LCD Screen
This is arguably the most essential part of the PSP. This is the video screen where all of your games and movies are displayed.
Motherboard
This is the heart of the PSP. It is where the CPU and GPU are located, as well as the Wi-Fi receiver and memory card slot. Everything that goes into the PSP somehow connects to the motherboard and the motherboard controls everything in your PSP. It is the central brain of the entire unit.
Power Switch
This is connected to the motherboard and is used to turn the PSP on and off.
UMD Laser Assembly
The Laser assembly is where the disc is loaded. This unit is what reads your discs and makes your UMD games and movies playable.
Joypad
This is the joystick of the PSP. It is a separate unit that attaches to the motherboard to give you a compact analog joypad.
Control Pad
The control pad, like the joypad, is a separate unit that functions as the up, down, left, and right buttons. It connects to the motherboard.
Front Bezel
This is the faceplate of the PSP. It holds the unit together and has the "Circle," "Box," "Triangle" and "X" buttons. It also has a plastic screen to protect the LCD screen.
UMD Door
This door attaches the rear of the PSP and is where the UMDs are loaded. It opens and closes to secure and protect discs.
Battery Door
This detachable door houses the battery. It is located on the back of the PSP.
1800mAh Hi-Capacity PSP Battery
This is the lifeline of the PSP. It is what powers it and keeps the PSP running when there is no power adapter plugged in.