Aaeon PCM-6890 User manual

Quick Installation Guide

PCM-6890 Installation Guide 1

PCM-6890

Notice:

This guide is designed for experienced users to

setup the system within the shortest time. For

detailed information, please always refer to the

electronic user's manual.

Safety Precautions

PCM-6890

All-in-One Socket 370 Celeron Single Board Computer

with LCD, Ethernet, Audio, & 4 COMs

Part no. 2007689000 1st Ed. Printed in Taiwan May 1999

Quick Installation Guide

Warning! Always completely disconnect the power cord

from your chassis whenever you work with the

hardware. Do not make connections while the

power is on. Sensitive electronic components

can be damaged by sudden power surges. Only

experienced electronics personnel should open the

PC chassis.

Caution! Always ground yourself to remove any static

charge before touching the CPU card. Modern

electronic devices are very sensitive to static

electric charges. As a safety precaution, use a

grounding wrist strap at all times. Place all

electronic components in a static-dissipative

surface or static-shielded bag when they are not

in the chassis.

PCM-6890

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PCM-6890

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Locating jumpers

SW1

J8J10

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Quick Installation Guide

PCM-6890 Installation Guide 3

PCM-6890

Locating connectors

CN1

CN2

U18

CN6

CN8

CN7

CN17

CN13

LED2

CN17

CN15

CN14 CN16

CN9

CN10

CN4

CN11

CN16CN14 CN12CN15

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Jumpers and connectors

Connectors on the board link it to external devices such as hard

disk drives, a keyboard, or floppy drives. In addition, the board

has a number of jumpers that allow you to configure your system

to suit your application.

The following tables list the function of each of the board's jumpers

and connectors.

Jumpers

Label Function

J1 Clear CMOS

J2 System temperature thermal sensor

J3 COM4 RI pin voltage select

J4 COM3 RI pin voltage select

J5 Audio output select

J6 ATX soft-power switch connector

J7 COM2 RS-232/422/485 select

J8 LCD clock select

J9 LCD driving voltage select

J10 COM2 RS-232/422/485 select

SW1 (4~6) CPU frequency ratio

SW1 (2~3) DOC address select

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Quick Installation Guide

PCM-6890 Installation Guide 5

PCM-6890

Connectors

Label Function

CN1 CPU fan power connector

CN2 PC/104 connector

CN3 USB ports connector

CN4 CD-ROM signal input connector

CN6 IDE drive connector

CN7 Front panel connector

CN8 IrDA connector

CN9 ATX power connector

CN10 LCD display connector

CN11 Keyboard and PS/2 mouse connector

CN12 VGA display connector

CN13 Audio connector

CN14 Printer port connector

CN15 100Base-Tx Ethernet connector

CN16 Serial ports connector

CN17 Floppy dirve connector

U18 DiskOnChip socket

LED2 Ethernet Tx/Rx/Link LED connector

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COM3/COM4 RI pin voltage select

(J3, J4)

The 9th pin of COM3 and COM4 (9-pin D-sub connector) can be

selected as RI, +5V, or +12V by setting J3 & J4.

COM3 RI pin setting (J4)

RI* +5V +12V

COM4 RI pin setting (J3)

RI * +5V +12V

*default

Clear CMOS (J1)

You can use J1 to clear the CMOS data if necessary. To reset the

CMOS data, set J4 to 2-3 closed for just a few seconds, and then

move the jumper back to 1-2 closed.

Clear CMOS (J1) Protect* Clear CMOS

*default

1 3 5

2 4 6

1 3 5

2 4 6

1 3 5

2 4 6

1 3 5

2 4 6

1 3 5

2 4 6

1 3 5

2 4 6

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Quick Installation Guide

PCM-6890 Installation Guide 7

PCM-6890

ATX Soft-Power Switch connector

(J6) The ATX Soft-Power switch connector is a 2-pin header. Locate

the power switch cable from your system. It is a 2-pin female

connector. Plug this connector to the Soft-Power switch connector

marketedJ6.

Audio output select (J5)

You can select the output mode of onboard audio connector

(CN14) by setting J5.

"Speaker out" is the output signal amplified by onboard amplifier

Audio output select (J5)

Line out * Speaker out

*default

2 1

4 3

6 5

2 1

4 3

6 5

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COM2 RS-232/422/485 select (J10, J7)

ThePCM-6890 COM2 serial portcan be selected asRS-232, RS-422,

or RS-485 by setting J10 & J7.

COM2 Select (J10, J7)

RS-232* RS-422 RS-485

J10

*default

1 4 7 10

3 6 9 12

1 4 7 10

3 6 9 12

1 4 7 10

3 6 9 12

1 3 5

2 4 6

1 3 5

2 4 6

1 3 5

2 4 6

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Quick Installation Guide

PCM-6890 Installation Guide 9

PCM-6890

LCD clock signal select (J8)

You can select the LCD control signal by setting J8. The following

charts show the available option.

LCD clock signal select (J8)

SHF CLK * ASHF CLK

*default

1 2 3 1 2 3

LCD driving voltage select (J9)

You can select the LCD connector CN10 (pin 5 and pin 6) driving

voltage by setting J9. The configurations are as follows:

LCD driving voltage select (J9)

5V 3.3V *

*default

1 2 3 1 2 3

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SW1 (4~6) CPU frequency ratio

CPU core frequency = CPU frequency ratio (2~5.5) * External bus

clock(66or100MHz)

UPC YCNEUQERF OITAR )4(1WS)5(1WS)6(1WS

X2NOFFOFFO

X5.2NOFFONO

X3NONOFFO

X5.3NONONO

X4FFOFFOFFO

X5.4FFOFFONO

X5FFONOFFO

X5.5FFONONO

* default

Note:

Most Celeron CPUs' frequency ratio are pre-locked

within the CPUs. These CPUs run at fixed speed

(frequency)regardlessoftheconfigurationslistedabove.

IftheCPUyouare using requires higher ratiothen5.5X,it

is most likely pre-locked.

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