Warning: Make sure you do not hold down the "fn" key when resetting the power manager. Resetting the power manager means you will also need to reset the date and time (using the Date & Time pane of System Preferences).
Inverter Connector P.67
LCD Panel P.67
Mini DVI & CRT Connector P. 69
Transition-Minimized Differential Signaling
Ethernet Connector P. 37
FW Connector P 39
USB 2.0 Connector P 42
Connector P 35
CPU Thermal Sensor P10
Processor 479 BGA P.7-9
Clocking Configuration and Spectrum P.32-33
Low Voltage Differential Signalling
ENET Controller P.36
FW Controller P. 38
Chipset-NB 1466UFCBGA P. 12-20
IR Controller P.41
Internal KB TP Connector P. 40
Chipset-SB 609 BGA P.21-26
SPI Flash Boot ROM P.50
SMBUS P 27
Fan Connector P51
LPC Debug Connector P. 47
Connector to Batteries & Charger P. 64
Study the block diagram to understand which I/O ports have a direct connection to the outside world and which ports have an I/O interface controller between the system I/O mapper and the outside world.
For example, let us say you are troubleshooting an AirPort connectivity symptom. Input to the AirPort Extreme Card comes from the MLB. Power and addressing of the card are necessary for it's operation. Microwave data output signal to the antenna is the desired output and this too is necessary for the card's operation. You have three components to check to discover fault with AirPort operation: MLB, AirPort Extreme Card, and antenna.
If installing a known-good AirPort Extreme Card restores operation, you need to focus on the original card. If the known-good card does not restore operation, you need to focus on the MLB or the original antenna.
When you focus on the MLB, from the block diagram, you can see that the MacBook (13-inch) AirPort Extreme Card is on the PCI Express bus. Investigate other devices on the PCI Express bus, such as the Ethernet controller. Determine if the Ethernet port is working. (System Profiler is a good tool to verify I/O.)
If the Ethernet port is working, the MLB is probably functioning; focus on the original AirPort antenna. As an additional test, if you can see both the known-good AirPort Extreme Card and original AirPort Extreme Card in System Profiler, suspect the antenna.
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