Cozzia BK-750 Maintenance Service Manual
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Cozzia BK-750 Maintenance Service Manual

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Maintenance Service Manual
BK-750
Model
:
BY COZZIA SERVICE DEPARTMENT

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Summary of Contents for Cozzia BK-750

  • Page 1 Maintenance Service Manual BK-750 Model BY COZZIA SERVICE DEPARTMENT...

  • Page 2: Table Of Contents

    Catalog 1. Tools List............................2 2.1. Guidance of disassemble the Backrest Assy.................3 2.2. Guidance of disassemble the ootrest assembly................4 2.3 Guidance of Disassemble the footrest PCB..................6 2.4 Guidance of disassemble the Rear cover of Backrest..............7 2.5 Guidance of Disassemble the Rear cover of Headrest..............7 2.6 Guidance of Disassemble the Bluetooth PCB.................8 2.7 Guidance of Disassemble the Side board..................9 2.8 Guidance of Disassemble the Remote control................11...

  • Page 3: Tools List

    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 4: Guidance Of Disassemble The Backrest Assy

    2.1 Guidance of Disassemble the Backrest Assy A: Locate the zipper between the pillow and backrest pad,unzip the zipper to the end.Then the pillow can be take off. Locate the zipper B: Locate the zipper between the backrest pad and backrest.Unzip the zipper to the end.Then detach the backrest pad forwards from the backrest .Unzip the zipper that on the both side of backrest.

  • Page 5: Guidance Of Disassemble The Footrest Assembly

    Locate the zipper between seat pad and footrest cushion .unzip the zipper to the end.Then locate the zipper in front of seat pad,unzip the zipper to the end The backrest pad can be take away Locate the zipper Locate the zipper on both sides of seat pad ,unzip the zipper to the end.Then the backrest Assy can be take off.
  • Page 6 B:Locate the two cotter pins that fix on the seat and footrest ,then take off them. Locate the two cotter pins C: Move backward the footrest we can find the another cotter pin that fixing the footrest.Remove the cotter pin and disconnect the air hose connector wire with harness connector.Then the footrest can be take away.

  • Page 7: Guidance Of Disassemble The Footrest Pcb

    2.3 Guidance of Disassemble the footrest PCB Take off the Footrest assembly(Refer to Guidance of Disassemble the Footrest assembly) Locate the eight screws that fixing the rear cover of the footrest assembly and use screwdriver slacken and remove these screws. C:Locate the four screws that fixing the PCB box cover and remove them,we can find the footrest PCB.

  • Page 8: Guidance Of Disassemble The Rear Cover Of Backrest

    2.4 Guidance of Disassemble the Rear cover of Backrest Take off the outer cover of side board on both sides that you should just pull it of,no screws. ( As pictures below show) Pull here like this :Locate the four screws on the rear cover backrest Use screwdriver remove these screws Then we can detach the rear cover.

  • Page 9: Guidance Of Disassemble The Bluetooth Pcb

    isconnect the Light belt connector .Then detach the Side board decorative parts the same as detach the Side board outer cover,just pull it of and the decorative parts can be take off. (Attention:Be careful to do not damage the decorative parts) Pull of here more easy After remove decorative parts on both sides,we can take off the headrest cover .

  • Page 10: Guidance Of Disassemble The Side Board

    Locate the Bluetooth PCB inside of backrest .Then disconnect the wire connector on the Bluetooth PCB and take off the four screws which fixing the Bluetooth PCB.Then the Bluetooth PCB can be take off. disconnect the connector 2.7 Guidance of Disassemble the Side board Take off the rear cover of backrest(refer to Guidance of Disassemble the Rear cover of Backrest) Take off the rear cover of Headrest(refer to Guidance of Disassemble the Rear cover of Headrest) Locate the three screws that fixing speaker and remove them.Disconnect the speaker connector from the...
  • Page 11 Locate the four hexagon that fixing side board on the frame and remove them.Then locate and remove the other six screws that secure the side panel on the rear headrest cover hexagon Locate the four Locate the Six screws Disconnect the air hose connector and unplug the wire connector. Lift the side board upwards then we can take off the side board.

  • Page 12: Guidance Of Disassemble The Remote Control

    2.8 Guidance of Disassemble the Remote control Take off the left side board.(Refer to Guidance of Disassemble the Side board Track the remote control wire find the wire clip on the frame.Use screw driver remove the screw which secure the wire clip.Slacken and remove the wire connector cap and take off the remote control. 2.9 Guidance of Disassemble the emote control bracket Wireless charge...
  • Page 13 Pry outward with minus screwdriver and lift upward,then we can take off the armrest. ( As pictures below show) (Attention:Be careful ,the armrest easy to deform) Pry the armrest gentle Remove the screw and we can take off the remote control bracket. Slacken and remove it Locate the four screws and remove them,we can take off the Wireless charge .

  • Page 14: Guidance Of Disassemble The Side Board Controller Pcb

    2.10 Guidance of Disassemble the side board controller PCB Take off the right side board outer cover and decorative parts(Refer to Guidance of Disassemble the Rear cover of Headrest Locate the screws that fixing the right armrest and remove it.Then take off the right armrest and disconnect the connector on the side controller PCB.(Refer to Guidance of Disassemble the emote control bracket...

  • Page 15: Guidance Of Disassemble The Shoulder Massage Assembly/Seat Side Massage Assembly

    2.11 Guidance of Disassemble the shoulder massage assembly/Seat side massage assembly Take off the side board(Refer to Guidance of Disassemble the side board ) isconnect the air hose connector of shoulder massage.Then unzip the zipper of shoulder massage cover to end. C: L ocate the four screws that fixing the shoulder massage and remove them.Then the shoulder massage assembly can be take off.

  • Page 16: Guidance Of Disassemble The Main Pcb/Power Pcb/Wifi Pcb/Bluetooth Audio Pcb

    2.12 Guidance of Disassemble the Main PCB/Power PCB/WIFI PCB/Bluetooth Audio PCB Locate the six screws that fixing the PCB box cover.Use screw driver slacken and remove the screws then take off the main PCB box cover. screws There are two on the inside Locate the main PCB on the PCB tray.Disconnect all the wire connectors that connected to it.Then slacken and remove the screws that fixing the main PCB, then the main PCB can be take off.

  • Page 17: Guidance Of Disassemble The Massage Mechanism

    Locate the WIFI PCB on the PCB tray.Disconnect all the wire connectors that connected to it.Then remove the screws that fixing the WIFI PCB,then the WIFI PCB can be take off. Locate the screws and connector Locate the Bluetooth Audio PCB on the PCB tray.Disconnect all the wire connectors that connected to it.Then remove the screws that fixing the Bluetooth Audio PCB,then the Bluetooth Audio PCB can be take off.
  • Page 18 Locate the screws that fixing rear cover of massage mechanism and Back stringing.Use screwdriver slacken and remove these screws then we can take off the rear cover of massage mechanism. Use the diagonal cutter get ride of the cable ties which fasten the Back stringing.Then disconnect the connector which the Back stringing on the PCB.

  • Page 19: Guidance Of Disassemble The Back Stringing

    Locate the red rolling motor wire connector and disconnect it.Use DC12~24V power supply connect to connector to drive the mechanism out of the rack .Then the massage mechanism can be detach. Back stringing 2.14 Guidance of Disassemble the isconnect the connector which the Back stringing on the massage mechanism PCB.(Refer to Guidance of Disassemble the massage mechanism) ocate and remove the screws that fixing Back stringing on the frame.Then Use the diagonal cutter get ride of the cable ties which fasten the Back stringing on the frame.

  • Page 20: Guidance Of Disassemble The Footrest Actuator

    2.15 Guidance of Disassemble the Footrest actuator Take off the footrest first(Refer to Guidance of Disassemble the footrest assembly ). Take off the backrest Rear cover(Refer to Rear cover of backrest) Guidance of Disassemble the Locate the four screws on the front baffle .Take off the screws that fixing the front baffle and take off the front baffle Locate the screws Use the diagonal cutter get ride of the cable ties which fasten actuator wires to the frame.Then tack the...

  • Page 21: Guidance Of Disassemble The Zero Gravity Actuator

    2.16 Guidance of Disassemble the zero gravity actuator Take off the footrest first(Refer to front cover. Guidance of Disassemble the footrest assembly )and the Take off the backrest Rear cover(Refer to Rear cover of backrest) Guidance of Disassemble the B: Locate the zero gravity actuator.Use the diagonal cutter get ride of the cable ties which fasten actuator wires to the frame.Then tack the zero gravity actuator wire harness to locate the wire connector.Then disconnect them.

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