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        Supermicro SuperChassis 823TQ-R500RCB, Black
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1.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            SC823 CHASSIS    USER S GUIDE    1 0      Je 35 3 E O  O DEE  i E a 2  AA O Sureenicas   Q      el  HO    t SY TC 36 x SUPERO  O COC JC JC JC Io O  SUPERO  HO  pex LC C AC EASY   O   SC823T SC823S   om EN SUPERO   SUPERO     a C   a     SSeS E       34 PUE O  NAT   a a i   qo qr pz qpo          ql O  SurrRMicRe   O  NE 
2.                                                                                                                                            DIO A ET te E       SUPERO      Ll HO SUPERC      a HO    O C00 30 3C 303 OA   abans O   2C OC 2C 2C J   no CC OC JC C Jego O Surermicae   g  SUPERO kUI HO Supero     RU HO   E ae  CC 2    303 CX 3C 30 E y UE  DI OT JE  C3 SUPERO    S         n     5 Irae re ee  L3 a a OS     O  Front Panel I O Device Definitions    for the SC823T SC823S Series   A  SCA Drive Trays 6  C  5 25  Drive Bay 1   B  Floppy Disk 1  D  CD ROM 1    Redundant Chassis  only   The SC823i Series  UN NH ME   lis  o     55     a I O  S urpRMICR   Q    tt SSS Em  O 2633      EA    O    LD  A  Cot IC                                           78   6 60    Front Panel I O Device Definitions    for the SC823i Series     A  IDE Drive Trays 2  C  5 25  Drive Bay 1     B  Floppy Disk 1  D  CD ROM  823i   R500RC only     2 2    Chapter 2  Chassis Description and Installation Instructions       LED Panel                V                89         Ws 5 ER ER OD    c cu fe  alt Ja   p El ELE                w                                                          LED and Button Definitions                   P          E  Power Button Il  LAN1  F  Reset Button J  LAN2  K  Overheat  o aia L  System Alert Power Failure    clivity     tor Redundant PS only     LED Button Descriptions     Gee  On   SystemOn          m  E Tor Stm or              C PET TR osi                 CANTE LANZ   
3.                                                                    C  C 2     JC 2  C          C 2     J C 2  C  C      2 C y  C 2          C  C J E IE  A  C                                        C  C X C D  C 2        C  C                                                                                                                                                                                                                                                       Back Panel Devices   P N  CSE PT21       A  Power Supply A1  Redundant Power Supply  B  Back Panel I O Ports  C  Low Profile Expansion Slots 7     SC823 Chassis Rear View   SC823T 823i RC Models                mm NNNENNENNENE                   i JO ARDT   e               ul JO GEN ESO  rs DO DA   Y        SS MIS 2                         Back Panel Devices   P N  CSE PT22   A  Power Supply A1  Redundant Power Supply  B  Back Panel I O Ports   C  Full Size Riser card Slots 3        2 4       Chapter 2  Chassis Description and Installation Instructions        1 O Back Panel   installed on the back panel See Page 2 4                         LL IL ILL  E      O                                                                                                                                  id L  p                                                   eee a A NS  olo  VGA  LAN 1    O                         Back Panel I O Port Definitions  D  Keyboard  amp  Mouse   E  USB Ports   F  COM Video Ports   G  LAN1   amp  LAN2    H
4.               portSATA Backplane CSESATASD  1                       sron    H                      Floppy Drive  omncm  1                        DukmenHadue  CEFF JO        C  SC823 Power Supply Specifications    Power supply spec__ 500W____  550W         OOO  5A Q30V    3 A 230V       Nominal DC output      o       Chapter 1  Safety Information and Technical Specifications       D  Serial ATA Back Panel   SC823T only     D 1 Jumper Settings and Pin Definitions    Default Settings  JP18 Buzzer Reset   Note Below        JP25 Overheat Temperature at 50  C  JP26 Common Act In and Act 0  5 In    D 2 Jumper Locations              r LEDS    LED4    LED5          SUPERO SC823 Chassis User s Guide       E  SCSI Back Panel   SC823S Only     E 1 Jumper Settings and Pin Definitions    Default Settings       JP18 Closed Buzzer Unable Disable   Open   Disable  Closed  Enable     E 2 Jumper Locations       4 pin PWR Connectors SCSI Connector             Lep        TERRE o CA 2   SCA5  SCAO LED3  SCA1 dl  LED5    Chapter 2  Chassis Description and Installation Instructions       Chapter 2  Chassis Description and Installation  Instructions    2 1 Chassis Description  A  Contents of the Accessory Kit     The following items are included in the Accessory Kit     M B Standoffs Screws for Drives  Qin  3 Pan head 6 32 x 5m    i 27    Quen Q Round head M2 x 3mm    E    1  F 7       Round head M3 x 5mm    Screws for M B    Pan head with lock 6 32 x 4 5 mm    Pan head M3 x 5mm    Screws for HDD  Fl
5.      2 10    Chapter 2  Chassis Description and Installation Instructions       F  Accessing the Redundant Power Supply   For the 8S3S   R550RC R500LP  823T R500RC  823i R500RC      Caution  Unplug the Power Cord before removing the Power  Supply      Procedures   1  Locate the release tab on the left side of the power supply     2  Push the release tab to the right to release the power supply from its locking  position as shown below                    3  Once the power supply module is released from its locking position  remove  it from the chassis     ZN Warning  Do not open the casing of a power supply     Power supplies can only be accessed and serviced by a  qualified technician from the manufacturer        SUPER   SC823 Chassis User s Guide       G  Installing the Motherboard    Be sure to disconnect the power supply before accessing or installing the  motherboard into the chassis  To install the motherboard to the chassis   first  you will need to install the correct type of standoffs at the proper  locations before installing the motherboard into the chassis   Refer to  Chapter 1 for Safety Guidelines      Procedures    1  Lay the chassis on a flat surface  Locate the mounting holes on the mother   board and locate the corresponding mounting holes on the chassis                                                              EJ  ii  l           h  D  Q e  Q       Z          2 On the chassis  install standoffs in the mounting holes that are corresponding  to the mounting
6.   Parallel Port      Note  The actual I O Configuration of your system might be different  from the one shown above      Power Module LED Descriptions   For Redundant Power Supply onl  Power Module LED   Color Condition  Green Power Supply DC On    Power Supply Standby  No AC Power to the system    2 5    SUPER   SC823 Chassis User s Guide       2 2 Chassis Installation    A  Important Safety Guidelines       This product shall only be accessed  assembled and serviced  by technically qualified personnel or technicians     To avoid personal injury and property damage  please read all the information  provided in Chapter 1  and carefully follow all the Safety Guidelines listed before  accessing or servicing the SC823 or its components  For your convenience  some  Safety Steps are also listed below     Safety Steps  Before accessing the chassis     1  Turn off all peripheral devices and turn off the power supply connected to the  SC823    2  Unplug all power cords from the system or the wall outlets    3  Disconnect all the cables and label the cables for easy identification    4  Use a grounded wrist strap designed to prevent static discharge when han   dling components     Removing the chassis covers    After completing the above steps  you can remove the chassis covers and install  components and devices into the chassis as described in this chapter    1  Press the tabs or the screws to loosen and remove the cover or the components  from the chassis    2  Save all the screws 
7.   generally sufficient to protect your equipment from ESD       Use a grounded wrist strap designed to prevent static discharge       Keep all components and printed circuit boards  PCBs  in their antistatic  bags until ready for use       Touch a grounded metal object before removing the board from the antistatic bag       Do not let components or PCBs come into contact with your clothing  which may  retain a charge even if you are wearing a wrist strap       Touch a grounded metal object before removing the board from the antistatic  bag       Handle a board by its edges only  do not touch its components  peripheral  chips  memory modules or contacts       When handling chips or modules  avoid touching their pins       Put the motherboard and peripherals back into their antistatic bags when not in  use       For grounding purposes  make sure your computer chassis provides excel   lent conductivity between the power supply  the case  the mounting  fasteners and the motherboard     1 4 Operation Safety Guidelines      Warning  For proper cooling  make sure to install all  AN chassis covers before turning on the system   f this rule is  not strictly followed  warranty may become void  Do not open  the casing of a power supply  Power supplies can only be  accessed and serviced by a qualified technician of the manufacturer                    1 6    Chapter 1  Safety Information and Technical Specifications       To avoid personal injury and property damage  please carefully  fol
8.  2    1 8    Chapter 1  Safety Information and Technical Specifications       1 6 Packing List and the SC823 Specifications    A  The SC823 Series chassis contains the following    O One  1  1 44  floppy drive   e One  1  slim CD ROM drive   For 823S R500LP  823S R500RC   823T R500RC  823i R500RC only       One  1  5 25  drive bay      One  1  I O shield    e SCSI Accessories   For SC823S onl  One  1  SCSI backplane  One  1  SCSI Ultra 320 Cable  Six  6  SCSI drive carriers        A    e SATA Accessories   For SC823T onl  One  1  SATA backplane  One  1  SATA Activity LED cable  Six  6  SATA drive carriers    O IDE Accessories     For SC823i onl  Two  2  IDE drive carriers  One  1  IDE cable    B  SC823 Specifications  For the SC823 IDE Models   823i 550LP 823i R500RC     Qty   Notes        for 823i  550LP    for 823i  R500RC  FPD PNSC 02 01    CDM TEAL 24 B  for 823i  R500RC       1 9    SUPERO SC823 Chassis User s Guide       For the SC823 SCSI Models   823S R500LP  R500RC  R550LP      SCA Drive Tray          cEPHATB je            78 cm Hot Swap Chassis Fan   Fan 0070_     4 dP                                port SCSI Backplane      CSESCA amp 2 PI    SCHCale oo      i                                    Floppy Drive     FPD PNSCONB   i                                            Rackmount Hardware   cerr   J            For the SC823 SATA Models   823T R550LP 823T R500RC     Component  PR JOY os              SATA Drive Tray  errr      6                             Fan 007 ee  
9.  SC823S 823T Series       2 8    Chapter 2  Chassis Description and Installation Instructions       D2  Accessing the IDE Drive Tray and Installing a Hard Disk    For the SC823i Series     To install the IDE drive into the chassis  first  you need to remove the top  cover  then  you need to remove the IDE drive tray from the chassis   Procedures    1  Remove the screws from the top of the IDE drive as shown below     2  Once the top cover and the screws are removed  press on the back side of the  IDE drive tray and push it out from the chassis        3  Remove the screws to loosen the drive tray  Once loosened  pull it out from its  housing  Then  mount a hard drive in the drive tray and secure it with screws as  shown below        IDE Drives  SC823i Series     2 9    SUPER   SC823 Chassis User s Guide       E  Accessing the Front Chassis Fans and Installing the Air  Shroud    Procedures  Accessing Chassis Fans          1  Press the release tab located on the left side of the front chassis fan  when  facing the front side of the fan  to release it from its locking position as shown in  the picture below    2  Once the front chassis fan is loosened  you can pull it out                             Procedures  Installing the Air Shroud       1  Locate the two holes in the chassis and two hooks in the air shroud as shown  in the picture below     2  Insert the two air shroud hooks into the two holes in the chassis     3  Gently push the air shroud into the chassis to secure it   
10.  eThe power cord plug cap must have an electrical current rating that is atleast  12596 of the electrical current rating of this product     eThe power cord plug cap that plugs into the AC receptacle on the power  supply must be an IEC 320  sheet C13  type female connector     eBe sure to disconnect the power supply before accessing the SC823 chassis  or its components     ePlug the Power cord s  into a socket that is properly grounded before  turning on the power     Warning  Follow the quidelines below to avoid possible  damages to the system or injury to yourself     General Electrical Safety Guidelines             e Be aware of the locations of the power switches on the chassis and in the  room  so you can disconnect the power supply if an accident occurs     e Take extra precautionary measures when working with high voltage  components  It is not recommended to work alone     e Before removing or installing main system components  be sure to  disconnect the power first  Turn off the system before you disconnect    the PS       Use only one hand when working with powered on electrical equipment to    avoid possible electrical shock     Chapter 1  Safety Information and Technical Specifications       9 Use rubber mats specifically designed as electrical insulators when working  with computer systems       The power supply or power cord must include a grounding plug and must  be plugged into grounded outlets     e Motherboard Battery  CAUTION  Make sure not to install the o
11.  holes on the motherboard     3  Lay the motherboard on the standoffs and secure it to the chassis with the  correct types of screws at proper locations     4  Secure the CPU s  and heatsink s  to the motherboard and the chassis as    needed  O O     For e please use Type For ep lease use Type       Warning  For proper coolin lease make sure that all the  chassis covers are installed before you operate the system  Out    of warranty damage can occur if this rule is not strictly followed                 2 12    Chapter 2  Chassis Description and Installation Instructions       H  Installing Chassis Rails    Please make sure that the chassis covers and chassis rails are installed on the  chassis before you install the chassis into the rack     To avoid personal injury and property damage  please carefully  follow all the safety steps listed below        Before installing the Chassis rails   1  Enclose the chassis with chassis covers     2  Unplug the AC power cord s    3  Remove all external devices and connectors     Procedures to Install Chassis Rails    1  Included in the shipping package are a pair of rail assemblies  In each rail  assembly  locate the inner rail and the outer rail     2  Press the locking tab to release the inner rail from its locking position and  pull out the inner rail from the rail assembly    The inner rails are to be attached  to the chassis and the outer rails are to be installed in the rack      Outer rail  to be installed in the  rack            P
12. A Se SUPERO     o EA  o       o O  M2 E eee         O      SC823i     SUPER   SC823 Chassis Users Guide       The information in this User   s Guide has been carefully reviewed and is believed to be  accurate  The vendor assumes no responsibility for any inaccuracies that may be  contained in this document  makes no commitment to update or to keep current the  information in this manual  or to notify any person or organization of the updates  Please  Note  For the most up to date version of this manual  please see our  web site at www supermicro com     SUPERMICRO COMPUTER reserves the right to make changes to the product described in  this manual at any time and without notice  This product  including software  if any  and  documentation may not  in whole or in part  be copied  photocopied  reproduced  translated  or reduced to any medium or machine without prior written consent     IN NO EVENT WILL SUPERMICRO COMPUTER BE LIABLE FOR DIRECT  INDIRECT   SPECIAL  INCIDENTAL  OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR  INABILITY TO USE THIS PRODUCT OR DOCUMENTATION  EVEN IF ADVISED OF THE  POSSIBILITY OF SUCH DAMAGES  IN PARTICULAR  THE VENDOR SHALL NOT HAVE  LIABILITY FOR ANY HARDWARE  SOFTWARE  OR DATA STORED OR USED WITH THE  PRODUCT  INCLUDING THE COSTS OF REPAIRING  REPLACING  INTEGRATING   INSTALLING OR RECOVERING SUCH HARDWARE  SOFTWARE  OR DATA     Any disputes arising between manufacturer and customer shall be governed by the laws of  Santa Clara County in the Sta
13. Green On  Linked                Blink   UANAdMiy         0f   Dsomeded      Overheat      Red  On   System Overheat         one  Seto oral             System Alen  Red  On   or more PWR modules failure    Power Failure    Of  System Noma              2 3    SUPER   SC823 Chassis User s Guide    C  Chassis Rear View and the Back Panel    SC823 Chassis Rear View   SC823T 823S 823i LP Models                             2  2   gt   2  2   gt                                                                                                                                                                                                                                                                                   C  C 2     JC D                    c 2  C 2 C Qo  C          C 2 C  gt   C    C             C  C 2 C      gt   C 2       C 2  E 2 C JC p                       C SMS 2 C 2  c                                                                                                                                           C 2  7      2 C IE  gt    C                                                                                                          5 3  J    O  C  C 2 C 2 C J       D  J  2  C 2  C J C 2 CC  C 2  J  2  2  2  2  2  2                                                                                                                                                                                                                                                               
14. and fasteners for later use   If necessary  label these screws  or fasteners for easy identification     3  Follow the instructions given in this chapter to remove the chassis covers     B  Tools needed    1  Phillips Screw Driver  2  Antistatic Strap    2 6    Chapter 2  Chassis Description and Installation Instructions       C  Removing the Top Cover of the SC823 Chassis    Before installing any components  replacing chassis fans or accessing the  motherboard  you will first need to remove the top cover     Procedures    1  Press the release tabs to release the cover from its locking position           2  Once the top cover is released from its locking position  push the cover toward  the rear side and slide it out from the chassis     2 1    SUPER   SC823 Chassis User s Guide       D1  Accessing the SCSI  or SATA  Drive Tray and Installing a  Hard Disk  For the SC823S 823T series     To install the SCA SATA  drive into the chassis  you need to first remove the  SCA SATA  drive tray from the chassis     Procedures    1  Press the release tab located on the drive tray door to release the drive tray  from its locking position as shown below    2  Pull the drive tray door upward and then pull the drive tray out from the chas   sis  dia         e A  zum  d   yi     ge  x       3  Remove the screws to loosen the drive tray  Once loosened  pull it out from its  housing  Then  mount a hard drive in the drive tray and secure it with screws as  shown below        SCA  SATA  Drives  
15. at head 6 32 x 5mm    RAIL  O Round head M4 x 4 mm       O Flat head M5 x 12 mm    Go Washer for ms          SUPER   SC823 Chassis User s Guide       B  Chassis Front View and the Front Control Panel    Chassis Front Panel    The SC823T SC823S Series                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
16. e esaea eaae pu UD M NUES FERE EE 2 1  A  Contents of the Accessory Kit n erro uic oce os 2 1  B  Chassis Front View and the Front Control Panel                                  2 2  C  Chassis Rear View and the Back Panel                                         ssss 2 4  2 2  Chassis InstallatiOB mr 2 6  A  Important Safety Guidelines       cocccncnoninininococooncncccnncnnnncnncnnncnnnanannnrnnnnrn ones 2 6  B  TOOLS IN aaron iria esgetUde Cubes 2 6  C  Removing the Top Cover of the Chassis                                  esssssss 2 7  D1  Accessing the SCA SATA Drive Tray and Installing a Hard Disk    2 8  D2  Accessing the IDE Drive Tray and Installing a Hard Disk                  2 9  E  Accessing the Front Chassis Fans and Installing the Air Shroud    2 10  F  Accessing the Redundant Power Supply                                              2 11  G  Installing the Motherboard              c ccccccccccceceeceeeeeeeeceeeeeseseseeeceneneaeeeeeeees 2 12  El Tpstalling Cassie Ral iniciacion 2 13  le RACK ucc T M 2 15    1 3    SUPER   SC823 Chassis Users Guide       Chapter 1 Safety Information and Technical  Specifications    1 1 Electrical Safety Guidelines    Warning  To avoid electrical shock  check the power  cords as follows     Checking the Power Cords   Use the exact type of power cords as required           eBe sure to use power cord s  that came with safety certifications     eThe power cord s  must be compliant with the AC voltage requirements in your  region    
17. low all the safety steps listed below        Before accessing the chassis       Turn off all peripheral devices connected to the SC823      Press the power button to power off the system      Unplug all power cords from the system or the wall outlets      Disconnect all the cables and label the cables for easy identification     a Fr OO N        Use a grounded wrist strap designed to prevent static discharge when  handling components     Removing the chassis covers     After completing the above steps  you can remove the covers and install  components peripheral devices into the chassis as described in Chapter 2     1  Unlock and remove the screws and fasteners to remove the cover or  components    2  Save all the screws and fasteners for later use   If necessary  label these  screws or fasteners for easy identification     3  Follow the instruction given in Chapter 3 to remove the chassis covers     Reinstalling the chassis covers     To maintain proper system cooling and airflow  do not operate the system  without installing all chassis covers back to the chassis  To reinstall the chassis  covers  please follow the steps listed below     1  Make sure that all components and devices are securely fastened  on the chassis and there are no loose parts screws inside the chassis   2  Make sure that all cables are properly connected to the connectors and ports   3  Use the original screws or fasteners to install the covers to the chassis   4  Be sure to lock to the chassis or the 
18. nboard battery  upside down to avoid possible explosion  Make sure that the positive side  should be facing up on the motherboard  This battery must be replaced  only with the same or an equivalent type recommended by the manufac   turer  Dispose of used batteries according to the manufacturer s instruc   tions         CD ROM Laser  CAUTION   Do not open the enclosures of power supplies  or CD ROM to avoid injury     1 2 General Safety Guidelines    Warning  Follow these rules to ensure general safety     Keep the area around the SC823 chassis clean and free of clutter        9 To avoid injuries to the back  be sure to use your leg muscles  keep your  back straight  and bend your knees  when lifting the system     O After removing the components or chassis covers from the system  place  them on a table for safeguard     O Avoid wearing loose clothing to preventing it from coming into contact with    O Be sure to remove any jewelry or metal objects before working on the  chassis to avoid short circuits should these objects come into contact  with power circuits       After accessing the interior of the chassis  be sure to close the chassis  with chassis covers and secure the chassis to the racks with screws     1 5    SUPER   SC823 Chassis Users Guide       1 3 ESD Safety Guidelines          Electric Static Discharge  ESD  can damage electronic com    N onents  To prevent damage to your system board  it is  important to handle it very carefully  The following measures are     
19. system to prevent unauthorized access   5  For proper cooling  enclose the chassis with covers before operating the  System     1    SUPER   SC823 Chassis Users Guide       Before installing the chassis into a rack      a    Make sure that the rack is securely anchored onto an unmovable surface or  structure before installing the chassis into the rack       Unplug the power cord s  of the rack before installing the chassis into the    rack       Make sure that the system is adequately supported and that all the    components are securely fastened to the chassis to prevent com   ponents from falling off from the chassis       Be sure to install an AC Power Disconnect for the entire rack assembly and    this Power Disconnect must be clearly marked       The rack assembly shall be properly grounded to avoid electric shock     The rack assembly must provide sufficient airflow to the chassis for proper    cooling     1 5 Product Compliance Information    The SC823 Chassis is compliant with the following safety standards   requirements     Product Safety   Canada USA  UL60 950 CSA60 950   European Union  EN 60 950   International  IEC 60 950    Electromagnetic Compatibility  EMC  Emissions   European Union  EN55022  1994   International  CISPR 22    USA  Title 47 CFR  Part 15    Electromagnetic Compatibility Immunity   European Union  EN55024  1998   International  CISPR 24    Power Line Harmonics Voltage Flicker   European Union  EN61000 3 2 EN61000 3 3   International  IEC61000 3
20. te of California  USA  The State of California  County of  Santa Clara shall be the exclusive venue for the resolution of any such disputes   Supermicro s total liability for all claims will not exceed the price paid for the hardware  product     Unless you request and receive written permission from SUPER MICRO COMPUTER  you  may not copy any part of this document     Information in this document is subject to change without notice  Other products and  companies referred to herein are trademarks or registered trademarks of their respective  companies or mark holders     Copyright     2004 by SUPER MICRO COMPUTER INC   All rights reserved   Printed in the United States of America    1 2    Chapter 1  Safety Information and Technical Specifications       Table of Contents    Chapter I  Safety Information and Technical Specifications            1 4  1 1  Electrical Safety Guidelines                                            cecus  1 4  1 2  General Safety Guidelines                                              eeeeeeeeeeeeeeee 1 5  1 3  ESD Safety Guidelines             eirrei rone tuae eae e rara nhan an uo n pnnnuE 1 6  1 4  Operation Safety Guidelines                                               eres 1 6  1 5  Product Compliance Information                                           s  1 8  1 6  Packing List and the SC823 Specifications                              1 9   Chapter 2  Chassis Description and Installation Procedures          2 1  2 1  Chassis  DeSCHIDUOTI  icss
21. ull out the Inner  rail  to be  attached on the  chassis      d    Press the Locking Tab       SUPER   SC823 Chassis User s Guide       3  Locate the five rail hooks on each side of the chassis and the five corre   sponding holes on each of the inner rail     4  Align the five holes on the rail against the corresponding hooks on the  chassis  Once aligned  attach the inner rail to the chassis by pressing the holes  into the corresponding hooks     5  Once the rail is placed on the chassis  pull the rail forward until you hear the  click     6  Secure the rail to the chassis with a Type   screw  Refer to Page 2 1 for the  Type lI screw   Repeat the above steps to install other rail on the chassis                    Chapter 2  Chassis Description and Installation Instructions       l  Rack Installation    After you have installed the inner rails on the chassis  you are ready to install the  outer rails of rail assemblies to the rack        The rails are designed to fit in the racks with the depth of 28  to 33       Procedures    1  Inthe package  locate a pair of front   short  and rear   long  brackets  Please  note that the brackets are marked with Up Front Arrows   front  and Up Rear  arrows   rear      2  Secure the front   short  bracket  marked with the Up Front arrows  to the  outer rail with two Type   screws     3  Attach the rear   long  bracket to the rail unit by sliding the rear rail into the  rail unit  Insertthe complete rail assembly into the chassis     4  Meas
22. ure the depth of your rack and adjust the length ofthe rail assembly  accordingly     5  Repeat the same steps to install the other rail assembly into the chassis     6  Secure both outer rail assemblies to the rack with Type J screws and Type K  washers                    2 15    SUPER   SC823 Chassis User s Guide       7  Slide the SC823 chassis into the rack until you hear the click      The SC823 chassis may not slide into the rack smoothly or easily when installed  the first time  However  some adjustment to the slide assemblies might be needed  for easy installation      8  You will need to release the safety tabs on both sides of the chassis in order  to completely remove the chassis out of the rack                                                        2 16    
    
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