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My G3 blue and white machine, openfirmware 3.1.0 appears when booting up.
- Thread starter jackylin
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More info would be helpful.
1. New-to-you machine?
2. Good battery?
3. Rev.1 or Rev.2 mobo?
4. RAM? HD(s)?
5. Booted fine before?
Remove all but video card and none than basic necessary externals.
Then retry.
Will it boot from OS installer CD? (Holding down “c” key.)
1. New-to-you machine?
2. Good battery?
3. Rev.1 or Rev.2 mobo?
4. RAM? HD(s)?
5. Booted fine before?
Remove all but video card and none than basic necessary externals.
Then retry.
Will it boot from OS installer CD? (Holding down “c” key.)
The machine power on will beeps once at startup then startup voice ring
As Amethyst1 and macos9rules have mentioned… if there’s an Adaptec SCSI card installed - with a boot drive attached… might be source of your prob. Remove it and attempt to boot from another, internally attached HD or OS installer CD. You can re-install SCSI card later with appropriate driver.
Try the PRAM zap - per swamprock.
Might need to remove and ‘re-seat’ all RAM too. (Per that one “beep” if the machine has been sitting for a long period of time.) “Beep” instead of a “BONG” chime? AND might try with only one stick of RAM and if that works… then add sticks back in, one-at-a-time, booting as you go, to test for a bad stick.
If all RAM checks out okay… might be time for PMU reset.
*Rev.1 or Rev.2 mobo might not be of any importance here - but this is what a Rev.2 CMD chip looks like. (Notice the CMD 646U2-402 numbered controller chip.) No 646U2-402 number on your CMD chip = Rev.1 board.
Have you added any new hardware to the machine lately?
Try the PRAM zap - per swamprock.
Might need to remove and ‘re-seat’ all RAM too. (Per that one “beep” if the machine has been sitting for a long period of time.) “Beep” instead of a “BONG” chime? AND might try with only one stick of RAM and if that works… then add sticks back in, one-at-a-time, booting as you go, to test for a bad stick.
If all RAM checks out okay… might be time for PMU reset.
*Rev.1 or Rev.2 mobo might not be of any importance here - but this is what a Rev.2 CMD chip looks like. (Notice the CMD 646U2-402 numbered controller chip.) No 646U2-402 number on your CMD chip = Rev.1 board.
Have you added any new hardware to the machine lately?
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hi everyone:
1.I Have remove SCSI card,but this issue still.
2.Try the PRAM zap - per swamprock.--->How to try??
3.My chip was 646U2,I think it is Rev.2 mobo.
3.For the power on voice,I had put the video at Youtube,Please help to listen.
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That single tone should mean that no RAM is recognized.
(Could mean other hardware issues, too... )
The B&W G3 is often known to be very finicky about correct memory.
How much memory is installed?
Have you tried booting with only one memory stick installed?
I would try just a single stick, then try to boot.
If you again get the open firmware screen, try a couple of reset commands on that screen (these are simple commands that I always use whenever I work on a powerPC Mac) :
type reset-nvram, then press enter. You should get "ok"
then, type set-defaults, press enter again, and you should again get "ok"
finally, type reset-all, press enter. Your G3 should immediately reboot.
Any change this time?
You could also try a PRAM reset, which is Command-option-P-R (an older Apple keyboard will not say command, but will have an Apple symbol, or a loopy square with loops on each corner. The Control key is not used for this reset - so the first two keys to the left of the spacebar, plus the P and R. restart while holding those keys. You SHOULD get a boot chime - that startup sound that you already mentioned. If you get that chime, continue to hold those same 4 keys until you get the chime 2 more times, then release the keys to let it boot normally (hopefully!) The time between the boot chimes can be 30 seconds or more, so be patient. I would give up if you don't get the second chime within 5 minutes.
Let us know if that helps at all...
(Could mean other hardware issues, too... )
The B&W G3 is often known to be very finicky about correct memory.
How much memory is installed?
Have you tried booting with only one memory stick installed?
I would try just a single stick, then try to boot.
If you again get the open firmware screen, try a couple of reset commands on that screen (these are simple commands that I always use whenever I work on a powerPC Mac) :
type reset-nvram, then press enter. You should get "ok"
then, type set-defaults, press enter again, and you should again get "ok"
finally, type reset-all, press enter. Your G3 should immediately reboot.
Any change this time?
You could also try a PRAM reset, which is Command-option-P-R (an older Apple keyboard will not say command, but will have an Apple symbol, or a loopy square with loops on each corner. The Control key is not used for this reset - so the first two keys to the left of the spacebar, plus the P and R. restart while holding those keys. You SHOULD get a boot chime - that startup sound that you already mentioned. If you get that chime, continue to hold those same 4 keys until you get the chime 2 more times, then release the keys to let it boot normally (hopefully!) The time between the boot chimes can be 30 seconds or more, so be patient. I would give up if you don't get the second chime within 5 minutes.
Let us know if that helps at all...
Hi Sir:
For ram issue,i had only one,i try to change slot still no improve.
I tried to use reset-nvram & set-defaults & reset-all & try to PRAM reset still no improve.
I try to use mac-boot got pic2 status.
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If you still get that single beep - and you have just one memory stick, I would suggest your memory stick is bad. The only way to test (or fix) this is to try another memory stick. You DO need to make sure the memory stick that you have is correct for your G3.
Check the battery on the logic board. It needs to be at least 3.3 VDC, a low or dead battery might contribute to the problems that you are having.
Check the battery on the logic board. It needs to be at least 3.3 VDC, a low or dead battery might contribute to the problems that you are having.
Hi Everyone
Today,I Reinstll logic board at other G3 blue and white machine ,As Power on ,the Screen is black & can not got any beep.
1.I Reinstall VGA Board & Ram Still no improvement.
2.I Reset the CUDA Bottom & Machine then got image & into operation system.
But sometimes machine will hang up & Reboot PC still got black Screen.
At last ,I Remove power cable & Wait 20 mins & Power on PC ,Now is Normal.
For Screen is black & can not got any beep issue,is Power or RAM or Other Issue?Can give some ideas?
Thanks
Jacky
Today,I Reinstll logic board at other G3 blue and white machine ,As Power on ,the Screen is black & can not got any beep.
1.I Reinstall VGA Board & Ram Still no improvement.
2.I Reset the CUDA Bottom & Machine then got image & into operation system.
But sometimes machine will hang up & Reboot PC still got black Screen.
At last ,I Remove power cable & Wait 20 mins & Power on PC ,Now is Normal.
For Screen is black & can not got any beep issue,is Power or RAM or Other Issue?Can give some ideas?
Thanks
Jacky
It still sounds like possible bad memory. Do you have spare memory sticks, preferably from a known working computer. Can you swap the known good memory into the bad computer and see if that fixes the problem. If it does not, have you tried re-installing mac os or are you still using the same installation you've always been using. If it is the second i would recommend trying to reinstall mac os.
