IBM C50 User manual

User Guide
Guide de l’utiliseur
Benutzerhandbuch
Manual del usuario
Manuale per l’utente
Color Monitor
Monitor Couleur
Farbmonitor
Monitor en Color
Monitor a Colori
C50

i
Edition 1
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functionally equivalent product, program, or service that does
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Trademarks
The following terms, used in this publication, are trademarks or
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IBM HelpCenter
© Copyright International Business Machines Corporation
1997.
All rights reserved.

ENGLISH
Contents
Content ……………………….. 1
Setup ………………….………. 2
User controls ………………… 5
Further information ………… 9
Specifications ……………….. 11
Troubleshooting …………….. 12
Compliances …………………. A1
Warranty ………………………. A2
1

Setup
Important: Before connecting the monitor, turn off the computer
and attached devices. Also ensure the power at the electrical
outlet matches the power requirements of the monitor. Refer to
the Specifications section on page 11 for more details.
Attaching the Stand
The tilt swivel stand is fitted as follows:
1. Place the monitor face down on a soft surface to prevent the
screen being scratched.
2. Insert the hooks (1) into the matching slots on the underside
of the monitor (2).
3. Slide the base towards the front of the monitor until the
latch (3) clicks into the locked position.
2
(3)
(1)
(2)

ENGLISH
Connecting your monitor
1. Connect the signal cable to your computer (figure A). Your
computer may have a video adapter card installed. In this
case, attach the signal cable to the connector on the video
adapter card (figure B).
2. Connect the power cord to the monitor first, then firmly
insert the plug into a properly grounded electrical outlet.
3. Turn on the monitor, and then the computer.
If your monitor does not seem to be working correctly, refer to
the Troubleshooting section on page 12 for help.
3

Workplace preparation
This section gives advice on the things that you should
consider before you set up your monitor.
Positioning the Monitor
Choose a suitable place to position the monitor where it is not
near fluorescent desk lighting or any equipment that produces
magnetic fields that could cause interference. Ensure that the
furniture or equipment can support the weight of the monitor.
Allow at least 2 inches (50mm) ventilation space around the
monitor.
Height
The monitor should be positioned so that the top of the screen
is slightly below your eye level when you sit at your
workstation.
Orientation
Choose a position that gives the least reflection from lights and
windows, usually at a right angle to any windows. The monitor
should be positioned directly in front of you so that you do not
have to twist your body. Tilt the monitor to a comfortable
viewing angle.
Working Practices
Rest
Take regular breaks. Vary your posture, and stand up and
stretch occasionally as prolonged use of computer
workstations can be tiring.
Back
You should sit back in the chair and use the back rest.
Hands
Use a light touch on the keyboard, keeping your hands and
fingers relaxed. Allow a space in front of the keyboard to rest
your wrists when not typing. Consider using a wristpad.
Eyesight
Working with monitors, in common with any prolonged close
work, can be visually demanding. Look away from the screen
periodically and have your eyesight checked regularly.
Screen settings
Set the screen brightness and contrast to a comfortable level.
You may have to adjust this as the lighting changes during the
day. Many application programs let you select colour combina-
tions which can help you to view in comfort.
4

ENGLISH
User controls
Description
Control
Icon
5
The image is already optimised for many display modes. However, the controls can be used to adjust the image to your liking.
Switches the monitor on and off.
Powerswitch
Minus button
-Decrease the value of the control.
Plus button
+Increase the value of the control.
Shift button Selects and deselects secondary controls.

Brightness and Contrast
These functions are adjusted directly using the rotary controls. Press the control and it will pop out so that it can be rotated. Press
again to return the control flush to the bezel.
Description
Function Effect of Control
-+
Adjusts background brightness
Brightness
Contrast Adjusts contrast between foreground and background
6

ENGLISH
7
Primary Controls
Description
Function Effect of Control
-+
Horizontal Size Adjusts image width
Moves image left or right
Horizontal
Position
Moves image up or down
Vertical
Position
Vertical Size Adjusts image height
If the LED indicator is lit, press shift button ( ) to turn it off.
Press the control button once to select the primary function, then press the " - " and " + " buttons to adjust.

Function Description
Memory Recall Recalls the preset image settings if operating in any
one of the factory set display modes (see Table 1 on
page 9)
Adjusts the amount of curvature on the vertical edges
Side Pincushion
Trapezoid Equalizes the length of the top and bottom edges
-+
Effect of Control
Control buttons , and have dual functions, , and . To make adjustments to the secondary controls press
shift button . The LED indicator will light up to show secondary controls are active. To revert back to primary controls (
) press shift button again and the LED indicator will go off.
To adjust secondary controls :
1. Press shift button to select secondary controls.
2. Press control button you wish to adjust.
3. Press - and + buttons to adjust the image.
Secondary controls
8

ENGLISH
Further information
The display mode the monitor uses is controlled by the
computer. Therefore you should refer to your computer
documentation for details on how to change display modes.
The image size, position and shape may change when the
display mode changes. This is normal and the image can be
readjusted using the monitor controls.
To ensure flicker-free operation, select the highest (non-
interlaced) refresh rate both the computer and the monitor
can support, (generally 72 Hz or higher), for the
addressability that your application requires.
For the display modes listed below, the screen image has
been optimised during manufacture.
Display modes
9
Addressability
720 x 400 70 Hz 31.5 kHz
640 x 480 60 Hz 31.5 kHz
640 x 480 72 Hz 37.9 kHz
640 x 480 75 Hz 37.5 kHz
640 x 480 85 Hz 43.3 kHz
800 x 600 75 Hz 46.9 kHz
800 x 600 85 Hz 53.7 kHz
1024 x 768 60 Hz 48.4 kHz
Horizontal
Frequency
Refresh
Rate
Table 1. Factory Set Display Modes.

Power Management
Press a key or move the mouse.*
State Screen Restoring Operation Compliance Power indicator
Steady Green Normal
On
Blank Press a key or move the mouse.
Press a key or move the mouse.* Energy Star
NUTEK
Blank
Blank
VESA Off
VESA Suspend
VESA Standby
* There may be a slight delay before the picture returns
SteadyYellow
SteadyYellow
Steady Amber
To benefit from power management, the monitor must be used
in conjunction with a computer that implements the Video
Electronics Standards Association (VESA) Display Power
Management Signalling (DPMS) Standard.
The power management feature is invoked when the computer
recognizes that you have not used your mouse or keyboard for
a user-definable period of time. There are several states as
described in the table below.
As an Energy Star Partner, IBM has determined that this
product meets Energy Star guidelines for energy efficiency.
10

ENGLISH
Specifications
The C50 (M/T 2235) color monitor uses a 15 inch CRT with a viewable image size of 13.7 inches (348 mm)
Dimensions Width:
Depth:
Height:
14.6 inch (370 mm)
16.5 inch (419 mm)
15.1 inch (383 mm)
Weight 29.7 lb (13.5 Kg)
Tilt Swivel Forward tilt:
Backward tilt:
Swivel:
5°
13°
+/- 90°
Image Maximum Height:
Maximum Width:
Dot Pitch:
8.3 inch (210 mm)
11.0 inch (280 mm)
0.28 mm
Power input SupplyVoltage:
Max Supply Current:
100 -240 Vac
50/60 Hz
1.5A at 100 Vac
Video input Input Signal:
Horiz. Addressability:
Vert. Addressability:
Clock Rate:
Analogue Direct
Drive, 75 ohm 0-0.7v
1024 pels (max.)
768 lines (max.)
65 Mpels/sec
Communications
Synchronization
Range
Power
Consumption
(Typical)
Environment
VESA DDC
Horiz. Frequency:
Vert. Frequency:
Normal Operation:
VESA Standby:
VESA Suspend:
VESA Off:
OperatingTemperature:
StorageTemperature:
ShippingTemperature:
Operating Humidity:
Storage Humidity:
Shipping Humidity:
Emissions:
1 /2 B
30 kHz - 54 kHz
50 Hz - 120 Hz
< 90 W
< 15 W
< 15 W
< 8 W
10 to 35°C
1 to 60°C
-20 to 60°C
20 to 80%
20 to 80%
20 to 90%
MPR-II
11

Troubleshooting
If you have a problem setting up or using your monitor, you may be able to solve it yourself. Before calling your retailer or IBM you
should try the suggested actions that are appropriate to your problem.
Screen is blank and
power indicator is off. No power to monitor. Setup section
starting on page 2
Problem Possible Cause Suggested Action Reference
Screen is blank and
power indicator is
steady green.
Brightness and Contrast
may be too low.
Display mode of the
computer is outside
the range of the
monitor.
No video signal from the
computer.
User controls section
starting on page 5
Further information
section starting on
page 9
12
Adjust brightness and contrast.
Reconfigure the computer to use a
supported display mode.
Check the signal cable is firmly connected
to the computer.
Check no pins are bent in the signal cable
connector.
Ensure the electrical outlet and the
monitor are both switched on.
Check power cord is firmly plugged into
the monitor and the electrical outlet.
If the power cord plug has a removable
fuse, replace it.
Try another power cord.
Try another electrical outlet.

ENGLISH
Screen is blank and
power indicator is
steady yellow or
steady amber.
The monitor is in Power
Management Standby /
Suspend or Off state.
No video signal from the
computer.
Problem Possible Cause Reference
Suggested Action
Image appears to be
flickering.
Image appears to be
discolored.
The monitor is operating in
an interlaced or low refresh
rate display mode.
The monitor may be affected
by interference from nearby
equipment.
The monitor may be affected
by interference from nearby
equipment.
Magnetization of monitor
components has built up.
Further information
section starting on page
9
13
Press any key on the keyboard or move
the mouse to restore operation.
Check the computer is powered on.
Check the signal cable is firmly connected
to the computer.
Check no pins are bent in the signal cable
connector.
Reconfigure the computer to use a non-
interlaced display mode with a refresh
rate of at least 72 Hz.
Move fluorescent desk lighting or any
equipment that produces magnetic fields
further away from the monitor.
If another monitor is close by, a separa-
tion distance of at least 12 inches
(300mm) is recommended.
Move any equipment that produces
magnetic fields (e.g. sub woofer loud
speakers) further away from the monitor.
Degauss the monitor by switching it off
and on again after 20 minutes.

Before calling, please have available as much of the following
information as possible:
1. Model and serial number from the label on
the back of your monitor.
2. Purchase receipt.
3. Description of problem.
4. Computer type and model.
5. System configuration (hardware fitted etc.).
6. System BIOS version number.
7. Operating System and version number.
8. Display driver version number.
If possible, stay by your computer system. Your technical
support representative might want to go through the problem
with you during the call.
Further help
If you are unable to correct the problem yourself, you may seek
further help as follows:
Call IBM HELPCENTER.
In the US call 1-800-772-2227
In Canada call 1-800-565-3344
In other countries, contact your dealer, retailer, or other IBM
authorized servicer.
14

Federal Communications Commission (FCC)
Statement
This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful
interference to radio communications. However, there is no
guarantee that interference will not occur in a particular
installation.
If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
•Reorientate or relocate the receiving antenna.
•Increase the separation between the equipment and
receiver.
•Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
•Consult an IBM authorized dealer or service
representative for help.
Properly shielded and grounded cables and connectors must
be used in order to meet FCC emission limits. Proper cables
and connectors are available from IBM authorized dealers.
IBM is not responsible for any radio or television interference
caused by using other than recommended cables and
connectors or by unauthorized changes or modifications to
this equipment. Unauthorized changes or modifications could
void the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1) this
device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.
Power Cords
For your safety, IBM provides a power cord with a grounded
attachment plug to use with this IBM product. To avoid
electrical shock, always use the power cord and plug with a
properly grounded power outlet.
IBM power cords used in the United States and Canada are
listed by the Underwriters Laboratories (UL) and certified by
the Canadian Standards Association (CSA).
For units intended to be operated at 115 volts: Use a UL listed
and CSA certified cord set consisting of a minimum 18 AWG,
type SVT or SJT, three conductor cord, a maximum of 4.5
Compliances

metres (15 feet) in length and a parallel blade, grounding type
attachment plug rated 15 amperes, 125 volts.
For units intended to be operated at 230 volts (U.S. use): Use
a UL listed and CSA certified cord set consisting of a
minimum 18 AWG, type SVT or SJT, three conductor cord, a
maximum of 4.5 metres (15 feet) in length and a tandem
blade, grounding type attachment plug rated 15 amperes 250
volts.
For units intended to be operated at 230 volts (outside the
U.S.): Use a cord set with a grounding type attachment plug
rated 13 amperes (minimum), 250 volts. The cord set should
be marked <HAR> and have the appropriate safety approvals
for the country in which the equipment will be installed.
As an ENERGY STAR Partner, IBM Corporation has
determined that this product meets the ENERGY STAR
guidelines for energy efficiency.
MPRII
This product complies with Swedish National Council for
Metrology (MPR) standards issued in December 1990
(MPRII) for very low frequency (VLF) and extremely low
frequency (ELF).
Hinweise
Gemäß der Amtsblätter des BMPT Nm. 61/1991 und 6/1992
wird der Betreiber darauf aufmerksam gemächt, daß die von
ihm mit diesem Gerät zusammengestellte Anlage auch den
technischen Bestimmungen dieser Amtsblätter genügen muß.
Aus ergonomischen Gründen wird empfohlen, die Grundfarbe
Blau nicht auf dunklem Untergrund zu verwenden (schlechte
Erkennbarkeit, Augenbelastung bei zu geringem
Zeichenkontrast).
Aus ergonomischen Gründen sollten nur Darstellungen auf
dunklem Hintergrund bei Vertikalfrequenzen ab 60 Hz (ohne
Zeilensprung) benutzt werden.
Die Konvergenz des Bildes kann sich auf Grund des
Magnetfeldes am Ort der Aufstellung aus der korrekten
Grundeinstellung verändern. Zur Korrektur empfiehlt es sich
deshalb, die Regler an der Frontseite für H STAT und V STAT
so einzustellen, daß die getrennt sichtbaren Farblinien für Rot.
Grün und Blau bei z.B. der Darstellung eines Buchstabens

zur Deckung (Konvergenz) gelangen. Siehe hierzu auch die
Erklärungen zu H STAT und V STAT.
European Union (EU) Statement
This product has been tested and found to comply with the
limits for Class B Information Technology Equipment
according to CISPR 22 / European Standard EN 55022.
The limits for Class B equipment were derived for typical
residential environments to provide reasonable protection
against interference with licensed communication devices.
Properly shielded and grounded cables and connectors must
be used in order to reduce the potential for causing
interference to radio and TV communications and to other
electrical or electronic equipment. Such cables and
connectors are available from IBM authorised dealers.
In accordance with EN 50082-1 1992, Performance Criterion
A:, it should be noted that in the presence of certain
electromagnetic fields, some screen jitter may be observed.
Spécifications de la CEE
Ce produit a été testé et déclaré conforme aux limites de la
Classe B définies pour les équipements informatiques
conformément à la norme européenne CISPR 22/EN 55022.
Les limites imposées aux équipements de Classe B visent à
garantir une protection raisonnable, dans des environnements
résidentiels, contre toute interférence avec des équipements
de communication agréés.
Des câbles blindés et correctement reliés à la terre doivent
être utilisés pour réduire les risques d’interférence avec des
communications radio et télévisées, ainsi qu’avec des
équipements électriques ou électroniques. Ces câbles et
connecteurs sont disponibles auprès de vos revendeurs
IBM agréés.
Conformément à la norme EN 50082-1 1992, Performance
Criterion A, veuillez noter qu’en présence de certains champs
électromagnétiques l’image de l’écran peut être instable.
Erklärung für die Europäische Union (EU)
Dieses Produkt wurde getestet, und dabei wurde festgestellt,
daß es gemäß CISPR 22 / Europäische Norm EN 55022 die
Grenzwerte für Ausrüstung der Informationstechnik, Klasse B,
einhält. Die Grenzwerte für Ausrüstung der Klasse B wurden
für eine typische Wohnumgebung erarbeitet, um einen
angemessenen Schutz vor Störungen im Zusammenhang mit
zugelassenen Kommunikationsgeräten zu gewährleisten.
Es sind ordnungsgemäß abgeschirmte und geerdete Kabel
und Stecker zu verwenden, um das Störungspotential in
bezug auf Radio- und Fernsehempfang oder andere

elektrische oder elektronische Geräte zu reduzieren. Solche
Kabel und Stecker sind bei autorisierten IBM-Fachhändlern
erhältlich.
In Übereinstimmung mit EN 50082-1 1992, Leistungskriterium
A wird darauf hingewiesen, daß bestimmte
elektromagnetische Felder ein Flattern auf dem Bildschirm
hervorrufen können.
Declaración de la Unión Europea (UE)
Este producto ha sido probado y cumple con las limitaciones
estipuladas para la Clase B ITE (Information Technology
Equipment), de conformidad con CISPR 22 / Estándar
Europeo EN 55022. Las limitaciones de los equipos de Clase
B se establecieron para que los entornos residenciales típicos
a fin de proporcionar una protección razonable contra
interferencias con dispositivos de comunicación autorizados.
Se deben utilizar conectores y cables debidamente
protegidos y conectados a tierra a fin de reducir las
posibilidades de que se produzcan interferencias con
comunicaciones por radio o televisión y otros equipos
eléctricos o electrónicos. Este tipo de cables y conectores
pueden adquirirse en concesionarios autorizados de IBM.
De acuerdo con la norma EN 50082-1 1992, Performance
Criterion A, habría que destacar que en
presencia de determinados campos
electromagnéticos, podría observarse una marcada
inestabilidad e la imagen.
Dichiarazione di conformità dell’Unione
Europea (UE)
Questo prodotto è stato collaudato e trovato conforme ai limiti
di Classe B relativi agli apparecchi informatici secondo quanto
dispone la normativa europea CISPR 22 / EN 55022. I
limiti degli apparecchi di Classe B sono stati definiti per i
normali ambienti domestici al fine di fornire un’adeguata
protezione con dispositivi di comunicazione autorizzati.
Utilizzare cavi e connettori collegati a terra per ridurre il
rischio potenziale di interferenza delle comunicazioni
radiotelevisive e di altri apparecchi elettrici o elettronici. I cavi
sono disponibili presso i rivenditori autorizzati IBM.
In accordo con quanto previsto nel documento EN 50082-1
1992, Performance Criterion A, è importante sottolineare che
in presenza di determinati campi elettromagnetici è possibile
che si verifichi un certo tremolio delle immagini.
Europeiska unionen (EU)
Denna produkt har testats och följer gränsvärdena för Klass B
Information Technology Equipment enligt CISPR 22 /