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IBM Think Pad upgrade

Discussion in 'Computers, Hardware, and Operating Systems' started by WA9SVD, May 11, 2012.

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  1. WA9SVD

    WA9SVD Ham Member QRZ Page

    I use an IBM THinkPad T22 for Amateur Radio applications' Windoze XP Pro with latest updates.
    The original memopy was 128 MB, upgraded with an additional 128 MB when I bough the machine. The service manual says it will take a maximum of 512 MB, and the modules listed state SD-RAM, PC-133 as upgrades.

    I purchased a 512 MB SD-RAM PC-133 module through Amazon, and it won't work! If I install the single module, I just sat a series of three beeps, with no boot up. If I add the module with one of the original modules, I don't even get the beeps. I noticed that the original memory (ine original from IBM, and one from INfineon, were both PC-100 modules.l
    Do the SD-ROM modules need to be installed in pairs? Or is the 512 MB module I received defective? I realize even 512 MB is barely enough to support XP, but it's far better than only 256 MB.
  2. K4NYA

    K4NYA Ham Member QRZ Page

    I'll bet they do need to be installed in pairs. Most RAM nowadays does.
  3. WA9SVD

    WA9SVD Ham Member QRZ Page

    Apparently not. Remember, this is SD-RAM. The machine works with ONE <128MB> module installed; although it came with two <128 MB> modules installed. (One of the modules is an aftermarket product.) Originally, the OEM product from IBM shipped with a single 128 MB module. I presumed the machine would show a modicum of improved performance with 512 MB of memory. oer its current 256 MB. (Barely suitable for Win XP.) . The strange thing is that IBM specified PC-133 memory up to a single 512 MB module, but the original memory modules were all PC-100. I suspect the new module may be defective.
    Last edited: May 11, 2012
  4. AC0H

    AC0H Premium Subscriber QRZ Page

    Double check the BIOS on the machine and ascertain if it will support PC133...just in case.
    If you try and mix PC100 and PC133 the memory will only run at the PC100 rate.
    I'm betting on a bad SIMM.
  5. WA9SVD

    WA9SVD Ham Member QRZ Page

    'm now thinking about a bad SIMM. The IBM Service manual specifies PC-133 modules, with a 512 MB maximum,) and the 128 MB modules worl individuals as well together. They ARE PC-100 mudules, even if that's what's spec'd by IBM in their service manual. The 512 MB /PC133 module won't work in any configuration. I'm now leaning to a memory module failure.
  6. WA9SVD

    WA9SVD Ham Member QRZ Page

    There's nowhere in the BIOS that specifies the type of memory for the laptop. If the SIMM is defective, then it will be returned. I'd even rather run aPC-100 run at it's proper speed if I can get the memory upgraded. But if IBM spec's PC-133 memory, I'd think the replacement would have been acceptable,and operate as well.

    Obviously, the PC-133 SHOULD function properly, as spec'd in the IBM service manual. Id didn't not.
  7. KD5SPX

    KD5SPX Ham Member QRZ Page

    To get 512mb you must install 2 x 256 mb modules.
  8. WA9SVD

    WA9SVD Ham Member QRZ Page

    Then why does IBM designate a single, 512 MB PC-133 module as a suitable "FRU" (Field replaceable Unit) for this particular laptop? IBM states that 512 MB is the maximum it can handle. and lists a 512 MB / PC-133 module as an upgrade option. Or at least so says the service manual; there's NO mention of the need to install memory modules in pairs.

    Single memory modules (such as the 128 MB module that was part of the OEM machine) work fine without being paired with another module.

    Please state your reasoning or experience to the contrary. My QUESTION is whether current "PC-133" memory may not work in this situation, or if the memory module is defective.
  9. AC0H

    AC0H Premium Subscriber QRZ Page

    Turns out SPX is right.
    The T-22 will take PC-133 and a max of 512MB but it has to be a pair of 256MB SIMMs.

    At least according to Crucial.
  10. WA9SVD

    WA9SVD Ham Member QRZ Page

    I would tend to think IBM would know more of what the machine needs than an aftermarket memory company. It's just strange that IBM specifies PC-133 memory in the Service module, but they installed a single (128 MB) PC-100 memory module from the factory.
  11. W9GB

    W9GB Ham Member QRZ Page

    I had to deal with IBM / Lenovo parts when the first PCs were released.
    IBM may say that in a "kit" and the kit may contain TWO 256 Mb memory sticks.

    They also had a habit of shipping ONE memory stick (512 Mb) that was an IBM speciic part. ..
    not mfg. by anybody else. They did that when IBM-AT was released with piggy-back DIP memory chips !
  12. WA9SVD

    WA9SVD Ham Member QRZ Page

    While the info on the Crucial site may actually be correct, it's nowhere in the IBM User's Manual or Service Manual that specifies a maximum of 256 MB per memory slot. (2 memory slots @ 256 MB= the 512 MB maximum for the machine.) I'll try exchanging the single 512 MB module for 2x 256 MB modules. 512 MB is hardly optimal for XP, but it's far better than 256 MB.
  13. AC0H

    AC0H Premium Subscriber QRZ Page

    Yeah, The neutralization procedure in the manual for my Kenwood TS-520 says start with a particular band, 10m I think off the top of my head.
    The service manual says different, 15m I think.
    What do you do?

    In your case I may trust Crucial more because they have to deal with the upset customers when it doesn't work.
    IBM doesn't on a laptop that hasn't been built in 10 years.
  14. WA9SVD

    WA9SVD Ham Member QRZ Page

    Well, I'm sure the IBM manuals were published when the T22 WAS a current model, and IBM had to address "upset customers" as well; I would think many customers sought aftermarket memory upgrades and had similar issues. (Of course, all THAT has been shuttled off to Lenovo.)
    When I get the 2x256 MB modules, I'll let everyone know how that works. Now, I hope PC-133 memory speed WILL work with the T22!
  15. K2NCC

    K2NCC Premium Subscriber QRZ Page

    Or forgo the issue by putting your money into a different computer. For about $100, you can go to your closest craigslist and get a newer and more powerful laptop. (It hasn't been "IBM" for a while now!)

    If you just got to have that clunker, perhaps there's a BIOS update that will patch the previous RAM limit. I've had several that didn't see all or any of the upgraded memory, but a BIOS flash later, all is good.
  16. WA9SVD

    WA9SVD Ham Member QRZ Page

    Well, perhaps even Crucial is mistaken.

    Neither one nor two 256 MB PC-133 modules will work; the machine refuses to boot. (The machine works fine with oine or two 128 MB PC-100 modules.

    Now, I have to try to return the two 256 MB (PC-133) modules for PC-100 modules, IF the vendor is willing.\ So much for believing the documentation on the IBM Service module. Almost as bad as Microshaft.
  17. GHZ24

    GHZ24 QRZ Member

    t22 thinkpad memory

    Lenova website clearly states
    This is the lenova page I found for your computer.
    I still have a IBM 600x (think pad 500 MHz) made just before the t series It can't handle pc133 and I think yours needs pc100 like mine.
    I'd look around at the lenova site they have a lot of drivers/patches and info on your laptop. I think they have a "crack" that allows any manufacturers mini PCI card to be installed, I case you would wanted a built in G or N wifi card instead of the

    "Integrated Mini-PCI V.90 modem(3) or Intel or 3Com combination V.90 56Kb modem and 10/100 Ethernet LAN connection, depending on model ".

    BOIS errors normally prevent any but IBM cards. ( at least on mine)

    Yes I still use my 500 MHZ dinosaur and when I get a upgrade it will be to another IBM/Lenova.

    I hope that helps keep yours useful longer.
  18. WA9SVD

    WA9SVD Ham Member QRZ Page

    I'm going to try to exchange the two PC-133 modules for PC-100. The Owners and Service manuals from IBM specify PC-133, however. Crucial also listed PC-133 as the appropriate memory speed chips for the T-22.
  19. KD0LKW

    KD0LKW Ham Member QRZ Page

    PC133 RAM is backwards compatible with PC100. If the machine doesn't support PC133 it will automatically back the timing to PC100. You could probably find used memory for this laptop dirt cheap on ebay.

    BTW IBM hardware division was bought by Lenovo.
  20. WA9SVD

    WA9SVD Ham Member QRZ Page

    The computer was manufactured under the IBM trademark, even though Lenovo had been actually making the machines for IBM for several years before Lenovo was spun off.

    For whatever reason, the PC-133 memory modules wouldn't allow the machine to boot; there's always a chance that BOTH modules are defective, but the odds are a bit unlikely. The original 128 MB modules (one was apparently the IBM OEM module; the other an upgrade add-on) were PC-100.
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