Cozzia EC-326G-CO Manual

Maintenance Service Manual

MODEL: EC-326G-CO

By Customer Service Department

CATALOG

1: Precautions for inspection and repair

2: Massage chair auto-check list

3: Common Troubles and Maintenance Methods list.

4: Tools List

5-1:Guidance of disassemble the backrest pad assy

5-2: Guidance of disassemble the backrest

5-3: Guidance of detach front cover & rear cover of backrest.

5-4: Guidance of detach up & down limit sensor

5-5: Guidance of detach the kneading motor.

5-6: Guidance of change the counting sensor of rolling motor

5-7: Guidance of disassemble the massage mechanism

5-8: Guidance of change rolling motor unit.

5-9:Guidance of service the seat pad assy

5-10:Guidance of disassemble the side board.

5-11: Guidance of disassemble main PCB

5-12: Guidance of disassemble the Transformer

5-13: Guidance of disassemble the Air valve.

5-14: Guidance of disassemble Inflator Pump

5-15: Guidance of disassemble the remote control

5-16: Guidance of disassemble footrest actuator and backrest actuator

5-17: Guidance of change the lower side board

5-18: Guidance of service the footrest.

6: Main PCB connecter diagram.

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.

When changing more than one part, identify the parts 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 carpet to prevent scratching or dirtying the

unit.

Clean the workplace after repair work is completed.

2:massage chair auto-check list

ON/OFF: KNEAD + TAP + POWER(buttons on the controler), press and hold the three buttons in two

senconds to turn on the automatic analysis system model.

After activating the "auto-checking model", the display screen of the controller keeps flashing; if

there is something wrong with the chair, the time area will show you the exact code of the

malfunction, meanwhile the buffer will make noise.

Code

Phenomenon

Malfunction description

Solutions

Remarks

remote control

tested any key

pressed more

than 25 seconds

1.one of the KEY has been

blocked.

1.check the key of the

remote control

turn on the

chair

remote control did

not connected

1.the remote control wire

is broken or the remote

control wire is

disconnected

1.reconnecte the

remote control wire or

change the remote

control wire.

turn on the

chair

backrest signal is

abnormity

1.backrest wire(black) is

not well connected.

2.up & down limit sensor

is broken

1.check whether the

backrest wire(black) is

well connected

2.change the up &

down limit sensor

turn on the

chair

backrest signal is

abnormity

1.backrest wire(black) is

not well connected.

2.the counting sensor of

the rolling motor is broken

1.check whether the

backrest wire(black) is

well connected

2.change the counting

sensor of the rolling

motor

activate the

Rolling

function

tested more than 2

wideth inspection

signal

1.wideth inspection board

is broken

2.wideth inspection wire is

not well connected

1.change wideth

inspection board

2.change backrest

wires.(black)

activate the

Rolling

function

more than 5

seconds did not

tested the wide

signal

1.wideth inspection board

is broken

2.the wire connect to the

wideth inspection board is

1.change wideth

inspection board

2.change backrest

wires.(black and gray)

activate

auto-check

model

disconnected

3.kneading motor is

broken or kneading belt is

lost

3.change kneading

motor

more than 5

seconds did not

tested the middle

signal

1.wideth inspection board

is broken

2.the wire connect to the

wideth inspection board is

disconnected

3.kneading motor is

broken or kneading belt is

lost

1.change wideth

inspection board

2.change backrest

wires.(black and gray)

3.change kneading

motor

activate

auto-check

model

more than 5

seconds did not

tested the narrow

signal

1.wideth inspection board

is broken

2.the wire connect to the

wideth inspection board is

disconnected

3.kneading motor is

broken or kneading belt is

lost

1.change wideth

inspection board

2.change backrest

wires.(black and gray)

3.change kneading

motor

activate

auto-check

model

when not

kneading but the

wideth inspection

signal still can be

tested

1.Main PCB is broken

1.Change PCB

activate

auto-check

model

tested signals

from up & down

limit sensor at the

same time.

1.up & down limit sensor

are broken

2.backrest wire(black) is

disconnected.

1.Change up & down

limit sensor

2.check whether the

backrest wire(black)is

well connected

activate

auto-check

model

more than 40s

didn't tested the

signal from the up

limit sensor

1.upper limit sensor is

broken.

2.backrest wires( black

and gray) are

disconnected

3.rolling motor is broken

or rolling motor wire

disconnected

1.change upper limit

sensor

2.check whether the

backrest wire(black) is

well connected.

3.change rolling motor

or rolling motor wire.

activate

auto-check

model

height counting

signal error

1.the counting sensor of

the rolling motor is broken

2.backrest wire(black) is

disconnected

1.change the counting

sensor of the rolling

motor.

2.check whether the

backrest wire(black) is

well connected.

activate

auto-check

model

can't test signal

from foot rest

recline actuator

1.down limit sensor is

broken

1.change down limit

sensor

2.check whether the

backrest wire(black) is

well connected.

3.change rolling motor

activate

auto-check

model

more than 40s

didn't tested the

signal from the up

limit sensor

1.down limit sensor is

broken

2.the backrest wire(black)

is disconnected.

3.rolling motor is broken

or disconnected

1.change down limit

sensor

2.check whether the

backrest wire(black) is

well connected.

3.change rolling motor

activate

auto-check

model

after tested signal

from down limit

sensor then

tested signal from

up limit sensor in

2 seconds.

1.upper limit sensor is

broken.

1.change upper limit

sensor

activate

auto-check

model

when start the

backrest recline

actuator, there is

no counting signal

for more than 2.5

seconds

1.backrest recline actuator

is broken

2.backrest recline actuator

wire is disconnected

3.the signal wire of the

backrest recline wire is

disconnected

1.change backrest

recline actuator

2.check whether the

backrest recline

actuator motor wire is

well connected.

3.check whether the

signal wire of the

backrest recline

actuator is well

connected

activate

auto-check

model

3: Common Troubles and Maintenance Methods are listed as following:

Serial

NO.

Phenomenon

Description

Maintenance Methods

No Function

When Starting.

The LCD isn’t illuminating:

①Fuse melts (in the Power Source Box or on

the transformer wire).

②Power supply circuit poorly connected.

③main PCB fails.

①Replace Fuse.

②Replace Power Box.

③Replace main PCB.

No function

when starting.

The LCD is illuminating：

①Mechanical switch fails or it’s wire is

opened.

②Up or Down Stroke Photo-electricity fails.

③Main PCB fails.

④Kneading is on without pressing any key

when starting and no response by pressing

other keys.

①Replace mechanical switch or it's

wire.

②Replace Stroke Photo-

electricity.

③Replace the main PCB.

④Width Inspection Board of PCB

fails, replace it.

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.

No Partial

Function.

①Height Inspection Terminal or wire poorly

contacts.

②Height Counting Subassembly fails.

①Plug the terminal securely or

replace the wires.

②Replace Height Counting Sub

-assembly.

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 Sub-

assembly.

③Replace Up-Stroke Sub-

assembly.

④Replace Rolling Motor.

⑤Replace main PCB.

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.

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.

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.

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.

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.

No vibration by

the motors in

the seat-pad.

①Print motors fail.

②The terminals and wires are poorly

connected or the wires fail.

③Main PCB fails.

①Replace the print motor.

②Plug the terminal securely or

replace the wires.

③Replace main PCB.

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.

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.

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