A5000 and A7000 guide needed

Arc/RPCs, peripherals, RISCOS operating system & ARM kit eg GP2x, BeagleBoard
scuzz
Posts: 28
Joined: Sat Feb 25, 2017 9:12 pm

A5000 and A7000 guide needed

Postby scuzz » Fri Nov 17, 2017 10:46 pm

Hi
I have issues with battery removal and replacement on my A5000 and A7000 and was wondering if there was an easy to follow guide anywhere on both the dismantling of these machines and the replacement of the batteries.

I have included my own web pages for the machines created these last few days showing the batteries. I am reluctant to remove at the moment as the machines work fine. But I know it has to be done.

I also include for interest images of my other machines plus two recent battery removal and checks with the A3010. I am still on the hunt for the Ultimate power supply.

All help appreciated.

Acorn A5000

http://www.scuzzscink.com/amiga/scuzzbl ... 7_1701.htm

Acorn A7000

http://www.scuzzscink.com/amiga/scuzzbl ... 7_1702.htm

Acorns : General

http://www.scuzzscink.com/amiga/scuzzbl ... 7_1703.htm

A3010: Ultimate interface

http://www.scuzzscink.com/amiga/scuzzbl ... 7_1704.htm

A3010: Battery check

http://www.scuzzscink.com/amiga/scuzzbl ... 7_1705.htm

scuzz
http://www.scuzzscink.com/amiga/a_amiga_inframe.htm

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danielj
Posts: 5346
Joined: Thu Oct 02, 2008 4:51 pm
Location: Manchester

Re: A5000 and A7000 guide needed

Postby danielj » Sat Nov 18, 2017 12:42 am

Cut the batteries out with side cutters or anything that will cut the legs off them (e.g. https://www.ebay.co.uk/i/302296865655). Will follow up with replacing tomorrow. Get them out now, however!

d.

ajw99uk
Posts: 108
Joined: Fri Sep 29, 2017 3:00 pm
Location: W Yorks, UK

Re: A5000 and A7000 guide needed

Postby ajw99uk » Sat Nov 18, 2017 6:58 am

I used the guidance from Bernard Veasey to help with replacing the battery in RiscPC, A5000 and A540.

http://www.bapfish.org.uk/cmos.htm
http://www.bapfish.org.uk/acorn/cmos.html

Having almost no prior soldering experience, I won't say I made a neat job of it but the new battery does the job.

And let's repeat: do it now. By the time you can see leakage, there may be a lot more work needed to repair unseen damage.
Last edited by ajw99uk on Sat Nov 18, 2017 11:00 pm, edited 1 time in total.
Running RISCOS: A5000, A540, R140, RiscPC, RPi B
Running *nix: SGI Fuel & Indigo2, RPi2, x86, amd64, RiscPC, A540, R140

scuzz
Posts: 28
Joined: Sat Feb 25, 2017 9:12 pm

Re: A5000 and A7000 guide needed

Postby scuzz » Sat Nov 18, 2017 11:38 am

The problem is that I have no information on how to strip either of these machines. I was kinda hoping there was a webpage with some images of the way I remove the drive cradle/daughter board. I can't take a flyer at it to be honest. If I lose the batteries I lose the functionality. I do want the batteries off but first I have to get to them. Its that that is the biggest issue and I can't find a strip down guide at the moment. The A7000 is the worst cus I cannot even see the motherboard.

scuzz

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davidb
Posts: 1901
Joined: Sun Nov 11, 2007 10:11 pm
Contact:

Re: A5000 and A7000 guide needed

Postby davidb » Sat Nov 18, 2017 12:38 pm

There's some information in this thread. Basically, it shouldn't be hard to lift the drive cradle up and out of the case once any screws attaching it have been removed, though I can understand if you want more precise instructions.

ajw99uk
Posts: 108
Joined: Fri Sep 29, 2017 3:00 pm
Location: W Yorks, UK

Re: A5000 and A7000 guide needed

Postby ajw99uk » Sat Nov 18, 2017 4:55 pm

scuzz wrote:The problem is that I have no information on how to strip either of these machines. I was kinda hoping there was a webpage with some images of the way I remove the drive cradle/daughter board.
...
Its that that is the biggest issue and I can't find a strip down guide at the moment. The A7000 is the worst cus I cannot even see the motherboard.

Can't help there but I should be able to take pics of an A5000 "teardown" as it's already partly in pieces and I need to take out the drive tray to reassemble with a different HD fitted anyway.

EDIT: see if this helps for the A5000 http://sarje.eu5.net/computing/A5000disassembly/ Looks like you've got to my assumed starting point, which is good.

Does your A5000 have an EMC shield under the lid, removed by pulling sideways? I've seen it mentioned in a couple of podule installation instructions as being present in early production models, but never seen one 'in the flesh' (not that I've had chance to look inside many A5000s).
Last edited by ajw99uk on Sun Nov 19, 2017 2:50 pm, edited 1 time in total.
Running RISCOS: A5000, A540, R140, RiscPC, RPi B
Running *nix: SGI Fuel & Indigo2, RPi2, x86, amd64, RiscPC, A540, R140

ajw99uk
Posts: 108
Joined: Fri Sep 29, 2017 3:00 pm
Location: W Yorks, UK

Re: A5000 and A7000 guide needed

Postby ajw99uk » Sun Nov 19, 2017 12:06 am

See also https://youtu.be/5M6OIOIND-0 (not mine, I should say, and I have always left the backplane attached to the drive tray) for disassembly and, for future reference in case others need it, https://youtu.be/OJtsFwImGmE shows battery replacement.
Running RISCOS: A5000, A540, R140, RiscPC, RPi B
Running *nix: SGI Fuel & Indigo2, RPi2, x86, amd64, RiscPC, A540, R140

ajw99uk
Posts: 108
Joined: Fri Sep 29, 2017 3:00 pm
Location: W Yorks, UK

Re: A5000 and A7000 guide needed

Postby ajw99uk » Sun Nov 19, 2017 2:57 pm

Re the EMC shield, again for others' reference, this from the service manual at https://archive.org/stream/Acorn_A5000_ ... s_djvu.txt

Some models of the A5000 have an EMC case shield (item 29) which fits over the case. To remove this
shield, unscrew the five fixing screws on the right hand side of the unit, as seen from the rear. The shield has
interleaved tabs which fit into the edges of the case.
Slide the shield off the main unit carefully; there is a
hole on the top to help you slide the shield off by
inserting a screwdriver.
Running RISCOS: A5000, A540, R140, RiscPC, RPi B
Running *nix: SGI Fuel & Indigo2, RPi2, x86, amd64, RiscPC, A540, R140


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