Dell OptiPlex 7470 All In One OptiPlex 7470 All-in-One Service Manual
Dell OptiPlex 7470 All In One Manual
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- Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 1
Dell OptiPlex 7470 All-in-One Service Manual Regulatory Model: W19C Regulatory Type: W19C001 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 2
and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2018 - 2019 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 3
Contents 1 Working on your computer...6 Safety instructions...6 Turning off your computer - Windows 10...6 Before working inside your computer...7 After working inside your computer...7 2 Technology and components...8 DDR4...8 USB features...10 HDMI...12 3 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 4
Solid State Drive -2230...35 Removing the 2230 SSD card...35 Installing the 2230 SSD card...36 WLAN card...37 Removing the WLAN card...37 Installing the WLAN card...39 System fan...41 Removing the system fan...41 Installing the system fan...42 Heat sink...43 Removing the heat sink - dGPU...43 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 5
the display cable...88 Installing the display cable...89 Middle frame...90 Removing the middle frame...90 Installing the middle frame...92 5 Troubleshooting your computer 95 Enhanced Pre-Boot System Assessment - ePSA diagnostics 95 Running the ePSA Diagnostics...95 Diagnostics...95 LCD built in - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - 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 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 7
turning on your computer. CAUTION: To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not use batteries designed for other Dell computers. 1. Connect any external devices, such as a port replicator or media base, and replace any cards, such as an - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 8
which requires 1.5 volts of electrical power to operate. DDR4 also supports a new, deep power-down mode that allows the host device to go BG) VREF inputs tCK - DLL Enabled tCK - DLL Disabled Read Latency Write Latency DQ Driver (ALT) DQ Bus RTT Values (in &Omega) RTT not allowed ODT Modes Yes ( - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 9
Feature/Option Multi-Purpose Register DIMM Types DIMM Pins RAS DDR3 DDR4 DDR 4 Advantages Four Registers - 1 Defined, 3 RFU RDIMM, LRDIMM, UDIMM, SODIMM 240 (R, LR, U); 204 (SODIMM) ECC Four Registers - 3 Defined, 1 RFU RDIMM, LRDIMM, UDIMM, SODIMM 288 (R, LR, U); 260 (SODIMM) CRC, Parity, - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 10
connection between host computers and peripheral devices like mice, keyboards, external drivers, and printers. Let's take a quick look on the USB • New power management features • Full-duplex data transfers and support for new transfer types • Backward USB 2.0 compatibility • New connectors - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 11
USB 3.1 Gen 1 products: • External Desktop USB 3.0/USB 3.1 Gen 1 Hard Drives as before. Five new connections to carry drivers for USB 3.0/USB 3.1 Gen 1 controllers. Microsoft announced that Windows 7 would have USB 3.1 Gen 1 support, perhaps not on its immediate release, but in a subsequent Service - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 12
Cinema systems used in many commercial movie theaters • HDMI Micro Connector - A new, smaller connector for phones and other portable devices, supporting video resolutions up to 1080p • Automotive Connection System - New cables and connectors for automotive video systems, designed to meet the unique - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 13
3 Major components of your system 1. Stand 2. Hard drive 3. Camera assembly cover 4. Heat sink 5. System fan 6. Speakers 7. Memory module 8. Input and Output bracket 9. Input and Output board shield 10. Input and Output board 11. Headset port 12. Middle frame 13. Microphone 14. Display assembly 15. - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 14
21. System board 22. Processor 23. Pop-Up Camera 24. System board shield 25. DIMM door 26. Base cover 27. Back cover NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 15
cable • Middle frame Recommended tools The procedures in this document require the following tools: • Phillips #0 screwdriver • Phillips #1 screwdriver • Plastic scribe NOTE: The #0 screw driver is for screws 0-1 and the #1 screw driver is for screws 2-4 Removing and Installing components 15 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 16
Screw size list Table 3. OptiPlex 7470 All-in-One Component Cable cover Screw type M3x9 System board shield M3x5 Solid-state drive/Intel Optane card WLAN card shield M2x2.5 M2x2.5 WLAN card M2x2.5 System - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 17
.5 Input and Output board shield M3x5 Input and Output board M3x5 Headset port M3x5 Antennas Display panel M2x2.5 M3x5 Middle frame M3x5 System board layout OptiPlex 7470 All-in-One Quantity 2 2 2 1 2 11 15 Screw image Removing and Installing components 17 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 18
1. PSU power connector 3. Memory slots 5. Webcam connector 7. System fan connector 9. Service mode jumper/Password clear jumper/CMOS clear jumper 11. SPI header 13. SIO_power connector 15. INT_SPK connector 17. Coin cell battery 19. LVDS connector 21. - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 19
Removing the rubber feet 1. Follow the procedure in Before working inside your computer. 2. Remove the Stand. 3. Pry the rubber feet at the bottom edge from the display assembly base and pull it out. Installing the rubber feet 1. Align the rubber feet with the slots on the display assembly base and - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 20
2. Install the Stand. 3. Follow the procedure in After working inside your computer Cable cover - optional Removing the cable cover 1. Follow the procedure in Before working inside your computer. 2. Remove the Stand. 3. Remove the single (M3x9) screw that secures the cable cover to the base cover - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 21
Installing the cable cover 1. Place the cable cover on the base cover [1]. 2. Replace the single (M3x9) screw the secures the cable cover to the base cover [2]. Removing and Installing components 21 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 22
in After working inside your computer Stand Removing the stand The following procedure applies only to systems that are shipped with a Basic All-in-One stand: 1. Follow the procedure in Before working inside your computer. 2. To avoid damaging the display, place the system on a flat, soft, and clean - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 23
Installing the stand The following procedure applies only to systems that are shipped with a Basic All-in-One stand: 1. To install the stand : a) Align the tabs on the stand [1]. b) Snap the stand into place on the back cover [2]. Removing and Installing components 23 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 24
2. Follow the procedure in After working inside your computer Back cover Removing the back cover 1. Follow the procedure in Before working inside your computer. 2. Remove the Stand. 3. Press and hold the tab on the back cover to release it from the latch on the system-board shield and slide the back - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 25
4. Install the Stand. 5. Follow the procedure in After working inside your computer. Hard drive Removing the hard drive assembly 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: a) Stand b) Back cover 3. To remove the hard drive assembly: a) Press - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 26
4. To remove the hard drive bracket: a) Pry the tabs on hard drive bracket from its slots on the hard drive [1]. b) Slide the hard drive, and lift it away from the bracket [2]. Installing the hard drive assembly 1. To install the hard drive bracket: a) Align the tabs on the hard drive bracket with - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 27
2. To install the hard drive assembly: a) Place the hard drive assembly into the slot [1]. b) Slide it to lock the blue tab on the hard drive assembly to the metal tab on the display assembly base [2]. 3. Install the following components: a) Back cover b) Stand 4. Follow the procedure in After - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 28
a) Stand b) Back cover 3. To locate the memory module on the system board, pry open the DIMM door on the system board shield [1]. 4. Pry the retention clips at each end of the memory module slot until the memory module pops up [2]. 5. Lift the memory module from the memory module slot [3]. NOTE: - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 29
4. Install the following components: a) Back cover b) Stand 5. Follow the procedure in After working inside your computer. System board shield Removing the system board shield 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: a) Stand b) Back cover - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 30
Installing the system board shield 1. Place the system board shield on system board. 2. Align the slots on the system board shield with the slots on the display assembly base [1]. 3. Replace the five screws (M3x5) that secure the system-board shield to the display assembly base [2]. 30 Removing - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 31
4. Install the following components: a) Back cover b) Stand 5. Follow the procedure in After working inside your computer. Intel Optane Removing the Intel Optane card 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: a) Stand b) Back cover c) System - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 32
Installing the Intel Optane card 1. Replace the thermal pad on the rectangular outline marked on the system board [1]. 2. Insert the Intel Optane card into the card slot on the system board [2]. 3. Replace the screw (M2x2.5) that secures the Intel Optane card to the system board [3]. NOTE: Intel - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 33
4. Install the following components: a) System board shield b) Back cover c) Stand 5. Follow the procedure in After working inside your computer. Solid State Drive -SSD Removing the SSD card 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: a) Stand - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 34
Installing the SSD card 1. Replace the thermal pad on the rectangular outline marked on the system board [1]. NOTE: M.2 PCIe SSD with capacity over 512G (512G/1TB/2TB) must be installed with a thermal pad. M.2 SATA SSD and M.2 PCIe SSD with 128G and 256G do not require a thermal pad. 2. Insert the - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 35
4. Install the following components: a) System board shield b) Back cover c) Stand 5. Follow the procedure in After working inside your computer. Solid State Drive -2230 Removing the 2230 SSD card 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: a) - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 36
Installing the 2230 SSD card 1. Replace the thermal pad on the rectangular outline marked on the system board [1]. 2. Insert the SSD card into the card slot on the system board [2]. 3. Replace the screw (M2x2.5) that secures the SSD card to the system board [3]. 36 Removing and Installing - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 37
4. Install the following components: a) System board shield b) Back cover c) Stand 5. Follow the procedure in After working inside your computer. WLAN card Removing the WLAN card 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: a) Stand b) Back - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 38
4. To remove the WLAN card: a) Remove the screw (M2x2.5) that secures the WLAN card bracket and the WLAN to the system board [1]. b) Slide and lift the WLANs card bracket off the WLAN card [2]. c) Disconnect the antenna cables from the WLAN card [3]. d) Slide and remove the WLAN card out of the WLAN - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 39
Installing the WLAN card 1. To install the WLAN card: a) Align and replace the WLAN card into the WLAN card slot [1]. b) Connect the antenna cables to the WLAN card [2]. c) Replace the WLAN card bracket on the WLAN card [3]. d) Replace the screw (M2x2.5) that secures the WLAN card bracket and the - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 40
2. To install the WLAN card shield: a) Align the screw slot on the WLAN card shield with the screw slot on the system board and place the WLAN card shield on the system board [1]. b) Replace the two screws (M2x2.5) that secure the WLAN card shield to the system board [2] c) Reroute the antenna cable - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 41
3. Install the following components: a) system board shield b) Back cover c) Stand 4. Follow the procedure in After working inside your computer. System fan Removing the system fan 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: a) Stand b) Back - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 42
Installing the system fan 1. Align the screw slots on the system fan with the screw slots on the display assembly base [1]. 2. Replace the three screws (M3x5) that secure the system fan to the display assembly base [2]. 3. Connect the system fan cable to the socket on the system board [3]. 42 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 43
4. Install the following components: a) System board shield b) Back cover c) Stand 5. Follow the procedure in After working inside your computer. Heat sink The following topics lists heat sink removing and installing steps for unified memory architecture (UMA) and discrete graphics processing unit ( - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 44
Installing the heat sink - dGPU 1. Align the captive screws on the heat sink with the screw slots on the system board and the display assembly base [1]. 2. In the sequential order (as indicated on the heat sink), tighten the captive screws that secure the heat sink to the system board and display - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 45
a) System fan b) System board shield c) Back cover d) Stand 4. Follow the procedure in After working inside your computer. Removing the heat sink - UMA 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: a) Stand b) Back cover c) System board shield d) - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 46
3. Install the following components: a) System fan b) System board shield c) Back cover d) Stand 4. Follow the procedure in After working inside your computer. Pop-Up Camera Removing the pop-up camera 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 47
4. To remove the camera bezel: a) Press the top of the pop-up camera assembly to extend the pop-up camera [1]. b) Remove the three screws (M3x5) that secure the bezel to the pop-up camera assembly [2]. 5. To remove the pop-up camera module: a) Lift the pop-up camera bezel off the pop-up camera - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 48
Installing the pop-up camera 1. Follow the procedure in After working inside your computer. 2. To replace the camera module: a) Replace the camera module along with the camera cable in the slot on the pop-up camera assembly [1]. b) Align the screw slots on the pop-up camera bezel with the screw - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 49
4. To replace the camera assembly: a) Align and place the pop-up camera assembly on the display panel base and route the camera cable through to the routing channel [1]. b) Replace the two screws (M3x5) that secure the pop-up camera assembly to the middle frame [2]. c) Connect the camera cable to - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 50
Coin cell battery Removing the coin cell battery 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: a) Stand b) Back cover c) System board shield 3. Press the tab on the coin cell battery socket until the coin cell battery pops up [1]. 4. Lift the - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 51
3. Install the following components: a) System board shield b) Back cover c) Stand 4. Follow the procedure in After working inside your computer. Processor Removing the processor 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: a) Stand b) Back - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 52
triangle on the pin-1 corner on the processor socket. When the processor is properly seated, all four corners are aligned at the same height. If one or more corners of the processor are higher than the others, the processor is not seated properly. b) Close the processor shield by sliding it under - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 53
2. Install the following components: a) Heat sink b) System board shield c) Back cover d) Stand 3. Follow the procedure in After working inside your computer. NOTE: If the processor is replaced, use the thermal grease provided in the kit to ensure that thermal conductivity is achieved. Base cover - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 54
4. Pry and lift the base cover off the middle frame. 54 Removing and Installing components - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 55
Installing the base cover 1. Align and place the tabs on the base cover with the slots on the middle frame [1]. 2. Press the base cover down until it snaps into place on the middle frame [2]. 3. Replace the four screws (M3x5) that secure the base cover to the display assembly base. Removing and - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 56
4. Install the following components: a) System board shield b) Back cover c) Cable cover d) Stand 5. Follow the procedure in After working inside your computer. Power supply unit - PSU Removing the power supply unit -PSU 1. Follow the procedure in Before working inside your computer. 2. Remove the - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 57
4. To remove the PSU: a) Remove the single (M3x5) screw that secures the PSU to the display assembly base [1]. b) Slide the PSU, and lift it away from the chassis [2]. Removing and Installing components 57 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 58
Installing the power supply unit -PSU 1. To install the PSU: a) Align and slide the PSU, in to the slot on the display assembly base [1]. b) Replace the single screw (M3x5) that secures the PSU to the chassis [2]. 2. To install the PSU cable: a) Connect the power supply cable to the socket on the - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 59
3. Install the following components: a) Base cover b) System board shield c) Back cover d) Stand 4. Follow the procedure in After working inside your computer. Power supply unit fan - PSU fan Removing the power supply unit fan -PSU fan 1. Follow the procedure in Before working inside your computer. - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 60
Installing the power supply unit -PSU fan 1. To install the PSU fan: a) Align and place the PSU fan on the chassis [1]. b) Replace the two (M3x5) screws that secure the PSU fan to the display assembly base [2]. c) Connect the PSU fan cable to the socket on the system board [3]. d) Route the power - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 61
2. Install the following components: a) Base cover b) System board shield c) Back cover d) Stand 3. Follow the procedure in After working inside your computer. Input and Output bracket Removing the Input and Output bracket 1. Follow the procedure in Before working inside your computer. 2. Remove the - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 62
5. To remove the Input and Output (I/O) bracket: a) Remove the three (M3x5) screws that secure the I/O bracket to the display assembly base [1]. b) Lift the I/O bracket off the display assembly base [2]. 62 Removing and Installing components - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 63
Installing the Input and Output bracket 1. To install the Input and Output bracket (I/O) bracket: a) Align the slots on the Input and Output bracket (I/O) bracket with the ports on the system board [1]. b) Replace the three screws (M3x5) that secure the I/O bracket to the display assembly base [2]. - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 64
3. Install the following components: a) Base cover b) System board shield c) Back cover d) Stand 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 following components: - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 65
• PSU fan cable [1] • Power supply unit cable [2] • Backlight cable [3] • Camera cable [4] • SIO_signal,SIO power, INT_ speaker, and DMIC cables [1] • Power button board cable [2] • LVDS cable [3] Removing and Installing components 65 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 66
4. Remove the nine screws (M3x5) that secure the system board to the display assembly base [1]. 5. Lift the system board off the display assembly base [2]. 66 Removing and Installing components - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 67
Installing the system board 1. Align the screw slots on the system board with the screw slots on the display assembly base [1]. 2. Replace the nine screws (M3x5) that secure the system board to the display assembly base [2]. Removing and Installing components 67 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 68
3. Connect the following cables to the system board: • Camera cable [1] • Backlight cable [2] • Power supply unit cable [3] • PSU fan cable [4] 68 Removing and Installing components - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 69
• LVDS cable [1] • Power button board cable [2] • SIO_signal,SIO power,INT_ speaker, and DMIC cables [3] Removing and Installing components 69 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 70
4. Install the following components: a) I/O bracket b) Base cover c) Processor d) Heat sink e) System fan f) WLAN card g) SSD h) Intel Optane i) System board shield j) Memory k) Hard drive l) Back cover m) Stand 5. Follow the procedure in After working inside your computer Speakers Removing the - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 71
align the screw slots on the speakers with the screw slots on the display assembly base [1]. b) Route the speaker cable through the routing guides on the display assembly base [2]. c) Replace the six screws (M3x4+7.1) that secure the speakers to the display assembly base [3]. d) Connect the speaker - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 72
2. Install the following components: a) I/O bracket b) Base cover c) System board shield d) Back cover e) Stand 3. Follow the procedure in After working inside your computer. Power button board Removing the power button board 1. Follow the procedure in Before working inside your computer. 2. Remove - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 73
Installing the power button board 1. To install the speakers: a) Using the alignment post, place the power button board into its slot on the middle frame [1]. b) Replace the single screw (M3x5) that secures the power button board to the middle frame [2]. c) Slide the power button board cable under - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 74
the microphone and cable: a) Disconnect the microphone module cable from the system board [1]. b) Remove the microphone module cable from the routing guides on the display assembly base [2]. c) Remove the two screws (M2x2.5) that secure the microphone modules to the middle frame [3]. d) Lift the - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 75
the two screws (M2x2.5) that secure the microphone modules to the middle frame [2]. c) Route the microphone module cable through the routing guides on the display assembly base [3]. d) Connect the microphones module cable to the socket on the system board [4]. Removing and Installing components - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 76
2. Install the following components: a) PSU b) Speakers c) I/O bracket d) Base cover e) System board shield f) Back cover g) Stand 3. Follow the procedure in After working inside your computer. Input and Output board Removing the Input and Output board 1. Follow the procedure in Before working - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 77
base [3]. d) Lift the I/O board shield from the display assembly base [4]. 4. To remove the I/O board: a) Remove the headset port cable from the routing guide on the I/O board [1]. b) Remove the two screws (M3x5) that secure the I/O board to the display assembly base [2]. c) Lift the I/O board with - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 78
display assembly base [1]. b) Replace the two screws (M3x5) that secure the I/O board to the display assembly base [2]. c) Route the headset port cable through the routing guide on the I/O board [3]. 78 Removing and Installing components - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 79
I/O board shield to the display assembly base [2]. c) Route the headset port cable, I/O board cable, and I/O board power cable through the routing guides on the display assembly base [3]. d) Connect the I/O board cable, I/O board power cable, and headset port cable to the system board [4]. Removing - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 80
3. Install the following components: a) Hard drive b) Speakers c) I/O bracket d) Base cover e) System board shield f) Back cover g) Stand 4. Follow the procedure in After working inside your computer. Headset port Removing the headset port 1. Follow the procedure in Before working inside your - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 81
Installing the headset port 1. Slide the headset port into its slot on the middle frame and align the screw slot on the headset port to the screw slot on the display assembly base [1]. 2. Replace the single (M3x5) screw that secures the headset port to the display assembly base [2]. Removing and - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 82
3. Install the following components: a) I/O board b) Hard drive c) Speakers d) I/O bracket e) Base cover f) System board shield g) Back cover h) Stand 4. Follow the procedure in After working inside your computer. Antennas Removing the antennas 1. Follow the procedure in Before working inside your - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 83
3. To remove the antenna: a) Remove the antenna cables from the routing guides on the display assembly base [1]. b) Remove the two screws (M2x2.5) that secure the antenna modules (2) to the middle frame [2]. c) Carefully peel the tape that secures - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 84
2. Install the following components: a) PSU fan b) PSU c) I/O board d) WLAN card e) Speakers f) I/O bracket g) Base cover h) System board shield i) Back cover j) Stand 3. Follow the procedure in After working inside your computer. Display panel Removing the display panel 1. Follow the procedure in - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 85
i) System board j) PSU k) PSU fan l) Camera 3. Remove the display backlight cable from the routing guides on the display assembly base [1]. 4. Remove the 11 screws (M3x5) that secure the middle frame and display assembly base to the display panel [2]. NOTE: The - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 86
slide the display panel into the slot between the middle frame and the display assembly base [1]. 2. Route the touchscreen cable through the routing guide on the display assembly base. 3. Push the display backlight cable through the slots on the display assembly base [2]. 4. Push the display panel - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 87
(M3x5) screws that secure the display panel to the middle frame and display assembly base [1] . 7. Route the display backlit cable through the routing guides on the display assembly base [2] . NOTE: The screws that secure the middle frame and display assembly base to the display panel are silver in - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 88
8. Install the following components: a) Camera b) PSU fan c) PSU d) System board e) WLAN card f) Hard drive g) System fan h) I/O bracket i) Base cover j) System board shield k) Back cover l) Stand 9. Follow the procedure in After working inside your computer. Display cable Removing the display cable - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 89
d) System board shield e) WLAN card f) System fan g) Camera h) Base cover i) PSU j) PSU fan k) I/O bracket l) System board m) Speakers n) Power button board o) Microphones p) I/O board q) Headset port r) Antennas s) Display panel 3. To remove the display cable: a) Fold the securing tape inward [1]. - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 90
2. Install the following components: a) Display panel b) Antennas c) Headset port d) I/O board e) Microphones f) Power button board g) Speakers h) System board i) I/O bracket j) PSU fan k) PSU l) Base cover m) Camera n) System fan o) WLAN card p) System board shield q) Hard drive r) Back cover s) - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 91
2. Remove the following components: a) Stand b) Back cover c) Hard drive d) System board shield e) WLAN card f) System fan g) Camera h) Base cover i) PSU j) PSU fan k) I/O bracket l) System board m) Speakers n) Power button board o) Microphones p) I/O board q) Headset port r) Antennas s) Display - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 92
Installing the middle frame 1. Starting from the location shown, slide and align the middle frame to the slots on the display assembly base, and then snap the middle frame into place on the display assembly base [1,2]. 92 Removing and Installing components - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 93
2. Press and secure and the tabs on the middle frame to the slots on the display assembly base [1]. 3. Replace the 15 screws (M3x5) that secure the middle frame to the display assembly base [2]. Removing and Installing components 93 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 94
4. Install the following components: a) Display panel b) Antennas c) Headset port d) I/O board e) Microphones f) Power button board g) Speakers h) System board i) I/O bracket j) PSU fan k) PSU l) Base cover m) Camera n) System fan o) WLAN card p) System board shield q) Hard drive r) Back cover s) - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 95
successfully • View error messages that inform you of problems encountered during testing NOTE: Some tests for specific devices the computer. 2. As the computer boots, press the F12 key when the Dell logo is displayed. 3. In the boot menu screen, use Up/Down arrow Troubleshooting your computer 95 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 96
help the user troubleshoot problems with the system. Camera status light: Indicates whether the camera is in use. • Solid white - Camera is in use. • Off - Camera is not in use. LCD built in self test - BIST All-in-One (AIO) systems supports LCD BIST similar to any other Dell systems that have - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 97
Alternative display Invoking BIST To invoke the LCD BIST, turn on the system and press and hold the Display Built-in Self Test button plus the Power button together. Release the buttons when Red- Green-Blue-White-Blue pattern is displayed on screen. Troubleshooting your computer 97 - Dell OptiPlex 7470 All In One | OptiPlex 7470 All-in-One Service Manual - Page 98
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Dell OptiPlex 7470 All-in-One
Service Manual
Regulatory Model: W19C
Regulatory Type: W19C001