ViewSonic EA771B User Guide - Page 16

Diagnostic, Utility

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DDCTM Diagnostic Utility For IBM computers and compatibles The ViewSonic EA771/EA771B uses DDC (Display Data Channel) protocol to communicate with your computer's video card. The software diskette or CD-ROM included in the ViewSonic EA771/EA7718 package has a utility file called DDCTEST.EXE. This utility is useful for troubleshooting if DDC-related problems occur when using Windows® 3.1 or Windows® 95. When you run the DDC Diagnostic Utility, one of two messages appears: 1. If the utility detects that DDC is functioning, the following appears: ViewSonic/Optiquest Plug & Play monitor: EA771/EA77IB successfully detected. Hit any key to read and decode the EDID information...(ESC to exit) If you hit a key, you will see information about the monitor. This information is a table of EDID codes (Extended Display Identification Data) and an explanation of the codes. Press ESC to exit then: a. Check if DDC is enabled in Windows. Refer to the README.TXT file on the ViewSonic® diskette or CD-ROM for instructions on how to enable DDC in Windows. b. Install the ViewSonic MONITOR.INF file included on the ViewSonic diskette or CD-ROM. It is titled VSdatecode.inf, with the date code in year/month/day. Refer to the README.TXT file for installation instructions. If Plug & Play still does not work after you have followed the procedure above, call ViewSonic Customer Support. 2. If the utility detects that DDC is not functioning, the following appears: ViewSonic/Optiquest Plug & Play monitor was not detected Exit the utility. Turn the monitor off. Wait ten seconds and turn the monitor on. Try the DDC Diagnostic Utility again. If you still receive the message that the monitor was not detected: a. Check your computer or graphics board manufacturer's user's guide to see if your graphics system is DDC compatible. b. Check the video cable connector for bent or broken pins. c. Refer to the README.TXT file troubleshooting section (included on the ViewSonic diskette or CD-ROM). If the procedure above does not work, call ViewSonic Customer Support. 18 Operation ViewSonic EA771/EA7718

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DDC
TM
Diagnostic
Utility
For
IBM
computers
and
compatibles
The
ViewSonic
EA771/EA771B
uses
DDC
(Display
Data
Channel)
protocol
to
communicate
with
your
computer's
video
card.
The
software
diskette
or
CD-ROM
included
in
the
ViewSonic
EA771/EA7718
package
has
a
utility
fi
le
called
DDCTEST.EXE.
This
utility
is
useful
for
troubleshooting
if
DDC-related
problems
occur
when
using
Windows®
3.1
or
Windows®
95.
When
you
run
the
DDC
Diagnostic
Utility,
one
of
two
messages
appears:
1.
If
the
utility
detects
that
DDC
is
functioning,
the
following
appears:
ViewSonic/Optiquest
Plug
&
Play
monitor:
EA771/EA77IB
successfully
detected.
Hit
any
key
to
read
and
decode
the
EDID
information...(ESC
to
exit)
If
you
hit
a
key,
you
will
see
information
about
the
monitor.
This
information
is
a
table
of
EDID
codes
(Extended
Display
Identification
Data)
and
an
explanation
of
the
codes.
Press
ESC
to
exit
then:
a.
Check
if
DDC
is
enabled
in
Windows.
Refer
to
the
README.TXT
file
on
the
ViewSonic
®
diskette
or
CD-ROM
for
instructions
on
how
to
enable
DDC
in
Windows.
b.
Install
the
ViewSonic
MONITOR.INF
fi
le
included
on
the
ViewSonic
diskette
or
CD-ROM.
It
is
titled
VSdatecode.inf,
with
the
date
code
in
year/month/day.
Refer
to
the
README.TXT
file
for
installation
instructions.
If
Plug
&
Play
still
does
not
work
after
you
have
followed
the
procedure
above,
call
ViewSonic
Customer
Support.
2.
If
the
utility
detects
that
DDC
is
not
functioning,
the
following
appears:
ViewSonic/Optiquest
Plug
&
Play
monitor
was
not
detected
Exit
the
utility.
Turn
the
monitor
off.
Wait
ten
seconds
and
turn
the
monitor
on.
Try
the
DDC
Diagnostic
Utility
again.
If
you
still
receive
the
message
that
the
monitor
was
not
detected:
a.
Check
your
computer
or
graphics
board
manufacturer's
user's
guide
to
see
if
your
graphics
system
is
DDC
compatible.
b.
Check
the
video
cable
connector
for
bent
or
broken
pins.
c.
Refer
to
the
README.TXT
fi
le
troubleshooting
section
(included
on
the
ViewSonic
diskette
or
CD-ROM).
If
the
procedure
above
does
not
work,
call
ViewSonic
Customer
Support.
18
Operation
ViewSonic
EA771/EA7718