Panasonic EP-MA73 User manual

© Panasonic Corporation 2014 Unauthorized copy-
ing and distribution is a violation of law.
Order Number HPD1405U01CE
Massage Lounger
Model No. EP-MA73
Destination : Canada, USA
TABLE OF CONTENTS PAGE PAGE
1 Specifications ----------------------------------------------------- 2
2 Technical Descriptions ----------------------------------------- 3
3 Location of Controls and Components ------------------- 4
4 Operating Instructions------------------------------------------ 8
5 Service Mode ------------------------------------------------------ 9
6 Troubleshooting Guide----------------------------------------22
7 Service Fixture & Tools----------------------------------------39
8AIR--------------------------------------------------------------------40
9 Disassembly and Assembly Instructions ---------------44
10 Exploded View and Replacement Parts List -----------75

2
1 Specifications
For those who weigh 100 kg (220.3 lbs) or more, the product operations may make more noise and the fabric cover may wear
faster.
Power Supply AC 120 V 60 Hz
Rated Current 3.2 A
Upper Body
Massage Massage area (Up-Down) Approx. 78 cm (30.7 in.) (The massage heads move a total of approx. 62 cm (24.4 in.))
Massage area (Left-Right) Distance between massage heads during operation (including width of massage heads)
Neck, shoulder, back, lower back: Approx. 5 cm - 21 cm (2.0 in.- 8.3 in.)
Distance between massage heads (including width of massage heads) during back roll
and up-and-down movement: Approx. 5 cm - 17 cm (2.0 in.- 6.7 in.)
Massage area (Forward-Back) Projected amount of massage head (Intensity adjustable)
Approx. 10 cm (3.9 in.)
Massage speed Knead: From approx. 4 times/min - approx. 73 times/min
Tap: From approx. 190 times/min - approx. 520 times/min (one side)
Moving speed: From approx. 1cm/s - approx. 5cm/s
Air Massage Air Pressure
(Calf) 3: Approx. 32 kPa 2: Approx. 29 kPa
1: Approx. 17 kPa
(It may vary with the area slightly.)
Reclining angle Backrest: Approx. 120° - 170°
Leg rest (Leg & sole massage section): Approx. 5° - 85°
Leg rest (Flat section): Approx. 15° - 95°
Automatic shut-off Around 16 minutes (automatically ends)
Dimensions When not reclined (H x W x D) Approx. 115 cm x 90 cm x 122 cm (45.3 in. × 35.4 in. × 48 in.)
When reclined (H x W x D) Approx. 66 cm x 90 cm x 202 cm (26 in. × 35.4 in. × 79.5 in.)
Weight of unit Approx. 85 kg (187.2 lbs)
Dimensions of box (H × W × D) Approx. 75 cm × 74 cm × 160 cm (29.5 in. × 29.1 in. × 63 in.)
Weight in box Approx. 100 kg (220.3 lbs)
Maximum user weight Approx. 120 kg (264.3 lbs)

3
2 Technical Descriptions
2.1. Operation of Electromagnetic Valves and Air Bags
Air massage is operated driving the Pump unit x 1pc, 3-way 3-roll electromagnetic valve, and 3-way 4-roll electromagnetic valve.
1. When the operation stops, the Pump and all the Electromagnetic valves are OFF.
2. While the Reclining lift motor and the Ottoman lift motor operates, the control of air stops.
(Air is in the ventilation.) However, when the leg stretch operates, the Lift motor operates controlling the air.
3. When in the operation by the Controller Off/on switch, and the Electric reclining lift and the Electric ottoman lift are operated,
the Pump stops. (The air pressure is maintained.)

4
3 Location of Controls and Components
3.1. Massage Lounger

5

6
3.2. Controller
* Display language on the controller may differ depending on the region the unit was purchased.

7
3.3. Display

8
4 Operating Instructions
4.1. Turning on the Power

9
5 Service Mode
5.1. Preparation of Secret Mode
Before proceeding to each Secret Modes, execute the following Preparation of the Secret Mode. Insert the Power plug to the power
source and turn on the Switch on the Power source switch box.
1. Turn on the Switch on the Power source switch box.
2. While pushing the buttons of SWEDISH and STRETCH, keep pushing the Off/On button for more than three seconds.
(SWEDISH, STRETCH, and USER3 lights and it buzzes three times.)
3. Push NECK, then SHOULDER of MANUAL, and at final push the OK button.
(CO is displayed on the screen.)
* You can choose each operation modes in the Secret Mode list by pushing the BACK INTENSITY button. After choosing,
push the OK button.
You can resume to the Secret Mode list by pushing the OK button for more than three seconds.

10
5.2. Display of total usage time [C0]
1. Proceed the procedures 1-4 of 5.1. Preparation of Secret Mode.
2. Push the button of BACK INTENSITY till C0 appears, and push the OK button.
3. Push the OK again, then 1,000’s place, 100’s plate, ten’s place, and single’s place are shown every time you push the OK but-
ton.

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5.3. Display of each operation time [C3]
1. Proceed the procedures of 5.1. Preparation of Secret Mode.
2. Push the button of BACK INTENSITY till C3 appears, and push the OK button twice.
3. Then, push the BACK INTENSITY and choose from 01 to 08, and from 11 to 16.
4. Push the OK again, then 1,000’s place, 100’s plate, ten’s place, and single’s place are shown every time you push the OK but-
ton.
5. If you push the OK, again, it buzzes once, then the operation resumes to 3.
C3 01 Total usage time of Width motor Display of the total usage time of Width motor 0 - 9999
02 Total usage time of Intensity motor Display of the total usage time of Intensity motor 0 - 9999
03 Total usage time of Up/down motor Display of the total usage time of Up/down motor 0 - 9999
04 Total usage time of Tapping motor Display of the total usage time of Tapping motor 0 - 9999
05 Total usage time of Ottoman lift Display of the total usage time of Ottoman lift motor 0 - 9999
06 Total usage time of Reclining lift Display of the total usage time of Reclining lift motor 0 - 9999
07 Total usage time of Pump Display of the total usage time of Pump 0 - 9999
08 Total usage time of Massage block heater Display of the total usage time of Massage block heater 0 - 9999
09 Total usage time of Foot heater Display of the total usage time of Foot heater 0 - 9999
11 Total usage time of SWEDISH Display of the total usage time of SWEDISH 0 - 9999
12 Total usage time of DEEP Display of the total usage time of DEEP 0 - 9999
13 Total usage time of SHIATSU Display of the total usage time of SHIATSU 0 - 9999
14 Total usage time of STRETCH Display of the total usage time of STRETCH 0 - 9999
15 Total usage time of NECK/SHOULDER Display of the total usage time of NECK/SHOULDER 0 - 9999
16 Total usage time of LOWER BACK Display of the total usage time of LOWER BACK 0 - 9999
17 Total usage time of DEMO mode Display of the total usage time of DEMO mode 0 - 9999

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5.4. Display of malfunction analysis-1 [C4]
Category of abnormal stop is shown.
1. Proceed the procedures of 5.1. Preparation of Secret Mode.
2. Push the button of BACK INTENSITY till C4 appears, and push the OK button. Any of the following is shown.
* If there is something wrong with the Motors or Sensors, go to C7 or C8.
5.5. Display of malfunction analysis-2 [C6]
It is shown at which operation the Massage block stops abnormally.
1. Proceed the procedures of 5.1. Preparation of Secret Mode.
2. Push the button of BACK INTENSITY till C6 appears, and push the OK button. Any of the following is shown.
5.6. Display of malfunction analysis-3 [C7]
It is shown which parts were stalled in the abnormal stop.
1. Proceed the procedures of 5.1. Preparation of Secret Mode.
2. Push the button of BACK INTENSITY till C7appears, and push the OK button. Any of the following is shown.
Entry Operation mode Explanation of the summary Condition
Type No. Display Contents
C4 Display of abnormal stop contents Display of the abnormal stop infor-
mation 0Normal
1 Motor stalled
2 Sensor malfunction
3 Communication error
4 Sub PCB malfunction
5 Abnormal load
6 Massage block heater error
7 Foot heater error
Entry Operation mode Explanation of the summary Condition
Type No. Display Contents
C6 Display of abnormal stop operation
contents It is shown at which operation the Massage block stops abnormally. 0Normal
1 Massaging
2 Upward movement
3 Downward movement
4 Wider movement
5 Narrower movement
6 Stronger movement
7 Weaker movement
Entry Operation mode Explanation of the summary Condition
Type No. Display Contents
C7 Display of the stalled parts It is shown which parts were
stalled. 0Normal
1 Up/down motor
2 Width motor
3 Intensity motor
4 Tapping motor
5 Ottoman lift motor
6 Continuous Ottoman lift motor
7 Reclining lift motor
8 Continuous Reclining lift motor

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5.7. Display of malfunction analysis-4 [C8]
It is shown in which sensing is when the abnormal stop occurred.
1. Proceed the procedures of 5.1. Preparation of Secret Mode.
2. Push the button of BACK INTENSITY till C7appears, and push the OK button. Any of the following is shown.
*U10 display does not mean abnormal stops. Therefore, it is not memorized in the Microcomputer.
Entry Operation mode Explanation of the summary Condition
Type No. Display Contents
C8 Display of the kinds of sensor
abnormal It is shown at which sensor opera- tions the Massage block stopped. 00 Normal
01 Up/down sensor detects no
change.
02 Up/down sensor detects abnor-
mal change.
03 Abnormal sensing in the begin-
ning of the Up/down motor
04 Width sensor detects no
change.
05 Width sensor detects abnormal
change.
06 Abnormal sensing in the begin-
ning of the Width motor
07 Intensity sensor detects no
change.
08 Intensity sensor detects abnor-
mal change.
09 Abnormal sensing in the begin-
ning of the Intensity motor
10 Abnormal rotation speed of the
Tapping motor
11 Normal Ottoman sensor
12 Ottoman sensor detects abnor-
mal change.
13 Reclining sensor detects no
change.
14 Reclining sensor detects
abnormal change.
15 Massage block heater error
16 Foot heater error

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5.8. Display of function analysis-5 [C9]
It is shown in which operation the massage chair stopped abnormally and what malfunction has occurred.
1. Proceed the procedures 1-3 of 5.1. Preparation of Secret mode.
2. Push the button of BACK INTENSITY till C9 appears, and push the OK button.
3. Again, push the OK button, then push the button of BACK INTENSITY till the necessary number appears, and push the OK
button.
When 01 is selected, the operation is displayed when abnormal stop occurred.
If no abnormal stop occurs, nothing is displayed.
When 02 is selected, the past five memorized abnormal stops are displayed.
(Example of the display is shown below.)
After the memory is full of five abnormal stops, the oldest memory is deleted when a new memory is memorized.
When 03 is selected, all the memorized abnormal stops are deleted.
* Abnormal stop information except the total operation time and each operation time is deleted.
Example: Total usage time of the abnormal stop operation
(Latest error: motor stalled (1), previous error: motor stalled(1), two error before: communication error occur.)
Entry Operation mode Explanation of the summary
Type No.
C9 01 Display of the abnormal stop operation Display of Program courses, massaging, and parts
02 Display of the accumulative abnormal stop
operation Display of the past memorized five abnormal stops
03 Delete of the display of the accumulative
abnormal stop operation -

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5.9. Checking after assembly [CA]
Check if the Massage mechanism block is properly assembled or there is nothing wrong with the Sensors or Motors.
* Detect failures in Sensors or Motors.
1. Proceed the procedures of 5.1. Preparation of Secret Mode.
2. Push the button of BACK INTENSITY till CA appears, and push the OK button.
3. Massage mechanism block starts operating. If there is nothing wrong, it stops normally.
4. If you stop the operation halfway, push the buttons of Off/On or Stop on the Controller.
5.10. Adjustment of Body pressure sensor [CC].
1. Proceed the procedures of 5.1. Preparation of Secret Mode.
2. Push the button of BACK INTENSITY till CC appears, and push the OK button.
3. Push the OK button again.
Caution: Be careful to check if there is no pressure applied on both right and left Massage balls and push the OK but-
ton.
If the OK button is pushed with the pressure on the Massage balls, it may cause the malfunction that shoulder posi-
tion is not accurate in sensing.
4. Push the Off/On button on the Controller. The adjustment is done.

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5.11. Manual mode [CE]
Manual mode is used to remove or install the Massage mechanism block from or to the Massage chair, or to check each
operations.
1. Proceed the procedures of 5.1. Preparation of Secret Mode.
2. Push the button of BACK INTENSITY till CE appears, and push the OK button.
3. You can check each operations by pushing the following Switches.
• Reclining switch (Back Up/down), Ottoman switch (Ottoman Up/down)
• Position switch (Upward, downward, narrower, wider)
• Back intensity (Strong, weak)
• Massage block heater (Off, on)
• Foot heater (Off, on)
• Manual (Neck, shoulder, middle back, lower back, full back, tap)
Checking the temperature of the Heater
1. You can check the temperature of the Heater if you push the OK button after 5.12.2 then push the REPEAT button and the
ULTRA KNEAD button. However, if the Massage block heater OFF/ON button is not pushed, the normal temperature is dis-
played.
2. To stop the operation, push the Off/on button or the stop button.

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5.12. Checking the Heater
Check if the Heater increases its temperature properly by the list of the room temperature and its time till it reaches designated tem-
peratures.
(Our criterion is that the spot touching the human body is 50 °C (122°F). However, there is the balance 5 °C (41°F) in the Heat sen-
sor and the spot of the human body touching the Massage ball, therefore in the list 45 °C (113°F) is used as criterion.)
Caution:
• Carry out the checking with nobody sitting or without operation of the Massage mechanism block.
• Heater massage balls need to be cool enough (normal temperature).
• The balance between right/left Massage balls is within ±5 °C (41°F). If the values are within this range, it is not faulty.
Checking procedures
1. Start CE mode of the Secret Mode of the Controller.
2. If you push the REPEAT button for several times,,,,,,,,
For example,
<CE> Once <02> Twice <05> Thrice <2> Fourth <4>
This means that one of Heal balls is 25 °C (77°F) and the other is 24 °C (75°F). If you push OK, it resumes to the beginning.
* You can know the original temperatures of the Massage balls.
3. Push the button of Massage block heater OFF/ON and turn on the switch, and measure the time of the increase of the tem-
perature.
4. Repeat the procedures of 2. and measure the time till 45 °C (113°F) is shown.
5. Check the Massage block heater by the list. For example, if the room temperature is 20 °C (68°F) and 45 °C (113°F) is shown
within 150 seconds, it can be judged “Good”.

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5.13. Packing mode [00]
Proceed the following procedures of Preparation of Secret mode.
1. Insert the Power cord to the power source, and turn on the Power source switch box.
2. While pushing the buttons of DEEP and SHIATSU, keep pushing the button of Off/On for more than three seconds.
(USER 1, 2, 3 buttons light, and buzzer sounds once.)
3. Push the button of Ottoman upward.
* Packing conditions are as the following list.
* Push the Quick Stop button to stop the operation.

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5.14. Error Display
If there is something wrong with each Sensors, each Motors, Power source and Signal lines, the following error codes
blink for approximately 10 seconds.
Use this chart just for your reference.
* How to cancel the condition of "NO" for reusable
Proceed the procedures 1-3 of 5.1. Preparation of Secret mode, and push the Quick Stop button.
Even after the old part was replaced with new one, you need to proceed these procedures to use the products, otherwise F mean-
ing errors is displayed, which unable to use products.
Error
codes Malfunction Phenomena Controller Wrong parts Reusable
F30 Body pressure sensor *including the loose
connectors Operation stops Flashes Extra weight YES
F31 No weight (Nobody on the Mas-
sage chair
F11 Data transfer error Connection cords, etc.
F12 Sub PCB Hz sensor error Sub PCB
F03 Massage block heater error (Heater discon-
nection, short-circuit)(Thermistor poor con-
nection)
Heater/Thermistor NO
F04 Massage block heater error (Thermistor
disconnection) Thermistor
F05 Massage block heater error (Thermistor
short-circuit)
F06 Massage block heater error (Triac 301 on
the Main PCB short-circuit) Main PCB
F71 Foot heater error (Heater malfunction) Heater/Thermistor
F72 Foot heater error (Thermistor poor connec-
tion) Thermistor
F73 Foot heater error (Thermistor disconnec-
tion)
F74 Foot heater error (Thermistor short-circuit)
F75 Foot heater error (Transistor short-circuit) Sub PCB
F76 Foot heater error (Sensor wire error) Sensor wire
F33 Sensor malfunction Tapping sensor
F34 Ottoman sensor YES
F35 Reclining sensor
F36 Width sensor
F37 Up/down sensor
F38 Intensity sensor
F14 Motor stall Ottoman motor
F15 Reclining motor
F16 Ottoman motor coninuously ON
F17 Reclining motor continuously ON
F18 Tapping motor
U10 Seat sensor Body pressure sensor

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5.15. Self-Diagnosis list
Entry Operation mode Explanation of the summary Display
Type No.
C0 Display of total operation time Display of total operation time 0 - 9999
C3 01 Operation time of Width motor Display of total operation time of Width
motor 0 - 9999
02 Operation time of Intensity motor Display of total operation time of Intensity
motor 0 - 9999
03 Operation time of Up/down motor Display of total operation time of Up/down
motor 0 - 9999
04 Operation time of Tapping motor Display of total operation time of Tapping
motor 0 - 9999
05 Operation time of Ottoman lift Display of total operation time of Ottoman
lift motor 0 - 9999
06 Operation time of Reclining lift Display of total operation time of Reclining
lift motor 0 - 9999
07 Operation time of Pump Display of total operation time of Pump 0 - 9999
08 Operation time of Massage block
heater Display of total operation time of Massage block heater 0 - 9999
09 Operation time of Foot heater Display of total operation time of Foot
heater 0 - 9999
11 Operation time of SWEDISH Display of total operation time of SWEDISH 0 - 9999
12 Operation time of DEEP Display of total operation time of DEEP 0 - 9999
13 Operation time of SHIATSU Display of total operation time of SHIATSU 0 - 9999
14 Operation time of STRETCH Display of total operation time of STRETCH 0 - 9999
15 Operation time of NECK/SHOUL-
DER Display of total operation time of NECK/ SHOULDER 0 - 9999
16 Operation time of LOWER BACK Display of total operation time of LOWER
BACK 0 - 9999
17 Operation time of DEMO cource Display of total operation time of DEMO
cource 0 - 9999
C4 Display of abnormal stop Display of abnormal stop 00: OK
01: Motor stall
02: Sensor faulty
03: Communication error
04: Sub PCB faulty
05: Sensing abnormal load
06: Massage block heater error
07: Foot heater error
C6 Display of abnormal stop operation Display of the operation in which sudden
stop occurred 00: OK
01: Massaging
02: Upward
03: Downward
04: Wider
05: Narrower
06: Stronger
07: Weaker
C7 Display of stalled parts Display of stalled parts 00: OK
01: Up/down motor
02: Width motor
03: Intensity motor
04: Tapping motor
05: Ottoman lift motor
06: Ottoman lift CONTINUE
07: Reclining lift motor
08: Reclining lift CONTINUE