Dell OptiPlex 5055 A Series Small Form Factor OptiPlex 5055 Small Form Factor
Dell OptiPlex 5055 A Series Small Form Factor Manual
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- Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 1
Dell OptiPlex 5055 Small Form Factor Owner's Manual Regulatory Model: D11S Regulatory Type: D11S003 - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 2
use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2018 2018 Dell Inc. or its subsidiaries. All rights reserved. Dell - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 3
Contents 1 Working on your computer...6 Safety instructions...6 Turning off your computer...6 Turning off your - Windows...6 Before working inside your computer...7 After working inside your computer...7 2 Chassis...8 Front chassis view...8 Back chassis view ...9 3 - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 4
Installing the processor...26 Intrusion switch...27 Removing intrusion switch...27 Installing intrusion switch...28 Memory modules...28 Removing memory module...28 Installing memory module...28 VGA Daughterboard...29 Removing the VGA daughter board...29 Installing the VGA daughter board...29 SD card - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 5
the Dell BIOS in Linux and Ubuntu environments 58 Flashing the BIOS from the F12 One-Time boot menu 59 Specifications...62 6 Troubleshooting...67 Diagnostic and Power LED codes...67 Enhanced Pre-Boot System Assessment - ePSA diagnostics 71 7 Getting help...72 Contacting Dell...72 Contents - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 6
only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 7
To avoid damaging your computer, perform the following steps before you begin working inside the computer. 1 Ensure that you follow the Safety Instruction. 2 Ensure that your work surface is flat and clean to prevent the computer cover from being scratched. 3 Turn off your computer. 4 Disconnect - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 8
Front chassis view 2 Chassis 1 Power button and power light 3 Memory card reader (optional) 5 Headset port 7 USB 2.0 port 2 Hard drive activity light 4 Optical drive (optional) 6 USB 2.0 port with PowerShare 8 USB 3.1 Gen1 port 8 Chassis - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 9
Power supply diagnostic light 11 Kensington security cable slot 13 PS/2 mouse port 15 Release latch 2 DisplayPort 4 PS/2 keyboard port 6 USB 2.0 ports (supports Smart Power On) 8 Power connector port 10 Padlock ring 12 Network port 14 VGA connector port (optional) 16 Cable cover lock slot Chassis - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 10
Back cover 3 Disassembly and reassembly Removing cover 1 Follow the procedure in Before working inside your computer. 2 To release cover: a Slide the blue retention tab to the right to unlock the cover [1]. b Slide the cover toward the back of the computer [2]. 3 Lift the cover to remove it from - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 11
Installing cover 1 Place the cover on the computer and slide the cover forward until it clicks into place. 2 Follow the procedure in After working inside your computer. Front Bezel Removing the front bezel 1 Follow the procedure in Before working inside your computer. 2 Remove the cover. 3 To remove - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 12
Installing front bezel 1 Insert the tabs of the bezel into the slots on the chassis. 2 Press the bezel until the tabs click into place. 3 Install the cover. 4 Follow the procedure in After working inside your computer. Storage device Removing 2.5-inch hard drive assembly 1 Follow the procedure in - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 13
4 Slide and lift the hard drive assembly from the computer. Disassembly and reassembly 13 - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 14
Removing 2.5-inch hard drive from the hard drive bracket 1 Follow the procedure in Before working inside your computer. 2 Remove the: a cover b 2.5 inch hard drive assembly 3 To remove hard drive bracket: a Pull one side of the hard drive bracket to disengage the pins on the bracket from the slots - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 15
Installing 2.5-inch hard drive into the hard drive bracket 1 Flex the side of the hard drive bracket, to align and insert the pins on the bracket into the hard drive. 2 Insert the hard drive into the hard drive bracket until it clicks into place. 3 Install the: a 2.5 inch hard drive assembly b cover - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 16
4 To remove the PCIe expansion card: a Pull the release latch to unlock the PCIe expansion card [1]. b Push the release tab [2] and lift the PCIe expansion card out of the computer [3]. NOTE: The release tab is at the base of the expansion card. 16 Disassembly and reassembly - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 17
5 Repeat the steps to remove any additional PCIe expansion cards. Installing PCIe expansion card 1 Insert the expansion card into the connector on the system board. 2 Press the expansion card until it clicks into place. 3 Close the expansion card latch and press it until it clicks into place. 4 - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 18
NOTE: Illustration on how to remove the shroud is also given on the shroud. b Lift the cooling shroud away from the chassis. 18 Disassembly and reassembly - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 19
Installing cooling shroud NOTE: When inserting the shroud on the processor assembly, please ensure that the data and power cables of the optical drive do not get caught inside the shroud. 1 Align the slots on the cooling shroud, with the screws on the heat sink. 2 Insert the cooling shroud over the - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 20
b Remove the coin cell battery from the connector on the system board [2]. Installing coin cell battery 1 Hold the coin cell battery with the "+" sign facing up and slide it under the securing tabs at the positive side of the connector. 2 Press the battery into the connector until it locks into - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 21
d 2.5 inch hard drive assembly 3 To remove optical drive: a Release the cables from the retention clip [1]. b Slide the blue tab to unlock the optical drive assembly [2]. 4 To remove the optical drive assembly: a Pull the tab upward to release the assembly [1]. b Holding the tab, disconnect the - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 22
NOTE: After releasing the Optical drive, you can also flip the drive assembly for easy access to the drive cables. NOTE: The Optical drive cables are available on side of the drive assembly. 5 To remove the optical drive: a Slide the tab to release the optical drive [1]. b Push the optical drive - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 23
b cooling shroud c front bezel d cover 7 Follow the procedure in After working inside your computer. M.2 PCIe SSD Removing M.2 PCIe SSD 1 Follow the procedure in Before working inside your computer. 2 Remove the: a cover b front bezel c 2.5 inch hard drive assembly d cooling shroud e optical drive 3 - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 24
Installing M.2 PCIe SSD 1 Insert the M.2 PCIe SSD to the connector 2 Press the blue plastic tab to secure the M.2 PCIe SSD. 3 Install the: a optical drive b cooling shroud c 2.5 inch hard drive assembly d front bezel e cover 4 Follow the procedure in After working inside your computer. Heat sink - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 25
Installing heat sink assembly 1 Align the screws of the heat sink assembly with the holders on the system board. 2 Place the heat sink assembly on the processor. 3 Replace the 6 captive screws to secure the heat sink assembly to the system board. NOTE: Tighten the screws based on the order given in - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 26
a cover b front bezel c 2.5 hard drive assembly d cooling shroud e optical drive f heat sink assembly 3 To remove the processor: a Release the socket lever by pushing the lever down and out from under the tab on the processor shield [1]. b Lift the lever upward and lift the processor shield [2]. c - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 27
6 Install the: a heat sink assembly b optical drive c cooling shroud d 2.5 hard drive assembly e front bezel f cover 7 Follow the procedure in After working inside your computer. Intrusion switch Removing intrusion switch 1 Follow the procedure in Before working inside your computer. 2 Remove the: a - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 28
Installing intrusion switch 1 Insert the intrusion switch into the slot on the computer. 2 Connect the intrusion switch cable to the connector on the system board. 3 Install the: a cooling shroud b front bezel c cover 4 Follow the procedure in After working inside your computer. Memory modules - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 29
VGA Daughterboard Removing the VGA daughter board 1 Follow the procedure in Before Working Inside Your Computer. 2 Remove the: a Back Cover b Bezel 3 Open the Front Bezel Door 4 To remove the VGA daughter board: a Remove the screws that secure the VGA connector to the computer [1]. b Slide the VGA - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 30
Installing SD card reader 1 Place the SD card in the slot on the system board. 2 Tighten the 6 screw to secure the SD card reader to the front panel door. 3 Install the: a M.2 PCIe SSD b optical drive c cooling shroud d 2.5 inch hard drive assembly e front bezel f cover 4 Follow the procedure in - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 31
c 2.5 inch hard drive assembly d cooling shroud e optical drive 3 To release the PSU: a Disconnect the PSU cables from the connectors on the system board [1]. b Unroute the PSU cables from the retention clips [2, 3]. 4 To disconnect the cables: a Disconnect the power cable from the system board [1] - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 32
5 To remove the PSU: a Press the blue release tab [1] b Slide the PSU and lift it away from the computer [2]. 32 Disassembly and reassembly - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 33
Installing power supply unit - PSU 1 Insert the PSU into the slot. 2 Slide the PSU towards the back of the computer until it clicks into place. 3 Replace the screws( 6lbs) to secure the PSU to the computer. 4 Route the PSU cables through the retention clips. 5 Connect the PSU cables to the - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 34
a cover b front bezel c 2.5 inch hard drive assembly d cooling shroud e optical drive 3 To release the power switch: a Disconnect the power switch cable from the system board [1]. b Press the power switch retention tabs and pull out from the computer [2, 3]. Installing power switch 1 Slide the power - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 35
e cover 4 Follow the procedure in After working inside your computer. Speaker Removing speaker 1 Follow the procedure in Before working inside your computer. 2 Remove the: a cover b front bezel c 2.5 inch hard drive assembly d cooling shroud e optical drive 3 To remove the speaker: a Disconnect the - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 36
3 Install the: a optical drive b cooling shroud c 2.5 inch hard drive assembly d front bezel e cover 4 Follow the procedure in After working inside your computer. System board Removing the system board 1 Follow the procedure in Before working inside your computer. 2 Remove the: a cover b front bezel - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 37
4 Disconnect the following cables and screw from the system board: a PSU [1] b hard drive and optical drive caddy stand off screw [2] c PSU [3] d power switch [4] e intrusion switch [5] Disassembly and reassembly 37 - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 38
5 To remove the I/O panel plate: a Remove the 6 screw that secures the I/O panel [1]. b Slide and push toward the front from the computer [2]. 38 Disassembly and reassembly - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 39
6 To remove the system board: a Remove the 12 screws that secure the system board to the computer b Slide and lift the system board away from the computer [2]. Disassembly and reassembly 39 - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 40
Installing the system board 1 Hold the system board by its edges and align it toward the back of the computer. 2 Lower the system board into the chassis until the connectors at the back of the system board. 3 Align with the slots on the chassis, and the screw holes on the system board align with the - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 41
Connector (FAN_CPU) 9 M.2 Slot 3 Connector (M.2_SSD) 11 Media Card Reader Connector (CARD_READER) 2 PCI-e x4 Connector (SLOT1) - open ended X4 to support X16 4 Processor Socket (CPU) 6 Intrusion Switch Connector (INTRUDER) 8 Memory Slots (DIMM1,DIMM2,DIMM3,DIMM4) 10 Power Switch Connector (PWR_SW - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 42
Color (SATA0) 16 Front USB2.0 Connector (Front_USB) 18 Clear CMOS Jumper (CMOS_CLR); Clear Password Jumper (PASSWORD_CLR); Clear Password ; Jumper (PASSWORD_CLR); Service Mode Jumper (SERVICE_MODE) 20 Internal USB Connector (WF_BT_USB) 22 Battery Connector (BATTERY) 42 Disassembly and reassembly - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 43
4 Technology and components This chapter details the technology and components available in the system. Topics: • Systems management features • In-Band Systems Management - Dell Client Command Suite • Out-of-Band Systems Management - DASH • AMD APUs, AMD Ryzen CPUs and APUs • AMD PT B350 • AMD - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 44
services management for desktop and mobile client systems. Through DASH, DMTF provides the next generation of standards for secure out-of-band and remote management of desktop and mobile systems. OptiPlex 5055 with DASH 1.2 on BCM5762 supports workloads. • Open CL, C++: Support for Open CL and C++ - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 45
• Performance: Simultaneous multithreading (SMT) to allow execution of two threads per core, increasing the Instruction Per Cycle(IPC) thus enhancing the processing throughput. • Power: AMD's Sense MI technology employs sensors across the chip to dynamically scaling the frequency and voltage - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 46
Table 2. Key Specifications Specification Product Line API Supported Clock Speed Bus Width Memory Clock Speed Technology Max External Resolution Interface Type AMD Radeon R7 M450 AMD DirectX 12 , OpenCL 1.2 , OpenGL 4.3 925 MHz 128- - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 47
bus power and increased device current draw to better accommodate power-hungry devices • New power management features • Full-duplex data transfers and support for new transfer types • Backward USB 2.0 compatibility • New connectors and cable The topics below cover some of the most commonly asked - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 48
present on USB 3.1 Gen 1 cables and only come into contact when connected to a proper SuperSpeed USB connection. Windows 8/10 will be bringing native support for USB 3.1 Gen 1 controllers. This is in contrast to previous versions of Windows, which continue to require separate drivers for USB 3.1 Gen - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 49
, perhaps not on its immediate release, but in a subsequent Service Pack or update. It is not out of the question to think that following a successful release of USB 3.1 Gen 1 support in Windows 7, SuperSpeed support would trickle down to Vista. Microsoft has confirmed this by stating that most - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 50
on the system display the new ON-FLASH-FLASH or ON-FLASH-ON failure code. If all memory fails, the LCD does not turn on. Troubleshoot for possible memory failure by trying known good memory modules in the memory connectors on the bottom of the system or under the keyboard, as - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 51
5 System setup System setup enables you to manage your desktop hardware and specify BIOS level options. From the System setup, you can: • Change the NVRAM settings after you add or remove hardware • View the system hardware configuration • Enable or disable integrated devices • Set performance and - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 52
Mode Date/Time Description Displays the following information: • System Information: Displays BIOS Version, Service Tag, Asset Tag, Ownership Tag, Ownership Date, Manufacture Date, Express Service Code and the Singed Firmware Update. • Memory Information: Displays Memory Installed, Memory Available - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 53
system startup. The Enable Smart Reporting option is disabled by default. Allows you to enable or disable the integrated USB controller for: • Enable Boot Support • Enable Front USB Ports • Enable Rear USB Ports All the options are enabled by default. This option allows you to charge the external - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 54
UEFI capsule update packages. This option is selected by default. Disabling this option will block BIOS updates from services such as Microsoft Windows Update and Linux Vendor Firmware Service (LVFS) Allows you to control whether the Trusted Platform Module (TPM) is visible to the operating system - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 55
Option Expert key Management Description • Disable (selected by default) • Enable Allows you to manipulate the security key databases only if the system is in Custom Mode. The Enable Custom Mode option is disabled by default. The options are: • PK (default) • KEK • db • dbx If you enable the Custom - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 56
to wake the computer from standby mode. The option "Enable USB Wake Support" is selected by default This option allows the computer to power up from enabled by default. Table 14. Maintenance Option Service Tag Asset Tag Description Displays the Service Tag of your computer. Allows you to create - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 57
is completed. 1 Restart the computer. 2 Go to Dell.com/support. • Enter the Service Tag or Express Service Code and click Submit. • Click Detect Product and follow the instructions on screen. 3 If you are unable to detect or find the Service Tag, click Choose from all products. 4 Choose the Products - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 58
on this subject, see Knowledge Article: http://www.dell.com/support/article/sln153694 Updating your system BIOS using a USB flash drive If exe and press Return. 8 The BIOS Update Utility will load, follow the instructions on screen. Figure 4. DOS BIOS Update Screen Updating the Dell BIOS in - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 59
need: • USB key formatted to the FAT32 file system (key does not have to be bootable) • BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB key • AC power adapter connected to the system • Functional system battery to flash the BIOS Perform - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 60
4 The E5450A14.exe file is shown as an example in the following screenshot. The actual file name may vary. 5 Once the file is selected, it will show in the file selection box and you can click the OK button to continue. 60 System setup - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 61
6 Click the Begin Flash Update button. 7 A warning box is displayed asking you if you want to proceed. Click the Yes button to begin the flash. System setup 61 - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 62
8 At this point the BIOS flash will execute, the system will reboot and then the BIOS flash will start and a progress bar will show the progress of the flash. Depending on the changes included in the update, the progress bar may go from zero to 100 multiple times and the flash process could take as - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 63
Table 17. Chipset Feature Chipset Table 18. Processor Feature Processor type Total cache Table 19. Memory Feature Memory type Memory speed Memory connectors Memory capacity Minimum memory Maximum memory Table 20. Video Feature Integrated Optional Table 21. Audio Feature Integrated Table 22. Network - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 64
1x1 • Bluetooth 4.1 NOTE: For optimal performance, it is recommended to use the wireless display feature with an access point that supports 5 GHz standard. Specification • 2.5-inch SATA drive bay • 3.5-inch SATA drive bay • M.2 SATA & NVMe Specification • Universal headset • Line out connector RJ - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 65
Feature Specification NOTE: Available video connectors may vary based on the optional graphic board selected. Table 27. Controls and lights Feature Specification Front of the computer Power button light White light - Solid white light indicates power-on state; slow blinking white light - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 66
Table 30. Environmental Feature Temperature range Operating Non-Operating Relative humidity (maximum) Operating Non-Operating Maximum vibration Operating Non-Operating Maximum shock Operating Non-Operating Altitude Operating Non-Operating Airborne contaminant level Specification 5°C to 35°C (41°F - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 67
Table 31. Power LED states Power LED light status Off Steady/blinking amber Slow Blinking white light Steady white Possible cause Troubleshooting steps The computer is either turned • off or is not receiving power or in Hibernation mode. • • Re-seat the power cable in the power connector - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 68
> 1 blink > long pause > repeats Problem Description Bad Motherboard Suggested Resolution Replace the motherboard 2 blinks > short pause > 2 blinks > long pause > repeats Bad Motherboard, Power Supply or Power Supply cabling If customer can assist to troubleshoot, narrow down the issue with PSU - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 69
State S4 S5 S6 State Name PCI VID STO Blinking Amber Pattern Problem Description Suggested Resolution If customer can assist to troubleshoot, narrow down the issue with reseating memory and swapping a known good memory if available. If nothing works, replace the memory. 3 blinks > short pause > - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 70
S7 S8 S9 State Name USB MEM MBF Blinking Amber Pattern Problem Description Suggested Resolution If none of the memory failed, replace the in progress or storage subsystem failure. If customer can assist to troubleshoot, narrow down the issue by removing one by one storages on motherboard - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 71
be incompatible or in an invalid configuration. If customer can assist to troubleshoot, narrow down the issue by removing one by one the memory are completed successfully • View error messages that inform you of problems encountered during testing You can invoke the ePSA diagnostics by tapping F12 - Dell OptiPlex 5055 A Series Small Form Factor | OptiPlex 5055 Small Form Factor - Page 72
may not be available in your area. To contact Dell for sales, technical support, or customer service issues: 1 Go to Dell.com/support. 2 Select your support category. 3 Verify your country or region in the Choose a Country/Region drop-down list at the bottom of the page. 4 Select the appropriate
Dell OptiPlex 5055 Small Form Factor
Owner's Manual
Regulatory Model: D11S
Regulatory Type: D11S003