Справочник Пользователя для Apple MD094LL/A
iMac (27-inch, Mid 2010) Symptom Charts — Startup and Power
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2010-09-09
3) Power-related system shut downs:
• External power source was removed.
Power-related shut downs are due to power management, poor connections, or defective
power sources.
power sources.
• Verify the following cables are securely connected: AC power cable, AC inlet, and DC power
supply cable connections to logic board
4) Hardware-related system shut downs:
• One of the temperature sensors reached a specified temperature limit
• One of the voltage sensors reached a specified voltage limit
• One of the current sensors reached a specified current limit
These shut downs are due to temperature, voltage, current, fan speed or other hardware related
sensor values getting out of range.
• One of the voltage sensors reached a specified voltage limit
• One of the current sensors reached a specified current limit
These shut downs are due to temperature, voltage, current, fan speed or other hardware related
sensor values getting out of range.
Suggested steps for troubleshooting are :
• Check for all sensors connections and values using the latest available Apple service utilities
• Check for all sensors connections and values using the latest available Apple service utilities
and locate sensors using
in the General Troubleshooting chapter
• Check /listen for fan(s) operation
• Check cleanliness of the heatsink fins and the air flow,
• Check for correct seating of the heatsink on logic board and presence of thermal material.
• Check cleanliness of the heatsink fins and the air flow,
• Check for correct seating of the heatsink on logic board and presence of thermal material.
For additional information refer to the Intermittant Shutdown table on the next page.