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Ogawa OG8020 Maintenance Service Manual

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Maintenance Service Manual
OG8020

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Summary of Contents for Ogawa OG8020

  • Page 1 Maintenance Service Manual OG8020...
  • Page 2 Catalog 1: Precautions for inspection and repair 2: OG8020 massage chair auto-check list 3: Common Troubles and Maintenance Methods list 4: Tools List 5-1: Guidance of Disassemble the backrest 5-2: Guidance of Disassemble the tablet holder 5-3: Guidance of Disassemble the side board...
  • Page 3 5-17: Guidance of Disassemble the seat pad 5-18: Guidance of disassemble backrest actuator 5-19: Guidance of disassemble footrest actuator 5-20: Guidance of disassemble the Z-G actuator 5-21: Guidance of disassemble the lower side board and rear roller 5-22: Guidance of disassemble the footrest and footrest PCB 5-23: Guidance of disassemble air valves inside footrest 5-24: Guidance of replace the footrest extend assembly...
  • Page 4 1. Precautions for inspection and repair Inspection  Verify that the power cord is tightly connected on the machine.  Be careful to avoid electric shock. Repair  Power off the supply before repair work begins.  Keep things tidy and in order during repair work. ...
  • Page 5 OG8020 Massage Chair Auto-check List STEPS OF START Automatic detection: Service=>Technical support=>Automatic detection code Phenomenon Malfunction description Solutions Remarks 1.Check backrest cable 1.Backreat cable is not connecter. Make sure it Turn on the Main PCB can't well connected. is perfectly...
  • Page 6 1.Wideth inspection 1.Change wideth board is defective2.The inspection wire of wideth inspection board.2.Change the board is broken or not wire of wideth when start Can't receive wide disconnected inspection board automatic signal 3.3D PCB is 3.Change 3D PCB detection defective4.Kneading 4.Fixing kneading belt motor is dead or kneading or change massage...
  • Page 7 1.Change up&down limit 1.Up & down limit sensor sensor 3D PCB didn't is defective 2.Check whether receive signals 2.Up&Down limit sensor up&down limit sensor when start from up limit wire is disconnected wire is connect good automatic sensor within 40 3.Rolling motor is dead 3.Check whether detection...
  • Page 8 1.Change backrest 1.Backrest actuaor is actuator defective 2.Check whether Can't detect 2.Backrest actuator footrest actuator when start signals from motor wire is motor wire is well automatic backrest actuator disconnected connected detection counting sensor 3.Backrest actuator 3.Check whether counting sensor wire is footrest actuator disconnected counting sensor wire is...
  • Page 9 when start 3D limit sensor 1.3D limit sensor is 1.Change 3D limit automatic signal is abnormal defective sensor detection 1.Footrest motor is get stuck. 2.Footrest Footrest can't counting sensor is loosen When turn on extend or retract, 1.Reset the chair. 3.Footrest counting the chair.it or signal from...
  • Page 10 3: Common Troubles and Maintenance Methods are listed as following: Phenomenon Description Maintenance Methods The LCD isn’t illuminating: ① Replace Fuse. ①Fuse melts (in the Power Source Box or on ② Replace Power Box. No Function the transformer wire). ③ Replace main PCB. When Starting.
  • Page 11 ①Terminal or Wire Poorly Contacts. ①Plug the terminal securely or ②Down-stroke Photo-electricity replace the wires. ②Replace Down-Stroke Sub- Subassembly Fails. ③Up-stroke Photo-electricity assembly. No Rolling. ③Replace Up-Stroke Sub- Subassembly Fails. ④Rolling Motor Fails. assembly. ⑤Main PCB Fails. ④Replace Rolling Motor. ⑤Replace main PCB.
  • Page 12 ①The terminal of the snuffle valves and ①Plug the terminal securely. ②Replace the snuffle valves. wires are poorly connected. No gas charging ②The snuffle valves fail. ③Replace the inflator pump. in the seat-pad. ③The inflator pump fails. ④Replace main PCB. ④Main PCB fails.
  • Page 13 Tools List Tools required Screwdriver size Diagonal cutter Soldering Spanner tools Kit 1,2,3 long nose pliers Test pen Allen Key set Ratchet Tools Set Blower electrical adhesive Electric Driver Cable Ties WIRE CONECTORS tape...
  • Page 14 5-1: Guidance of Disassemble the backrest A: Locate the zipper between the top pillow and backrest. Unzip it to the end and remove the pillow. (As pictures below) The pillow has been Unzip the zipper to the end. detached. B: Turn over the top pad of backrest. Locate the zipper between backrest pad and backrest. Unzip it and detach the backrest pad from backrest.
  • Page 15 D: There is a hook at the bottom of the backrest. Pull the hook up meanwhile push the backrest forward. Lay the backrest above the seat pad assy. ( As pictured below) Pull hook, meanwhile push the backrest forward D: Use long nose pliers get rid of the cotter pin and the bolt. Now the backrest has been separated from the backrest actuator.
  • Page 16 Pull the backrest up vertically 5-2: Guidance of disassemble the tablet holder A: Take off the tablet cover first. Then remove the screw bolt which locks the tablet holder. (As pictured below) B: Slide the tablet holder to take it off. As pictured below.
  • Page 17 5-3: Guidance of disassemble the side board. A: Locate the two zipper heads at the bottom of side board. Completely unzip the zipper. Then lift the cover. (As pictured below) B: Locate the two screws which lock the side board. Remove these two screws with Allen key. (As pictured below) 3: Pull the side board up to detach from the base.
  • Page 18 5-4: Guidance of disassemble arm massage assembly and the keys on side board A: Take off the right sideboard. (Refer to 5-3: Guidance of disassemble the side board ) B: Locate zipper head of arm massage. Unzip the zipper to the end. (As pictured below) C: Remove the four screws which secure the arm massage.
  • Page 19 E: Disconnect the two connectors which connect to charging board. Remove the four screws which lock the charging board. Then the charging board can be taken off. (As pictured below) F: Remove the screws which lock the control board supportor then take them off. Disconnect the connectors which connect to control board.
  • Page 20 5-5: Guidance of disassemble the shoulder massage A: Take off the side board first. (Refer to 5-3: Guidance of disassemble the side board. ) B: Push the shoulder massage to the narrow position then release it. And the shoulder massage will open to the wide position. (As pictured below) C: Locate the four screws which lock the shoulder massage.
  • Page 21 E: Locate the shoulder massage wide adjustor. It is locked by six screws. Remove these screws and the wide adjustor can be taken off. (As pictured below)
  • Page 22 5-6: Guidance of disassemble the backrest frame A: Take off the backrest and lay it on the floor. (Refer to 5-1: Guidance of disassemble the backrest) B: Take off the shoulder massage unit and the shoulder massage wide adjustor. (Refer to 5-5: Guidance of disassemble the shoulder massage) C: Remove the warranty seal.
  • Page 23 F: Disconnect the wire connecters of amplifier board. (As pictured below) Locate the connecters Get rid of the cable tie. Disconnect three connecters. G: Use screw driver slacken and remove the screws which secure the backrest frame. Then we can detach the backrest frame. (As pictures below) Backrest frame has been Locate the screws detached.
  • Page 24 5-7: Guidance of disassemble the backrest cable A: Detach the backrest frame. (Refer to 5-6: Guidance of disassemble the backrest frame ) B: Use Phillips screwdriver to remove the three screws which secure the 3D PCB box onto the backrest frame. (As pictures below) Locate the three screws.
  • Page 25 wire connecters. (As pictured below) The wire has been disconnected. Locate the screws E: Locate the three wire clips which fixing the wires. Use Philips screwdriver and long nose pliers to remove the screws and screw nut. Then take off the wire clips. (As pictured below) Locate the three wire clips.
  • Page 26 5-8: Guidance of disassemble the massage mechanism A: Detach the backrest frame. (Refer to 5-6: Guidance of disassemble the backrest frame ) B: Use Phillips screwdriver to remove the three screws which secure the 3D PCB box onto the massage mechanism. (As pictured below.) Locate the three screws.
  • Page 27 The wire has been disconnected. Locate the screws E: Use screw driver and long nose pliers remove the screws and screw nuts which secure the rubber stopper onto the backrest frame. Then we can remove the rubber stopper. ( As pictures below show ) Locate the rubber stopper F: Use screw driver remove the four screws which secure the top bar of backrest frame.
  • Page 28 G: Disconnect the motor wire connecter from 3D PCB. Use DC24V power adaptor to drive the rolling motor. Then we can drive the massage mechanism out of the racks. (As pictured below) The red wire of DC adaptor connects to brown wire of the connecter.
  • Page 29 5-9: Guidance of disassemble the 3D PCB. A: Remove the warranty seal. Use Phillips screw driver to remove the four screws. Then remove the rear cover of backrest. Then we can find 3D PCB box at the bottom of massage mechanism.( As pictured below) Locate the warranty seal Locate...
  • Page 30 Locate the two cable ties. Locate the six screws which secure the 3D PCB box cover. 3D PCB box cover has been detached. D: Disconnect all the connecters first. Use long nose pliers clamp the 3D PCB support, meanwhile lift the 3D PCB up, then the 3D PCB unlocked. Then the 3D PCB can be removed.( As pictured below show ) All the connectors have Long nose pliers clamp...
  • Page 31 5-10: Guidance of disassemble the power amplifier PCB A: Detach the front cover of backrest. (Refer to 5-6: Guidance of disassemble the backrest frame) B: Use screw driver remove the screws which secure the power amplifier base. (As pictured below) Locate the power amplifier Locate the screws C: Disconnect all the connecters on the power amplifier.
  • Page 32 5-11: Guidance of disassemble the fabric & the air bag of backrest A: Detach the front cover of backrest. (Refer to 5-6:Guidance of disassemble the backrest frame ) Locate backrest air bags B: Unzip the zipper of backrest air bag to the end. ( As pictures below show ) C: Use diagonal cutter get ride of the cable tie which secure the air hose.
  • Page 33 D: Unzip the zipper of backrest fabric to the end. Then we can detach the fabric. ( As pictures below show ) The fabric has been detached.
  • Page 34 5-12: Guidance of disassemble the PCB tray. A: Disconnect the power cord first. Locate the main PCB tray at the rear of the chair. Locate the PCB Tray. B: There are 4 cables connect to PCB Tray. Three of them are locked by screw bolts. One is not locked.
  • Page 35 All the four connecters have been removed. D: Use a Phillips to remove four screws which secure the PCB Tray. Detach the PCB tray from the base. Locate the 4pcs screws which secure the PCB tray. The 4pcs screws have been removed. PCB Tray has been detached.
  • Page 36 5-13: Guidance of disassemble PCB, Power PCB & Bluetooth PCB A: Take off the PCB tray. (Refer to 5-12: Guidance of disassemble the PCB tray) B: Use a Phillips screwdriver to remove four screws and open the PCB box cover. Locate the four screws.
  • Page 37 All the connecters have been disconnected. E: Use a Phillips to remove four screws which secure the PCB. Then the main PCB can be removed. Locate the screws. Locate the screws. Power PCB has been detached. F: Remove all the connecters which connected to blue tooth PCB. (As pictured below) G: Use a Phillips to remove three screws which secure blue tooth PCB.
  • Page 38 5-14: Guidance of disassemble Inflator pump box A: Take off the backrest. (Refer to 5-1: Guidance of disassemble the backrest) B: Take off the main PCB tray. (Refer to 5-12: Guidance of disassemble the PCB tray.) C: Disconnect the wire connecter which connected to inflator pump box. Then disconnect the air hose connecters.
  • Page 39 Locate the ten screws that secure the Cover has been removed. cover. F: Remove the air hose which connected to air valve. Disconnect the wire connecter from the PCB. Then remove the four screws which fixing the air valve. Now the air valve can be removed.
  • Page 40 H: Locate the four screws at the bottom of the inflator pump plate. Remove these four screws and the air pump can be removed. (As pictured below) Locate the four screws. Air pump has been taken off.
  • Page 41 5-15: Guidance of disassemble the thigh massage unit A: Take off the side board. ( Refer to 5-3: Guidance of disassemble the side board ) Locate thigh massage unit B: Use Allen key slacken and remove the two hexagon screws that fixing the thigh massage unit. ( As pictured below) Locate the hexagon screws Remove the hexagon screw...
  • Page 42 D: Separate the Velcro and take off the cover of thigh massage unit. ( As pictured below) Locate the Velcro. Cover of thigh massage unit has been taken off. E: Use screw driver slacken and remove the screws which secure the air bag. Then disconnect the air hose.
  • Page 43 5-16: Guidance of disassemble the backrest pad. A: Detach the backrest. (Refer to 5-1: Guidance of disassemble the backrest) B: Remove the screw that fixing the wire harness. Then find backrest pad wire connector and disconnect it. (As pictured below) Locate the backrest pad heating wire The connecter has been disconnected C: Unzip the zipper between backrest bad and seat pad.
  • Page 44 5-17: Guidance of disassemble the seat pad A: Detach the backrest. (Refer to 5-1: Guidance of disassemble the backrest) B: Detach the backrest pad. (Refer to 5-16: Guidance of disassemble the backrest pad.) C: Unzip the zipper between seat pad and footrest cover. (As pictured below) Locate the zipper head.
  • Page 45 F: Use diagonal cutter get ride of the cable tie which secures the zipper heads. Then unzip the zipper to the end. (As pictured below) Locate the zipper head G: Take the seat pad cover off. Then we can see air bags and vibration motor. (As pictured below) Locate the vibration motor Locate air bags...

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