background image

Cleaning procedures: 
1.

 

Turn off the printer 

2.

 

Wait  the  print  head  to  cool  off  completely  if  printing  job  just  finished.  Open  the 

cover to find the print head (see the picture); 
3.

 

Roll  the  platen  and  clean  the  dust  or  smudge  on  it  with  alcohol  cotton  ball 

(drained); 
4.

 

Clean the dust or smudge on the print head with alcohol cotton ball (drained) or an 

exclusive printer cleaning pen (needs to be purchased).   

5.

 

wait 5-10 minutes so that the alcohol has been volatilized before closing the cover.

 

 

 
Note: 
(1)

 

Turn off the printer before cleaning. 

(2)

 

Avoid touching the print head with hands or metal stuff. Do not scratch print head, 

platen or sensor surface with tweezers or similar stuff.   
(3)

 

Do not clean print head or platen with organic solvent like petrol or acetone.   

(4)

 

After alcohol has been volatilized, turn on the printer.         

 

08

TROUBLE SHOOTING GUIDE   

 

 

1.

 

The printer only delivers paper without printing contents.   

(1)

 

Check if the print paper is reversely laid. If not,  double click “On/Off button” to 

print the self-test page. 
(2)

 

If the self-test page cannot be printed, the printer is malfunctioning. If the self-test 

page is correct, check the paper or APP.   

 

 

2.

 

Blurry printing 

 

(1)

 

Check the print density whose default value is 3 for the best printing effect. 

 

(2)

 

If the prints have a horizontal line or only some of contents can be printed, check 

if the print head is clogged and clean it with alcohol. 

 

(3)

 

If the print quality is poor, please use NiiMbot paper range.   

 

 

 

Summary of Contents for NIIMBOT B21

Page 1: ...anual CONTENTS 1 Packing list 2 Component description 3 Charging issue 4 Indicator description 5 Settings 6 Consumables installation 7 Printing cleaning 8 Troubleshooting guide 9 Warnings 10 Notes 11 Software download 12 Warranties ...

Page 2: ...SB TYPE C cable It is suggested to use 5V 2A power adapter Consumers shall use the power adapter that has obtained China Compulsory Certification CCC and met the standard requirements 1 One printer 2 One USB TYPE C cable 3 One user manual including instructions warranties and certificate ...

Page 3: ...eady light Bluetooth connected Red light Flashing Malfunctions including but not limited to cover open lack of paper etc Red light Steady light Charging Buzzer Buzzing It happens when turning on and off the printer 05 Settings 1 Turn on the printer Press and hold On Off button for 2 seconds to turn on the printer 2 Paper feed Press On Off button to feed the paper 3 Self test page printing When the...

Page 4: ...on functions When the printer is low on battery it will shut down automatically 6 Bluetooth connection When the Bluetooth is connected the mobile App will show corresponding indication 7 When the USB is connected successfully PC software will show corresponding indication 8 Power indicator When plugging in the power adaptor the red light is on steadily 9 Emergent stop Stop the printing job by pres...

Page 5: ...06 Consumables installation Step 1 Peel off the seal Step 2 Press down the lever to open the cover Step 3 Move apart the plates ...

Page 6: ...inting side face the print head Step5 After loading the paper the plates must be fixed to avoid printing distortion Close the cover with some paper left outside the cutter Note If the paper is reversely laid the printer will not response ...

Page 7: ... issue If any problem below arises please clean some parts inside the printer 1 Blurry printing 2 Loud noise when feeding and back feeding the paper 3 There is glue residue or dust sticking to the roll Print head ...

Page 8: ...laten or sensor surface with tweezers or similar stuff 3 Do not clean print head or platen with organic solvent like petrol or acetone 4 After alcohol has been volatilized turn on the printer 08TROUBLE SHOOTING GUIDE 1 The printer only delivers paper without printing contents 1 Check if the print paper is reversely laid If not double click On Off button to print the self test page 2 If the self te...

Page 9: ...s the printer is malfunctioning A Lack of paper error prompts 1 Check if the printer paper has been used up 2 If not make sure if the cover is properly locked Loose cover may result either shifted printouts or failed paper detection 5 Unexpected stop while printing In order to ensure the reliability of the printer multiple protection orders are designed The printer will stop working because of Lac...

Page 10: ...temperature and high humidity environments or to water to avoid short circuits that can cause the battery to heat up smoke deform damage or even explode If the power adapter comes into contact with water or other liquid cut off the power immediately When you notice smoke or an odor from the printer or power adapter unplug the power adapter immediately to avoid burns 4 Do not squeeze mechanically v...

Page 11: ...the printer is not used for long time Otherwise the battery will become useless and even cause battery leakage which results in the damage to the printer 7 If the battery fails to meet the performance requirements contact the after sales service personnel 8 Use NiiMbot original paper otherwise poor print quality or damage to the printer may happen 9 The time of preservation of printouts is related...

Page 12: ... 3 Please click Tutorial at the right top corner to watch the tutorial videos on printer functions ...

Page 13: ...ology Co Ltd Sample Description remembrance portable printer Trade Mark NIIMBOT Model number B21 C B21 C2B B21 C2W B21 C2U B21 D B21 D2B B21 D2W B21 D2U B21 A B21 B Operating Temperature 10 C to 40 C This product is a fixed location To comply with RF exposure requirements a minimum separation distance of 20cm must be maintained between the user s body and the device including the antenna Use only ...

Page 14: ...occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment...

Page 15: ...Factory inspection Customer service 400 991 8305 ...

Reviews: