IBM 390E manual Checkout Guide, Verified

Checkout Guide

Use the following procedure as		a	guide for computer prob-
lems. Besides the checkout tests			described in this	section,
there are other items you can		test for using the PC Doctor
diagnostics	program. See “PC Doctor		System Diagnostics”
on page 51	for details.

Note: The diagnostic tests are intended to test only IBM

products. Non-IBM products, prototype cards, or modified options can give false errors and invalid system responses.

1.Obtain the failing symptoms in as much detail as pos- sible.

2.Verify the symptoms by attempting to recreate the

failure by running the diagnostic test or by repeating the same operation.

Note: To run the diagnostics, refer to “Running the Diagnostics” on page 50

3.Use the following table with the verified symptom to determine which page to go to. Search the symptoms column and find the description that best matches

your			symptom; then			go	to	the	page	shown in the "Go
to"		column.
Symptoms		(Verified)				Go	to
Power		failure.			(The	“Power		System	Checkout”
power-on indicator does						nont	page 33,		then	use table
go	on	or	stay		on.)	in	“Power-Related
						Symptoms” on			page 44.
POST	does		not	complete.		“Symptom-to-FRU Index” on
No	beeps		or	error		page 39, then use table in
codes/messages are indi-“No Beep Symptoms” on
cated.						page		43.

POST beeps, but no error“Symptom-to-FRU Index” on codes are displayed. page 39.

POST detected an error and“Symptom-to-FRU Index” on displayed numeric error page 39, then use table in

codes.“Numeric Error Codes” on page 40.

The	diagnostic test detected“Running the Diagnostics”
an	error and	displayed ona page 50.
FRU	code.
Other symptoms		(such	as “Symptom-to-FRU Index” on
LCD	display problems).		page 39.

Symptoms cannot be recre-Use the customer-reported ated (intermittent problems)symptoms,. and go to

“Symptom-to-FRU Index” on page 39.

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