# Troubleshooting

<table border="1" cellpadding="0" cellspacing="0" class="MsoNormalTable" id="bkmrk-problem-resolution-r" style="width: 827px; border-collapse: collapse; border: none; height: 425.302px;" width="680"><tbody><tr style="height: 31.3125px;"><td style="width: 269.59px; border: 1pt solid rgb(127, 127, 127); background: rgb(109, 111, 113); padding: 2.85pt 5.4pt; height: 31.3125px;" width="198"><span style="color: rgb(255, 255, 255);">Problem</span>

</td><td style="width: 553.421px; border-top: 1pt solid rgb(127, 127, 127); border-right: 1pt solid rgb(127, 127, 127); border-bottom: 1pt solid rgb(127, 127, 127); border-image: initial; border-left: none; background: rgb(109, 111, 113); padding: 2.85pt 5.4pt; height: 31.3125px;" width="482"><span style="color: rgb(255, 255, 255);">Resolution</span>

</td></tr><tr style="height: 53.6979px;"><td style="width: 269.59px; border-right: 1pt solid rgb(127, 127, 127); border-bottom: 1pt solid rgb(127, 127, 127); border-left: 1pt solid rgb(127, 127, 127); border-image: initial; border-top: none; background: rgb(244, 244, 244); padding: 2.85pt 5.4pt; height: 53.6979px;" valign="top" width="198">Red and green status indicators off</td><td style="width: 553.421px; border-top: none; border-left: none; border-bottom: 1pt solid rgb(127, 127, 127); border-right: 1pt solid rgb(127, 127, 127); background: rgb(244, 244, 244); padding: 2.85pt 5.4pt; height: 53.6979px;" valign="top" width="482">Check that the power supply to SMD4 is correctly connected and meets the requirements given in section [Technical Information](https://bookstack.vps-da8d40f3.arunmicro.com/books/smd4-user-manual/page/technical-information)</td></tr><tr style="height: 31.3125px;"><td style="width: 269.59px; border-right: 1pt solid rgb(127, 127, 127); border-bottom: 1pt solid rgb(127, 127, 127); border-left: 1pt solid rgb(127, 127, 127); border-image: initial; border-top: none; padding: 2.85pt 5.4pt; height: 31.3125px;" valign="top" width="198">Red status indicator flashing or lit solidly</td><td style="width: 553.421px; border-top: none; border-left: none; border-bottom: 1pt solid rgb(127, 127, 127); border-right: 1pt solid rgb(127, 127, 127); padding: 2.85pt 5.4pt; height: 31.3125px;" valign="top" width="482">Each indication corresponds to a fault, review section [Faults](https://bookstack.vps-da8d40f3.arunmicro.com/books/smd4-user-manual/page/operation#bkmrk-faults)</td></tr><tr style="height: 188.083px;"><td style="width: 269.59px; border-right: 1pt solid rgb(127, 127, 127); border-bottom: 1pt solid rgb(127, 127, 127); border-left: 1pt solid rgb(127, 127, 127); border-image: initial; border-top: none; background: rgb(244, 244, 244); padding: 2.85pt 5.4pt; height: 188.083px;" valign="top" width="198">Motor does not move when commanded</td><td style="width: 553.421px; border-top: none; border-left: none; border-bottom: 1pt solid rgb(127, 127, 127); border-right: 1pt solid rgb(127, 127, 127); background: rgb(244, 244, 244); padding: 2.85pt 5.4pt; height: 188.083px;" valign="top" width="482">Is a fault present? Check the red status indicator on the front panel, and use the SMD3 software or remote interface to determine the nature of the fault. After the fault has been fixed, run the CLR command, or use the reset fault input to restore normal operation

  
Check the motor wiring to the SMD3; disconnect the motor, and use a multimeter to measure the resistance of each phase, see section [Lead Identification](https://bookstack.vps-da8d40f3.arunmicro.com/books/smd4-user-manual/page/installation#bkmrk-lead-identification-1), which should be approximately 3 – 15 ohms

</td></tr><tr style="height: 120.896px;"><td style="width: 269.59px; border-right: 1pt solid rgb(127, 127, 127); border-bottom: 1pt solid rgb(127, 127, 127); border-left: 1pt solid rgb(127, 127, 127); border-image: initial; border-top: none; padding: 2.85pt 5.4pt; height: 120.896px;" valign="top" width="198"><span style="font-family: DejaVu Sans, -apple-system, BlinkMacSystemFont, Segoe UI, Oxygen, Ubuntu, Roboto, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;">Joystick does not work</span></td><td style="width: 553.421px; border-top: none; border-left: none; border-bottom: 1pt solid rgb(127, 127, 127); border-right: 1pt solid rgb(127, 127, 127); padding: 2.85pt 5.4pt; height: 120.896px;" valign="top" width="482">Is joystick mode selected?

If you want to switch to joystick mode automatically on connection of the joystick, see setting [AUTOJS](https://bookstack.vps-da8d40f3.arunmicro.com/books/smd4-user-manual/page/communications-protocol#bkmrk-%C2%A0-15) and section [Joystick](https://bookstack.vps-da8d40f3.arunmicro.com/link/28#bkmrk-joystick). The joystick must be wired correctly for the auto-detect function to work as described in section [Joystick](https://bookstack.vps-da8d40f3.arunmicro.com/link/28#bkmrk-joystick).

</td></tr></tbody></table>