IBM 8840 Hardware Maintenance Manual - Page 28

Press

the

reset

button

to

reset

the

server

and

run

the

power-on

self-test

(POST).

You

might

have

to

use

a

pen

or

the

end

of

a

straightened

paper

clip

to

press

the

button.

The

server

is

designed

so

that

LEDs

remain

lit

when

the

server

is

connected

to

an

ac

power

source

but

is

not

turned

on,

provided

that

the

power

supply

is

operating

correctly.

This

feature

helps

you

to

isolate

the

problem

when

the

operating

system

is

shut

down.

Diagnosing

problems

using

light

path

diagnostics

LEDs

in

two

locations

on

the

server

are

available

to

help

you

diagnose

problems

that

might

occur

during

installation.

Use

them

in

the

following

order:

1.

Light

path

diagnostics

panel

–

Look

at

this

panel

first.

If

a

system

error

has

occurred,

the

system-error

LED

on

the

front

of

the

light

path

diagnostics

drawer

is

lit.

Slide

the

latch

to

the

left

on

the

front

of

the

light

path

diagnostics

drawer

to

access

the

light

path

diagnostics

panel.

Note

any

LEDs

that

are

lit,

and

then

close

the

drawer.

2.

LEDs

on

the

system

board

–

To

identify

the

component

that

is

causing

the

error,

note

the

lit

LED

on

or

beside

the

component.

Light

path

diagnostics

LEDs

For

a

complete

list

of

the

LEDs

on

the

light

path

diagnostics

panel,

the

problems

they

indicate,

and

actions

to

solve

the

problems

see

“Light

path

diagnostics

LEDs”

on

page

83.

Recovering

the

BIOS

code

If

the

BIOS

code

has

become

damaged,

such

as

from

a

power

failure

during

a

flash

update,

you

can

recover

the

BIOS

code

using

the

boot

block

jumper

and

a

BIOS

recovery

diskette.

Note:

You

can

obtain

a

BIOS

recovery

diskette

from

one

of

the

following

sources:

v

Use

the

ServerGuide

Setup

and

Installation

CD

to

make

a

BIOS

recovery

diskette.

v

Download

a

BIOS

recovery

diskette

from

the

World

Wide

Web.

Go

to

http://www.ibm.com/support/,

click

IBM

Server

Support

,

and

make

the

selections

for

your

server.

v

Contact

your

IBM

service

representative.

The

flash

memory

of

your

server

contains

a

protected

area

that

cannot

be

overwritten.

The

recovery

boot

block

is

a

section

of

code

in

this

protected

area

that

enables

the

server

to

start

up

and

to

read

a

recovery

diskette.

The

recovery

utility

recovers

the

system

BIOS

code

from

the

BIOS

recovery

files

on

the

diskette.

Complete

the

following

steps

to

recover

the

BIOS

code:

1.

Turn

off

the

server,

and

disconnect

all

power

cords

and

external

cables.

2.

Remove

the

server

cover.

See

“Removing

the

cover”

on

page

28

for

more

information.

3.

Locate

the

flash

boot

block

recovery

jumper

block

(J60)

on

the

system

board.

18

xSeries

346

Types

8840

and

1880:

Hardware

Maintenance

Manual

and

Troubleshooting

Guide

Section	Page
Contents	5
About this document	9
Important safety information	9
Online support	10
Chapter 1. Introduction	11
Related documentation	11
Notices and statements in this book	12
Features and specifications	13
Server power, controls, and indicators	14
Front view	14
Rear view	15
Server power features	16
Turning on the server	16
Turning off the server	17
Chapter 2. Configuring the server	19
Starting the Configuration/Setup Utility program	20
Chapter 3. Diagnostics	21
General checkout	21
Diagnostic tools overview	22
POST error logs	23
Viewing error logs from the Configuration/Setup Utility program	23
Viewing error logs from diagnostic programs	23
ServerGuide error symptoms	23
Small computer system interface messages	24
Diagnostic programs and error messages	24
Diagnostic text message format	25
Starting the diagnostic programs	25
Viewing the test log	26
Viewing the system-error log or BMC log	26
Identifying problems using status LEDs	26
Power-on password override	26
Power supply LEDs	27
Light path diagnostics	27
Diagnosing problems using light path diagnostics	28
Light path diagnostics LEDs	28
Recovering the BIOS code	28
Power checkout	29
Troubleshooting the Ethernet controller	30
Network connection problems	30
Ethernet controller troubleshooting chart	31
Ethernet controller messages	31
Chapter 4. Installing options	33
Installation guidelines	33
System reliability guidelines	34
Working inside the server with the power on	34
Handling static-sensitive devices	35
Major components of the xSeries 346 Type 8640 server	36
Removing the cover	38
Removing the air baffle	39
Working with adapters	40
Installing a hot-swap drive	48
Installing memory modules	49
Installing a microprocessor	52
Installing a hot-swap power supply	57
Replacing a hot-swap fan	59
Replacing the battery	60
Completing the installation	61
Connecting the cables	62
Updating the server configuration	63
Connecting external options	64
Power-cage card internal cable connectors	64
Input/output connectors	65
Auxiliary-device (pointing device) connector	65
Ethernet connectors	66
Advanced Systems Management (ASM) connectors	66
Keyboard connector	66
Serial connector	66
Ultra320 SCSI controller system-board connectors	66
SCSI cabling requirements	67
SCSI IDs	67
SCSI connector	67
Universal Serial Bus version 1.1 or 2.0 connectors	68
Video connector	68
Chapter 5. Field replaceable units	69
Thermal grease	69
Fan bracket	70
Power cage assembly	71
Hard disk drive backplane	72
Media cage	73
Removing a microprocessor	74
System board	76
System-board option connectors	76
System-board internal cable connectors	77
System-board external connectors	77
System-board switches and jumpers	78
System-board LEDs	79
Removing the system board and shuttle	80
Chapter 6. Symptom-to-FRU index	83
Beep symptoms	84
No-beep symptoms	87
POST error codes	87
Light path diagnostics LEDs	93
Diagnostic error codes	95
Error symptoms	100
DVD-ROM drive error symptoms	101
Diskette drive error symptoms	101
General error symptoms	101
Hard disk drive error symptoms	102
Intermittent error symptoms	102
Keyboard, mouse, or pointing device error symptoms	102
Memory error symptoms	103
Microprocessor error symptoms	103
Monitor error symptoms	103
Option error symptoms	105
Power error symptoms	105
Serial port error symptoms	106
ServerGuide error symptoms	107
Software error symptoms	108
Power-supply LED errors	109
Service processor error codes	109
SCSI error codes	109
Temperature error messages	110
Fan error messages	111
Power error messages	111
System shutdown	111
Voltage related system shutdown	112
Temperature related system shutdown	112
Hard disk drive checkout	113
Host built-in self test (BIST)	113
Bus fault messages	113
Undetermined problems	113
Problem determination tips	114
Chapter 7. Parts listing xSeries 346 Types 8840 and 1880	117
System	118
System replaceable units	119
Keyboard CRUs	122
Power cords	123
Appendix A. Getting help and technical assistance	125
Before you call	125
Using the documentation	125
Getting help and information from the World Wide Web	125
Software service and support	126
Hardware service and support	126
Appendix B. Safety information	127
General safety	127
Electrical safety	128
Safety inspection guide	129
Handling electrostatic discharge-sensitive devices	130
Grounding requirements	130
Safety notices (multilingual translations)	130
Appendix C. Notices	165
Edition notice	165
Trademarks	166
Important notes	166
Product recycling and disposal	167
Battery return program	167
Electronic emission notices	168
Federal Communications Commission (FCC) statement	168
Industry Canada Class A emission compliance statement	168
Australia and New Zealand Class A statement	168
United Kingdom telecommunications safety requirement	168
European Union EMC Directive conformance statement	169
Taiwanese Class A warning statement	169
Chinese Class A warning statement	169
Japanese Voluntary Control Council for Interference (VCCI) statement	169

IBM 8840 Hardware Maintenance Manual - Page 28

Recovering

Page 28 highlights