Lenovo TD100X manual Symptom

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

vSee Chapter 3, “Parts listing, TD100 Types 6398, 6399, 6419, 6429, 4203, and 4206,” on page 25 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).

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

Symptom	Action
The screen is blank.	1.	Make sure that:
		v The server is turned on. If there is no power to the server, see “Power
		problems” on page 182.
		v The monitor cables are connected correctly.
		v The monitor is turned on and the brightness and contrast controls are
		adjusted correctly.
		v No beep codes sound when the server is turned on.
		Important: In some memory configurations, the 3-3-3 beep code might sound
		during POST, followed by a blank monitor screen. If this occurs and the Boot
		Fail Count option in the Start Options of the Configuration/Setup Utility
		program is enabled, you must restart the server three times to reset the
		configuration settings to the default configuration (the memory connector or
		bank of connectors enabled).
	2. Make sure that the correct server is controlling the monitor, if applicable.
	3. Make sure that damaged BIOS code is not affecting the video; see “Recovering
		from a BIOS update failure” on page 203.
	4. See “Solving undetermined problems” on page 215.
The monitor works when you	1.	Make sure that:
turn on the server, but the
		v The application program is not setting a display mode that is higher than the
screen goes blank when you
		capability of the monitor.
start some application
		v You installed the necessary device drivers for the application.
programs.
	2. Run video diagnostics (see “Running the diagnostic programs” on page 189).
		v If the server passes the video diagnostics, the video is good; see “Solving
		undetermined problems” on page 215.
		v (Trained service technician only) If the server fails the video diagnostics,
		replace the system board.

Chapter 5. Diagnostics 179