Powerbook Logic Board

The Dimm Voltage Jumpers Ram

Audio in pul Atk FireWire lO l ttAS T Ethernet. The PMU Power Management Unit is a micro controller chip that controls all power functions for the computer. The PMU is a computer within a computer. It has memory, software, firmware, I O, two crystals, and a CPU. Its function is to Tell the computer to turn on, turn off, sleep, wake, idle, etc. Manage system resets from various commands. Maintain parameter RAM PRAM . Manage the real-time clock. Important The PMU is very sensitive and touching...