![]() The computer does not power on, there is something else wrong with it refer to the Wait ten seconds before connecting the power cord and powering on the computer. Reset button a second time because it could crash the PMU chip.ģ. Press the PMU reset button once and then proceed to step 3. If the battery is good, go directly to step 2.Ģ. If the battery is bad, replace it, wait ten seconds, and then Disconnect the power cord and check the battery in the battery holder. When you have aĬomputer that fails to power up, follow this procedure before replacing any modules:ġ. Many system problems can be resolved by resetting the PMU chip. If the PMU crashesĪnd is not reset, the battery life goes from about five years to about two days.įor the location of the PMU reset button, see "Logic Board Diagram" in the Views Touching the circuitry on the logic board can cause the PMU to crash. €¢ manage system resets from various commands.īe very careful when handling the logic board. €¢ tell the computer to turn on, turn off, sleep, wake, idle, etc. The PMU (Power Management Unit) is a microcontroller chip that controls all powerįunctions for this computer. The most you can do crashing PMU is to expire the battery.įor those that want the official procedure for resetting the PMU here it is. I don't know where the myth came from that suggests if you crash your PMU you need to replace your logic board but it's not true.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |