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Recovering, Power, checkout

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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 a BIOS flash diskette. Note: You can obtain a BIOS flash diskette from one of the following sources: v Use the ServerGuide program to make a BIOS flash diskette. v Download a BIOS flash diskette from the World Wide Web. Go to http://www.ibm.com/pc/support/, click IBM Server Support, and make the selections for your server. v Contact your IBM service representative. Complete the following steps to recover the BIOS code: 1. Turn off the server and disconnect all power cords and external cables; then, remove the server cover (see "Removing the left-side cover" on page 55). 2. Locate the boot block recovery jumper (J28) on the system board. See "System-board switches and jumpers" on page 51 for jumper location. 3. Remove the jumper from pins 1 and 2 of boot block recovery jumper and place it on pins 2 and 3 of the boot block recovery jumper to enable BIOS recovery mode. 4. Insert the BIOS flash diskette into the diskette drive. 5. Reconnect all power cords; then, reinstall the server cover. 6. Restart the server. The system begins the power-on self-test (POST). 7. Select 1 - Update POST/BIOS from the menu that contains various flash (update) options. 8. When prompted as to whether you want to save the current code to a diskette, press N. 9. When prompted to choose a language, select a language (from 0 to 7) and press Enter to accept your choice. 10. Do not restart your server at this time. 11. Remove the BIOS flash diskette from the diskette drive. 12. Turn off the server and disconnect all power cords; then, remove the server cover. 13. Remove the jumper from pins 2 and 3 of boot block recovery jumper (J28) and place it on pins 1 and 2 of the boot block recovery jumper to return to normal startup mode. 14. Reconnect all external cables and power cords and turn on the peripheral devices; then, reinstall the server cover and restart the server. The system starts. Power checkout Power problems can be difficult to solve. For example, a short circuit can exist anywhere on any of the power distribution buses. Usually a short circuit will cause the power subsystem to shut down because of an overcurrent condition. A general procedure for troubleshooting power problems is as follows: 1. Turn off the server and disconnect all ac power cords. 2. Check for loose cables in the power subsystem. Also check for short circuits, for example, if there is a loose screw causing a short circuit on a circuit board. 40 xSeries 235 Type 8671: Hardware Maintenance Manual and Troubleshooting Guide

Section	Page
About this manual	5
Important safety information	5
Online support	5
Contents	7
Chapter 1. General information	11
Related publications	11
Notices and statements used in this book	12
Features and specifications	13
Server controls and indicators	14
Front view	14
Rear view	16
Operator information panel	17
Server power features	18
Turning on the server	18
Turning off the server	19
Standby mode	19
IBM documentation CD	20
System requirements	20
Starting the IBM Documentation Browser	20
Using the IBM Documentation Browser	21
Using the search feature	21
IBM Director	21
Installing IBM Director updates	22
UpdateXpress	23
Chapter 2. Configuration	25
Using the Configuration/Setup Utility program	25
Starting the Configuration/Setup Utility program	25
Choices available from the Configuration/Setup main menu	26
Additional Configuration/Setup Utility menu choices	29
Using passwords	29
Power-on password	29
Administrator password	30
Using the LSI Logic Configuration Utility program	31
Starting the LSI Logic Configuration Utility program	31
Formatting a SCSI hard disk drive	32
Using the ServerGuide Setup and Installation CD	32
ServerGuide features	32
Setup and configuration overview	33
System Partition	34
Typical operating-system installation	34
Setting up or updating multiple servers	35
Installing your operating system without ServerGuide	35
Using ServeRAID Manager	35
Configuring the Gigabit Ethernet controller	36
High-performance Ethernet modes	37
Ethernet port connector	37
Updating the integrated system management firmware	37
Chapter 3. Diagnostics	39
General checkout	39
Diagnostic tools overview	41
POST error logs	41
Viewing error logs from the Configuration/Setup Utility program	42
Viewing error logs from the diagnostic programs	42
ServerGuide error symptoms	42
Small computer system interface messages	43
Diagnostic programs and error messages	43
Text messages	44
Starting the diagnostic programs	44
Viewing the test log	45
Viewing the System Error log	45
Diagnostic error message tables	45
Identifying problems using status LEDs	46
LEDs for Active PCI slots	46
Power-supply LEDs	48
Light path diagnostics	48
Diagnostic panel LEDs	49
Remind button	49
Recovering the BIOS code	50
Power checkout	50
Troubleshooting the Ethernet controller	51
Network connection problems	51
Ethernet controller troubleshooting chart	51
Ethernet controller messages	53
Chapter 4. Customer replaceable units	55
Installation guidelines	55
System reliability considerations	55
Working inside the server with the power on	56
Handling static-sensitive devices	56
Major components of the xSeries 235 Type 8671 server	56
System-board component locations	58
System-board option connectors	58
System-board internal cable connectors	59
System-board external port connectors	60
System-board switches and jumpers	61
System-board LED locations	63
Removing the server door (tower model)	64
Removing the server left-side cover and bezel (tower model)	65
Removing the left-side cover	65
Removing the bezel	66
Removing the server top cover and bezel (rack configuration)	67
Removing the top cover	67
Removing the bezel	68
Removing and installing the adapter-support bracket	68
Working with adapters	70
Adapter considerations	70
Installing a hot-plug adapter (slots 5 and 6)	72
Installing a non-hot-plug adapter (any slot)	74
Cabling example for a ServeRAID controller	76
Working with the 3-Pack Ultra320 Hot-Swap Expansion option	80
Installing the 3-Pack Ultra320 Hot-Swap Expansion option	81
Installing internal drives	84
Internal drive bays	85
Installing a hot-swap hard disk drive	87
Installing a 5.25-inch removable-media drive	88
Memory technology transition	89
Installing memory modules	90
Installing an additional microprocessor	92
Replacing a hot-swap power supply	97
Installing a hot-swap power-supply option	100
Replacing a hot-swap fan	104
Replacing a front fan	106
Replacing a center fan	106
Replacing a rear fan	106
Replacing the battery	107
Completing the installation	109
Installing the server bezel and left-side cover (tower model)	110
Installing the server door (tower model)	112
Installing the server bezel and top cover (rack configuration)	113
Updating your server configuration	114
Connecting external options	114
Installing the external SCSI connector	115
Installing the second serial connector	115
Connecting an external device	116
Cabling the server	116
Keyboard cabling	117
Pointing device cabling	117
Parallel port cabling	117
Serial cabling	117
Advanced System Management Interconnect cabling	117
USB cabling	118
Video cabling	118
Gigabit Ethernet cabling	118
Power cabling	118
Installing the server in a rack	118
Input/output connectors	118
Parallel port	119
Viewing or changing the parallel-port assignments	119
Parallel port connector	120
Video port	120
Keyboard port	120
Auxiliary-device (pointing device) port	120
Ultra320 SCSI system-board connectors	120
SCSI cabling requirements	121
SCSI IDs	121
SCSI connectors	122
Serial ports	122
Viewing or changing the serial-port assignments	122
Serial-port connectors	123
Universal Serial Bus version 1.1 ports	123
USB cables and hubs	123
USB-port connectors	123
Gigabit Ethernet port	123
Ethernet connector	124
RS-485 (ASM interconnect) ports	124
Chapter 5. Service replaceable units	125
Thermal grease	125
System board	126
Microprocessor removal	127
Operator information panel	129
Diskette drive	131
DASD backplane	132
Power-supply (non-hot-swap)	133
Front fan housing	134
Hot-swap card	135
Diagnostics panel card	135
Power reset card	136
Chapter 6. Symptom-to-FRU index	139
Beep symptoms	139
No-beep symptoms	142
Diagnostic panel system error LED	142
Diagnostic error codes	144
Error symptoms	149
Power-supply LED errors	156
POST error codes	157
Service processor error codes	163
SCSI error codes	163
Temperature error messages	163
Fan error messages	164
Power error messages	164
System shutdown	165
Voltage related system shutdown	165
Temperature related system shutdown	166
DASD checkout	166
Host built-in self test (BIST)	166
Bus fault messages	167
Undetermined problems	167
Problem determination tips	168
Chapter 7. Parts listing for the xSeries 235	171
System	172
Keyboard CRUs	174
Power cord CRUs	176
Appendix A. Getting help and technical assistance	177
Before you call	177
Using the documentation	177
Getting help and information from the World Wide Web	177
Software service and support	178
Hardware service and support	178
Appendix B. Related service information	179
Safety information	179
General safety	179
Electrical safety	180
Safety inspection guide	181
Handling electrostatic discharge-sensitive devices	182
Grounding requirements	182
Safety notices (multilingual translations)	182
Appendix C. Notices	215
Edition notice	215
Trademarks	216
Important notes	216
Product recycling and disposal	217
Electronic emission notices	217
Federal Communications Commission (FCC) statement	217
Industry Canada Class A emission compliance statement	218
Australia and New Zealand Class A statement	218
United Kingdom telecommunications safety requirement	218
European Union EMC Directive conformance statement	218
Taiwanese Class A warning statement	219
Chinese Class A warning statement	219

Match case Limit results 1 per page

Recovering

the

BIOS

code

the

BIOS

code

has

become

damaged,

such

from

power

failure

during

flash

update,

you

can

recover

the

BIOS

code

using

BIOS

flash

diskette.

Note:

You

can

obtain

BIOS

flash

diskette

from

one

the

following

sources:

Use

the

ServerGuide

program

make

BIOS

flash

diskette.

Download

BIOS

flash

diskette

from

the

World

Wide

Web.

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

click

IBM

Server

Support

and

make

the

selections

for

your

server.

Contact

your

IBM

service

representative.

Complete

the

following

steps

recover

the

BIOS

code:

Turn

off

the

server

and

disconnect

all

power

cords

and

external

cables;

then,

remove

the

server

cover

(see

“Removing

the

left-side

cover”

page

55).

Locate

the

boot

block

recovery

jumper

(J28)

the

system

board.

See

“System-board

switches

and

jumpers”

page

for

jumper

location.

Remove

the

jumper

from

pins

and

boot

block

recovery

jumper

and

place

pins

and

the

boot

block

recovery

jumper

enable

BIOS

recovery

mode.

Insert

the

BIOS

flash

diskette

into

the

diskette

drive.

Reconnect

all

power

cords;

then,

reinstall

the

server

cover.

Restart

the

server.

The

system

begins

the

power-on

self-test

(POST).

Select

Update

POST/BIOS

from

the

that

contains

various

flash

(update)

options.

When

prompted

whether

you

want

save

the

current

code

diskette,

press

When

prompted

choose

language,

select

language

(from

and

press

Enter

your

choice.

10.

not

restart

your

server

this

time.

11.

Remove

the

BIOS

flash

diskette

from

the

diskette

drive.

12.

Turn

off

the

server

and

disconnect

all

power

cords;

then,

remove

the

server

cover.

13.

Remove

the

jumper

from

pins

and

boot

block

recovery

jumper

(J28)

and

place

pins

and

the

boot

block

recovery

jumper

return

normal

startup

mode.

14.

Reconnect

all

external

cables

and

power

cords

and

turn

the

peripheral

devices;

then,

reinstall

the

server

cover

and

restart

the

server.

The

system

starts.

Power

checkout

Power

problems

can

difficult

solve.

For

example,

short

circuit

can

exist

anywhere

any

the

power

distribution

buses.

Usually

short

circuit

will

cause

the

power

subsystem

shut

down

because

overcurrent

condition.

general

procedure

for

troubleshooting

power

problems

follows:

Turn

off

the

server

and

disconnect

all

power

cords.

Check

for

loose

cables

the

power

subsystem.

Also

check

for

short

circuits,

for

example,

there

loose

screw

causing

short

circuit

board.

xSeries

235

Type

8671:

Hardware

Maintenance

Manual

and

Troubleshooting

Guide