Johnson J-6800 User manual

Johnson Health Tech. Co., Ltd.
J-6800 MASSAGE CHAIR
SERVICE MANUAL
2014/02/26
Version 1

Johnson Health Tech. Co., Ltd.
Abstract
Abstract
1. Product specification
2. Engineering mode introduction
2-1. Motor testing (P1) 2-2. Sensor testing (P2) 2-3. Current testing (P3)
2-4. Air pressure testing (P4) 2-5. Software version detection model (PU)
3. Anomaly codes
3-1. OF, 90 3-2. A0 3-3. A1 3-4. A2, A3, B0, B1
3-5. B2, B3, C0, C1 3-6. D0 3-7. E0 3-8. E1, E2
4.Common troubleshooting
4.1 Fail to start 4.2 Pushrod motor 4.3 Speaker
4.4 Single air bag 4.5 All air bags 4.6 Warm
4.7 Machine core 4.8 Failure of armrest keyboard shortcuts 4.9 Chair back reclines once the machine is started
4.10 Abnormal up and down of the machine core
5. Appendices
5.1 Replace the machine core 5.2 Software update 5.3 Adjust machine core motor current
5.4 Complete machine breakdown drawing 5.5 Machine core breakdown drawing
5.6 Lower control panel breakdown drawing
Thank you! (Contact us)

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Foreword
Precautions during repairs and faults:
a. When disassembling, unplugging connectors and replacing parts, make
sure to unplug or turn off the power.
b. As semiconductors (IC, etc.) are prone to being damaged by static
electricity, please use human body electrostatic discharge ground wire if it
is required to directly contact the baseplate when performing operations, or
touch the ground wire (ground wires of fridges, washing machines, etc.)
with bare hands to discharge the static electricity of the human body before
carrying out operations.
c. The circuit baseplate mixes high voltage (AC110V, AC220V) and low
voltage (12V, 5V), which may cause electric shock accident; so please do
not have direct contact without preparations.

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1.Product Specifications：

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1.Product Specifications：

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2. Engineering mode introduction:
1. When the power is on and manual controller is not yet
actuated, press fixed point fixed point and warm warm on the manual
controller at the same time for 5 seconds and the
controller will display “ - - ”
2. Then press whole body whole body key to enter engineering mode
3. In the engineering mode,“ P0 ” will be displayed

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4. Use up up and down down to select 8 modes, including
P0~P4+P7+P8+PU
5. In mode selection state, press ok ok to enter the
mode to operate the massage chair
2. Engineering mode introduction:
4
5
6. After mode selection, use up up and down down again to
select the element to be controlled, such as A0~A5
7. After element selection, use massage intensity
strong and weak to adjust the element speed, and
the intensity will be displayed as the air pressure
strength, with one to three representing from weak
to strong
Strong
Medium
Weak
Air pressure strength
Air pressure
strength
Up
Down
Ok
Narrow Wide
Massage
intensity
Strong
Weak
Repeat Pound
Strong
Weak

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8. strong strong or weak weak air pressure strength will make the selected element forward
or reverse (if such element has no forward and reverse states, it will be in
motion state)
9. After entering the mode, press emergency stop emergency stop key to return to the previous
layer of menu; this key has the same function as the ESC key of the computer
keyboard
2. Engineering mode introduction:

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Key Operation
Emergency stop Return to the previous layer of menu
Up, down Forward, reverse mode selection
Massage intensity- strong, weak Forward, reverse mode selection
Air bag strength- strong, weak Select ok and the air bag moves or motor rotates forward
Power switch Exit engineering mode
Air bag strength (panel) Speed selection (3: high, 2: medium, 1: low)
Key operation
LCD Operation
Time window Display selected element number and corresponding current or
position
Air pressure strength Speed display (3: high, 2: medium, 1:low)
LCD
2. Engineering mode introduction:

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— —
P0 : Hand controllertestingmode
P1 : Motor testing mode
P2 : Sensor testing mode
P3 : Current testing mode
P4 : Air bag testing mode
P7 : Automatic testing mode
P8 : Life testing mode
PU : Software version check
2. Engineering mode introduction: Engineering mode introduction:
P0 : Manual controller testing mode
P1 : Motor testing mode
PU : Software version check
P7 : Automatic testing mode
P8 : Life testing mode
P4 : Air bag testing mode
P3 : Current testing mode
P2 : Sensor testing mode

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P1 Motor testing mode
A0 : Up and down movement of machine core
A5 : Machine core pounding motion
A4 : Kneading-Forward and reverse rotation of machine core
A3 : Front and back movement of machine core
A2 : Up and down movement of chair back
A1 : Up and down movement of foot machine
Motor test mode is mainly used to test if each motor works normally and to adjust
chair angle when replacing elements
2-1. Engineering mode: P1

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P2 sensor testing
C0 : Up and down movement of machine core
C4 : Kneading-Forward and reverse rotation of machine core
C3 : Front and back movement of machine core
C2 : Up and down movement of chair back
C1 : Up and down movement of foot machine
Sensor testing is mainly used to test and indicate limits and counts. When
operating motor in this mode, LCD time window will display the digit returned by the
sensor. When the digit exceeds 100, the carrying digit will display “massage intensity”
(100~500) and “motion menu”.
LCD sensing position display window will indicate whether the limit switch is
triggered
2-2. Engineering mode: P2

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Upper limit is
triggered
Tens and ones
of returned
values
Hundreds of
returned values
Current speed of
motor motion
The left figure shows that the upper limit is
reached when the selected machine core (C0) rises
When the upper limit light is, it means that the
machine core is unable to move upward; when the
lower limit light is on, the machine core is unable to
move downward
The lamp signal 1 of massage intensity
represents 100, 2 represents 200, and so on
We can tell by the above rules that the returned
value on the left figure is time window (49) + motion
menu lamp signal (200) =249
2-2. Engineering mode: P2

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P3 current testing
D0 : Up and down migration current of machine core
D4 : Kneading-Forward and reverse rotation current of
machine core
D3 : Front and back migration current of machine core
D2 : Up and down migration current of chair back
Current testing is mainly used to test if the motor current is too high
When the returned number exceeds 100, the carrying digit will display “massage intensity”
(100~500)
D3 is a major test item; if the intensity is set to medium (air bag strength 2) and machine
core forward value is greater than 50, it is likely to generate error code D0 because the
current is too high to lower the sensitivity of induction mechanism
2-3. Engineering mode: P3

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P4 air bag testing
1 : shoulder air bag
5 : right arm air bag
4 : left arm air bag
3 : right waist air bag
Air bag testing is mainly used to test if the air
bag works normally, the inflation rate is normal,
there is leakage, etc.
It can also distinguish the position of the air bag
to be tested via the pattern on the manual
controller.
2-4. Engineering mode: P4
6 : right hip air bag
7 : left hip air bag
8 : air bag on the side of
thigh
9 : thigh air bag
10 : calf air bag
11 : instep air bag below the
leg
2 : left waist air bag
12 : air bag above the leg

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2-4. Engineering mode: P4
Shoulder
Waist
Arm
Hip
Thigh side
Thigh
Upper leg
Lower leg / instep
Calf

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PU software version
U0 : manual controller software
version
U1 : lower control panel
software version
Software version check mode is generally used to confirm current version of massage chair and
confirm again if the update is successful after updating software
a. Press “up” or “down” key to make the time window display “PU” to enter software version check
function
b. Press “ok” function, and the time window displays “U0” to enter manual controller software
version check function
c. Press “air pressure strength” key, and the time window displays in a jumping loop of “v1”-“04”-
“v1”-“04”...... indicating that the manual controller software version is v104
d. Press “up” or “down” key to make the time window display “U1” to enter lower control panel
software version check function
e. Press “air pressure strength” key, and the time window displays in a jumping loop of “v1”-“05”-
“v1”-“05”...... indicating that the lower control panel software version is v105
f. Then, the software version is 104105
2-5. Engineering mode: PU

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•The anomaly codes will appear on the
machine’s manual controller and the
machine will stop
•Maintenance personnel can judge the
fault conditions and anticipate
maintenance materials based on the
error code reported by the customer
3. Anomaly codes
Error code

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Anomaly
code Code description Cause of anomaly Countermeasures
0F
Inconsistency
between manual
controller model
and master
control panel
model
1. Inconsistency between
manual controller
model and lower
control panel
2. Inconsistency of
software versions
1. Confirm manual controller model
2. Replace with correct model software and
then confirm if the machine is normal
3. Replace the lower panel and then confirm if
the machine is normal
4. Ask for assistance of original factory
90 Communication
error
Communication
timeout
between manual
controller and lower
control panel
1. Confirm if connection between manual
controller and lower control panel is normal
2. Update software and then confirm if the
machine is normal
3. Replace the manual controller then confirm
if the machine is normal
4. Replace the lower panel and then confirm if
the machine is normal
5. Ask for assistance of original factory
3-1. Anomaly code (0F, 90)

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Anomaly
code Code description Cause of anomaly Countermeasures
A0 Kneading seized
After the software gives
an instruction, the
kneading sensor of
machine core does not
return signal
1. Check if the connecting line contacts poorly
2. Check if the sensor works normally and the
sensor is centered
Kneading sensor
3-2. Anomaly code (A0)