Nexcom EBC 355 User manual

NEXCOM International Co., Ltd.
NEXCOM International Co., Ltd.
Published April 2015 www.nexcom.com
IoT Automation Solutions
Embedded Computing (3.5” CPU Board)
EBC 355
User Manual

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. ii EBC 355 User Manual
Content
Contents
Preface
Copyright ............................................................................................. iv
Disclaimer.............................................................................................. iv
Acknowledgements ............................................................................... iv
Regulatory Compliance Statements........................................................ iv
Declaration of Conformity...................................................................... iv
RoHS Compliance ................................................................................... v
Warranty and RMA ................................................................................ vi
Safety Information ................................................................................viii
Installation Recommendations...............................................................viii
Safety Precautions.................................................................................. ix
Technical Support and Assistance............................................................ x
Conventions Used in this Manual............................................................ x
Global Service Contact Information........................................................ xi
Package Contents.................................................................................xiii
Ordering Information ............................................................................xiv
Chapter 1: Product Introduction
Overview ................................................................................................1
Key Features ...........................................................................................1
Hardware Specifications..........................................................................2
Knowing Your EBC 355 ..........................................................................4
Top View .............................................................................................4
Bottom View .......................................................................................5
Chapter 2: Jumpers and Connectors
Before You Begin ....................................................................................6
Precautions ............................................................................................6
Jumper Settings ......................................................................................7
Locations of the Jumpers and Connectors...............................................8
Top View .............................................................................................8
Bottom View .......................................................................................9
Jumpers................................................................................................10
AT/ATX Power Type Select..................................................................10
LCD Power Select ..............................................................................10
PWM/CCFL Select .............................................................................11
Connector Pin Definitions .....................................................................12
External I/O Interfaces........................................................................12
VGA...............................................................................................12
HDMI.............................................................................................12
USB 3.0 Connector B .....................................................................13
USB 3.0 Connector A.....................................................................13
LAN1 Port ......................................................................................14
LAN2 Port ......................................................................................14
Internal Connectors...........................................................................15
ATX Power Output Connector........................................................15
Power Button (ATX)........................................................................15
RTC Clear Select.............................................................................16
System Reset..................................................................................16

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. iii EBC 355 User Manual
Content
SMBus ..........................................................................................17
PS/2 Keyboard/Mouse Connector...................................................17
System Fan Connector ...................................................................18
GPIO Connector.............................................................................18
COM Port 1 (RS232).......................................................................19
COM Port 2 (RS232/RS422/RS485).................................................19
COM Port 3 (RS232).......................................................................20
COM Port 4 (RS232).......................................................................20
Mic-in Connector...........................................................................21
Line-out Connector........................................................................21
Speaker-out Connector ..................................................................22
LVDS Connector A .........................................................................22
LVDS Connector B..........................................................................23
LVDS Panel Inverter Connector .......................................................23
Mini-PCIe Slot (Wi-Fi) .....................................................................24
Mini-PCIe Slot (3G).........................................................................25
SIM Card Connector ......................................................................26
SATA Connector A .........................................................................26
SATA DOM Connector ...................................................................27
SATA Power Connector..................................................................27
SATA DOM Power Connector.........................................................28
Power/HDD LED Connector............................................................28
Block Diagram .................................................................................29
Chapter 3: BIOS Setup
About BIOS Setup.................................................................................30
When to Configure the BIOS.................................................................30
Default Configuration...........................................................................31
Entering Setup......................................................................................31
Legends................................................................................................31
BIOS Setup Utility..................................................................................33
Main .................................................................................................33
Advanced .........................................................................................33
Chipset..............................................................................................41
Security .............................................................................................44
Boot..................................................................................................45
Save & Exit ........................................................................................46
Appendix A: Watchdog Timer Setting...................47
Appendix B: GPI/O Programming Guide................48

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. iv EBC 355 User Manual
Preface
Preface
Copyright
This publication, including all photographs, illustrations and software, is
protected under international copyright laws, with all rights reserved. No
part of this manual may be reproduced, copied, translated or transmitted in
any form or by any means without the prior written consent from NEXCOM
International Co., Ltd.
Disclaimer
The information in this document is subject to change without prior notice and
does not represent commitment from NEXCOM International Co., Ltd. However,
users may update their knowledge of any product in use by constantly checking
its manual posted on our website: http://www.nexcom.com. NEXCOM shall
not be liable for direct, indirect, special, incidental, or consequential damages
arising out of the use of any product, nor for any infringements upon the rights
of third parties, which may result from such use. Any implied warranties of
merchantability or fitness for any particular purpose is also disclaimed.
Acknowledgements
EBC 355 is a trademark of NEXCOM International Co., Ltd. All other product
names mentioned herein are registered trademarks of their respective
owners.
Regulatory Compliance Statements
This section provides the FCC compliance statement for Class B devices and
describes how to keep the system CE compliant.
Declaration of Conformity
FCC
This equipment has been tested and verified to comply with the limits for
a Class B digital device, pursuant to Part 15 of FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference
to radio communications. Operation of this equipment in a residential area
(domestic environment) is likely to cause harmful interference, in which
case the user will be required to correct the interference (take adequate
measures) at their own expense.
CE
The product(s) described in this manual complies with all applicable
European Union (CE) directives if it has a CE marking. For computer systems
to remain CE compliant, only CE-compliant parts may be used. Maintaining
CE compliance also requires proper cable and cabling techniques.

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. vEBC 355 User Manual
Preface
RoHS Compliance
NEXCOM RoHS Environmental Policy and Status
Update
NEXCOM is a global citizen for building the digital
infrastructure. We are committed to providing green
products and services, which are compliant with
European Union RoHS (Restriction on Use of Hazardous Substance in
Electronic Equipment) directive 2011/65/EU, to be your trusted green
partner and to protect our environment.
RoHS restricts the use of Lead (Pb) < 0.1% or 1,000ppm, Mercury (Hg)
< 0.1% or 1,000ppm, Cadmium (Cd) < 0.01% or 100ppm, Hexavalent
Chromium (Cr6+) < 0.1% or 1,000ppm, Polybrominated biphenyls (PBB) <
0.1% or 1,000ppm, and Polybrominated diphenyl Ethers (PBDE) < 0.1% or
1,000ppm.
In order to meet the RoHS compliant directives, NEXCOM has established an
engineering and manufacturing task force in to implement the introduction
of green products. The task force will ensure that we follow the standard
NEXCOM development procedure and that all the new RoHS components
and new manufacturing processes maintain the highest industry quality
levels for which NEXCOM are renowned.
The model selection criteria will be based on market demand. Vendors and
suppliers will ensure that all designed components will be RoHS compliant.
How to recognize NEXCOM RoHS Products?
For existing products where there are non-RoHS and RoHS versions, the
suffix “(LF)” will be added to the compliant product name.
All new product models launched after January 2013 will be RoHS compliant.
They will use the usual NEXCOM naming convention.

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. vi EBC 355 User Manual
Preface
Warranty and RMA
NEXCOM Warranty Period
NEXCOM manufactures products that are new or equivalent to new in
accordance with industry standard. NEXCOM warrants that products will
be free from defect in material and workmanship for 2 years, beginning on
the date of invoice by NEXCOM. HCP series products (Blade Server) which
are manufactured by NEXCOM are covered by a three year warranty period.
NEXCOM Return Merchandise Authorization (RMA)
▪Customers shall enclose the “NEXCOM RMA Service Form” with the
returned packages.
▪Customers must collect all the information about the problems
encountered and note anything abnormal or, print out any on-screen
messages, and describe the problems on the “NEXCOM RMA Service
Form” for the RMA number apply process.
▪Customers can send back the faulty products with or without accessories
(manuals, cable, etc.) and any components from the card, such as CPU
and RAM. If the components were suspected as part of the problems,
please note clearly which components are included. Otherwise, NEXCOM
is not responsible for the devices/parts.
▪Customers are responsible for the safe packaging of defective products,
making sure it is durable enough to be resistant against further damage
and deterioration during transportation. In case of damages occurred
during transportation, the repair is treated as “Out of Warranty.”
▪Any products returned by NEXCOM to other locations besides the
customers’ site will bear an extra charge and will be billed to the customer.
Repair Service Charges for Out-of-Warranty Products
NEXCOM will charge for out-of-warranty products in two categories, one is
basic diagnostic fee and another is component (product) fee.
Repair Service Charges for Out-of-Warranty Products
NEXCOM will charge for out-of-warranty products in two categories, one is
basic diagnostic fee and another is component (product) fee.
System Level
▪Component fee: NEXCOM will only charge for main components such as
SMD chip, BGA chip, etc. Passive components will be repaired for free,
ex: resistor, capacitor.
▪Items will be replaced with NEXCOM products if the original one cannot
be repaired. Ex: motherboard, power supply, etc.
▪Replace with 3rd party products if needed.
▪If RMA goods can not be repaired, NEXCOM will return it to the customer
without any charge.
Board Level
▪Component fee: NEXCOM will only charge for main components, such
as SMD chip, BGA chip, etc. Passive components will be repaired for free,
ex: resistors, capacitors.
▪If RMA goods can not be repaired, NEXCOM will return it to the customer
without any charge.

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. vii EBC 355 User Manual
Preface
Warnings
Read and adhere to all warnings, cautions, and notices in this guide and
the documentation supplied with the chassis, power supply, and accessory
modules. If the instructions for the chassis and power supply are inconsistent
with these instructions or the instructions for accessory modules, contact
the supplier to find out how you can ensure that your computer meets
safety and regulatory requirements.
Cautions
Electrostatic discharge (ESD) can damage system components. Do the
described procedures only at an ESD workstation. If no such station is
available, you can provide some ESD protection by wearing an antistatic
wrist strap and attaching it to a metal part of the computer chassis.

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. viii EBC 355 User Manual
Preface
Installation Recommendations
Ensure you have a stable, clean working environment. Dust and dirt can get
into components and cause a malfunction. Use containers to keep small
components separated.
Adequate lighting and proper tools can prevent you from accidentally
damaging the internal components. Most of the procedures that follow
require only a few simple tools, including the following:
▪A Philips screwdriver
▪A flat-tipped screwdriver
▪A grounding strap
▪An anti-static pad
Using your fingers can disconnect most of the connections. It is recommended
that you do not use needle-nose pliers to disconnect connections as these
can damage the soft metal or plastic parts of the connectors.
Safety Information
Before installing and using the device, note the following precautions:
▪Read all instructions carefully.
▪Do not place the unit on an unstable surface, cart, or stand.
▪Follow all warnings and cautions in this manual.
▪When replacing parts, ensure that your service technician uses parts
specified by the manufacturer.
▪Avoid using the system near water, in direct sunlight, or near a heating
device.
▪The load of the system unit does not solely rely for support from the
rackmounts located on the sides. Firm support from the bottom is highly
necessary in order to provide balance stability.
▪The computer is provided with a battery-powered real-time clock circuit.
There is a danger of explosion if battery is incorrectly replaced. Replace
only with the same or equivalent type recommended by the manufacturer.
Discard used batteries according to the manufacturer’s instructions.

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. ix EBC 355 User Manual
Preface
Safety Precautions
1. Read these safety instructions carefully.
2. Keep this User Manual for later reference.
3. Disconnect the equipment from any AC outlet before cleaning or installing
a component inside the chassis. Use a damp cloth. Do not use liquid or
spray detergents for cleaning.
4. To prevent electrostatic build-up, leave the board in its anti-static bag
until you are ready to install it.
5. For plug-in equipment, the power outlet socket must be located near the
equipment and must be easily accessible.
6. Keep the board away from humidity.
7. Put the board on a stable surface. Dropping it or letting it fall may cause
damage.
8. Wear anti-static wrist strap.
9. Do all preparation work on a static-free surface.
10. Make sure the voltage of the power source is correct before
connecting the equipment to the power outlet.
11. Hold the board only by its edges. Be careful not to touch any of the
components, contacts or connections.
12. All cautions and warnings on the board should be noted.
13. Use the correct mounting screws and do not over tighten the screws.
14. Keep the original packaging and the anti-static bag; in case the board
has to be returned for repair or replacement.

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. xEBC 355 User Manual
Preface
Technical Support and Assistance
1. For the most updated information of NEXCOM products, visit NEXCOM’s
website at www.nexcom.com.
2. For technical issues that require contacting our technical support team or
sales representative, please have the following information ready before
calling:
– Product name and serial number
– Detailed information of the peripheral devices
– Detailed information of the installed software (operating system,
version, application software, etc.)
– A complete description of the problem
– The exact wordings of the error messages
Warning!
1. Handling the unit: carry the unit with both hands and handle it with care.
2. Maintenance: to keep the unit clean, use only approved cleaning products
or clean with a dry cloth.
3. CompactFlash: Turn off the unit’s power before inserting or removing a
CompactFlash storage card.
Conventions Used in this Manual
Warning:
Information about certain situations, which if not observed,
can cause personal injury. This will prevent injury to yourself
when performing a task.
CAUTION!
CAUTION!CAUTION! Caution:
Information to avoid damaging components or losing data.
Note:
Provides additional information to complete a task easily.

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. xi EBC 355 User Manual
Preface
Global Service Contact Information
Headquarters
NEXCOM International Co., Ltd.
15F, No. 920, Chung-Cheng Rd.,
ZhongHe District, New Taipei City, 23586,
Taiwan, R.O.C.
Tel: [phone]
Fax: [phone]
www.nexcom.com
America
USA
NEXCOM USA
2883 Bayview Drive,
Fremont CA 94538, USA
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.nexcom.com
Asia
Taiwan
NEXCOM Intelligent Systems
Taipei Office
13F, No.920, Chung-Cheng Rd.,
ZhongHe District,
New Taipei City, 23586, Taiwan, R.O.C.
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.nexcom.com.tw
NEXCOM Intelligent Systems
Taichung Office
16F, No.250, Sec. 2, Chongde Rd.,
Beitun Dist.,
Taichung City 406, R.O.C.
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.nexcom.com.tw
Japan
NEXCOM Japan
9F, Tamachi Hara Bldg.,
4-11-5, Shiba Minato-ku,
Tokyo, 108-0014, Japan
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.nexcom-jp.com
China
NEXCOM China
1F & 2F, Block A, No. 16 Yonyou Software Park,
No. 68 Beiqing Road, Haidian District,
Beijing, 100094, China
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.nexcom.cn

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. xii EBC 355 User Manual
Preface
Wuhan Office
1-C1804/1805, Mingze Liwan, No. 519
South Luoshi Rd., Hongshan District,
Wuhan, 430070, China
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.nexcom.cn
Europe
United Kingdom
NEXCOM EUROPE
10 Vincent Avenue,
Crownhill Business Centre,
Milton Keynes, Buckinghamshire
MK8 0AB, United Kingdom
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.nexcom.eu
Italy
NEXCOM ITALIA S.r.l
Via Lanino 42,
21047 Saronno (VA), Italia
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.nexcomitalia.it
Chengdu Office
9F, Shuxiangxie, Xuefu Garden,
No.12 Section 1, South Yihuan Rd.,
Chengdu, 610061, China
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.nexcom.cn
Shanghai Office
Room 603/604, Huiyinmingzun Plaza Bldg., 1,
No.609, Yunlin East Rd.,
Shanghai, 200333, China
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.nexcom.cn
Shenzhen Office
Room1707, North Block, Pines Bldg.,
No.7 Tairan Rd., Futian Area,
Shenzhen, 518040, China
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.nexcom.cn

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. xiii EBC 355 User Manual
Preface
Package Contents
Before continuing, verify that the EBC 355 package that you received is complete. Your package should have all the items listed in the following table.
EBC 355-E3845 (PN: 10E00035502X0) / EBC 355-E3826 (PN: 10E00035500X0)
Item Part Number Name Description Qty
1 20E00035502X0 ASSY EBC 355-E3845 1
2 60177A0359X00 (N)EBC 355 Quick Reference Guide VER:A SIZE:A4 KRAMER 1
3 602DCD0845X00 (N)EBC 355 CD DRIVER VER:1.0 JCL 1
EBC 355 Cable Kit Optional (PN: 10E00035501X0)
Item Part Number Name Description Qty
1 60233ATA73X00 SATA Cable ACMELUX:19922413 Standard L:300mm 1
2 60233PS223X00 EBC563IO PS2 KB/MS Cable ACMELUX:19922439 PS2 to JST 8PIN 2.54mm L:200mm+-10mm 1
3 60233PW148X00 SATA Power Cable BEST:901-0405-300R Housing 4P to Housing 5P L:300mm 1
4 60233SIO62X00 COM Port Cable CP:NEX-110819-01 UL2651#28x9C-DB9+TU1001-10 L:200mm 2
EBC 355 Heatsink Kit Optional (PN: 10E00035504X0)
Item Part Number Name Description Qty
1 5044440079X00 Gasket for VIA CPU KGS:C-4505(20X20x1)+G4000 20x20x1.1mm 1
2 5044440090X00 (H)Thermal Pad APUS:3A2015001001500 15x10x1.5mm XR-PE 1
3 5050300683X00 (N)EBC 355 Heatsink VER:A THERMO TOUCH 74.3x98x21.4mm AL:6063 1

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. xiv EBC 355 User Manual
Preface
Ordering Information
The following below provides ordering information for EBC 355.
EBC 355-E3826 (P/N: 10E00035500X0) RoHS Compliant
Low power embedded board with Intel®Atom™ processor E3826 and based
on Intel®integrated graphics engine w/ HDMI/24/48bit LVDS/4x USB3.0/4x
COMs/2x Mini-PCIe/2x Gigabit LAN/2x SATA
EBC 355-E3845 (P/N: 10E000355001X0) RoHS Compliant
Low power embedded board with Intel®Atom™ processor E3845 and based
on Intel®integrated graphics engine w/ HDMI/24/48bit LVDS/4x USB3.0/4x
COMs/2x Mini-PCIe/2x Gigabit LAN/2x SATA

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. 1EBC 355 User Manual
Chapter 1: Product Introduction
Chapter 1: Product Introduction
Key Features
▪On-board Intel®Atom™ Processor E3800 Product Family
▪One 204-pin SO-DIMM socket supports up to 8GB DDR3L 1066/1333
MHz SDRAM
▪Display: HDMI/VGA/1x LVDS (2x DF13 20-pin 24/48-bit Single channel)
▪2x Mini-PCIe
▪2x Intel®i210 PCI Express Gigabit Ethernet
▪2x SATA2.0
▪4x USB3.0, 4-in/4-out GPIO, Mic-in , Speak out
▪Serial port: 3x RS232, 1x RS232/422/485 port
▪Support AT/ATX mode and single +12VDC input
Overview

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. 2EBC 355 User Manual
Chapter 1: Product Introduction
Hardware Specifications
CPU Support
▪Support Intel®Atom™ processor E3800 product family
Main Memory
▪Single 204-pin SO-DIMM socket supports up to 8 GB DDR3L 1066/1333
MHz SDRAM
Platform Control Hub
▪Atom™ processor E3800 product family (formerly codenamed “Bay
Trail-I”)
BIOS
▪AMI System BIOS
▪Plug and play support
▪Advanced Power Management and Advanced Configuration & Power
Interface support
On-board LAN
▪2x Intel®PCI Express Gigabit Ethernet
▪Support Boot From LAN (PXE)
▪2x RJ45 with LED
Display
▪Integrated Intel®Gen.7 Graphics Engine
▪Analog VGA interface
▪Analog VGA interface: 1x DB-15 connector, resolution up to 1920 x 1200
@75Hz
▪HDMI interface: 1x HDMI connector, resolution up to 1920 x 1200
▪LVDS interface: 1x dual (24/48-bit) LVDS panel, resolution up to 1920 x
1200 DF13 20-pin LVDS connector for internal connection
Audio
▪Realtek ALC886 CODEC for High Definition:
1x 4 2.0 pitch pin-header for Mic-in
1x 4 2.0 pitch pin-header for Line-out
1x 5 2.0 pitch pin-header for speaker out
On-board LAN
▪2x Intel®i210 Gigabit Ethernet
▪Support PXE boot from LAN, wake on LAN function
Expansion
▪2x Mini-PCIe
I/O Interface
▪Serial port: 4 ports
COM1, 3, 4 support RS232 with 10-pin box header
COM2 support RS232/422/485 with 10-pin box header
▪USB 3.0: 4 ports
4x ports edge connector
▪8 GPIO lines via header (GPI 0~3 and GPO0~3) TTL level (0/5V)
▪On-board power LED and HDD active LED pin header
▪1x 4-pin fan connector (for CPU)
▪1x keyboard/mouse pin header
▪Onboard buzzer/SMBus2.0/reset SW/on & off switch button

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. 3EBC 355 User Manual
Chapter 1: Product Introduction
Edge I/O Interface
▪1x VGA connector
▪1x HDMI connector
▪2x dual stack USB 3.0 connector
▪2x RJ45 with LED connector
Watchdog Timer
▪Watchdog time-out can be programmed by software from 1 second to
255 seconds, and from 1 minute to 255 minutes (tolerance 15% under
room temperature 25°C)
Storage
▪2x SATA2.0 ports
System Monitor
▪Monitoring of 4 voltages and 2 temperatures
▪4 voltage (Vcore, +12V, +3.3V, 5V)
▪2 temperatures (CPU, system)
▪1 fan speed detection
On-board RTC
▪On-chip RTC with battery backup
▪1x external Li-ion battery
Power Requirements
▪Power requirement: +12V DC Input
▪One 4-pin power connector
Dimensions
▪146mm (L) x 102mm (W) 5.7” x 4.0”
Environment
▪Board level operating temperatures: -20°C to 60°C
▪Storage temperatures: -25°C to 85°C
▪Relative humidity:
10% to 90% (operating, non-condensing)
5% to 95% (non-operating, non-condensing)
Certifications
▪Meet CE
▪FCC Class A

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. 4EBC 355 User Manual
Chapter 1: Product Introduction
Knowing Your EBC 355
Top View
System FAN
PWM/CCFL
Select
SATA
SATA
DOM
SATA Power
LVDS A
LVDS Panel Inverter
LVDS B
SATA DOM
Power
JP2: SMBus
JP3: LCD Power Select
Power/HDD LED
PS/2 K/B Mouse
AT/ATX Select
COM2
GPIO
COM3
J6: COM1, J7: COM4
Speaker-out
Mic-in
Line-out
LAN2LAN1USB 2/3 USB 0/1HDMI
VGA
+12V DC Input
Reset
Power

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. 5EBC 355 User Manual
Chapter 1: Product Introduction
SO-DIMM
Bottom View
Mini-PCIe SIM

Copyright © 2014 NEXCOM International Co., Ltd. All Rights Reserved. 6EBC 355 User Manual
Chapter 2: Jumpers and Connectors
Chapter 2: Jumpers and Connectors
This chapter describes how to set the jumpers and connectors on the
EBC 355 motherboard.
Before You Begin
▪Ensure you have a stable, clean working environment. Dust and dirt can
get into components and cause a malfunction. Use containers to keep
small components separated.
▪Adequate lighting and proper tools can prevent you from accidentally
damaging the internal components. Most of the procedures that follow
require only a few simple tools, including the following:
– A Philips screwdriver
– A flat-tipped screwdriver
– A set of jewelers screwdrivers
– A grounding strap
– An anti-static pad
▪Using your fingers can disconnect most of the connections. It is
recommended that you do not use needle-nosed pliers to disconnect
connections as these can damage the soft metal or plastic parts of the
connectors.
▪Before working on internal components, make sure that the power is off.
Ground yourself before touching any internal components, by touching
a metal object. Static electricity can damage many of the electronic
components. Humid environments tend to have less static electricity than
dry environments. A grounding strap is warranted whenever danger of
static electricity exists.
Precautions
Computer components and electronic circuit boards can be damaged by
discharges of static electricity. Working on computers that are still connected
to a power supply can be extremely dangerous.
Follow the guidelines below to avoid damage to your computer or yourself:
▪Always disconnect the unit from the power outlet whenever you are
working inside the case.
▪If possible, wear a grounded wrist strap when you are working inside the
computer case. Alternatively, discharge any static electricity by touching
the bare metal chassis of the unit case, or the bare metal body of any
other grounded appliance.
▪Hold electronic circuit boards by the edges only. Do not touch the
components on the board unless it is necessary to do so. Don’t flex or
stress the circuit board.
▪Leave all components inside the static-proof packaging that they shipped
with until they are ready for installation.
▪Use correct screws and do not over tighten screws.