Read Sharp LL-191A Service Manual 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
LL191AUSME
LCD MONITOR
MODEL
LL-191A-W/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. BLOCK DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1
CHAPTER 5. HARDWARE DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
CHAPTER 6. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 1
CHAPTER 7. CIRCUIT DIAGRAM & PWB LAYOUT . . . . . . . . . . . . . . . . 7 - 1
MODEL Name
Product Name
Color
For U.S.A
For Other
LL-191A-W
LL-191AU
LL-191AE
White
LL-191A-B
LL-191AY
LL-191AP
Black
LL-191A-W/B
OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION
1 – 1
CHAPTER 1. OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION
1. SPECIFICATIONS
■
PRODUCT SPECIFICATIONS
• Model name
LL-191A-W (White)/LL-191A-B (Black)
• LCD display
48 cm measured diagonally TFT LCD module
• Resolution (max.)
SXGA 1280 x 1024 pixels
• Displayable colors (max.)
Approx.16.19 million colors (6 bit + FRC)
• Brightness (max.)
220 cd/m
2
• Dot pitch
0.294 (H) x 0.294 (V) mm
• Contrast ratio
500 : 1
• Angle of visibility
Left-right 160 °; up-down 160 ° (contrast ratio > 5)
• Screen display size
Horizontal 376.3 mm x Vertical 301.1 mm
• Video signal
Analog RGB (0.7 Vp-p) [75
Ω
]
• Sync signal
Separate Sync (TTL level: +/-), Sync on
Green, Composite Sync (TTL level: +/-)
• Expansion compensation
Digital scaling (Enlarges VGA/SVGA/XGA etc. to full screen size.)
• Plug & Play
VESA DDC1/DDC2B compatible
• Power management
VESA: based on DPMS
• Speaker output
1W + 1W
• Input signal terminal
Mini D-sub15 pin (3 row)
• 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
• Temperature of operating environment
5 - 35°C
• Power consumption
33W (With no audio input)
(36W maximum, 1.8W when in power-saving mode)
(36W maximum, 1.8W when in power-saving mode)
• Dimensions
Approx. 419 (W) x 213 (D) x 409 (H) mm
• Weight
Approx. 7.8 kg (approx. 5.7 kg excluding stand) (Excluding cables.)
■
DIMENSIONS (UNITS: MM)
• Analog signal cable: approx. 1.8m
• Audio cable: approx. 1.8m
■
SIGNAL TIMINGS
• Recommended resolution is 1280 x 1024.
• All are compliant only with non-interlaced.
• Frequencies for Power Macintosh and the Sun Ultra series are reference val-
ues. 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.
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.
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
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
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
1152 x 870
68.7kHz
75Hz
100.0MHz
1280 x 1024
64.0kHz
75Hz
108.0MHz
80.0kHz
60Hz
135.0MHz
Sun Ultra
series
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
419
74
259
213
409
362
LL-191A-W/B
OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION
1 – 2
■
THE ANALOG RGB INPUT CONNECTOR PIN
■
POWER MANAGEMENT
The monitor is based on VESA DPMS (Display Power Management Sig-
naling).
naling).
To activate the monitor's power management function, both the video
card and the computer must conform to the VESA DPMS standard.
DPMS: Display Power Management Signalling
■
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
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.
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
■
ANGLE ADJUSTMENT, HEIGHT ADJUSTMENT
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.
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
DPMS mode
Screen
Power
consumption
H-sync
V-sync
ON
Display on
36W
Yes
Yes
STANDBY
Display off
1.8W
No
Yes
SUSPEND
Yes
No
OFF
No
No
(Mini D-sub connector with 15 pins)
5
1
2
3
4
10
6
7
8
9
15
11
12
13
14
1
AUTO button This button is used to perform automatic adjustment
of the screen (CLOCK, PHASE, H-POS and V-POS).
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.
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.
When the OSD Menu is not displayed: These buttons are
used to adjust backlight brightness and speaker volume.
are used to select an option or 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.
5
Speakers
Audio entering via the external device connected to
the monitor can be heard.
the monitor can be heard.
6
Headphone
terminal
terminal
Headphones (commercially available) can be
connected here.
connected here.
7
Power button Pressing this button turns the power on. Press the
button again to turn the power off.
8
Power LED
This LED is lit green when in use and orange when in
power-saving mode.
power-saving mode.
9
Main power switch
F
Power terminal
G
Analog RGB
input terminal
input terminal
The analog signal cable is connected here.
The analog signal cable included should be used.
The analog signal cable included should be used.
H
Audio input
terminal
terminal
A computer's audio output terminal can be connected
here. The audio cable included should be used.
here. The audio cable included should be used.
I
Security lock
anchor
anchor
By connecting a security lock (commercially avail-
able) to the security lock anchor, the monitor is fixed
so that it cannot be transported.
The security slot works in conjunction with Kensing-
ton Micro Saver Security Systems.
able) to the security lock anchor, the monitor is fixed
so that it cannot be transported.
The security slot works in conjunction with Kensing-
ton Micro Saver Security Systems.
J
Ventilation
openings
openings
Never block the ventilation openings as this may lead
to overheating inside the monitor and result in
malfunction.
to overheating inside the monitor and result in
malfunction.
Operation panel
3
4
1
2
7
8
5
5
6
9
F
G
I
J
H
approx. 5
approx. 25
LL-191A-W/B
CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS
2 – 1
CHAPTER 2. CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS
1. CONNECTING THE MONITOR AND TURNING THE MONITOR ON AND OFF
1-1. CONNECTING THE MONITOR TO A COMPUTER
Connect the accessory analog signal cable to the analog RGB output
terminal of the computer.
• Paying attention to connector direction, firmly insert the signal cable
vertically into the connector, and then tighten the screws at both
sides.
sides.
If connecting to a D-sub15 pin 2 row Apple Power Macintosh, attach a
Macintosh conversion adapter (commercially available) to the analog
signal cable.
Note:
• If connecting to the Sun Ultra series, a conversion adapter (com-
mercially available) may be required.
■
Connect the accessory audio cable
When the accessory audio cable is connected to the audio output termi-
nal of the computer, the sound of the connected computer is output
from the monitor speakers. You can also use the headphone jack of the
from the monitor speakers. You can also use the headphone jack of the
display.
■
Connection of headphones (commercially available)
Headphones (commercially available) can be connected.
Note:
• When the headphones are connected, no sound can be heard from
the monitor speakers.
• Use headphones with a cable less than 3 m in length.
■
Connecting the monitor to a power source
Analog RGB terminal
(Mini D-sub 15 pin, 3 row)
(Mini D-sub 15 pin, 3 row)
Analog RGB terminal
(Mini D-sub 15 pin, 3 row)
(Mini D-sub 15 pin, 3 row)
Analog signal cable
Macintosh conversion adapter
Audio input terminal
Audio output terminal
Audio cable
Headphone terminal
Headphones
Power terminal
Power cord
AC outlet
