Apple MacBook Pro 17-inch (original, Core 2 Duo, 2.4GHz, Late 2007 CTO, Early 2008, and Late 2008) User Manual
Page 171
MacBook Pro 17-inch (original, Core 2 Duo, 2.4/2.6GHz, 2008) Troubleshooting — Hardware Symptom Charts
171
System shuts down intermittently
Disconnect all external peripherals and eject any ExpressCard.
1.
Consult system.log for possible shutdown error codes using Console (in Utilities folder).
2.
Shutdown Code Potential Indication, Issue and/or Fix
3
Normal behavior... power button was pressed for more than four
seconds to force shutdown.
-5
Normal behavior... regular shutdown
-60
Try charging battery.
-70
Replace top case.
-72
1) replace heatsink sensor
2) reapply thermal paste
3) replace heatsink
-74
1) swap battery for KGB battery
2) replace battery
-78
Charger circuit on logic board...
1) try swapping for KGB left I/O board... replace if necessary
2) replace logic board
-82
Test thermal sensor JST connectors for improper seating or damage.
Replace thermal sensor(s). See Thermal Sensor take apart section.
Make sure a known-good fully charged battery is fully inserted. Check that the battery latch
3.
is fully engaged and functional. Check the battery connection to logic board.
Make a visual inspection of the battery connector in the battery bay. The battery connector
4.
should allow for some play to align to the battery terminals. Make sure all blades are visible
and not bent. If damaged, replace the battery connector.
Make sure the system is not overheating, the air vents are clear, and the unit was not being
5.
used on a soft surface.
Make sure all feet are still on the bottom case. If not, order foot replacement kit.
6.
Check that the fan cables are connected and the fans are operational.
7.
Remove the battery and connect a known-good 85W power adapter and power cord or plug
8.
to a known-good power source. If the DC plug is properly seated, the LED should light up. If
not, consult the MagSafe power adapter troubleshooting section.
Verify that all three thermal sensor connectors are well seated to the logic board and that
9.
there is no damage to any of the cables.
Run ASD diagnostics to determine if any of the thermal sensors are not functioning correctly.
10.
Replace any failing sensors. See chart below for correlation between error code and part.
Name
Location
TC0D, TC0P, TG0P, TG0T, TG0D, Th0H
Main logic board
TB0T
Main battery
TW0P
AirPort Extreme Card
Tm0P
Left I/O board