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HP Deskjet 600C disassembly

Discussion in 'Electronic Repair' started by Kevin C., Feb 14, 2004.

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  1. Kevin C.

    Kevin C. Guest

    My printer won't turn on. I had the adaptor voltmetered at Fry's and it
    seems to be working (tested to 36.0V, the spec on the power brick says 30.0V
    but the guy said it was normal, I don't know much about the physics).

    So I tried to take apart the printer itself to see if anything had exploded.
    I managed to pry off the back where the cables plug in only to find some
    sort of PCB. The capacitors and stuff look ok, nothing leaking or burned. I
    then wanted to examine the power button contacts but I can't figure out how
    to pry off the panel. I actually have it about halfway off, loosened from
    the top and bottom (the left side is free), but there is something on the
    right (outer) side that is keeping it latched down. I can't see it and I
    don't want to break anything. Anyone know what to do?
     
  2. James Sweet

    James Sweet Guest

    Realistically if you have power at the printer and it won't turn on, there's
    very little chance you'll be able to fix it yourself, inkjets are pretty
    much throwaway items these days unfortunatly.
     
  3. Charlie+

    Charlie+ Guest

    as underneath my scribble :

    If anything like the HP 660c this might be of assistance:
    http://www.cag.clara.co.uk
    follow link
    Open circuit Voltage sounds about right -Charlie+
     
  4. Jerry G.

    Jerry G. Guest

    First off all, the expression, "leaky capacitors", usually means in simple
    context, that the capacitors have some DC resistance, thus are electrically
    leaky, and are not leaking a liquid of some kind. But, I have seen some
    caps become so badly defective that they do leak some of their electrolyte
    out. When they get to this point, there are some very serious problems.

    Normally, unless there was a very bad short somewhere, you will not see
    defective components by eye. As for troubleshooting the boards in these
    printers, you can not do this yourself, unless you had a very sophisticated
    set-up with the proper service information such as the schematics, and
    engineering data. Even the manufactures don't bother to do board level
    service in these products, due to the low cost of total replacement. This is
    why with these printers, they give the customer a new printer during the
    warranty period. After the warranty, they tell you to buy a new one. The
    cost estimate for repairs would exceed the cost of a new one. Technical
    staff have to be paid to do the work.

    As for the value of the effort to service a printer of most any kind, unless
    it is a very expensive model, the manufactures do not support service for
    them. You will find that it is impossible to even by spare service type
    parts for these printers, due to the cost on the manufactures part to have
    the infostructure to inventory, and distribute these parts.

    The bottom line is, if the printer is not a very expensive model, it would
    be considered a throw-away.

    --

    Greetings,

    Jerry Greenberg GLG Technologies GLG
    =========================================
    WebPage http://www.zoom-one.com
    Electronics http://www.zoom-one.com/electron.htm
    =========================================


    My printer won't turn on. I had the adaptor voltmetered at Fry's and it
    seems to be working (tested to 36.0V, the spec on the power brick says 30.0V
    but the guy said it was normal, I don't know much about the physics).

    So I tried to take apart the printer itself to see if anything had exploded.
    I managed to pry off the back where the cables plug in only to find some
    sort of PCB. The capacitors and stuff look ok, nothing leaking or burned. I
    then wanted to examine the power button contacts but I can't figure out how
    to pry off the panel. I actually have it about halfway off, loosened from
    the top and bottom (the left side is free), but there is something on the
    right (outer) side that is keeping it latched down. I can't see it and I
    don't want to break anything. Anyone know what to do?
     
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