HP Pro All-in-One 3520 Maintenance & Service Guide HP Pro 3520 All-in-One
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- HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 1
Maintenance & Service Guide HP Pro 3520 All-in-One Business PC - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 2
copyright. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard Company. Maintenance & Service Guide HP Pro 3520 All-in-One Business PC First Edition (December 2012) Document Part Number: 713367-001 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 3
About This Book WARNING! Text set off in this manner indicates that failure to follow directions could result in bodily harm or loss of life. CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information. NOTE: Text set - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 4
iv About This Book - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 5
Table of contents 1 Product Features ...1 Overview ...1 Front Components ...2 Side Components ...3 Rear Components ...4 2 Installing and Customizing the Software ...5 Activating and customizing the software 5 Activating the Windows Operating System 5 Downloading Windows 8 updates 6 Customizing - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 6
Cleaning the Monitor ...13 Cleaning the Mouse ...14 Service Considerations ...14 Tools and Software Requirements 14 Screws 36 Sequential part number listing ...36 7 Removal and Replacement Procedures All-in One (AIO) Chassis 40 Preparing to Disassemble the Computer 40 Rear Cover ...41 Stand ... - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 7
Internet Access Problems ...118 Solving Software Problems ...120 Contacting Customer Support ...122 Appendix B HP PC Hardware Diagnostics 123 Why run HP PC Hardware Diagnostics 123 How to access and run HP PC Hardware Diagnostics 123 Downloading HP PC Hardware Diagnostics to a USB device 124 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 8
Codes 135 Appendix E Power Cord Set Requirements 139 General Requirements ...139 Japanese Power Cord Requirements 139 Country-Specific Requirements ...140 Appendix F Specifications ...141 All-in One Model ...141 Index ...142 viii - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 9
1 Product Features Overview HP Pro 3520 All-in-One Business PC offers the following features: ● Integrated All-in-One form factor ● 20-inch, 16:9, WLED, 1600x900, anti-glare, 250 nit display ● Adjustable tilt stand ● Intel H61 chipset supporting Intel 2nd and 3rd generation processors featuring - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 10
Front Components Component 1 Dual Microphone Array 2 Webcam 3 Webcam LED Component 4 Stereo speakers 5 20 inch diagonal widescreen LCD HD anti-glare display 2 Chapter 1 Product Features - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 11
Side Components Component 1 Power button 2 Optical disk drive 3 Hard disk drive LED indicator 4 Media card reader LED Indicator Component 5 6-in-1 media card reader 6 USB 3.0 ports 7 Microphone port 8 Headphone port Side Components 3 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 12
Rear Components Component 1 Security lock slot 2 Adjustable tilt stand 3 Power connector LED Indicator 4 Power connector Component 5 RJ-45 ethernet port 6 USB 2.0 ports 7 Audio line-out port 4 Chapter 1 Product Features - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 13
5 to 10 minutes. Carefully read and follow the instructions on the screen to complete the activation. We recommend that you register your computer with HP during operating system set up so you can receive important software updates, facilitate support questions, and sign up for special offers. You - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 14
operating system. To help keep the computer running optimally, HP recommends checking for the latest updates during the initial corner of the Start screen to display the charms. 2. Click Settings > Change PC Settings. 3. Click Personalize to change the display settings. To customize the Desktop: - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 15
3 Serial ATA (SATA) Drive Guidelines and Features NOTE: HP only supports the use of SATA hard drives on these models of computer. No Parallel ATA (PATA) drives are supported. SATA Hard Drives Serial ATA Hard Drive Characteristics Number of pins/conductors in data cable Number of pins in power - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 16
SMART ATA Drives The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for the HP Personal Computers have built-in drive failure prediction that warns the user or network administrator of an impending failure or crash of the hard drive. - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 17
information for the computer. Adherence to the procedures and precautions described in this chapter is essential for proper service. CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system board. You must disconnect the power cord - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 18
Grounding Methods and Equipment Use the following equipment to prevent static electricity damage to equipment: ● Wrist straps are flexible straps with a maximum of one-megohm ± 10% resistance in the ground cords. To provide proper ground, a strap must be worn snug against bare skin. The ground cord - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 19
+/- 10% resistance ● Static-dissipative table or floor mats with hard tie to ground ● Field service kits ● Static awareness labels ● Wrist straps and footwear straps providing one-megohm +/- 10% resistance ● Material handling packages ● Conductive plastic bags ● Conductive plastic tubes ● Conductive - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 20
Operating Guidelines To prevent overheating and to help prolong the life of the computer: ● Keep the computer away from excessive moisture, direct sunlight, and extremes of heat and cold. ● Operate the computer on a sturdy, level surface. Leave a 10.2-cm (4-inch) clearance on all vented sides of the - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 21
To clean the computer case, follow the procedures described below: ● To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab. ● For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping it with a cloth or swab dampened with clear water. - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 22
in mind during the disassembly and assembly of the computer. Tools and Software Requirements To service the computer, you need the following: ● Torx T-15 screwdriver (HP screwdriver with bits, PN 161946-001) ● Phillips #2 screwdriver ● Phillips #1 screwdriver ● Torx T15 screwdriver ● Flat-bladed - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 23
appropriate removal and replacement chapter for the chassis you are working on in this guide for instructions on the replacement procedures. WARNING! This computer contains a lithium battery. There is system or return them to HP, their authorized partners, or their agents. Service Considerations 15 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 24
boot order of bootable devices such as hard drives, optical drives, or USB flash media devices. ● Enable Quick Boot, which is faster than Full error occurs, the error is displayed regardless of the mode selected. To manually switch to Post Messages Enabled during POST, press any key (except F1 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 25
the system setup by saving system configuration information on a USB device and restoring it on one or more computers. ● Execute self-tests on a specified ATA hard drive (when supported by drive). ● Enable or disable DriveLock security (when supported by drive). Using Computer Setup (F10) Utilities - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 26
Computer Setup-File NOTE: Support for specific Computer Setup options may vary depending on the Removable Media Saves system configuration to a formatted USB flash media device. Restore from Removable Media Restores system configuration from a USB flash media device. Save Current Settings as - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 27
Computer Setup-Storage NOTE: Support for specific Computer Setup options may vary depending on the will be inaccessible. ● CD-ROM: Model, firmware version, serial number, connector color (not included for USB CDROM). ● SSD Life Used NOTE: Displays for solid-state drives. ● SMART (ATA disks only) ● - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 28
drives. For more information, see the eSATA white paper at www.hp.com. SATA Emulation Allows you to choose how the SATA controller and devices are of the three options. Operating systems usually do not require additional driver support in IDE mode. RAID - Allows DOS and boot access to RAID volumes - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 29
(DPS) self-tests. NOTE: This selection will only appear when at least one drive capable of performing the DPS self-tests is attached to the system. in which EFI boot sources (such as a internal hard drive, USB hard drive, USB optical drive, or internal optical drive) are checked for a bootable - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 30
Computer Setup-Security NOTE: Support for specific Computer Setup options may vary depending on the /Device Hidden (default is Device Available) for: ● Embedded security device ● System audio ● USB controller (varies by model) ● Network controller NOTE: You must disable AMT before trying to - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 31
Table 5-4 Computer Setup-Security (continued) Slot Security Allows you to disable any PCI or PCI Express slot. Default is enabled. Network Boot System IDs Enables/disables the computer's ability to boot from an operating system installed on a network server. (Feature available on NIC models only - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 32
) - Controls the underlying processor and chipset features needed to support a virtual appliance. Changing this setting requires turning the computer off boot path metrics, thereby avoiding re-authentication issues associated with USB keys inserted in a port. Default is enabled. System Security - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 33
one of the passwords is successfully provided during a subsequent cold-boot sequence. NOTE: This selection will only appear when at least one drive that supports is Don't Clear. ◦ Key Ownership-HP Keys/Custom Keys. Selecting Custom Mode troubleshoot your computer. Computer Setup (F10) Utilities 25 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 34
has a unique blink pattern. Default is disabled. NOTE: For Windows 8 systems with Fast Boot support, a normal shutdown goes to the S4 state, not the S5 state. ◦ S0 (On) are Disabled, LOs, L1, LOs and L1. Default is ASPM Disabled. USB 3.0 Controller - Sets ASPM of the bus. ASPM lets you set lower - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 35
Power On Self Test if the BIOS encounters some kind of problem while starting the PC. A POST error message will only display on screen if the during POST. This text does not display on Windows 8 systems with Fast Boot support. Other text also will not display (for example, Ownership Tag). Default is - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 36
enable/disable). The BIOS contains an embedded SATA RAID option ROM for RAID support. This can be temporarily disabled to save DCH space. Note that with the you to enable and disable the Intel Turbo Mode feature, which allows one core of the system to run at a higher than standard frequency and - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 37
flash media device and save the device for possible future use. To restore the configuration, insert the USB flash media device with the saved configuration and perform the Restore from Removable Media command with the Computer Setup (F10) Utility. (See Computer Setup-File - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 38
6 Illustrated parts catalog Computer major components Item (1) (2) (3) (4) Description Front bezel Display panels (18.5-inch, WLED, non-ZBD, 200 nits) Samsung CMI LG Stand Rear cover (does not include stand) 30 Chapter 6 Illustrated parts catalog Spare part number 709846-001 709833-001 709835- - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 39
Cables Description (1) Hard drive cable (2) Optical drive cable Display cable (LVDS) (not illustrated) Converter cable (not illustrated) Webcam cable (not illustrated) Antenna (not illustrated) Spare part number 709826-001 709827-001 709828-001 709829-001 709830-001 709836-001 Cables 31 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 40
Boards Description (1) System board (includes replacement thermal material) For use in models with Windows 8 with no Digital Product Key (DPK) For use in models with Windows 8 Standard For use in models with Windows 8 Professional (2) Converter board (3) Webcam module (4) Ralink RT5390R 802.11bgn - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 41
Description Intel Pentium Dual-Core processors: ● G2130 processor, 3.2 GHz ● G2120 processor, 3.1 GHz ● G645 processor, 2.9 GHz ● G640 processor, 2.8 GHz Intel Celeron processors: ● G1620 processor, 2.7 GHz ● G550 processor, 2.6 GHz ● G540 processor, 2.5 GHz Spare part number 715898-001 703282-001 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 42
PCH Vaxg Vcore Thermal pad, SODIMM Conductive tape (hard drive; 36mm x 11mm) AC adapter, 120W Mouse (USB, optical; not illustrated) Keyboard (not illustrated) USB Wireless Jade, wired, USB 34 Chapter 6 Illustrated parts catalog Spare part number 709832-001 671558-001 709831-001 671582-001 709840 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 43
Thermal pads Description Thermal pads PCH Vaxg Vcore Thermal pad, SODIMM Spare part number 709842-001 709843-001 709844-001 709845-001 Thermal pads 35 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 44
691934-001 691935-001 697319-001 701396-001 Description Mouse, USB, optical 1.5 TB hard drive 2 TB hard drive Hard drive, 1-TB Hard drive , 500-GB Intel Core i3 2120 processor, 3.3 GHz HP SuperMulti DVD Writer Drive (includes bezel) Intel Celeron G540 processor, 2.5 GHz Intel - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 45
Keyboard, wireless, International English Keyboard, jade, wired, USB, United Kingdom Keyboard, jade, wired, USB, Germany Keyboard, jade, wired, USB, France Keyboard, jade, wired, USB, Italy Keyboard, jade, wired, USB, Spain Keyboard, jade, wired, USB, Denmark Sequential part number listing 37 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 46
, USB, Germany Keyboard, USB, France Keyboard, USB, Italy Keyboard, USB, Spain Keyboard, USB, Denmark Keyboard, USB, Norway Keyboard, USB, Sweden Keyboard, USB, Switzerland Keyboard, USB, Portugal Keyboard, USB, Turkey Keyboard, USB, Greece Keyboard, USB, Arabic Keyboard, USB, Belgium Keyboard, USB - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 47
-001 709846-001 715893-001 715894-001 715895-001 Description Keyboard, USB, Romania Keyboard, USB, BHCSY Keyboard, USB, Hebrew/Israel Keyboard, USB, North Africa/Saudi Arabia Keyboard, USB, Czeck/Slovakia Keyboard, USB, International English Display cable (LVDS) Hard drive cable Optical drive cable - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 48
7 Removal and Replacement Procedures All-in One (AIO) Chassis The following sections provide information about from the back of the computer. 5. Place the computer face down on a soft flat surface. HP recommends that you set down a blanket, towel, or other soft cloth to protect the screen surface - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 49
Rear Cover Description Rear cover Spare part number 709839-001 Remove the main rear cover to access internal components. The cover is secured by two captive Phillips screws. To remove the rear cover: 1. Prepare the computer for disassembly (see Preparing to Disassemble the Computer on page 40). 2. - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 50
screws that secure the stand to the cover. 5. Position the rear cover with the stand facing upward. 42 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 51
6. Slide the stand bracket through the slot in the rear cover, and then remove the stand from the rear cover. To replace the stand, reverse the removal procedures. Stand 43 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 52
to Disassemble the Computer on page 40). 2. Remove the rear cover (see Rear Cover on page 41). 44 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 53
3. Lift the cover off the computer. To replace the rear cover, reverse the removal procedures. Memory Cover 45 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 54
support, you can populate the system board with up to 8 GB of memory. For proper system operation, the SODIMMs must be: ● industry-standard 204-pin ● unbuffered non-ECC PC3-10600 DDR3-1600 MHz-compliant ● 1.5 volt DDR3-SDRAM SODIMMs 46 Chapter 7 Removal and Replacement Procedures All-in One (AIO - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 55
-ECC memory technologies ● single-sided and double-sided SODIMMS ● SODIMMs constructed with x8 and x16 devices; SODIMMs constructed with x4 SDRAM are not supported NOTE: The system will not operate properly if you install unsupported SODIMMs. There are two memory sockets on the system board located - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 56
41). 3. Remove the memory cover (see Memory Cover on page 44). 4. To release the battery from its holder, squeeze the metal clamp that extends above one edge of the battery. When the battery pops up, lift it out (1). 48 Chapter 7 Removal and Replacement Procedures All-in - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 57
5. To insert the new battery, slide one edge of the replacement battery under the holder's lip with the positive side up. Push the other edge down until the clamp snaps over the other edge of the battery (2). Figure 7-1 Removing and Replacing a coin cell battery RTC Battery 49 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 58
HP SuperMulti DVD Writer Drive (includes bezel) Optical drive bracket Spare part number 657958-001 671558-001 The optical drive is located on the left side of the computer (viewed from behind). It is secured with one computer. 50 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 59
4. Use the bracket to push the drive out of the bay, and then slide the drive out of the computer (2). 5. If you need to remove the bracket from the optical drive, remove the two Phillips screws that secure the bracket to the drive, and then remove the bracket from the drive. To install an optical - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 60
drive is located on the left side of the computer (viewed from behind). The drive is secured with one captive screw and is housed in a removable cage. 1. Prepare the computer for disassembly (see Preparing to the computer (1). 52 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 61
not broken or missing before installing the hard drive. Replacement grommets are available using spare part number 709840-001. Attach hard drive conductive tape to one screw hole on each side of the hard drive cage. Conductive tape is available using spare part number 709841-001. Hard Drive 53 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 62
not to damage the cables when disconnecting them from the board. Do not pull on the wires. 54 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 63
4. Remove the two screws (2) that secure the board to the computer. 5. Lift the converter board from the computer. To install the converter board, reverse the removal procedures. Multiple display panels are available for this computer. The panels use the same converter board spare part. You must - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 64
are located at the bottom of the computer. Two separate speakers are each secured by two screws. One cables connects both speakers to the system board. The speakers are also wired to each other with a speaker to the computer. 56 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 65
4. Disconnect the speaker cable (2) from the system board. 5. Remove the speakers from the computer. To install the speakers, reverse the removal procedures. NOTE: The speakers are connected together by a connector. Speakers 57 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 66
. It is housed in a bracket that is secured with two Torx screws. The webcam board is secured to the bracket with two screws and has one connector. To remove the webcam module: 1. Prepare the computer for disassembly (see Preparing to Disassemble the Computer on page 40). 2. Remove the rear cover - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 67
3. Remove the Torx screw (1) that secures the module to the computer, and lift the module from the computer as far as the cable allows (2). 4. Disconnect the cable from the module, and then remove the module from the computer. Webcam Module 59 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 68
5. Remove the webcam from the bracket by removing the two Phillips screws that secure it to the bracket and then removing the webcam from the bracket. To install a webcam module, reverse the removal procedures. 60 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 69
System Board Cover The system board cover protects the system board. It is secured with two screws. To remove the system board cover: 1. Prepare the computer for disassembly (see Preparing to Disassemble the Computer on page 40). 2. Remove the rear cover (see Rear Cover on page 41). System Board - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 70
3. Remove the two Torx screws that secure the cover to the computer. 4. Lift the cover off the computer. To install the system board cover, reverse the removal procedures. 62 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 71
Fan Description Fan Spare part number 671582-001 The fan is located in the middle of the computer. It is secured with three screws. To remove the fan: 1. Prepare the computer for disassembly (see Preparing to Disassemble the Computer on page 40). 2. Remove the rear cover (see Rear Cover on page - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 72
5. Disconnect the fan cable (2) from the system board connector. 6. Lift the fan and remove it from the computer (3). To install the fan, reverse the removal procedures. 64 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 73
Heat sink/thermal module Description Heat sink/thermal module Spare part number 709832-001 The heat sink is secured with four captive Torx screws and one non-captive Torx screw. To remove the heat sink: 1. Prepare the computer for disassembly (see Preparing to Disassemble the Computer on page 40 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 74
sink, reverse the removal procedures. NOTE: Tighten the four captive heat sink screws in an alternating pattern. 66 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 75
Processor Description Intel Core i3 3240 processor, 3.4 GHz Intel Core i3 3225 processor, 3.3 GHz Intel Core i3 3220 processor, 3.3 GHz Intel Core i3 3210 processor, 3.2 GHz Intel Core i3 2130 processor, 3.4 GHz Intel Core i3 2120 processor, 3.3 GHz Intel Pentium Dual-Core G2130 processor, 3.2 GHz - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 76
latest version of the BIOS is being used on the computer. The latest system BIOS can be found on the Web at: http://h18000.www1.hp.com/support/files. 68 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 77
Drive Cables and Connector Description Optical drive connector cable Hard drive connector cable Spare part number 709827-001 709826-001 Both the optical drive connector and the hard drive connectors are secured with two screws and have two cables that connect to the system board. The optical drive - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 78
9. Remove the connector from the computer. To install the drive connectors, reverse the removal procedures. 70 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 79
WLAN Module Description Ralink RT5390R 802.11bgn 1x1 Wi-Fi Adapter (WLAN module) The WLAN module is located on the bottom left of the system board. Spare part number 701396-001 To remove the WLAN module: 1. Prepare the computer for disassembly (see Preparing to Disassemble the Computer on page 40 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 80
4. Disconnect the antenna cables from the module. 5. Remove the Phillips screws that secure the module to the system board. 72 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 81
6. Lift the module to a 45-degree angle, and then pull it away to remove it from the socket. To install the WLAN module, reverse the removal procedures. NOTE: WLAN modules are designed with a notch to prevent incorrect insertion. When connecting the antenna cables to the WLAN module, match the cable - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 82
(Webcam Module on page 58). 9. Disconnect all cables from the system board, noting their location for reinstallation. 74 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 83
10. Remove the nine screws (circled in image) that secure the system board to the computer. 11. Lift the system board straight up and out of the computer. To install the system board, reverse the removal procedures. Note the thermal pad locations and replace any that are damaged. System Board 75 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 84
76 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 85
Front Bezel Description Front bezel Spare part number 709846-001 The front bezel is located on the front of the computer and is secured to the display panel bracket with 11 screws and 10 tabs. You can remove the bezel without removing most of the main computer components, which the following - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 86
6. Lift the computer from the bezel, removing lifting the tabs as necessary to remove it. To install the front bezel, reverse the removal procedures. 78 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 87
Display Panel Description Display panel, WLED, 18.5-inch, non-ZBD, 200 nits-Samsung Display panel, WLED, 18.5-inch, non-ZBD, 200 nits-CMI Display panel, WLED, 18.5-inch, non-ZBD, 200 nits-LG Spare part number 709833-001 709835-001 709834-001 The display panel is secured to the display bracket with - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 88
panel. 9. Lift the bracket assembly off the display panel. To install a display panel, reverse the removal procedures. 80 Chapter 7 Removal and Replacement Procedures All-in One (AIO) Chassis - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 89
Multiple display panels are available for this computer. The panels use the same converter board spare part. You must position the jumpers on the converter board based on the display panel installed. Please refer to the table on the base pan near the converter board for the appropriate jumper - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 90
, refer to the Safety & Regulatory Information guide. Before You Call for Technical Support If you are having problems with the computer, try the appropriate solutions below to try to isolate the exact problem before calling for technical support. ● Run the HP diagnostic tool. ● Run the hard drive - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 91
HP support, use HP Instant Support Professional Edition's online chat feature. Access HP Instant Support Professional Edition at: http://www.hp.com/ go/ispe. Access the Business Support Center (BSC) at http://www.hp.com/go/bizsupport for the latest online support information, software and drivers - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 92
and play expansion board or other option. See Solving Hardware Installation Problems on page 107 for instructions. ● Be sure that all the needed device drivers have been installed. For example, if you are using a printer, you need a driver for that model printer. ● Remove all bootable media (CD/DVD - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 93
Control Panel (Computer Setup can also be used to update the RTC date and time). If the problem persists, replace the RTC battery. See the Removal and Replacement section for instructions on installing a new battery, or contact an authorized dealer or reseller for RTC battery replacement. To access - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 94
using Computer Setup. In case of forgotten password, power loss, or computer malfunction, you must manually disable the Smart Cover lock . A key to unlock the Smart Cover Lock is not available from HP. Keys are typically available from a hardware store. Poor performance. Cause Processor is too hot - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 95
Table A-1 Solving General Problems (continued) Poor performance. Cause Solution Virus resident on the hard drive. Run virus protection program. Too many application. 2. Add more memory. 3. Upgrade the graphics solution. Cause unknown. Restart the computer. Solving General Problems 87 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 96
set to the appropriate voltage. Proper voltage setting depends on your region. 2. Remove the expansion cards one at a time until the 5V_aux light on the system board turns on. 3. Replace the system board power supply. 6. Replace the system board. 88 Appendix A Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 97
are listed in the following table. Table A-2 Solving Power Problems Power supply shuts down intermittently. Cause If equipped with a voltage selector, voltage selector switch on rear of onto the system board header. 3. If fan a plugged in and not spinning, replace it. Solving Power Problems 89 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 98
. 3. Check if a device is causing the problem by removing ALL attached devices (such as hard then power off and replace one device at a time and repeat this the failure. Continue adding devices one at a time to ensure all is being used on the All-in One or USDT. The power supply adapter must - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 99
, check to see if the device is listed within Computer Setup. If it is listed, the probable cause is a driver problem. If it is not listed, the probable cause is a hardware problem. If this is a newly installed drive, run the Computer Setup utility and try adding a POST delay under Advanced > Power - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 100
on page 129 to determine possible causes for the blinking red and beep codes. See the Worldwide Limited Warranty for terms and conditions. 92 Appendix A Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 101
the power button for four or more seconds to turn off the power. To restart the computer, press the power button again. Solving Hard Drive Problems 93 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 102
Problems Table A-4 Solving Media Card Reader Problems and deleting from an SD/ Memory Stick/PRO card. If using an SD card, supported. Ensure that the card is inserted properly with the gold contact on the correct side. The green LED will light if inserted properly. 94 Appendix A Troubleshooting - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 103
time to recognize the device if the reader was just installed into the computer and you are turning the PC on for the first time. Wait a few seconds so that the operating system can recognize the reader menu. 3. Change the boot sequence in F10 Computer Setup. Solving Media Card Reader Problems 95 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 104
monitor and to the common causes and solutions listed in the following table. Table A-5 Solving Display Problems Blank screen (no video). Cause Solution Monitor is not turned on and the monitor light is on the onscreen controls and settings. 96 Appendix A Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 105
error. 1. Reseat DIMMs. Power on the system. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Blank screen and the power card (if applicable) or video connector and the monitor. Solving Display Problems 97 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 106
the correct graphics Install the video drivers included in the upgrade kit. drivers may not be loaded. Monitor monitor. Refer to the documentation that came with the monitor for instructions. Image is not centered. Cause Position may need adjustment. Solution A Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 107
what the monitor supports. Solution Restart the computer and enter Safe Mode. Change the settings to a supported setting then restart the . 2. Select Change PC Settings, select General, and then under Advanced startup, click Restart now. 3. Select Troubleshoot, select Advanced options, Problems 99 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 108
's on-screen display menu. the graphics card. 2. Manually synchronize the Clock and Clock Phase on- screen display appropriate monitor, and download either SP32347 or SP32202: http://www.hp.com/support Graphics card is not seated properly or is bad (some A Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 109
solutions listed in the following table. Table A-6 Solving Audio Problems Sound cuts in and out. Cause Processor resources are being is set to use a different audio device than speakers. Some graphics cards support audio over the DisplayPort connection (if applicable), so multiple audio devices may - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 110
driver or application software, reconfigure the software. jack or set the jack to its default value. There is no sound or sound volume is too low. Cause The application is set to use a different audio device than speakers. Solution Some graphics cards support A Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 111
the printer and to the common causes and solutions listed in the following table. Table A-7 Solving Printer Problems Printer will not print. Cause Printer is not turned on and online. The correct printer drivers for the application are not installed. If you are on a network, you may not have made - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 112
be overloaded. Solution Reconnect all cables. Reset the printer by turning it off for one minute, then turn it back on. Printer will not print. Cause The printer may be out of paper. Solution Check the paper tray and refill it if it is empty. 104 Appendix A Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 113
and solutions listed in the following table. Table A-8 Solving Keyboard Problems A wireless keyboard/mouse is not working correctly. Symptoms include lagging you may have to place the connectors farther apart using an external USB hub. Keyboard commands and typing are not recognized by the computer - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 114
Table A-9 Solving Mouse Problems Mouse does not respond to movement or is too slow. Cause Solution Mouse connector is not properly plugged the mouse and clean the internal components with a mouse cleaning kit available from most computer stores. 106 Appendix A Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 115
, use the Add Hardware Wizard and follow the instructions that appear on the screen. To open the Add before touching. Table A-10 Solving Hardware Installation Problems A new device is not recognized as part of applications, and then select Device Manager. USB ports on the computer are disabled in - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 116
specific problems. 3. If you still cannot resolve the issue, contact Customer Support. Power DIMMs. Power on the system. 2. Replace DIMMs one at a time to isolate the faulty module. DIMM4 3. Replace third-party memory with HP memory. 4. Replace the system board. Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 117
Solution Bad option card. 1. Check each option card by removing the cards one at time (if multiple cards), then power on the system to see if the process of debugging the network cabling. Table A-11 Solving Network Problems Wake-on-LAN feature is not functioning. Cause S5 Maximum Power Saving - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 118
list of applications, and then select Device Manager. Network driver is not properly loaded. Reinstall network drivers. System cannot autosense the network. Disable auto-sensing capabilities and force the system into the correct operating mode. 110 Appendix A Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 119
incorrect connector. There is a problem with the cable or a device service provider. Diagnostics passes, but the computer does not communicate with the network. Cause Solution Network drivers are not loaded, or driver parameters do not Make sure the network drivers are loaded and that the driver - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 120
drivers for your NIC. System setup utility reports unprogrammed EEPROM. Cause Unprogrammed EEPROM. Solution Contact an authorized service provider. Solving Memory Problems If you encounter memory problems that support ECC memory, HP does not support mixing Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 121
but LEDs continue flashing.) Cause Solution Memory is installed incorrectly or is bad. 1. Reseat DIMMs. Power on the system. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Solving Memory Problems 113 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 122
second pause. Cause Solution The current processor does not support a feature previously 1. Install a TXT (Trusted Execution Technology with the optional device. Table A-14 Solving CD-ROM and DVD Problems System will not boot from CD-ROM or DVD drive. Cause Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 123
, check to see if the device is listed within Computer Setup. If it is listed, the probable cause is a driver problem. If it is not listed, the probable cause is a hardware problem. If this is a newly installed drive, run the Computer Setup utility and try adding a POST delay under Advanced > Power - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 124
select Device Manager. 2. Restart the computer and let Windows detect the CD or DVD driver. Recording or copying CDs is difficult or impossible. Cause Wrong or poor quality media type brand of media. Quality varies widely between manufacturers. 116 Appendix A Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 125
, common causes and solutions are listed in the following table. Table A-15 Solving USB Flash Drive Problems USB flash drive is not seen as a drive letter in Windows. Cause Solution The drive letter after the last physical drive is not available. Change the - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 126
in Computer Setup. Run the Computer Setup utility and ensure that the USB ports are set to Enabled in Security > USB Security. Solving Internet Access Problems If you encounter Internet access problems, consult your Internet Service Provider (ISP) or refer to the common causes and solutions listed - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 127
You must log on to your ISP before some programs will start. Log on to your ISP and launch the desired program. Solving Internet Access Problems 119 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 128
drivers have been installed. ● If you have installed an operating system other than the factory-installed operating system, check to be sure it is supported on the system. If you encounter software problems Limited Warranty for terms and conditions. 120 Appendix A Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 129
to fix problems that might prevent Windows from starting correctly. To access Automatic Repair: 1. Press the Windows logo + l to open the Settings charm. 2. Select Change PC Settings, select General, and then under Advanced startup, click Restart now. 3. Select Troubleshoot, select Advanced - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 130
to an authorized reseller, dealer, or service provider for service, remember to provide the setup and power-on passwords if they are set. Refer to the number listed in the warranty or in the Support Telephone Numbers guide for technical assistance. 122 Appendix A Troubleshooting Without Diagnostics - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 131
either schedule support or provide replacement parts. How to access and run HP PC Hardware Diagnostics You can run the diagnostics from one of three connected USB drive (to download the diagnostics tools to a USB drive, see the instructions in Downloading HP PC Hardware Diagnostics to a USB device - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 132
Downloading HP PC Hardware Diagnostics to a USB device 1. Go to http://www.hp.com. 2. Click the Support & Drivers link. 3. Select the Drivers & Software tab. 4. Enter the product name in the text box and click Search. 5. Select your specific computer model. 6. Select your operating system. 7. In the - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 133
of displayed options. NOTE: For detailed instructions on various backup and restore options, perform a search for these topics in Help and Support. From the Start screen, type h, and then select Help and Support. In case of system instability, HP recommends that you print the recovery procedures - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 134
options. 2. Follow the on-screen instructions to set up your backup, create Windows Automatic Repair to fix problems that might prevent Windows from Support. 1. If possible, back up all personal files. 2. If possible, check for the presence of the HP system media and the Driver Recovery media (both - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 135
Troubleshoot, select Advanced Options, and then select Automatic Repair. 5. Follow the on-screen instructions system and HP programs and drivers that were installed hp.com/support, select your country or region, and follow the on-screen instructions. You can also order the media by calling support - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 136
, press any keyboard key. 4. Follow the on-screen instructions. After the repair is completed: 1. Remove the Windows 8 operating system media, and then insert the Driver Recovery media. 2. Install the Hardware Enabling Drivers first, and then install Recommended Applications. 128 Appendix C Backup - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 137
-Test (POST) or computer restart, the probable source of the problem, and steps you can take to resolve the error condition. POST messages. If a POST error occurs, the screen will display the error message. To manually switch to the POST Messages Enabled mode during POST, press any key (except F10, - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 138
date and time under Control Panel (Computer Setup can also be used). If the problem persists, replace the RTC battery. 164-MemorySize Error Memory amount has changed since the third-party memory has been added, test using HP-only memory. 4. Verify proper memory module type. 130 Appendix D - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 139
1. If additional memory was recently ECC memory error correction. added, remove it to see if the problem remains. 2. Check product documentation for memory support information. Keyboard failure. 1. Reconnect keyboard with computer turned off. 2. Check connector for bent or missing pins - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 140
PCI Express slot failed to initialize There is an incompatibility/problem with this device and the system or PCI Express Link could (Available at http://www.hp.com/support.) 3. Back up contents and replace hard drive. 1801-Microcode Patch Error Processor is not supported by ROM BIOS. 1. Upgrade - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 141
execution SODIMM1 is not installed. Make sure there is a memory module in the SODIMM1 socket and that it is properly seated. 2212-USB Key Provisioning failure writing to USB device used for USB key provisioning device will not allow BIOS to update provision file properly. 1. Try a different - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 142
version. Otherwise, update the ME firmware version. 3. If the error still persists, replace the system board. 2220-USB Key Provisioning file has mismatch version Provisioning file contained on the USB key is not a valid version for the current ME firmware. 1. Reboot the computer. 2. If the error - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 143
Control panel message Network Server Mode Active and No Keyboard Attached Parity Check 2 Description Keyboard failure while Network Server Mode enabled. Parity RAM failure or a PCI/PCIe device is asserting a SERR#. Recommended action 1. Reconnect keyboard with computer turned off. 2. Check - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 144
the connector on the system board. 2. Check if a device is causing the problem by removing ALL attached devices (such as hard, diskette, or optical drives, Reseat DIMMs. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 145
after fifth iteration but LEDs continue until problem is solved. Red Power LED flashes 11 Bad option card. The current processor does not support a feature previously enabled on this system. 1. . 1. Check each option card by removing the card (one at a time if multiple cards), then power on the - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 146
Red Power LED flashes twelve iteration but LEDs continue until problem is solved. System does not power on and LEDs are If it is turned on, then replace the power button harness. If the problem persists, replace the system board. 5. If the 5V_aux light on the system board is not turned on, - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 147
E Power Cord Set Requirements The power supplies on some computers have external power switches. The voltage select switch feature on the computer permits it to operate from any line voltage between 100-120 or 220-240 volts AC. Power supplies on those computers that do not have external power - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 148
Country-Specific Requirements Additional requirements specific to a country are shown in parentheses and explained below. Country Accrediting Agency Country Accrediting Agency Australia (1) EANSW Italy (1) IMQ Austria (1) OVE Japan (3) METI Belgium (1) CEBC Norway (1) NEMKO Canada - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 149
F Specifications All-in One Model Desktop Dimensions Width Depth Height Approximate Weight (includes stand) Temperature Range Operating Nonoperating Relative Humidity (noncondensing) Operating 35°C -30° to 66°C 15-80% at 26°C 0 - 2000 m 4,572 m 100-240 V 50-60 Hz < 90 W 30 W All-in One Model 141 - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 150
discharge 9 keyboard cleaning 13 keyboard keys 13 CD-ROM or DVD problems 114 cleaning computer 12 mouse 14 safety precautions 12 components front 2, cable spare part number 31, 36 country power cord set requirements 140 Customer Support 82, 122 D display cable, spare part number 31, 39 display panel - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 151
removal and replacement processor 67 removal and replacement procedures 69 All-in One chassis 40 converter board 54 display panel 79 fan 63 front bezel characteristics 7 screws, correct size 14 service considerations 14 software problems 120 servicing computer 14 spare part number tamper-resistent - HP Pro All-in-One 3520 | Maintenance & Service Guide HP Pro 3520 All-in-One - Page 152
webcam module removing 58 spare part number 32 Windows 8 operating system DVD 127 WLAN module removing 71 spare part number 32 144 Index
Maintenance & Service Guide
HP Pro 3520 All-in-One Business PC