IBM 6331, User Manual, Page: 7 / 9

E-7
TROUBLESHOOTING
If your monitor fails to operate functionally, it might
be possible to correct the problem by making simple
checks as follows:
Refer to the operation instructions for your computer
or video adapter to ensure that you have the correct
signal output source for the monitor. Ensure that the
switches on the video adapter are set correctly for
operation with this monitor.
If the above steps fail to correct the problem contact
your dealer for servicing by qualified service
personnel.
You must include the power cord if you return the
monitor for service.
* NOTE: You can easily distinguish the problem is
on the monitor or on the computer by
using the monitor’s built-in selftest
function.
With the monitor power ON, disconnect
the signal cable from monitor. If there is
no image on the monitor screen,
disconnect the signal cable. If you see a
“NO SIGNAL” image on the screen
(shown below), the monitor is function
properly, and the problem is at computer
side, or signal cable.
Problem Check and Adjust
Blank screen
(* NOTE)
·
·
·
Monitor power switch,
power cord, signal cable,
or connector
computer power switch
Brightness and Contrast
controls
Display position
off-center
· Vertical centering and
horizontal phase controls
Display too small
or too large
· Vertical and horizontal
size controls
Display too bright
or too dim
· Brightness and Contrast
controls
SERVICING
Refer all servicing to qualified service personnel.
Serious shock hazards exist within the covers of
this monitor.
Do not open the covers under any circumstances-
there are no serviceable parts inside.
1
5
15
* NOTE :
This pin is used for self-test detection; at
computer side, this pin has to be connected
to ground.
P in F unc t io n P in F unc t io n
1 Red signal 9 5V
2 Green signal 10 Digital ground
3 Blue signal 11 Ground
4 Ground 12 SDA (DDC 1/DDC 2B)
5 * (N OTE) 13
Horizontal
Synchronization
6 Red return 14
Vertical synchronization
and VC LK (DDC 1)
7
Green
return
15 SC L (DDC 2B)
8 Blue return
SIGNAL CONNECTOR
INFORMATION
N O S IGN AL
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