power on. (After
turning the power on, it may take a little time
before an image appears on the screen.)
Press the button again to turn the power off.
7
Speakers
: Audio entering via the external device con-
nected to the monitor can be heard.
8
Power terminal
9
DVI-D input terminal : The computer's digital RGB output terminal
can be connected here.
The separately-sold cable (NL-C04J) is nec-
essary for connection.
essary for connection.
It can be connected to a computer with a
DVI-compatible output terminal (DVI-D24
pin or DVI-I29 pin) and which has XGA out-
pin or DVI-I29 pin) and which has XGA out-
put ability. Depending on the computer to be
connected, correct display may or may not
be possible.
be possible.
F
Analog RGB
input terminal
: The analog signal cable is connected here. The
analog signal cable included should be used.
G
Audio input terminal : A computer's audio output terminal can be
connected here. The audio cable included
should be used.
H
Headphone terminal : Headphones (commercially available) can
be connected here.
I
Security lock anchor : By connecting a security lock (commercially
available) to the security lock anchor, the monitor
is fixed so that it cannot be transported.
The security slot works in conjunction with
The security slot works in conjunction with
Kensington Micro Saver Security Systems.
J
Ventilation openings : Note:Never block the ventilation openings as
this may lead to overheating inside the
monitor and result in malfunction.
FRONT
REAR
1
7
2
3
4
5 6
8
9 10 11 12
13
14
LL-T15G4-H/LL-T15G4-B
OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION
1 – 3
■
STANDING UP AND ADJUSTING THE MONITOR
Caution: • Be sure to hold both sides of the monitor when adjusting the view-
ing angle. The LCD panel used in this monitor is made of glass.
Pressure from hands on the LCD panel could cause damage.
Pressure from hands on the LCD panel could cause damage.
• Be careful not to allow your fingers to be pinched.
• Not to fold up the monitor attaching the cable as this could
lead to a malfunction.
Standing up the monitor
1.
Press down on the stand and lift up the top section of the monitor.
• When raising the display section, movement becomes harder in the
middle of travel.
Continue raising by applying more force at that point.
• Raise the display section until it stops. (when tilted forward approx. 5°)
2.
Adjust to an easy to view angle.
Angle adjustment
Press down on the stand and adjust it to a suitable viewing angle.
• Do not use the monitor when tilted back beyond approximately 25°.
The monitor may fall over leading to injury or malfunction.
Folding up the monitor
1. Remove the cables.
2. Press down on the stand and gently fold back the monitor.
approx. 5
approx. 25
approx. 5
approx. 5
Prohibited range
approx. 25
