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1. Preface 

Dear User, 

To ensure the best performance of your e-bike, please read 
through the JK-LCD product introduction carefully before use. 
This user manual covers: Hardware installation, set up and 
normal operation. It will also help to limit any confusion and 
assist in you to resolve any malfunctions. 

 

2. Appearance and Dimensions   

   

JK-LCD  housing  material 
is  made  from  PC  plastic 
with 

working 

temperature range: -20℃ 
to  60℃.  This  material 
ensures good mechanical 
performance 

of 

the 

product. 
Display  Dimensions  and 

Installation (Unit:mm) 

Summary of Contents for JK-LCD

Page 1: ...KING METER USERS GUIDE JK LCD ...

Page 2: ... speed mode current average speed 4 7 3Distance Trip ODO Trip time 5 7 4 Toggle headlight 6 7 5 Push assistance 6km h 6 7 6 PAS Level 7 7 7 Battery capacity and power 7 7 8 Error code 8 8 Setting 9 8 1 Wheel size 9 8 2 Speed limit 10 8 3 Backlight brightness 10 8 4 Units 11 9 Wire sequence 12 10 About the product code 12 11 FAQ 13 12 Warranty and coverage 13 13 Version 14 ...

Page 3: ...s Hardware installation set up and normal operation It will also help to limit any confusion and assist in you to resolve any malfunctions 2 Appearance and Dimensions JK LCD housing material is made from PC plastic with a working temperature range 20 to 60 This material ensures good mechanical performance of the product Display Dimensions and Installation Unit mm ...

Page 4: ...WN and is P 3 Functions Summary Functions Battery indication Speed indication Real time Max and Average Distance indication Current trip and Total distance PAS level Backlight Headlight toggle Push assistance 6km h Power indicator Error codes Customisable parameters such as Wheel diameter Speed limit Backlight Units ...

Page 5: ...o not connect disconnect it with power on Avoid striking or knocking the display Do not remove the waterproof film attached to the display as this may impair its waterproofing In the case of errors or malfunctions the display should be returned to your local supplier for repairs replacements ...

Page 6: ...nd hold P for several seconds to toggle the power on or off to both the display and controller While the power is off the display will no longer consume power with a leakage current is less than 1uA The bike will be shut down automatically if it is left idle for 10 minutes 7 2 Selecting Speed Mode Current Average Max On turning on the display the default speed mode is current speed Pressing and ho...

Page 7: ...3 Distance Trip ODO Trip Time On turning on the display the default distance mode is Trip Distance Pressing and holding M for 3 seconds will cycle through the other distance modes in the order of Trip Distance ODO Trip Time Reset either the Trip Distance or Time by pressing both M D while it is displayed Trip TRIP ODO Trip Time TIME ...

Page 8: ...ht Press and hold for short time to toggle on off the headlight Illustration 7 5 Push Assistance 6km h Press and hold D to enable the push assistance mode The motor will cause the bike to travel at 6km h 6km h illustration ...

Page 9: ...e highest The default level is level 1 Level 1 level 2 level 5 7 7 Battery Capacity and Power When the battery is full all five segments of the battery will be illuminated When the battery is critically low the battery will have no segments and will flash The WATT bar will progressively fill as the motor power usage increases Full capacity low capacity under voltage ...

Page 10: ...normal functionality The e Bike will cease functioning so long as an error code is shown Error code showing Error code meaning solutions 21 Abnormal Current Check if the phase of motor is short circuiting 22 Abnormal Throttle Check that the throttle is not in it s active state 23 No phase state Check if the phase wire is normal Check if the cable is firmly connected with controllers ...

Page 11: ...l Communication Check if the display and controller are connected properly 8 Setting While powered on press and hold U and D for 2 seconds to enter into the settings menu 8 1 Wheel Size The range of optional wheel sizes is 16 18 20 22 24 26 700C and 28 The default wheel size is 26 inches Pressing U and D to choose the wheel size and then press M to confirm the wheel size and to enter into the next...

Page 12: ...ll cut down the output power of the motor to protect rider The speed limit range is from 12km h to 40km h The default of speed limit is 25km h Pressing U and D to alter the value and then press M to confirm to enter into next setting Speed limited interface 8 3 Backlight Brightness The backlight is always on but is different depending on whether or not A the Headlight is on ...

Page 13: ... being the lowest and level 3 being the highest The default value is level 1 Pressing U and D will alter the brightness and pressing M will confirm A light is on B light is off 8 4 Units Press U or D to change the units from Mile and MPH into km and km h Press M to save ...

Page 14: ... Colours Function 1 Red VCC Power cable of display 2 Blue K Power cable of controller 3 Black GND GND 4 Green RX Data In 5 Yellow TX Data Out Remarks Display may use waterproof connector in this case the wires cannot be seen 10 About the Product code The Product code is displayed in two rows Row 1 500101201 ...

Page 15: ...controller Q How do I deal with the error codes A Contact your local e bike dealer for maintenance 12 Warranty and Coverage 1 Any fault with the product as a direct result of the quality will be replaced 2 Warranty period 24 months from the delivery time of the display from the factory The following circumstances are not covered by the Warranty 1 Opened case 2 Damaged connector 3 Scratched or dama...

Page 16: ... manual has been based on the general purpose software version V1 0 by Tianjin KING METER Electronic Co Ltd Some versions of the LCD may appear and behave slightly different depending on the hardware and software versions ...

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