From 849911980ca2603d6beb8197b2149a6ac6b1177c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Oliver=20K=C3=B6ster?= <36196269+knutwurst@users.noreply.github.com> Date: Tue, 8 Feb 2022 16:06:06 +0100 Subject: [PATCH] Updated TMC2xxx troubleshooting and mainboard repair instructions (markdown) --- ...shooting-and-mainboard-repair-instructions.md | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/TMC2xxx-troubleshooting-and-mainboard-repair-instructions.md b/TMC2xxx-troubleshooting-and-mainboard-repair-instructions.md index d094465..28a53f0 100644 --- a/TMC2xxx-troubleshooting-and-mainboard-repair-instructions.md +++ b/TMC2xxx-troubleshooting-and-mainboard-repair-instructions.md @@ -1,4 +1,4 @@ -# Troubleshoot +# Troubleshooting > ## _**I accidentally installed my drivers the wrong way round and when I switched on the mainboard released magic smoke**_ @@ -8,19 +8,19 @@ When that happens, you unfortunately have to buy new drivers because at least on The following picture shows an intact board with the diode still intact: -[[https://raw.githubusercontent.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/master/images/diode_closeup.jpg | width = 800px]] +[[/images/diode_closeup.jpg | width = 800px]] When this burns down, however, a small flame is created that comes out of the housing and melts a hole in it: -[[https://raw.githubusercontent.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/master/images/burnt_diode_closeup.jpg | width = 800px]] +[[/images/burnt_diode_closeup.jpg | width = 800px]] So we solder out the old defective diode, take a new one out of the bag, cut off the legs so that they are not too long and solder them to the board. -[[https://raw.githubusercontent.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/master/images/1N4733.jpg | width = 800px]] +[[/images/1N4733.jpg | width = 800px]] Please pay attention to the polarity. The black bar must point to the left, as shown in the photo. -[[https://raw.githubusercontent.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/master/images/new_diode_closeup.jpg | width = 800px]] +[[/images/new_diode_closeup.jpg | width = 800px]] That's it The board should now run again. If not, a fuse could be defective (above the diode), but that is rare when installing the driver. @@ -36,17 +36,17 @@ The only way to test this is to build it in. However, with three simple tests yo A sure sign of a defective driver is a burn hole or discoloration of the chip, similar to a burned Zener diode. Everything that does not look 100% clean can be sorted out. -[[https://raw.githubusercontent.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/master/images/burnt_stepper.jpg | width = 800px]] +[[/images/burnt_stepper.jpg | width = 800px]] **2. Measure the resistance of the motor power supply** To make sure that we don't have a short circuit in the driver that blows our fuses or, in the worst case, the whole board, we simply check the resistance between **GND** and **VMOT** (the designations can change, but the pins are always the same). Here the resistance should be very high (in the megohm range) and not in the direction of 0 (short circuit). It also always makes sense to compare ALL drivers. If the values ​​are all identical, it looks good ... if one deviates, it will be defective. -[[https://raw.githubusercontent.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/master/images/stepper_vmot_gnd.jpg | width = 800px]] +[[/images/stepper_vmot_gnd.jpg | width = 800px]] **3. Measure the resistance of the driver power supply** The same game as with VMOT, only this time on the VDD pin. The value should be measurable in the kilo-ohm range. If 0 Ohm or "infinite" is displayed here, the driver is for the barrel. -[[https://raw.githubusercontent.com/knutwurst/Marlin-2-0-x-Anycubic-i3-MEGA-S/master/images/stepper_vdd_gnd.jpg | width = 800px]] \ No newline at end of file +[[/images/stepper_vdd_gnd.jpg | width = 800px]] \ No newline at end of file