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Dell W17C Service Manual

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Dell OptiPlex 7770 All-in-One
Service Manual
Regulatory Model: W17C
Regulatory Type: W17C001

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Summary of Contents for Dell W17C

  • Page 1 Dell OptiPlex 7770 All-in-One Service Manual Regulatory Model: W17C Regulatory Type: W17C001...
  • Page 2 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 be trademarks of their respective owners.

  • Page 3: Table Of Contents

    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 Removing and Installing components....................
  • Page 4 Installing the Intel Optane card............................ 34 WLAN card...................................35 Removing the WLAN card............................35 Installing the WLAN card.............................. 37 System fan................................... 39 Removing the system fan.............................39 Installing the system fan............................... 40 Heat sink....................................41 Removing the heat sink - dGPU...........................41 Installing the heat sink - dGPU............................ 42 Removing the heat sink - UMA............................43 Installing the heat sink - UMA............................
  • Page 5 Removing the middle frame............................88 Installing the middle frame............................90 4 Troubleshooting your computer....................93 Enhanced Pre-Boot System Assessment — ePSA diagnostics................... 93 Running the ePSA Diagnostics............................ 93 Diagnostics................................... 93 LCD built in self test - BIST..............................94 5 Getting help..........................96 Contacting Dell..................................96 Contents...

  • Page 6: Working On Your Computer

    Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

  • Page 7: Before Working Inside 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 ExpressCard.

  • Page 8: Technology And Components

    Technology and components This chapter details the technology and components available in the system. Topics: • DDR4 • USB features • HDMI DDR4 DDR4 (double data rate fourth generation) memory is a higher-speed successor to the DDR2 and DDR3 technologies and allows up to 512 GB in capacity, compared to the DDR3's maximum capacity of 128 GB per DIMM.
  • Page 9 Feature/Option DDR3 DDR4 DDR 4 Advantages Multi-Purpose Register Four Registers – 1 Defined, 3 Four Registers – 3 Defined, 1 Provides Additional Specialty Readout DIMM Types RDIMM, LRDIMM, UDIMM, RDIMM, LRDIMM, UDIMM, SODIMM SODIMM DIMM Pins 240 (R, LR, U); 204 (SODIMM) 288 (R, LR, U);...

  • Page 10: Usb Features

    USB features Universal Serial Bus, or USB, was introduced in 1996. It dramatically simplified the connection between host computers and peripheral devices like mice, keyboards, external drivers, and printers. Let's take a quick look on the USB evolution referencing to the table below. Table 2.
  • Page 11 With today's ever increasing demands placed on data transfers with high-definition video content, terabyte storage devices, high megapixel count digital cameras etc., USB 2.0 may not be fast enough. Furthermore, no USB 2.0 connection could ever come close to the 480Mbps theoretical maximum throughput, making data transfer at around 320Mbps (40MB/s) —...

  • Page 12: Hdmi

    HDMI This topic explains the HDMI 1.4/ 2.0 and its features along with the advantages. HDMI (High-Definition Multimedia Interface) is an industry-supported, uncompressed, all-digital audio/video interface. HDMI provides an interface between any compatible digital audio/video source, such as a DVD player, or A/V receiver and a compatible digital audio and/or video monitor, such as a digital TV (DTV).

  • Page 13: Removing And Installing Components

    Removing and Installing components Topics: • Recommended tools • Screw size list • System board layout • Rubber feet • Cable cover - optional • Stand • Back cover • Hard drive • Solid State Drive -SSD • Solid State Drive -2230 •...

  • Page 14: Screw Size List

    Screw size list Table 3. OptiPlex 7770 All-in-One Component Screw type Quantity Screw image Cable cover M3x9 System board shield M3x5 Solid-state drive/Intel Optane M2x2.5 card WLAN card shield M2x2.5 WLAN card M2x2.5 System Fan M3x5 Pop-up camera assembly M3x5 Pop-up camera bezel M3x5 Pop-up camera assembly module M3x5...

  • Page 15: System Board Layout

    Component Screw type Quantity Screw image Power button board M3x5 Microphones (4 modules) M2x2.5 Input and Output board shield M3x5 Input and Output board M2.5x3.5 Headset port M3x5 Antennas M2x2.5 Display panel M3x5 Middle frame M3x5 System board layout OptiPlex 7770 All-in-One Removing and Installing components...
  • Page 16 1. PSU power connector 2. Processor 3. Memory slots 4. Back light connector 5. Webcam connector 6. M.2 PCIe/SATA slot 7. System fan connector 8. LPC_Debug 9. Service mode jumper/Password clear jumper/CMOS clear jumper 10. SATA HDD connector 11. SPI header 12.

  • Page 17: Rubber Feet

    22. eDP cable connector 23. Touch cable connector Rubber feet 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.

  • Page 18: Cable Cover - Optional

    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 [1]. 4.

  • Page 19: Installing The Cable Cover

    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...

  • Page 20: Stand

    3. Install the Stand. 4. Follow the procedure in After working inside your computer Stand Removing the stand The following procedure applies only to systems that are shipped with a Height adjustable stand (HAS) stand : 1. Follow the procedure in Before working inside your computer.

  • Page 21: Installing The Stand

    Installing the stand The following procedure applies only to systems that are shipped with a Height adjustable stand (HAS) 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...

  • Page 22: Back Cover

    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 cover in the direction shown to release it from the middle frame [1].

  • Page 23: Hard Drive

    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: Stand Back cover 3. To remove the hard drive assembly: a) Press down the tab securing the hard drive assembly to the system board shield [1].

  • Page 24: Installing The Hard Drive Assembly

    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.

  • Page 25: Solid State Drive -Ssd

    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.

  • Page 26: Installing The Ssd Card

    Stand Back cover System board shield 3. Remove the screw (M2x2.5) that secures the SSD card to the system board [1]. 4. Slide and remove the SSD card from the card slot on the system board [2]. 5. Remove the thermal pad [3]. NOTE: M.2 PCIe SSD with capacity over 512G (512G/1TB/2TB) must be installed with a thermal pad.

  • Page 27: Solid State Drive -2230

    4. Install the following components: System board shield Back cover 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.

  • Page 28: Installing The 2230 Ssd Card

    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]. Removing and Installing components...

  • Page 29: Memory Module

    4. Install the following components: System board shield Back cover Stand 5. Follow the procedure in After working inside your computer. Memory module Removing the memory module 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: Stand Back cover 3.

  • Page 30: Installing The Memory Module

    Installing the memory module 1. Align the notch on the memory module with the tab on the memory module slot, and slide it firmly into the slot at an angle [1]. 2. Press the memory module down until it clicks into place [2]. 3.

  • Page 31: System Board Shield

    4. Install the following components: Back cover 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: Stand Back cover 3.

  • Page 32: Installing The System Board Shield

    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]. Removing and Installing components...

  • Page 33: Intel Optane

    4. Install the following components: Back cover 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: Stand Back cover System board shield...

  • Page 34: Installing The Intel Optane Card

    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 Optane modules must be installed with a thermal pad.

  • Page 35: Wlan Card

    4. Install the following components: System board shield Back cover 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: Stand Back cover System board shield...
  • Page 36 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 card slot [4].

  • Page 37: Installing The Wlan Card

    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 WLAN to the system board [4].
  • Page 38 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 through to the routing channel [3].

  • Page 39: System Fan

    3. Install the following components: system board shield Back cover 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: Stand Back cover System board shield...

  • Page 40: Installing The System Fan

    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.

  • Page 41: Heat Sink

    4. Install the following components: System board shield Back cover 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 (dGPU).

  • Page 42: Installing The Heat Sink - Dgpu

    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 assembly base [2].

  • Page 43: Removing The Heat Sink - Uma

    3. Install the following components: System board shield Back cover 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: Stand Back cover System board shield...

  • Page 44: Installing The Heat Sink - Uma

    Installing the heat sink - UMA 1. Align the captive screws on the heat sink with the screw slots on the system board and the display assembly base .[1]. 2. Tighten the five captive screws in a sequential order [1,2,3,4,5] to secure the heat sink to the system board and display assembly base. [2].

  • Page 45: Pop-Up Camera

    3. Install the following components: System board shield Back cover 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: Stand Back cover System board shield...

  • Page 46: Installing The Pop-Up Camera

    5. To remove the pop-up camera module: a) Lift the pop-up camera bezel off the pop-up camera assembly [1]. b) Remove the camera module along with the camera cable off the pop-up camera assembly [2] Installing the pop-up camera 1. Follow the procedure in After working inside your computer.
  • Page 47 3. To replace the camera bezel: a) Replace the three screws (M3x5) that secure the pop-up camera bezel to the pop-up camera assembly [1]. b) To retract the pop-up camera, press the top of the pop-up camera assembly [2]. 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].

  • Page 48: Coin Cell Battery

    5. Install the following components: System board shield Back cover Stand Coin cell battery Removing the coin cell battery 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: Stand Back cover System board shield 3.

  • Page 49: Installing The Coin Cell Battery

    Installing the coin cell battery 1. Insert the coin cell battery into the battery socket on the system board, with the positive side facing up [1]. 2. Press down the battery into place until it fits securely [2]. Removing and Installing components...

  • Page 50: Processor

    3. Install the following components: System board shield Back cover 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: Stand Back cover System board shield...

  • Page 51: Installing The Processor

    Installing the processor 1. To install the processor: a) Ensure that the release lever on the processor socket is fully extended in the open position. Align the notches on the processor with the tabs on the processor socket and place the processor in the processor socket [1]. CAUTION: The pin-1 corner of the processor has a triangle that aligns with the triangle on the pin-1 corner on the processor socket.

  • Page 52: Base Cover

    2. Install the following components: Heat sink System board shield Back cover 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.
  • Page 53 4. Pry and lift the base cover off the middle frame. Removing and Installing components...

  • Page 54: Installing The Base Cover

    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 Installing components...

  • Page 55: Power Supply Unit - Psu

    4. Install the following components: System board shield Back cover Cable cover 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.
  • Page 56 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...

  • Page 57: Installing The Power Supply Unit -Psu

    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.

  • Page 58: Power Supply Unit Fan - Psu Fan

    3. Install the following components: Base cover System board shield Back cover 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.

  • Page 59: Installing The Power Supply Unit -Psu Fan

    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].

  • Page 60: Input And Output Bracket

    2. Install the following components: Base cover System board shield Back cover 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.
  • Page 61 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]. Removing and Installing components...

  • Page 62: Installing The Input And Output Bracket

    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]. 2.

  • Page 63: System Board

    3. Install the following components: Base cover System board shield Back cover 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: Stand Back cover Hard drive...
  • Page 64 • Backlight cable [2] • Camera cable [3] • System fan cable [4] • PSU fan cable [5] • Touch cable [6] • SIO_signal,SIO power,INT_ speaker, and DMIC cables [1] • Power button board cable [2] • LVDS cable [3] Removing and Installing components...
  • Page 65 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]. Removing and Installing components...

  • Page 66: Installing The System Board

    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...
  • Page 67 3. Connect the following cables to the system board: • Power supply unit cable [1] • Backlight cable [2] • Camera cable [3] • System fan cable [4] • PSU fan cable [5] • Touch cable [6] Removing and Installing components...
  • Page 68 • SIO_signal,SIO power,INT_ speaker, and DMIC cables [1] • Power button board cable [2] • LVDS cable [3] Removing and Installing components...

  • Page 69: Speakers

    4. Install the following components: I/O bracket Base cover Processor Heat sink WLAN card Intel Optane System board shield Memory Hard drive Back cover Stand 5. Follow the procedure in After working inside your computer Speakers Removing the speakers 1. Follow the procedure in Before working inside your computer.

  • Page 70: Installing The Speakers

    3. To disconnect the speakers: a) Disconnect the speaker cable from the system board [1]. b) Remove the nine screws (M3x4+7.1) that secure the speakers to the display-assembly base [2]. c) Unroute the speaker cable from the routing guide on the display assembly base. d) Lift the speakers and the speaker cable off the display assembly base [3].

  • Page 71: Power Button Board

    2. Install the following components: I/O bracket Base cover System board shield Back cover 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.

  • Page 72: Installing The Power Button Board

    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 the antenna cable, then adhere the power button board cable to the display assembly base [3].

  • Page 73: Microphones

    2. Install the following components: Speakers I/O bracket Base cover System board shield Back cover Stand 3. Follow the procedure in After working inside your computer. Microphones Removing the microphones 1. Follow the procedure in Before working inside your computer. 2.

  • Page 74: Installing The Microphones

    Installing the microphones 1. To install the microphone and cable: a) Align and place the microphone modules to the slots on the middle frame [1]. NOTE: Match the numbers on the microphone modules to the numbers on the middle frame while placing the microphone modules on the middle frame.

  • Page 75: Input And Output Board

    2. Install the following components: Speakers I/O bracket Base cover System board shield Back cover 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 inside your computer.
  • Page 76 c) Remove the two screws (M3x5) securing the I/O board shield to the display assembly 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].

  • Page 77: Installing The Intel Optane Card

    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 Optane modules must be installed with a thermal pad.

  • Page 78: Headset Port

    4. Install the following components: System board shield Back cover Stand 5. Follow the procedure in After working inside your computer. Headset port Removing the headset port 1. Follow the procedure in Before working inside your computer. 2. Remove the following components: Stand Back cover System board shield...

  • Page 79: Installing The Headset Port

    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 Installing components...

  • Page 80: Antennas

    3. Install the following components: I/O bracket Speakers I/O board Base cover System board shield Back cover Stand 4. Follow the procedure in After working inside your computer. Antennas Removing the antennas 1. Follow the procedure in Before working inside your computer.

  • Page 81: Installing The Antennas

    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 the antenna cables (2) to the middle frame [3]. d) Release the antenna modules (2) from the tabs and lift the antenna modules off the middle frame.

  • Page 82: Display Panel

    2. Install the following components: PSU fan I/O board WLAN card Speakers I/O bracket Base cover System board shield Back cover Stand 3. Follow the procedure in After working inside your computer. Display panel Removing the display panel 1. Follow the procedure in Before working inside your computer.
  • Page 83 System board PSU fan Camera 3. Remove the display backlight cable from the routing guides on the display assembly base [1]. 4. Remove the 12 screws (M3x5) that secure the middle frame and display assembly base to the display panel [2]. NOTE: The screws that secure the middle frame and display assembly base to the display panel are silver in color and etched with "LCD"...

  • Page 84: Installing The Display Panel

    Installing the display panel 1. Place the display assembly base in its upright position, and 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.
  • Page 85 5. Place the display assembly base on a clean and flat surface with the display panel facing down. 6. Replace the 12 (M3x5) screws that secure the display panel to the middle frame and display assembly base [2]. 7. Route the display backlit cable through the routing guides on the display assembly base [1] . NOTE: The screws that secure the middle frame and display assembly base to the display panel are silver in color and etched with "LCD"...

  • Page 86: Display Cable

    8. Install the following components: Camera PSU fan System board WLAN card Hard drive Speakers I/O bracket Base cover System board shield Back cover Stand 9. Follow the procedure in After working inside your computer. Display cable Removing the display cable 1.

  • Page 87: Installing The Display Cable

    System board shield WLAN card System fan Camera Base cover PSU fan I/O bracket System board Speakers Power button board Microphones I/O board Headset port Antennas Display panel 3. To remove the display cable: a) Fold the securing tape inward [1]. b) To release the cable, press the tabs on both sides [2].

  • Page 88: Middle Frame

    2. Install the following components: Display panel Antennas Headset port I/O board Microphones Power button board Speakers System board I/O bracket PSU fan Base cover Camera System fan WLAN card System board shield Hard drive Back cover Stand 3. Follow the procedure in After working inside your computer.
  • Page 89 2. Remove the following components: Stand Back cover Hard drive System board shield WLAN card System fan Camera Base cover PSU fan I/O bracket System board Speakers Power button board Microphones I/O board Headset port Antennas Display panel 3. Remove the 16 screws (M3x5) that secure the middle frame to the display assembly base [1]. 4.

  • Page 90: Installing The Middle Frame

    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]. Removing and Installing components...
  • Page 91 2. Press and secure and the tabs on the middle frame to the slots on the display assembly base [1]. 3. Replace the 16 screws (M3x5) that secure the middle frame to the display assembly base [2]. Removing and Installing components...
  • Page 92 4. Install the following components: Display panel Antennas Headset port I/O board Microphones Power button board Speakers System board I/O bracket PSU fan Base cover Camera System fan WLAN card System board shield Hard drive Back cover Stand 5. Follow the procedure in After working inside your computer.

  • Page 93: Troubleshooting Your Computer

    Invoke diagnostics boot by either of the methods that are suggested below: 1. Power on 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 key to select the Diagnostics option and then press Enter.

  • Page 94: Lcd Built In Self Test - Bist

    LCD built in self test - BIST All-in-One (AIO) systems supports LCD BIST similar to any other Dell systems that have BIST test implemented. It allows the user to isolate the LCD during troubleshooting to determine which sub-system is at fault. The main difference is the lack of an integrated keyboard scan controller in the AIO.
  • Page 95 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...

  • Page 96: Getting Help

    Dell product catalog. Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell for sales, technical support, or customer service issues: 1.

This manual is also suitable for:

Optiplex 7770 all-in-one

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