Ihse K473-SSH, User Manual

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Troubleshooting
2011-02-23
37
8 Troubleshooting
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8.1 Blank Screen
Diagnosis Possible Reason Measure
LED Power off Power supply

Check power supply units and
the connection to the mains.
LED Link
Status off
Connection between
CON Unit and CPU Unit

Check interconnect cable and
connections.
CPU Unit: LED
Video OK off
No video signal detected
by source (computer,
CPU)

Check DVI-D cable to CPU.

Download DDC information from
console monitor (see Chapter
6.2, Page 27).
Reboot CPU if necessary.
No monitor detected

Check connection, length and
quality of the DVI-D cable to
monitor, tighten cable
thumbscrews.
No video signal detected
from CPU Unit

Check connection, length and
quality of interconnect cable
between the units.

Download DDC information from
console monitors (see Chapter
6.2, Page 27).
Reboot CPU if necessary.
CON Unit: LED
Video OK off
Suboptimal transmission
parameters

Execute Auto-Adjust (see
Chapter 6.1, Page 27).

If necessary, manually adjust
parameters for monitor
resolution (see Chapter 5.1.1,
Page 22) and cable length (see
Chapter 5.1.2, Page 23).
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