LG StudioWorks 78DT5 User manual

Colour Monitor
USER GUIDE
BENUTZERHANDBUCH
MANUEL D'UTILISATION
GUIDA UTENTE
GUIA DEL USUARIO
MODEL : StudioWorks 78DT5

Table of Contents
Introduction........................................................................................1
Monitor Registration...........................................................................2
Important Precautions........................................................................3
Connecting the Monitor......................................................................5
Location and Function of Controls.....................................................9
Control Panel Function ....................................................................10
On Screen Display (OSD) Control Adjustment.................................11
OSD Adjustment and Selection Items..............................................12
Self Diagnostics...............................................................................17
Energy Saving Design .....................................................................17
Video Memory Modes......................................................................18
Display Data Channel (DDC)...........................................................20
Troubleshooting ...............................................................................21
Service.............................................................................................22
Specifications...................................................................................23
Environmental Labelling of Personal Computers................................25
TCO’95 Environmental Requirements..................................................27
Monitor Limited Warranty.................................................................28
English

Introduction
Thank you for purchasing an GoldStar high resolution monitor. It will
give you high resolution performance and convenient reliable opera-
tion in a variety of video operating modes.
Features
The StudioWorks 78DT5 is a 17-inch (16.0 inches viewable ) intelli-
gent, microprocessor based monitor compatible with most analog
RGB (Red, Green, Blue) display standards, including IBM PC®, PS/2®,
Apple®, Macintosh®, Centris®, Quadra®, and Macintosh II family. It can
also be used with a Sun SPARC workstation as well as other sources
using the 5 BNC connectors. The monitor provides crisp text and vivid
color graphics with VGA, SVGA, XGA, and VESA Ergo modes (non-
interlaced), and most Macintosh compatible color video cards when
used with the appropriate adapter.
The monitor's wide compatibility makes it possible to upgrade video
cards or software without purchasing a new monitor.
Digitally controlled auto-scanning is done with the microprocessor for
horizontal scan frequencies between 30 and 85KHz, and vertical scan
frequencies between 50 and 120Hz. The microprocessor-based intel-
ligence allows the monitor to operate in each frequency mode with the
precision of a fixed frequency monitor.
The microprocessor-based digital controls allow you to adjust
conveniently a variety of image controls by using the OSD (On
Screen Display).
The monitor is shipped with 8 factory pre-programmed video modes
that are permanently resident, and another 8 are set at the factory,
but may be overwritten to make more room. In addition, there are 24
user storable modes, for a total of 40 memory modes.
This monitor is capable of producing a maximum horizontal resolution
of 1600 dots and a maximum vertical resolution of 1280 lines. It is
well suited for CAD work and sophisticated windowing environments.
For greater user health and safety, this monitor complies with the
stringent Swedish TCO '95 requirements for low radiation emissions.
For low cost of monitor operation, this monitor is certified as meeting
the EPA Energy Star requirements, and utilizes the VESA Display
Power Management Signalling (DPMS) protocol for power saving
during non-use periods.
1
English

Monitor Registration
The model and serial numbers are found on the rear of this unit.
These numbers are unique to this unit and not available to others.
You should record requested information here and retain this guide
as a permanent record of your purchase. Staple your receipt to this
page.
Date of Purchase :
Dealer Purchased From :
Dealer Address :
Dealer Phone No. :
Model No. :
Serial No. :
Notice
All rights reserved. Reproduction in any manner, in whole or in part, is
strictly prohibited without the written permission of LG Electronics Inc.
Trademark Acknowledgments
GoldStar is a trademark of LG Electronics Inc.
IBM is a registered trademark and VGA is a trademark of
International Business Machines Corporation.
WARNING : To reduce the risk of fire or electric shock, do not
expose this appliance to rain or moisture.
AVERTISSEMENT : Ne pas placer cet appareil dans un endroit humide.
Cela peut entraîner un incendie ou une décharge électrique.
2

Important Precautions
This unit has been engineered and manufactured to assure your
personal safety, but improper use can result in potential electrical
shock or fire hazard. In order not to defeat the safeguards incorpo-
rated in this monitor, observe the following basic rules for its installa-
tion, use, and servicing. Also follow all warnings and instructions
marked directly on your monitor.
On safety
1. Use only the power cord supplied with the unit. In case you use
another power cord, make sure that it is certified by the applicable
standards (UL/CSA or VDE) if not being provided by the supplier.
2. Operate the monitor only from a power source indicated in the
specifications of this manual or listed on the monitor. If you are not
sure what type of power supply you have in your home, consult
your dealer.
3. Overloaded AC outlets and extension cords are dangerous. So are
frayed power cords and broken plugs. They may result in a shock
or fire hazard. Call your service technician for replacement.
4. DO NOT OPEN THE MONITOR. There are no user serviceable
components inside. There are Dangerous High Voltages inside,
even when the power is OFF. Contact your dealer if the monitor is
not operating properly.
5. To avoid personal injury :
Do not place the monitor on a sloping shelf unless properly secured.
Use only a stand recommended by the manufacturer.
Do not try to roll a stand with small casters across thresholds or
deep pile carpets.
6. To prevent Fire or Hazards:
Always turn the monitor OFF if you leave the room for more than
a short period of time. Never leave the monitor ON when leaving
the house.
3

Keep children from dropping or pushing objects into the monitor's
cabinet openings. Some internal parts carry hazardous voltages.
Do not add accessories that have not been designed for this
monitor.
During a lightning storm or when the monitor is to be left unattended
for an extended period of time, unplug it from the wall outlet.
Do not bring magnetic devices such as magnets or motors near
the picture tube.
On installation
1. Do not allow anything to rest upon or roll over the power cord, and
do not place the monitor where the power cord is subject to damage.
2. Do not use this monitor near water such as near a bathtub, wash-
bowl, kitchen sink, laundry tub, in a wet basement, or near a swim-
ming pool.
3. Monitors are provided with ventilation openings in the cabinet to
allow the release of heat generated during operation. If these
openings are blocked, built-up heat can cause failures which may
result in a fire hazard. Therefore, NEVER:
Block the bottom ventilation slots by placing the monitor on a
bed, sofa, rug, etc.
Place the monitor in a built-in enclosure unless proper ventilation
is provided.
Cover the openings with cloth or other material.
Place the monitor near or over a radiator or heat source.
On cleaning
Unplug the monitor before cleaning the face of the picture tube.
Use a slightly damp (not wet) cloth. Do not use an aerosol directly
on the picture tube because overspray may cause electrical shock.
On repacking.
Do not throw away the carton and packing materials. They make
an ideal container in which to transport the unit. When shipping
the unit to another location, repack it in its original material.
4

Connecting the Monitor
On the back of the monitor are three plug-in connections; one for the
AC power cord, and the others for the signal cable from the video card.
1. AC Power Connection
One end of the AC power cord is connected into the AC power connector
on the back of the monitor. The other end is plugged into a properly
grounded three-prong AC outlet. The monitor's auto-sensing power supply
can automatically detect 100-120V AC or 200-240V AC, 50 or 60Hz.
2. Signal Cable Connection
The connectors for the signal cable are located on the back of the
monitor. The BNC and 15 pin VGA connectors on the back of the
monitor allow for a wide variety of video controllers to be connected to
the monitor. Examples of signals that might be sent to the monitor
include signals from IBM PC and compatibles, Apple Macintosh,
Centris, Quadra, and SPARC workstations.
The supplied signal cable consists of 15 pin VGA connectors at both
ends, suitable for connections to an IBM PC or compatible.
Other generic cables or adapters may be used for connections to your
equipment, as long as they meet the compatible signal requirements
to activate this monitor (see page 23 for input specifications). For
Apple Macintosh use, a separate plug adapter is needed to change
the 15 pin high density (3 row) D-sub VGA connector on the supplied
cable to a 15 pin 2 row connector. Examples of typical connections
are shown below. Select the connection example that fits your needs.
5

A) Connection to any IBM VGA PC compatible system
Figure 3 shows the signal cable connections from the monitor to the
Video Graphics Array (VGA) port typical in an IBM PC or PC compati-
ble. This also applies to any graphics video card for PC-CAD or work-
station that has a 15 pin high density (3 row) D-Sub connector.
1. Power off both the monitor and PC.
2. Connect the 15 pin VGA connector of the supplied signal cable to
the output VGA video connector on the PC and the matching input
connector on the rear of the monitor. The connectors will mate only
one way. If you cannot attach the cable easily, turn the connector
upside down and try again. When mated, tighten the thumbscrews
to secure the connection.
3. Power ON the PC, then the monitor.
4. If you see the No Signal message, check the signal cable and
connectors.
5. After using the system, power OFF the monitor, then the PC.
Figure 3.
6
Power Cord Signal Cable
D-15P D-15P
R G B H+V V
(Rear of Monitor)
Signal Cable

B) Connecting to an Apple Macintosh II, Centris, and Quadra
Figure 4 shows the connection to an Apple Macintosh, using a sepa-
rately purchased adapter.
1. Power OFF both the monitor and the PC.
2. Connect the 15 pin VGA connector of the supplied signal cable to
the matching input on the back of the monitor. Tighten the thumb-
screws to secure the connection.
3. Locate the appropriate MAC to VGA adapter block at your local
computer store. This adapter changes the high density 3 row 15
pin VGA connector to the correct 15 pin 2 row connection to mate
with your MAC. Attach the other end of the signal cable to the side
of the adapter block with 3 rows.
4. Connect the attached adapter block/signal cable to the video out-
put on your MAC.
5. Power ON the PC, then the monitor.
6. If you see the No Signal message, check the signal cable and
connectors.
7. After using the system, power OFF the monitor, then the PC.
Figure 4.
7
Power Cord Signal Cable
D-15P
ADAPTER 15P
R G B H+V V
(Rear of Monitor)
Signal Cable

Notes on using the BNC connectors with other types of video cards. Follow
the example that fits your needs. (BNC cables not included with Monitor.)
IN CASE OF EXTERNAL COMPOSITE SYNC SIGNAL:
Connect R, G, and B video signals and Composite sync signal to
BNC receptacles on rear panel, respectively.
IN CASE OF SEPARATE HORIZONTAL AND VERTICAL SYNC
SIGNALS:
Connect R, G, and B video signals and horizontal and vertical
sync signals to BNC receptacles on rear panel respectively.
8
R G B H+V V
Red Green Blue Gray
R G B H+V V
Red Green Blue Gray Black

Location and Function of Controls
9
Front View
OSD Select/Adjustment Control
BNC Signal Connectors
AC Power Socket D-Sub Signal Connector
ID Label
Power (DPMS)
Indicator
Rear View
Power ON/OFF Switch
OSD ON/OFF
Enter button
Brightness Adjustment Control
Contrast Adjustment Control

Control Panel Function
All functions are adjusted from the microprocessor-based digital controls.
Buttons on the front of the monitor allow you to adjust the image
easily through an OSD menu. As you choose controls, the selected
icon shows you what the chosen control will do. These pictures give
you immediate understanding of the controls. The following is a
description of use for each button.
Power ON/OFF button
This button is used to turn the monitor on and off.
Power Indicator
This Indicator lights up green when the monitor operates normally.
If the monitor is in DPM (Energy Saving) mode (stand-by/suspend/
power off), this indicator color changes to amber.
Contrast control
Adjust the display to the contrast desired. Move the thumbwheel
located beneath this indicator to increase or decrease the display
contrast.
Brightness control
Used to adjust the brightness of the screen. Move the thumb-
wheel located beneath this indicator to increase or decrease
the display brightness.
Enter button
Use this button to start/enter and exit from the On Screen
Display (OSD). If there is no OSD on the screen, One click
(press) of this button will show the Main Menu. To remove the
display, either wait 10 seconds. If you are in a submenu, a single
click will back you out to the Main Menu display, and then will
exit the menu.
Adjustment Control
Use this knob for selecting (highlighting) an OSD icon to be
adjusted. It is also used for selecting the level of the selected
item to be adjusted.
10
Increase
Decrease
Increase
Decrease
OSD ON/OFF Enter Button
OSD Select /Adjust Control
Brightness
Contrast
Power Indicator
Power Button

On Screen Display (OSD) Control Adjustment
Making adjustments to the image size, position and operating param-
eters of the monitor are quick and easy with the On Screen Display
Control system, using only the Enter button and Adjustment Control
knob. A quick example is given below to familiarize you with the use
of the controls. Following this section is an outline of the available
adjustments and selections you can make using the OSD.
Note: (Monitor and PC should be ON, with an image or prompt on the
screen.) Rotating the Adjustment Control knob clockwise one click will
present you with the Main Menu1 of the On Screen Display system,
with the first item highlighted (red color). The main picture
area will also show the selected icon and a brief description (here H-
SIZE). If you turned the control more than one click, a different icon
may be highlighted (red color). Move the control until the icon is
selected. The OSD system should look like :
To adjust this item, press the Enter Button once.
The display will look like:
The bar graph shows you the current level of the selected H-SIZE control.
The OSD also tells you the resolution mode you are using and the refresh
rate. Use the Adjustment control knob to increase or decrease the level to
fit the screen or your desired size. When you are done, press the Enter
( ) button once to return to Main Menu1 to make another selection. If
you are have finished using the OSD after you have returned to Main
Menu1, you can use the Enter button to exit the OSD.
11
H-SIZE
enter : select:
H-SIZE
1280 X 1024 75Hz
main : adjust:
127

12
OSD Adjustment and Selection Items
In the previous section, you were introduced to the procedure of
selecting and adjusting an item using the OSD system. There are two
Main Menu pages: the first one has the 8 most commonly used items,
and the second page has items that are used less frequently. When
selecting an item to be adjusted, moving the adjustment control past
the last icon on the screen (either left or right) will take you to the
other Main Menu page.
Listed below are the icons, icon names, and icon descriptions of the
items that are shown on the Main Menu 1 OSD :
Horizontal Size (To adjust image width)
Horizontal Position (To move picture image left and right)
Vertical Size (To adjust image height)
Vertical Position (To move image up and down)
Side Pincushion (To correct the bowing in and bowing out of the image)
Trapezoid (To correct geometric distortion)
Tilt (To correct image rotation)
Side Pincushion Balance ( To correct the balace of both sides bowing )
Listed below are the icons, icon names, and icon descriptions of the
items that are shown on the Main Menu 2 OSD :
Color Select (To select Color Temperature or set color levels)
Zoom Adjust (To Adjust image width and height at same time)
mr Moire Control (To reduce the interference of the horizontal
display lines or the vertical display lines)
OSD Adjust (To adjust position and size of the OSD)
Option Select (To select options (beep on/off, degauss, BNC/D-Sub,
Video level (0.7V or 1.0V)))
Mode Recall (To recall the stored factory mode)
Mode Info (To review detail about current video mode)
CC Static Convergence Control (To correct the Misconvergence)
OSD

13
To adjust the controls for the first 8 items on Main Menu1, follow the
sample procedure shown on page 12. For items on Main Menu 2, the
examples below show how to adjust or select the possible options.
In general, to adjust items in Main Menu 2 :
1. Rotate adjustment control thumbwheel until the desires icon is
shown and is highlighted.
2. Click the Enter button to confirm that selection. A new submenu
will present you with options.
3. Rotate the adjustment control thumbwheel to select the desired
setting or level.
4. To exit, click the enter button once. This will take you back to the
Main Menu. You can select another icon to adjust by rotating the
adjustment control thumbwheel, or exit the Main Menu by
doubleclicking the enter button.
COLOR SELECT
This item allows you to select the display's color temperature or adjust
your own user color levels. Push the Enter button. The color selection
as shown below will be displayed. Select the desired color tempera-
ture or select user to set your own color levels. When you have
finished, use the exit ( ) icon to retun to main menu to take another
selection.
ZOOM ADJUST
This item allows you adjust both horizontal size and vertical size of the
image at the same time. After highlighting (red color) this icon push
the Enter Button, the zoom adjust as shown below will be displayed.
Rotate the adjustment control to adjust the display size. Press the
Enter button when done.
color select
enter: select:
OSD
mr cc
color select
select:
OSD
mr cc
enter:
9300'K 7200'K user
127 R
B
127
color select
color recall :
:
select: adjust:
OSD
mr cc
OSD
mr cc
zoom adjust
enter : select:
OSD
mr cc
zoom adjust
main : adjust:
68

14
mr MOIRE CONTROL
This item allows you to reduce the moire (Moire is caused by interference
the periodical display pattern with the periodical dot screen). It is normally
OFF. If you want to adjust it, select ON using the adjustment control and
push the Enter Button. Then adjust the moire as shown Fig 3.
OSD ADJUST
This item lets you adjust the OSD position and size. After selecting
the OSD icon using the Adjustment Control, push the Enter button.
The OSD will be displayed as shown below. Select an icon using the
Enter button. Rotate the Adjustment Control to modify existing posi-
tion or size. When you have finished, use the exit ( ) icon to retun
to main menu to take another selection.
OSD
mr cc
adjust
enter : select:
OSD
OSD
mr cc
adjust
enter : adjust:
OSD
OSD
Moire Reduction
enter: select:
OSD
mr cc
Moire Reduction
Moire : off on
OSD
select: adjust:
0%
mr cc
Moire Reduction
Moire : off on
OSD
adjust: main:
50%
mr cc
Fig 1. Fig 2. Fig 3.

15
OPTION SELECT
This item gives access 5 elements; manual degaussing, beep
ON/OFF, signal input selection, Video level (0.7V or 1.0V) and exit.
Press the Enter button to select the desired item to change. Rotate
the adjustment control either to perform the function highlighted (red
color) or to select the desired item. When you have finished, use the
exit ( ) icon to retun to main menu to take another selection.
For example, if the selected signal input is BNC in D-SUB, the picture
is muted and in DPM for a few seconds. Then, if the micom confirms
the input signal jack, the input signal searches for D-SUB again so
that the picture is automatically displayed.
MODE RECALL
This item recalls and restores your display to one of the factory preset
modes. After highlighting this icon, press the Enter button and the
image will revert to one of the factory presets. The information shown
on-screen will include video memory mode number and the horizontal
and vertical refresh rate for that mode. To exit this item, double click
the Enter button.
Recall OK
mode no : 2
31.5KHz / 60Hz
OSD
mr cc
enter : select:
option select
option select
select: adjust:
beep :
: Degauss
: BNC D-SUB
: 0.7V 1.0V
:

MODE INFORMATION
This item provides information about the stored video modes. After
highlighting (red color) the mode information icon, press Enter.
Rotate the Adjustment Control to see the desired video mode infor-
mation. The mode information screens give you some information
regarding industry resolution terminology, resolution, and memory
mode number.
CC STATIC CONVERGENCE CONTROL
This item allows you to adjust the MISCONVERGENCE. Selecting H,
you'll control the horizontal static convergence Selecting V, you'll
control the vertical static convergence. When you have finished, use
the exit ( ) icon to retun to main menu to take another selection.
16
OSD
mr cc
enter : select:
mode information
mode info.
V e s a S V G A 3
8 0 0 x 6 0 0
p r e s e t m o d e : 8
u s e r m o d e : 12
m o d e d a t a :
main :
H/V convergence
enter: select:
OSD
mr cc
H/V convergence
select:
:
adjust:
127 H
V
127
OSD
mr cc

Self Diagnostics
The Studioworks 78DT5 has a SELF DIAGNOSTICS OSD feature
that pops up when there may be possible causes of non-operation.
The OSD will highlight a possible reason the display is not showing
an image. An example of this may be when you turn on the monitor
with no signal cable attached. The monitor will display No Signal
OSD. This would be a clue for you to check the signal connections.
Energy Saving Design
This monitor complies with the EPA's Energy Star program, which is a
program designed to have manufacturers of computer equipment
build circuitry into their products to reduce power consumption during
time of non-use.
This monitor also goes into its energy saving mode if you exceed the
monitor's operating limits, such as the maximum resolution of
1600x1280 or the frequency refresh rates of 30-85 KHz horizontal or
50-120Hz vertical. When this monitor is used with a Green or EPA
Energy Star PC, or a PC with a screen blanking software following the
VESA Display Power Management Signalling (DPMS) protocol, this
monitor can conserve significant energy by reducing power consump-
tion during periods of non-use. When the PC goes into the energy
saving mode, the monitor will go into a suspended operation state,
indicated by the Power LED light changing from a green color to an
amber color. After an extended period in the suspended mode, the
monitor will then enter a semi-OFF mode to conserve more energy. In
the semi-OFF mode or DPMS OFF mode as we call it in our specifi-
cations, the Power LED will still show an amber color. When you
awaken your PC by hitting a key or moving the mouse, the monitor
will also awaken to its normal operating mode, indicated by the green
Power LED light. By following these conventions, the power con-
sumption can be reduced to the following levels:
17
Mode
Normal
Stand-by
Suspend
Off
H. Sync
On
Off
On
Off
V. Sync
On
On
Off
Off
Power
Consumption
120W
15W
15W
5W
LED Color
Green
Amber
Amber
Amber

Video Memory Modes
This multi-synchronous auto-scanning monitor can automatically
detect and display several video modes falling within the monitor's
scanning range of 30-85KHz Horizontal and 50-120Hz Vertical. In the
PC area, this relates to a maximum flicker-free usable resolution of
1280x1024 at a non-interlaced refresh rate of 75Hz Vertical.
For convenience, the monitor has a 40 mode memory, of which 8
modes come from the factory preset to popular video modes as
described below.
Modes 17-40 are empty and can accept new video data.
If the monitor detects one of the above signals from your computer's
video card, it will recall that mode and any stored image adjustments
you may have made before. If the monitor detects a new video mode
that had not been present before or is not one of the above listed fac-
tory presets, it will store a new mode automatically in one of the blank
(empty) memory modes (in this example, mode 17). When you now
adjust the OSD controls to your preference, these image settings will
also be stored in mode 17. Whenever your video card or PC switches to
the mode that the monitor recognizes as mode 17, your personal image
settings will also be recalled.
18
Resolution
720 x 400
640 x 480
640 x 480
800 x 600
1024 x 768
1280 x 1024
1152 x 870
1280 x 1024
Horizontal
Frequency
31.47KHz
31.47KHz
37.50KHz
46.88KHz
60.02KHz
63.98KHz
68.68KHz
79.98KHz
Vertical
Frequency
70.08Hz
59.94Hz
75.00Hz
75.00Hz
75.03Hz
60.02Hz
75.06Hz
75.03Hz
HS. pol
-
-
-
+
+
+
SOG
+
VS. pol
+
-
-
+
+
+
SOG
+
Mode
1
2
3
4
5
6
7
8