- Notes, cautions, and warnings
- Working inside your computer
- Removing and installing components
- Recommended tools
- Screw list
- Major components of Inspiron 15 3521
- Secure Digital (SD) Card
- Base cover
- Battery
- Memory module
- M.2 solid-state drive
- 2.5-inch hard drive
- Wireless card
- Speakers
- System board thermal plate
- Touchpad
- Display assembly
- Display hinge caps
- Display bezel
- Display hinges
- Display panel
- Camera
- Display cable
- System board
- I/O daughter-board flexible flat cable
- I/O daughter-board
- Power button
- Power button with optional fingerprint reader
- Power-adapter port
- Display back-cover and antenna assembly
- Palm-rest and keyboard assembly
- Drivers and downloads
- BIOS setup
- Troubleshooting
- Handling swollen Lithium-ion batteries
- Dell SupportAssist Pre-boot System Performance Check diagnostics
- Built-in self-test (BIST)
- System-diagnostic lights
- Recovering the operating system
- Real-Time Clock (RTC Reset)
- Backup media and recovery options
- WiFi power cycle
- Drain residual flea power (perform hard reset)
- Getting help and contacting Dell
Inspiron 15 3521 Service Manual
Installing the touchpad
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
NOTE: Ensure that the touchpad is aligned with the guides available on the palm-rest and keyboard assembly, and the gap on either sides of the touchpad is equal.
The following images indicate the location of the touchpad and provide a visual representation of the installation procedure.
Steps
- Align and place the touchpad along with the touchpad flexible flat cable into its slot on the palm-rest and keyboard assembly.
- Replace the two screws (M2x2) to secure the touchpad to the palm-rest and keyboard assembly.
- Connect the touchpad flexible flat cable to the connector on the system board.
- Place the touchpad bracket on the touchpad.
- Align the screw holes on the touchpad bracket to the screw holes on the palm-rest and keyboard assembly.
- Replace the three screws (M2x2) to secure the touchpad bracket to the palm-rest and keyboard assembly.
- Connect the hard-drive flexible flat cable to the connector on the system board.
Next steps
- Install the 3-cell battery or the 4-cell battery, whichever applicable.
- Install the base cover.
- Install the secure digital card.
- Follow the procedure in After working inside your computer.
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