How it Works
Daewoo
Loading...
HL720D
Service Manual
37 pgs4.43 Mb0

Daewoo HL720S, HL720D Service Manual

LCD MONITOR
OCT. 2006
HL720S / HL720D
OSHL720001
HL720S/D Service Manual
Contents
HL720S/D ......................................................................................................................................4
PRECAUTIONS .....................................................................................................................4
ITEMS ....................................................................................................................................6
HOW TO CONNECT THE SEVERAL CABLES TO THE LCD MONITOR ............................7
▶ HL720S/D Cable Connections ..................................................................................7
ADJUSTING THE MONITOR.................................................................................................8
▶ HL720S/D The Function Control Buttons..................................................................8
▶ How to use the function Key......................................................................................8
HL720S/D SPECIRICATIONS ...............................................................................................9
▶ HL720S Specirications ..............................................................................................9
DISPLAY MODES ................................................................................................................10
PowerSaver..........................................................................................................................10
OSD MENU..........................................................................................................................11
▶ Menu Tree ............................................................................................................... 11
FACTORY SET ....................................................................................................................12
BURN-IN MODE ..................................................................................................................12
TROUBLESHOOTING .........................................................................................................13
▶ No operating at all ...................................................................................................13
▶ Doesn’t display on LCD...........................................................................................14
EXPLODE VIEW ..................................................................................................................16
▶ HL720S/D ................................................................................................................16
PART LIST............................................................................................................................17
▶ HL720S/D Mechanical Part List ..............................................................................17
▶ HL720S/D AD B/D Part List.....................................................................................18
▶ HL720S FUNCTION B/D Part List...........................................................................21
▶ Inverter & POWER BD Part List(FLF1742-20A) .....................................................22
▶ Inverter & POWER BD Part List(FLF1742-20A) .....................................................23
BLOCK DIAGRAM.............................................................................................................24
HL720S/D Schematic...........................................................................................................25
▶ AD B/D(HL720S/D)..................................................................................................25
▶ Inverter & POWER B/D(FLF1742-20A)...................................................................30
PCB Layout ..........................................................................................................................32
▶ AD B/D TOP SILK (HL720S/D) ...............................................................................32
▶ AD B/D TOP PATTERN (HL720S/D).......................................................................33
▶ AD B/D BOTTOM SILK (HL720S/D) .......................................................................34
▶ AD B/D MASK TOP (HL720S/D).............................................................................35
HL720S/D Service Manual
▶ AD B/D MASK BOTTOM (HL720S/D).....................................................................36
▶ FUNC B/D TOP SILK (HL720S/D) ..........................................................................37
▶ FUNC B/D TOP PATTERN (HL720S/D)..................................................................37
HL720S/D Service Manual
HL720S/D
PRECAUTIONS
Plug the power cord into a properly grounded outlet.
There is the risk of electric shock.
If you hear a noise or smell smoke from the computer or adaptor, unplug the power
cord immediately, and call the service center.
There is the risk of electric shock or fire.
Do not overload an electrical outlet with too many devices.
There is the risk of fire.
Do not unplug from the outlet by pulling the power cord or when your hands are wet.
There is the risk of electric shock or fire.
Do not bend the power cord excessively or place heavy objects on it. Keep children
and pets away from the power cord as they may damage the power cord. There is the
risk of electric shock or fire.
Do not use a damaged power cord or plug. Make sure the plug fits snugly into the
outlet.
There is the risk of electric shock or fire.
Do not expose the monitor to the direct sun light.
Do not block the fan louvers.
There is the risk of fire or damage to the monitor.
Do not attempt to disassemble, fix, or modify the monitor.
There is the risk of electric shock or fire.
Keep the monitor away from high temperature, humidity, and dust.
Operating environment = 0 ~ 40 Degrees Celsius
Operating environment = 30 ~ 80 Relative Humidity
Do not allow any object or liquid to enter inside the monitor.
There is the risk of electric shock, fire, or damage to the monitor.
HL720S/D Service Manual
Use a proper voltage/current level indicated.
Do not clean the LCD with abrasive chemicals.
There is the risk of damage to the LCD.
Do not scratch and damage the LCD with sharp objects.
Keep the monitor away from objects and electrical appliances that may generate
electromagnetic fields.
Place the monitor on a flat, stable surface.
The monitor may fall and there is the risk of damage or injury.
Unplug the power cord when the monitor is not in use for a prolonged period of time.
Make sure the power cord is unplugged.
Do not spill or pour liquid on the monitor.
Cleaning the LCD panel
1. Use a clean, soft cloth to wipe off dust from the LCD.
2. If still not clean, wipe the LCD with a clean soft cloth with a small amount of glass
cleaner without alcohol or ammonia.
Caution
Do not use alcohol or ammonia based cleaning products. Abrasive chemicals, such as
alcohol or ammonia, may damage the monitor. The company is not responsible for the
damages to the monitor caused by the use of alcohol or ammonia based cleaning products.
HL720S/D Service Manual
ITEMS
24-pin DVI Cable : *1
*1 : Only DVI Model
HL720S/D Service Manual
HOW TO CONNECT THE SEVERAL CABLES TO THE LCD MONITOR
▶ HL720S/D Cable Connections
POWER ANALOG DVI-D
Name Cable connections
1 POWER CORD
2 15-PIN D-SUB SIGNAL CABLE
3 24-PIN DVI-D SIGNAL CABLE *1
*1 : Only DVI Model
HL720S/D Service Manual
ADJUSTING THE MONITOR
▶ HL720S/D The Function Control Buttons
▶ How to use the function Key.
Button Function
MEMU 1. First click : The OSD main menu appears.
2. Second click : The OSD main menu disappears.
SELECT 1. Select a command function.
DOWN Down : 1. Move the on-screen highlighted command item to the next
one.
2. Decrease the current value.
UP/AUTO UP : 1. When you push Auto button,this will optimize quality automati-
cally.
2.Move the on-screen highlighted command item to the Previous
one.
3.Increase the current option value.
MWE Media Window Enhancement
HL720S/D Service Manual
HL720S/D SPECIRICATIONS
▶ HL720S Specirications
Panel Specification
Panel Type
HT170EX1-101 or other
Panel Dimension
354.9 (H) x 290.3 (V) x 13.0(D) mm typ.
Screen diagonal
17.0 inches [337.92 (H) x 270.336 (V)mm
Pixel pitch
0.264mm x 0.264mm
Pixel format
1280(horizontal) x 1024 (Vertical) Pixels
RGB stripe arrangement
Color depth
8bit (16,777,216 colors)
Right 75(Typ.)
H
Left 75(Typ.)
Up 75(Typ.)
Viewing angle (Deg)
V
Down 60(Typ.)
Response Time
8 ms
Contrast ratio
700 : 1(typ.)
Average brightness
300 cd/m2 (typ.)
Cross talk
Horizontal: 2.0%(Max.), Vertical:2.0%(Max.)
Vertical Sync (Frame
rate)
60Hz(typ.), 75Hz(Max)
Horizontal Sync
31.5 ~ 80KHz
Dclk
54MHz(Typ.),68MHz(Max.)
Electrical Interface
LVDS
Monitor’s specification
Resolution
Recommend: 1280x1024@60Hz
Max. : 1280x1024@75Hz
Frequency
Horizontal: 31.5 ~ 80 KHz
Vertical : 56 ~ 75 Hz
Sync. Signal
TTL, P. or N.
OSD Control
Power,Menu,Select,Down,Up/Auto,MWE
HL720S/D Service Manual
-10-
DISPLAY MODES
※ The optimal resolution is 1024Ⅹ768@60㎐(HL510S)
※ The optimal resolution is 1280 1024Ⅹ @60㎐(HL720S)
PowerSaver
HL720S/D Service Manual
-11-
OSD MENU
▶ Menu Tree
Main Menu Sub Menu Function Description
BRIGHTNESS Control of brightness
CONTRAST Control of contrast
H POSITION Control of horizontal position
V POSITION Control of vertical position
PHASE Control of phase
CLOCK Control of horizontal clock
PICTURE
AUTO ADJUST Automatic adjust position
BLUISH Color Temperature 9300k
(some blue color)
REDISH Color Temperature 6500k
(some red color)
USER RED : 0 ~ 100
GREEN : 0 ~ 100
BLUE : 0 ~ 100
COLOR
AUTO BALANCE Automatic adjust color
OSD H POSI Moves the OSD Menu
OSD V POSI Moves the OSD Menu
OSD TIMER OSD display time
OSD
TRANSPARENCY OSD Transparency
LANGUAGE Select OSD language
RECALL Factory default values
MISC
INPUT SELECT DVI, ANALOG Mode Change
HL720S/D Service Manual
-12-
FACTORY SET
OSD Menu => Misc => Recall => Yes. Every value changes factory setting value.
After factory set executes, power OFF power ON automatically.
You must push the auto button because of optimum image quality automatically.
When user want factory setting value, you must execute this function.
BURN-IN MODE
If you push the down button more than 5 seconds in disconnected signal cable status, you can
see changed color.
Burn-In mode displays chaged color continually. (white, red, blue, green etc.)
We can check normal operating status of the monitor under mass production.
If you want to finish Burn-In mode, you can turn off the power by only push the power button.
Loading...
+ 25 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use