Apple MacBook - Page 18

MacBook (13-inch, Late 2009) General Troubleshooting — MacBook (13-inch, Late 2009): Functional Overview 18
2010-06-15
MacBook (13-inch, Late 2009): Functional Overview
Refer to this diagram for symptoms related to logic board connectors. To more easily view this
page, select the Rotate command.
Fan: • intermittent shutdown • freezes • noisy fan
Left speaker: • no/distorted treble
output from left top
case speaker
Battery: • not running when on battery only • no power on (if incorrect model of power adapter) • X symbol for battery in menu bar
Keyboard/power on button: • no power on from keyboard • nonresponsive keys
Trackpad/trackpad button/ thermal sensor: • no cursor movement • no click action • runs slow (trackpad thermal sensor input missing)
Memory: • no startup • freeze or kernel panic • horizontal video lines
Connector located on other side of logic board: Sleep sensor: • no sleep when display closed • no video on internal LCD, but main monitor on external display when connected (sensor stuck)
Sleep LED: • no sleep LED status
Microphone: • no internal sound input level (when internal microphone is selected in Sound Input Preferences)
Wide-range rear speaker: • no /bad medium or bass center sound output SATA optical drive: • no SATA optical drive visible in System Profiler • no startup from optical drive Right speaker: • no/distorted treble output from right top case speaker
SATA harddrive: • no SATA hard drive visible in System Profiler • no startup from internal hard drive
LCD/backlight/camera: • no video on internal LCD • no backlight • no camera
AirPort/Bluetooth antennas: • no /poor wireless reception
MagSafe connector (under logic board): • no power on • no battery charge • no LED on adapter
AirPort/Bluetooth: • device(s) not seen in System Profiler • no communication with them • no startup (if shorted cable)