Lenovo RD230 manual Monitor problems

Monitor problems

Some monitors have their own self-tests. If you suspect a problem with your monitor, see the documentation that comes with the monitor for instructions for testing and adjusting the monitor.

vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.

vSee the parts listing in Chapter 6, “Parts listing, RD230 Types 1043, 1044, 4010, and 4011,” on page 91to determine which components are customer replaceable units (CRUs) and which components are field replaceable units (FRUs).

vIf an action step is preceded by “(Trained service technician only),” that step must be performed only by a trained service technician.

Symptom	Action
Testing the monitor	1.	Make sure that the monitor cables are firmly connected.
	2.	Try using a different monitor on the server, or try using the monitor that is
		being tested on a different server.
	3.	Run the diagnostic programs. If the monitor passes the diagnostic programs,
		the problem might be a video device driver.
	4.	(Trained service technician only) Replace the system board.
The screen is blank.	1.	If the server is attached to a KVM switch, bypass the KVM switch to eliminate
		it as a possible cause of the problem: connect the monitor cable directly to the
		correct connector on the rear of the server.

2.Make sure that:

vThe server is turned on. If there is no power to the server, see “Power problems” on page 21.

vThe monitor cables are connected correctly.

vThe monitor is turned on and the brightness and contrast controls are adjusted correctly.

vNo POST errors are generated when the server is turned on.

3.Make sure that the correct server is controlling the monitor, if applicable.

4.See “Solving undetermined problems” on page 25.

The monitor has screen jitter, or 1.	If the monitor self-tests show that the monitor is working correctly, consider
the screen image is wavy,	the location of the monitor. Magnetic fields around other devices (such as
unreadable, rolling, or
	transformers, appliances, fluorescent lights, and other monitors) can cause
distorted.
	screen jitter or wavy, unreadable, rolling, or distorted screen images. If this
	happens, turn off the monitor.
	Attention: Moving a color monitor while it is turned on might cause screen
	discoloration.
	Move the device and the monitor at least 305 mm (12 inches) apart, and turn
	on the monitor.
	To prevent diskette drive read/write errors, make sure that the distance
	between the monitor and any external diskette drive is at least 76 mm (3
	inches).
2.	Reseat the monitor.
3. Replace the following components one at a time, in the order shown, restarting
	the server each time:
	a. Monitor
	b. (Trained service technician only) System board

Chapter 3. Diagnostics 19