Related Manuals for Johnson MC-J6900
Summary of Contents for Johnson MC-J6900
- Page 1 Issue Date 2018/4/23 Edition Doc No. JOHNSON Edition 2018/1 Revision Date Page Time 0/10 Johnson Industries (Shanghai) Co., Ltd MC-J6900 MASSAGE CHAIR Service Manual Approval Review Editor Allen Sun Allen Sun Hans Kong...
- Page 2 FOREWORD Precautions during repairs and faults: A. When disassembling, unplugging connectors and replacing parts, make sure to unplug or turn off the power. B. As semiconductors (IC, etc.) are prone to being damaged by static electricity, please use human body electrostatic discharge ground wire if it is required to directly contact the baseplate when performing operations, or touch the ground wire (ground wires of fridges, washing machines, etc.) with bare hands to discharge the static electricity of the human body before carrying out operations.
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Page 3: Table Of Contents
Content CHAPTER 1:PRODUCT SPECIFICATIONS----------------------------------------------------------------- 1 CHAPTER 2:MAINTENANCE AND STORAGE------------------------------------------------------------- 4 CHAPTER 3:ENGINEERING MODE INSTRUCTION------------------------------------------------------5 3.1 Key Operation:---------------------------------------------------------------------------------------------5 3.2 Display Information:-------------------------------------------------------------------------------------- 7 3.3 P1 Mode:---------------------------------------------------------------------------------------------------- 8 3.4 P2 Mode----------------------------------------------------------------------------------------------------- 9 3.5 P3 Mode--------------------------------------------------------------------------------------------------- 10 3.6 P4 Mode--------------------------------------------------------------------------------------------------- 11 3.7 PU Mode---------------------------------------------------------------------------------------------------12 CHAPTER 4:ERROR CODE------------------------------------------------------------------------------------ 13 CHAPTER 5:TROUBLESHOOTING-------------------------------------------------------------------------- 14 5.1 Wiring Schematic----------------------------------------------------------------------------------------14... -
Page 4: Chapter 1:Product Specifications
CHAPTER 1:PRODUCT SPECIFICATIONS... - Page 5 CHAPTER 1:PRODUCT SPECIFICATIONS...
- Page 6 CHAPTER 1:PRODUCT SPECIFICATIONS...
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Page 7: Chapter 2:Maintenance And Storage
CHAPTER 2:MAINTENANCE AND STORAGE To keep the appliance working and looking its best, please follow these cleaning guidelines once a week. Area covered with synthetic leather: For cleaning, wipe the unit with a dry cloth moistened in diluted neutral detergent and thoroughly wrung out. -
Page 8: Chapter 3:Engineering Mode Instruction
CHAPTER 3:ENGINEERING MODE INSTRUCTION 3.1 Key operation: A. When the power is on and manual controller is not yet activated(before enter the main interface), press on the manual controller at the same time for 5 seconds and the point heat controller will display “... - Page 9 CHAPTER 3:ENGINEERING MODE INSTRUCTION B.Then press full back key to enter engineering mode C.In the engineering mode,“ P0 ” will be displayed D.Use to select 8 modes, including P0~P4+P7+P8+PU down & E.In mode selection state, press to enter the mode to operate the massage chair F.After mode selection, use down again to select the element to be controlled, such as...
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Page 10: Display Information
CHAPTER 3:ENGINEERING MODE INSTRUCTION H.strong or weak air pressure strength will make the selected element forward or reverse (if such element has no forward and reverse states, it will be in motion state) I.After entering the mode, press key to return to the previous layer of menu; this key has stop the same function as the ESC key of the computer keyboard 3.2 Display information:... -
Page 11: P1 Mode
CHAPTER 3:ENGINEERING MODE INSTRUCTION Mode list: 3.3 P1 Mode: Motor test mode is mainly used to test if each motor works normally and to adjust chair angle when replacing elements. -
Page 12: P2 Mode
CHAPTER 3:ENGINEERING MODE INSTRUCTION 3.4 P2 Mode Sensor testing is mainly used to test and indicate limits and counts. When operating motor in this mode, LCD time window will display the digit returned by the sensor. When the digit exceeds 100, the carrying digit will display “massage intensity”... -
Page 13: P3 Mode
CHAPTER 3:ENGINEERING MODE INSTRUCTION 3.5 P3 Mode Current testing is mainly used to test if the motor current is too high. When the returned number exceeds 100, the carrying digit will display “massage intensity” (100~500). 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. -
Page 14: P4 Mode
CHAPTER 3:ENGINEERING MODE INSTRUCTION 3.6 P4 Mode Air bag testing is mainly used to test if the air bag works normally, the inflation rate is normal, there is leakage, etc. It can also distinguish the position of the air bag to be tested via the pattern on the manual controller. -
Page 15: Pu Mode
CHAPTER 3:ENGINEERING MODE INSTRUCTION 3.7 PU Mode Software version check mode is generally used to confirm current version of massage chair and confirm again if the update is successful after updating software a. Press “up” or “down” key to make the time window display “PU” to enter software version check function b. -
Page 16: Chapter 4:Error Code
CHAPTER 4:ERROR CODE The error code will appear on the 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. Error code area. -
Page 17: Chapter 5:Troubleshooting
CHAPTER 5:TROUBLESHOOTING 5.1 Wiring Schematic... - Page 18 CHAPTER 5:TROUBLESHOOTING Wiring Schematic Machine Core Motor Back chair motor Foot motor Foot heat Power Back chair heat Air pump 12 ways air valve 5 ways air valve Right speaker Left speaker Audio sub Bluetooth board Remote controller Armrest buttons Engineering test Software input Machine core signal...
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Page 19: Fail To Start
CHAPTER 5:TROUBLESHOOTING 5.2 Fail to start Check points: 1) Check whether there is poor connection between the power plug and the receptacle. 2) Check whether the switch has been turned on. 3) Check whether the on the remote controller has been pressed. 4) Check whether any massage function has been selected. -
Page 20: Fail To Start - Continue
CHAPTER 5:TROUBLESHOOTING 5.3 Fail to start - Continue Check points: 1) EMC board issue. 2) Transformer issue. 3) Software issue. 4) Controller issue. Solution: 1) Confirm if the power supply and EMC filter board are normal. Measure if AC110V (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. - Page 21 CHAPTER 5:TROUBLESHOOTING 2) 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(1000347562). 3) Record the software for the master control panel and manual controller again and observe if the indicator light of the master control flashes normally.
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Page 22: Pushrod Motor Does Not Work
CHAPTER 5:TROUBLESHOOTING 5.4 Pushrod Motor does not work Solution : 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. -
Page 23: Abnormal Warming Function
CHAPTER 5:TROUBLESHOOTING 5.8 Abnormal warming function Solution : 1) Check if the connecting line terminal connection is normal. 2) Check warming piece’s resistance value: – Back chair warming piece: normally about 17Ω, and about 34Ω in case of unilateral damage. Check connecting line/replace warming piece. - Page 24 CHAPTER 5:TROUBLESHOOTING – Footrest warming piece: normally about 48Ω, and about 96Ω in case of unilateral damage. Check connecting line/replace warming piece(1000373418/1000405385). 3) Measure if the master control panel has DC24V-30V output; if not, replace the master control panel(1000391515).
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Page 25: Machine Core Motor Does Not Work
CHAPTER 5:TROUBLESHOOTING 5.9 Machine Core Motor Does Not Work Solution : 1) First, rule out that the internal thermal protection of motor is caused by long-time operation 2) Use manual mode to force the motor to start, checking if it can be started. 3) Enter P2 (refer to2-2) to check if the sensor corresponding to the poor motor triggers the limit. -
Page 26: Abnormal Key Function
CHAPTER 5:TROUBLESHOOTING 4) When using the engineering mode P1 to drive the poor motor, use the electric meter to measure if the motor corresponding plug on the machine core signal adapter board has DC24V output. If no,check motor power line→ power line PASS→replace master control panel(1000391515). If yes,replace machine core(1000382973). -
Page 27: Chair Back Reclines Abnormally
CHAPTER 5:TROUBLESHOOTING 5.11 Chair Back Reclines Abnormally Solution : 1) Check if the armrest’s shortcut keys are seized. If the frequency is high, replace the shortcut key board(1000228108). If the frequency is low, press the keys to return to the original state and then observe. 2) Check if the manual controller’s keys are seized. - Page 28 CHAPTER 5:TROUBLESHOOTING 2) Enter engineering mode P2 , and see if the upper (lower) limit lamp signal is triggered; if the limit lamp signal is triggered when the machine core does not touch the upper (lower) limit, it represents sensor anomaly or poor contact of the signal line(1000306155). Note :When the machine core’s old connector is matched with a new signal line, or when the connector is plugged inversely, this phenomenon will also occur.
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Page 29: E5 Error Code
CHAPTER 5:TROUBLESHOOTING 5.13 E5 ERROR CODE Check point: 1) U/D disk check Open back upper cover ,uninstall 4 screws. Find out the U/D sensor , and check. Re-connector , make sure the connector is surely connected. Make sure the disk is clear ,no dust cover ,and in the middle position . The encoder disk can’t touch the sensor , it must have 1~3mm gap between disk and sensor. - Page 30 CHAPTER 5:TROUBLESHOOTING Check point: 2) Motor check Select auto course ,after execute , the machine core will going down.If the machine core goes down ,the U/D motor is good . If not,disconnect the connector of U/D motor , and take the connector of Tap motor to connect. Take the terminal off.
- Page 31 CHAPTER 5:TROUBLESHOOTING After execute auto course , the tapping function will active If the tapping function is active> replace machine core(1000382973) If the tapping function is not active > replace MCB(1000391515) Check point: 3) U/D limit switch module check Use engineer mode A0 to makes the machine core goes down. Remove the 2 screws in red circle , and loose the 2 screws in blue circle.
- Page 32 CHAPTER 5:TROUBLESHOOTING Make sure the both sides metal pieces opened as the picture. Use A0 to make the machine core goes up. Take a fabric to prevent the wheel pop out by the spring.
- Page 33 CHAPTER 5:TROUBLESHOOTING Touch the U/D sensor module for inspection . When you touching the limit switch , you should hear “click” sounds. If you can’t hear the noise , the limit switch module may stuck ,try to release or replace a new one(1000373506).
- Page 34 CHAPTER 5:TROUBLESHOOTING Caution! : Mark them before you replace the limit switch. The UP/ DOWN cables should not be installed incorrectly, otherwise the machine core will crash. And there should be a plastic piece on the left top. There should be a plastic on the left bottom.
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Page 35: Chapter 6:Parts Replacement
CHAPTER 6:PARTS REPLACEMENT 6.1 Air pump Power on , and lift the footrest to the top. Footrest on the top position. Power switch off , disconnect the power cord. - Page 36 CHAPTER 6:PARTS REPLACEMENT Use screw driver to uninstall 6 rivets. Uninstall the air tube and disconnect the connector. Uninstall the two screws on metal plate. Note : Not the screws on the plastic cover. They are the two screws on the metal plate.
- Page 37 CHAPTER 6:PARTS REPLACEMENT Take the air pump module out and replace(1000392758). Take inverse to set up. Power on , test the function.
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Page 38: Machine Core
CHAPTER 6:PARTS REPLACEMENT 6.2 Machine Core 1) Turn off the power supply, and remove the outer shell screws. 2) Remove the upper back cover; because the tenon is barbed, it is recommended to use a flathead screwdriver to help the removal. 3) Enter the engineering mode A0, elevate the machine core to the proper height and cut the cable tie fixing the signal line. - Page 39 CHAPTER 6:PARTS REPLACEMENT 5) Loosen the set screws of rear cover side plate (2 screws in blue circles). 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. 7) Loosen the supplementary piece screws of the upper rail.
- Page 40 CHAPTER 6:PARTS REPLACEMENT 10) Be careful that the roller on the left side may eject; assist with hands. 11) Make the rollers on the upper sides off the rails. 12) Utilize the gap of the rear cover side plate. 13) Elevate until breaking away from rack engaging state. 14) Unplug the power line and signal connecting line.
- Page 41 CHAPTER 6:PARTS REPLACEMENT 16) Install the new machine core in the reverse sequence of removal. 17) It should be noted that plastic gaskets are needed for the right-side roller of the new machine core and such materials can be obtained from the old core. 18) 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.
- Page 42 CHAPTER 6:PARTS REPLACEMENT 22） After the installation is completed, elevate the machine core to the upper limit and confirm that the sensor works normally, and adjust the metal plate properly to the center position (about 2 mm from both sides). 23）...
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Page 43: Master Control Panel
CHAPTER 6:PARTS REPLACEMENT 6.3 Master Control Panel 1) Disconnect all the cable ports. 2) Remove the fixing screws. 3) Remove the master control panel carefully(1000391515). -
Page 44: Footrest
CHAPTER 6:PARTS REPLACEMENT 6.4 Footrest To replace the leg massage portion you’ll need zip ties (medium and small size), something to cut zip ties, wrenches, screwdriver, and other misc. tools. 1) Remove the panel underneath the foot rest, to do this use the controller to elevate the leg-rest up.To remove the panel push in the center part of the buttons displayed below, this will pop them out and allow the panel to be removed. - Page 45 CHAPTER 6:PARTS REPLACEMENT 3) Once the cable is unplugged and the air-hoses are disconnected you’ll need to lower the leg-rest back down using the controller.Once the leg-rest is down we need to remove the seat from the massage chair, in order to do this we need to pull up on the seat from the back and pull forward. There are screws attaching the front of the seats upholstery to the frame, there are also air-hoses connected to the seat that should pull out as well.
- Page 46 CHAPTER 6:PARTS REPLACEMENT To remove the screws: 4) Remove the plastic side covers on each side of the leg-rest to access the connection points.The connection points will need to be removed with a wrench on the right side, and channel lock pliers on the left.The left side is connected with a pin that needs to be pulled.
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Page 47: Software Update
CHAPTER 6:PARTS REPLACEMENT 6.5 Software Update Prepare the flash drive and software • • J6800 software includes 2 parts (all *.BIN files): A. Manual controller application software jconsole.bin • • B. Lower control panel application software jfitness.bin It is recommended to install the software in the flash drive below 8GB to avoid that the •... -
Page 48: Machine Breakdown Drawing
CHAPTER 6:PARTS REPLACEMENT 6.6 Machine breakdown drawing... -
Page 49: Chapter 7:Parts List
CHAPTER 7:PARTS LIST Part list JHT No. Adaptor(transformer) 1000347562 MCB(master control board) 1000391515 Pushrod motor(chair) 1000347555 Pushrod motor(foot) 1000394189 Air pipe 1000408290 Air pump 1000392758 Air value 1000392761 Machine core 1000382973 Hand controller 1000405065 PCB board 1000228108 Stopper limit 1000373506 Control board sensor 1000306155 Foot rest...