4-10
Sun Blade 1500 Service, Diagnostics, and Troubleshooting Manual
• December
2004
4.2.4
USB Problem
FIGURE
4-7
USB Problem
This flowchart can only
be used for Sun sup-
ported devices.
There is a problem with
a USB device (not key-
board or mouse), inter-
acting with the system.
Is the
suspect device a Sun
supported device?
Disconnect all USB
devices and attach the
suspect device directly to
the system.
Is the problem
still there?
Problem is with cabling,
hubs, or other USB
device.
Y
N
Y
N
The combination card
provides best perfor-
mance for USB 2.0
devices. Plug the USB 2.0
device into the combina-
tion card.
Is the problem
still there?
Is the
suspect device a USB
1.0 or USB 1.1 device?
Y
N
Y
N
In normal operation, the USB ports allow for hot-plugging
of peripherals. If the peripheral is not recognized, try plug-
ging it in to another connector. Do not force the connec-
tion.
If the peripheral is USB 2.0-compliant, and it is not
attached to the USB 2.0 ports on the combination card, or
to a USB 2.0 hub attached to the USB 2.0 ports, then it will
have poor performance.
The keyboard and mouse do not function in the USB 2.0
ports on the combination card.
Checking a component means checking the electrical con-
nections and fit.
Is the suspect
device connected to the
combination card?
Reconnect the suspect
device to another combi-
nation card port.
Is the problem
still there?
Y
N
Y
N
Summary of Contents for Sun Blade 1500
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Page 360: ...13 62 Sun Blade 1500 Service Diagnostics and Troubleshooting Manual December 2004...
Page 412: ...A 4 Sun Blade 1500 Service Diagnostics and Troubleshooting Manual December 2004...
Page 432: ...B 20 Sun Blade 1500 Service Diagnostics and Troubleshooting Manual December 2004...
Page 472: ...C 40 Sun Blade 1500 Service Diagnostics and Troubleshooting Manual December 2004...
Page 500: ...Index 14 Sun Blade 1500 Service Diagnostics and Troubleshooting Manual December 2004...