Differences

This shows you the differences between two versions of the page.

--- ht500:troubleshooting [2016/03/15 08:35]
Markus Bürgener updated links
+++ ht500:troubleshooting [2017/01/18 09:51] (current)
Simon Kühling old revision restored (2016/06/28 09:56)
@@ Line 17: / Line 17: @@
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 ^  No.   ^  Symptom  ^  Possible cause(s)  ^  To do  ^  Additional information  ^
-|  {{anchor:p1:P1}}  | Print job finishing correctly but extrusion stops midway.\\ \\ Drive gear grinding the filament.  | {{anchor:p1c1}} Increased friction in the feed system by:\\    - bent filament strand\\ - bent or constricted supply hose\\ - false insertion of filament strand in the inlet\\  - wryly coiled filament spool\\  - jammed dust wiping sponge  | ✔ Make sure that:\\ - the filament is coiled spirally and free of kinks;\\ - the  supply hoses are not constricted, free of kinks and laid out in adequate radii;\\  - the filament is inserted in the inlet at an angle of 90° | [[{|width: 10em}ht500:Software version v1.1.0 - Operation and commissioning#adjusting-the-spool-carriers|Operating manual]] |
+|  {{anchor:p1:P1}}  | Print job finishing correctly but extrusion stops midway.\\ \\ Drive gear grinding the filament.  | {{anchor:p1c1}} Increased friction in the feed system by:\\    - bent filament strand\\ - bent or constricted supply hose\\ - false insertion of filament strand in the inlet\\  - wryly coiled filament spool\\  - jammed dust wiping sponge  | ✔ Make sure that:\\ - the filament is coiled spirally and free of kinks;\\ - the  supply hoses are not constricted, free of kinks and laid out in adequate radii;\\  - the filament is inserted in the inlet at an angle of 90° | [[{|width: 10em}ht500:operation#adjusting-the-spool-carriers|Operating manual]] |
 |:::  |:::  | {{anchor:p1c2}} False idler lever preload.  | ✔ Measure and correct the idler lever tension.  | [[{|width: 10em}ht500:service-guide#Adjusting the preload|Service manual]]\\ [[{|width: 10em}ht500:knowledge-base#materials|Knowledgebase]]  |
 |:::  |:::  | {{anchor:p1c3}} Flexible (e.g. textile fibers) or solid particles (e.g. soot) clogging the nozzle tip.   | ✔ Disassemble and clean the extruding components. | [[{|width: 10em}ht500:service-guide#Removing|Disassemebly]]\\ [[{|width: 10em}ht500:service-guide#Remedying clogging|Cleaning]] |
-|:::  |:::  | {{anchor:p1c4}} Print bed leveled too close.\\ Nozzle tip clogs due to internal pressure.  | ✔ Run the [Print Bed Leveling] wizard. | [[{|width: 10em}ht500:tips-tricks#print-bed-leveling|Tips & Tricks]]\\ [[{|width: 10em}ht500:Software version v1.1.0 - Operation and commissioning#Setup|Operating manual]] |
+|:::  |:::  | {{anchor:p1c4}} Print bed leveled too close.\\ Nozzle tip clogs due to internal pressure.  | ✔ Run the [Print Bed Leveling] wizard. | [[{|width: 10em}ht500:knowledge-base#print-bed-leveling|Knowledgebase]]\\ [[{|width: 10em}ht500:operation#calibration|Operating manual]] |
-|:::  |:::  | {{anchor:p1c5}} Filament diameter exceeds tolerances.  | ✔ Measure the filament diameter and roundness at at least 5 points with a distance of 0.5 m. Measure minimal two times at the same position at an angle of 90°. The diameter must lie between\\ ''2.75 - 2.95 mm''\\ ''(2.85±0.1 mm)''\\ \\ ✔ Also check that the filament is free of kinks and bulges.\\ \\ If the diameter exceeds the stated value or there are other irregularities, there is a manufacturing fault in the filament. Contact your filament supplier for service.  | [[{|width: 10em}ht500:tips-tricks#Filament quality check.|Tips & Tricks]]\\ \\ If you ordered the filament directly from Kühling&Kühling, contact our technical support for replacement.\\ [[support@kuehlingkuehling.de|Technical support]]   |
+|:::  |:::  | {{anchor:p1c5}} Filament diameter exceeds tolerances.  | ✔ Measure the filament diameter and roundness at at least 5 points with a distance of 0.5 m. Measure minimal two times at the same position at an angle of 90°. The diameter must lie between\\ ''2.75 - 2.95 mm''\\ ''(2.85±0.1 mm)''\\ \\ ✔ Also check that the filament is free of kinks and bulges.\\ \\ If the diameter exceeds the stated value or there are other irregularities, there is a manufacturing fault in the filament. Contact your filament supplier for service.  | [[{|width: 10em}ht500:knowledge-base#Filament quality check.|Knowledgebase]]\\ \\ If you ordered the filament directly from Kühling&Kühling, contact our technical support for replacement.\\ [[support@kuehlingkuehling.de|Technical support]]   |
 |::: |::: | {{anchor:p1c6}} Print speed too high for the currently installed material. | The standard settings for the HT500 have been extensively tested with our snow-white ABS. Other materials show different melting behavior and friction. Try the following when printing new materials:\\ ✔ Decrease the print speed.\\  ✔ Increase the extrusion temperature. \\  ✔ Always use very latest Slic3r profiles from our GitHub repository as starting point for individual profile customization. | [[{|width: 10em}ht500:knowledge-base#material|Knowledgebase]]\\ [[{|width: 10em; color:green}http://manual.slic3r.org/simple-mode/simple-mode#filament-settings|Slic3r manual]]\\ [[{|width: 10em;color:green}https://github.com/kuehlingkuehling/RepRap-Industrial-Slic3r-profiles|GitHub]] |
 |::: |::: | {{anchor:p1c7}} Extrusion  temperature is too low due to deviation of value measured at the hot end heater and real temperature at the nozzle tip.  | ✔ Check the quality of the extruded filament and increase the extrusion temperature 5 - 10 °C if required. | [[{|width: 10em}ht500:knowledge-base#setting-the-extrusion-temperature|Knowledgebase]] |
@@ Line 30: / Line 30: @@
 |::: |::: | {{anchor:p1c10}} False gap fill settings (Slic3r) effect over-extrusion and layer-wise adding up of material which leads to clogging of the nozzle due to internal overpressure.  | ✔ Set "gap fill speed" to ''0''\\ -> Slic3r -> Print Settings -> Speed / Speed settings for print moves  | [[{|width: 10em; color:green}http://manual.slic3r.org/|Slic3r manual]]  |
 |  {{anchor:p2:P2}}  | Warping of the print object during or after the print.\\ \\ Extruded strands do not merge,\\ are deformed and/or\\ laid on the print bed instead of being pressed.\\ \\ Strands are separated by print head movement.  | Poor **first layer adhesion**    || [[{|width: 10em}ht500:knowledge-base#Layers and quality|Knowledgebase]] |
-|:::  |::: | Print bed leveled too far away.  | ✔ Run the [Print Bed Leveling] wizard. | [[{|width: 10em}ht500:tips-tricks#print-bed-leveling|Tips & Tricks]]\\ [[{|width: 10em}ht500:Software version v1.1.0 - Operation and commissioning#Setup|Operating manual]]  |
+|:::  |::: | Print bed leveled too far away.  | ✔ Run the [Print Bed Leveling] wizard. | [[{|width: 10em}ht500:knowledge-base#print-bed-leveling|Knowledgebase]]\\ [[{|width: 10em}ht500:operation#calibration|Operating manual]]  |
 |:::  |::: | Print bed temperature is too low. | ✔ Check temperature in the //Manual Control// menu; \\ if necessary, increase print bed temperature in the Slic3r software (Filament settings).  | [[{|width: 10em;color:green}http://manual.slic3r.org/simple-mode/simple-mode#filament-settings|Slic3r manual]] |
-|:::  |::: | Wrong Slic3r settings  | ✔ Adjust the Slic3r settings for the first layer. | [[{|width: 10em}ht500:knowledge-base#the-first-layer|Tips&Tricks]] |
+|:::  |::: | Wrong Slic3r settings  | ✔ Adjust the Slic3r settings for the first layer. | [[{|width: 10em}ht500:knowledge-base#the-first-layer|Knowledgebase]] |
 |::: |::: | Separating agents (e.g. fingerprints) on the print bed  | ✔ Clean the print bed with acetone.  | [[{|width: 10em}ht500:service-guide#Cleaning recommendation|Service manual]] |
 |:::  |:::  | **Z-positioning** inaccurate due to:  |||
-|:::  |:::  | Stick-and-slip effects when shafts are very dry (see [[#M1]] also). | ✔ lubricate with //Ballistol Universal// \\ <WRAP note>NOTICE\\ //Only valid for\\ HT500 3D printers up to\\ hardware revision 1.1.0.//</WRAP>  | [[{|width: 10em}ht500:service-guide#shaft-lubrication|Service manual]]  |
+|:::  |:::  | Stick-and-slip effects when shafts are dirty (see [[#M1]] also). | ✔ wipe clean with //Ballistol Universal// | [[{|width: 10em}ht500:service-guide#shaft-lubrication|Service manual]]  |
 |:::  |:::  | Settling processes of the spindle adjusting ring (e.g. during transport).  | ✔ Reposition the adjusting ring and refasten the set screw. |  [[{|width: 10em}ht500:service-guide#Repositioning and refastening the Z-axis clamp collar|Service manual]]  |
 |  {{anchor:p3:P3}}  | Layer separation  | (see [[#p6|P6]] also)\\ Extrusion temperature is too low.  | ✔ Check the extrusion temperatures via the //Expert Control// menu; if necessary, correct in the Slic3r software (Filament settings).\\    | [[{|width: 10em}knowledge-base#setting-the-extrusion-temperature|Knowledgebase]]\\ [[{|width: 10em;color:green}http://manual.slic3r.org/simple-mode/simple-mode#filament-settings|Slic3r manual]] |
-|  {{anchor:p4:P4}}  | Printed circular structures (holes, cylinders) are deformed and out of round.  | Backlash in the X- and/or Y-axis.  | ✔ Calibrate backlash. | [[{|width: 10em}ht500:service-guide#backlash-calibration|Service manual]]  |
+|  {{anchor:p4:P4}}  | Printed circular structures (holes, cylinders) are deformed and out of round.  | Backlash in the X- and/or Y-axis.  | ✔ Calibrate backlash. | [[{|width: 10em}ht500:operation#omc13t2|Operating Manual]]  |
 |::: |::: |:::  | ✔ Check timing belt tension.  | [[{|width: 10em}ht500:service-guide#timing-belt-tension|Service manual]]  |
-|::: |::: |:::  | ✔ Check for loosened X-axis and/or Y-axis drive pulley.\\ Refasten the set screws with a #1.5 Allen key. <WRAP note> NOTICE\\ //Only valid for\\ HT500 3D printers up to\\ hardware revision 1.1.0.// </WRAP>  |  [[support@kuehlingkuehling.de|Technical support]]  |
+|  {{anchor:p5:P5}}  | Print starts off-center  | Wrong print bed center or origin settings in Slic3r.  | ✔ Check for correct settings.  | [[{|width: 10em}ht500:service-guide#print-bed-size-settings-for-different-hardware-and-slic3r-versions|Service manual]]  |
-|  {{anchor:p5:P5}}  | Print starts off-center  | Wrong print bed center or origin settings in Slic3r.  | ✔ Check for correct settings according to your Slic3r-hardware combination.  | [[{|width: 10em}ht500:service-guide#print-bed-size-settings-for-different-hardware-and-slic3r-versions|Service manual]]  |
+|  {{anchor:p6:P6}}  | Gaps between extruded strands.\\ \\ Loose, open-stranded top/bottom layers.\\ \\ Loose, uneven honeycomb infill.  | Under-extrusion; extrusion multiplier too low.   | ✔ Run the [Extrusion Calibration] wizard;\\ save the calculated multiplier in the Slic3r filament profile. | [[{|width: 10em}ht500:operation#determining-the-extrusion-multiplier|Operating manual]]\\ [[{|width: 10em}knowledge-base#calibrating-the-extrusion|Knowledgebase]]\\ [[{|width: 10em; color:green}http://manual.slic3r.org/|Slic3r manual]] |
-|  {{anchor:p6:P6}}  | Gaps between extruded strands.\\ \\ Loose, open-stranded top/bottom layers.\\ \\ Loose, uneven honeycomb infill.  | Under-extrusion; extrusion multiplier too low.   | ✔ Run the [Extrusion Calibration] wizard;\\ save the calculated multiplier in the Slic3r filament profile. | [[{|width: 10em}ht500:Software version v1.1.0 - Operation and commissioning#determining-the-extrusion-multiplier|Operating manual]]\\ [[{|width: 10em}tips-tricks#calibrating-the-extrusion|Tips&Tricks]]\\ [[{|width: 10em; color:green}http://manual.slic3r.org/|Slic3r manual]] |
 |  {{anchor:p7:P7}}  | Filament bends and twists between drive gear and hot-end inlet, the filament is not conveyed to the nozzle.    | Flexible materials (e.g. TPEs): the gap between drive gear and hot-end inlet is too wide for printing without modification.   | ✔ Download, print and install the required adapter  |  [[{|width: 10em;color:green}https://github.com/kuehlingkuehling/Tools-Accessories|GitHub]]\\ [[{|width: 10em}ht500:knowledge-base#thermoplastic-elastomer-tpe|Knowledgebase]]   |
-|::: |::: | Build chamber temperature is too high for temperature-sensitive materials.  | ✔ Check the Vicat softening temperature of the material and reduce the build chamber temperature to a value 5 - 10 °C below.  | [[{|width: 10em}ht500:tips-tricks#adjusting-the-build-chamber-temperature|Tips&Tricks]]  |
+|::: |::: | Build chamber temperature is too high for temperature-sensitive materials.  | ✔ Check the Vicat softening temperature of the material and reduce the build chamber temperature to a value 5 - 10 °C below.  | [[{|width: 10em}ht500:knowledge-base#adjusting-the-build-chamber-temperature|Tips&Tricks]]  |
-|  {{anchor:p8:P8}}  | Print job cannot be finished although every mechanical or electronic issue has been checked.\\ Strange artifacts appear in printed object.\\ Print fails for no obvious reason and with varying effects (clogging of the nozzle, grinding of the drive gear, insufficient layer binding etc.)  | STL-file corrupted  | ✔ Check the STL-file for holes, intersections, misaligned edges and the like. Repair or redesign if necessary.  | [[{|width: 10em}ht500:tips-tricks#easy-evaluation-of-stl-data|Tips&Tricks]]\\ [[{|width: 10em;color:green}http://manual.slic3r.org/advanced/repairing-models|Slic3r manual]]\\ [[{|width: 10em;color:green}http://www.netfabb.com/manuals_download.php|netfabb manual]]  |
+|  {{anchor:p8:P8}}  | Print job cannot be finished although every mechanical or electronic issue has been checked.\\ Strange artifacts appear in printed object.\\ Print fails for no obvious reason and with varying effects (clogging of the nozzle, grinding of the drive gear, insufficient layer binding etc.)  | STL-file corrupted  | ✔ Check the STL-file for holes, intersections, misaligned edges and the like. Repair or redesign if necessary.  | [[{|width: 10em}ht500:knowledge-base#easy-evaluation-of-stl-files|Knowledgebase]]\\ [[{|width: 10em;color:green}http://manual.slic3r.org/advanced/repairing-models|Slic3r manual]]\\ [[{|width: 10em;color:green}http://www.netfabb.com/manuals_download.php|netfabb manual]]  |
 |  {{anchor:p9:P9}}  | Extrusion temperature drops mid-print and extruder drive stops. All axes keep moving.  | Broken thermistor at the heating block of the extruder.\\ see [[#em1|EM1]] also  | ✔ Check cable connections of the thermistors for damage or wear.\\ If the fragile cables of the thermistor are broken, the heating unit must be replaced.  |  [[{|width: 10em}ht500:service-guide#dissemblingre-installing-the-hot-end-nozzle-tips-andor-barrels|Service manual]]\\ \\ [[sales@kuehlingkuehling.de|order spare parts]]  |
 |  {{anchor:p10:P10}}  | Visible drop formation (blobs) on external perimeters.  | High-resolution models result in G-code-resolution finer than the printer can render; increased memory usage leads to buffer data loss and pause times.  | ✔ Increase the //minimum detail resolution// of the Slic3r software.  | [[{|width: 10em}ht500:service-guide#Increasing the minimum detail resolution of the Slic3r|Service manual]]\\ [[{|width: 10em;color:green}http://manual.slic3r.org/simple-mode/simple-mode#filament-settings|Slic3r manual]] |
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 ^  No.   ^  Symptom  ^  Possible cause(s)  ^  To do  ^  Additional information  ^
-|  {{anchor:m1:M1}}  | Juddering of the print table during homing. | Very dry shafts lead to increased stick-and-slip effects.  | ✔ Lubricate the Z-shafts with //Ballistol Universal// \\ <WRAP note> NOTICE\\ //Only valid for\\ HT500 3D printers up to\\ hardware revision 1.1.0.// </WRAP>  | [[{|width:10em}ht500:service-guide#shaft-lubrication|Service manual]] |
+|  {{anchor:m1:M1}}  | Juddering of the print table during homing. | Very dry shafts lead to increased stick-and-slip effects.  | ✔ Lubricate the Z-shafts with //Ballistol Universal//   | [[{|width:10em}ht500:service-guide#shaft-lubrication|Service manual]] |
-|  {{anchor:m2:M2}}  | Increasingly rough vertical surfaces | Very dry shafts may lead to increased vibrations of the extruder.  | ✔ Lubricate the X- and Y-shafts with //Ballistol Universal// \\ <WRAP note> NOTICE\\ //Only valid for\\ HT500 3D printers up to\\ hardware revision 1.1.0.// </WRAP>  | [[{|width:10em}ht500:service-guide#shaft-lubrication|Service manual]] |
+|  {{anchor:m2:M2}}  | Increasingly rough vertical surfaces | Very dry shafts may lead to increased vibrations of the extruder.  | ✔ Lubricate the X- and Y-shafts with //Ballistol Universal// </WRAP>  | [[{|width:10em}ht500:service-guide#shaft-lubrication|Service manual]] |
-|  {{anchor:m3:M3}}  | Homing the X-axis leads to extruder head collision and blackout of the controls.  | X-axis limit stop bent by crash due to misinterpreted home-position.  | ✔ Disconnect the printer from the power supply and carefully bend back limit stop with tweezers.\\ <WRAP note>**NOTICE**\\  Always power down the 3D printer before touching electronic components with conductive tools to avoid damages by short-circuiting.</WRAP>  |   |
+|  {{anchor:m3:M3}}  | Homing the X-axis leads to extruder head collision and blackout of the controls.  | X-axis limit stop bent by crash due to misinterpreted home-position.  | ✔ Disconnect the printer from the power supply and carefully bend back limit stop with tweezers.\\ <WRAP note>**NOTICE**\\  Always power down the 3D Printer before touching electronic components with conductive tools to avoid damages by short-circuiting.</WRAP>  |   |
-|::: |::: | G-code home positions of X-axis incorrect.  | ✔ Check Slic3r for correct axes settings\\ (depending on the release versions of the 3D printer version and the slic3r software). | [[{|width:10em}ht500:service-guide#print-bed-size-settings-for-different-hardware-and-slic3r-versions|Service manual]]  |
+|  {{anchor:m4:M4}}  | Although the left extruder has been selected as reference during leveling, the print head moves the right extruder into the center position.   | Extruder offset in the web interface has been set incorrect or for the false extruder (e.g. after an update).  | ✔ Check in the //Setup// tab of the web-interface for the following:\\ Extr.1 X-offset [steps] set to ''0''\\ Extr.1 Y-offset [steps] set to ''0''\\ Extr.2 X-offset [steps] set to ''2078''\\ Extr.2 Y-offset [steps] set to ''-21''\\ \\ Regard that these are factory presets. Run the [Extruder Offset Calibration] wizard to adjust these for your specific 3D Printer. | [[{|width:10em}ht500:software-firmware-upgrades#upgrade-instructions-for-hardware-revision-110|Upgrade information]]   |
-|  {{anchor:m4:M4}}  | Although the left extruder has been selected as reference during leveling, the print head moves the right extruder into the center position.   | Extruder offset in the web interface has been set incorrect or for the false extruder (e.g. after an update).  | ✔ Check in the //Setup// tab of the web-interface for the following:\\ Extr.1 X-offset [steps] set to ''0''\\ Extr.1 Y-offset [steps] set to ''0''\\ Extr.2 X-offset [steps] set to ''2078''\\ Extr.2 Y-offset [steps] set to ''-21''\\ \\ Regard that these are factory presets. Run the [Extruder Offset Calibration] wizard to adjust these for your specific 3D printer. | [[{|width:10em}ht500:software-firmware-upgrades#upgrade-instructions-for-hardware-revision-110|Upgrade information]]   |
 |  {{anchor:m5:M5}}  | Filament uncoils from the spool\\ (especially when using new 2.3 kg spools).  | The spool rim is too narrow for the amount of material on new spools. The material's elasticity is due to the manufacturing process and will cause the filament to uncoil when not under tension.  | ✔ Print three to four of the //filament spool wings// provided at the GitHub repository and fasten them to the outside of the spool's rim. If required, apply a small amount of hot glue.  | [[{|width:10em;color:green}https://github.com/kuehlingkuehling/Tools-Accessories/tree/master/Filament%20Spool%20Wings|GitHub]]\\ {{ :ht500:tools_spoolwings.jpg?100 |}} |
 |  {{anchor:m6:M6}}  | Noticeable amount of gas bubbles in the cooling system.  | Lack of coolant due to leakage.  | ✔ Refill coolant.  | [[{|width:10em}ht500:service-guide#cooling-water-pump|Service manual]] |
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 ^  No.   ^  Symptom  ^  Possible cause(s)  ^  To do  ^  Additional information  ^
-|  {{anchor:e1:E1}}  | Status indicator on the touchscreen diplays "Offline" (after booting).  | USB-to-Serial chip (RUMBA board) is in DFU mode (firmware programming mode); firmware is lost or corrupted  | ✔ More information and remedy see ⇒ | [[{|width:10em}ht500:service-guide#Reflash USB-to-Serial chip firmware on RUMBA board|Service manual]] |
+|  {{anchor:e1:E1}}  | The web interface is not contactable via the network.  | Network cable disconnected.  | ✔ Check that the network cable at the rear cover of the electronic chamber is in place.  | [[{|width:10em}ht500:manual#mp1|Manual]] |
-|  {{anchor:e2:E2}}  | Upon boot, the touchscreen stays black for more than 5 minutes and will not display anything.\\ Inside the electronics chamber, the block of three LEDs on the BeagleBone Black is solid blue (no flashing).  | The operating system for the BeagleBone Black embedded computer could not be loaded from its SD card. | ✔ Switch off the power supply main switch, switch on again.\\ If the system is successfully booting now, the problem was only temporary and is resolved. | |
+|::: |::: | URL spelling mistakes  | ✔ Check for correct spelling of the URL.  |   [[{|width:10em}ht500:operation#screenurl|Operating manual]]   |
-|::: |::: |::: | In case the behavior recurs frequently, the Micro-SD card may be malfunctioning.\\ ✔ Try building a new Micro-SD card as detailed in the Software & Firmware upgrade guide | [[{|width:10em}ht500:software-firmware-upgrades|Software & Firmware Upgrades]] |
-|  {{anchor:e3:E3}}  | Timestamps of log-file entries are incorrect and/or inconsistent.\\ \\ Timestamps of log entries are reset at re-start.  | Printer is connected to a local network that does not provide internet access (no gateway available).\\ \\ LAN network is firewall protected.\\ \\ The 3D printer cannot keep accurate time by itself, it needs to occasionally synchronize with a public NTP time signal server (e.g. during boot) | ✔ Check your network's firewall and internet settings -> free internet access must be provided for NTP synchronisation through port 123/UDP|
-|::: |::: |::: | ✔ re-configure the printer to fetch a time signal from an in-house NTP-server if available | [[{|width:10em}ht500:tips-tricks#use-a-custom-ntp-server-for-time-signals|Tips&Tricks]]  |
-|  {{anchor:e4:E4}}  | The web-interface is not contactable via the network.  | Network cable disconnected.  | ✔ Check that the network cable at the rear cover of the electronic chamber is in place.  | [[{|width:10em}ht500:manual#mp1|Manual]] |
-|::: |::: | URL spelling mistakes  | ✔ Check for correct spelling of the URL.  |   [[{|width:10em}ht500:Software version v1.1.0 - Operation and commissioning#screenurl|Operating manual]]   |
 |::: |::: | Network does not provide DHCP.  | ✔ Ask your system administrator for help.  |  |
 |::: |::: | Printer and PC are not connected to the same network.  |:::  |:::  |
-|  {{anchor:e5:E5}}  | The web-interface displays "Offline" while the 3D printer's touchscreen status indicator reads "Idle". The communication fails.  | 3D printer web-socket connection unavailable.\\ Possible reasons (excerpt):\\ - proxy-server or firewall settings\\ - outdated internet browser versions\\ - locked network ports etc.  | ✔ Try using another PC and/or another internet browser.\\ ✔ Confer with your system administrator regarding:\\ - unblocked protocols/ports\\ - use of static or dynamic IP-adress\\ - firewall and/or network restrictions\\ - network proxy-server configuration  |   |
+|  {{anchor:e2:E2}}  | The web interface displays "Offline" while the 3D Printer's touchscreen status indicator reads "Idle". The communication fails.  | 3D Printer web-socket connection unavailable.\\ Possible reasons (excerpt):\\ - proxy-server or firewall settings\\ - outdated internet browser versions\\ - locked network ports etc.  | ✔ Try using another PC and/or another internet browser.\\ ✔ Confer with your system administrator regarding:\\ - unblocked protocols/ports\\ - use of static or dynamic IP-adress\\ - firewall and/or network restrictions\\ - network proxy-server configuration  |   |
-|  {{anchor:e6:E6}}  | After starting the 3D printer, the touchscreen stays completely black, the background lighting is **off**.\\ The light ring of the wake button is illuminated.\\ Communication via the web interface functions normally.  | Defective HDMI port of the BeagleBone black.  | ✔ The BeagleBone black must be replaced.  | Contact the [[sales@kuehlingkuehling.de|sales team]] for a quote on the spare part or an in-house repair.  |
-|  {{anchor:e7:E7}}  | The HMI does not react to user input.  | Undervoltage of the USB port of the BeagleBone Black due to defective cable harness.  | ✔ Exchange of the cable harness.  | Contact the  [[sales@kuehlingkuehling.de|sales team]] for ordering the spare part.  |
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