LL-T1500A (serv.man14). Chapter 3 Connection, Adjustment, Operation Function - Sharp Monitor Service Manual (repair manual)

ll-t1500a (serv.man14) service manual
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LL-T1500A (serv.man14)
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6
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Service Manual
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Monitor / Chapter 3 Connection, Adjustment, Operation Function
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ll-t1500a-sm14.pdf
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Read Sharp LL-T1500A (serv.man14) Service Manual online

CHAPTER 3. CONNECTION, ADJUSTMENT, OPERATION AND FUNCTIONS
[1] CONNECTING POWER SUPPLY AND
COMPUTER
·
Make sure both the LCD monitor and computer are OFF.
Connect the signal cable to the analog output terminal of the
computer. Make sure to tighten the connector screws of the cable.
Connect the power supply cable to the wall outlet.
Turn on the main power switch of the monitor and then turn on the
computer power switch.
When the monitor power switch is turned on, the green power-on
lamp comes on and the screen appears. Adjust the screen 
 Automatic screen adjustment
After using the monitor, turn off the main power switch.
Rear view
[CAUTION]
·
When removing the power cable, make sure that both the com-
puter and the monitor are OFF and hold the connector, but not the
cable.
·
When you are going to connect the monitor to a Power Macintosh
machine, you might need to a commercial Macintosh conversion
adapter.
Upper fluorescent lamp lead wire
Screw A (upper)
Cover
Tape
Screw A (lower)
Lower fluorescent lamp
lead wire
Fig. 2
CN2
Cover
CN2
CN1
LCD module : VVLQ150X1DH10
Lamp umit    : DUNTH2162TPZZ 
To the computer
Signal cable
To the AC outlet
Power cord
[2] CONNECTING USB CABLE
Rear view
This monitor comes equipped with a hub that supports USB standard.
The USB hub needs the following conditions:  
·
The computer to which the USB hub is connected and its OS are
compatible with USB standard.
·
Or, the USB hub to which this USB hub is connected is also
connected to a USB-compatible computer (and OS).
When connecting any USB device to this monitor, use the USB cable
supplied with the monitor and observe the following conditions:
Connect the down-stream of a USB-compatible computer (or other
USB hub) with the up-stream of this monitor using the USB cable.
Connect the USB-compatible peripheral device to the USB down-
stream of the monitor.
[CAUTION]
Some USB peripheral devices might function properly depending
upon the type of computer, OS or peripheral equipment. For whether
the device you want to connect is USB compatible or not, consult the
manufacturer of the device.
The USB device connected to the USB connector of the monitor
operates when the main power supply is ON, even if the monitor is in
the power save mode or if the power switch on the front part of the
monitor is OFF.
USB-related specifications
USB standard
Rev. 1.0 complicd self-powered hub
Down-stream supply power 500 mA for each port (MAX.) 
USB port
Up-stream x 1 (rear part), down-
stream x 2 (side part)
[3] ADJUSTMENT
3-1. AUTOMATIC SCREEN ADJUSTMENT
When the monitor is set up for the first time or when the system
setting is changed, make automatic screen adjustment.  "CLOCK",
"PHASE" and "V-POs" are automatically adjusted to optimal values.
When making automatic screen adjustment, make sure that the entire
screen is bright. 
Carry out automatic screen adjustment as follows:
Press the MENU button once. The [MENU1 ] appears on screen.
Select MANUAL on the [ADJUSTMENT] screen.
Press the   button to select AUTO.
The screen becomes dark and  ADJUSTING  appears on screen.
A few seconds later, the screen becomes bright again and the
MENU 1 appears on screen.
The automatic screen adjustment has been thus completed.
Usually, you can use the monitor properly after carrying out automatic
screen adjustment .  However, if you feel it necessary to fine-tune the
screen, use the adjustment diskette supplied with the monitor and
adjust the screen manually.
For the procedure for adjusting the screen manually, refer to the Fine
adjustment of the screen.
[CAUTION]
·
If the entire screen is extremely dark, you might not be able to
perform automatic screen adjustment in some modes. In such a
case, the message  OUT OF ADJUST  appears  on  screen,  and
the settings remain unchanged.
Use the adjustment diskette supplied with the monitor or switch
the screen so that the entire screen looks bright and perform
automatic screen adjustment again.
·
If the video signal from the computer is the composite sync or
sync-on-green, the screen might be adjusted properly after carry-
ing out automatic screen adjustment. In such a case, fine adjust
the screen manually.
USB Downstream ports
USB
Upstream port
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Menu screen appears again.
ADJUSTING appears
Menu 1
Menu 1
cccccccccccccccccccccccccccccccccccccccccccccccccccc
@ZapfDingbats, Sffont, RingWorld3
3-2. MANUAL SCREEN ADJUSTMENT
If fine adjustment of the screen is necessary, use the adjustment
diskette (for Windows) supplied with the monitor to adjust the screen
manually. If you want to fine adjust computers whose OS is other
than Windows, follow the instructions on the screen. 
1. OUTLINE OF ADJUSTMENT
Every time the MENU button is pressed, the screen is switched
over as follows:
It changes.
On all the MENU screens, the resolution of the input signal, vertical
synchronizing frequency (V), horizontal synchronizing frequency
(H) appear at the lower part of the screen in rough values. 
The values of "R-CON, G-CONT. B-CON" on the MENU 3 screen
are indicated only when "WHITE BALANCE" is in the USER.
On the MENU 4 screen, you can select menu options, but the
display status might not change, depending upon the resolution of
the input signal.
Select the menu option you want to adjust, using the SELECT
button. Every time the button is pressed, the highlight moves
downward.
Adjust or switch over using   or   button.
[CAUTION]
If the button operation is suspended for about 15 seconds dur-
ing adjustment, the menu on screen will disappears.
Screen adjustment needs to be performed whenever the screen
mode (resolution, refresh rate and others) has been changed. The
adjustment results are automatically stored in memory and effective
after the power is turned off. Therefore, once the screen is adjusted
properly, there is no need to adjust the screen every time you use the
monitor.
2. HOW TO USE ADJUSTMENT PROGRAM
The following explanation is written on the assumption that the OS
is Windows 95/98.
In addition, the floppy disk drive is assumed to be drive A.
START
Insert the "Adjustment diskette" supplied with the monitor into
drive A.
Open "3.5" FD (A:)" in the "My computer".
(In the case of Windows 3.1, open the "File manager" and
select drive A.
Double click "Adj_Uty.exe" to start the adjustment program.
ADJUSTMENT
The adjustment pattern as shown on the right sketch appears
on screen and adjust, following the instructions on the screen.
END
When the adjustment is completed, press  ESC  key on the
keyboard to exit the adjustment program.
[CAUTION]
If your computers display mode is 65000 colors, the gradation of each
color of the color pattern might look different or gray scales look
tinted. It is not a problem, but due to the specification of the input
signal.
3. ADJUSTMENT ITEMS
[MENU 1] ADJUSTMENT
Adjust "CLOCK", 2PHASE", "H-POs" and V-POs".
MANUAL: Adjust manually. (Select the adjustment item you want
to adjust using the SELECT button.)
AUTO:
The automatic screen adjustment function works to ad-
just "CLOCK", "PHASE", "H-POs" and "V-POs" auto-
matically to optimal values. 
During the adjustment, the screen becomes dark and
indicates ADJUSTING.
Menu 1 (ADJUSTMENT)
Menu 2 (GAIN CONTROL)
Menu 3 (WHITE BALANCE)
Menu 4 (MODE SELECT)
Menu is deleted.
Menu 1
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Menu 2
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Color pattern
Display frame
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lines alternate.
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CLOCK
Adjust the pattern that white and black lines alternate so that there
is a noise (vertical stripe), using   or   button.
PHASE
Adjust the pattern that white and black lines alternate so that the
horizontal stripe noise is reduced to minimum and that the white
and black pattern looks clear, using the   or   button. 
H-POS
You can move the screen to the right by pressing the   button and
to the left by pressing the   button.  Adjust the horizontal position
of the screen so that both the right and left frame lines of the
pattern appear on screen.
V-POS
You can move the screen upward by pressing the 
button and
downward by pressing the
 button. Adjust the vertical position of
the screen so that both the top and bottom frame lines of the
pattern appear on screen.
Make sure to adjust "CLOCK" properly before proceeding with the
adjustment of "PHASE".
[MENU 2] GAIN CONTROL
Adjust the brightness and contrast of the screen.
The monitor is factory adjusted properly.  However, it might need to
be adjusted depending upon the type of computer to which the moni-
tor is connected. Adjust the brightness and contrast, observing the
color pattern of the adjustment program.
MANUAL: Adjust manually. (Select adjustment options using the
SELECT button.)
AUTO:
The auto gain control function works to adjust the bright-
ness and contrast automatically to optimal values.
The auto gain control function adjust the brightness and contrast
based on the brightest color being displayed on the screen. If you
use this function without displaying the adjustment pattern on
screen, at least a 5 mm x 5 mm white area needs to be displayed
on screen. If not, you might not be able to make the adjustment. In
such a case, the message  OUT OF ADJUST  appears  on  screen
and the settings remain unchanged.
To execute the auto gain control function, set to the "COOL, STD,
WARM" mode on the "MENU 3. WHITE BALANCE" screen. If the
monitor is in the USER mode, the auto gain control won’t work.
BRIGHT (brightness)
Adjust the brightness of the entire screen.
The screen becomes brighter by pressing 
button and darker by
pressing the   button.
You can also adjust the brightness of the light source (back-
light) of the LCD monitor. For more information, see "Adjusting
backlight brightness."
CONT (contrast)
Adjust the contrast on the color pattern screen on the adjustment
program so that all gradations can be displayed.  The contrast
becomes stronger by pressing the   button and weaker by press-
ing the   button.
COLOR (number of displayable colors)
Set the maximum displayable colors (1,6190,000 colors or
260,000 colors)
[MENU 3] WHITE BALANCE
Adjust the color of the screen.
The monitor is factory adjusted properly about the color of the screen,
and thus there is not necessary to adjust it. If adjustment of the white
balance is required for any reason, select the adjustment options
using the SELECT button and adjust it.
COOL - STD - WARM
You can select the color you want from among the 5 preset
modes.
COOL :
Bluish than the standard setting.
  :
A little bluish than the standard setting.
STD :
Standard setting
  :
A little reddish than the standard setting
WARM : Reddish than the standard setting
Horizontal stripes-like noise
Horizontal stripes-like noise
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Here you can read online and download Sharp LL-T1500A (serv.man14) Service Manual in PDF. LL-T1500A (serv.man14) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp LL-T1500A (serv.man14) Monitor. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.