GE/Marquette T1900 Treadmill Control Circuits

Discussion in 'General Electronics Chat' started by MAlvis, Apr 9, 2016.

  1. MAlvis

    Thread Starter New Member

    Apr 8, 2016
    1
    0
    Does anyone have any data on the control circuits used in the GE/Marquette T1900 Treadmill?
    The control interface is RS-232.
    The Treadmill is lightly used but stopped responding to the start motor input.
     
  2. IamJatinah

    Member

    Oct 22, 2014
    70
    14
    Hi There,

    I haven't seen this animal yet, and wouldn't mind a pic of it. Off the top of my head, have you "split" the system checking for RS-232 to and from the lower board? You will need an O-Scope or RS-232 adapter, reader, snooper, analyzer.

    Most serial lines have specific drivers like the sn75als180 is it? These can indeed take a dump from time to time, and are usually in Transmit/Receive pairs near the connector placement.

    I have seen a lot of "digital"(RS-232, 2-wire, RS422/485) communications in fitness equipment, plcs and HMI items.

    Good Luck!
     
  3. cplcsf

    New Member

    Oct 19, 2016
    2
    0
    hello i have the pin out connections of T1900, and the service manual.

    i have on situation whit treadmill t1900, there are connected to MAX1 and i wont connect CASEp2. tellme if you now is possible this compatibility.

    best regards
    cplcsf@gmail.com








     
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