Apple MD094LL/A Manuale Utente
iMac (27-inch, Mid 2010) — General Troubleshooting
26
2010-09-09
TS2P
Excessive upper internal
enclosure temperature, or
Skin temp sensor damaged/
disconnected from top of logic
board.
enclosure temperature, or
Skin temp sensor damaged/
disconnected from top of logic
board.
Verify that the skin temp sensor cable
is securely connected to the top of the
logic board and sensor is attached to
rear housing (near the camera). Replace
the sensor cable if damaged.
is securely connected to the top of the
logic board and sensor is attached to
rear housing (near the camera). Replace
the sensor cable if damaged.
TC0H
Excessive processor heatsink
temperature, or CPU temp
sensor damaged/disconnected
from back side of logic board
(this sensor is part of logic
board)
temperature, or CPU temp
sensor damaged/disconnected
from back side of logic board
(this sensor is part of logic
board)
Check CPU sensor cable connection to
logic board. It requires removal of the
logic board.
logic board. It requires removal of the
logic board.
If the sensor is
disconnected, the
CPU fan will run at full
speed.
disconnected, the
CPU fan will run at full
speed.
TG0D
Excessive graphics processor
die temperature (this sensor
is part of graphics processor
chip)
die temperature (this sensor
is part of graphics processor
chip)
Test with known-good video card
TG0H
Excessive graphics processor
heatsink temperature, or
GPU temp sensor damaged/
disconnected from back side of
logic board (this sensor is part
of video card assembly)
heatsink temperature, or
GPU temp sensor damaged/
disconnected from back side of
logic board (this sensor is part
of video card assembly)
Check GPU sensor cable connection to
logic board. It requires removal of the
logic board.
logic board. It requires removal of the
logic board.
If sensor is
disconnected the CPU
fan will run at full
speed.
disconnected the CPU
fan will run at full
speed.
Tp1P, Tp2H,
Tp3H
Tp3H
Excessive power supply
temperature (these sensors
are part of the power supply
board)
temperature (these sensors
are part of the power supply
board)
Test with known-good power cable
harness , or known-good power supply
board.
harness , or known-good power supply
board.
ODD fan
Optical fan/blower located
next to right speaker
next to right speaker
Verify that the ODD blower/fan cable is
securely connected to the right side of
the logic board and that there are no
obstructions that would prevent the
blower/fan from rotating. Replace fan if
the error continues.
securely connected to the right side of
the logic board and that there are no
obstructions that would prevent the
blower/fan from rotating. Replace fan if
the error continues.
Normal fan operation,
except the ODD blower
except the ODD blower
HDD fan
Hard drive fan/blower, located
below logic board, near hard
drive
below logic board, near hard
drive
Verify that the HDD blower/fan cable
is securely connected to the top of
the logic board and that there are no
obstructions that would prevent the
blower/fan from rotating. Replace fan if
the error continues.
is securely connected to the top of
the logic board and that there are no
obstructions that would prevent the
blower/fan from rotating. Replace fan if
the error continues.
Normal fan operation,
except the HDD blower
except the HDD blower
CPU fan
CPU fan/blower, located next
to left speaker (logic board has
to be removed to replace CPU
blower)
to left speaker (logic board has
to be removed to replace CPU
blower)
Verify that the CPU blower/fan cable is
securely connected to the left side of
the logic board and that there are no
obstructions that would prevent the
blower/fan from rotating. Replace fan if
the error continues.
securely connected to the left side of
the logic board and that there are no
obstructions that would prevent the
blower/fan from rotating. Replace fan if
the error continues.
Normal fan operation,
except the CPU blower
except the CPU blower