The **HP 15-R2** series (often referred to as the HP 15-r200 series) is a line of budget-friendly laptops released around 2015. Understanding its electronic components is essential for repairs or upgrades. --- ## 1. Core Internal Components The laptop is built around a standard clamshell architecture. Below are the primary electronic modules: | Component | Description | Specifications / Options | | :--- | :--- | :--- | | **Processor (CPU)** | Usually soldered to the motherboard (BGA). | Intel Core i3/i5 (5th Gen Broadwell) or Pentium/Celeron (Braswell/Bay Trail). | | **Memory (RAM)** | Removable SODIMM slots. | Typically 1 slot (some variants have 2). Supports DDR3L-1600MHz. | | **Storage** | 2.5-inch SATA interface. | Supports standard 7mm or 9.5mm HDD or SSD. | | **Graphics (GPU)** | Integrated or Discrete. | Intel HD Graphics (Integrated) or NVIDIA GeForce 820M/920M (Discrete). | | **Motherboard** | The central PCB. | Proprietary HP layout; includes BIOS chip and CMOS battery. | --- ## 2. Peripheral & Input/Output (I/O) Parts These parts connect to the motherboard via ribbon cables or direct soldering: ### Display Assembly * **Panel:** 15.6-inch WLED-backlit HD BrightView. * **Connector:** 30-pin eDP (Embedded DisplayPort) cable. * **Webcam:** Fixed 720p HD camera module integrated into the bezel. ### Connectivity * **Wi-Fi/Bluetooth Card:** Mini PCIe or M.2 slot (usually Realtek or Broadcom chips). * **I/O Ports:** * 1 x USB 3.0, 2 x USB 2.0. * HDMI 1.4 port. * RJ-45 Ethernet port (10/100 Mbps). * SD Card Reader slot. --- ## 3. Power and Battery System The electronic power management involves three main parts: 1. **DC Jack:** A harness-style power jack (not soldered, which makes it easy to replace if the pin breaks). 2. **Battery:** 4-cell Li-ion (typically 41Wh). It is **external** and removable via latches on the bottom. 3. **AC Adapter:** Uses a 45W or 65W smart AC adapter with a 4.5mm (blue tip) barrel connector. --- ## 4. Common Replacement Parts List If you are looking to repair an HP 15-R2, these are the most frequently searched electronic part categories: ```json { "frequently_replaced": [ "Keyboard (Non-backlit, US/UK layout)", "CPU Cooling Fan (3-pin or 4-pin)", "SATA Hard Drive Cable", "Screen Video Cable (LVDS/eDP)", "Touchpad Button Board" ] } ``` ---