HP t620 Troubleshooting Manual page 59

Table B-5 Power-On Troubleshooting (continued)
No link or activity on the network RJ-45
LEDs or the LEDs do not illuminate blinking
green after powering on the thin client unit.
(The network LEDs are located inside the
RJ-45 connector on the top, rear panel of
the thin client. Indicator lights are visible
when the connector is installed.)
A newly connected unknown USB
peripheral does not respond or USB
peripherals connected prior to the newly
connected USB peripheral will not complete
their device actions.
Video does not display.
1. Verify that the network is not down.
2. Make sure the RJ-45 cable is good by installing the RJ-45 cable onto a
known working device—if a network signal is detected then the cable is
good.
3.
Verify the power supply is good by replacing the power cable to the unit
with a known working power supply cable and testing it.
4.
If network LED's still do not light and you know the power supply is good,
then re-image the unit.
5. If network LED's still do not light, run the IP configuration procedure.
6. If network LED's still do not light, have the unit serviced.
An unknown USB peripheral may be connected and disconnected to a running
platform as long as you do not reboot the system. If problems occur, disconnect
the unknown USB peripheral and reboot the platform.
1.
Verify that the monitor brightness is set to a readable level.
2. Verify the monitor is good by connecting it to a known working computer
and ensure its front LED turns green (assuming the monitor is Energy Star
compliant). If the monitor is defective, replace it with a working monitor and
repeat testing.
3. Re-image the thin client unit and power on the monitor again.
4.
Test the thin client unit on a known working monitor. If the monitor does not
display video, replace the thin client unit.
Troubleshooting
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