RUN XT: Service & Maintenance Manual - rev. 2.0
Page 6.33
(3) If the machine fails to move downward, place the tester probes between pins 12 (ground) and
11 (signal) of connector CN1 on the CPU board: the measured voltage should be
approximately 5 Vdc. If the machine fails to move upward, place the tester probes between
pins 12 (ground) and 10 (signal) of connector CN1 on the CPU board: the measured voltage
should be approximately 5 Vdc.
(4) DL1 corresponds to the upper limit switch, while DL3 corresponds to the lower limit switch.
(5) Disconnect the 2 connecting cables of the relevant limit switch and place the tester probes
across them: the measured voltage should be approximately 12 Vdc.
(6) To check the upper limit switch, place the tester probes between pins 6 (ground) and 3 (signal)
of connector CN3 on the up-down board.: the measured voltage should be 12 Vdc. To check
the lower limit switch, place the tester probes between pins 6 (ground) and 4 (signal) of
connector CN3 on the up-down board: the measured voltage should be 12 Vdc.
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