EASEPAL EC-380B Manual

1
中国·厦门蒙发利科技有限公司
Xiamen Comfort Science & Technology Co.,Ltd
EC-380B Maintenance Service Manual
MODEL：EC-380B
Voltage specification：220-240V
By Customer Service Department

2
Table of Contents
I……Specifications ……………………………………………………….3
II.…..Appearance of the chair …………………………………………….4
III…. Name and functions of components (remote controller) …………...5
IV…..Malfunction catalog………………………………………………6~8
V……Troubleshooting flow chart……………………………………..9~13
VI……Maintenance of the back rest …………………………………14~19
VII…..Maintenance of the seat part ………………………………….20~24
VIII….Maintenance of the footrest …………………………………..25~28
IX……The project of spare part shipment……………………………29
Model EC-380B

3
I. Specifications

4
II. Appearance of the chair
Backrest
Pillow
Controller
Backrest Pad
Arm massage
Hip massage
Seatpart
Shoulder massage
Wheel
Side panel Footrest

5
III.Name and functions of components (remote controller)
Main control buttons
Auto-program buttons
Angle adjustment button
Length auto adjustment
buttons for legrest
Manual back
massage programs
The adjustment button
for back body
Remote controller
LCD
Sensor receiver
Back speed/Air
intensity

6
IV. Malfunction catalog
Common Troubles and Maintenance Methods are listed as following:
Serial
NO. Phenomenon Description Maintenance Methods Refer to
01 No Function
When Starting.
The LCD isn’t illuminating:
①Fuse(s) burn out ( the one
Is in the Power Source Box and
the other one on the main PCB).
②Power supply circuit poorly
connected.
③EMC Board fails.
④main PCB fails.
①Replace Fuse(s).
②Replace the power supply
cord.
③Replace EMC Board.
④Replace main PCB.
①Page 24/20
②(Ellipsis)
③&④
Page 23/18
02 No function
when starting.
The LCD is illuminating：
①The Up or Down Stroke
Photo-electricity fails.
Main PCB fails.
②Kneading is on without
pressing any key when
starting and no response
by pressing other keys.
①Replace the Up or Down
Stroke Photo-electricity.
②Replace the main PCB.
③Width Inspection Board of
PCB fails, replace it.
①Page 19/8
②Page 23/18
③Page 18/7.1
03 No Width
switchover.
①The terminals of Width
Inspection on main PCB
and wires are poorly
connected.
②The terminals of Width
Inspection on massage
mechanical and wires are
poorly connected.
③Width Inspection fails.
④Main PCB fails.
①&②Plug the terminal
securely or replace the wires.
③Replace Width Inspection.
④Replace the main PCB.
①&②&③
Page 18/7.1
④Page 23/18

7
04 No Rolling.
①Terminal or Wire Poorly
Contacts.
②Down-stroke Photo-
Electricity Subassembly Fails.
③Up-stroke Photo-electricity
Subassembly Fails.
④Rolling Motor Fails.
⑤Main PCB Fails.
①Plug the terminal securely
or replace the wires.
②Replace Down-Stroke
Subassembly.
③Replace Up-Stroke Sub-
assembly.
④Replace Rolling Motor.
⑤Replace main PCB.
①Page 23/18
②&③
Page 19/8
④Page 17/6.2
⑤Page 23/18
05
No kneading.
①The terminals on main PCB
and wires are poorly
connected.
②Kneading motor fails.
③Main PCB fails.
①Plug the terminal securely
or replace the wires.
②Replace the kneading
motor.
③Replace main PCB.
①&③
Page 23/18
②Page 16/6.1
06 No tapping.
①The terminals on main
PCB and wires are poorly
connected.
②Tapping motor fails.
③Main PCB fails.
①Plug the terminal securely.
②Replace the tapping motor.
③Replace main PCB.
①&③
Page 23/18
②Page 17~18
/6.3
07
No response
when pressing
the keys on the
remote
controller.
①The terminals and wires are
poorly connected.
②The PCB in the remote
controller fails.
①Plug the terminal securely
or replace the wires.
②Replace the remote
controller.
①Page 20/11
②Page 20/10
08
Back rest cannot
be reclined or
raised
①The terminals of reclining
actuator and wires are poorly
connected.
②The reclining actuator fails.
③Main PCB fails.
①Plug the terminal securely.
②Replace reclining actuator.
③Replace main PCB.
①&②Page
21~22/
15
③Page 23/18

8
09
Foot rest cannot
be raised or
lowered.
①The terminals of foot rest
actuator and wires are
poorly connected.
②The foot rest actuator fails.
③Main PCB fails.
①Plug the terminal securely.
②Replace foot rest actuator.
③Replace main PCB.
①&②Page
22/16
③Page 23/18
10 No gas charging
in the seat-pad.
①The terminal of the snuffle
valves and wires are poorly
connected.
②The snuffle valves fail.
③The inflator pump fails.
④Main PCB fails.
①Plug the terminal securely.
②Replace the snuffle valves.
③Replace the inflator pump.
④Replace main PCB.
①&②&③
Page24/19
④Page 23/18
11 No gas charging
in the foot rest.
①The terminal of the snuffle
valves and wires are poorly
connected.
②The snuffle valves fail.
③The inflator pump fails.
④Main PCB fails.
①Plug the terminal securely.
②Replace the snuffle valves.
③Replace the inflator pump.
④Replace main PCB.
①&②&③
Page24/19
④Page 23/18
12
No gas charging
in the veil
for backrest
①The terminal of the snuffle
valves and wires are poorly
connected
②The snuffle valves fail
③The inflator pump fails
④Main PCB fails
①Plug the terminal well
②Replace the snuffle valves
③Replace the inflator pump
④Replace main PCB
①&②&③
Page24/19
④Page 23/18
13
No extending
Or shrinking
of the calves-rest
①The terminals and wires are
poorly connected
②The output voltage is not
24VAC
③The limit sensor fail
④Motor fails
①Plug the terminal well
②Replace the main PCB
③Replace the limit sensor
④Replace the motor
①Page 25/22
②Page 23/18
③Page 26/24
④Page 25~26
/23

9
V. Troubleshooting flow chart
Notes for repairing chair or replacing parts:
①Make sure the power is OFF before tearing down the wires, moving terminals or replacing parts.
②Semiconductors (such as IC and others) are very easy to be damaged by static, so when you touch
the PCB, please make sure your body is grounding (by wearing a girding static ring), or your hands are
touching with earthing grip (household electrical appliances putting to earth, such as fridges, washers
and so on) to release all static of the body.
1. No function when starting.
N Y
Y N
Y
否
是N
N
Y
Y Y
N
N
N
Y
否
N
Is the LCD
illuminating? Is the fuse melted? Replace fuse.
(Page 24/20)
Are the terminals of Up
and Down Stroke
Subassembly connected
securely?
Is the power cord
open-circuit?
The switches of Up and Down
Stroke Subassembly fail or not?
The EMC Board
fails or not?
Replace the power
supply cord.
Replace it.
(Page 23/18)
Connect
securely.
Replace them.
(Page 19/8)
Is kneading on without pressing any
key when starting?
Width Inspection
Board fails or not?
Replace main PCB.
(Page 23/18)
Replace Width
Inspection Board.
(Page 18/7.1)

10
2. No width switchover.
N
Y
Y
N
3. No function（fixed-spot or partial）
N
Y
4. No rolling
N
YY
NY
NY
N
Are the terminals of Width Inspection Board and main
PCB connected securely? Connect securely.
Width Inspection Board fails or not? Replace it.
(Page 18/7.1)
Replace main PCB.
(Page 23/18)
Are the terminals of main PCB connected
securely?
Connect securely.
Replace Main PCB.
(Page 23/18)
Are the terminals of rolling motor wire and
main PCB connected securely? Connect securely
Rolling motor fails or not
Replace the motor
(Page 17/6.2)
Up stroke Photo-electricity subassembly fails or not Replace it
(Page 19/8)
Down stroke Photo-electricity subassembly fails or not Replace it
(Page 19/8)
Replace main PCB
(Page 23/18)

11
5. No kneading
N
Y
Y
N
Y
N
6. No tapping.
N
Y
Y
N
7. Remote controller doesn’t work.
N
Y Y
N
Are the terminals of kneading motor wire and main
PCB connected securely? Connect securely.
Kneading motor fails or not?
Width Inspection Board fails or not?
Replace main PCB.
(Page 23/18)
Replace the motor.
(Page 16/6.1)
Replace it.
(Page 18/7.1)
Are the terminals of tapping motor wire and main
PCB connected securely? Connect securely.
Tapping motor fails or not? Replace the motor.
(Page 17~18/6.3)
Replace main PCB.
(Page 23/18)
Are the terminals of remote controller wire and
main PCB connected securely? Connect securely.
The conductive rubber fails or not? Replace it.
(Page 20/11)
Replace the remote controller.
(Page 20/10)

12
8. Actuator doesn’t work.
N N
Y Y
Y Y
N N
9. No gas charging.
N N
Y Y
Y Y
N N
N N
Y Y
YY
N N
Are the terminals of
reclining actuator and main
PCB connected securely?
Connect
securely.
Are the terminals of foot rest
actuator and main PCB
connected securely?
Connect
securely.
The reclining actuator
fails or not? Replace it.
(Page 21~22/15)
The foot rest actuator
fails or not?
Replace it.
(Page 22/16)
Replace main PCB.
(Page 23/18)
Are the terminals of snuffle
valve for bags in the seat
pad and main PCB
connected securely?
Snuffle valve fails
or not?
Are the terminals of snuffle
valve for bags in the Foot
Rest and main PCB
connected securely?
Snuffle valve fails or not?
Connect
securely. Connect
securely.
Are the terminals of
inflator pump and main
PCB connected securely?
Replace it.
(Page24/19) Replace it.
(Page24/19)
Replace it.
(Page26/19)
Replace it.
(Page24/19)
Are the terminals of inflator
pump and main PCB connected
securely?
Connect
securely.
Connect
securely.
Inflator pump fails or not? Inflator pump fails or not?
Replace main PCB.
(Page 23/18)

13
10. No gas charging in the outer coating of backrest
N
Y
Y
N
N
Y
Y
N
12. No extending or shrinking of the calves-rest
N
Y
N
Y
Y
N
N
Y
N
Common trouble about electric control and processing methods of VT-380 are mentioned above. It is
for indication only.
The terminal of snuffle valves connected
well or not?
The snuffle valves fail or not?
Plug terminals well
The terminal of the inflator pump
connected well or not?
Replace the snuffle valves
(Page24/19)
Plug terminals well
Replace main PCB
(Page 23/18)
Replace the inflator pump
(Page24/19)
The inflator pump fails or not?
The terminal of the calves-rest
connected well or not?
The wire with terminal connected
well or not?
Plug terminals well
The limit sensor fail or not?
Plug the wire with terminals well
Replace main PCB
(Page 23/18)
Replace the limit sensor
(Page 26/24)
The terminal of the motor connected
well or not? Plug terminals well
Motor of the calves-rest fails Replace the motor
(Page 25~26/23)
Y

14
VI. Maintenance of the back rest
1. Disassembly and replacement of back pad
①Find the zipper on the top of the back rest. Unzip it, then the back pad can be removed.
②There are two air hoses at the bottom of the back pad, pull out the connectors if a replacement needed.
③There is a zipper at the bottom of the back pad. Unzip it and lift the sponge, then you can see the air
bags there.
④Pull out the connectors of the hoses, then you can replace the air bag(s) if needed.
2. Disassembly and replacement of the backrest
If the complete backrest is broken and need to be replaced, please consult the steps as below.
①Find the “stopper” under the backrest and press it , then you can fold backrest on seat part
②Find the wire plugs and pull out them.
③Unattach the connecting rod and the U stay fork of the reclining actuator with a flat head rivet, and pull
out the split pin.
④Lift the backrest at 90 degrees, then take it away from the chair.
The hoses of the back pad
Pull out the hoses
The zipper on the top of the backrest
The zipper at the bottom of the backrest
Note: Insert the wire plugs back
black to black and gray to gray,
otherwise damage to the chair
may result

15
3. Replacement of cloth of the front cover
①Unfasten the zipper of the back pad, and lay the back pad on the seat pad.
②You can find the zipper of the cloth at the left side. Unzip it and replace the cloth if needed.
4. Disassembly and replacement of the rear cover
If you find any cracks on the rear cover, you can proceed as follow:
①Unfasten the zippers of the outer cloth of the rear cover.
②Find 4 pieces of screws fixing the rear cover.
③Remove the screws with a plus screwdriver.
④Then the rear cover can be removed.
⑤If it’s damaged, a new one should be replaced.
Attention: Take care not to damage the rear cover to
avoid bad external appearance. Proceed in the reverse
order of disassembly when assembling the rear cover.
Tool: a plus screwdriver
5. Disassembly and replacement of the front cover of the back rest
If you find any cracks on the front cover or any rips in the inside cloth, you can proceed as follow:
①After disassemble the rear cover, you can find 6 pieces of screws fastening the front cover to back frame.
②Remove the screws with a plus screwdriver, then the front cover can be removed.
③Proceed in the reverse order of above operation if replacement needed.
Lay the back pad on the seat part Unfasten the zipper zip
Screws securing the rear cover
A. Connecting rod (on the backrest)
B. U stay fork of reclining actuator (on the seat)
C. Flat head rivet
D. Split pin
Lift the backrest
at 90 degrees.

16
Attention: There are blocks between the front cover and back frame.
Tool: a plus screwdriver
6. Replacement of the kneading, tapping and rolling motors
Attention: The voltage of this massage chair is high and the motors are rotating in high speed, so make
sure the power is OFF before disassembly. For safety, you should remove plug from outlet.
6.1 Kneading motor（DC -24V）
①Disassemble the rear cover of the back rest,
and find the belt at top of the massage mechanism,
then loosen the belt.
②Find the wire of kneading motor, and cut
the cable ties tightening the wire with wire cutters.
③Remove the close-end wire connectors covering the wires with
nipper pliers, then disconnect the wires.
④Find 4 pieces of screws fixing the kneading motor to the sheet-metal,
remove the screws with a plus screwdriver.
⑤Replace a new one if it does work.
⑥Proceed in the reverse order of disassembly when replacing a new one.
Note：You should adjust the position of the small belt wheel, so the small and big belt wheels are in the
same plane to prolong the life-span of the belt.
Kneading motor
Cut the cable ties and remove
close-end wire connector Tools
Screws fastening the front
cover to the back frame (6
PCS)

17
6.2 Rolling motor（DC -24V）
①Disassemble the rear cover of the back rest, find the massage mechanism.
②Find the rail on the top of backrest and remove the screws to disassemble it.
③Disassemble the massage mechanism from the chair.（refer to 7.2）
④Remove rolling car take from rack rail, there are 2 ways to choose, but “a” is
more convenient than “b”.
a) Make the rolling motor power on, then revolve it until the rolling car take from backrest.
b) Use tools turn around axletree to revolve until the rolling car take from backrest.
⑤Find 5 pieces of screws fixing the Rolling motor to the sheet-metal, remove the screws with a plus
screwdriver.
⑥Replace a new one if it does work.
6.3 Tapping motor（DC -24V）：
①Disassemble the rear cover, then find the tapping motor.
②Cut the cable ties securing the wire on the sheet-metal of EMC.
③Remove the close-end wire connectors of the tapping motor
wires, then disconnect them.
④Loosen the belt of tapping motor, then remove the screws
securing the tapping motor.
Tapping motor
Screws securing the rolling motor (3 pcs)
Remove the screws
(2pcs)
Turn around axletree to
revolve until the rolling
car take from backrest.
Rolling motor
Screws (5pcs) securing the Rolling motor

18
⑤Then the tapping motor can be removed and replaced.
⑥Proceed in the reverse order of disassembly when assembly.
7. Maintenance of the massage mechanism
7.1Replacement of the Width Inspection Board
Note：①If the massage mechanism is just kneading but no tapping or rolling, or it doesn’t work when power
is on, and the main PCB is ok, in this we can think of that the Width Inspection Board fails.
②It’s not necessary to disassemble the massage mechanism when replacing the Width Inspection Board,
just disassemble the front and rear cover of the back rest.
①Disassemble the front and rear cover of the back rest as it is mentioned above.
②Pull out the terminal on the board and cut the cable ties fixing the wires.
③Remove the screws securing the board, then a new one can be replaced.
④Proceed in the reverse order of disassembly when assembly.
Tools: a plus screwdriver, wire cutters
7.2 Disassembly and replacement of the massage mechanism
Note: If the swinging arms are broken or it is too noisy, you can try to do something to the massage
mechanism. You should disassemble the rear cover and the cloth of the back rest.
①Disassemble the rear cover of back rest, remove the back pad, and disassemble the cloth of the back
rest, cut all the cable ties tightening the wires.
②Remove the close-end wire connectors of tapping motor wires, then disconnect the wires.
③Pull out the terminals of the Width Inspection Board, 3 PCS.
④Take down the belt of tapping motor, then disassemble the tapping motor. Remove the screws securing
the massage mechanism on the running frame and the screws securing nylon clamp which fixes wires.
⑤Adjust the position of the massage mechanism and the width of the swinging arms, until the massage
mechanism is taken off.
Close-end wire connector of tapping motor
1 terminals on the board Screws(2pcs)securing the board

19
8. Replacement of up or down stroke photo-electricity assembly
①Disassemble the rear cover of the back rest.
②Pull out the terminal of the wire.
③Remove the screws tightening the PCB of up or down stroke photo-electricity assembly
to the sheet-metal with a plus screwdriver and nipper pliers.
④Proceed in the reverse order of disassembly when replacement needed.
Tools: a plus screwdriver and nipper pliers
Screws securing the mechanism
Massage mechanism taken down
Remove the screws
(
3
p
cs
)
The terminal of
the wire
Adjust the position of the massage
mechanism and the width of the
swinging arms

20
VII. Maintenance of the seat part
9. Replacement of the remote controller holder
①Pull out the remote controller from the holder.
②Remove the screw bolt tightening the holder.
③Take away the holder from the support.
④Install a new holder on the support.
⑤Tighten the holder with the screw bolt.
10. Replacement of the remote controller
①Remove the screws (9pcs) on the back cover of the controller
②Disconnect the wire terminal of controller PCB; Then remove the screws(2pcs) on the PCB
.
③Then you can replace any parts of the controller including PCB, Front cover and Back cover.
11. Replacement of the remote controller wire
④Along the controller wire and remove the screws(6pcs) fixing the “R” nip
and disconnect wire terminal of controller.
⑤Replace the new wire and fix it on the board, then connect
the terminal of controller.
.
12. Replacement of the front panel of seat part
①Turn on the power and raise the foot rest to the highest position.
②Operate the Zero-G 2 function to raise the seat-rest,
③Remove the screws(12pcs) securing the front panel.
④Then the front panel can be removed, replace it with a new one, and tighten it with screws.
Raise the foot rest to the
highest position
Screw bolt
“R” nip
Screw bolt
Screws(12pcs) securing the front panel