False Operation; Wave-Like Lines Appear On The Surface Of Models; One Of The Axis Motor Is Not Working Or Rotating; Axis Motor Rotates Only In One Direction - FLASHFORGE 3D PRINTER Guider IIS Series User Manual

tube,throat tube,extruder motor and nozzle.
4.False operation—directly insert the filament into extruder without cutting off
the melted tip part when reload in filament:Clear out the jammed filament
fragment by heating extruder and pushing the pin tool,replace the new
filament,making sure filament tip is smooth,not deformed or twisted.
5.Teflon tube is totally out of shape or the nozzle is totally jammed, these parts
can not be used any more: Replace with new teflon tube or new nozzle.
Referring operating video:
https://www.youtube.com/watch?v=sPYaoRWAp2o&t=28s
FlashForge-Guider IIS- Replacement of Nozzle and teflon Tube

9.9 Wave-like lines appear on the surface of models.

1. Apply some lubricate grease on the Z-Axis.
2. Z-Axis guide rods and Z-Axis bearings do not coordinate, or Z-Axis(motor
axis) and the copper sleeve do not coordinate: Check these parts,
disassemble and re-assemble these parts to check again, Replace
corresponding problem parts with new parts.
3.Z-Axis driver board has problem: Replace the Z-Axis driver board with the
normal X-Axis driver board or normal Y-Axis driver board (mind driver boards'
directions) , if the problem is solved, replace the new Z-Axis driver board,if the
problem is not solved, replace the new Z-Axis motor.
9.10（1）One of the axis motor is not working or rotating.
1. Check to see whether something is blocked or other problems in the
direction of this moving axis: Clear out and fix these blocking problems.
2. Replace the malfunction motor's driver board with normal axis motor's
driver board, if the problem is solved, replace the new axis driver board, if the
problem is not solved, replace the new axis motor.
（2）Axis motor rotates only in one direction:
1. Refer to the steps in 9.10(1)，but do not replace new axis motor.
Guider IIS series User Guide | www.flashforge.com