IBM 1400 (2611) manual Handling Electrostatic Discharge-Sensitive Devices

ŸElectrical hazards, especially primary power (pr voltage on the frame can cause serious or fata trical shock).

ŸExplosive hazards, such as a damaged CRT face bulging capacitor.

ŸMechanical hazards, such as loose or missing har ware.

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

Checklist:

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

2.Power-off the computer. Disconnect the power co

3.Check the power cord for:

a. A third-wire ground connector in good conditi Use a meter to measure third-wire ground c nuity for 0.1 ohm or less between the exte ground pin and frame ground.

b. The	power cord	should be	the appropriate
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 g

judgment as to the safety of any non-IBM altera

6. Check inside the unit for any obvious unsafe co tions, such as metal filings, contamination, water other liquids, or signs of fire or smoke damage

7.	Check	for	worn,	frayed,	or pinched	cables.
8.	Check	that	the power-supply cover fasteners (sc
	or rivets)		have	not been	removed or	tampered wi

Handling Electrostatic

Discharge-Sensitive Devices

Any computer part containing transistors or integrated cuits ( ICs) should be considered sensitive to ele discharge (ESD). ESD damage can occur when there is difference in charge between objects. Protect aga damage by equalizing the charge so that the machi part, the work mat, and the person handling the par at the same charge.

14 ThinkPad i Series 1400 HMM