Drive Bay Fan Slowly Spins Up

I Do music , Its noisy , so it really gets annoying... It never used to do this.
Information Using iStat pro , shows my drive bay fan to get faster and faster, eventually over 3000rpm.., yet the temperature remains Solid at 33 degrees C. Is there a Software fix for this ?

I used to get this occasionaly when I did repairs on these machines. It is one of two things, either you may have a problem with your logic board, or you may just need a thermal calibration. The thermal calibration can be done using the Apple ASD disks they have at the apple repair facilities (ie apple store or Service center). I think this may solve your issue. Good luck

Similar Messages

Drive Bay Fan

Hi,
I have a dual 1.8 G5 produced in July of 2004. Recently I noted an oscillating whistle sound coming from the computer, not too loud, and with my handy stethoscope localized it to the Drive Bay Fan. With Hardware monitor the drive bay fan runs constantly at 1000 rpm, which is right, so no problem there. A bad bearing I suppose. So I would like to get a new fan and replace it. Consulting various parts outlets and their diagrams of the G5, none of them show or list a 'drive bay fan'. There is a PCI fan, which is the one paired with the speaker in front. The drive bay fan is at the top of the machine (in the drive bay), in the section where the optical drive and the hard drives are located.
Does anyone know anything about this?
Thanks, Ray

I can't even find the drive bay fan in the service manual. Nothing in the parts list. ??
You might try calling Heartland Business Systems and ask for the Apple service department. They may be able to help you out.
1-800-236-7914
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Drive bay fan speed

hi all
my drive bay fan speed is way above the rest is this a problem on the way ?
cpu a intake 365 rpm
cpu b intake 355 rpm
cpu a exhaust 373 rpm
cpu b exhaust 367 rpm
DRIVE BAY 1000 rpm
slots 76 rpm
backside 51 rpm
all the fan speeds move up and down apart from drive bay that stays put at 1000rpm
g5 2ghz

Sitting here on a cool, cloudy day down here in Paradise, I am seeing the CPU fans "idling" between 300 and 450, only running up into the 1-2K ranges if for some reason the CPU starts running up in usage. Drive bay is a constant 1K, slot is 127 and backside is 51.
What's funny is popping the dashboard causes a run-up for about 4-5 seconds, then things calm back down.
Of course, a couple of weeks ago, those numbers were much higher, but then again, ambient was up maybe 15° F.

Drive bay fan question

I'm pretty new to the g5 so this might be a dumb question.
Several times a minute the drive bay fan speeds up to around 2500rpm for about 10 seconds and then goes back down to 1000rpm. when this happens, istat shows the drive bay temp jumping from 32c to around 110c and then back down. Seems like a big temp jump in a matter of a few seconds. Hard drive reads a constant temp of 38c. Happens wether the cpus are idle or not. Is this normal or should I be concerned? Working in a quiet room it's kind of annoying.
Thank you mac gods
Jeff

Hi-
Replacing the sensor looks to be fairly easy.
Remove the hard drives, pry the board from the top of the case, unplug the cable from the logic board, and thread the cable out.
Install is the reverse, with two sided tape needed to attach the new sensor board to the tower top.
What I am unsure of, is whether or not Thermal calibration is necessary after this.
I believe that it won't be necessary, but it is a possibility.
If it were necessary, finding a copy of the Apple Service Disc (ASD) 2.5.7 would be necessary.
It is out there, so not a big worry......
The fans should be fine, as most fans are rated at 2,000-5,000 RPM for 60,000 or more hours.

Drive bay fans high rpm and whine.

High RPMs and a whining noise (i.e. fan noise) with iStat Pro widget displaying high (2,700+ rpms) for my drive bay.
I see that on my G5 one of the fans is located so that I can not blast it with canned air so as to rid it of dust build up... which is probably why there is a low decibel but high pitched noise when the drive bay fans rev up.
Any ideas on how to get to it without having to completely take my tower apart?
I've had my Energy system preference set to 'Highest' for a long time (since I read that overall this can prevent fan rpms from going extremely high) and it seems to have been okay.
But I'm guessing that over the years this one fan... which can not be blown off... has accumulated lots of dust that is causing the problem.
Any advice would be greatly appreciated.
Thanks.

"I've tried to monitor Console....."
Activity Monitor (AM--in Applications > Utilities) is the better reporter of what's causing excessive fan activity as it calculates the CPU usage of each process. If you have not launched AM before, its default settings will not show enough detail to help. However, all you need to do to get a full picture of the load on your processor is to change AM's "Show" option from "My Processes" to "All Processes." Once changed, that setting is retained. Looks like this:
Others are reporting heating issues and short battery runtime after upgrading to 10.6.8. They all had Parallels emulation software installed. If you use Parallels, see this:
http://kb.parallels.com/en/111541
It could be your culprit.

How to replace hard drive bay fan?

The fan in my G5 tower dual 1.8 Ghz in the top bay - optical/hard drive bay - has started to make noise. I bought a replacement, but I don't see any way to get the old one out. It sits in a little depression in the bay floor, and even if I got out the 3 screws holding it in place, it won't tilt far enough front or back to slide out.
Anyone know of any write-up anywhere about how to replace this fan assembly?

Those two fans (media bay fans) are only given a mention in the "official" service manual.
The drive fan and blower located between the optical and hard drives cannot be
replaced. You must replace the enclosure for these two parts.
Does this mean the "entire" enclosure, as in the tower, or just an enclosure for the fans held to the tray of the media bay?
I don't know.
Maybe someone who has done this can offer advice, but it seems that there is a need for someone to write a manual for that procedure.
Message was edited by: japamac

Powermac g5 7,3 drive bay fan: 2fan/4/7: drive bay error

Hello
I have a problem with my G5 Powermac. It is an G5 dual 2x2Ghz late 2004 7,3. 5 Gb. ram. Running Leopard. I am in a real trouble
A week ago, the system showed the black transparent screen of critic error ("press the power button for several seconds...") I started the system again and showed problems
I ran the hardware test disc. It showed "2fan/4/7: drive bay" error
Then I replaced the battery for a new one, then I reset the PMU and PRAM
Computer turned on. 15 min of normal use. It showed the error screen again.
Every time I reset the PMU, the fan works, but now it gets stopped in the gray window, and the apple logo is replaced by the "forbidden" icon
It´s a very complicated situation to replace this fan, because you have to disassemble the whole main board to replace the fan in the top floor (the drive bay) and I am not sure that it is a problem of the fan (plus, you have to find a second hand part, it is discontinued) and I think I could "hurt" the computer trying to replace it by my self
Sorry for my poor english. I´m from Spain
Any help will be appreciated
Thank You

I tried to boot it on safe mode this morning. It showed the forbidden icon on gray screen at startup. I waited for a while and tried again in normal mode. Booted perfectly and showed me the log about the crash. I place it here, but I can't give it format because I write from my iPod and it doesn't show the tools, only the text box:
Interval Since Last Panic Report: 2254 sec
Panics Since Last Report:          6
Anonymous UUID:                    063639A2-A1B3-4A98-8362-76E48FF06710
Thu May 12 10:52:10 2011
panic(cpu 0 caller 0x000AD128): simple lock (0x00453220) deadlock detection, pc=0x0003F910
Latest stack backtrace for cpu 0:
      Backtrace:
         0x0009CC88 0x0009D63C 0x00029DA0 0x000AD128 0x0003F910 0x00034384 0x00037594 0x00042490
         0x0003F868 0x0004086C 0x000BB934 0x000B63A4 0x000B48B8
Proceeding back via exception chain:
   Exception state (sv=0x59992000)
      PC=0x000B7EDC; MSR=0x00009000; DAR=0x61A96000; DSISR=0x42000000; LR=0x00035620; R1=0x61D9FD60; XCP=0x00000024 (0x900 - Decrementer)
      Backtrace:
0x0003560C 0x00035EB4 0x00036B7C 0x000B1DD4
   Exception state (sv=0x103ea00)
      PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)
BSD process name corresponding to current thread: kernel_task
Mac OS version:
Not yet set
Kernel version:
Darwin Kernel Version 9.8.0: Wed Jul 15 16:57:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_PPC
System model name: PowerMac7,3
System uptime in nanoseconds: 23328410180
unloaded kexts:
(none)
loaded kexts:
com.apple.driver.AppleHIDKeyboard     1.0.9b4 - last loaded 766564865
com.apple.iokit.IOUSBHIDDriver     3.4.6
com.apple.driver.AppleUSBMergeNub     3.5.2
com.apple.driver.PioneerSuperDrive     2.0.9
com.apple.iokit.SCSITaskUserClient     2.1.1
com.apple.driver.XsanFilter     2.7.91
com.apple.iokit.IOATABlockStorage     2.0.6
com.apple.driver.AppleUSBHub     3.4.9
com.apple.iokit.IOUSBUserClient     3.5.2
com.apple.driver.ApplePMU     2.5.6d2
com.apple.iokit.IOATAPIProtocolTransport     1.5.3
com.apple.driver.AppleK2SATA     1.0.4f2
com.apple.driver.AppleGPIO     1.3.0d0
com.apple.driver.AppleVIA     1.5.1d1
com.apple.driver.MacIOGPIO     1.3.0d0
com.apple.driver.AppleCPUThermo     2.0.0a0
com.apple.driver.AppleMPIC     1.5.3
com.apple.driver.AppleI2C     4.0.0d2
com.apple.driver.AppleK2SATARoot     1.0.5b1
com.apple.iokit.AppleGMACEthernet     1.5.9f1
com.apple.driver.AppleFWOHCI     3.9.7
com.apple.driver.AppleKauaiATA     1.2.1f4
com.apple.driver.AppleUSBEHCI     3.4.6
com.apple.driver.AirPortBrcm43xx     365.91.19
com.apple.driver.AppleUSBOHCI     3.4.6
com.apple.driver.AppleK2     1.7.2f1
com.apple.driver.AppleSPU     2.5.6d2
com.apple.driver.AppleMacRiscPCI     3.4.0
com.apple.driver.AppleCore99NVRAM     1.1.1
com.apple.driver.AppleFlashNVRAM     1.0.5
com.apple.security.seatbelt     107.12
com.apple.nke.applicationfirewall     1.8.77
com.apple.security.TMSafetyNet     3
com.apple.BootCache     30.4
com.apple.driver.DiskImages     199
com.apple.driver.AppleMacRISC4PE     2.0.4d9
com.apple.driver.AppleUSBComposite     3.2.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice     2.1.1
com.apple.iokit.IOSCSIBlockCommandsDevice     2.1.1
com.apple.iokit.IOBDStorageFamily     1.5
com.apple.iokit.IODVDStorageFamily     1.5
com.apple.iokit.IOCDStorageFamily     1.5
com.apple.iokit.IOSCSIArchitectureModelFamily     2.1.1
com.apple.iokit.IOFireWireFamily     3.4.9
com.apple.iokit.IOATAFamily     2.0.1
com.apple.iokit.IO80211Family     216.1
com.apple.iokit.IONetworkingFamily     1.6.1
com.apple.iokit.IOUSBFamily     3.5.2
com.apple.iokit.IOKeyLargo     1.7.2f1
com.apple.iokit.IOHIDFamily     1.5.7
com.apple.iokit.IOStorageFamily     1.5.6
com.apple.driver.IOPlatformFunction     1.8.7d5
com.apple.iokit.IOPCIFamily     2.6
I downloaded istat pro and installed it. Temperature is fine (51 top in both processors) rpm is right in all the fans BUT the drive bay rpm fan is constant: 1000 rpm without any variation
After 15 minutes, it freezes. No response. I only plugged the monitor and the keyboard and mouse (with cords. I stopped using the magic mouse since the problem appeared and the computer does not have Bluetooth included, I use an USB dongle that now is unplugged)
That's all the news for now

Should the removeable fan assembly fans be spinning?

10 Days ago my 2.5 GHz Quad Power Mac G5 froze and I had to cut the power. Upon trying to turn it back on, it wouldn't power up so I brough it to Apple for repair.
A few days ago I was told the logic board had been replaced but the problem wasn't totally fixed and they were awaiting another part as the problem was not totally solved. I picked it up today to find only the power supply had been replaced. Got it home, plugged it in, and there wasn't any video and after a little while some (all?) fans switched to running at full speed. It was very loud.
Brought it back and it was immediately looked at. Initially everything was fine but thankfully after a while the video got flakey. They replaced the video card and I brought it back home.
The good news is that at the moment it's working however I happened to notice that the fan assembly fans aren't spinning. Hardware Monitor reports activity for all the fans it's monitoring so this must be two it can't. I am speaking of the assembly that one would pull out to replace RAM and/or reset the PMU. I called the Apple store and spoke with the tech who said sometimes they don't spin at all and not to worry.
Well, I'm a little worried. If anyone has a current model G5 I'd appreciate if you could check your fans and tell me what you see. You can shine a flashlight through the front grill or pop open the side panel. I don't know if they used to spin and I don't know if they are intake or exhaust fans. The two exhaust fans at the back of the case seem to be working as does the video card fan.
Thanks.

By "DP2" I guess I was really saying, "I don't have a quad, which is liquid-cooled, and therefore may have different parameters for the fan behaviour than this Rev.A Dual-Processor 2GHz, (as opposed to Dual-Core 2GHz) and that said, this is the best answer I can come up with". We try to help.
Anyway... the fans in this G5 "DP2"(but maybe not the quad) are:
2 PSU fans - at the front, behind the silver grille, below the lower internal metal plate, inaccessible, not reported on by HM, presumably running at a constant speed
Next up, at the front, beside the puny internal speaker, is what HM calls the "PCI Slot Fan"(expansion slots), (currently, usually, running at 35%)
Moving to the back of the G5, at the top, with a silver wire guard, in front of the hard drives, is what HM calls the "Drive Bay" fan (currently, usually, running at 1000RPM)
Beside this Drive Bay fan, in a grey plastic housing, at 90deg, is what HM calls the "Main Logic Board Backside" (currently, usually, running at 20%) [this pulls air over the back of the main logic board, through the Memory Controller Heatsink]
Then, behind the CPU heat-sinks, at the very back, are the two fans that HM calls "CPU A (&B) Exhaust Fan" (speed very variable - "Specified Upper Limit - 3200 RPM", "Specified Lower Limit - 300 RPM")
In front of the CPU heat-sinks, the two fans that you are interested in, in a removable sliding plastic housing, which HM calls ""CPU A (&B) Intake Fan" (speed very variable - Limits as for Exhaust)
Just discovered, somewhat late in the day perhaps, that while HM (hopefully) reports actual temperatures from the various sensors around the G5, the fan speeds reported are not the actual speed of the fans, but the speed at which they are being instructed to spin by OS X. This could be verified by tilting the clear plastic deflector panel outwards, but keeping the locator pegs in place, and withdrawing the sliding "CPU Intake Fan" housing from the connector; the fans will stop - but HM will continue to report the OS X-instructed fan speeds.
From your description it sounds as though the sensor identifiers that HM is picking up from the quad are different(to the "DP2") and also it's just possible that HM is not fully optimised for either the hardware and/or OS X 10.4.6. (HM is at v.3.4 (March 2, 2006) and so should be quad-aware)
Anyway... "bottom line" - judging by this "DP2" and a quad sample of one(thanks KentZ!), your "CPU Intake Fans" probably should be turning all the time. As yours don't - it's possible your quad may have a different, but appropriate, Thermal Calibration.
If you load up the processors and observe the fans through the clear plastic deflector panel and they still never spin, (and also HM reports they should be) you must surely have either a bad connection to the fans or faulty fans. If they both never move, it would seem likely it's a bad connection.
Hope some of this helps. Post again if it doesn't.
Of course, a few more quad users' experiences (with 10.4.6)would be even better...

I want to replace the drive bays, quesiton about the connected fans...

Curious to know if the bios will report any faults if I replace either of the 5.25 drive bays, losing the connected fans? I dont need the ODD, and am thinking of fitting 2x 5.25 drive bay caddies in the top 2 bays. If so, can these be disabled in the bios, or will the system halt during post awaiting a keyboard input?

Hello,
I'm assuming you're talking about the TS140? The maximum supported drives on this system is 4. The cooling is the main reason for this. Lenovo does sell an adapter that has a small fan on the back of it to increase airflow inside the system. 5 drives were never validated on this system and if it were, I'm not sure how it would affect the temperature inside the chassis. It may work, but I would be concerned about the airflow / temperature inside the chassis with adding drives without an additional fan.

G5 startup: screens stay dark & drive (or fans) spinning at high speed

Good morning!
I'm new to the forum and I apologize if this has been answered in the past. I'm running a G5 and when I tried to start it, immediately the fans or drives start going into overtime. They are spinning very fast and will not slow down. In addition, the screens stay black. I made sure the G5 was not trying to recognize a disc in the tray, but it is empty. I've also disconnected all my equipment (firewire and USB)to make sure there was no "interference" with my external gear. I've tried to restart several times by holding down the startup button for 5 seconds, let the drives/fans stop spinning and then restarting, but the same thing happens. I've also tried to start in the SafeMode by holding down the Shift key, but again nothing changed. Any help is greatly appreciated!
Bart

I see there are many references to this problem. I've worked with apple care on at least three occasions. I've learned to apply each of the recommendations listed in the responses. When it happened again this morning, I was able to restart the computer with a combination of unplugging the power, re-seating the ram, resetting the smc and nvram. My question is, has anyone learned of a permanent fix for this problem? I would love to listen to whatever is recommended. Thanks.

IMac 2011, screen freezes and fans start spinning

Hello,
I have this really wierd problem with my iMac i5 2011 edition since a month or so...
A lot of times when I am downloading or watching a movie or playing games under OSX on my iMac my screen slowly freezes, it always starts with my finder and then te rest goes, I get the marble of death and shortly after that the fans start spinning like crazy, they start slow but after a minute or so they make a lot of nice. Take in mind then I am unable to use my iMac in anyway, the mouse moves but it doesn't respond to clicks and also my keyboard doesn't respond, I keep getting the marble of death still.
The wierd thing is that sometimes it doesn't do this for 2/3 days and sometimes it does it like 3/4 in an hour (have to restart manually). Also, this is very interesting, I have a version of Windows 7 installed on my iMac wich I use mainly for gaming and under windows it NEVER freezes in any kind, even when I game like 5/6 hours long straight.
Therefor I thought it must be a software problem so I did a complete system reboot 2 days ago but that didn't help, already froze 3 times since...
Can anyone help me? I still have 2 months of applecare but I have a LAN party soon so I am not to anxious to go 3 weeks without my iMac, maybe there is a simple solution that I am missing...

Some things you can try:
1. Try a new user account, create one in System Preferences -> Users and Groups, test to see if the issue still persists in this new user account, this will give us a lot of information. (if the problem is the same or it vanishes, let us know)
2. Make sure all your software is up-to-date, Apple Logo -> Software update.
3. Unplug all 3rd party devices, just keep in the necessary, Power, Keyboard + Mouse, no ethernet or external hard drives etc.
4. Reset the PRAM http://support.apple.com/kb/PH4405
5. Reset the SMC http://support.apple.com/kb/HT3964
6. Boot to the recovery partition (CMD + R on startup until you see a spinning cog with an apple logo, then let go) -> Choose english as the main language -> Choose Disk Utility -> Select your hard drive from the left pane of Disk Utility (NOT Macintosh HD, the one that will look similar to: 1TB ST3200WAJS) -> Select the 'First Aid' tab -> Bottom right of the window it will say 'S.M.A.R.T Status: ________' ... What does it say after smart status?
7. While still inside the Recovery Partition, select Macintosh HD -> First Aid (tab) -> Verify Disk -> Repair Disk (unless it says the volume Macintosh HD appears to be OK) -> Verify Disk Permissions -> Repair Disk Permissions (if there are differing permissions on the disk)
Let us know if the issue still persists, but make sure you do all of those steps correctly and post back as much information as possible (PRAM takes two chimes at startup, unplug the power cable for 15 seconds, plug it back in, wait 5 seconds, turn on... make sure you follow all articles)
Good Luck!
MiiCK

Media Bay Fan making a clicking noise

I have a powermac G5 tower. Just recently the media bay fan located next to the hard drive started making a clicking noise. If I turn off the computer for a while and turn it back on the fan does NOT make the noise. But after the computer runs for about 5 minutes the clicking starts again. The fan is running normally but the clicking is annoying. Does anyone know what might cause this? Will it damage the computer more if I run it like this? The only way to replace the fan is to replace the case and it's not worth it to me to do that. Any suggestions would be helpful because I can't find any info on the internet. Thanks for any help!

You should be able to a replace the fan without replacing the case, but I think the fan is going out.
There can be other things, sometimes something in the case may drop down just low enough to bump into the fan. So, make sure you use a high-powered magnifying glass and a heavy-duty flashlight to inspect the fan thoroughly. Spin the fan with your finger, see if you can move the fan forwards and backwards.
If there is enough forward and backward play in the fan the noise could be coming from that. After the fan heats up the electric motor becomes loose and the fan may be jutting out and hitting the case.

Can I use the 2nd Optical Drive Bay on my Mac Pro for an SSD?

Since I have no plans to add a second Optical Drive to my Mac Pro in the Second Optical Drive bay, I was wondering if I could put an SSD in that bay using a 2.5' to 3.5" drive carriage. Is this possible? Would it work? Would I be able to use it as my boot drive? Never tried this, so not sure if it would work.
Thanks in advance.

Your 2010 model has SATA wiring in that bay, so the SSD plugs right in.
Macs can boot from the drive specified in System preferences > Startup Disk.
You would need an adapter from 2.5 size of the drive to the 5.25 (CD drive) size expected, but since there are no moving parts, most folks just dump the drive in there without a bracket.
The biggest payback comes from establishing a Boot Drive with only System, Library, Applications, and the hidden Unix files including Paging/Swap. Putting the boot drive on an SSD is frosting -- it provides an incremental improvement over a spinning Boot drive.
A caution when establishing your drive -- some users have killed brand new SSD drives by cloning onto them. The manufacturers have not been helpful in telling us why this happens, but a clean Install may be a better way to proceed.

T430s 2nd Hard Drive Bay Caddy not working

Hi all,
I bought 2nd Hard Drive Bay Caddy for my T430s but it does not seem to work.
The HDDs I placed in it do not even start to spin, and they are not recognized by the laptop BIOS as also by my OSes, Windows and Linux.
The label on the caddy says it is P/N 26r9247, but at this stage I'm not sure is a compatible part or if I got just a faulty item.
Any feedback?
Solved!
Go to Solution.

That part number (26R9247) is for the older T60/61 Thinkpads. You need the Ultrabay III adapter. Look at 43N3412.

PC won't boot: fans stop spinning at start up!

Hi all
I have a Compaq CQ5335fr that worked just fine for a few years (3).
Then one day, it went off suddenly and wouldn't boot any more:
When I power it up, fans (CPU and chassis) start spinning for 15 seconds then they stop spinning. Only GPU fan keeps spinning. I have still blue and amber lights in the front of the desktop.
I usually push the power up button until it powers off. Then when I restart, same thing!
I tried the following with NO SUCCESS:
- clean & dust parts
- Reset CMOS
- Bought another PSU
- Played with DIMMS (put one by one, inverted etc.)
- Unplugged all components and replug one by one
- And a couple of other desperate things
- Put the hard drive in another computer to check if data are there: OK (although had "cant' access" errors in the beginning
Nothing worked.
NOW I NEED YOUR HELP TO LOCATE THE ISSUE IN ORDER TO SOLVE IT!
Thank you in advance.
This question was solved.
View Solution.

Hello again Moyiize.
I can't safely say if other motherboards would work or not. However, you should be able to get the same motherboard through HP. Here is a link to your computer's HP Part Surfer page. You should be able to order it there.
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Drive Bay Fan Slowly Spins Up

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