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Johnson J-6800 Service Manual
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Johnson J-6800 Service Manual

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J-6800 MASSAGE CHAIR
SERVICE MANUAL
2014/02/26
Version 1
Johnson Health Tech. Co., Ltd.

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Summary of Contents for Johnson J-6800

  • Page 1 J-6800 MASSAGE CHAIR SERVICE MANUAL 2014/02/26 Version 1 Johnson Health Tech. Co., Ltd.
  • Page 2 5.1 Replace the machine core 5.2 Software update 5.3 Adjust machine core motor current  5.4 Complete machine breakdown drawing 5.5 Machine core breakdown drawing  5.6 Lower control panel breakdown drawing  Thank you! (Contact us) Johnson Health Tech. Co., Ltd.
  • Page 3 The circuit baseplate mixes high voltage (AC110V, AC220V) and low voltage (12V, 5V), which may cause electric shock accident; so please do not have direct contact without preparations. Johnson Health Tech. Co., Ltd.

  • Page 4: Product Specifications

    1.Product Specifications： Johnson Health Tech. Co., Ltd.
  • Page 5 1.Product Specifications： Johnson Health Tech. Co., Ltd.
  • Page 6 5 seconds and the controller will display “ - - ” 2. Then press whole body key to enter engineering mode whole body 3. In the engineering mode,“ P0 ” will be displayed Johnson Health Tech. Co., Ltd.
  • Page 7 7. After element selection, use massage intensity Weak strong weak to adjust the element speed, and the intensity will be displayed as the air pressure strength, with one to three representing from weak Air pressure strength to strong Johnson Health Tech. Co., Ltd.
  • Page 8 9. After entering the mode, press emergency stop key to return to the previous emergency stop layer of menu; this key has the same function as the ESC key of the computer keyboard Johnson Health Tech. Co., Ltd.
  • Page 9 Exit engineering mode Air bag strength (panel) Speed selection (3: high, 2: medium, 1: low) Operation Display selected element number and corresponding current or Time window position Air pressure strength Speed display (3: high, 2: medium, 1:low) Johnson Health Tech. Co., Ltd.
  • Page 10 P4 : Air bag testing mode P7 : Automatic testing mode P7 : Automatic testing mode P8 : Life testing mode P8 : Life testing mode PU : Software version check PU : Software version check Johnson Health Tech. Co., Ltd.
  • Page 11 : Front and back movement of machine core : Kneading-Forward and reverse rotation of machine core : Machine core pounding motion Motor test mode is mainly used to test if each motor works normally and to adjust chair angle when replacing elements Johnson Health Tech. Co., Ltd.
  • Page 12 LCD time window will display the digit returned by the sensor. When the digit exceeds 100, the carrying digit will display “massage intensity” (100~500) and “motion menu”. LCD sensing position display window will indicate whether the limit switch is triggered Johnson Health Tech. Co., Ltd.
  • Page 13 We can tell by the above rules that the returned value on the left figure is time window (49) + motion menu lamp signal (200) =249 Hundreds of Current speed of returned values motor motion Johnson Health Tech. Co., Ltd.
  • Page 14 D3 is a major test item; if the intensity is set to medium (air bag strength 2) and machine core forward value is greater than 50, it is likely to generate error code D0 because the current is too high to lower the sensitivity of induction mechanism Johnson Health Tech. Co., Ltd.
  • Page 15 : right hip air bag : left hip air bag : air bag on the side of thigh : thigh air bag : calf air bag : instep air bag below the : air bag above the leg Johnson Health Tech. Co., Ltd.
  • Page 16 2-4. Engineering mode: P4 Shoulder Waist Thigh side Thigh Upper leg Lower leg / instep Calf Johnson Health Tech. Co., Ltd.
  • Page 17 Press “air pressure strength” key, and the time window displays in a jumping loop of “v1”-“05”- “v1”-“05”..indicating that the lower control panel software version is v105 f. Then, the software version is 104105 Johnson Health Tech. Co., Ltd.
  • Page 18 The anomaly codes will appear on the • Error code machine’s manual controller and the machine will stop • Maintenance personnel can judge the fault conditions and anticipate maintenance materials based on the error code reported by the customer Johnson Health Tech. Co., Ltd.
  • Page 19 3. Replace the manual controller then confirm error controller and lower if the machine is normal control panel 4. Replace the lower panel and then confirm if the machine is normal 5. Ask for assistance of original factory Johnson Health Tech. Co., Ltd.
  • Page 20 1. Check if the connecting line contacts poorly Kneading seized kneading sensor of 2. Check if the sensor works normally and the machine core does not sensor is centered return signal Kneading sensor Johnson Health Tech. Co., Ltd.
  • Page 21 Up and down down sensor of machine 2. Check if the sensor works normally and code seized core does not return plate is centered signal Lower limit sensor Upper and lower position sensor Upper limit sensor Johnson Health Tech. Co., Ltd.
  • Page 22 1. Check if the machine core structure is seized Kneading overload too high 2. Replace machine core Pounding motor current is 1. Check if the machine core structure is seized Pounding overload too high 2. Replace machine core Johnson Health Tech. Co., Ltd.
  • Page 23 2. Replace machine core Abnormal Please refer to warming function anomaly in Abnormal heater band heating troubleshooting (4-6) Abnormal Please refer to warming function anomaly in Abnormal thermistor thermistor troubleshooting (4-6) Johnson Health Tech. Co., Ltd.
  • Page 24 When they move, the current advance and retreat current rises, lowering detection function. for procedure When the user’s weight is light, it may 2. Replace machine core (Please refer misjudge that it is empty to 5-1 ) Johnson Health Tech. Co., Ltd.
  • Page 25 2.Check if the sensor works normally and code plate Abnormal front front and back sensor of and back count is centered machine core does not 3. Replace machine core return signal Advance and retreat sensor Johnson Health Tech. Co., Ltd.
  • Page 26 3. Use spare parts to connect the main board to confirm if foot does not return signal machine pushrod is damaged 4. Replace main board Chair back pushrod Foot machine pushrod Johnson Health Tech. Co., Ltd.

  • Page 27: Common Troubleshooting

    (12V, 5V), which may cause electric shock accident; so please do not have direct contact without preparations. When measuring with an electric meter, basic electricity knowledge is • required to avoid short circuits or personal dangers. Johnson Health Tech. Co., Ltd.
  • Page 28 It is recommended to ask the personnel with electronic background to check and repair. There may be broken covered wires, short circuits or breakdown of electronic devices First, turn on the Press the protector to reset power supply its status Johnson Health Tech. Co., Ltd.
  • Page 29 (AC220V in mainland China) power supply of output end of EMC board is normal Possible cause: EMC board fuse damage, EMC board damage or poor contact of connecting line Turn off the power supply Remove four set screws (red arrow), Remove power supply cover (blue arrow) Johnson Health Tech. Co., Ltd.
  • Page 30 (The power must be off when measuring the fuse) When the fuse is not burned, and there is still no output voltage, replace the filter Fuse specification Johnson Health Tech. Co., Ltd.
  • Page 31 Confirm if the transformer power supply is normal. Measure transformer output end voltage: no load AC24-28V, AC12-15V, AC15-18V Possible cause: the fuse inside the transformer is damaged; replace the transformer. Voltage output plug AC12V AC15V AC24V AC24V Transformer body Johnson Health Tech. Co., Ltd.
  • Page 32 Please refer to 5-2 Software Update e. Change to the spare manual controller for operation. If it operates normally, replace the manual controller; if not so, replace the master control panel Johnson Health Tech. Co., Ltd.
  • Page 33 Unplug the power line of the electric pushrod motor which does not work, and replace with spare pushrod motor (or replace with the electric pushrod which works normally on the machine) for testing. Still does not work Replace master control panel. Works normally Replace pushrod. Johnson Health Tech. Co., Ltd.
  • Page 34 The unclear sound may be sue to incompatible headphone specification Johnson Health Tech. Co., Ltd.

  • Page 35: Individual Air Bag Can Not Be Inflated Or Inflated Sufficiently

    Use engineering mode 2-4:P4 to detect, and refer to the air bag location diagram Check if the solenoid valve works normally Check if each air channel connector leaks/air pipes are compressed and shut off; connect and fasten again/replace aged air pipes Johnson Health Tech. Co., Ltd.

  • Page 36: All Air Bags Do Not Work

    Normal (AC24-28V) Replace air pump No: check air pump power supply Replace master control panel Abnormal c. Check if the solenoid valve works normally. No: Check air valve connecting line or replace master control panel Johnson Health Tech. Co., Ltd.

  • Page 37: Abnormal Warming Function

    4-6. Abnormal warming function Abnormal warming function Treatment: Check if the connecting line terminal connection is normal Old version New version Johnson Health Tech. Co., Ltd.
  • Page 38 Check warming piece’s resistance value: Shoulder strap warming piece; normally – about 17Ω, and about 34Ω in case of unilateral damage. Check connecting line/replace warming piece Measure the resistance values of front and back sections Johnson Health Tech. Co., Ltd.
  • Page 39 USB connector, which is easily short-circuited, causing measurement difficulty; it is recommended to connect the spare directly and then observe if the warming function is restored The easy contact with the shell causes measurement failure Johnson Health Tech. Co., Ltd.
  • Page 40 Abnormal warming function Abnormal warming function Sole warming piece: normally about 48 Ω, and about 96 Ω in case of unilateral damage. Check connecting line/replace warming piece Measure the resistance values of black and red pins Johnson Health Tech. Co., Ltd.
  • Page 41 Abnormal warming function Abnormal warming function c. Measure if the master control panel has DC24V-30V output; if not, replace the master control panel These two pins are shoulder warming voltage These two pins are foot warming voltage Johnson Health Tech. Co., Ltd.

  • Page 42: Machine Core Motor Does Not Work

    Machine core forward and backward Sensor mode Johnson Health Tech. Co., Ltd.
  • Page 43 Johnson Health Tech. Co., Ltd.
  • Page 44 24V yes  replace machine core (or replace machine core motor; kneading motor is not suitable for field replacement; refer to Appendix I for the replacement of machine core） Machine core Up and Retreating Pounding adapter board down motor motor motor Kneading motor Johnson Health Tech. Co., Ltd.
  • Page 45 Confirm that if the connecting line contacts normally b. Check if the connecting line is normal c. Check if the armrest’s shortcut keys and manual controller’s rubber keys are normal. Wipe or replace them. Johnson Health Tech. Co., Ltd.
  • Page 46 If the frequency is highreplace the armrest If the frequency is lowpress the keys to return to the original state and then observe b. Check if the manual controller’s keys are seized The picture shows the key seizure Johnson Health Tech. Co., Ltd.
  • Page 47 Normally it can come down but cannot go up; the condition also includes that it can go up but cannot come down • Treatment: Check the appearance of upper and lower limit switches for damages Lower limit sensor Position sensor Upper limit sensor Johnson Health Tech. Co., Ltd.
  • Page 48 (lower) limit, it represents SENSOR anomaly or poor contact of the signal line Confirm if the signal line contacts normally Johnson Health Tech. Co., Ltd.
  • Page 49 • When the machine core’s old connector is used with a new signal line, or when the connector is plugged inversely, this phenomenon will also occur Mixing prohibited Johnson Health Tech. Co., Ltd.
  • Page 50 Signal Line Correct Connection Diagram • Incorrect sequence may cause that the machine core can come • down but cannot go up red  black black  red Johnson Health Tech. Co., Ltd.
  • Page 51 • Prepare materials as follows: Machine core unit 1 set • Prepare tools: screw driver, cable tie, diagonal cutting plier and needle-nose plier Johnson Health Tech. Co., Ltd.
  • Page 52 1. Turn off the power supply, and remove the outer shell’s 4 screws (4 screws indicated by red solid lines). 2. Remove the upper back cover; because the tenon is barbed, it is recommended to use a flathead screwdriver to help the removal Johnson Health Tech. Co., Ltd.
  • Page 53 3. Enter the engineering mode A0 (refer to 2- 1), elevate the machine core to the proper height and cut the cable tie fixing the signal line 4. Use Phillips screwdriver to loosen the ground wire screws of the signal line Johnson Health Tech. Co., Ltd.
  • Page 54 6. Loosen the left and right set screws of rear cover side plate to avoid screw breakage when the upper back side plate is propped open to remove the machine core Just loosen Avoid breakage Johnson Health Tech. Co., Ltd.
  • Page 55 8. Use the manual controller to operate the machine core (refer to 2-1) to adjust the position 9. Move the machine core roller to the upper position to prepare for removal Remove lower two screws Johnson Health Tech. Co., Ltd.
  • Page 56 8. Make the rollers on the upper sides off the rails 9. Utilize the gap of the rear cover side plate Remove the roller/plain washer and spring on the left side of the machine core Slightly pull the side cover outward Johnson Health Tech. Co., Ltd.
  • Page 57 5-1. Replace machine core Replace machine core 10. Elevate until breaking away from rack engaging state 11. Unplug the power line and signal connecting line 12. Use both hands to remove the disengaged machine core Johnson Health Tech. Co., Ltd.
  • Page 58 14. It should be noted that spring and metal gaskets are needed for the left-side roller and such materials can be obtained from the old core Johnson Health Tech. Co., Ltd.
  • Page 59 There are holes for fixing the ties indicated by red circles Note: When the signal line is not securely fixed, it may lead to occasional anomalies due to the loosened signal line during the operation Johnson Health Tech. Co., Ltd.
  • Page 60 (about 2 cm from both sides) 19. Lower the machine core to the lower limit and confirm that the sensor works normally, and adjust the metal plate properly to the center position Johnson Health Tech. Co., Ltd.

  • Page 61: Software Update

    It is recommended to install the software in the flash drive below 8GB to avoid that the • lower control panel cannot read the flash drive It is recommended to store only the file folder jfitness in the flash drive to improve • recording success Johnson Health Tech. Co., Ltd.
  • Page 62 Unplug the flash drive and test again by restarting the machine I: On /O: Off; when the power is USB connector is hidden under the cushion on, the power switch light is on Johnson Health Tech. Co., Ltd.
  • Page 63 Proper height • Proper height is indicated by the range green portion in the picture; the cushion or leather cover, as indicated by the red portion, may affect the numerical value Johnson Health Tech. Co., Ltd.
  • Page 64 30 5. If it is greater than 30, adjust through the following steps; if it is smaller than 30, confirm that the sitting posture is normal Johnson Health Tech. Co., Ltd.
  • Page 65 Steps as follows 1. Remove 6 screws on the outer shell of the massage chair’s rear cover 2. Enter the engineering mode A0 (refer to Page 10) to elevate the machine core to the proper height Johnson Health Tech. Co., Ltd.
  • Page 66 8. If the number is lower than 50, the adjustment is completed and machine is restored; if not, loosen for another 1/4 circle 9. If the adjustment is more than 2 circles, the replacement of machine core is recommended Johnson Health Tech. Co., Ltd.
  • Page 67 5-4. Complete machine Chair back unit breakdown drawing Cushion Machine core unit Right armrest Chair back pushrod Foot Left armrest pushrod Manual controller Foot machine Lower control Johnson Health Tech. Co., Ltd. unit panel unit...
  • Page 68 5-5. Machine core breakdown drawing Up and down motor Front and back motor Kneading sensor Upper and lower limits and upper and lower numbers Pounding motor Advance and Kneading motor retreat sensor Adapter board Johnson Health Tech. Co., Ltd.
  • Page 69 5-6. Lower control panel breakdown drawing Air pump Transformer Air valve Lower control panel Johnson Health Tech. Co., Ltd.
  • Page 70 謝謝各位 Johnson Wellness Support Nicholas Beese p: 1-877-217-2862 Email:Nicholas.Beese@JHTNA.com Johnson Health Tech. Co., Ltd.