IBM 6150 Manual del propietario

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IBMRTPC

6150 System

Unit

Hardware

Maintenance

and

Service

Personal Computer

Hardware Reference

Library

Second Edition September 1986

This

is a major revision

and obsoletes the first edition

the

Model 20 and 25 Hardware Maintenance and Service manual.

Changes are made periodically to the information herein; these changes will be incorporated in new editions of this publication.

References

this publication to

products, programs,

services do not imply that

intends to make these available in all countries

in which

operates. Any reference to

licensed products in this publication

not intended to state or imply that only

mM's

licensed product may be used.

Any

functionally equivalent program may

used instead.

International Business Machines Corporation provides this manual "as is," without a warranty

any

kin~

either expressed or implied, including,

but not limited to, the implied warranties

merchantability and fitness for a particular purpose.

may

make improvements and/or changes

in the product(s)

and/or

the

program(s) described

this manual

any time.

Products are not stocked

the address given below. Requests for copies

this product and for technical information about the system

should

made to your authorized

Personal Computer dealer.

A reader's comment form is provided at the back

this publication.

the form has been removed, address comments to

Corporation, Department 998, 11400 Burnet Road, Austin, Texas 78758.

may use

distribute whatever information you supply in

any way it believes appropriate without incurring any obligation to you.

Federal Communications Commission (FCC) Radio Frequency

Interference Statement

Warning: This equipment has

been

tested

and

found to comply with

the limits for a Class A computing device pursuant

Subpart J of

Part

15 of

FCC

Rules, which are designed to provide reasonable

protection against such interference when operated in a commercial

environment. Operation

this equipment in a residential area

likely

cause interference, in which case the user at his own expense

will

required

take whatever measures may be required to correct

the interference.

This equipment generates, uses, and can radiate radio frequency energy.

not installed and used according to the instruction manual, the equipment

may cause interference to radio communications.

has been tested and

found to comply with the limits for a Class A computing device pursuant to

Subpart J of

Part

FCC

Rules, which are designed to provide

reasonable protection against such interference when operated in a

commercial environment. Operation of this equipment in a residential area

likely

cause interference, in which case the user at his own expense will

required to take whatever measures may be required to correct the

interference.

this equipment causes interference to radio communications, which can

determined

turning the equipment off and on, the user

encouraged to

try to correct the interference by one or more of the following measures:

• Reorient the receiving antenna.

• Relocate the equipment with respect to the receiver.

• Move the equipment away from the receiver.

• Plug the computer into a different outlet, so

that

the computer and

receiver are

different branch circuits.

• Ensure that card mounting screws, attachment connector screws, and

ground wires are tightly secured.

iii

Service Manual

• Ensure

that

card slot covers are in place when no card is installed.

•

peripherals

not

offered

IBM are used with this equipment, it

suggested

use shielded, grounded cables with in-line filters, if

necessary.

necessary, consult your dealer service representative for additional

suggestions.

The manufacturer is

not

responsible for any radio

television interference

caused

unauthorized modifications

this equipment.

the

responsibility

the user to correct such interference.

Safety

This manual contains

"DANGER"

notices

pages 4-22 and 4-23.

desired, translate the text and write your own words

the pages.

This manual contains a "Safety Inspection Guide"

the following pages.

The

Safety Inspection Guide is used by the IBM Service Representative.

The

IBM 6150 System Unit contains no hazardous voltages

safety

grounds outside the power supply. The power supply is a sealed unit

and

not

field serviceable.

Safety v

Safety Inspection Guide

vi Service Manual

Use this guide to identify unsafe conditions. Use good judgment to identify

potential safety hazards not

~overed

by this guide.

unsafe conditions are

present, determine how serious the hazards are and whether you should

continue before correcting the problem.

Do the following checks:

Check the covers for damage or alterations that expose the internal

parts of the system unit or for sharp edges.

2. Check the covers for proper fit to the system unit. They should be in

place and secure.

3. Gently rock the system unit from side to side to determine if it

steady.

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4. Set the power switch

the system unit to Off.

the "Side Cover Removal" on page 4-14.

6. Check for alterations or attachments. If there

are

any, check for

obvious safety hazards such as broken wires, sharp edges, or broken

insulation.

7. Check the internal cables for damage.

8. Check for dirt, water, and any other contamination within the system

unit.

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Safety

vii

viii Service Manual

9. Check the voltage label

the rear of the system unit to ensure it

matches the voltage at your outlet.

10. Check the external power cable for damage.

11. With the external power cable connected to the system unit, check for

0.1 ohm

less resistance between the ground lug

the external power

cable plug and the metal frame.

12.

the "Side Cover Replacement"

page 4-15.

About this

Book

This manual provides service information about the IBM 6150 System Unit,

adapters, and attached devices that do not have their own service

information. This manual does not contain service information about

attached printing and plotting devices.

Users

this manual should have training

the IBM 6150 System Unit.

This manual is divided into sections to make the information easier to find.

A three

four-digit code

used in the page numbering of some sections to

make future updating easier.

Section

"System Description" contains a brief description of the system

unit, keyboard, and display.

Section 2, "Diagnostics" contains descriptions of the diagnostic programs,

utilities, and the service request number.

Section 3, "Problem Isolation Charts" contains the service procedures used

isolate failures to a field-replaceable unit.

Section 4, "Removal and Replacement Procedures" contains the locations,

removal procedures, and replacement procedures. These procedures may

direct you to another section for specific details such as switch settings,

jumper settings, or terminator resistor settings.

Section 5, "Base System Unit" contains a description, specifications, cabling

diagrams, data flow diagram, and parts information for the base components

the system unit.

Section 6, "System Memory Options" contains a description, specifications,

and parts information for each system memory option.

About this Book

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