Alunar M508 Prusa i3 User manual

ALUNAR 3D Printer M508 Quick Start Guide
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Catalogue
Foreword................................................................................................................................................................................3
1. Machine parameters ........................................................................................................................................................3
2. Flow Diagram for Quick Use Manual.............................................................................................................................3
3. Important Notice and Attentions.....................................................................................................................................3
4. Preparatory Work..............................................................................................................................................................4
5. Preinstallation Checklist ..................................................................................................................................................4
5.1 Step Way of Opening Box.....................................................................................................................................4
5.2 Take an account of kits..........................................................................................................................................4
6.Assembly and Calibration for M508...............................................................................................................................4
6.1 The main machine structure.................................................................................................................................5
6.2 Step1 Frame assembly..........................................................................................................................................5
6.3 Step2 Y axis assembly and hotbed assembly....................................................................................................6
6.4 Step3 Z axis assembly and X axis assembly...................................................................................................10
6.5 Step4 Extruder assembly....................................................................................................................................13
6.6 Step5 LCD assembly...........................................................................................................................................15
6.7 Step6 power and mainboard assembly.............................................................................................................16
6.8 Step7 Filament rack assembly...........................................................................................................................17
7. Testing and Commissioning..........................................................................................................................................18
7.1 Power on test........................................................................................................................................................18
7.1.1 Turn on the power switch, LCD display, as shown in Figure..............................................................18
7.1.2 Fan check...................................................................................................................................................18
7.1.3 Nozzle and hot bed heating inspection..................................................................................................18
7.1.4 Back to the origin inspection....................................................................................................................18
7.2 Hotbed leveling test:............................................................................................................................................19
7.2.1 Rough Debugging to level hotbed..........................................................................................................19
7.2.2 Accurate Debugging .................................................................................................................................20
7.2.3 Fine Debugging when printing................................................................................................................20
7.3 Change the Filament............................................................................................................................................20
7.3.1 Change the Filament when not printing.................................................................................................20
7.3.2 Change the Filament When Printing......................................................................................................21
7.4 Feature Demonstration........................................................................................................................................21
7.4.1 Instruction of Operation part for Off-line Printing..................................................................................21
7.4.2 The first Memo Interface..........................................................................................................................22
7.4.3 The secondary memo interface ..............................................................................................................22
7.4.4 Prepare for printing (prepare)..................................................................................................................23
7.4.5 Move the axis and input& output the filament (Move Axis).................................................................23
7.4.6 The ParameterAdjustment when not printing (Control)......................................................................24
7.4.7 Real-time parameter adjustment (Tune)................................................................................................25
7.4.8 Parameter adjustment when printing (Control).....................................................................................26
7.4.9 Print from SD .............................................................................................................................................26
8. Printing Test.....................................................................................................................................................................26
9. Senior Instruction............................................................................................................................................................27
9.1 Off-line Printing.....................................................................................................................................................27
9.1.1 How to use Cura 15.04.............................................................................................................................27
9.1.2 Online Printing.....................................................................................................................................34
10. Frequently Asked Questions and Solutions..............................................................................................................37
10.1 “Err: MINTEMP”Alarm processing method....................................................................................................37
10.2 Trouble: LCD screen is not bright....................................................................................................................38
10.3 Trouble: Rotation button cannot be up and down the selection menu.......................................................38
10.4 No extruded filament when printing.................................................................................................................39
10.5 Problems on the distance between nozzle and hotbed................................................................................39
10.6 Model Dislocation when printing......................................................................................................................39
11. Wire Diagram of Main board.......................................................................................................................................41

Foreword
Thanks in advance for choosing our M508 3D Printer! With the Quick Start Guide (hereinafter as “Guide”),
you could enjoy accomplishing the assembly, Test and Printing step by step. Meanwhile, you will also learn the
structure principle and its special FDM printing technology deeply, and then you will get great progress on not
only the theoretical knowledge but also the manipulative ability.
To give play to the bigger effect of the printer and ensure the worry-free buying, smooth and enjoyable using,
we spare no effect to consider the problem and difficulty you will meet with from when you order the printer and
make detail videos and pictures to show the exact settle way. We write this “Guide” elaborately in great detail
and we will always accompany with your using 3D printer. The kits would come to you with high-class parts and
need you to put them together. So please read the “Guide” carefully before you assembly and use the
printer .Please use the printer in strict accordance with the “Guide” to avoid any defective or invalid use caused
by improper operation. So please keep the “Guide” for your easy reference.
Special Tips:
With our objective of constant update for our printer, we would not make future notice to you if some
specifications and models updated.And we apologize for the inconvenience would lead to you.
We will do our best to help and solve the problem with our products. Your positive review and feedback are
so appreciated!
Wish you a nice day!
1. Machine parameters
Printing technology FDM Nozzle diameter 0.3(default),0.4,0.5mm
Print size 200*200*180mm Printing precision 0.1-0.3mm
Filament PLA /ABS /HIPS/WOOD Printing speed 40-100mm/s (proposal)
Filament diameter ￠1.75mm Working condition 10-40℃
Number of extruder 1 Humidity 20-50％
2. Flow Diagram for Quick Use Manual
3. Important Notice and Attentions
3.1 Keep the assembling operation platform level.
3.2 Please ensure that you move to the right tap position for input voltage (110V or 220V) of the power
supply (as shown in the picture).
Input Voltage 100~160V 200~260V
Position choice 110V 220V
Matters and Attentions Preparatory Work Preinstallation Checklist Assembly and
Calibration Printing Test Senior Instruction Frequently Asked Questions and Settle Way
Warning: Must be in the
condition of power
equipment of the strike.

3.3 You need to make a proper degree of tightness of the pull belt for X axis& Y axis.
3.4 Ensure manual operation slide smoothly when you install the X, Y, Z axis.
3.5 When equipped the hotbed, you should keep the 4 angle level for sure.
3.6 Ensure the correct wiring for controller board and plug tightly into the exact socket.
3.7 Don’t plug and unplug the wiring for controller board when power on, especially don’t plug and
unplug the connect wiring for power supply.
3.8 Don’t touch the extruder and hotbed when printer is power on to avoid the scald.
3.9 Before installation please remove the protective paper.
3.10 Before printing please paste on crepe paper.
4. Preparatory Work
1. Tool and kit preparing: one level desk at more than 2 sq. m. size, one computer, one scissor, SD card
reader, power supply and so on.
2. Open the box you got, and read the “Guide“ from the SD card. We suggest that you should copy all
the documents to the computer from the SD card and then start assembling according to the
“Guide” (SD-Card: \Installation Instruction\ALUNAR 3D Printer M508 Quick Start Guide)
5. Preinstallation Checklist
5.1 Step Way of Opening Box
Please look over the whole box appearance and make sure whether the box is damaged (if damaged,
please feel free to contact with our customer service); and then please open the box and check the kits list as
per “opening the carton” (SD-Card: \Packing list\Open the carton.)And “Video of opening carton” (SD-Card:
\Installation Instruction\Video\ Open Carton.MP4)
5.2 Take an account of kits
Please check out all the parts and make sure if any part is lost or damaged as per the “Packing List”
(SD-Card: \Packing list) and video “Open carton” (SD-Card: \Installation Instruction\Video\Open Carton.mp4.)
Please feel free to contact our customer service once you find out that you lost or got any defective parts
(except leading by the inartificial reason). We will try our best to settle your problems as soon as possible）.
6. Assembly and Calibration for M508
M508 assembly: Please assembly the printer by following the step1- step7 on assembly diagram and video,
and pay attention the prompt for key of assembling.(SD-Card: \Installation Instruction\Video)

6.1 The main machine structure
6.2 Step1 Frame assembly
Video (SD-Card: \Installation Instruction\Video\1-Frame assembly.mp4)

6.3 Step2 Y axis assembly and hotbed assembly
Video (SD-Card: \Installation Instruction\Video\2-Y-Axis and Hot bed Assembly.mp4)

6.4 Step3 Z axis assembly and X axis assembly
Video (SD-Card: \Installation Instruction\Video\ 3-Z-X-Axis Assembly.mp4)

6.5 Step4 Extruder assembly
Video (SD-Card: \Installation Instruction\Video\ 4-ExtruderAssembly.mp4)

6.6 Step5 LCD assembly
Video (SD-Card: \Installation Instruction\Video\ 5-LCD-Assembly.mp4)

6.7 Step6 power and mainboard assembly
Video (SD-Card: \Installation Instruction\Video\ 6-Power and Mainboard Assembly.mp4)

6.8 Step7 Filament rack assembly
Video (SD-Card: \Installation Instruction\Video\ 7-Filament Rack Assembly.mp4)

7. Testing and Commissioning
7.1 Power on test
When connecting the power supply to your printer, please make sure whether the power indicator light is on,
LCD screen show correctly or not, hotbed and the extruder can be heated rightly or not, the thermistor, turbine
fan and radiator fan works normally or not; (SD-Card:\ Installation Instruction\ Video\ Power On Inspection.mp4)
7.1.1 Turn on the power switch, LCD display, as shown in Figure
7.1.2 Fan check
7.1.3 Nozzle and hot bed heating inspection
“
Prepare” →“Preheat PLA”
7.1.4 Back to the origin inspection
“
Prepare” →“Auto Home”
X axis will move towards left, Y axis will move towards back, Z axis will move down, each axis will stop
moving till their limit switch
Switch on the power, this fan works
OK
NG
NG
OK

7.2 Hotbed leveling test:
Hotbed leveling test: Please make calibration to level the hotbed according to the video(SD-Card:\Installation
Instruction\Video\Hot Bed Leveling.mp4)After assembling, you need to level the bed when firstly print
7.2.1 Rough Debugging to level hotbed
7.2.1.1 Adjust the screws at the 4 angle of the hotbed to make the screws 4mm out of the nut (Picture 7.1)；
7.2.1.2 Move the nozzle as near as possible to the hotbed, and pull the extruder with hand to the upper
everywhere of hotbed to check if the distance between the nozzle and 4 angle of hotbed is
accordant(Picture7.2);
7.2.1.3 Hold the T coupling at left& right bottom of Z axis with hand and rotate it to make the nozzle to 4mm
above the hotbed (Picture7. 3, 7.4)
7.2.1.4 Move the Z axis limit switch to the proper position, to make that the Z axis stop once the bottom of left
Z axis nut support meet the sphere of limit switch (Picture 7.5)
X axis move
Z axis move
Y axis move
Picture 7.1 Picture 7.3 Picture 7.2
4mm
4mm

7.2.2 Accurate Debugging
7.2.2.1 Auto home and make the XYZ axis back to origin (Picture 7.6)；
7.2.2.2 Screw the screws at 4 angle of hotbed to make the nozzle above 1mm to the hotbed (Picture 7.7)
(PS: After Auto home, please click “Disable Steppers” or turn off the power, otherwise, you will can’t move
the XYZ axis by hand)
7.2.3 Fine Debugging when printing
Please check the printing status of first layer when you first printing by your printer. If you need, you can
screw the screws at 4 angle of hotbed to the best position (as shown on picture 7.10)
The different printing effect depends on the different distance between nozzle and hotbed
：
7.3 Change the Filament
Watch the video “Manually Change Filament “and get the operation way of this special feature of this printer
(SD-Card: \Installation Instruction\Video\ Manually Change Filament.MP4)
7.3.1 Change the Filament when not printing
Pull out the filament: Firstly preheat the nozzle to the exact temperature(PLA：200～220℃，ABS：240～260℃)
Once the temperature is up to the same as setting, press the upper aluminum piece on the extruder motor with
left hand, meanwhile push down to extrude part of filament and then pull out it rapidly with right hand.(PS:Don't
pause in the process to avoid the jam lead by the cooling midway. Picture 7.11, 7.12)
(SD-Card: \Installation Instruction\Video\ Change Filament When Printing.MP4)
Insert the Filament
：
Press the upper aluminum piece on the extruder motor and meanwhile insert the filament
into the throat (You can cut the filament into oblique angle with scissor to plug in smoothly. Picture 7.13), push
down to extrude part of filament (Picture7.12), then let the aluminum piece go, finally clear up the filament
extruded.
Picture 7.4 Picture 7.5
Picture 7.6
P
0.1mm
Picture 7.7
Picture 7.8Picture 7.9 Picture 7.10
The distance between nozzle and
hotbed is too high
The distance between nozzle
and hotbed is proper
The nozzle is too close to hotbed