2AKLL-CJ2703D Printer

CJ270 User Guide EN/CN - A01 1. Please refer to this Guide for initial printer setup. 2. This printer uses UV-curable resin as the printing material. During operation, please ensure that the workspace is well ventilated and wear a mask and nitrile or rubber gloves to avoid inhaling fumes or direct skin contact. 1. 请您按照本指南的步骤，完成打印机的初始化设置。 2. 本机使用光敏树脂作为打印材料，操作时请确保环境通风，并佩 戴口罩与丁腈或橡胶手套，避免吸入挥发气体或直接接触皮肤。 Do not power on the printer before the shipping fixtures have been removed. 请勿在打印机运输用固定件拆装完成之前通电。 安全提示 Safety Notice 01 CONTENTS WARNING LABELS NOTICE 1. Printer Overview 1.1 Printer Components 1.1.1 Printer Appearance 1.1.2 Ports and Switches 1.1.3 Printhead and Build Platform 1.1.4 Resin Supply Module 1.2 Technical Specifications 2. Network Connection 3. Software Overview 3.1 Download and Installation 3.2 Basic Setup 4. Build Platform 4.1 Removing the Build Plate 4.2 Installing the Build Plate 5. Adding Materials 5.1 Material Loading and Card Scanning 5.2 Resin Overview 5.2.1 Part Resin 5.2.2 Support Resin 5.3 Resin Card System 5.3.1 Functions 5.4 How to Add Resin 5.5 Resin Shelf Life 6. Printing 6.1 Device Preheating 6.2 Checking the Resin and Build Plate 6.3 Printing Operation 6.3.1 Transferring Files from the Computer 6.3.2 Printing via USB 6.3.3 Printing Directly from the Device 6.4 Removing the Model from the Build Platform 6.5 Model Post-Processing 6.5.1 Preliminary Support Removal 6.5.2 Surface Finishing and Residue Removal 6.5.3 Coating 6.6 Waste Disposal --------------------------- 02 ------------------------------------------- 03 ------------------------- 08 08 08 08 08 09 09 ------------------- 10 ---------------------- 12 12 12 ---------------------------- 14 14 14 ------------------------ 15 15 15 15 16 16 16 17 18 -------------------------------------- 19 19 19 19 21 22 22 23 23 23 24 28 30 7. Other Printer Functions 7.1 Power On/Off and Restart 7.2 Printhead Calibration 8. FAQ 8.1 What to do if the wrong resin is loaded 8.2 What to do if the printer cannot connect to the computer 8.3 Handling an Abnormal Power Loss 9. Daily Maintenance 9.1 Cleaning the Build Plate 9.2 Cleaning and Unclogging Nozzles 9.3 Replacing the Planarizer Wiper 9.4 Replacing the Resin Station Wiper 9.5 Cleaning the Waste Resin Tank 9.6 Cleaning the Roller and Waste Tray 9.7 Storage Recommendations for Long-Term Non-Use 10. Help and Support ---------------- 31 31 33 -------------------------------------------- 34 34 34 35 ---------------------- 36 36 36 37 37 37 38 38 --------------------- 39 02 WARNING LABELS It is strictly prohibited to tear off the warning label. Otherwise, the party responsible for such action shall bear all consequences arising therefrom, and our company shall not be held liable. Notice Danger： Persons with pacemakers must not approach this device! It contains strong magnets that may interfere with pacemaker operation. Warning: This component contains moving parts. Keep your body, clothing, and long hair at a safe distance during operation to prevent entanglement. Warning: This component contains UV lamps that emit radiation during operation. Do not look directly at the light source, as this may cause skin burns or permanent eye damage. Appropriate protective measures must be taken during operation. Warning: Electrical hazard. Live electrical components are present inside the device. Risk of electric shock. Warning: Hot surface. This component may become hot during operation. Do not touch to avoid burns. Warning: Risk of top cover falling! Be careful when opening or closing the top cover to prevent injury. 03 NOTICE SAFETY NOTICE: PLEASE CAREFULLY READ AND STRICTLY FOLLOW ALL THE SAFETY WARNINGS AND NOTICES BELOW ALL THE TIME. EMERGENCY HANDLING Note: Each 3D printer undergoes print testing before leaving the factory. As a result, the build plate may have minor scratches, and small amounts of residual resin may be present on the resin bottles, nozzle surface, and within the resin station's maintenance area. These are normal and do not affect performance. If smoke, unusual odors, or resin leakage occurs, immediately turn off the main power and unplug the power cord. Do not attempt to repair the device yourself. Contact your dealer or a service center. Skin Contact: If resin, waste resin, or other liquids used with this product come into contact with skin, wipe off immediately and wash thoroughly with soap and water. Seek medical attention if discomfort persists. Eye Contact: If resin, waste resin, or other liquids enter the eyes, immediately flush with plenty of water for at least 15 minutes (remove contact lenses after flushing, if worn). Seek immediate medical attention. Ingestion or Inhalation: If resin, waste resin, or other liquids are ingested or inhaled, immediately rinse the mouth or move to fresh air. Do not induce vomiting. Seek immediate medical attention. Inducing vomiting may cause the liquid to enter the airways. If a large amount of vapor is inhaled, move to a well-ventilated area, keep warm, and rest in a position comfortable for breathing. If symptoms do not improve, seek medical attention immediately. WARNING WARNING If resin leakage occurs, immediately disconnect the power，manually move the carriage to the left initial position and contact qualified professionals. IMPORTANT CAUTION INSTALLATION SITE Do not install the device in locations with flammable or explosive materials, open flames, moisture, splash-prone areas, or areas accessible to children. 04 Avoid installing in environments with heavy dust, strong airflow, vibration, direct sunlight, rapid temperature or humidity changes, chemical gases (e.g., acid mist, amines), or excessive noise. OPERATING ENVIRONMENT Temperature: 18-30°C; humidity: 30-70%RH (non-condensing); precision-guaranteed range: 20-25°C CAUTION If ventilation is poor, a ventilation system must be installed. Exhaust ports must meet regulations and valves must remain open. IMPORTANT INSTALLATION SPACE The device must be placed in a dry, well-vent…

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Covered Equipment Attestation Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name 2AKLL-CJ270 CJ270 We, Applicant Company Name: Zhejiang Flashforge 3D Technology CO., Ltd. Address: No. 518, Xianyuan Road, Jinhua, Zhejiang, China Phone: +86-571-89774128 certify that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. This includes the cybersecurity and anti-virus software produced or provided by Kaspersky Lab, Inc. or any of ist successors and assignees. We certify that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2026-07-09 Signature Date Name / Title: Qian Wang / Manager Company: Zhejiang Flashforge 3D Technology CO., Ltd. Address: No. 518, Xianyuan Road, Jinhua, Zhejiang, China Phone: +86-571-89774128 Fax: +86-571-89774128 E-Mail: [email protected]

Due Diligence Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern FCC ID Model name 2AKLL-CJ270 CJ270 Pursuant to KDB 986446 D01 Covered Equipment Guidance the evaluation of the product above shows compliance for the following reasons: Compliance Evaluation process Results Inherent compliance The chipset(s) used is not capable of running the cybersecurity and/or anti- virus software Compliance The memory used does not allow the running the cybersecurity and/or anti- virus software Compliance The storage capacity does not allow the running the cybersecurity and/or anti-virus software Compliance The operating system used is not capable of running the cybersecurity and/or anti-virus software Compliance No inherent compliance Based on software bill of material Based on scan for running software on the device Based on filesystem scan for cybersecurity and/or anti-virus software The equipment for which authorization is sought complies with the rules and fulfils the requirements as detailed in the above mentioned KDB. Evaluation performed by Company Name: MAXLAB Testing Co., Ltd. Contact Name: Harry Chen Address: 1/F, Building B, Xinshidai GR Park,Shiyan Street, Bao'an District, Shenzhen,Guangdong, 518052, People’s Republic of China Phone: +86-15691418608 Email: [email protected] Signature: Date: 2026-06-04

Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products: FCC ID Model name 2AKLL-CJ270 CJ270 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are: • the Operational Description • the Block Diagram • the Schematics • the Part List • the Tune up Information The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2026-07-09 Signature Date Name / Title: Qian Wang / Manager Company: Zhejiang Flashforge 3D Technology CO., Ltd. Address: No. 518, Xianyuan Road, Jinhua, Zhejiang, China Phone: +86-571-89774128 Fax: +86-571-89774128 E-Mail: [email protected]

MAX Testing Co.,Ltd. Page1 / 18 EUT PHOTO(External Photos) FCC ID: 2AKLL-CJ270 MAX Testing Co.,Ltd. Page2 / 18 MAX Testing Co.,Ltd. Page3 / 18

FCCIDLABELINGANDLOCATION FCCIDLabel FCCIDLabelLocation Thelabelshownshallbepermanentlyaffixedataconspicuouslocationonthedeviceandbe readilyvisibletotheuseratthetimepurchase(Labelingrequirementsper2.925) 3DPrinter FCCID:2AKLL-CJ270

MAX Testing Co.,Ltd. Page4 / 18 EUT PHOTO(Internal Photos) FCC ID: 2AKLL-CJ270 MAX Testing Co.,Ltd. Page5 / 18 MAX Testing Co.,Ltd. Page6 / 18 MAX Testing Co.,Ltd. Page7 / 18 MAX Testing Co.,Ltd. Page8 / 18 MAX Testing Co.,Ltd. Page9 / 18 MAX Testing Co.,Ltd. Page10 / 18 MAX Testing Co.,Ltd. Page11 / 18 Coil antenna MAX Testing Co.,Ltd. Page12 / 18 MAX Testing Co.,Ltd. Page13 / 18 MAX Testing Co.,Ltd. Page14 / 18 MAX Testing Co.,Ltd. Page15 / 18 MAX Testing Co.,Ltd. Page16 / 18 DF8015B24V-CF42ANN2 DB3510B24M-CF65A MAX Testing Co.,Ltd. Page17 / 18 HDB0324UG DF3010B24H-CF0CA MAX Testing Co.,Ltd. Page18 / 18 DF4010B24H-EF80N 42SHDC4083ZY-32B

MAXLABTestingCo.,Ltd.ReportNo.:MAX26031911P01-R01RF RFTESTREPORT ReportReferenceNo........................:MAX26031911P01-R01RF FCCID................................................:2AKLL-CJ270 Compiledby (position+printedname+signature)..: Engineer/CindyZheng Supervisedby (position+printedname+signature) .. : Manager/HaleyWen Approvedby (position+printedname+signature)..: RFManager/VivianJiang Dateofissue.........................................:June4,2026 TestingLaboratoryName................:MAXLABTestingCo.,Ltd. Address.................................................: 1/F,BuildingB,XinshidaiGRPark,ShiyanStreet,Bao'anDistrict, Shenzhen,Guangdong,518052,People’sRepublicofChina Applicant’sname ............................... :ZhejiangFlashforge3DTechnologyCo.,Ltd. Address ................................................. : No.518,XianyuanRoad,JinhuaCity,Zhejiang321000,China Manufacturer’sname ........................ :ZhejiangFlashforge3DTechnologyCo.,Ltd. ManufacturerAddress ......................... : No.518,XianyuanRoad,JinhuaCity,Zhejiang321000,China Testspecification..............................: Standard................................................:KDB447498D01GeneralRFExposureGuidancev06 MAXLABTestingCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe MAXLABTestingCo.,Ltd.isacknowledgedascopyrightownerandsourceofthematerial.MAXLABTesting Co.,Ltd.takesnoresponsibilityforandwillnotassumeliabilityfordamagesresultingfromthereader's interpretationofthereproducedmaterialduetoitsplacementandcontext. Equipmentdescription.....................: 3DPrinter TradeMark............................................:Flashforge Model/Typereference.........................:CJ270 ListedModels.....................................:N/A Modulation...........................................:ASK Frequency..............................................13.56MHz Rating.....................................................:AC100-240V~50/60Hz,250W Result.....................................................:PASS MAXLABTestingCo.,Ltd.ReportNo.:MAX26031911P01-R01RF RFExposureEvaluation Limits Thecriterialistedinthefollowingtableshallbeusedtoevaluatetheenvironmentimpactofhumanexposure toradiofrequency(RF)radiationasspecifiedin1.1307(b) AccordingtoKDB447498D01GeneralRFExposureGuidancev06,Unlessspecificallyrequiredbythe publishedRFexposureKDBprocedures,standalone1-gheadorbodyand10-gextremitySARevaluationfor generalpopulationexposureconditions,bymeasurementornumericalsimulation,isnotrequiredwhenthe correspondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. LimitsforMaximumPermissibleExposure(MPE) Frequencyrange (MHz) Electricfield strength (V/m) Magneticfieldstrength (A/m) Powerdensity (mW/cm 2 ) Averagingtime (minutes) (A)LimitsforOccupational/ControlledExposures 0.3–3.06141.63*(100)6 3.0–301842/f4.89/f*(900/f 2 )6 30–30061.40.1631.06 300–1500f/3006 1500–100,00056 (B)LimitsforGeneralPopulation/UncontrolledExposure 0.3–1.346141.63*(100)30 1.34–30824/f2.19/f*(180/f 2 )30 30–30027.50.0730.230 300–1500f/150030 1500–100,0001.030 f=frequencyinMHz Friistransmissionformula:Pd=(Pout*G)/(4*pi*r 2 ) Where Pd=powerdensityinmW/cm 2 ,Pout=outputpowertoantennainmW; G=gainofantennainlinearscale,Pi=3.1416; R=distancebetweenobservationpointandcenteroftheradiatorincm PdidthelimitofMPE,1mW/cm 2 .Ifweknowthemaximumgainoftheantennaandthetotalpowerinputto theantenna,throughthecalculation,wewillknowthedistancerwheretheMPElimitisreached. TestProcedure SoftwareprovidedbyclientenabledtheEUTtotransmitandreceivedataatlowest,middleandhighest channelindividually. MAXLABTestingCo.,Ltd.ReportNo.:MAX26031911P01-R01RF TestResultofRFExposureEvaluation ForNFC TestProcedure TXfrequencyrange:13.56MHz,Limit:824/13.56=60.77V/m Devicecategory:Mobiledevice(Distance:20cm) Max.FieldStrength:74.83dBuV/m@3m @20cm=@3m+40*log(3/0.2)=121.87dBuV/m For13.56MHz:121.87dBuV/m=10 (121.87-120)/20 =1.24V/m<60.77V/m Conclusion:NoSARisrequired.

Zhejiang Flashforge 3D Technology Co., Ltd. Address: No. 518, Xianyuan Road,Jinhua City, Zhejiang 321000, China Operation Frequency:13.56MHz Modulated Type: 1 Antenna Gain: 0dBi Antenna Type: PCB Loop Coil Antenna We statement that All measurements were performed radiated and therefore additional antenna gain documentation is not required. Model: CJ270

MAXLABTestingCo.,Ltd.ReportNo.:MAX26031911P01-R01 Page1of26 Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetestlaboratory. FCCPART15SUBPARTCTESTREPORT FCCPART15.225 ReportReferenceNo........................:MAX26031911P01-R01 FCCID. ................................................ :2AKLL-CJ270 Compiledby (position+printedname+signature)..: Engineer/CindyZheng Supervisedby (position+printedname+signature) .. : Manager/HaleyWen Approvedby (position+printedname+signature)..: RFManager/VivianJiang Dateofissue ......................................... :June4,2026 TestingLaboratoryName ................ : MAXLABTestingCo.,Ltd. Address.................................................: 1/F,BuildingB,XinshidaiGRPark,ShiyanStreet,Bao'anDistrict, Shenzhen,Guangdong,518052,People’sRepublicofChina Applicant’sname ............................... : ZhejiangFlashforge3DTechnologyCo.,Ltd. Address ................................................. : No.518,XianyuanRoad,JinhuaCity,Zhejiang321000,China Manufacturer’sname ........................ : ZhejiangFlashforge3DTechnologyCo.,Ltd. ManufacturerAddress ......................... : No.518,XianyuanRoad,JinhuaCity,Zhejiang321000,China Testspecification .............................. : Standard ................................................ : FCCPart15SubpartC,Section15.225 ANSI C63.10-2020+Cor.1-2023+C63.10a-2024+ErratatoC63.10a- 2024 MAXLABTestingCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe MAXLABTestingCo.,Ltd.isacknowledgedascopyrightownerandsourceofthematerial.MAXLAB TestingCo.,Ltd.takesnoresponsibilityforandwillnotassumeliabilityfordamagesresultingfromthe reader'sinterpretationofthereproducedmaterialduetoitsplacementandcontext. Equipmentdescription ..................... : 3DPrinter TradeMark............................................: Flashforge Model/Typereference.........................:CJ270 ListedModels......................................: N/A Modulation...........................................:ASK Frequency..............................................13.56MHz Ratings ................................................... :AC100-240V~50/60Hz,250W Result.....................................................:PASS MAXLABTestingCo.,Ltd.ReportNo.:MAX26031911P01-R01 Page2of26 Contents 1TESTSTANDARDS ........................................................................................................................................... 3 2SUMMARY ................................................................................................................................................................ 4 2.1GeneralRemarks.........................................................................................................................................................4 2.2ProductDescription...................................................................................................................................................4 2.3EquipmentUnderTest...............................................................................................................................................4 2.4ShortdescriptionoftheEquipmentunderTest(EUT) ..................................................................................... 4 2.5BlockDiagramofTestSetup ................................................................................................................................... 4 2.6SpecialAccessories ................................................................................................................................................... 4 2.7RelatedSubmittal(s)/Grant(s)...............................................................................................................................5 2.8Modifications................................................................................................................................................................5 3TESTENVIRONMENT.....................................................................................................................................6 3.1Addressofthetestlaboratory ................................................................................................................................. 6 3.2TestFacility ................................................................................................................................................................... 6 3.3Environmentalconditions ......................................................................................................................................... 6 3.4Summaryofmeasurementresults.........................................................................................................................7 3.5Statementofthemeasurementuncertainty........................................................................................................7 3.6EquipmentsUsedduringtheTest..........................................................................................................................8 4TESTCONDITIONSANDRESULTS ................................................................................................ 10 4.1ACPowerConductedEmission ............................................................................................................................ 10 4.2RadiatedEmission .................................................................................................................................................... 13 4.3FrequencyTolerance...............................................................................................................................................21 4.420dBBandwidth........................................................................................................................................................22 4.5AntennaRequirement..........................…

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MAX Testing Co.,Ltd. Page 1 of 2 Test Setup Photos FCC ID: 2AKLL-CJ270 MAX Testing Co.,Ltd. Page 2 of 2