User Manual (v1.0)
Contents
1. GE HS DESIGN Ci Design SR524 User Manual Table of Contents PO aC ic ear eeben 1 LIMITED WARRANT E 1 PMA PROCEDURE eege 1 IMPORTANT SAFETY INSTRUCTIONS eege eege eege 2 DEE 2 GUIGE1O CONVENT E 2 Merz ule ciRSeu uesnm 3 CHAPTER 1 CHASSIS DESCRHIPTION c cceeeeeee ee nennen nna n unen n anna n nns 6 OVERVIEW 6 dequo S 6 Items Needed to Be Purchased ZGeparatehy 6 CHAPTER 2 FEA TURE SUMMARY eeeeeeeeee eee eene nennen nnn nnn nana sana nnnm n nus 7 Chassis Front Panel and Peripheral Dave 8 Chassis Rear I O Ports and Features 8 Front Panel Controls and Indicators esee nnns 9 u 1 1 0 10 Hot Swappable Hard Disk Drives eiie 10 NIST OT WG e 10 CHAPTER 3 INTEGRATION STEP Sbortasssssacccccccecceeeeeennssnnnneeennnennnnnneseesessaasanaanes 11 BEFORE e l 1 0 MEE 11 Supplies Noco assinei nnen iai eee sees essa aun a a RA RR RR RR RR MANERA Y RA RR RAN RR ARR R 4 aas 11 Understand Assembly Safety Instructions sess 11 Integration Warnings 12 hemoving Ee 13 Changing the Hot Swappable tan 14 Replacing a Back Panel kt 15 mz mendo 16 Installing the Server Poar 19 Removing the Hard Disk Drive Tray esses eene2. K SE a LEI LEE FFI EES JP Jg JP10 JP11 JPA BUZZER e Funcion 12 volt power connector This diagram is representative of the latest board revision available at the time of publishing 1 1 Power Input Header JP5 Power Input Header Power Supply Reset Input Power Fail TTL Power Fail TTL a e e DESIGN Ie Ci Design SR524 User Manual 1 2 Motherboard Connector Header JP6 Motherboard connector header 1 2 System Power Switch System Reset Switch Access LED 39 Access LED LAN1 LED 8 LAN1 LED 9 LAN2 LED LAN2 LED 1 3 Front Panel Connector Header JP7 e e Se e 6 Ge Se D GO amp amp e e e e e e e e e e G ME AR Power LED 8 Power LED 9 X AccessLED LL 10 X AccessLtED Ground 7 2 4 6 1 3 9 7 9 1 4 Thermocouple Header JP21 JP21 Thermocouple header 1 2 HS DESIGN Ci Design SR524 User Manual 1 5 Hot Swap Fan Switch SW1 Number 3 up ON 1 and 2 down OFF FAN 3 detect enabled All down OFF Fan detection disabled 1 6 Thermocouple Threshold Switch SW2 SW3 Disable Feedback from Thermocouple HE DESIGN Ci Design SR524 User Manual Installing the Server Board 1 Install the I O shield from the inside of the chassis to the back panel Position one edge so the groove is outside the back panel wall and push until it is seated compl
3. tested certified and or documented to illustrate compliance to the regional regulations and laws for where the product will be sold The peripherals and add in cards chosen for integration should have individual regulatory approvals CAUTION System components must be installed in the order presented in the assembly instructions Component damage may result if installed in a different order Supplies Needed Before beginning you should make sure you have the following components available e Anti static wrist strap e SH 524 accessory kit e Server board processors and memory to add to the server board server version e Optional peripherals and add in cards e Philips screwdriver Understand Assembly Safety Instructions Before installation you should make sure you follow certain basic safety precautions CAUTION Integration and servicing of this chassis assembly should only be performed by technically qualified persons Follow these guidelines to meet and maintain safety and product regulatory requirements when integrating this chassis assembly e e Gee pesien Ci Design SR524 User Manual D Read and adhere to all of these instructions and the instructions supplied with this assembly If you do not follow these instructions the UL listing and other regulatory approvals may become void and the product will be non compliant with regional product laws and regulations Integration Warnings These warnings and ca
4. drive adapter PCB as shown 4 Place the slim FDD drive into the chassis Align the drive mounting holes to the chassis hooks 5 Slide the mounting hooks towards the slim FDD drive Fasten the mounting screw from the top of the chassis to secure the drive as shown 6 Connect the data cable the mini 4 pin power connector and the 34 pin floppy disk connector to the proper position CRE DESIGN SS Ci Design SR524 User Manual Installing a Slim CD DVD ROM Drive 1 Unscrew the two slim CD ROM cover plate mounting screws 2 Pull out the slim CD Rom cover plate and put it back into the accessories box 3 Take the slim CD DVD drive from the package and the slim CD DVD adapter PCB from the accessories box 4 Mount the slim CD DVD adapter PCB into the slim CD DVD drive Tighten the two screws as shown 5 Place the CD DVD drive into the chassis Align the CD DVD drive mounting holes with the chassis hooks 6 Slide the mounting hook towards the CD DVD drive as shown 7 Fasten the mounting screws from the top of the chassis to secure the drive as shown 8 Connect the mini 4 pin power connector and the 40 pin IDE connector to the proper position SS esicn 24 Ci Design SR524 User Manual Installing the Power Cord If the power cord supplied with the system is not compatible with the AC wall outlet in your region get one that meets the following criteria e The cord m
5. slide the whole cover back until you can lift it up from the chassis 3 Setthe top cover away from the immediate working area es BDESIGN Ci Design SR524 User Manual ee Changing the Hot Swappable Fan If a fan has failed the system alarm will beep and the Fan Fault LED will light up In addition the fan board will display a fault LED for the defective fan Follow these procedures to replace the failed fan 1 Remove the thumb screws from the fan bracket Pull out the defective fan from the chassis as shown 2 Unplug the 3 pin power cable from the fan power adapter board Remove the two flat head mounting screws as shown Remove the fan power adapter board 3 Replace with a functional fan and reverse steps 1 and 2 m GE neien P Ci Design SR524 User Manual Oe Replacing a Back Panel Kit The back panel IO panel for the SR524 comes with a motherboard I O shield cutout with seven PCI slots 1 Before removing the back panel WI remove the server board or other add in equipment that is mounted to the back panel 2 Unscrew the eight flat head mounting screws with a Philips screwdriver as shown in the figure 3 Slide the back panel towards the middle of the chassis until you can lift it up away from the chassis 4 Reverse Steps 1 to 3 to replace the new back panel Gs 8 BDESIGN Ci Design SR524 User Manual Fan Power Board Pa JPE JF 1 FANI FAM e i
6. Ci Design SR524 User Manual Preface Limited Warranty Ci Design warrants to the original purchaser that its external enclosure products including the components therein shall be free from defects in material and craftsmanship for a limited period of three 3 years from the date of invoice All other products carry limited lifetime warranties These are the only warranties Ci Design offers Ci Design makes no other warranties of any kind express or implied written oral or statutory and expressly disclaims any implied warranties including merchantability or fitness for any specific purpose or freedom from patent infringement regardless of origin under no circumstance is Ci Design liable for incidental or consequential damages Under normal use should the product under warranty fail in material or craftsmanship Ci Design will at its sole discretion 1 repair and return the product freight prepaid and honor the balance of the warranty period OR 2 replace the product freight prepaid and honor the balance of the warranty period Products that have been damaged through negligence accident or misuse of the purchaser or its agents will be at purchaser s discretion replaced at purchaser s expense or returned un repaired freight collect RMA Procedures Should it be necessary for any reason to return product to Ci Design an RMA Returned Material Authorization number must be obtained and the following procedures must be f
7. assis provides a variety of peripheral options that can be purchased separately and added to the system 1 Hard Disk Drive 2 Slim Floppy Disk Drive 3 Slim CD DVD Rom Drive Hot Swappable Hard Disk Drives The chassis comes with 24 drive trays for mounting the SCSI or SATA hard disk drives When a drive fails the backplane will detect the failure report it and power down the failed drive As the drives are hot swappable a support technician can then replace the failed drive and restore the data without shutting down the system intrusion Switch The system may include a preinstalled intrusion switch for the access cover that can be monitored by server management software When the cover is opened the switch located on the upper right hand corner of the chassis will transmit a signal to the server board where server management software will process the signal and respond by for example powering down the system or locking the keyboard eS HS DESIGN Ci Design SR524 User Manual Chapter 3 Before You Begin Before the SR524 can be installed you must assemble all hardware components that make up the system You may also need to purchase additional peripherals and add in cards before the installation The following integration steps help guide you through this assembly process and create your desired system configuration NOTE To maintain and ensure regulation compliance the fully integrated system should be
8. d cables exceeds 1800 pounds for a single 42U rack External cable weight contributes to overall of the rack installation Carefully consider cable weight in all designs Installation Requirement CAUTION Be aware of the center of gravity and tipping hazards Installation should be such that a hazardous stability condition is avoided due to uneven loading Ci Design recommends that the rack footings extend 10 inches from the front and back of any rack equipments 22U or higher Adequate stabilization measures are required Ensure that the entire rack assembly is properly secured and that all personnel are trained in proper maintenance and operation procedures Tipping hazards include personal injury and death Power Input and Grounding CAUTION Ensure your installation has adequate power supply and branch circuit protection Check nameplate ratings to assure there is no overloading of supply circuits that could have an effect on over current protection and supply wiring Reliable earthing of this equipment must be maintained Particular attention should be given to supply connections when connecting to power strips rather than direct connections to the branch circuit CS DESIGN SP Ci Design SR524 User Manual Thermal Dissipation Requirement CAUTION Thermal dissipation requirements of this equipment deployment mandate minimum unrestricted airspace of three inches in both the front and the rear The ambient within the rack may be g
9. en the Bracket with the screws provided Mount Bracket and Outer Rail to the Rack Cabinet FF ZS be fb i ee E L L L L kl L LI L LI nl kl wl Wi L Kl L L VW L L ER Align the mounting bracket and the external rail to the rack frame e Tighten the screw and hex nuts to the rack frame Then tighten the screw in step GER EDrsicN ES Ci Design SR524 User Manual Assemble Inner Rail to Chassis Place the inner rail along one side of the chassis Eb Align the mounting holes in the inner rail ta the mounting holes of the chas sis e Fasten the inner rail to the chassis using the screws a Repeat step 1 2 and 3 to attach the inner rail to the other side of the chas sis CAUTION Due to the weight of the chassis with the peripherals installed lifting the chassis and attaching it to the cabinet may need aaditional manpower If needed use an appropriate lifting device Insert Chassis into Rack Cabinet Slide the chassis toward the cabinet and make sure itis secure GER spesicn ge Ci Design SR524 User Manual Appendix A Use the following worksheet provided below to record information about your system tom qamdModeumbe im nm E GEN SE Server Board a ee ee LoT ee BE E GERE DESIGN Ci Design SR524 User Manual Appendix B Calculating DC Current Usage List all current consumption into the appropriate voltage l
10. etely Make sure the I O shield s edges snap into place Refer to your server board manual for further instruction 2 Check the server board mounting holes location Place the brass spacer from the accessories box into the chassis stud according to the server board mounting holes location as shown 3 With the brass standoffs installed into the correct location place the server board carefully into the chassis and secure the server board with the provided 6 32 screws SS esicn 19 Ci Design SR524 User Manual Dee Removing the Hard Disk Drive Tray Follow the instructions below to remove the Hard Disk Drive Tray from the chassis 1 Pull the retention lever toward you the lever will become free form the housing slot 2 Pull the hard drive tray until it is free from the chassis Installing a SCA SCSI or SATA Hard Disk Drive 1 Remove the hard drive from its wrapper and with the drive circuit side down position the connector end so that it is facing the rear of the carrier Align the holes in the drive to the holes in the drive mounting tray Insert the provided screws into the tray and secure the drive GE neen SR Ci Design SR524 User Manual 2 Push the drive tray into the drive bay Slot 3 Secure the drive into the bay i Push the right corner of the tray not the retention lever with your thumb toward the chassis The retention lever will automatic shift toward
11. evel for each device and calculate the total current on each voltage level Po Current Maximum at voltage level Server Board Proceso SS RES E Total Memory BEE a Rd DEE BEES T SE EE EEN NEE E ME A EN Add in Card 1 Add in Card 2 Add in Card 3 Cooling Fans 3x120mm Total Current Maximum Ratings for comparison Typical 7500rpm 40mm x40mm fan Higher speed fans required more current refer to the fan label for power consumption information Typical 930W Power Supply refer to the PSU label for power output characteristics information Calculating Total Power Usage From the worksheet above enter the total current for each column and then multiply the voltage by the total current to get the total wattage for each voltage level Add all the wattages up and find the total power usage Voltage level and total Total Watts for each voltage level current Tode dj M E RS 5 V x A JA JA C5 V x IA GEREDESIGN ES Ci Design SR524 User Manual WE Disclaimer Information in this document is provided in connection with Ci Design products No license express or implied by estoppel or otherwise to any intellectual property rights is granted by this document In no event will Ci Design be liable to the purchaser or to any user of the Ci Design product for any damages expenses lost revenues lost savings lost profits or any other incidental or consequential damages arising from
12. nnn 20 Installing a SCA SCSI or SATA Hard Disk Drive u cccsseccccccsssssseseesecesssesaeeeeeseees 20 Setting Up the SCSI ID Parameters on the SCSI SCA Version 21 Installing a Slim Bir BIDS C E E E AIE ANAE AA ET 22 Installing a Slim CD DVD ROM Drive ooaaanaaaaannnnnnnnnnnnnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnne 24 Installing the Power Cord iescccccccseeeeseccccecsssesseeccesesssueusecesssssauaeeeecesssssaaeneseeeeeeas 25 CHAPTER 4 INSTALLING THE SYSTEM INTO A RACK 26 HACK EQUIPMENT PRECAUTIONS eege Ee srRUI PEE IM EEUS E NDER USE 26 INSTALLATION Ecizelz e me T 27 Fed Ee e c 27 SS nesien Ci Design SR524 User Manual WE Ball Bearing Slide Rail Rack Installation sess 30 APPENDIX A EQUIPMENT LOG ec ceeeee eene eene nennen nenne nnn nhan nnn anna 34 APPENDIX B CALCULATING POWER USAQGE eee 35 j NOTE Some of the pictures graphics herein are for illustration purposes and could vary from real product es BDESIGN Ci Design SR524 User Manual Chapter 1 Overview The Ci Design SR524 Chassis is designed to support Server boards including ATX AXi and SSI 3 0 Server Boards The chassis is shipped in a container designed for protection and prevention of damage during shipment The chassis was carefully inspected before and during the packing
13. ollowed 1 Faxarequest to a Ci Design representative stating the reason for the return 2 he purchaser will be faxed or emailed an RMA number and instructions for returning products 3 The RMA number must appear on the shipping label of each carton and all shipping documents that are being returned The RMA product must be received by Ci Design within thirty 30 days after the authorization date 4 The Purchaser must ship returned products prepaid unless Ci Design has agreed in writing to other arrangements 5 n all circumstances any products being returned to Ci Design must be authorized via Ci Design RMA procedures BDESIGN Ci Design SR524 User Manual 6 Items may be returned for replacement or credit only cash refunds will not be given without specific written authorization made at the time the RMA is issued by Ci Design Items being returned must be original Ci Design products and covered by an applicable warranty period The authorized returned products must be packaged in their original packing material with all components present All returned items must be in re sellable new or unused condition If these requirements are not met Ci Design will recover the loss with increased restocking charges or return the products to the Purchaser If the Purchaser is requesting a credit to their account the Purchaser s written request for the RMA must be made within three 3 days after the receipt of the applicable product
14. ounting holes if that is the case simply tighten the mounting Screw 3 Again while holding the chassis in its mounting position tighten the screws and nuts in the front side of the rack cabinet or simply tighten the screws in the rack frames if threaded mounting holes are provided Gee osos 28 Ci Design SR524 User Manual 4 A view of the final assembly Final Aggembly View CS DESICN SS Ci Design SR524 User Manual OOO Ball Bearing Slide Rail Rack Installation Unpack the package box and locate the materials and documentation necessary for rack mounting All the equipment needed to install the server into the rack cabinet is included Kit Contents Contents of the rack mounting kit include Rack mounting brackets 4 Slide rail assembly 2 Bags of screws and nuts 8 x hex nut 8 32 8 x screw 8 32 1 4 inch 16x screw 10 32 1 2 inch TEE GER RDEsiGN SR Ci Design SR524 User Manual Slide Rail Assembly Components Outer Bracket Rail Ball Bearing Inner Slide server Rail Remove the Server Rail Reverse Angle View Extend the server rail from the outer bracket rail until the server rail release latch clicks a Push down the latch clicks ER Pull the server rail out of the inner slide HE DESIGN Ci Design SR524 User Manual Fasten Bracket and Outer Piece Rail Together iS Align the mounting bracket with the outer rail Fasten but not tight
15. procedure at the factory Evidence of any damage to the SR524 should be reported to the shipper immediately v NOTE Electrostatic discharge can damage electronic components Be sure you are properly grounded before beginning any procedure Items Included The following components are included with the SR524 Kits 1 5U rack mount chassis 24 Hard Drive Trays Three Power Cords U S or European version One 930W redundant Power Supply One Fan Bracket consisting of three 120mm redundant fans for system cooling o 0 kw DP One Power Distribution board Items Needed to Be Purchased Separately The following components will need to be purchased separately 1 RAID NAS controller card Server Board Minimum of one Intel Xeon processor or one AMDGOpteron processor DDR RAM memory DIMMs Hard Disk Drives HDD Slim Floppy Disk Drive FDD Slim CD ROM Drive PCI add in cards Other peripheral devices O e DE OO St c Se Ze MDESIGN Ci Design SR524 User Manual Chapter 2 The Ci Design Inc SR524 chassis provides rugged and reliable housing for Server solutions The chassis is designed to support 24 Hot Swappable SCSI or Serial ATA Hard Disk Drives HDD The chassis can also feature an optional slim line FDD CD ROM and one fixed or redundant PFC power supply 1 Power Supply Unit 2 Fan Controller Board 3 SATA SCSI Backplane 4 HDD Trays x24 e BDESIGN Ci Design SR524 User Manual WE Chas
16. reater than room ambient Installation should be such that the amount of air flow required for safe operation is not compromised The maximum temperature for the equipment in this environment is 122 F 50 C Consideration should be given to the maximum rated ambient Installation Sequence CAUTION It is strongly recommended to securely fasten the mounting rack to the floor or wall to eliminate any possibility of tipping of the rack This is especially important if you decide to install several SR 524 chassis in the top of the rack A brief overview of server installation follows 1 Select an appropriate site for the rack Unpack the server and rack mounting hardware Attach the rack mounting hardware to the rack and to the server Mount the server into the rack Connect the cables 2 P a S Turn on and initialize the server Fixed Rail Installation Skip this procedure if side rails are to be used For fixed installation mount the two rear brackets with the provided screws as shown in the figure below The bracket includes multiple holes allowing the enclosure to be mounted in racks of varying depths GERE DESIGN xi Ci Design SR524 User Manual 1 Tighten the screws into the rear rack bracket on both sides of the chassis with the screws provided 2 While holding the chassis in the mounting position tighten the screws and the nuts in the rear of the rack cabinet Some rail frames have threaded m
17. s Upon acceptance of the returned product s by Ci Design the Purchaser s account will be credited less a 25 restocking fee Ci Design cannot provide cash refunds Important Safety Instructions Read all these instructions Save these instructions for later use Following all warnings and instructions marked on the product Do not use the product near water GK o qe I This product should be operated from the type of power source indicated on the marking label If you are not sure of the type of power available consult your dealer or local power company 6 Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous voltage points or other risk Refer all servicing to authorized personnel Remarks Guide to Conventions The following notational conventions will be used throughout this manual These blocks are warnings or cautions and they are used as follows A CAUTION This icon indicates the existence of a potential hazard that could result in personal injury damage to your equipment or loss of data if instructions are not observed EDESIGN Ci Design SR524 User Manual V NOTE This icon indicates important points to consider during the integration process Notational Conventions The following notational conventions will be used in this document Dimension will be shown throughout this manual in a U S measurement and metric format e g 19in 482 6mm
18. sis Front Panel and Peripheral Bays To access the system controls and peripherals when a front face plate is installed unscrew the two thumbscrews and gently pull it towards you until it is released from the chassis 1 Slim Floppy Disk Drive 2 Front Panel Display 3 Slim CD 4 HDD Tray Chassis Rear I O Ports and Features 1 Power Supply Unit 2 Serverboard l O Shield 3 PCI slot brackets p EHDESIGN Ci Design SR524 User Manual Front Panel Controls and Indicators p POWER RESET AE SRY PWR C RA dh2 amp PSU Sr Control Button and functions a Power Button Toggles the system ON OFF 8 Reset Button Reboots and initializes the system Alarm Reset Button Reset the system alarm to mute C Power LED Continuous green light indicates the system has power applied to it Blinking green light indicates the system is sleeping No light indicates the system does not have power applied to it O HDD Act LED Blinking yellow ligjt indicates the hdd is being access Q NIC 1 LED Blinking green light indicates the NIC 1 Is being access 7 NIC LED Blinking green light indicates the NIC 2 is being access Temperature LED Continuous amber light indicates the system is too hot Power Fault LED Continuous amber light indicates the power supply unit failed di Fan Fault LED Continuous amber light indicates the system fan s failed reien Ci Design SR524 User Manual Peripherals The ch
19. the mounting tray slot ii Push the retention lever to lock in the drive tray Setting Up the SCSI ID Parameters on the SCSI Version The backplane boards installed on the unit will depend on the system you purchased Typically the system will have 3 SCSI channels with preset SCSI ID from ID O0 to ID 8 See below SCSI ID 0 SCSIID1 SCSIID2 SCSI ID 3 SCSI ID 4 SCSIID5 SCSIID6 SCSI ID 8 SCSI ID 0 SCSI ID 1 SCSI ID 2 SCSI ID 3 SCSI ID 4 SCSI ID 5 SCSI ID 6 SCSI ID 8 SCSI ID 0 SCSI ID 1 SCSI ID 2 SCSI ID 3 SCSI ID 4 SCSI ID 5 SCSI ID 6 SCSI ID 8 BDESIGN Ci Design SR524 User Manual Changing the SCSI ID configuration 1 Locate the SCSI PCB from the chassis as shown 2 Use a flat head screw driver to change the ID setting of the SCSI ID with the switch connector Available positions are O to F Make sure there are no duplicate SCSI ID numbers on the SCSI channel i f Installing a Slim Floppy Disk Drive The chassis allows the user to install a slim floppy disk drive Follow these steps 1 Unscrew the two screws of the front top cover and take the cover apart GER neien EE Ci Design SR524 User Manual 2 Take the slim FDD drive adapter PCB from the package Install the data cable to the board as shown Make sure the side colored blue is face down on the chassis 3 Mount the slim FDD drive adapter PCB into the chassis Tighten the two screws that come with the slim FDD
20. the purchase use or inability to use the Ci Design product even if Ci Design has been advised of the possibility of such damages Ci Design may make changes to specifications and product descriptions at any time without notice Intel and Intel Pentium are registered trademarks of Intel Corporation other trademarks or trade names mentioned herein are hereby acknowledged as being the property of their respective companies Copyright 2003 Ci Design Inc All Rights Reserved rJ CSSDESIGN SR
21. ust be rated for the available AC voltage and have a current rating that it at least 125 of the current rating of the server e The plug on the power cord that plugs into the wall outlet must be a grounding type male plug designed for use in your region e The connector that plugs into the AC receptacle on the power supply must be an IEC 320 sheet C13 type female connector e In Europe the cord must be less than 4 5 meters long and it must be flexible lt HAR gt harmonized or VDE certified cordage CAUTION Do not attempt to modify or use the supplied AC power cord if it is not the exact type required Country Cable Type Country Cable Type US Switzerland Continental sl Italy Europe D UK Australia New Zealand AW GE RpEsiGN x Ci Design SR524 User Manual Chapter 4 The SR524 is a rack mounted chassis Mounting holes on the front panel are set to RETMA spacing and will fit into any standard equipment rack with 3 5 inches of available vertical space Rack Equipment Precautions This document should be used only as an information source for planning your deployment Avoid personal injury and equipment damage by following accepted safety practices Floor Loading CAUTION Ensure proper floor support and ensure that the floor loading specifications are adhered to Failure to do so may result in physical injury or damage to the equipment and the facility Deployment of rack servers related equipment an
22. utions apply whenever you remove the chassis top cover to access the internal components V NOTE Electrostatic discharge can damage electronic components Be sure you are properly grounded before beginning any procedure Safety Guidelines 1 Turn off all peripheral devices connected to the server 2 Turn off the server from the OS or by pressing the power button on the front of the chassis then unplug the AC power cord from the chassis Disconnect all the peripheral cables and all network cable connected to the chassis 3 Provide electrostatic discharge protection by wearing an antistatic wrist strap attached to ground NOTE The power button on the front or rear panel DOES NOT turn off the AC power You MUST unplug the AC power cord Hazardous electrical conditions may be present on power network and peripheral cables Turn off the computer and disconnect all the cables before opening it Otherwise personal injury or component damage may result CAUTION Do NOT open the Power Supply Unit Hazardous voltages and currents are present within the power supply Refer servicing of the power supply to a qualified technician GEREDESIGN ie Ci Design SR524 User Manual WE Removing the Top Cover 1 Unscrew the thumbscrew by turning in the counter clock wise direction on the rear of the chassis If the thumb screw is too tight use a Philips screwdriver to loosen it 2 Pullthe top cover handle backward and
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