Look at some schematics

Discussion in 'General Electronics Chat' started by Hornnumb2, Jul 7, 2016.

  1. Hornnumb2

    Thread Starter New Member

    Jan 17, 2013
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    I have a Graphtec cutter that the usb port won't respond, can somebody look at the schematics and see if all the db25 port and usb run off the same processor. Is it worth me buying a different cable to try. Thanks Michael

    Here is the link to schematic: https://www.dropbox.com/s/3xxa1fep26dh7y9/fc5100.pdf?dl=0
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
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    I would guess the other ports run off the same processor, is it possible to try the RS232 for a test?
    Max.
     
  3. Hornnumb2

    Thread Starter New Member

    Jan 17, 2013
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    Not sure if processor is the right word, the cutter powers up and will do a test cut from the control panel but I am just not getting any communication to it from the laptop. Thanks Michael
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
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    I see now the USB is connected to U5 and the RS232 to U4.
    Does the laptop program control the machine or will it run stand-alone?
    The RS232 may be just for program down load or can you control the machine with it?
    Just a guess as not familiar with that machine, it looks like old technology?
    Max.
     
  5. Hornnumb2

    Thread Starter New Member

    Jan 17, 2013
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    It has 3 different inputs, rs 232, usb and old style printer port. The only thing you can do from the machine is some built in test cuts and they work but I just can't get the pc to connect. I get a unrecognized device device message through usb, I can pick up a db25 to usb cord tomorrow to try the other port but didn't want to waist the money if they run through the same communication chip. This is a vinyl cutting machine like used for making signs and decals.
     
  6. MaxHeadRoom

    Expert

    Jul 18, 2013
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    What I was getting at are the serial ports just for downloading programs?
    The RS232 is a different IC, so if the port is dead, the RS232 may work.
    Max.
     
  7. Hornnumb2

    Thread Starter New Member

    Jan 17, 2013
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    Thanks for the info, I will pick up a db25 tomorrow and see if that works.
     
  8. MaxHeadRoom

    Expert

    Jul 18, 2013
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    From the apparent pin out you will need a Null-Modem cable not pin for pin, you also may have a problem now getting a DB25 to db9 cable, Some while ago I picked up a test cable that had db9 and db25 on both ends in a Null modem fashion, comes in very handy.
    Max.
     
  9. tracecom

    AAC Fanatic!

    Apr 16, 2010
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    Are you sure you have the proper driver installed? Has something changed since the last time the cutter worked?
     
  10. Hornnumb2

    Thread Starter New Member

    Jan 17, 2013
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    I bought the cutter from a sign shop and it had no communication at the time, I sent the motherboard off to a board level repair place but with out the schematics(just found those last night)they just looked the board over and reflowed the joints on the usb and fixed a broken trace on it. I was hoping that fixed it, before when usb got plugged in you got nothing. Now it sees the port but cant recognize what the device is.
     
  11. MaxHeadRoom

    Expert

    Jul 18, 2013
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    In the Machine dialog, does it give you a choice of options as to data input port?
    Max.
     
  12. Hornnumb2

    Thread Starter New Member

    Jan 17, 2013
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    I dont think so, I figure all ports are active.
     
  13. EM Fields

    Member

    Jun 8, 2016
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    Go here for a user manual and drivers.
     
  14. Hornnumb2

    Thread Starter New Member

    Jan 17, 2013
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    Already have the driver. Thanks
     
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