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Need HD connector pinout for Toshiba T4900CT

Discussion in 'Electronic Repair' started by mike, Dec 31, 2004.

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  1. mike

    mike Guest

    Need HD connector pinout for Toshiba T4900CT

    I can't find a HD cable for my T4900CT.
    I did junk a 4600 that has the same connectors.
    Error 22, so probablly different pinout.
    I could rewire the connectors if I could find
    the pinout for PJ305 , the Hard Disk connector on the
    motherboard of the T4900CT.

    Help??

    Thanks, mike
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  2. Paul Rubin

    Paul Rubin Guest

    Pinout is normal, you may be trying to use too large-capacity a drive.
    The maximum is 500 meg, if I remember right.
     
  3. mike

    mike Guest

    Please explain "normal" It's a tiny 50-pin surface mount connector.
    Looks kinda like the inside guts of centronics connector that's
    been shrunk a lot.
    There's a mouse connector, beeper and some leds hooked into the same
    cable as the HD on the 4600. Not surprised it doesn't work.

    Disk capacity is irrelevant, cause it ain't plugged in.

    Restoring the critical part that you snipped from my original post:

    I could rewire the connectors if I could find
    the pinout for PJ305 , the Hard Disk connector on the
    motherboard of the T4900CT.

    Again, Need the connector pinout for the motherboard connector.
    mike

    --
    Return address is VALID.
    Wanted, Slot 1 Motherboard
    500MHz Tek DSOscilloscope TDS540 Make Offer
    http://nm7u.tripod.com/homepage/te.html
    Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121
    Bunch of stuff For Sale and Wanted at the link below.
    http://www.geocities.com/SiliconValley/Monitor/4710/
     
  4. Paul Rubin

    Paul Rubin Guest

    Oh whoops, I thought you meant the drive connector.

    I had a T4600 and there was a hardware manual for it that had stuff
    like that. It's probably gone from Toshiba's ftp site by now (it
    predated the web) but it's sort of possible that I have it archived.
    Or maybe it was a printed manual. My memory is hazy on this. Anyway,
    I'll take a look around for it.

    I sold the T4600 to a friend some years ago who used it until it
    eventually stopped working. It's sort of possible that the carcass is
    still around. If you really want to scrounge parts from it, I can
    inquire if it's available (you'd have to pay for shipping, but I doubt
    that he'd want actual money for the computer). My guess, though, is
    that it hasn't been thrown out but is buried under a mountain of junk
    and will be impossible to find.

    A T4900 even if working has to be close to worthless these days. You
    can probably find a more modern machine on ebay for less than the
    hassle of messing with that connector is worth.
     
  5. mike

    mike Guest

    I have a T4600 with the P31 error problem.
    Need the pinout for the T4900CDT.

    The T4900CDT is easily worth the trouble to solder on 50 wires.
    Just need to know which pins to solder 'em to.
    mike

    --
    Return address is VALID.
    Wanted, Slot 1 Motherboard
    500MHz Tek DSOscilloscope TDS540 Make Offer
    http://nm7u.tripod.com/homepage/te.html
    Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121
    Bunch of stuff For Sale and Wanted at the link below.
    http://www.geocities.com/SiliconValley/Monitor/4710/
     
  6. Mike,

    I think that you are not looking at the hard drive itself but at a
    "caddy". The caddy can be opened and the hard drive is inside it.

    All 2.5" IDE hard drives have a standard (with one exception) interface
    connector. It's 44 pins, then a gap, then 4 more pins. The 44 pins are
    the standard 40-pin IDE interface (same as on a desktop 3.5" drive, just
    with a different connector) and 4 power/ground pins. The extra 4 pins
    are used for drive configurations (master/slave/cable select). The only
    aspect of this interface that is totally non-standard is the use of the
    4 pins for master/slave/CS configuration, which varies by drive model.
    Otherwise, everything is standard, going back to at least the early 1990's.
     
  7. FoulDragon

    FoulDragon Guest

    Does the 4900CT you have contain a cable which goes to the existing hard drive
    which you could analyze for a pinout?

    I did a drive swap on a T1910 and T1950, and while perhaps later models, seem
    to recall they used the standard 44-wire laptop drives; in the 1900 series
    models, as I recall, the drive pretty much slid onto the connector on the
    board, no real cable (at least no visible one, you didn't need to dissect much
    to remove the hard drive). I think a BIOS update was needed for large drives,
    but 500M was more than adequate for me.

    Laptop drives are 44 pin cables, and an extra block of four pins I think may
    have to do with master-slave addressing
     
  8. mike

    mike Guest

    Thinking is good. But not reading is proving rather frustrating for me.
    No, I don't want a hard drive.
    No, I don't want a caddy. (well, if someone had a caddy at a reasonable
    price, I could go for that) There is obviously some plastic involved,
    but I can improvise that. What I can't improvise are the connections
    between the motherboard and the drive. (I'm just too lazy to reverse
    engineer it)
    I want the PINOUT for the connector on the motherboard of a Toshiba
    T4900CDT. IDE signal desgnations by pin number. ON THE MOTHERBOARD END.
    Here's a picture of the connector.

    http://nm7u.tripod.com/homepage/con1.jpg

    If that's a standard, I'd like to know where to look it up.

    So, if you had a computer with the pictured connector and wanted to hook
    up an IDE hard drive, how would you ask the question so people could
    understand that you needed information to make such a cable??? I've
    failed at that task...four times now.
    mike


    --
    Return address is VALID.
    Wanted, Slot 1 Motherboard
    500MHz Tek DSOscilloscope TDS540 Make Offer
    http://nm7u.tripod.com/homepage/te.html
    Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121
    Bunch of stuff For Sale and Wanted at the link below.
    http://www.geocities.com/SiliconValley/Monitor/4710/
     
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