Ogawa OG8020 Maintenance Service Manual Download Page 1

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Maintenance Service Manual

OG8020

Summary of Contents for OG8020

Page 1: ...Maintenance Service Manual OG8020 ...

Page 2: ...the shoulder massage 5 6 Guidance of disassemble the backrest frame 5 7 Guidance of disassemble the backrest cable 5 8 Guidance of disassemble the massage mechanism 5 9 Guidance of disassemble the 3D PCB 5 10 Guidance of disassemble the power amplifier PCB 5 11 Guidance of disassemble the fabric the air bag of backrest 5 12 Guidance of disassemble the PCB tray 5 13 Guidance of Disassemble the Main...

Page 3: ...isassemble 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: ...rts that are damaged and reuse the serviceable parts During the dismantling or assembling process do not damage other parts and PCB Be on the alert for loose or disconnected connectors during repair Do not leave any screws or other foreign objects in the unit after it is assembled Carry out test operation of the machine after the repair work is done It is preferable to perform the repair work on a...

Page 5: ... rolling motor counting sensor 2 Check whether rolling motor counting sensor is well connected 3 Change 3D PCB Turn on the chair it will check by itself 05 Some key is keep press for over 45 seconds 1 Some key on side board is get stuck 1 Change right side board Turn on the chair it will check by itself 06 Main PCB can t receive signals from footrest PCB 1 Footrest cable is not connect good 2 Foot...

Page 6: ... t receive narrow signal 1 Wideth inspection board is defective 2 The wire of wideth inspection board is broken or not well connected 3 3D PCB is defective 4 Kneading motor is dead or kneading motor belt is loosen 1 Change wideth inspection board 2 Change the wire of wideth inspection board 3 Change 3D PCB 4 fixing kneading belt when start automatic detection 11 Signals from wideth inspection boar...

Page 7: ...n 17 Signals from up down limit senaor is abnormal 1 Up down limit sensor is defective 2 Up Down limit sensor wire is disconnected 3 Rolling motor is dead or rolling motor wire is disconnected 1 Change up down limit sensor 2 Check whether up down limit sensor wire is connect good 3 Check whether rolling motor wire is connect good or change massage mechanism when start automatic detection 18 Signal...

Page 8: ...tection 27 3D limit sensor signal is abnormal 1 3D limit sensor is defective 2 The connecter of 3D limit sensor is disconnected 1 Change 3D limit sensor 2 Check 3D limit sensor connecter make sure it is well connected when start automatic detection 28 3D limit sensor signal is abnormal 1 3D limit sensor is defective 2 The wire which connect 3D limit sensor and 3D PCB is disconnected 3 3D motor is ...

Page 9: ...automatic detection 31 Footrest can t extend or retract or signal from footrest counting sensor is abnormal 1 Footrest motor is get stuck 2 Footrest counting sensor is loosen 3 Footrest counting sensor is defective 1 Reset the chair 2 Change footrest assembly When turn on the chair it will check by itself ...

Page 10: ...sing any key when starting and no response by pressing other keys Replace mechanical switch or it s wire Replace Stroke Photo electricity Replace the main PCB Width Inspection Board of PCB fails replace it 03 No Width switchover The terminals of Width Inspection on main PCB and wires are poorly connected The terminals of Width Inspection on massage mechanical and wires are poorly connected Width I...

Page 11: ... 08 No response when pressing the keys on the remote controller The terminals and wires are poorly connected The PCB in the remote controller fails Plug the terminal securely or replace the wires Replace the remote controller 09 Back rest cannot be reclined or raised The terminals of reclining actuator and wires are poorly connected The reclining actuator fails Main PCB fails Plug the terminal sec...

Page 12: ...ils Plug the terminal securely Replace the snuffle valves Replace the inflator pump Replace main PCB 13 No gas charging in the foot rest The terminal of the snuffle valves and wires are poorly connected The snuffle valves fail The inflator pump fails Main PCB fails Plug the terminal securely Replace the snuffle valves Replace the inflator pump Replace main PCB ...

Page 13: ...ls required Screwdriver size 1 2 3 Diagonal cutter and long nose pliers Soldering Kit Spanner tools Kit Test pen Allen Key set Ratchet Tools Set Blower Electric Driver electrical adhesive tape Cable Ties WIRE CONECTORS ...

Page 14: ...tach the backrest pad from backrest As pictured below C Locate the backrest cable connecter at rear of the chair Slacken the two screw bolts until you can pull them up Then disconnect the backrest cable connector As pictured below The pillow has been detached Unzip the zipper to the end Locate the backrest cable connecter Two screw bolts have been pull up Connecter has been disconnected Top pad of...

Page 15: ...from the backrest actuator As pictured below E Locate backrest air hose connecter Disconnect it G Hold the backrest vertically and pull it up then we can take off the backrest As pictured below Attention The backrest is heavy If possible ask somebody help you to take it off There is a hook at the bottom so make sure the backrest lay on its back to prevent damage the floor Pull the hook meanwhile p...

Page 16: ...emble 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 Pull the backrest up vertically ...

Page 17: ...ip 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 Then disconnect the air hose connector and wire connector and the side board can be removed As pictured below ...

Page 18: ... the end As pictured below C Remove the four screws which secure the arm massage Then the arm massage can be detached As pictured below D Locate the four screws which lock the armrest cover Remove these four screws first Then lift the cover up and the armrest cover can be detached There is one controller board and one charging board on the inner side of right armrest cover As pictured below Locate...

Page 19: ... the screws which lock the control board supportor then take them off Disconnect the connectors which connect to control board Remove the screws which lock control board Now the control board and key can be taken off As pictured below G Remove the four screws which lock the key Then the key can be taken off As pictured below Locate the screws which secure the control board supportor ...

Page 20: ... 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 Use a long screw driver to remove the four screws As pictured below D Detach the shoulder massage unit from the backrest Disconnect the air hose and wire connecter Now the shoulder massage can be taken off As pictured below Locate the four screws ...

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: ... massage C Remove the warranty seal Use screw driver to remove the four screws which secure backrest rear cover Then the rear cover of backrest can be taken off As pictures below F Locate the plastic plate at the side of lower backrest Use Phillips screwdriver remove the two screws Then take it off As pictured below Locate the warranty seal Locate the four hexagon screws Rear cover has been detach...

Page 23: ...ow G Use screw driver slacken and remove the screws which secure the backrest frame Then we can detach the backrest frame As pictures below Locate the connecters Get rid of the cable tie Locate the screws Disconnect the three connecters Backrest frame has been detached ...

Page 24: ...driver to remove the two screws which secure the 3D PCB box cover Use long nose pliers remove the screw nut which secure the grounding wire Use diagonal cutter to get rid of the cable ties which fasten the cable Then disconnect the connecters As pictured below D Use diagonal cutter to get rid of the cable ties which secure the wire Then disconnect the Screws have been removed Locate the three scre...

Page 25: ...ws and screw nut Then take off the wire clips As pictured below F Turn over the backrest frame and get rid of all the cable ties which are fasten the backrest wire Then we can take off the backrest wire As pictured below Locate the screws The wire has been disconnected Locate the three wire clips Locate the cable ties Backrest wire has been taken off ...

Page 26: ...ve the two screws which secure the 3D PCB box cover Use long nose pliers remove the screw nut which secure the grounding wire Use diagonal cutter to get rid of the cable ties which fasten the cable Then disconnect the connecters As pictured below D Use diagonal cutter to get rid of the cable ties which secure the wire Then disconnect the wire connecters As pictured below Screws have been removed L...

Page 27: ...backrest frame Then we can remove the rubber stopper As pictures below show F Use screw driver remove the four screws which secure the top bar of backrest frame Then remove the top bar Locate the rubber stopper Locate two of the four screws Top bar has been detached The wire has been disconnected Locate the screws ...

Page 28: ...lling 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 The black wire of DC adaptor connects to black wire of the connecter Locate the motor wire connecter Massage mechanism has been detached ...

Page 29: ... 3D PCB box Use Phillips screwdriver to remove them And the 3D PCB box is separate from massage mechanism As pictured below C With help of a diagonal cutter get rid of two cable ties which fasten the wire onto 3D PCB box cover Use Phillips screwdriver to take off the six screws which secure the 3D PCB box cover Then remove the 3D PCB box cover As pictured below Locate 3D PCB box Locate the warrant...

Page 30: ...B up then the 3D PCB unlocked Then the 3D PCB can be removed As pictured below show Locate the two cable ties Locate the six screws which secure the 3D PCB box cover 3D PCB box cover has been detached All the connectors have been disconnected Long nose pliers clamp the PCB support to 3D PCB has been detached ...

Page 31: ...e B Use screw driver remove the screws which secure the power amplifier base As pictured below C Disconnect all the connecters on the power amplifier Then use long nose pliers clamp PCB support meanwhile lift the PCB up Then the PCB unlock Then we can detach the power amplifier PCB As pictures below Locate the power amplifier Locate the screws ...

Page 32: ...ckrest frame 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 Then disconnect the air hose And then we can detach the air bag As pictures below show Locate backrest air bags Cut the cable tie Air hose has been disconnected Air bag has been detached ...

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: ... Tray Three of them are locked by screw bolts One is not locked As pictured below C Follow the steps below pictures below to remove connecters Locate the PCB Tray Locate the two screw bolts that secure the connecter Loosen these two screw bolts to unlock the connecter Disconnect the connecter Locate the backrest cable connecter Locate the other three connecters ...

Page 35: ...ve four screws which secure the PCB Tray Detach the PCB tray from the base All the four connecters have been removed Locate the 4pcs screws which secure the PCB tray The 4pcs screws have been removed PCB Tray has been detached ...

Page 36: ...ox cover B Remove all the connecters which connected to main PCB As pictured below C Use a Phillips to remove five screws which secure the PCB Then the main PCB can be removed D Remove all the connecters which connected to power PCB As pictured below PCB POWER PCB Bluetooth PCB Locate the four screws All the connecters have been disconnected Locate the screws that secure the PCB PCB has been detac...

Page 37: ...the connecters which connected to blue tooth PCB As pictured below G Use a Phillips to remove three screws which secure blue tooth PCB Then blue tooth PCB can be detached All the connecters have been disconnected Bluetooth PCB has been detached Locate the screws Locate the screws Power PCB has been detached ...

Page 38: ... connecters As pictured below D Use Phillips screwdriver to remove the two screws which secure the inflator pump box Then we can take it off As pictured below E Use a Phillips screwdriver to remove the ten screws which secure the inflator pump cover Then open it As pictured below Locate the wire connecter Locate the air hose connecters All the wire connecter and air hose connecters have been disco...

Page 39: ...he air valve can be removed As pictured below G Disconnect all the wire connecters Remove the screws which fixing the PCB Then the PCB can be taken off Locate the ten screws that secure the cover Cover has been removed Locate the screws which secure the air valve Air valve has been detached Connecters have been disconnected Air pump PCB has been detached ...

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: ...e the two hexagon screws that fixing the thigh massage unit As pictured below C Separate the Velcro and find the air hose connecter Disconnect the air hose and we can take off the thigh massage unit As pictured below Locate thigh massage unit Locate the hexagon screws Remove the hexagon screw Locate the air hose connecter The thigh massage unit has been detached ...

Page 42: ...driver slacken and remove the screws which secure the air bag Then disconnect the air hose And then the air bag can be taken off As pictured below Locate the Velcro Cover of thigh massage unit has been taken off Take off the screw and screw nut Disconnect the air hose The air bag has been taken off ...

Page 43: ...est B Remove the screw that fixing the wire harness Then find backrest pad wire connector and disconnect it As pictured below C Unzip the zipper between backrest bad and seat pad Then we can take it off As pictures below Locate the backrest pad heating wire The connecter has been disconnected Locate the zipper head ...

Page 44: ...rest cover As pictured below D Find seat pad vibration motor wire connector and disconnect it As pictured below E Follow the air hoses to find the connecter Then disconnect it Then we can detach the seat pad As pictured below Disconnect the air hose at here Disconnect the air hose at here Locate the vibration motor wire harness Connecter has been disconnected Locate the zipper head The zipper has ...

Page 45: ... zipper to the end As pictured below G Take the seat pad cover off Then we can see air bags and vibration motor As pictured below H Disconnect the air hose and we can detach the air bag As pictures below Locate the zipper head Locate air bags Locate the vibration motor Locate air hose connecter ...

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Ogawa OG8020, Maintenance Service Manual

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