6-2 Dell PowerEdge 4200 Systems Installation and Troubleshooting Guide7. Run the Video Test Group in the system diagnos-tics again.Do the tests complete successfully?Yes. The monitor must be replaced. See Chapter 11,“Getting Help,” for instructions on obtaining tech-nical assistance.No. If a video expansion card is installed in the com-puter, see “Troubleshooting Expansion Cards” inChapter 7. If no video expansion card is installed, thebuilt-in video controller is faulty; see Chapter 11,“Getting Help,” for instructions on obtaining techni-cal assistance.Troubleshooting the KeyboardThis procedure determines what kind of keyboard prob-lem you have. If a system error message indicates akeyboard problem when you start up the computer sys-tem or while the system diagnostics is running, completethe following steps:1. Look at the keyboard and the keyboard cable forany signs of damage. Press and release each keyon the keyboard.Do the keyboard and its cable appear to be free ofphysical damage, and do the keys work?Yes. Go to step 3.No. Go to step 2.2. Swap the faulty keyboard with a workingkeyboard.To swap a faulty keyboard, unplug the keyboardcable from the computer’s back panel and plug in aworking keyboard.Is the problem resolved?Yes. The keyboard must be replaced. See Chapter 11,“Getting Help,” for instructions on obtaining tech-nical assistance.No. Go to step 3.3. Run the Keyboard Test Group in the systemdiagnostics.See Chapter 5, “Running the System Diagnostics.”Can you use the keyboard to select the KeyboardTest Group?Yes. Go to step 4.No. Go to step 5.4. Does the Keyboard Interactive Test completesuccessfully?Yes. Go to step 6.No. Go to step 5.5. Swap the faulty keyboard with a workingkeyboard.6. Does the Keyboard Controller Test completesuccessfully?Yes. The keyboard must be replaced. See Chapter 11,“Getting Help,” for instructions on obtaining tech-nical assistance.No. The keyboard controller on the system board isfaulty. See Chapter 11, “Getting Help,” for instruc-tions on obtaining technical assistance.Troubleshooting I/O PortsThis section provides a procedure for troubleshooting theports on the computer’s I/O panel and the equipment con-nected to them, such as a printer, scanner, or otherperipheral device.You can also use this procedure to test I/O ports onexpansion cards. However, you should first complete theprocedures in “Troubleshooting Expansion Cards” inChapter 7 to verify that the card is configured andinstalled correctly.If a system error message indicates a port problem orif equipment connected to a port seems to performincorrectly or not at all, the source of the problem may beany of the following:• A faulty connection between the I/O port and theperipheral device
