IBM 201 manual

Table 5. Engine troubleshooting symptoms and suggested actions (continued)

Device/Problem	Symptom	Suggested action
Intermittent problems	A problem occurs only	Verify that:
	occasionally and is	1.	All cables and cords are connected securely to the rear of the
	difficult to detect.		appliance and attached options.
		2.	When the appliance is turned on, air is flowing from the rear
			of the appliance at the fan grill. If there is no air flow, the fan
			is not working. This causes the appliance to overheat and shut
			down.
		3.	Ensure that the SCSI bus and devices are configured correctly
			and that the last external device in each SCSI chain is
			terminated correctly.
		If the items above are correct, call for service.
Keyboard, mouse, or	All or some keys on the	1.	Make sure that the keyboard cable is properly connected to
pointing-device	keyboard do not work.		the appliance.
problems (if		2.	Make sure that the appliance and the monitor are turned on.
attached).		3.	Try using another keyboard.
		If the items above are correct, call for service.
	The mouse or pointing	1.	Verify that the mouse or pointing-device cable is securely
	device does not work.		connected and the device drivers are installed correctly.
		2.	Try using another mouse or pointing device.
		If the problem remains, call for service.
Memory problems	The amount of memory	Verify that:
	displayed is less than	1.	The memory modules are seated properly.
	the amount of memory	2.	You have installed the correct type of memory.
	installed.	3.	If you changed the memory, you updated the memory
			configuration with the Configuration/Setup Utility program.
		4.	All banks of memory on the DIMMs are enabled. The
			appliance might have automatically disabled a DIMM bank
			when it detected a problem or a DIMM bank could have been
			manually disabled.
		If the above items are correct, run the memory diagnostic
		program. The system might have detected a bad memory module
		and automatically reallocated memory to enable you to continue
		to operate. If the memory tests fail, call for service or replace the
		failing DIMM.
Microprocessor	The appliance emits a	The startup (boot) microprocessor is not working properly.
problems	continuous tone during	Verify that the startup microprocessor is seated properly. If it is,
	POST.
		replace the startup microprocessor.
		If the problem remains, call for service.

Chapter 7. Troubleshooting 53