Cozzia CZ-388 Manual

CZ-388 Maintenance Service Manual

Catalog

1: Precautions for inspection and repair

2: CZ-388 massage chair auto-check list

3: Common Troubles and Maintenance Methods list

4: Tools List

5-1: Guidance of Disassemble the backrest Assy

5-2: Guidance of Disassemble the Backrest pad Assy

5-3: Guidance of Disassemble the Seat pad Assy

5-4: Guidance of Disassemble the Side Board

5-5: Guidance of Disassemble the Thigh Massage unit.

5-6: Replacing Rear cover of Backrest& Front cover of Backrest.

5-7: Guidance of Disassemble up & down limit sensor

5-8: Guidance of Disassemble the Kneading motor

5-9: Guidance of Disassemble the Counting sensor of Rolling motor

5-10: Guidance of disassemble the Gear box

5-11: Guidance of Disassemble the Massage mechanism

5-12: Guidance of disassemble the Rolling motor Assembly

5-13: Guidance of Disassemble the Remote control

5-14: Guidance of Disassemble the Main PCB & Zero-Gravity actuator PCB

5-15: Guidance of Disassemble the Transformer

5-16: Guidance of Disassemble the Air valve

5-17: Guidance of Disassemble the Inflator pump

5-18: Guidance of Disassemble the Footrest assy

5-19: Guidance of Disassemble the Footrest Extend Assy

5-20: Guidance of Disassemble the Air valves inside the Footrest

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.

CZ-388 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

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

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 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

more than 10 seconds

didn't tested kneading

signal

1.Main PCB is broken

1.change PCB

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

after tested signal from

up limit sensor then tested

signal from down limit

sensor in 2 seconds.

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

can't test signal from foot

rest recline actuator

1.foot rest recline actuator

is broken

2.foot rest actuator motor

wire is disconnected

3.the signal wire of foot

rest actuator is

disconnected.

1.change foot rest recline

actuator

2.check whether the foot

rest recline actuator motor

wire is well connected.

3.check whether the signal

wire of foot rest actuator is

well connected

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

when start the zero-gravity

actuator, there is no

counting signal for more

than 2.5 seconds

1.Zero-gravity actuator is

broken

2.zero-gravity actuator

wire is disconnected.

3.the signal wire of

zero-gravity actuator is

disconnected

1.change zero-gravity

actuator

2.check whether the

zero-gravity motor wire is

well connected.

3.check whether the signal

wire of zero-gravity

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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