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Panasonic EP790-C1 Service Manual

Massage lounger
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Service Manual
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ORDER NO.HPD0011C18C1
MASSAGE LOUNGER
EP790-C1
●
Power source
Power consumption
Kneading speed
Tapping speed
Rolling massage speed
Massaging width
Back rolling width/tapping width : Narrow : Approx. 85 mm/: Wide : Approx. 110 mm
Massage heads up/down travel
Regional back rolling
Intensity adjustment
Shoulder position adjustment
Automatic shut-off
Leg massager - vibration
Dimensions (H x W x D)
Reclining angle
Weight
Accessories
© 2000 Matsushita Electric Works, Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.
SPECIFICATIONS
: 120V AC, 60Hz
: 230W
: Approx. 28 times/min.
: Approx. 500 times/min.(per side)
: Approx. 1 cycle every 33 sec.
: Shoulder/lower back section : Approx. 75mm
: Approx. 600 mm
: Automatic repetition within approx. 120mm range
: Adjusts massage head protrusion steplessly within approx. 45 mm range
: 7 steps
: Approx. 15 min.
: Approx. 3200 cycles/min./ Shut-off timer : Approx. 30 min.
:•Not reclined and leg rest retracted : 1,050 x 755 x 1,050 mm/ •Reclined and leg rest extended : 620 x 755 x 1,750 mm
: Approx. 127° to 170°
: 56 kg
: Back cushion, headrest

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Summary of Contents for Panasonic EP790-C1

  • Page 1 Service Manual TOP NEXT ORDER NO.HPD0011C18C1 MASSAGE LOUNGER EP790-C1 ● SPECIFICATIONS Power source : 120V AC, 60Hz Power consumption : 230W Kneading speed : Approx. 28 times/min. Tapping speed : Approx. 500 times/min.(per side) Rolling massage speed : Approx. 1 cycle every 33 sec.
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  • Page 3 1.1 When Chair Arrives: TOP PREVIOUS NEXT When shipped from the factory, for efficient transport, the chair is packaged in the configuration shown in the drawing below. In this configuration, normal reclining motion is not possible. Therefore, upon arrival of the chair, always follow thefollowing steps to initialize operating settings. *Check that the power switch is [On] (found at the back of the hinge cover).
  • Page 4 •@ TOP PREVIOUS NEXT...

  • Page 5: Installation

    1 Installation TOP PREVIOUS NEXT 1.1 When Chair Arrives: 1.2 Installation Position: 1.3 Returning Chair to Packaged Configuration •@ TOP PREVIOUS NEXT...

  • Page 6: Installation Position

    1.2 Installation Position: TOP PREVIOUS NEXT To assure that the chair has enough space to recline to the rear, please install it at least 40cm from the wall. •@ TOP PREVIOUS NEXT...
  • Page 7 1.3 Returning Chair to Packaged Configuration TOP PREVIOUS NEXT When shipped from the factory, for efficient transport, the chair is packaged in the configuration shown in the figure on page 2. After competing the initial operating settings of page 2, if the chair is to be returned to the packaged configuration, please follow the following instructions.
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  • Page 9 2 Hand control functions TOP PREVIOUS NEXT CONTROLLER Cover closed: Programmed course massage Cover open: Manual massage...
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  • Page 11: Massage Range (Movement Range Of Massage Wheels)

    3 Massage range (movement range of massage wheels) TOP PREVIOUS NEXT 3.1 Upward massage, Downward massage, Rolling massage, Regional rolling massage 3.2 Tapping, Rolling, Regional rolling, Tapping rolling, Regional tapping rolling •@ TOP PREVIOUS NEXT...
  • Page 12 3.1 Upward massage, Downward massage, Rolling massage, Regional rolling massage TOP PREVIOUS NEXT Width cannot be adjusted Neck to waist : width 75mm (minimum) Intensity adjustment Upward and downward massage (from gentle to strong) :45mm-wide adjustability where massage heads push out toward body as intensity increases.Others (from gentle to strong) :15mm-wide adjustability where massage heads push out toward body as intensityincreases.
  • Page 13 3.2 Tapping, Rolling, Regional rolling, Tapping rolling, Regional tapping rolling TOP PREVIOUS NEXT Width adjustment Neck to waist : Massage range width : 3-5/16 in. or 4-5/16 in. (85mm or 110mm) Intensity adjustment Tapping : 45mm-wide adjustability where massage heads push out toward body as intensity increases. Others : 15mm-wide adjustability where massage heads push out toward body as intensity increases.

  • Page 14: Components Identification

    4 Components identification TOP PREVIOUS NEXT 4.1 PARTS IDENTIFICATION 4.2 TURNING ON THE POWER •@ TOP PREVIOUS NEXT...
  • Page 15 4.1 PARTS IDENTIFICATION TOP PREVIOUS NEXT •@ TOP PREVIOUS NEXT...
  • Page 16 4.2 TURNING ON THE POWER TOP PREVIOUS NEXT •@...
  • Page 17 TOP PREVIOUS NEXT...

  • Page 18: Required Tools

    5 Required tools TOP PREVIOUS NEXT •@...
  • Page 19 TOP PREVIOUS NEXT...

  • Page 20: Simplified Wiring Diagram

    6 Simplified wiring diagram TOP PREVIOUS NEXT...
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  • Page 22 7 Electrical system: Inspection summary TOP PREVIOUS NEXT Prior to inspecting/repairing the massage block, please inspect the electrical system. *The section entitled "No." below refers to the Parts Number of the Expanded Drawings.
  • Page 23 Prior to inspecting/repairing the electromotion reclining, please inspect the electrical system. *The section entitled "No." below refers to the Parts Number of the Expanded Drawings. •@ TOP PREVIOUS NEXT...

  • Page 24: Display Method Of Massage Block Total Use Time And Operation Time

    8 Display method of massage block total use time and operation time TOP PREVIOUS NEXT Total use time While pushing intensity (-) width(narrow) and massage mode programmed operation buttons simultaneously, turn on the power switch and continue to hold the buttons for approximately 5 seconds.
  • Page 25 Display method Display it by utilizing LEDs of controller. Unit : 5 hours Time display of 5 - 5115 hours possible. •@ TOP PREVIOUS NEXT...
  • Page 27 9 Position of massage wheel during operation, when stopped and when in storage. TOP PREVIOUS NEXT (1) The position can be adjusted in the direction of "gentle". (2) The massage wheel stops in the strong position so that the next start is easy. (3) The massage wheel stops in the gentle position so as to touch the body as little as possible.
  • Page 28 9.1 Timer TOP PREVIOUS NEXT •When the start/reset button is pushed, to prevent overuse, a timer begins. After approximately 15 minutes, time expires, and the massage wheel goes into storage. •The leg massager is also on a timer to prevent overuse (stops after 30 minutes). •@ TOP PREVIOUS NEXT...
  • Page 29 10 Power transmission to the drive section. TOP PREVIOUS NEXT Each clutch, when ON (only), has an output of DC 24V. massage 1. Motor→ 2. Tapping belt→ 3. Tapping clutch→ 4. Massager belt→ 5. Massage clutch→ 6. Intermediate gear block→ 7. Drive pipe→ 8. Massage wheel block up/down 1.
  • Page 30 1. Motor→ 2. Up/down belt→ 3. Intensity adjustment block→ 4. Massage wheel block tapping 1. Motor→ 2. Tapping belt→ 3. Tapping clutch→ 4. Massage wheel block •@ TOP PREVIOUS NEXT...

  • Page 31: Motion Of The Clutch And Belt Based On Various Massager Operations

    11 Motion of the clutch and belt based on various massager operations. TOP PREVIOUS NEXT Massager operation and belt motion Massager operation and clutch motion...
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  • Page 33: Massager Up/Down Detection Gear Adjustment Method

    12 Massager up/down detection gear adjustment method TOP PREVIOUS NEXT When the massager is removed from the chair, the position of the up/down detection gear changes, resulting in a change of the up/down stop position. When installing the massager on the back frame, be sure to adjust the position with the up/down detection gear.
  • Page 34 While adjusting the distance between the square hole and guide roller F to 0±5mm, check by using the up/down adjustment button found on the manual operation panel of the controller. 7. Install the rail piece A and B, and tighten uniformly the set screws K3-6 (left and right, 3 pcs. each).
  • Page 35 •@ TOP PREVIOUS NEXT...

  • Page 36: Removing The Massage Block

    13 Removing the massage block TOP PREVIOUS NEXT 13.1 Removing the rear cover 13.2 Removing the massager •@ TOP PREVIOUS NEXT...

  • Page 37: Removing The Rear Cover

    13.1 Removing the rear cover TOP PREVIOUS NEXT 1. Remove the fastener screw of the rear cover (bottom-middle) (Cup, S, K4-10). 2. Pressing down the left and right side of lower part of rear cover (the plastic cover is provided inside the ckoth), pull it to this side to remove the rear cover.
  • Page 38 13.2 Removing the massager TOP PREVIOUS NEXT 1. Remove the two installation screws from the massager cover, and take off the cover. 2. Push down the seatback to the front part. •Inspection and repair are done after placing the chair as explained in 1. and 2. above. 3.
  • Page 39 •@...
  • Page 40 TOP PREVIOUS NEXT...
  • Page 41 14 Connecting cord for power supply Connecting cord for controller Power cord relay for leg massage TOP PREVIOUS NEXT 14.1 Cord arrangement of the connecting cord for power supply, connecting cord for controller and power cord relay for leg massage. •@ TOP PREVIOUS NEXT...
  • Page 42 14.1 Cord arrangement of the connecting cord for power supply, connecting cord for controller and power cord relay for leg massage. TOP PREVIOUS NEXT *The three types of wires are to be arranged with the massage block set in its upper most position (in respect to the chair).
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  • Page 44: Disassembly (Massager) And Assembly

    15 Disassembly (massager) and assembly TOP PREVIOUS NEXT The disassembly steps 1 - 5 can be done without removing the massager from the chair (please work with the connector cord removed). 15.1 Removing the intensity adjustment unit. 15.2 Removing the motor 15.3 Removing the tapping shaft assembly 15.4 Removing the tapping clutch 15.4.1 Assembling the tapping clutch...
  • Page 45 15.10.1 Seat and leg rest removal 15.10.2 Removing the under-seat circuits 15.10.3 Removal of electric lift unit 15.10.4 Points regarding assembly of the electrical lift unit 15.10.5 Removing the connector link 15.10.6 Points regarding connector link assembly 15.10.7 Points regarding fastening seat part lead wires (cords) •@ TOP PREVIOUS NEXT...
  • Page 46 15.1 Removing the intensity adjustment unit. TOP PREVIOUS NEXT 1. Cut off the insulated tie (medium) bundling the lead wire and gear box side sensor and the insulated tie (small) bundling the lead wire of intensity sensor with the aid of a nipper. 2.

  • Page 47: Removing The Motor

    15.2 Removing the motor TOP PREVIOUS NEXT 1. Remove the motor lead wire bundle from the clip (large), and remove the motor lead wire connector(white). 2. Remove the massage belt, tapping belt and intensity adjustment belt. 3. Remove the motor ground wire set screw D 4.
  • Page 48 15.3 Removing the tapping shaft assembly TOP PREVIOUS NEXT 1. Cut all the insulated ties bundling each sensor and lead wires with the aid of a nipper, and remove the lead wires bundled to the wire saddles (medium, large). 2. Remove all the connectors to the main circuit board. 3.
  • Page 49 15.4 Removing the tapping clutch TOP PREVIOUS NEXT 1. Perform the removal steps 1 to 12 of 3 Removing the tapping shaft assembly. 2. Remove the tapping clutch assembling screw(Bind,TP,B3-20), remove the tapping gear box B, and remove the tapping clutch.
  • Page 50 15.4.1 Assembling the tapping clutch 15.4.2 Assembling Procedure 15.4.3 Instructions when assembling •@ TOP PREVIOUS NEXT...
  • Page 51 15.4.1 Assembling the tapping clutch TOP PREVIOUS NEXT After removing the tapping clutch from the tapping shaft assembly, assemble them according to the specified procedure. •@ TOP PREVIOUS NEXT...

  • Page 52: Assembling Procedure

    15.4.2 Assembling Procedure TOP PREVIOUS NEXT (see Figures top and middle) 1. Fit the tapping gear box side plate to the shaft of tapping shaft assembly. 2. Fit the E type stop ring to the shaft. 3. Fit the tapping gear box A to the shaft. 4.
  • Page 53 15.4.3 Instructions when assembling TOP PREVIOUS NEXT (see Figure bottom) If there is any clearance between the tapping gear boxes A and B, it is impossible to insert into the hole of the motor side guide plate. •@...
  • Page 54 TOP PREVIOUS NEXT...

  • Page 55: Removing The Gear Box

    15.5 Removing the gear box TOP PREVIOUS NEXT *The drive pipe, up/down shaft, up/down gear, pinion B block, arm (left, right) and guide roller F cannot be disassembled or assembled if the massager is not dismounted from the chair. 1. Perform removal of steps 1 to 10 of " 3. Removing the tapping shaft assembly ". 2.
  • Page 57 •@ TOP PREVIOUS NEXT...
  • Page 58 15.6 Removing and mounting the up/down shaft bolt TOP PREVIOUS NEXT *1. To remove the up/down shaft bolt, the box driver (Ø13 mm) must be used. To install, the torque wrench withØ13 mm must be used. *2. The torque wrench withØ13 mm socket and the box driver (Ø13 mm) are available as parts. 15.6.1 Removing 15.6.2 Mounting •@...
  • Page 59 15.6.1 Removing TOP PREVIOUS NEXT The pinion A and pinion B of massager block (left, right) are secured with the up/down shaft bolts. Remove them with the box driver (Ø13 mm). (It is possible to use the Phillips head screwdriver. But it may deform the screw head. Therefore, it is necessary to use the box driver.) •@ TOP PREVIOUS NEXT...
  • Page 60 15.6.2 Mounting TOP PREVIOUS NEXT •It is necessary to control the tightening torque of the up/down shaft bolt.Up/down bolt tightening torque: 4 N/m (40 kgf-cm). *If the up/down shaft bolt has been insufficiently tightened, it may loosen when the massager moves up and down, and the massager may detach from the chair.
  • Page 61 15.7 Assembling TOP PREVIOUS NEXT 15.7.1 Assembling the oval gear •@ TOP PREVIOUS NEXT...
  • Page 62 15.7.1 Assembling the oval gear TOP PREVIOUS NEXT 1. Put a V mark on the side of the oval gear of drive pipe block as shown in the left Figure. 2. Put a mark as shown in the left Figure on the side of the oval gear of intermediate gear block. 3.
  • Page 63 •@ TOP PREVIOUS NEXT...
  • Page 64 15.8 Removing the right and left arms TOP PREVIOUS NEXT (Remove the massager from the chair before beginning the following procedure.) 1. Perform steps 1 to 7 in section, "5. Removing the gear box." 2. Remove screws A and B which connect the gear box and main frame, and remove the main frame.
  • Page 65 •@ TOP PREVIOUS NEXT...
  • Page 66 15.9 Construction: Electrical reclining (leg rest link) TOP PREVIOUS NEXT Construction is such that during electric reclining, when the seatback is lowered, the leg rest is linked and is extended.
  • Page 67 •@ TOP PREVIOUS NEXT...
  • Page 68 15.10 Points regarding disassembly (exterior) and assembly TOP PREVIOUS NEXT 15.10.1 Seat and leg rest removal 15.10.2 Removing the under-seat circuits 15.10.3 Removal of electric lift unit 15.10.4 Points regarding assembly of the electrical lift unit 15.10.5 Removing the connector link 15.10.6 Points regarding connector link assembly 15.10.7 Points regarding fastening seat part lead wires (cords) •@...
  • Page 69 15.10.5 Removing the connector link TOP PREVIOUS NEXT Perform items 1-3 as directed in "3. Removal of Electric Lift Unit." Remove the snap pin (small) of the connector link that links to the back frame, and the hinge pin of the connector link.
  • Page 70 15.10.6 Points regarding connector link assembly TOP PREVIOUS NEXT When installing, install the polyethylene washers. *There is some amount of play in the drive part of the recliner. •@...
  • Page 71 TOP PREVIOUS NEXT...
  • Page 72 15.10.7 Points regarding fastening seat part lead wires (cords) TOP PREVIOUS NEXT Each lead wire should be fastened with insulated ties.
  • Page 73 •@ TOP PREVIOUS NEXT...

  • Page 74: Arranging Massage Block Lead Wires

    16 Arranging massage block lead wires TOP PREVIOUS NEXT •@...
  • Page 75 TOP PREVIOUS NEXT...

  • Page 76: Actual Wiring Diagram

    17 Actual wiring diagram TOP PREVIOUS NEXT...
  • Page 77 •@ TOP PREVIOUS NEXT...

  • Page 78: Troubleshooting

    18 Trouble shooting TOP PREVIOUS NEXT...
  • Page 82 •@ TOP PREVIOUS NEXT...
  • Page 83 19 Other TOP PREVIOUS NEXT 19.1 Grease use 19.2 Examination after inspection and repairing 19.3 Q&A 19.4 Instructions for trouble shooting in response to a customer´s claim. •@ TOP PREVIOUS NEXT...
  • Page 84 19.1 Grease use TOP PREVIOUS NEXT Please grease during each repair. Acceptable Grease •Alvania RA (light brown) •Molycoat (white) •E paste (yellow) •YM103 (yellow) •@ TOP PREVIOUS NEXT...
  • Page 85 19.2 Examination after inspection and repairing TOP PREVIOUS NEXT •Check all operations with the massage block operation test switch. •Check that the massage block operates using the controller. •Check that the massage block operates loaded (i.e. sit in the chair and check). •Upon finishing repairs, when placing the chair, make sure that it has enough space to fully recline.
  • Page 86 19.3 Q&A TOP PREVIOUS NEXT •@ TOP PREVIOUS NEXT...
  • Page 87 19.4 Instructions for trouble shooting in response to a customer´s claim. TOP PREVIOUS NEXT (See regarding Grease use •@ TOP PREVIOUS NEXT...
  • Page 88 20 EXPLODED VIEW TOP PREVIOUS NEXT •@ TOP PREVIOUS NEXT...
  • Page 89 21 REPLACEMENT PARTS LIST FOR EP790-260 TOP PREVIOUS NOTES: RMKS: *1Available individually. *2 Supplying as set. Ref. No. Part No. Part Name& Description Remarks Per Unit WEP790L2989 CONNECTING CORD FOR POWER SUPPLY B WEP790L2949 POWER CORD FOR FOOT MASSAGER A WEP790L2979 POWER CORD FOR FOOT MASSAGER B WEP790L2929...
  • Page 90 WEP596L5197 PLATE FOR TAPPING GEAR BOX WEP569L1147 TAPPING BELT A WEP579L4340 TAPPING SHAFT ASSEMBLY WEP596L0208 PRO TEKTITE COVER FOR ECCENTRIC LINK WEP596L6328 SCREW(6ANGLE.S.K4-22) *1 for pro tektite cover WEP596L1127 INTENSITY ADJUSTMENT BELT WEP569L1397 UP/DOWN DETECTOR GEAR A WEP579L1840 SIDE COVER BLOCK WEP790L2188 UP/DOWN DETECTOR P.C.B WEP596L3417...
  • Page 91 WEP596L6057 UP/DOWN SHAFT BOLT WEP578L0167 FASTENING SPRING FOR SHAFT WEP578L0387 SPRING COVER WEP578L0197 SPRING WEP755L1167 MASSAGE WHEEL UNIT (RIGHT) WEP755L1177 MASSAGE WHEEL UNIT (LEFT) WEP596L0637 ECCENTRIC SHAFT RING WEP755L1187 MASSAGE WHEEL UNIT SET WEP545H1937 GUIDE ROLLER B WEP579L1440 PINION B BLOCK WEP596L0327 PIPE WEP569L0458...
  • Page 92 WEP790K3689 SEAT WEP790L0088 BACK FRAME WEP790L0858 CENTER BELT WE596L9567 SCREW(CUP.S.K4-10) *1 for cord wire WEP755L0687 CORD WIRE D WEP591K0698 RAIL PIECE WEP596L9147 SCREW(TP.K4-6) *1 for rail piece WEP755L9687 SCREW(TP.P.T4-16) *1 for wheel cover WEP005W8527 INSULATED TIE (LARGE) WEP790K3128 BUSHING COVER WEP755K9087 SCREW(TP.K4-14) for bushing cover...
  • Page 93 WEP596S6747 SCREW(BAIND.S.K4-10) *1 for cap WEP790K3908 CASTOR WEP760S9657 SCREW(BAIND.B5-16) *1 for castor WEP578K3377 BOTTOM COVER WEP596N9607 SCREW(TP.K4-10) *1 for bottom cover WEP790L3868 LEFT ARM PIPE WEP755K3547 CLIP FOR FIXING CONTROLLER CORD WEP790L6548 SCREW(TP.3P.M6-10) *1 for under pipe WEP790K0100 UNDER PIPE WEP790K0199 UNDER PIPE A WEP790K1569...
  • Page 94 WEP790K9558 SCREW(TP.M4-10) *1 for seat WEP596L9577 SCREW(CUP.S.K4-6) WEP755K3467 BUSHING WEP004W8507 INSULATED TIM (SMALL) A few WEP004W8517 INSULATED TIE (MEDIUM) A few WEP004W8527 INSULATED TIE (LARGE) A few WEP000S8857 TORQUE WRENCH FOR UP/DOWN SHAFT BOLT WEP000S8867 BOX DRIVER FOR UP/DOWN SHAFT BOLT WEP790K8209 OUTER CARTON WEP790L8118...

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