IBM 689912U, IntelliStation 300, IntelliStation 700 Hardware Maintenance Manual

This Manual Supports:

300 Series, Type

700 Series, Type

IntelliStation, Type

6272
6275

68XX

6888
6889
6893
6898
6899

6282
6284
6285
6561
6588
6591
65XX
6862
6892

S83G-7789-16

IBM Personal Computer

300 Series
700 Series
IntelliStation

Hardware
Maintenance
Manual

June 1998

We Want Your Comments!
(Please see page 449)

S83G-7789-16

IBM Personal Computer

300 Series
700 Series
IntelliStation

Hardware
Maintenance
Manual

June 1998

We Want Your Comments!
(Please see page 449)

IBM

Note

Before using this information and the product it
supports, be sure to read the general information
under “Notices” on page 458.

Seventeenth Edition (June 1998)
The following paragraph does not apply to the United

Kingdom or any country where such provisions are
inconsistent with local law: INTERNATIONAL

BUSINESS MACHINES CORPORATION PROVIDES THIS
PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT
NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. Some states do not allow disclaimer of
express or implied warranties in certain transactions,
therefore, this statement may not apply to you.

This publication could include technical inaccuracies or
typographical errors. Changes are periodically made to
the information herein; these changes will be incorporated
in new editions of the publication. IBM may make
improvements and/or changes in the product(s) and/or the
program(s) described in this publication at any time.

It is possible that this publication may contain reference to,
or information about, IBM products (machines and
programs), programming, or services that are not
announced in your country. Such references or
information must not be construed to mean that IBM
intends to announce such IBM products, programming, or
services in your country.

Requests for technical information about IBM products
should be made to your IBM reseller or IBM marketing
representative.

 Copyright International Business Machines
Corporation 1996, 1997, 1998. All rights reserved.

Note to U.S. Government users–Documentation related to
Restricted rights–Use, duplication, or disclosure is subject
to restrictions set forth in GSA ADP Schedule Contract
with IBM Corp.

ii IBM PC 300/700, IntelliStation Series HMM

About This Manual

This manual contains service and reference information for
IBM Personal Computer 300 Series, 700 Series, and the
Professional Workstation IntelliStation products.

The manual is divided into two sections as follows:

 The service section includes procedures for isolating

problems to a FRU, a Symptom-to-FRU Index, related
service procedures, and an illustrated parts catalog.

 The reference section includes safety information,

product descriptions, and general information about
system functions, and the advanced diagnostic tests.

This manual should be used along with the advanced
diagnostic tests to troubleshoot problems effectively.

Important

This manual is intended for trained servicers who are
familiar with IBM Personal Computer products. Use
this manual along with advanced diagnostic tests to
troubleshoot problems effectively.

Before servicing an IBM product, be sure to review the
“Safety Notices (Multi-lingual Translations)” on
page 156 and “Safety Information” on page 160.

iii

Related Publications

The following publications are available for IBM products.
For more information, contact IBM or an IBM Authorized
Dealer.

For Information About See Publication

PS/2 Computers IBM Personal System/2

Hardware Maintenance
Manual (S52G-9971)

PS/ValuePoint Computers IBM PS/ValuePoint

Hardware Maintenance
Service and Reference
(S61G-1423)

Laptop, Notebook, Portable,
and ThinkPad Computers
(L40, CL57, N45, N51,
P70/P75, ThinkPad 300,
350, 500, 510, 710T,
Expansion Unit, Dock I,
Dock II)

IBM Mobile Systems
Hardware Maintenance
Manual Volume 1
(S82G-1501)

ThinkPad Computers
(ThinkPad 340, 355, 360,
370, 700, 701, 720, 750,

755)

IBM Mobile Systems
Hardware Maintenance
Manual Volume 2
(S82G-1502)

ThinkPad Computers
(ThinkPad 365, 560, 760,
SelectaDock)

IBM Mobile Systems
Hardware Maintenance
Manual Volume 3
(S82G-1503)

Monitors (Displays)
(February 1993)

IBM PS/2 Display HMM
Volume 1 (SA38-0053)

Monitors
(December 1993)

IBM Color Monitor HMM
Volume 2 (S71G-4197)

IBM Monitors (P/G Series)
(June 1996)

IBM Monitor HMM
Volume 3 (S52H-3679)

IBM 2248 Monitor
(February 1996)

IBM Monitor HMM
Volume 4 (S52H-3739)

Disk Array technology
overview and using the IBM
RAID Configuration Program

Configuring Your Disk Array
booklet (S82G-1506)

Installation Planning for
Personal System/2
computers

Personal System/2
Installation Planning and
Beyond (G41G-2927)

Installation Planning for
Advanced Personal
System/2 Servers

Advanced PS/2 Servers
Planning and Selection
Guide (GG24-3927)

iv IBM PC 300/700, IntelliStation Series HMM

Contents

About This Manual ................ iii

Related Publications . . . . . . . . . . . . . . . iv

Service Information . . . . . . . . . . . . . . . 1

General Checkout (Type 62XX, 65XX, 68XX) .... 2

General Checkout (Type 6272 Models 88X, 89X, 90X,

91X) . . . . . . . . . . . . . . . . . . . . . . 5

General Checkout (Type 6275, 6285, 6561, 6591,

6862, 6889, 6892, 6893) ............. 14

General Checkout (Type 6876, 6886) ....... 17

Module Test Menu and Hardware Configuration Report 26

Keyboard . . . . . . . . . . . . . . . . . . . . . 27

Printer . . . . . . . . . . . . . . . . . . . . . . 27

Power Supply . . . . . . . . . . . . . . . . . . . 28

Display . . . . . . . . . . . . . . . . . . . . . . 31

Symptom-to-FRU Index . . . . . . . . . . . . . . 32

Undetermined Problem . . . . . . . . . . . . . . 81

Replacing a Processor .............. 81

Replacing a Video Cache Module ......... 82

Replacing a System Board ............ 83

Type 6272 Parts ................. 86

Type 6275 Parts ................. 89

Type 6282, 6284 Parts .............. 91

Type 6285 Parts ................. 94

Type 6X7X Parts ................. 96

Type 6X8X Parts ................. 97

Type 6560 Parts ................ 107

Type 6561 Parts ................ 110

Type 6562 Parts ................ 112

Type 6588, 6888 Parts ............. 114

Type 6591 Parts ................ 117

Type 6592 Parts ................ 119

Type 6598 Parts ................ 121

Type 6862 Parts ................ 123

Type 6888 Parts ................ 125

Type 6889 Parts ................ 126

Type 6892 Parts ................ 128

Type 6893 Parts ................ 131

Type 6898 Parts ................ 133

Type 6899 Parts ................ 136

Common Parts . . . . . . . . . . . . . . . . . 138

Special Tools . . . . . . . . . . . . . . . . . . 146

Reference Information . . . . . . . . . . . . . 147

Safety Notices (Multi-lingual Translations) .... 156

Safety Information . . . . . . . . . . . . . . . 160

Laser Compliance Statement .......... 165

Product Description . . . . . . . . . . . . . . . 167

Specifications Type 6272 ............ 169

Specifications Type 6275 ............ 170

Specifications Type 6282, 6284 ......... 171

 Copyright IBM Corp. 1996, 1997, 1998 v

Specifications Type 6285 ............ 172

Specifications Type 6X7X ............ 173

Specifications Type 6X8X ............ 174

Specifications Type 6560 ............ 175

Specifications Type 6561 ............ 176

Specifications Type 6562 ............ 177

Specifications Type 6588 ............ 178

Specifications Type 6589 ............ 179

Specifications Type 6591 ............ 180

Specifications Type 6592 ............ 181

Specifications Type 6598 ............ 182

Specifications Type 6862 ............ 183

Specifications Type 6888 ............ 184

Specifications Type 6889 ............ 185

Specifications Type 6892 ............ 186

Specifications Type 6893 ............ 187

Specifications Type 6898 ............ 188

Specifications Type 6899 ............ 189

Security Features . . . . . . . . . . . . . . . . 190

Hard Disk Drive Jumper Settings ......... 195

CD-ROM, PD/CD-ROM Drive Jumper Settings . . 199

BIOS Levels . . . . . . . . . . . . . . . . . . 200

Flash (BIOS/VPD) Update Procedure ...... 201

Diagnostics and Test Information ........ 203

Using the Test Programs ............ 215

Setup Utility Program .............. 220

Power Management . . . . . . . . . . . . . . . 226

Network Settings . . . . . . . . . . . . . . . . 229

Recovering from Software Problems (Type 68X7) . 231

Creating Utility Diskettes ............ 231

IBM Wireless LAN ............... 239

System Board Memory ............. 248

Computer Exploded View (Type 6272) ...... 261

Computer Exploded View (Type 6275) ...... 262

Computer Exploded View (Type 6282, 6284) . . . 265

Computer Exploded View (Type 6285) ...... 266

Computer Exploded View (Type 6X7X) ...... 271

Computer Exploded View (Type 6X8X) ...... 272

Computer Exploded View (Type 6560) ...... 273

Computer Exploded View (Type 6561) ...... 274

Computer Exploded View (Type 6562) ...... 279

Computer Exploded View (Type 6588, 6888) . . . 283

Computer Exploded View (Type 6591) ...... 288

Computer Exploded View (Type 6592) ...... 294

Computer Exploded View (Type 6598) ...... 297

Computer Exploded View (Type 6862) ...... 299

Computer Exploded View (Type 6889) ...... 302

Computer Exploded View (Type 6892) ...... 307

Computer Exploded View (Type 6893) ...... 312

Computer Exploded View (Type 6898) ...... 315

Computer Exploded View (Type 6899) ...... 319

Keylock Assembly Exploded View (Desktop Models) 321

System Board Layouts ............. 322

Riser Card Layouts ............... 388

vi IBM PC 300/700, IntelliStation Series HMM

Type/Model Number Conversion ......... 399

Country/Language Model Configuration ...... 406

Miscellaneous Information . . . . . . . . . . . . 447

Send Us Your Comments! ............ 449

Do You Need Technical References? ...... 450

Problem Determination Tips ........... 451

Notices . . . . . . . . . . . . . . . . . . . . . 458

Contents vii

viii IBM PC 300/700, IntelliStation Series HMM

Service Information

This section contains the general checkout procedures,
related service procedures, Symptom-to-FRU indexes, and
parts listings for IBM Personal Computer 300/700 Series
(Type 62XX, 65XX, and 68XX) and the IntelliStation (Type
6888, 6889, 6893, 6898, and 6899) computers.

Note

This manual and the diagnostic tests are intended to
test

only

IBM products. Non-IBM products of any kind
including adapter cards, accelerator boards, options,
or non-IBM devices, can give false errors and invalid
computer responses. If you remove a non-IBM device
and the symptom goes away, the problem is with the
device you removed.

 Copyright IBM Corp. 1996, 1997, 1998 1

General Checkout (Type 62XX, 65XX,
68XX)

This general checkout procedure is for Type 62XX, 65XX,
and 68XX computers.

If you are servicing a Type 6272 Model 88X, 89X, 90X,
91X, computer, see “General Checkout (Type 6272
Models 88X, 89X, 90X, 91X)” on page 5.

If you are servicing a Type 6275, 6285, 6561, 6591,
6862, 6889, 6892, or 6893 computer, see General
Checkout on page 14

If you are servicing a Type 6876 or Type 6886 Micro
Channel computer, see “General Checkout (Type 6876,

6886)” on page 17.
Attention

The drives in the computer you are servicing might
have been rearranged or the drive startup sequence
changed. Be extremely careful during write operations
such as copying, saving, or formatting. Data or
programs can be overwritten if you select an incorrect
drive.

Diagnostic error messages appear when a test program
finds a problem with a hardware option. For the test
programs to properly determine if a test

Passed, Failed

, or

Aborted

, the test programs check the error-return code at

test completion. See “Return Codes” on page 214.
General error messages appear if a problem or conflict is

found by an application program, the operating system, or
both. For an explanation of these messages, refer to the
information supplied with that software package.

Notes

1. Before replacing any FRUs, ensure the latest
level of BIOS is installed on the system. A
down-level BIOS might cause false errors and
unnecessary replacement of the system board.
For more information on how to determine and
obtain the latest level BIOS, see “BIOS Levels”
on page 200.

2. If multiple error codes are displayed, diagnose
the first error code displayed.

3. If the computer hangs with a POST error, go to
“Symptom-to-FRU Index” on page 32.

4. If the computer hangs and no error is displayed,
go to “Undetermined Problem” on page 81.

5. If an installed device is not recognized by the
diagnostics program, that device might be
defective.

2 IBM PC 300/700, IntelliStation Series HMM

001

– Power-off the computer and all external devices.
– Check all cables and power cords.
– Set all display controls to the middle position.
– Insert the Diagnostics diskette into drive A.
– Power-on all external devices.
– Power-on the computer.
– Check for the following response:

1. Readable instructions or the Main Menu.

DID YOU RECEIVE THE CORRECT RESPONSE?
Yes No

002

If Rapid Resume is displayed, do the following:

1. Disable Rapid Resume, see “Running Rapid
Resume Manager” on page 228.

2. Run the diagnostics tests.

3. Enable Rapid Resume after service is
complete.

– or –
If the computer hangs during Rapid Resume, do the
following:

1. Power-off; then, power-on the computer.

2. When the hard-disk drive activity light comes
on, press Ctrl+Alt+Del to exit Rapid Resume
and restart the computer. (Rapid Resume is
now turned off.)

– or –
Go to the “Symptom-to-FRU Index” on page 32.

003

ARE ALL INSTALLED DEVICES IN THE COMPUTER
HIGHLIGHTED ON THE MODULE TEST MENU OR
HARDWARE CONFIGURATION REPORT?
Yes No

004

Go to “Module Test Menu and Hardware
Configuration Report” on page 26.

005

Run the Advanced Diagnostics test. If necessary, refer to
“Diagnostics and Test Information” on page 203.

 If you receive an error, go to “Symptom-to-FRU

Index” on page 32.

 If the test stops and you cannot continue, replace the

last device tested.

(Step 005 continues)

Service Information

3

(CONTINUED)

005 (continued)

 If the computer has incorrect keyboard responses, go

to “Keyboard” on page 27.

 If the printer has incorrect responses, go to “Printer”

on page 27.

 If the display has problems such as jittering, rolling,

shifting, or being out of focus, go to “Display” on
page 31.

4 IBM PC 300/700, IntelliStation Series HMM

General Checkout (Type 6272 Models
88X, 89X, 90X, 91X)

This general checkout and diagnostic procedure is for the
Type 6272, Models 88X, 89X, 90X, 91X only. These
models come without a diskette drive (disketteless) and
without a CD-ROM.

Depending on the operating system and network
configuration, the method of running diagnostics varies.

It is the customer's responsibility to make the IBM PC
Enhanced Diagnostics accessible from either:

 The local hard disk

-- or --

 The server
If the computer you are servicing is set up to start

remotely, this general checkout procedure assumes that
the server providing services to the computer and the
network are functioning correctly.

Note

Run the IBM PC Enhanced Diagnostics under the
DOS operating system. Windows 95 and Windows
NT diagnostics should be run only if the DOS version
is not available.

For more information about the IBM PC Enhanced
Diagnostics, see “Diagnostics Test Programs” on
page 205.

001

– Power-off the computer and all external devices.
– Check all cables and power cords.
– Make sure the computer is connected to a functioning

network.
– Set all display controls to the middle position.
– Power-on all external devices.
– Power-on the computer.
– Check for the following response:

1. One beep

2. Operating system or diagnostics loaded

Note

If the operating system loader screen appears,
select an operating system.

DID YOU RECEIVE THE CORRECT RESPONSE?
Yes No

002

Check the following for the response you received
and perform the action:

(Step 002 continues)

Service Information

5

(CONTINUED)

002 (continued)

 No beep - See “Beep Symptoms” on page 33.
 One beep; Operating system did not load - Go

to Step 006.

 Two or more beeps - Go to the

“Symptom-to-FRU Index” on page 32.

003

OBSERVE THE GREEN LED ON THE TOKEN-RING
ADAPTER OR THE LNK LED ON THE ETHERNET
ADAPTER FOR 30 SECONDS. IS THE LED ON SOLID
FOR THE ENTIRE 30 SECONDS?
Yes No

004

The computer might not be connected to an active
network or there might be a problem with the
network adapter card. See “Network Adapter LED
Status” on page 11.

005

Start the PC Enhanced Diagnostics tests. If necessary,
refer to “Starting IBM PC Enhanced Diagnostics” on
page 9 and “Diagnostics and Test Information” on
page 203.

If diagnostic programs are not installed on the computer
you are servicing, contact the system administrator and
ask if the diagnostic programs can be made available over
the LAN. If the diagnostics can not be made available
over the LAN, use the “Symptom-to-FRU Index” on
page 32.

006

IS THERE A READABLE SCREEN WITH NO FLASHING,
JITTERING, OR OTHER DISPLAY PROBLEMS?
Yes No

007

Go to “Display” on page 31.

008

OBSERVE THE GREEN LED ON THE TOKEN-RING
ADAPTER OR THE LNK LED ON THE ETHERNET
ADAPTER FOR 30 SECONDS. IS THE LED ON SOLID
FOR THE ENTIRE 30 SECONDS?
Yes No

009

(Step 009 continues)

6 IBM PC 300/700, IntelliStation Series HMM

009 (continued)
The computer might not be connected to an active
network or there might be a problem with the
network adapter card. See “Network Adapter LED
Status” on page 11.

010

IS THE COMPUTER STOPPED AT THE RPL SCREEN?
Yes No

011

– The RPL (Remote Program Load) screen displays

a title line at the top of screen such as “IBM PCI
Token-Ring Adapter RPL.”

– Go to Step 026 on page 8.

012

CONTACT THE SYSTEM ADMINISTRATOR AND
PROVIDE THE MAC ADDRESS OF THE COMPUTER
YOU ARE SERVICING. ASK THE SYSTEM
ADMINISTRATOR: SHOULD THE COMPUTER BE
ENABLED FOR RPL?
Yes No

013

Change Startup sequence to remove network as
startup device. (See “Setup Utility Program” on
page 220). Go to Step 001 on page 5.

014

ASK THE SYSTEM ADMINISTRATOR: IS AN RPL
IMAGE ASSIGNED TO THE COMPUTER?
Yes No

015

– If a Token-Ring adapter is installed in the

computer, make note of the current startup
sequence, then change startup sequence to
temporarily remove network as a startup device
and make the hard disk the first startup device.
Restart the computer. Go to Step 017.

– If an Ethernet adapter is installed in the computer,

go to Step 020 on page 8.

016

Provide the new MAC address to the system administrator.

017

(Step 017 continues)

Service Information 7

(CONTINUED)

017 (continued)
DID THE OPERATING SYSTEM LOAD?
Yes No

018

– Restore the startup sequence.
– Go to Step 023.

019

Go to Step 005 on page 6 to run diagnostics, then restore
startup sequence after determining the problem.

020

PRESS THE HOME KEY. DID THE OPERATING
SYSTEM LOAD?
Yes No

021

Go to Step 023.

022

Go to Step 005 on page 6 to run diagnostics.

023

CONTACT THE SYSTEM ADMINISTRATOR AND ASK:
CAN DIAGNOSTICS BE ASSIGNED FROM THE
SERVER?
Yes No

024

– If you were provided with or have observed any

obvious symptoms, Go to “Symptom-to-FRU
Index” on page 32.

– Notify system administrator that you have no

symptoms diagnosed and diagnostics can not be
run on the computer you are servicing.

025

Restart the computer and run diagnostics. See “Starting
IBM PC Enhanced Diagnostics” on page 9.

026

AFTER CHECKING THE STARTUP SEQUENCE, IS
NETWORK THE FIRST DEVICE LISTED IN THE
STARTUP SEQUENCE?
Yes No

027

(Step 027 continues)

8 IBM PC 300/700, IntelliStation Series HMM

027 (continued)
– Go to Step 029.

028

– Replace the network adapter card.
– Contact the system administrator and provide the new

MAC address.

029

IS THE HARD DISK DRIVE THE FIRST DEVICE LISTED
IN THE STARTUP SEQUENCE?
Yes No

030

– If a device other than the hard disk is listed as the

first device, change the startup sequence so the
hard disk is the first device, then return to Step
001 on page 5. (See “Setup Utility Program” on
page 220).

031

SHOULD THE COMPUTER BE ENABLED FOR RPL?
Yes No

032

– Ask the system administrator to reinstall the

operating system, then return to Step 001 on
page 5. If the operating system cannot be
installed, replace the hard disk drive.

033

– Change the startup sequence so the network is the first

startup device and the hard disk drive is the second

startup device.
– Return to Step 001 on page 5.

Starting IBM PC Enhanced Diagnostics

These steps show how to start the DOS based IBM PC
Enhanced Diagnostics from Windows 95, Windows NT,
and Windows 3.X.

1. Shut down Windows 95 or Windows NT and re-start
in DOS mode. If Windows 3.X is running, close
Windows.

2. At the command prompt type: CD IBMDIAG, then
press the Enter key.

Note

If an invalid directory message appears, IBM PC
Enhanced Diagnostics are not installed. Restart
the computer and go to Step 001 on page 5.

Service Information 9

3. Type: PCDR, then press the Enter key.

4. Follow the instructions on the screen to run the
diagnostics.

Note

Do not start the diagnostics in the DOS session
of Windows 95 or from a command prompt under
Windows NT. The system must be shut down
and restarted in DOS.

Starting diagnostics under Windows 95 and
Window NT: Use the Windows diagnostics version

only if you cannot run the IBM PC Enhanced Diagnostics
under DOS.

1. Select Start

2. Select Programs

3. Select PC-Doctor

4. Select PC-Doctor for Windows

Diagnostics on the RTC CD

The IBM PC Enhanced Diagnostics are shipped on the
RTC (Ready To Configure) CD. For Type 6272
Disketteless models, the customer has the responsibility to
make the diagnostics available either locally on the PC
hard disk or remotely through a server.

Remote Diagnostics

Some computers might not have diagnostics loaded onto
the local hard drive. If the computer you are servicing is
connected to a server and the server has the diagnostic
image, remote diagnostics can be run. (To use the
diagnostics from the RTC CD, a diskette must be made
from the diskette factory, then the diskette files are loaded
on the server). See the customer's System Administrator
for more information about remote diagnostics.

Remote diagnostics require:

 Access to the network
 System Administrator to download the diagnostics or

to execute remote diagnostics to the client computer.

10 IBM PC 300/700, IntelliStation Series HMM

Network Adapter LED Status

Use the tables below to determine the status of the
Ethernet and Token-Ring adapter cards for diagnosing
network problems.

Ethernet Card LED Status:

LED
Name - Status

Explanation

LNK - On
LNK - Off

Successfully linked to the network.
No link established. Check for:

Good network condition.
Good cable between computer and
network receptacle.

Replace:
Ethernet adapter

Riser card
System board

ACT - On

ACT - Off

Activity present (Transmit and Receive
data to and from the network)
No activity.

100 TX - On
100 TX - Off

Network speed equals up to 100 Mbps.
Network speed equals up to 10 Mbps.

Service Information 11

Token-Ring Card LED Status:

Note

See “Token-Ring Table Terms and Definitions” on
page 13 for definition of terms in this table.

Amber Green Explanation

Blinking Blinking The adapter is waiting for

initialization (during POST).

Off Off The adapter initialization is in

progress (during POST), or the
computer is powered off.

Off Blinking The adapter did not detect any

problems during its self-diagnostic
tests and is waiting to open. If this
LED state occurs after the adapter
has been opened, this state
indicates that the adapter has
been closed under software
control.

Off On The adapter is open and operating

correctly.

On Off The adapter self-diagnostic tests

failed or there is a problem with
the adapter.
Replace:

Adapter
Riser card
System board

Blinking Off The adapter is closed due to an

undetected error. One of the
following exists:

 The adapter open failed.
 The adapter detected a wire

fault.

 The adapter failed the

auto-removal test.

Blinking On The adapter has detected

beaconing or hard error.
If network is known good, check
cable between computer and
network receptacle.
Replace:

Adapter
Riser card
System board

On On The adapter has failed before

running the self-diagnostic tests.
Replace:

Adapter
Riser card
System board

12 IBM PC 300/700, IntelliStation Series HMM

Token-Ring Table Terms and
Definitions

Auto-removal The state in which a token-ring adapter

port removes itself from the network to
perform self-tests to verify that it is not
the cause of a hard error. If the tests
are successful, the port will reattach
itself to the network.

Beaconing The state that a token-ring adapter port

enters after it has detected a hard error.
The error condition is reported to the
other devices on the network.
Beaconing can result in the port
removing itself from the network
(auto-removal) to determine whether it is
the cause of the hard error.

Hard error An error condition on a network that

requires removing the source of the error
or reconfiguring the network before the
network can resume reliable operation.

Initialization The first step taken to prepare the port

for use after the computer has been
booted. During initialization, the port
runs a series of internal self-diagnostic
tests.

Open The state in which the port has

established connection with other
devices on the ring.

Wire fault An error condition caused by a break or

short circuit in the cable segment that
connects the port to its access unit, such
as an IBM 8230 Token-Ring Network
Controller Access Unit.

Service Information

13

General Checkout (Type 6275, 6285,
6561, 6591, 6862, 6889, 6892, 6893)

This general checkout procedure is for Type 6275, 6285,
6561, 6591, 6862, 6889, 6892, 6893 computers.

Attention

The drives in the computer you are servicing might
have been rearranged or the drive startup sequence
changed. Be extremely careful during write operations
such as copying, saving, or formatting. Data or
programs can be overwritten if you select an incorrect
drive.

Diagnostic error messages appear when a test program
finds a problem with a hardware option. For the test
programs to properly determine if a test

Passed, Failed

, or

Aborted

, the test programs check the error-return code at

test completion. See “Return Codes” on page 214.
General error messages appear if a problem or conflict is

found by an application program, the operating system, or
both. For an explanation of these messages, refer to the
information supplied with that software package.

Notes

1. Before replacing any FRUs, ensure the latest
level of BIOS is installed on the system. A
down-level BIOS might cause false errors and
unnecessary replacement of the system board.
For more information on how to determine and
obtain the latest level BIOS, see “BIOS Levels”
on page 200.

2. If multiple error codes are displayed, diagnose
the first error code displayed.

3. If the computer hangs with a POST error, go to
“Symptom-to-FRU Index” on page 32.

4. If the computer hangs and no error is displayed,
go to “Undetermined Problem” on page 81.

5. If an installed device is not recognized by the
diagnostics program, that device might be
defective.

The power-on default is quick bring-up. To enable
Enhanced bring-up, select the Start Options in the
Configuration/Setup Utility program (see “Setup Utility
Program” on page 220) then, enable Power On Status.

001

– Power-off the computer and all external devices.
– Check all cables and power cords.
– Make sure the system board is seated properly.

(Step 001 continues)

14 IBM PC 300/700, IntelliStation Series HMM

001 (continued)

 For 6275, see page 263.
 For 6285, see page 269.
 For 6561 or 6591, see “System Board Removal

(Type 6561)” on page 276 or “System Board
Removal (Type 6591)” on page 291.

 For 6862, see page 301.
 For 6892, see page 310.

– Make sure the processor speed setting matches the

processor installed in the computer.

 For 6275, 6285, see page 326.
 For 6561, 6591, see page 330.
 For 6862, 6892, see page 363.
 For 6889, see page 376.
 For 6893, see page 379.

– Set all display controls to the middle position.
– Insert the IBM PC Enhanced Diagnostics diskette into

drive A.
– Power-on all external devices.
– Power-on the computer.
– Check for the following response:

1. Readable instructions or the Main Menu.

Note

Type 6275, 6285, 6561, 6591, 6862, 6889, 6892,
6893 computers are default to come up quiet (No
beep and no memory count and checkpoint code
display) when no errors are detected by POST.

To enable Beep and memory count and checkpoint
code display when a successful POST occurs:

1. Enable Power on Status in setup. See “Setup
Utility Program” on page 220.

DID YOU RECEIVE THE CORRECT RESPONSE?
Yes No

002

If the Power Management feature is enabled, do the
following:

1. Start the Configuration/Setup Utility program
(see “Setup Utility Program” on page 220)

2. Select Power Management from the
Configuration/Setup Utility program menu.

3. Select APM

4. Be sure APM BIOS Mode is set to Disabled.
If it is not, press Left Arrow (←) or Right Arrow
(→) to change the setting.

5. Select Automatic Hardware Power
Management.

6. Set Automatic Hardware Power Management
to Disabled.

Service Information

15

(CONTINUED)

– or –
Go to the “Symptom-to-FRU Index” on page 32.

003

Run the IBM PC Enhanced Diagnostics test. If necessary,
refer to “Diagnostics and Test Information” on page 203.

 If you receive an error, replace the part that the

diagnostic program calls out or go to
“Symptom-to-FRU Index” on page 32.

 If the test stops and you cannot continue, replace the

last device tested.

 If the computer has incorrect keyboard responses, go

to “Keyboard” on page 27.

 If the printer has incorrect responses, go to “Printer”

on page 27.

 If the display has problems such as jittering, rolling,

shifting, or being out of focus, go to “Display” on
page 31.

16 IBM PC 300/700, IntelliStation Series HMM

General Checkout (Type 6876, 6886)

This general checkout procedure is for Type 6876 and
6886 computers.

On Type 6876 and 6886 Micro Channel computers, you
can start the advanced diagnostics programs in one of
three ways:

1. From the 700 Series 6876/6886 Reference Diskette

2. From the 700 Series 6876/6886 Diagnostics Diskette

3. From the System Partition.

From the Reference Diskette (Type
6876/6886)

The Reference Diskette is bootable. Starting the
diagnostic programs from the Reference Diskette allows
you to test the options installed in the computer or test the
base system.

To Test Options (Type 6876/6886)

Notes

1. Ensure that Rapid Resume is disabled before
starting this procedure.

2. If Rapid Resume is displayed during this
procedure, see “Running Rapid Resume
Manager” on page 228.

3. Re-run the diagnostics tests.

To test the options installed in the computer, do the
following.

1. Power-off the computer and all external devices.

2. Check all cables and power cords.

3. Set all display controls to the middle position.

4. Insert the Reference Diskette into drive A.

5. Power-on all external devices.

6. Power-on the computer.

7. Check for the following responses:
a. One beep
b. IBM Logo

c. Readable instructions or the Main Menu

8. If you received the correct responses, press Ctrl+A
(Test the Computer screen appears). Select Options
diagnostics and follow the instructions on the screen.

9. If you did not receive the correct responses, go to
“Symptom-to-FRU Index” on page 32.

Service Information

17

To Test the Base System (Type 6876/6886)

Notes

1. Ensure that Rapid Resume is disabled before
starting this procedure.

2. If Rapid Resume is displayed during this
procedure, see “Running Rapid Resume
Manager” on page 228.

3. Re-run the diagnostics tests.

To test the base system, do the following:

1. Power-off the computer and all external devices.

2. Check all cables and power cords.

3. Set all display controls to the middle position.

4. Insert the Reference Diskette into drive A.

5. Power-on all external devices.

6. Power-on the computer.

7. Check for the following responses:
a. One beep
b. IBM Logo

c. Readable instructions or the Main Menu

8. If you received the correct responses, do the
following.
a. Press Ctrl+A

(Test the Computer screen appears).

b. Select System board diagnostics and follow

the instructions on the screen.

c. When the QAPlus/PRO Main Menu appears,

press Ctrl+A.

d. Select Diagnostics.

e. Select Module Test.

 If the Module Test Menu is correct, run

diagnostics.

 If the Module Test Menu is not correct, go

to “Module Test Menu and Hardware
Configuration Report” on page 26.

9. If you did not receive the correct responses, go to
“Symptom-to-FRU Index” on page 32.

From the Diagnostics Diskette (Type
6876/6886)

Important

If the diagnostic program is started from the
diagnostics diskette, you will not have the option to
test the Micro Channel options installed in the
computer.

The Diagnostics Diskette is bootable. The procedure
for starting the Diagnostics Diskette when servicing
Type 6876 and 6886 computers is the same as the
Type 62XX, 65XX, and 68XX computer. See “General
Checkout (Type 62XX, 65XX, 68XX)” on page 2.

18 IBM PC 300/700, IntelliStation Series HMM

From the System Partition (Type
6876/6886)

Starting the diagnostic programs from the System Partition
gives you the option of testing the options installed in the
computer or testing the base system.

To Test Options (Type 6876/6886)

Notes

1. Ensure that Rapid Resume is disabled before

starting this procedure.

2. If Rapid Resume is displayed during this

procedure, see “Running Rapid Resume
Manager” on page 228.

3. Re-run the diagnostics tests.

To test the options installed in the computer, do the
following.

1. Power-off the computer and all external devices.

2. Check all cables and power cords.

3. Set all display controls to the middle position.

4. Remove all media from the drives.

5. Power-on all external devices.

6. Power-on the computer.

7. Check for the following responses:
a. One Beep
b. IBM Logo

8. When the F1 prompt appears in the lower left-hand
corner of the screen, press F1 (the IBM logo appears,
then the System Programs Main Menu).

9. Press Ctrl+A
(Test the Computer screen appears).

10. If you received the correct responses, select Options
and follow the instructions on the screen.

11. If you did not receive the correct responses, reinstall
the System Partition on the hard disk drive from the
Reference Diskette.

To Test the Base System (Type 6876/6886)

Notes

1. Ensure that Rapid Resume is disabled before
starting this procedure.

2. If Rapid Resume is displayed during this
procedure, see “Running Rapid Resume
Manager” on page 228.

3. Re-run the diagnostics tests.

To test the base system, do the following.

1. Power-off the computer and all external devices.

2. Check all cables and power cords.

3. Set all display controls to the middle position.

Service Information 19

4. Remove all media from the drives.

5. Power-on all external devices.

6. Power-on the computer.

7. Check for the following responses:
a. One Beep
b. IBM Logo

8. When the F1 prompt appears in the lower left-hand
corner of the screen, press F1 (a second IBM logo
appears followed by the System Programs Main
Menu).

9. If you received the correct responses, do the
following:
a. Press Ctrl+A

(Test the Computer screen appears).

b. Select System board diagnostics and follow

the instructions on the screen.

c. When the QAPlus/PRO Main Menu appears,

press Ctrl+A

d. Select Diagnostics.

e. Select Module Test.

f. If the Module Test Menu is correct, run

diagnostics.

g. If the Module Test Menu is not correct, go to

“Module Test Menu and Hardware Configuration
Report” on page 26.

10. If you did not receive the correct responses, reinstall
the System Partition on the hard disk drive from the
Reference Diskette.

20 IBM PC 300/700, IntelliStation Series HMM