Apple these schematic diagrams cover the following models apple motherboard repair and sales chipset apple these schematic diagrams cover the following models apple laptop logic board schematic diagram call airport not work a1286 macbook pro mid 2006 macbook macbook11 a1181 emc 2092 late 2006 macbook macbook21 a1181 emc 2121 mid 2007 macbook macbook21 a1181 emc 2139 . I have an imac model a1311 emc 2389 that wont power up properly i want to test the power supply but cannot find the output voltage values anywhere on the internet i would be happy to post a technique article showing people how to access and test the power supply in this model if someone can help me determine their proper output values. Apple you cant find pinouts or circuit diagrams for as they are state secrets of apple land to retain power and they use odd connectors nobody else uses on power supplys a pc is common with standard pinouts for all common connectors to supply power to any desktop box. Wiring diagram what is a wiring diagram a wiring diagram is a simple visual representation of the physical connections and physical layout of an electrical system or circuit it shows how the electrical wires are interconnected and can also show where fixtures and components may be connected to the system when and how to use a wiring diagram
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