IBM 600/600E (2645) manual Safety, Guide, Handling Electrostatic Discharge-Sensitive

Introduction

Safety		Inspection		Guide:		The intent of this
inspection			guide		is to	assist	you in	identifying
unsafe		conditions			on these products. Each machine
was	designed			and	built,	had	required	safety i
to	protect		users		and service		personnel	from inju

guide addresses only those items. However, good judgment should be used to identify potential s

hazards		due	to	attachment of non-IBM features
not	covered		by	this inspection		guide.
If	any	unsafe		conditions	are	present,	you	must
how	serious		the	apparent	hazard could		be	and
you	can	continue		without first		correcting the pr

Consider these conditions and the safety hazard present:

ŸElectrical hazards, especially primary power voltage on the frame can cause serious or electrical shock).

ŸExplosive hazards, such as a damaged CRT fa bulging capacitor

ŸMechanical hazards, such as loose or missing hardware

The guide consists of a series of steps prese checklist. Begin the checks with the power off, power cord disconnected.

Checklist:

1.Check exterior covers for damage (loose, b sharp edges).

2.Power-off the computer. Disconnect the power

3.Check the power cord for:

a. A third-wire ground connector in good con Use a meter to measure third-wire groun continuity for 0.1 ohm or less between t external ground pin and frame ground.

b. The	power	cord		should be		the	appropria
as	specified		in	the	parts	listings.
c. Insulation		must	not be		frayed		or worn.

4.Remove the cover.

5.Check for any obvious non-IBM alterations. Use

	judgment as to				the	safety		of any	non-IBM al
6.	Check inside the unit for any obvious unsafe
	conditions,			such as metal filings, contamination,
	or	other		liquids, or signs of fire					or smoke
7.	Check		for	worn,	frayed,		or	pinched	cables.
8.	Check		that	the power-supply cover fasteners
	or	rivets)		have	not	been	removed or		tampered

Handling Electrostatic Discharge-Sensitive

Devices: Any computer part containing transistors integrated circuits (ICs) should be considered electrostatic discharge (ESD). ESD damage can occ when there is a difference in charge between

General Descriptions13