Power Supply Connector

.5/

1

2

 

 

19

 

20

 

 

 

 

 

 

 

Pin

 

Signal

 

V dc

V dc

 

 

 

 

Min.

Max.

 

 

 

 

 

 

2,

3

GND

 

 

 

 

 

 

 

4

 

SUB

12

+11.4

+12.6

 

 

 

 

 

 

5

 

GND

 

 

 

 

 

 

 

6,

7

+12

volts

+11.4

+12.6

 

 

 

 

 

 

8

 

GND

 

 

 

 

 

 

9—11

+3.3

 

+3.0

+3.6

 

 

 

 

 

12—14

GND

 

 

 

 

 

 

15—17

+5

 

+4.75

+5.25

 

 

 

 

 

18—20

GND

 

 

 

 

 

 

 

Checking

the

Installed

Devices

List

 

 

 

 

If a device is installed

but

the

icon

appears in a gray shade

rather

than

a

dark

shade

on the

basic

diagnostics screen,

the device is defective. Reseat the

device

connectors. If

the symptom

remains,

replace

the device or the system

board. If needed, adjust the contrast control to clearly

distinguish

the

shades

of

the

icon.

 

 

 

If a device that is not

installed

appears in

a dark shade (for

example, FDD-2 appears in a

dark

shadeNO

when

 

second

FDD

is

installed),

do

the

 

following:

 

1.

Replace

firstthe device in

the configuration, such as

 

an FDD-1,

HDD-1.

 

2.

If the problem remains,

replace the system board.

The PCMCIA-1, parallel, and serial icons are always displayed in a dark shade because the icons represent

subsystems of the system board

and not the attachment of

the

devices.

 

The

FDD-1, HDD-1, or PCMCIA-1 icons

representfirst the

drive in the system configuration for each type of device. Similarly, the HDD-3, FDD-2, or PCMCIA-2 icons represent

thesecond drive, usually attached through a port replicator or an expansion unit.

The HDD-2 icon represents the hard disk drive in the UltraBay of the computer. The HDD-3 or HDD-4 icons represent the hard disk drive in the SelectaDock Docking

8 IBM Mobile Systems HMM

Page 16
Image 16
IBM S84H-4552-00 manual List, Min Max