IBM 390E manual Important Service Information, Before Replacing Parts, You

Introduction

Important Service Information

Important

Diskette fixes are customer installable. The diskette fixes are located on the PC Company Bulletin Board Service (BBS). The direct phone line for modem con- nection is 919-557-0001 or tieline 255-0001.

Advise customers to contact the PC Company

HelpCenter at 800-772-2227 if they need assistance in obtaining or installing any diskette fixes.

Customers in Canada should call IBM HelpPC at

800-565-3344 for assistance or down-load information. The Canadian BBS phone numbers are:

Montreal514-938-3022

Toronto905-316-4255

Vancouver604-664-6464

Winnipeg204-934-2735

FRU Replacement Strategy

Before Replacing Parts

Ensure that all diskette fixes are installed prior to replacing any FRUs listed in this manual.

Use the following strategy to prevent unnecessary FRU replacement and service expense:

Ÿ	If	you	are instructed	to replace a FRU	and	that
	does	not	correct the	problem, reinstall	the	original
	FRU	before	you continue	.

ŸSome computers have both a processor board and a

system board. If you are instructed to replace either the processor board or the system board, and the first board that you replaced does not correct the problem, reinstall the original board, then replace the other

(processor or system) board.

ŸIf an adapter or device consists of more than one

FRU, an error code may		be caused by any of the
FRUs. Before replacing the adapter or device,
remove the FRUs, one by		one,	to see if the symp-
toms	change. Replace only	the	FRU that changed
the	symptoms.

Introduction1