| Error message | Description | Symptoms | Troubleshooting |
|---|---|---|---|
| Gantry error - ‘maximum retries exceeded’ | Gantry exceeded maximum number of cycles of checking if stage sensor stops detecting a bed | Inability to fetch a bed or print | General troubleshooting: Re-home gantry Scenario 1: Array senses bed correctly, but end effector is too low and triggers sensor when it starts scan. Remove top most bed of the zone below where the error occurs (e.g. scanning zone C when error occurs, remove bed #10 from zone D) Scenario 2: Array doesn’t sense bed, but system thinks a bed is there. Check the number of available beds saved through screen input |
| Gantry retrieved new bed, timeout with no error message | An issue prevented printer operations to continue | Array retrieves new bed but system stops responding to proceed with next action | Element: (1) Powercycle printer (2) Check if printer expected to be used has issue or changed state (e.g. went offline, inactive) Array related: (1) Check that storage cart is fully installed (2) If gantry attempts to home but doesn’t complete the action, check if the door magnet was removed |
| Gantry error: ‘stepout’ - inspect the gantry and remove loose objects | Stepout error is when no sensor trigger event occurs and has reached max distance on the axis | End effector is in position where it can’t achieve set action, or is far away from its expected destination | General Troubleshooting: Provide video of movement across the affected axes if possible Troubleshooting for x and y axes: (1) Listen for noises that could indicate motor stalling or belt slipping (2) Potentially failing sensor due to broken cable, connector not installed properly or sensor not in correct port on PCB Troubleshooting for failed to retrieve bed: (1) Re-home gantry and observe behavior, try to replicate error mode (2) Check connections on board for Z_home and Z_locate (3) Take photos of XYZ motor connections for the gantry (4) Take photos of the underside of the end effector |
| Gantry error ‘failed to store print’ - inspect the gantry and remove loose objects | Sensor on end effector should not detect presence of a bed or other object after completing storage cart action. The presence of an object will cause the action to fail | Gantry may appear misaligned in relation to the storage cart, storage cart may be undocked, print bed still present on end effector or stuck between the stage and end effector | (1) Check that bed is flat. Lay bed across table, check if corners or areas are sticking up >3mm (2) Take pictures of gantry and end effector in error state, before removing loose print bed (3) Ensure that contents of storage cart are reflected on back screen. If there is a mismatch between storage cart and back screen, re-initialize back screen (4) Re-home gantry |
| Fail to fetch bed (from empty bed feeder) | Front and back bed sensors on end effector are unable to detect bed and proceed with next action to bring bed to printer | No bed on the end effector, or end effector is colliding into bed feeder | Take photos of the pins on the end effector's stage responsible for detecting the bed, send these photos to support@mosaicmfg.com |
| Fail to retrieve print bed (from ELA) | Sensors on end effector are unable to detect bed and proceed with next action to bring bed to storage cart End effector may be resting on the bottom side of the Element door | Bed on stage appears slightly skewed, lifted towards the back of the end effector in a manner where the back bed sensor does not detect the bed | (1) Adding a 3mm shim to end effector back bed sensor to increase height and improve retrieval success if one does not already exist (2) Belt tension should be measured and compared to the specified range (3) Check if set screws on the Z motor shaft sprocket are loose |
| Fail to place bed in printer | Bed front and/or back sensors detect an object | Print bed is still on the end effector, or print is not on the end effector but also not fully on Element | (1) Belt tension should be measured and compared to the specified range (2) Check if set screws on stage motor drive shaft are loose Learn more about preventative maintenance. |
| Fail to place bed in storage | Bed front and/or back sensors detect an object | Print bed is still on the end effector | (1) Inspect print bed for bent corners (2) Inspect the alignment of the end effector with respect to the storage walls (horizontal position) (3) If print is too heavy it could cause bed to droop between storage walls causing the bed to interact with the stage pem during retraction |
Wiki ID: 389
Author: Adalyn Ordono
Release: v1.0.0 [Major]
Revision ID: 2188
Revision Date: 11-14-23
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