IBM THINKCENTER 8128 Owner's manual

ThinkCentre
™
Hardware Maintenance Manual
Ty pe s 8128, 8185, 8186, 8187, 8188, 8189,
Ty pe s 8190, 8192, 8193, 8194, 8195, 8196,
Ty pe s 8197, 8413, 8414, 8415, 8430, 8431
Ty pe s 8432, 8433


ThinkCentre
™
Hardware Maintenance Manual
Ty pe s 8128, 8185, 8186, 8187, 8188, 8189,
Ty pe s 8190, 8192, 8193, 8194, 8195, 8196,
Ty pe s 8197, 8413, 8414, 8415, 8430, 8431
Ty pe s 8432, 8433


Note: Before using this information and the product it supports, be sure to read the
general information under “Notices” on page 281.
Ninth Edition (February 2005)
INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION ″AS IS″WITHOUT
ANY WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
LIMITED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR APARTICULAR PURPOSE. Some
jurisdictions do not allow disclaimers or 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 or changes in the products or the programs described in this publication at any time.
Requests for technical information about IBM products should be made to your IBM Authorized Dealer or your
IBM Marketing Representative.
©Copyright International Business Machines Corporation 2005. All rights reserved.
US Government Users Restricted Rights –Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.

Contents
Chapter 1. About this manual .....1
Important Safety Information .........1
Chapter 2. General information .....3
Features ................3
Physical specifications ...........5
Types 8185, 8186, 8192, 8413, and 8430 .....6
Types 8128, 8187, 8188, 8193, 8414, and 8431 ...7
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433 8
Types 8196 and 8197 ...........9
Chapter 3. General Checkout .....11
Chapter 4. IBM Enhanced Diagnostics 15
Diagnostics program download........15
Navigating through the diagnostics programs ...15
Running diagnostics tests..........15
Test selection .............16
Test results .............16
Fixed disk advanced test (FDAT) ......16
Quick and Full erase -hard drive ......18
Viewing the test log ...........18
Chapter 5. IBM Setup Utility program 19
Starting the IBM Setup Utility program .....19
Viewing and changing settings ........19
Exiting from the IBM Setup Utility program ...20
Using passwords ............20
User password ............20
Administrator password .........20
Setting, changing, and deleting apassword...20
Using Security Profile by Device .......21
Using IDE Drives Setup ..........21
Selecting astartup device..........22
Selecting atemporary startup device .....22
Changing the startup device sequence ....22
Chapter 6. Replacing FRUs ......23
Locating connectors on the front .......23
Types 8185, 8186, 8192, 8413, and 8430 ....23
Types 8128, 8187, 8188, 8193, 8414, and 8431 ..23
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433 25
Types 8196 and 8197 ..........25
Locating the connectors on the rear ......27
Types 8185, 8186, 8192, 8413, and 8430 ....27
Types 8128, 8187, 8188, 8193, 8414, and 8431 ..27
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433 29
Types 8196 and 8197 ..........29
Removing the cover ...........30
Types 8185, 8186, 8192, 8413, and 8430 ....30
Types 8128, 8187, 8188, 8193, 8414, and 8431 ..31
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433 31
Types 8196 and 8197 ..........32
Locating components ...........34
Types 8185, 8186, 8192, 8413, and 8430 ....34
Types 8128, 8187, 8188, 8193, 8414, and 8431 ..35
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433 36
Types 8196 and 8197 ..........37
Identifying parts on the system board (all machine
types) ................38
Replacing memory (all machine types) .....38
Replacing adapters ............39
Types 8185, 8186, 8192, 8413, and 8430 ....39
Types 8128, 8187, 8188, 8193, 8414, and 8431 ..41
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433 42
Types 8196 and 8197 ..........42
Replacing internal drives ..........43
Types 8185, 8186, 8192, 8413, and 8430 ....43
Types 8128, 8187, 8188, 8193, 8414, and 8431 ..45
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433 48
Types 8196 and 8197 ..........51
Connecting the drive ...........54
Parallel ATA hard disk drive........54
Serial ATA hard disk drive ........55
CD drive, DVD drive, CD/RW drive, or
DVD/CD/RW combo drive ........55
Diskette drive ............55
Replacing the battery (all machine types) ....56
Replacing the power supply .........57
Types 8185, 8186, 8192, 8413, and 8430 ....57
Types 8128, 8187, 8188, 8193, 8414, and 8431 ..57
Types 8189, 8190, 8194, 8195, 8196, 8197, 8415,
8432, and 8433 ............58
Replacing amicroprocessor (all machine types) ..59
Replacing the system board (all machine types) ..61
Replacing the cover and connecting the cables...63
Types 8185, 8186, 8192, 8413, and 8430 ....63
Types 8128, 8187, 8188, 8193, 8414, and 8431 ..64
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433 65
Types 8196 and 8197 ..........66
Chapter 7. Symptom-to-FRU Index ...69
Hard disk drive boot error .........69
Power Supply Errors ...........70
Diagnostic error codes ...........70
Beep symptoms .............89
No-beep symptoms............91
POST error codes ............92
Miscellaneous error messages ........ 107
Undetermined problems.......... 109
Power supply connectors .........110
Connector P1 ............110
Connector P2, P3, P4, and P7 .......110
Connector P5 (Diskette drive) .......110
Connector P6 ............110
Connector P8 (Serial ATA) ........110
Chapter 8. Additional Service
Information ............ 111
©Copyright IBM Corp. 2005 iii

Security features ............ 111
Passwords ............. 111
Vital product data ...........112
BIOS levels ..............112
Erasing alost or forgotten password (clearing
CMOS) ...............113
Flash update procedures..........113
Updating (flashing) BIOS from adiskette or
CD-ROM ..............113
Updating (flashing) BIOS from your operating
system...............113
Recovering from aPOST/BIOS update failure 114
Power management ...........115
Automatic configuration and power interface
(ACPI) BIOS.............115
Advanced Power Management ......115
Automatic Hardware Power Management
features ..............115
Setting Automatic Hardware Power
Management features..........115
Automatic Power-On features .......116
Product Recovery Program .........117
Chapter 9. Parts listing .......119
Type 8128 ..............119
Type 8185 .............. 121
Type 8186 .............. 130
Type 8187 .............. 134
Type 8188 .............. 149
Type 8189 .............. 158
Type 8190 .............. 172
Type 8192 .............. 178
Type 8193 .............. 180
Type 8194 .............. 188
Type 8195 .............. 202
Type 8196 ..............211
Type 8197 .............. 215
Type 8413 .............. 218
Type 8414 .............. 223
Type 8415 .............. 229
Type 8430 .............. 232
Type 8431 .............. 236
Type 8432 .............. 241
Type 8433 .............. 244
Chapter 10. Related service
information ............ 247
Safety information............ 247
General safety ............ 247
Electrical safety............ 248
Safety inspection guide ......... 249
Handling electrostatic discharge-sensitive
devices .............. 250
Grounding requirements ........ 251
Safety notices (multi-lingual translations) ... 251
Send us your comments! ......... 280
Problem determination tips......... 281
Notices ............... 281
Trademarks .............. 282
iv Hardware Maintenance Manual

Chapter 1. About this manual
This manual contains service and reference information for IBM
® computer Types
8128, 8185, 8186, 8187, 8188, 8189, 8190, 8192 8193, 8194, 8195, 8196, 8197, 8413,
8414, 8415, 8430, 8431 8432, and 8433.
This manual is divided into product service sections and arelated service section,
as follows:
vThe product service sections include procedures for isolating problems to aFRU,
aSymptom-to-FRU Index, additional service information and an illustrated parts
catalog.
vThe related service section includes safety notices and safety information, and
problem determination tips.
Note:
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 information” on page 247.
Important Safety Information
Be sure to read all caution and danger statements in this book before performing
any of the instructions.
Prenez connaissance de toutes les consignes de type Attention et Danger avant de
procéder aux opérations décrites par les instructions.
Lesen Sie alle Sicherheitshinweise, bevor Sie eine Anweisung ausführen.
Accertarsi di leggere tutti gli avvisi di attenzione edi pericolo prima di effettuare
qualsiasi operazione.
©Copyright IBM Corp. 2005 1

Leia todas as instruções de cuidado eperigo antes de executar qualquer operação.
Lea atentamente todas las declaraciones de precaución ypeligro ante de llevar a
cabo cualquier operación.
2Hardware Maintenance Manual

Chapter 2. General information
This IBM
® computer incorporates many of the latest advances in computer
technology.
Go to Access IBM for general information about the use, operation, and
maintenance of the computer. Access IBM also contains information to help solve
problems and get repair service or other technical assistance.
Features
This section provides an overview of the computer features and preinstalled
software.
Microprocessor (varies by model type)
vIntel
® Celeron ™ (some models)
vIntel Pentium
® 4(some models)
vIntel Pentium 4with HyperThreading (some models)
vInternal cache (size varies by model type)
Memory
vSupport for four dual inline memory modules (DIMMs)
v512 KB flash memory for system programs
Internal drives
v3.5-inch, 1.44 MB diskette drive
vInternal hard disk drive
vEIDE CD-ROM drive or DVD-ROM drive (some models)
Video subsystem
vAn integrated graphics controller for aVideo Graphics Array (VGA) monitor
vAccelerated graphics port (AGP) video adapter slot on the system board
Audio subsystem
vAC’97 with ADI 1981B Audio Codec
vLine in, line out, and microphone connectors on the rear panel
Connectivity
v10/100/1000 Mbps integrated Intel Ethernet controller that supports the Wake
on LAN
® feature (some models)
vSoft modem V.90/V.44 (some models)
System management features
vRemote Program Load (RPL) and Dynamic Host Configuration Protocol (DHCP)
vWake on LAN
vWake on Ring (in the IBM Setup Utility program, this feature is called Serial Port
Ring Detect for an external modem)
vRemote Administration
vAutomatic power-on startup
©Copyright IBM Corp. 2005 3

vSystem Management (SM) BIOS and SM software
vAbility to store POST hardware test results
Input/output features
v25-pin, Extended Capabilities Port (ECP)/Extended Parallel Port (EPP)
v9-pin serial connector
vEight 4-pin, USB connectors (two on front panel and six on rear panel)
vPS/2
® mouse connector
vPS/2 keyboard connector
vEthernet connector
vVGA monitor connector
vThree audio connectors (line in, line out, and microphone)
Expansion
vEmpty drive bays (some models)
vThree 32-bit peripheral component interconnect (PCI) adapter slots (supports
low-profile adapters only)
vOne accelerated graphics port (AGP) expansion slot (supports low-profile
adapters only)
Power
v200 -230 Wpower supply with manual voltage selection switch (depending on
type)
vAutomatic 50/60 Hz input frequency switching
vAdvanced Power Management support
vAdvanced Configuration and Power Interface (ACPI) support
Security features
vUser and administrator passwords
vSupport for the addition of arope clip and lockable cable
vSupport for the addition of an integrated cable lock
vStartup sequence control
vStartup without diskette drive, keyboard, or mouse
vUnattended start mode
vDiskette and hard disk I/O control
vSerial and parallel port I/O control
vSecurity profile by device
IBM preinstalled software
The computer might come with preinstalled software. If it does, an operating
system, device drivers to support built-in features, and other support programs are
included.
Operating systems (preinstalled) (varies by model type)
Note: Not all countries or regions will have these operating systems.
vMicrosoft
® Windows ® XP Home
vMicrosoft Windows XP Professional
vMicrosoft Windows 2000
4Hardware Maintenance Manual

Operating systems (tested for compatibility)
1
vMicrosoft Windows NT
® Workstation Version 4.0
vMicrosoft Windows 98 Second Edition
Physical specifications
This section details the physical specifications for each computer Type.
1. The operating systems listed here are being tested for compatibility at the time this publication goes to press. Additional
operating systems might be identified by IBM as compatible with the computer following the publication of this booklet.
Corrections and additions to this list are subject to change. To determine if an operating system has been tested for compatibility,
check the Web site of the operating system vendor.
Chapter 2. General information 5

Types 8185, 8186, 8192, 8413, and 8430
This section lists the physical specifications for the computer.
Dimensions
Height: 104 mm (4.1 in.)
Width: 360 mm (14.2 in.)
Depth: 412 mm (16.2 in.)
Weight
Minimum configuration as shipped: 8.1 kg (18 lb)
Maximum configuration: 9.1 kg (20 lb)
Environment
Air temperature:
System on: 10° to 35°C (50° to 95° F)
System off: 10° to 43°C (50° to 110° F)
Maximum altitude: 2134 m(7000 ft)
Note: The maximum altitude, 2134 m(7000 ft), is the
maximum altitude at which the specified air temperatures
apply. At higher altitudes, the maximum air temperatures
are lower than those specified.
Humidity:
System on: 8% to 80%
System off: 8% to 80%
Electrical input
Input voltage:
Low range:
Minimum: 90 Vac
Maximum: 180 Vac
Input frequency range: 47–53 Hz
Voltage switch setting: 115 Vac
High range:
Minimum: 137 Vac
Maximum: 265 Vac
Input frequency range: 57–63 Hz
Voltage switch setting: 230 Vac
Input kilovolt-amperes (kVA) (approximate):
Minimum configuration as shipped: 0.08 kVA
Maximum configuration: 0.25 kVA
Note: Power consumption and heat output vary depending
on the number and type of optional features installed and
the power-management optional features in use.
Heat output (approximate) in British thermal units (Btu) per
hour:
Minimum configuration: 257 Btu/hr (75 watts)
Maximum configuration: 683 Btu/hr (200 watts)
Airflow
Approximately 0.45 cubic meters per minute (16 cubic feet
per minute) maximum
Acoustical noise-emission values
For microprocessors less than 2.8 GHz:
Average sound-pressure levels:
At operator position:
Idle: 28 dBA
Operating: 30 dBA
At bystander position -1meter (3.3 ft):
Idle: 27 dBA
Operating: 29 dBA
Declared (upper limit) sound-power levels:
Idle: 4.2 bels
Operating: 4.3 bels
For microprocessors greater than or equal to 2.8 GHz:
Average sound-pressure levels:
At operator position:
Idle: 29 dBA
Operating: 31 dBA
At bystander position -1meter (3.3 ft):
Idle: 28 dBA
Operating: 29 dBA
Declared (upper limit) sound-power levels:
Idle: 4.3 bels
Operating: 4.4 bels
Note: These levels were measured in controlled acoustical
environments according to the procedures specified by the
American National Standards Institute (ANSI) S12.10 and ISO
7779 and are reported in accordance with ISO 9296. Actual
sound-pressure levels in agiven location might exceed the
average values stated because of room reflections and other
nearby noise sources. The declared sound-power levels indicate
an upper limit, below which alarge number of computers will
operate.
6Hardware Maintenance Manual

Types 8128, 8187, 8188, 8193, 8414, and 8431
This section lists the physical specifications for the computer.
Dimensions
Height: 140 mm (5.5 in.)
Width: 425 mm (16.7 in.)
Depth: 425 mm (16.7 in)
Weight
Minimum configuration as shipped: 10.0 kg (22 lb)
Maximum configuration: 11.4 kg (25.0 lb)
Environment
Air temperature:
System on: 10° to 35°C (50° to 95° F)
System off: 10° to 43°C (50° to 110° F)
Maximum altitude: 2134 m(7000 ft)
Note: The maximum altitude, 2134 m(7000 ft), is the
maximum altitude at which the specified air temperatures
apply. At higher altitudes, the maximum air temperatures
are lower than those specified.
Humidity:
System on: 8% to 80%
System off: 8% to 80%
Electrical input
Input voltage:
Low range:
Minimum: 90 Vac
Maximum: 180 Vac
Input frequency range: 47–53 Hz
Voltage switch setting: 115 Vac
High range:
Minimum: 137 Vac
Maximum: 265 Vac
Input frequency range: 57–63 Hz
Voltage switch setting: 230 Vac
Input kilovolt-amperes (kVA) (approximate):
Minimum configuration as shipped: 0.08 kVA
Maximum configuration: 0.3 kVA
Note: Power consumption and heat output vary depending
on the number and type of optional features installed and
the power-management optional features in use.
Heat output (approximate) in British thermal units (Btu) per
hour:
Minimum configuration: 257 Btu/hr (75 watts)
Maximum configuration: 785 Btu/hr (230 watts)
Airflow
Approximately 0.51 cubic meters per minute (18 cubic feet
per minute) maximum
Acoustical noise-emission values
Average sound-pressure levels:
At operator position:
Idle: 30 dBA
Operating: 32 dBA
At bystander position -1meter (3.3 ft):
Idle: 26 dBA
Operating: 30 dBA
Declared (upper limit) sound-power levels:
Idle: 4.0 bels
Operating: 4.3 bels
Note: These levels were measured in controlled acoustical
environments according to the procedures specified by the
American National Standards Institute (ANSI) S12.10 and
ISO 7779 and are reported in accordance with ISO 9296.
Actual sound-pressure levels in agiven location might
exceed the average values stated because of room reflections
and other nearby noise sources. The declared sound-power
levels indicate an upper limit, below which alarge number
of computers will operate.
Chapter 2. General information 7

Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433
This section lists the physical specifications for the computer.
Dimensions
Height: 413 mm (16.25 in.)
Width: 191 mm (7.5 in.)
Depth: 406 mm (16 in.)
Weight
Minimum configuration as shipped: 9.1 kg (20 lb)
Maximum configuration: 10.2 kg (22.5 lb)
Environment
Air temperature:
System on: 10° to 35°C (50° to 95° F)
System off: 10° to 43°C (50° to 110° F)
Maximum altitude: 2134 m(7000 ft)
Note: The maximum altitude, 2134 m(7000 ft), is the
maximum altitude at which the specified air temperatures
apply. At higher altitudes, the maximum air temperatures
are lower than those specified.
Humidity:
System on: 8% to 80%
System off: 8% to 80%
Electrical input
Input voltage:
Low range:
Minimum: 90 Vac
Maximum: 180 Vac
Input frequency range: 47–53 Hz
Voltage switch setting: 115 Vac
High range:
Minimum: 137 Vac
Maximum: 265 Vac
Input frequency range: 57–63 Hz
Voltage switch setting: 230 Vac
Input kilovolt-amperes (kVA) (approximate):
Minimum configuration as shipped: 0.08 kVA
Maximum configuration: 0.3 kVA
Note: Power consumption and heat output vary depending
on the number and type of optional features installed and
the power-management optional features in use.
Heat output (approximate) in British thermal units (Btu) per
hour:
Minimum configuration: 257 Btu/hr (75 watts)
Maximum configuration: 785 Btu/hr (230 watts)
Airflow
Approximately 0.68 cubic meters per minute (24 cubic feet
per minute) maximum
Acoustical noise-emission values
Average sound-pressure levels:
At operator position:
Idle: 28 dBA
Operating: 30 dBA
At bystander position -1meter (3.3 ft):
Idle: 26 dBA
Operating: 29 dBA
Declared (upper limit) sound-power levels:
Idle: 4.1 bels
Operating: 4.3 bels
Note: These levels were measured in controlled acoustical
environments according to the procedures specified by the
American National Standards Institute (ANSI) S12.10 and
ISO 7779 and are reported in accordance with ISO 9296.
Actual sound-pressure levels in agiven location might
exceed the average values stated because of room reflections
and other nearby noise sources. The declared sound-power
levels indicate an upper limit, below which alarge number
of computers will operate.
8Hardware Maintenance Manual

Types 8196 and 8197
This section lists the physical specifications for the computer.
Dimensions
Height: 398 mm (15.67 in.)
Width: 180 mm (7.08 in.)
Depth: 402 mm (15.82 in.)
Weight
Minimum configuration as shipped: 7.6 kg (16.8 lb)
Maximum configuration: 9.97 kg (22 lb)
Environment
Air temperature:
System on: 10° to 35°C (50° to 95° F)
System off: 10° to 43°C (50° to 110° F)
Maximum altitude: 2134 m(7000 ft)
Note: The maximum altitude, 2134 m(7000 ft), is the
maximum altitude at which the specified air temperatures
apply. At higher altitudes, the maximum air temperatures
are lower than those specified.
Humidity:
System on: 8% to 80%
System off: 8% to 80%
Electrical input
Input voltage:
Low range:
Minimum: 90 Vac
Maximum: 180 Vac
Input frequency range: 47–53 Hz
Voltage switch setting: 115 Vac
High range:
Minimum: 137 Vac
Maximum: 265 Vac
Input frequency range: 57–63 Hz
Voltage switch setting: 230 Vac
Input kilovolt-amperes (kVA) (approximate):
Minimum configuration as shipped: 0.08 kVA
Maximum configuration: 0.30 kVA
Note: Power consumption and heat output vary depending
on the number and type of optional features installed and
the power-management optional features in use.
Heat output (approximate) in British thermal units (Btu) per
hour:
Minimum configuration: 257 Btu/hr (75 watts)
Maximum configuration: 785 Btu/hr (230 watts)
Airflow
Approximately 0.68 cubic meters every minute (24 cubic feet
every minute) maximum
Acoustical noise-emission values
For microprocessors less than 2.8 GHz:
Average sound-pressure levels:
At operator position:
Idle: 28 dBA
Operating: 35 dBA
At bystander position -1meter (3.3 ft):
Idle: 25 dBA
Operating: 33 dBA
Declared (upper limit) sound-power levels:
Idle: 4.0 bels
Operating: 4.7 bels
For microprocessors greater than or equal to 2.8 GHz:
Average sound-pressure levels:
At operator position:
Idle: 33 dBA
Operating: 35 dBA
At bystander position -1meter (3.3 ft):
Idle: 30 dBA
Operating: 33 dBA
Declared (upper limit) sound-power levels:
Idle: 4.4 bels
Operating: 4.7 bels
Note: These levels were measured in controlled acoustical
environments according to the procedures specified by the
American National Standards Institute (ANSI) S12.10 and ISO
7779 and are reported in accordance with ISO 9296. Actual
sound-pressure levels in agiven location might exceed the
average values stated because of room reflections and other
nearby noise sources. The declared sound-power levels indicate
an upper limit, below which alarge number of computers will
operate.
Chapter 2. General information 9

10 Hardware Maintenance Manual

Chapter 3. General Checkout
Note: The fans in this system may turn off under normal operation. This is a
noise-level reduction feature, and should not be taken to mean there is
something wrong with the system.
The following tools are available to help identify and resolve hardware-related
problems.
vIBM Setup Utility program
vPower-On Self-Test (POST)
–POST Beep Codes
–Error Code Format
v
IBM Enhanced Diagnostics program
vProduct recovery utility
–Factory Contents
–Partial recovery
v
Repair utility
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 atest program finds aproblem with a
hardware option. For the test programs to properly determine if atest Passed,Failed
or Aborted,the test programs check the error-return code at test completion. See
Chapter 4, “IBM Enhanced Diagnostics,” on page 15.
General error messages appear if aproblem 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:
vBy default, the computer starts up quiet (no beep and no memory count and checkpoint
code display) when no errors are detected by POST.
vTo enable beep and memory count and checkpoint code display when asuccessful POST
occurs, do the following:
1. Select Start Options in the IBM Setup Utility program (see Chapter 5, “IBM Setup
Utility program,” on page 19).
2. Set Power-On Self-Test to Enhanced.
v
Before replacing any FRUs, ensure that the latest level of BIOS is installed on the system.
Adown-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 112..
vIf multiple error codes are displayed, diagnose the first error code displayed.
©Copyright IBM Corp. 2005 11

001
1. Power-off the computer and all external devices.
2. Make sure that all external cables and power cords are properly connected.
3. Remove the cover and make sure that all cables to the system board are seated
properly.
4. Set all monitor controls to the middle position.
5. Power-on all external devices.
6. Power-on the computer.
7. Check the power-on indicator and listen for the fan(s).
DID THE COMPUTER POWER-ON AND STAY ON?
YES, continue to 002.
NO, go to “Undetermined problems” on page 109.
002
DID YOU HEAR ANY BEEPS WHEN POWERING ON?
YES, go to “Beep symptoms” on page 89.
NO, continue to 003.
003
IS ANYTHING DISPLAYED ON THE MONITOR SCREEN?
YES, continue to 004.
NO, make sure that the monitor is working properly. Most monitors have some
sort of diagnostic self test. Refer to the manual for your monitor.
If you determine that the monitor is working properly, make sure it is properly
connected to the computer. Otherwise, go to “Undetermined problems” on page
109.
004
DID YOU RECEIVE THE EXPECTED RESPONSE?
YES, continue to 005.
NO, proceed to 006.
005
Run the Diagnostic programs. If necessary, refer to Chapter 4, “IBM Enhanced
Diagnostics,” on page 15.
vIf you receive an error, replace the part that the diagnostic program calls out or
go to Chapter 7, “Symptom-to-FRU Index,” on page 69.
vIf an installed device is not recognized by the diagnostics program, that device
might be defective.
12 Hardware Maintenance Manual

vIf the test stops and you cannot continue, replace the last device tested.
006
IS APOST ERROR CODE DISPLAYED?
If YES, go to “POST error codes” on page 92.
If NO, continue to 007.
007
1. Power-off the computer.
2. Press and hold the F1 key and power-on the computer to start the IBM Setup
Utility program (see Chapter 5, “IBM Setup Utility program,” on page 19).
Release the F1 key when you hear beeps.
3. Select Exit, Load Default Settings, and Save and exit the Setup Utility.
4. If the problem persists, continue to 008.
008
Run the Diagnostic programs. If necessary, refer to Chapter 4, “IBM Enhanced
Diagnostics,” on page 15.
vIf you receive an error, replace the part that the diagnostic program calls out or
go to Chapter 7, “Symptom-to-FRU Index,” on page 69.
vIf the test stops and you cannot continue, replace the last device tested.
Chapter 3. General Checkout 13

14 Hardware Maintenance Manual