Dell Precision 620 User Manual page 90

1. Check the monitor cable connections as indicated in
2. If the problem is not resolved, insert the Dell Precision ResourceCD into the CD-ROM drive, and reboot the system. Run the Video test
group in the Dell Diagnostics.
If any of the tests fail, see
Troubleshooting the System Board
NOTE: Before disconnecting a peripheral from the system or removing a component from the system board, verify that the standby
power LED on the system board has turned off. For the location of this LED, see
A system board problem can result from a defective system board component, a faulty power supply, or a defective component connected to the
system board. If an error message indicates a system board problem, perform the following steps:
1. Insert the Dell Precision ResourceCD into the CD-ROM drive, and reboot the system. Run the System Board Devices test group in the
Dell Diagnostics.
If any of the tests fail, see
2. Turn off the system, including any attached peripherals, and disconnect all the AC power cables from their electrical outlets. Also, disconnect
any telephone or telecommunication cables from the computer.
CAUTION: Before you remove the computer cover, see
3. Remove the computer cover.
4. Remove the AGP card brace according to the instructions in
5. Verify that the power cables from the power supply are firmly connected to the connectors on the system board.
6. Replace the AGP card brace.
7. Replace the computer cover, reconnect the system to an electrical outlet, and turn it on. If the problem is not resolved, proceed to step 8.
8. Perform the procedure in
If the problem is not resolved, proceed to step 9.
9. Perform the procedure in
If the problem is still not resolved, see
Troubleshooting a Dead System Board With the RTCRST Jumper
NOTE: Dell Precision WorkStation 620 systems are equipped with
problems. Make note of any LED codes you observe before contacting Dell for technical assistance.
If the system cannot boot and you have exhausted all other troubleshooting options, perform the following steps:
1. Turn off the system, including any attached peripherals, and disconnect all the AC power cables from their electrical outlets. Also, disconnect
any telephone or telecommunication cables from the computer.
CAUTION: Before you remove the computer cover, see
2. Remove the computer cover.
3. Remove the AGP card brace according to the instructions in
4. Install a jumper plug on the
5. Replace the computer cover, reconnect the system to an electrical outlet, and turn it on.
If the problem is not resolved, see
Troubleshooting Drives
"Checking Connections and
"Getting Help" for instructions on obtaining technical assistance.
"Getting Help" for instructions on obtaining technical assistance.
"Troubleshooting Expansion Cards."
"Troubleshooting the Keyboard."
"Getting Help" for instructions on obtaining technical assistance.
RTCRST jumper pins and then remove it.
"Getting Help" for instructions on obtaining technical assistance.
Switches."
Figure 1
"Safety First—For You and Your
"Removing and Replacing the AGP Card
diagnostic LEDs to help provide information about possible
"Safety First—For You and Your
"Removing and Replacing the AGP Card
in "Installing System Board Options."
Computer."
Brace."
Computer."
Brace."