Cozzia EC-380 Manual
EC-380 Maintenance Service Manual
By Customer Service Department
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. Error Codes and description
2.1 Error Message will be displayed when Malfunction
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.
ERR Code
Phenomenon
Malfunction description
Solutions
Remarks
remote control tested any
key pressed more than 25
seconds
one of the KEY has been
blocked
check the key of the remote
control
turn on the chair
remote control did not
connected
the remote control wire is
broken or the remote control
wire is disconnected
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
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
1.change wideth inspection
board
2.change backrest
wires.(black and gray)
3.change kneading motor
activate
auto-check
model
kneading belt is lost
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
Main PCB is broken
change PCB
activate
auto-check
model
when not kneading but the
wideth inspection signal still
can be tested
Main PCB is broken
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.
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.
.upper limit sensor is broken.
.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
test signals from front
sensor and rear sensor at
the same time.
1.the 6 core signal wire is
disconnected.
2.up & down limit sensor of
the foot rest are broken
1.check whether the 6 core
signal wire is well connected.
2.change up & down limit
sensor of the foot rest.
activate
auto-check
model
didn't test signal from front
sensor of the footrest more
than 20 seconds.
1.the down limit sensor of the
foot rest is broken
2.foot rest extending motor is
broken or disconnected
1.change down limit sensor of
the footrest
2.change the footrest
extending motor or check
whether the motor wire is
well connected.
activate
auto-check
model
After tested front sensor
signal, then tested front
sensor signal in 2.5
seconds.
the upper limit sensor of foot
rest is broken
change the upper limit sensor
of the footrest.
activate
auto-check
model
didn't tested rear sensor
signal in 20 seconds
1.the upper limit sensor of
foot rest is broken
2.foot rest extending motor is
broken or the motor wire is
disconnected.
1.change upper limit sensor
of the foot rest.
2.change foot rest exteding
motor
activate
auto-check
model
After tested rear sensor
signal, then tested front
sensor signal in 2.5
seconds.
the lower limit sensor of the
foot rest is broken
change footrest lower 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
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
2.2 Common Troubles and Maintenance Methods are listed as following:
Serial NO.
Phenomenon
Description
Maintenance Methods
01
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.
02
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.
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.
6：Replacing of the fabric of the backrest
A：Unzip the zipper which connects the backrest pad and the backrest.
B：Find the two zippers at the bottom of the front back. Unzip these two zippers, then we can
take the fabric off.
7：Replacing Backrest Assembly.
Warning: When the secure pin of Backrest Assembly is removed, the Backrest Assembly
will drop down. Remember to support the Assembly
A：Disconnect backrest pad from the backrest
zipper head
zipper head
zipper head
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