Samsung SMT-R2000 User manual

Ed.
00
SMT-R2000
UsersManual

COPYRIGHT
This manual is proprietary to SAMSUNGElectronics Co., Ltd. and is protected by copyright.
No information contained herein may be copied, translated, transcribed or duplicated for any commercial
purposes or disclosed to the third partyin any form without the prior written consent of SAMSUNGElectronics
Co., Ltd.
TRADEMARKS
Product names mentioned in thismanual may be trademarks and/or registered trademarks of their respective
companies.
This manual should be read and used as a guideline for properly installing and operating the product.
This manual may be changedfor the system improvement, standardization and other technical reasons without prior
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Homepage: http://www.samsungdocs.com
©2005SAMSUNG Electronics Co., Ltd. All rights reserved.

SMT-R2000 Service Manual
© SAMSUNG Electronics Co., Ltd. I
INTRODUCTION
Purpose
This manualintroduces Access Point(AP)/Repeater SMT-R2000, and describes how to
assemble/disassemble SMT-R2000 and troubleshoot when any failue occurs. In addition,
this document describes its hardware configuration and circuits and provides the parts list
for SMT-2000.
Document Content and Organization
This manualconsists of five Chapters and two Appendices.
CHAPTER 1. introduction of SMT-R2000
Introduces SMT-R2000 and describes the configuration and specifications of SMT-R2000.
CHAPTER 2. Assembly and Disassemblydescribes;
How to assemble/disassemble SMT-R2000.
CHAPTER 3. Troubleshooting describes;
How to troubleshoot when any failure occurs while operating SMT-R2000.

INTRODUCTION
II © SAMSUNG Electronics Co., Ltd.
Conventions
The following types of paragraphs contain special information that must be carefully read
and thoroughly understood. Such information may or may not be enclosed in a rectangular
box, separating it from the main text, but is always preceded by an icon and/or a bold title.
WARNING
Provides information or instructions that the reader should follow in order to avoid
personal injury or fatality.
CAUTION
Provides information or instructions that the reader should follow in order to avoid
a service failure or damage to the system.
CHECKPOINT
Provides the operator with checkpoints for stable system operation.
NOTE
Indicates additional information as a reference.
Revision History
EDITION DATE OF ISSUE REMARKS
00 12. 2005. Original Draft

SMT-R2000 Service Manual
© SAMSUNG Electronics Co., Ltd. III
FCC CONCERNS
FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation.
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. However, there is
no guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-Reorient or relocate the receiving antenna.
-Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet onacircuit different from that to which the receiver
is connected.
-Consult the dealer or an experienced radio/TV technician for help.
RF Exposure Statement:
The antenna(s) used for this device must be installed to provide a separation distance of at
least 20 cm from all persons and must not be co-located or operating in conjunction with
any other antenna or transmitter.
RF Exposure Statement:
This device is restricted to indoor use only within the 5.15-5.25 GHz band to reduce any
potential for harmful interference to co-channel MSS operations.
Do not
Any changes or modifications to the equipment not expressly approved by the
party responsible for compliance could void user’s authority to operate the
equipment.

SMT-R2000 Service Manual
© SAMSUNG Electronics Co., Ltd. IV
SAFETY CONCERNS
For product safety and correct operation, the following information must be given to the
operator/user and shall be read before the installation and operation.
Symbols
Caution
Indication of a general caution
Restriction
Indication for prohibiting an action for a product
Instruction
Indication for commanding a specifically required action

SMT-R2000 Service Manual
© SAMSUNG Electronics Co., Ltd. V
Caution
When Removes Shield Can
When removes Shielded Can, be careful of the damage of RF terminal parts
caused by heat.
CAUTION

SMT-R2000 Service Manual
© SAMSUNG Electronics Co., Ltd. VI
TABLE OF CONTENTS
INTRODUCTION I
Purpose.........................................................................................................................................................I
DocumentContentand Organization.........................................................................................................I
Conventions.................................................................................................................................................II
RevisionHistory...........................................................................................................................................II
FCC/SAFETY CONCERNS IV
Symbols ......................................................................................................................................................IV
Caution.........................................................................................................................................................V
CHAPTER 1. Introduction of SMT-R2000 1-1
1.1 SMT-R2000 Overview..........................................................................................................................1-1
1.2 SMT-R2000 Configuration .................................................................................................................1-2
1.2.1 FrontPanel ofSMT-R2000.......................................................................................................1-2
1.2.2 Rear Panel of SMT-R2000.......................................................................................................1-3
1.3 Hardware Specification......................................................................................................................1-4
CHAPTER 2. Assembly and Disassembly 2-1
2.1 Configuration of SMT-2100C Main Board......................................................................................2-1
2.2 Disassembling......................................................................................................................................2-2
2.3 Assembling ...........................................................................................................................................2-5
CHAPTER 3. Troubleshooting 3-1
3.1 LED Failure............................................................................................................................................3-2
3.2 Power Failure........................................................................................................................................3-3
3.3 Wireless Failure -5GHz......................................................................................................................3-4
3.4 Wireless Failure -2.4 GHz ..................................................................................................................3-5
3.5 Network Connection Failure.............................................................................................................3-6

SMT-R2000 Service Manual
© SAMSUNG Electronics Co., Ltd. VII
LIST OF FIGURES
Figure 1.1 Front Panel of SMT-R2000..............................................................................................1-2
Figure 1.2 Rear Panel of SMT-R2000...............................................................................................1-3
Figure 2.1 Configuration of SMT-R2000 Main Board.....................................................................2-1
Figure 2.2 Separating the Stand........................................................................................................2-2
Figure 2.3 Removing Case Screws...................................................................................................2-2
Figure 2.4 Separating the Case.........................................................................................................2-3
Figure 2.5 Removing Screws .............................................................................................................2-3
Figure 2.6 Separating the Main Board and Bottom Case..............................................................2-3
Figure 2.7 Separating the Shield Can...............................................................................................2-4
Figure 2.8 Separating the Antenna....................................................................................................2-4
Figure 2.9 SMT-R2000 Disassembly Diagram ................................................................................2-5
LIST OF TABLES
Table 1.1 LEDs of SMT-R2000...........................................................................................................1-2
Table 1.2 Ports of SMT-R2000...........................................................................................................1-3
Table 1.3 SMT-R2000 Hardware Specification................................................................................1-4
Table 2.1 Main Board Parts.................................................................................................................2-1

TABLEOF CONTENTS
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SMT-R2000 Service Manual
© SAMSUNG Electronics Co., Ltd. 1-1
CHAPTER 1. Introduction of SMT-
R2000
This chapter introduces SMT-R2000 and describes the configuration and specifications of
SMT-R2000.
1.1 SMT-R2000 Overview
SMT-R2000 is a wireless LAN Access Point(AP) that is available in the construction of
a wireless network and can be used as a wireless LAN repeater.
As a wireless LAN repeater, SMT-R2000 is installed within the cell area of AP or the repeater,
and re-transmits the data of wireless terminals, such as wireless notebook and wireless PDA,
in the outside of the cell area of neighboring AP to AP.
ŸAP: The AP for wireless LAN is an access device for wireless network connection and
performs the relay function among wireless terminals and wired LAN. In general, the
AP has a specified use area and a specific frequency.
ŸRepeater: If AP signal for wireless LAN is transferred over a specified distance, the
output signal will be attenuated. Therefore, a device that creates new wave or raises
output voltage is required to enlarge the transfer distance. To do so, the wireless LAN
repeater is used as a device to restore and relay the transfer signals.

CHAPTER 1. Introductionof SMT-R2000
1-2© SAMSUNG Electronics Co., Ltd.
1.2 SMT-R2000 Configuration
This section describes the configuration of SMT-R2000.
1.2.1 Front Panel of SMT-R2000
The front panel of SMT-R2000 is as shown in the figure below:
Figure 1.1 Front Panel of SMT-R2000
The following table describes each LED of the front panel:
Table 1.1 LEDs of SMT-R2000
LED Function Blue LED turns on
Blue LED turns off
Blue LED blinks
WAN WAN operation
status WAN is in normal operation WAN fails to operate Data is being transmitted/received
through WAN
LAN LAN operation
status LAN is in normal operation LAN fails to operate
Data is being
transmitted/received
through LAN
2.4 GHz
2.4 GHz operation
status 2.4 GHz Wireless LAN is in operation
2.4 GHz Wireless
LAN fail to operate Data is being transmitted/received
through 2.4 GHz
Wireless LAN
5GHz 5GHz operation
status 5GHz Wireless LAN is in operation
5GHz Wireless
LAN fail to operate Data is being transmitted/received
through 5 GHz
Wireless LAN
PWR Powersupply
status Power supply is normal Powersupplyfails -

SMT-R2000 Service Manual
© SAMSUNG Electronics Co., Ltd. 1-3
1.2.2 Rear Panel of SMT-R2000
The rear panel of SMT-R2000 is as shown in the figure below:
Figure 1.2 Rear Panel of SMT-R2000
The following table describes each port of the rear panel:
Table 1.2 Ports of SMT-R2000
Port Function
DC IN 5 VPort for connecting to local power supply adaptor(5 V, 2 A)
RESET External RESET input port of the system
WAN LAN port for connecting to WAN(RJ-45)
LAN LAN port for connecting to LAN(RJ-45)
SIO Used for connecting to PC to check the operational status of SMT-R2000
LAN SIODC5V RESET WAN

CHAPTER 1. Introductionof SMT-R2000
1-4© SAMSUNG Electronics Co., Ltd.
1.3Hardware Specification
The SMT-R2000 hardware specification is as follows:
Table 1.3 SMT-R2000 Hardware Specification
Category
Sub-Category
Item Specification
WirelessAccess CSMA/CA
Frequency 5.15~5.825 Ghz
Transmission
Method OFDM
14 dBm(25mW) or more in54 Mbpsmode
15 dBm(30mW) or more in 48 Mbpsmode
16 dBm(50mW) or more in36 Mbpsmode
Transmission
Output
17 dBm or more in other modes
Bandwidth 20 Mhz or less
-20 dBr or less at Fc+/-11 Mhz
-28 dBr or less at Fc+/-20 Mhz
Spectrum Mask
-40 dBr or less at Fc+/-30 Mhz
-65 dBm or less in54 Mbps modeReceive Sensitivity
-82 dBm or less in6Mbps mode
-1dB or more in54 Mbps mode
IEEE 802.11a
Adjacent Channel
Rejection 16 dB or more in6Mbps mode
WirelessAccess CSMA/CA
Frequency 2.4~2.4835 Ghz
Transmission
Method OFDM
14 dBm(25mW) or more in54 Mbpsmode
15 dBm(30mW) or more in48 Mbpsmode
16 dBm(50mW) or more in36 Mbpsmode
Transmission
Output
17 dBm or more in other modes
Bandwidth 20 Mhz or less
-20 dBr or less at Fc+/-11 Mhz
-28 dBr or less at Fc+/-20 Mhz
Spectrum Mask
-40 dBr or less at Fc+/-30 Mhz
-65 dBm or less in54 Mbps modeReceive Sensitivity
-82 dBm or less in 6Mbps mode
-1dB or more in54 Mbps mode
WLAN
IEEE 802.11g
Adjacent Channel
Rejection 16 dB or more in6Mbps mode

SMT-R2000 Service Manual
© SAMSUNG Electronics Co., Ltd. 1-5
Table 1.3 SMT-R2000 Hardware Specification (Continued)
Category Sub-Category
Item Specification
WirelessAccess CSMA/CA
Frequency 2.4~2.4835 Ghz
Transmission Method DSSS
Transmission Method 17 dBm or more
Bandwidth 26 Mhz or less
Spectrum Mask PrimarySidelobe: -30 bBr or less
WLAN IEEE 802.11b
Receive Sensitivity -76 dBm or less(11 Mbps)
Built-inANT 2dBiDipoleANTANTENNA -
Diversity Support-default
ETHERNET -Link Speed Ethernet 10/100 base-T
Adaptor Input: 100~240 VAC,50~60 Hz
Output: 5 V, 2 A
Power Supply -
POE Support-IEEE802.3af compliant
Dimension 115h x 60w x 35d(mm)Bottom Case -
Weight 148 g or less
Operational
Temperature 0~45℃Environment Temperature
Storage Temperature -20~70℃
Korea Authentication for
specification MIC
Europe Authentication for
specification CE
U.S.A. Authentication for
specification FCC
Authentication
Wi-Fi WLAN Compatibility test
802.11a/b/g Radio interoperability
& WPA1.0

CHAPTER 1. Introductionof SMT-R2000
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SMT-R2000 Service Manual
© SAMSUNG Electronics Co., Ltd. 2-1
CHAPTER 2. Assembly and
Disassembly
This chapter describes how to disassemble and assemble SMT-R2000.
2.1 Configuration of SMT-2100C Main Board
The configuration of the SMT-R2000 main board is as shown in the figure below:
Figure 2.1 Configuration of SMT-R2000 Main Board
Table 2.1 Main Board Parts
Item Description
WAN/LAN/SIO Ports for connecting to WAN/LAN/SIO
FLASH BOOT/Application image storage memory
Ethernet PHY PHY CHIP for connecting to Ethernet 10/100 based
SDRAM Application-operationmemory
CPU Main processor of SMT-R2000
RF Part(2.4/5 GHz) RF part for supporting 802.11a/b/g
Antenna Connector Connector for connecting to built-in antenna
WAN LAN SIO
FLASH
CPU
RF Part(2.4 Ghz)
SDRAM
Antenna
Connector
RF part(5 Ghz)
Ethernet PHY

CHAPTER 12. Assembly and Disassembly
2-2© SAMSUNG Electronics Co., Ltd.
2.2 Disassembling
This section describes how to disassemble SMT-R2000.
The main body of SMT-R2000 is disassembled according to the following order:
1) Separating the Stand from the Main Body
Separate the stand from the SMT-R2000 main body.
Push off the SMT-R2000 main body and the stand in opposite directions each other,
and then the stand is separated from the main body as shown in the figure below:
Figure 2.2 Separating the Stand
2) Separating the Case
Remove four screws from the bottom of the main body:
Figure 2.3 Removing Case Screws

SMT-R2000 Service Manual
© SAMSUNG Electronics Co., Ltd. 2-3
Hold on the ends of the case in the direction of the longer sides and pull out the case in
the opposite directions each other, to separate the case. The figure below shows an
example that the case is separated:
Figure 2.4 Separating the Case
3) Separating the Main Board and Bottom Case
Remove three screws fixing the main board and bottom case:
Figure 2.5 Removing Screws
Separate the antenna connector from the main board:
Figure 2.6 Separating the Main Board and Bottom Case

CHAPTER 12. Assembly and Disassembly
2-4© SAMSUNG Electronics Co., Ltd.
4) Separating the Shield Can
Separate the shield can covering the RF block:
Figure 2.7 Separating the Shield Can
Caution in Removing the Shield Can
Take care not to damage RF parts from heat when removing the shield can.
5) Separating the Antenna
Separate the antenna from the bottom case as shown in the figure below:
Figure 2.8 Separating the Antenna