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현재 버전 게시자: Dan ,

텍스트:

@captainsnowball here is the meaning of the LED's:
 
* '''LED 1''' - Indicates that the trickle voltage from the power supply has been detected by the main logic board. This LED will remain ON whenever the iMac G5 is connected to a working AC power source. The LED will remain on even when the computer has been shut down or put to sleep. The LED will turn off only if the AC power source is disconnected or the power supply is faulty.
 
* '''LED 2''' - Indicates that the main logic board has detected proper power from the power supply when the computer is turned on. This LED will be ON when the computer is turned on and the power supply is working correctly.
 
* '''LED 3''' - Indicates that the computer and the LCD display are communicating. This LED will be ON when the computer is turned on and video signal is being generated.
 
'''LED* '''LED 4''' - Lights only if the computer detects an over-temperature condition. This LED will be OFF when the computer is turned on and running at the correct temperature.
'''LED* '''LED 4''' - Lights only if the computer detects an over-temperature condition. This LED will be OFF when the computer is turned on and running at the correct temperature.
 
Try an SMU reset with the switch on the logic board:
 
The SMU supports the following functions
 
* provides initial configuration of system clocks
* automatically initiates and sequences voltage and frequency slews when the OS requests a transition to a new run level
* handles all power button and environmental user events
* controls RPM fans
* provides processor Mode Ring and thermal data store
* monitors processor temperature and power consumption
* monitors VRD10-compliant processor power supply digital interface.
 
The iMac G5 system employs advanced thermal and wattage management to keep acoustic noise to a minimum. The enclosure is divided into discrete zones, each with independently controlled fans bringing in cool air from the front of the enclosure, directing it over system components and exhausting it out the rear. Temperature and power consumption are monitored by the operating system which communicates with the SMU, which in turn controls and monitors fan operation. If Mac OS X is not booted, thermal management must be provided by the alternate development operating system.
 
Note:
 
If Mac OS X is not booted and the alternate development operating system does not manage the fans, the fans go into an unmanaged state and run at full speed.
 
The SMU controls the fans and regulates the speeds to run each fan. The SMU derives fan speed from sensors in each thermal zone. Some of these sensors monitor thermal only, while others monitor both thermal and power.
 
If the SMU does not receive an update from the operating system within two minutes, it begins to ramp up the speed of the fans to full speed.
 
=== Update (05/06/2018) ===
 
Here is the location of the SMU button
 
[image|1447514]

현황:

open

편집자: Dan ,

텍스트:

@captainsnowball here is the meaning of the LED's:
 
LED 1* '''LED 1''' - Indicates that the trickle voltage from the power supply has been detected by the main logic board. This LED will remain ON whenever the iMac G5 is connected to a working AC power source. The LED will remain on even when the computer has been shut down or put to sleep. The LED will turn off only if the AC power source is disconnected or the power supply is faulty.
LED 1* '''LED 1''' - Indicates that the trickle voltage from the power supply has been detected by the main logic board. This LED will remain ON whenever the iMac G5 is connected to a working AC power source. The LED will remain on even when the computer has been shut down or put to sleep. The LED will turn off only if the AC power source is disconnected or the power supply is faulty.
 
indicates* '''LED 2''' - Indicates that the trickle voltagemain logic board has detected proper power from the power supply has been detectedwhen the computer is turned on. This LED will be ON when the computer is turned on and the power supply is working correctly.
indicates* '''LED 2''' - Indicates that the trickle voltagemain logic board has detected proper power from the power supply has been detectedwhen the computer is turned on. This LED will be ON when the computer is turned on and the power supply is working correctly.
 
by* '''LED 3''' - Indicates that the main logic boardcomputer and the LCD display are communicating. This LED will remainbe ON wheneverwhen the iMac G5computer is turned on and video signal is being generated.
by* '''LED 3''' - Indicates that the main logic boardcomputer and the LCD display are communicating. This LED will remainbe ON wheneverwhen the iMac G5computer is turned on and video signal is being generated.
 
connected to a working AC power source. The LED will remain on even when the

computer has been shut down or put to sleep. The LED will turn off only if the AC

power source is disconnected or the power supply is faulty.

LED 2

indicates that the main logic board has detected proper power from the

power supply when the computer is turned on. This LED will be ON when the

computer is turned on and the power supply is working correctly.

LED 3

indicates that the computer and the LCD display are communicating. This

LED will be ON when the computer is turned on and video signal is being

generated.

LED 4

lights
'''LED 4''' - Lights only if the computer detects an over-temperature condition. This LED

will
will be OFF when the computer is turned on and running at the correct

temperature.

Try an SMU reset with the switch on the logicboard:
temperature.
connected to a working AC power source. The LED will remain on even when the

computer has been shut down or put to sleep. The LED will turn off only if the AC

power source is disconnected or the power supply is faulty.

LED 2

indicates that the main logic board has detected proper power from the

power supply when the computer is turned on. This LED will be ON when the

computer is turned on and the power supply is working correctly.

LED 3

indicates that the computer and the LCD display are communicating. This

LED will be ON when the computer is turned on and video signal is being

generated.

LED 4

lights
'''LED 4''' - Lights only if the computer detects an over-temperature condition. This LED

will
will be OFF when the computer is turned on and running at the correct

temperature.

Try an SMU reset with the switch on the logicboard:
temperature.
 
Try an SMU reset with the switch on the logic board:
The SMU supports the following functions
* provides initial configuration of system clocks
* automatically initiates and sequences voltage and frequency slews when the OS requests a transition to a new run level
* handles all power button and environmental user events
* controls RPM fans
* provides processor Mode Ring and thermal data store
* monitors processor temperature and power consumption
* monitors VRD10-compliant processor power supply digital interface.
 
• provides initial configuration of system clocks

• automatically initiates and sequences voltage and frequency slews when the OS

requests a transition to a new run level

• handles all power button and environmental user events

• controls RPM fans

• provides processor Mode Ring and thermal data store

• monitors processor temperature and power consumption

• monitors VRD10-compliant processor power supply digital interface.

The
The iMac G5 system employs advanced thermal and wattage management to keep

acoustic
acoustic noise to a minimum. The enclosure is divided into discrete zones, each with

independently
independently controlled fans bringing in cool air from the front of the enclosure, directing it over system components and exhausting it out the rear. Temperature and power consumption are monitored by the operating system which communicates with the SMU, which in turn controls and monitors fan operation. If Mac OS X is not booted, thermal management must be provided by the alternate development operating system.
• provides initial configuration of system clocks

• automatically initiates and sequences voltage and frequency slews when the OS

requests a transition to a new run level

• handles all power button and environmental user events

• controls RPM fans

• provides processor Mode Ring and thermal data store

• monitors processor temperature and power consumption

• monitors VRD10-compliant processor power supply digital interface.

The
The iMac G5 system employs advanced thermal and wattage management to keep

acoustic
acoustic noise to a minimum. The enclosure is divided into discrete zones, each with

independently
independently controlled fans bringing in cool air from the front of the enclosure, directing it over system components and exhausting it out the rear. Temperature and power consumption are monitored by the operating system which communicates with the SMU, which in turn controls and monitors fan operation. If Mac OS X is not booted, thermal management must be provided by the alternate development operating system.
 
Note:
 
If Mac OS X is not booted and the alternate development operating system does not manage the fans, the fans go into an unmanaged state and run at full speed.
If Mac OS X is not booted and the alternate development operating system does not manage the fans, the fans go into an unmanaged state and run at full speed.
 
manage the fans, the fans go into an unmanaged state and run at full speed.

The
The SMU controls the fans and regulates the speeds to run each fan. The SMU derives

fan
fan speed from sensors in each thermal zone. Some of these sensors monitor thermal

only
only, while others monitor both thermal and power.
manage the fans, the fans go into an unmanaged state and run at full speed.

The
The SMU controls the fans and regulates the speeds to run each fan. The SMU derives

fan
fan speed from sensors in each thermal zone. Some of these sensors monitor thermal

only
only, while others monitor both thermal and power.
 
If the SMU does not receive an update from the operating system within two minutes, it begins to ramp up the speed of the fans to full speed.
 
=== Update (05/06/2018) ===
 
hereHere is the smulocation of the SMU button [image|1447514

[image|1447514
]
hereHere is the smulocation of the SMU button [image|1447514

[image|1447514
]

현황:

open

편집자: oldturkey03 ,

텍스트:

@captainsnowball here is the meaning of the LED's:
 
LED 1
 
indicates that the trickle voltage from the power supply has been detected
 
by the main logic board. This LED will remain ON whenever the iMac G5 is
 
connected to a working AC power source. The LED will remain on even when the
 
computer has been shut down or put to sleep. The LED will turn off only if the AC
 
power source is disconnected or the power supply is faulty.
 
LED 2
 
indicates that the main logic board has detected proper power from the
 
power supply when the computer is turned on. This LED will be ON when the
 
computer is turned on and the power supply is working correctly.
 
LED 3
 
indicates that the computer and the LCD display are communicating. This
 
LED will be ON when the computer is turned on and video signal is being
 
generated.
 
LED 4
 
lights only if the computer detects an over-temperature condition. This LED
 
will be OFF when the computer is turned on and running at the correct
 
temperature.
 
Try an SMU reset with the switch on the logicboard:
 
The SMU supports the following functions
 
• provides initial configuration of system clocks
 
• automatically initiates and sequences voltage and frequency slews when the OS
 
requests a transition to a new run level
 
• handles all power button and environmental user events
 
• controls RPM fans
 
• provides processor Mode Ring and thermal data store
 
• monitors processor temperature and power consumption
 
• monitors VRD10-compliant processor power supply digital interface.
 
The iMac G5 system employs advanced thermal and wattage management to keep
 
acoustic noise to a minimum. The enclosure is divided into discrete zones, each with
 
independently controlled fans bringing in cool air from the front of the enclosure, directing it over system components and exhausting it out the rear. Temperature and power consumption are monitored by the operating system which communicates with the SMU, which in turn controls and monitors fan operation. If Mac OS X is not booted, thermal management must be provided by the alternate development operating system.
 
Note:
 
If Mac OS X is not booted and the alternate development operating system does not
 
manage the fans, the fans go into an unmanaged state and run at full speed.
 
The SMU controls the fans and regulates the speeds to run each fan. The SMU derives
 
fan speed from sensors in each thermal zone. Some of these sensors monitor thermal
 
only, while others monitor both thermal and power.
 
If the SMU does not receive an update from the operating system within two minutes, it begins to ramp up the speed of the fans to full speed.
 
=== Update (05/06/2018) ===
 
here is the smu button [image|1447514]

현황:

open

편집자: oldturkey03 ,

텍스트:

@captainsnowball here is the meaning of the LED's:
 
LED 1
 
indicates that the trickle voltage from the power supply has been detected
 
by the main logic board. This LED will remain ON whenever the iMac G5 is
 
connected to a working AC power source. The LED will remain on even when the
 
computer has been shut down or put to sleep. The LED will turn off only if the AC
 
power source is disconnected or the power supply is faulty.
 
LED 2
 
indicates that the main logic board has detected proper power from the
 
power supply when the computer is turned on. This LED will be ON when the
 
computer is turned on and the power supply is working correctly.
 
LED 3
 
indicates that the computer and the LCD display are communicating. This
 
LED will be ON when the computer is turned on and video signal is being
 
generated.
 
LED 4
 
lights only if the computer detects an over-temperature condition. This LED
 
will be OFF when the computer is turned on and running at the correct
 
temperature.
 
Try an SMU reset with the switch on the logicboard:
The SMU supports the following functions
• provides initial configuration of system clocks
• automatically initiates and sequences voltage and frequency slews when the OS
requests a transition to a new run level
• handles all power button and environmental user events
• controls RPM fans
• provides processor Mode Ring and thermal data store
• monitors processor temperature and power consumption
• monitors VRD10-compliant processor power supply digital interface.
The iMac G5 system employs advanced thermal and wattage management to keep
acoustic noise to a minimum. The enclosure is divided into discrete zones, each with
independently controlled fans bringing in cool air from the front of the enclosure, directing it over system components and exhausting it out the rear. Temperature and power consumption are monitored by the operating system which communicates with the SMU, which in turn controls and monitors fan operation. If Mac OS X is not booted, thermal management must be provided by the alternate development operating system.
Note:
If Mac OS X is not booted and the alternate development operating system does not
manage the fans, the fans go into an unmanaged state and run at full speed.
The SMU controls the fans and regulates the speeds to run each fan. The SMU derives
fan speed from sensors in each thermal zone. Some of these sensors monitor thermal
only, while others monitor both thermal and power.
If the SMU does not receive an update from the operating system within two minutes, it begins to ramp up the speed of the fans to full speed.

현황:

open

원문 게시자: oldturkey03 ,

텍스트:

@captainsnowball here is the meaning of the LED's:

LED 1

indicates that the trickle voltage from the power supply has been detected

by the main logic board. This LED will remain ON whenever the iMac G5 is

connected to a working AC power source. The LED will remain on even when the

computer has been shut down or put to sleep. The LED will turn off only if the AC

power source is disconnected or the power supply is faulty.

LED 2

indicates that the main logic board has detected proper power from the

power supply when the computer is turned on. This LED will be ON when the

computer is turned on and the power supply is working correctly.

LED 3

indicates that the computer and the LCD display are communicating. This

LED will be ON when the computer is turned on and video signal is being

generated.

LED 4

lights only if the computer detects an over-temperature condition. This LED

will be OFF when the computer is turned on and running at the correct

temperature.

현황:

open