111 Canfield Avenue • Randolph, New Jersey 07869 • 1-800-LANDICE • FAX 973-927-0630
70 SERIES SERVICE MANUAL 2007 HOME & COMMERCIAL
FOR TECHNICAL ASSISTANCE CALL 1-800-LANDICE
Part number 72078
TABLE OF CONTENTS Reimbursement Policy Parts and Warranty Policy Landice Service Authorization (SA) form Proration Information Recommended Tools Electrical requirements Tracking & tensioning Treadmill Maintenance Treadmill Dimensions & Weight Definitions Testing Components McMillan drive motor brush replacement McMillan speed sensor replacement Parts removal Elevation Motor installation Elevation calibration Common problems Noise problems Control Panel & Features Diagnostic features access Feedback test Membrane bypass test Error code definition Self-diagnostic error definitions Anta/PWM wire schematic Anta/PWM OLS mode Anta/PWM flowchart SCR Generation 1 Lower Schematic SCR Gen. 1 flowchart SCR Generation 2 LED Configuration SCR Gen. 2 lower schematic SCR wire harness schematic Diagnostic Flow Chart – SCR 2 ESI PWM LED Configurations ESI PWM lower wiring schematic PWM wire harness schematic ESI PWM flow chart PWM 2 (ANTA) wire schematic PWM 2 (ANTA) Flowchart RTM-REV wiring schematic RTM-REV lower board diagram RTM-REV flowchart RTM-REV pot calibration Landice Vision System Med rail installs Explosion Parts List
4 5 6 7 8 9 10 13 15 18 20 23 24 25 28 29 30 33 37 40 41 42 43 44 45 46 47 51 55 59 61 62 63 67 69 70 71 75 76 80 81 82 86 87 91 92 98
SERVICE REIMBURSEMENT POLICY: This is offered to all Landice dealers as well as all authorized Landice service providers. Landice covers our treadmills with a 1-year labor reimbursement policy. That means we will pay to fix our treadmill as long as it’s within one year from the date the treadmill was purchased. OUR POLICY: Landice will reimburse the selling dealer according to our labor rate schedule. If you are a service provider for Landice and do not sell our product, you have the option of billing us direct or you can bill the dealer that you’re providing service for. Generally, if our capped rate does not cover your labor charge you would bill the selling dealer. The current rate is $30.00 per hour and is capped at a maximum of one hour labor and one hour travel per treadmill failure. Diagnostic and return trips are not covered. Note that treadbelt tracking, treadbelt / drive belt tensioning, blown fuses, and setup procedures are not covered by this warranty. Set-Up Includes: Assembly, adjusting treadbelt and drive belt (if needed), walking the treadbelt and deck wax in, and performing any additional adjustments that may have been upset during shipping. The dealer must call for a Service Authorization (SA) number prior to performing any service to verify the treadmill is under labor warranty. It is advisable to call Landice from the treadmill location to successfully diagnose the problem. This will insure that the correct part will be shipped out the first time. Labor claim forms must be submitted within three months from the date service was performed. Labor claim forms must be completely filled out and have the Landice Service Authorization number at the top. Generally service claims are paid out upon the return of defective parts and/or crediting of the warranty invoice. If parts are outstanding for a period of more than 90 days previously submitted service claims will be returned unpaid. FLOOR MODELS AND DEALER STOCK If the dealer sells a treadmill to a customer within one year of its purchase from Landice, the warranty period will be extended to start from the date of sale to the customer. If a home treadmill is over 1 year old when sold to a customer, the treadmill will carry a 5 year parts warranty and there will be NO labor warranty. If a commercial unit is over 1 year old when sold to a customer, the treadmill will carry the remainder of the parts warranty from the date of shipment with NO labor warranty.
5 PARTS POLICY
Landice Treadmills reserves the right to request the return of any part regardless of age. A prepaid Return Tag will be provided at Landice’s discretion. All warranty parts requested to be returned will be billed to the dealer at dealer cost. Landice will credit this invoice upon receipt of defective parts. It is the dealer's responsibility to return the defective parts to Landice with a copy of the invoice or packing slip. If the defective parts are not returned within 30 days, payment of invoice is expected in full. WARRANTY PART ORDERING: When ordering parts under warranty please have the following information available. Warranty orders cannot be processed without this information: 1) Customer's name, address and phone number 2) Treadmill serial number 3) Detailed description of failure PURCHASE PART ORDERING: Serial numbers are recommended to help ensure the correct part is shipped. Purchased parts are covered by a 90 day replacement part warranty from the date the order shipped.
111 Canfield Avenue • Randolph, New Jersey 07869 • 1-800-LANDICE • FAX 973-927-0630 SERVICE CLAIM FORM SA# DEALER INFORMATION: Service Dealer / Dealer Name: Address City Phone( Contact
CUSTOMER INFORMATION Name Address City Phone( ) TREADMILL INFORMATION Model Type: Frame Serial # DCP Serial # (if applicable) Out of box problem Yes
Date of Service Date of Purchase No
SERVICES PERFORMED/PARTS REPLACED
TRAVEL / LABOR: Travel Time:
TOTAL TIME: _________
VALIDATION SIGNATURES Service Rep. Signature
CLAIMS CAN BE MAILED, EMAILED, FAXED OR SENT IN WITH THE RETURNED DEFECTIVE PART. DO NOT SUBMIT SERVICE CLAIMS WITHOUT SERVICE AUTHORIZATION NUMBERS.
The pro-rate scale applies to wear items only on commercial treadmills. Pro-rated items include: o Drive belt o Motor brushes o Deck o Walking belt. LTD models sold after August 1, 2002 and Club models sold after January 1, 2003 are pro-rated under the 5 year scale. Wear items will get covered under full warranty for the first 6 months of ownership if they fail due to wear. Discounts will be off of Dealer cost and the Dealer is expected to pass the same discount off of retail price on to the end user Wear items are pro-rated as follows: Up to 6 months 6-12 months Year 2 Year 3 Year 4 Year 5
No Charge 80% Discount 60% Discount 50% Discount 40% Discount 30% Discount
RECOMMENDED TOOLS FOR SERVICING LANDICE TREADMILL Deep socket set 3/8 drive with ratchet and extension: Must have 3/8, 7/16, 1 /2, 5/16, 9/16 sockets. Combination wrench set: Must have 3/8, 7/16, 1 /2, 5/16, 9/16 #1, 2, and 3 Philips head screwdriver (or electric screwdriver) #1, 2, and 3 flat head screwdriver (or electric screwdriver) Socket head cap screw wrench set/ multi Allen Wrench Rubber mallet Diagonal cutter/ dykes Wire stripper Wire crimper Digital voltmeter Note: Analog voltmeters are not recommended. Utility knife Pulse simulator tester AC Amp Meter
ELECTRICAL REQUIREMENTS FOR L-SERIES TREADMILLS 220 VAC CLUB TREADMILL
220V CLUB ELECTRICAL REQUIREMENTS: 220VAC , 60 Hz , 15 AMP - DEDICATED CIRCUIT & GROUND PLUG - NEMA 6-15P (PLUG) RECEPTACLE - NEMA 6-15R (RECEPTACLE) ABOVE IS DIAGRAM OF PLUG CONFIGURATION.
110 VAC HOME, LTD, & CLUB TREADMILL
HOME, LTD, & 110V CLUB ELECTRICAL REQUIREMENTS: 110 VAC, 60 Hz, 15 AMP - DEDICATED CIRCUIT & GROUND PLUG - NEMA 5-15P (PLUG) RECEPTACLE - NEMA 5-15R (RECEPTACLE) ABOVE IS DIAGRAM OF PLUG CONFIGURATION FOR 220V & 110V MACHINES USING 3 PHASE VOLTAGE: Each treadmill must have its own circuit breaker and be run on the same phase same power leg). If 220v power is required then all treadmills must run on the same two phases (power legs) and on their own circuit breakers.
TRACKING AND TENSIONING Proper tensioning of the Treadbelt and Drive Belt are necessary to insure smooth operation and long life for your treadmill. As these components may stretch as part of their normal break in period it is one of the few things we ask our customers to do in maintenance of their treadmills. The following illustrates how to tension the Treadbelt and Drive Belt. Check Drive Belt tension
Drive Belts are pretension before the treadmill leaves the factory. Adjustments are ONLY necessary when Drive Belt is slipping during use. If the belt needs to be adjusted use a 7/16” socket and turn the bolt underneath the motor pan attached to the hook screw.
To test for tightness: 1. Remove motor cover. 2. With mill running at 2mph walk on treadbelt. 3. If Drive Belt is moving front roller with no slippage then drive belt is correctly tensioned. Tighten belt only until it stops slipping to insure maximum drive motor and roller life. As a starting point check the tension on the Drive Belt by placing the Drive Belt between your thumb and forefinger and twisting. The proper twist is 45°. CAUTION: NEVER OVER TENSION THE DRIVE BELT. TIGHTEN ONLY TILL SLIPPING STOPS. OVER TIGHTENING MAY CAUSE SERIOUS DAMAGE TO THE DRIVE MOTOR AND WILL VOID THE MOTOR’S WARRANTY.
TREADBELT TENSIONING Treadbelts are tensioned at the factory and normally need no adjustment. To determine if the treadbelt needs to be adjusted perform the following test: 1. Remove motor cover. 2. Set treadmill speed to 2mph. 3. Walk on treadbelt and see if drive roller is turning but belt is not moving. If belt is not moving then tension treadbelt ONLY until belt ceases to slip. The same adjustment bolts used for tracking TENSION the Treadbelt. To tighten Treadbelt, turn both adjustment bolts (clockwise) exactly the same amount. Failure to turn them equally will affect belt tracking. You are moving the Take-Up Roller closer or further away from the deck to tension the Treadbelt. DO NOT OVER TIGHTEN TREADBELT! If you can't reach the palm of your hand under the center of the Treadbelt, if the edges of the belt are curled up, or if you hear the belt “groaning” THE TREADBELT IS TOO TIGHT. TREADBELT TRACKING The Treadbelt is TRACKED by means of two adjustment bolts (9/16" wrench) located at rear of treadmill. By tightening the side the belt is closest to and loosening the opposite side by the same amount, you change the alignment of the rear roller without changing overall tension. Adjustments should be made with treadmill running, and should be made in 1/4-turn increments. Allow at least 30 seconds for treadbelt to stabilize between each adjustment. Perform the adjustments at slower speeds (2-3 mph) until you are comfortable making adjustments. Faster speeds will cause the adjustments to take effect quicker (5-6 mph). Example: Treadbelt tracks to the right: a. Turn treadmill on, and bring speed up to 2.0 mph. b. Using a 9/16" wrench, tighten the right-hand adjustment bolt 1/4" turn. c. Loosen the left-hand adjustment bolt 1/4" turn. d. Let Treadbelt stabilize (rotate for 30 seconds) and readjust if necessary. *If normal tracking procedures are not working satisfactorily, proceed with the following steps: MAKE SURE TREADMILL IS LEVEL! Make sure the treadmill is completely level. Place a carpenter's level across rear frame rails running parallel with rear roller. VERY IMPORTANT: Must have a minimum of 150 pounds on the treadmill’s side steps for the reading to be accurate. If not level, try to move treadmill to more level flooring. If that is not an option use leveling shims. You can either put something under the rear feet or install shims between the rear foot and the frame. Simply loosen the two Philips head screws and slide shim in place. Tighten screw and re-check that the treadmill is level.
DRIVE ROLLER ALIGNMENT: The Drive Roller is preset at the factory. However, if the Treadbelt is centered at the Rear Roller but is off center in the front, an adjustment will need to be made. This problem often appears as the belt is running diagonally (closer to one side at the top but farther away at the bottom). The Drive Roller is secured to the frame with two hex head bolts. (3/8 wrench) The holes in the frame are elongated; this allows for forward and aft adjustment of the drive roller. Example: Treadbelt is tracking to the right hand side. Adjust right hand side of drive roller by moving it towards the front (motor side) of treadmill. The Treadbelt will move towards the center.
Recommended Maintenance Home Models- Vacuum around and underneath the treadmill on a monthly basis. Vacuum or wipe down the deck area between the treadbelt and frame. Wipe down display using mild solution of Non-Phosphate cleaner on damp soft cotton cloth and handrails after every use. No other maintenance is required. Commercial ModelsOnce a week 1. Wipe down display. Use mild solution of Non-Phosphate cleaner on damp soft cotton cloth. Once a week or as needed. 2. Wipe down handrails and traction strips with soft cotton cloth and mild soap and water. Cloth should be damp not wet. Once a week or as needed. 3. Vacuum or wipe down the Deck area between treadbelt and frame. Once a week. Once a Month 1. Take off Motor cover and vacuum. 2. Slide clean towel under Treadbelt and wipe deck and under the belt. Rotate belt 180 degrees and repeat. 3. Apply Slipcoat, the only lubricant recommended by Landice, under the Treadbelt if it feels dry (non oily). 4. Check Drive Belt Tension 5. Check Treadbelt Tension and Tracking Every Six Months 1. Check Motor Brushes for wear. Clean commutator if needed. Cleaning Treadbelt Walking Surface- Treadbelts should be vacuumed to remove loose dirt. If vacuuming doesn’t remove dirt, we recommend the use of a medium stiff nylon bristle brush to remove dirt trapped in treadbelt surface. A damp (not wet!) sponge can be used to finish the cleaning process.
Commercial Treadmill Maintenance Checklist
Check treadbelt tension and tracking Wipe underneath treadbelt Check drive belt tension Check motor brushes Use cleaning stone to clean commutator Vacuum under motor hood Vacuum around and under treadmill Lubricate deck with slipcoat if needed Wipe down display with soft cotton & mild soap and water.
Treadmill Dimensions (boxed) L x W x H (as loaded in trailer)
Weight 350 lbs
Weight 435 lbs
Weight 460 lbs
no box or pallet
Weight 290 lbs
no box or pallet
Weight 330 lbs
no box or pallet
Weight 335 lbs
770 SERIES FACTS:
Treadbelt Dimension Width: 20 inches Length 58 inches Circumference: 122 inches Deck Dimension 1 inch thick wood Phenolic layer – Reversible Width: 52.2 inches Length: 24 1/2 inches L760: Production Date for Frames: July 17, 2003 Starting serial number for Frames: L7-31084 Production Date complete L760 series: October 2, 2003 Starting serial number for complete L760 series: L7-32002 *NOTE: Some L750 series treadmills were manufactured after the date and serial number unit January 1, 2004. L770: Production Date: November 11, 2006 Starting serial number: L7-64947 *NOTE: Some L760 series treadmills were manufactured after the date and serial number. The L760’s and L770’s series decks are interchangeable The L760’s and L770’s series walking belts are interchangeable.
870/970 SERIES FACTS: (All components are the same for the L8 and L9, except for the L9’s larger feet)
Treadbelt Dimension: Length: 63 inches Width: 21.5 inches Total Circumference: 136 inches Deck Dimension: 1 inch thick wood Phenolic layer – Reversible Length: 56 inches Width: 25 inches L8622: Production Date: September 24, 2004 Starting serial number for the treadmill: L8-10380 L9622: Production Date: September 24, 2004 Starting serial number for the treadmill L9-03329 L870: Production Date: November 10, 2006 Starting Serial number for the treadmill: L8-14596 L970: Production Date November 3, 2006 Starting Serial number for the treadmill L9-5020 *NOTE: Some L8622 series treadmills were manufactured after the date and serial number. The L8622’s and L870’s series decks are interchangeable The L8622’s and L870’s series walking belts are interchangeable. The L8622’s and L870’s series drive and rear rollers are interchangeable. L850’s & L860‘s front and rear rollers are different from current production rollers.
DEFINITIONS OF COMPONENTS ANTA PWM COMBO BOARD: This Control Board is a combination of the PWM (Pulse Width Modulation), relay board, and DC Transformer. This is also known as a combo board and used in home setting. Delivers power to the upper board, elevation motor, and drive motor.
CAPACITOR Stores energy to smooth out voltage to Drive Motor. Used with SCR Motor Control Boards . CHOKE (Inductor) Acts like a filter to smooth out voltage to Drive Motor. Used with SCR Motor Control Boards. DCP (DISPLAY CONTROL PACKAGE) Package containing all of the components relative to the Upper Display Console. This includes the membrane/faceplate, upper display board, & wire harness. DCP’s also include owner’s manuals, warranty cards, and cardio pulse transmitter strap (if applicable). DCP’s are for HOME TREADMILLS ONLY and are rarely a warranty part.
DIAGNOSTIC MODE The test mode that allows access button feedback, potentiometer calibration, speed control (PST, CT, & ET), total hours and miles, and pulse reading. DRIVE BELT This connects the Drive Motor to Sheave (Pulley) on Drive Roller. DRIVE MOTOR Provides power to Drive Belt to turn Pulley on Drive Roller to move Treadbelt. This gets its power from the PWM or SCR. Landice Drive Motors are either 110v for 220v.
DRIVE ROLLER W/ SHEAVE This is the Roller at the front of the Treadmill. The Sheave (pulley) is pressed onto the roller and allows transfer of movement from Drive Belt to Treadbelt.
ELEVATION LEG ASSEMBLY Connects to Elevation Motor to allow movement of front of treadmill up or down.
ELEVATION MOTOR This motor works through the elevation leg assembly to raise or lower the front of the treadmill. It gets its power from the Combo Board on Home models and from the SCR on LTD and Club models.
ELEVATION POTENTIOMETER Attaches to Elevation Motor and gives feedback to Upper Display as to what incline the treadmill is at. Needs to be calibrated whenever elevation motor is replaced. A Potentiometer should be checked whenever there is a problem with elevation or when the Error Code “PO” comes up.
ESI PWM COMBO BOARD This Control Board is a combination of the PWM (Pulse Width Modulation), relay board, and DC Transformer. This is also known as a combo board and used in home setting. Delivers power to the upper board, elevation motor, and drive motor.
FACEPLATE This overlay is found on our Sports Trainer and RTM models and is screwed onto the Upper Display Board.
19 FRAMES (SIDE) One on either side, these connect with the Deck Slats to form the frame of the machine. FRAME COVERS (SIDE) These sit on top of the Frame Rails and keep Deck in place. They also form the base for the Traction Strip. IR POTENTIOMETER The IR Pot is located on the Combo Control Board and is used to adjust the time it takes the PWM to react to a load or amperage spike. It normally requires adjustment if the motor feels like it’s surging or lacking torque. MEMBRANE PANEL This takes information from the display membrane keys and transmits it to Upper Display Board via the ribbon cable. It is found on the PST3, CT2, and ET2 models.
OPEN LOOP SPEED (O.L.S.) MODE The test mode which remove the speed sensor from equation of running treadmill. This mode will give access to speed feedback and control the speed of the treadmill on a running unit. NOTE: RTM & ST has a separate command for entering into O.L.S. SAFETY LANYARD This is a safety feature that completes a switch in the Display Board. If it is not connected the treadmill will display a “SAFE” message. Works with the stud and flux guide. SCR (Silicon Controlled Rectifier) Control Boards-Used in LTD (110v) and Club Models (220v) This circuit board is designed to run the drive motor, elevation relays, the belt relay, DC transformer for power to Upper Display Board, and on board diagnostic lights. The SCR requires a Capacitor and Choke to provide “clean” power to the Drive Motor SPEED SENSOR Landice uses a magnetic speed sensor (Baldor motors) or optical speed sensor (McMillan Motors) to receive accurate speed readings. Readings are taken directly from the flywheel on the motor and sent to the Combo Board or SCR. TAKE UP ROLLER This is the Roller at the rear of the treadmill. It completes the loop for Treadbelt movement and allows tracking and tension adjustment of Treadbelt. TREADBELT This is the surface the user walks on. It rides over the deck and rollers. UPPER DISPLAY BOARD This controls information from the Membrane panel or Faceplate. It then transmits it to the Combo board on Home models and the SCR on Club or LTD models. UPRIGHTS One on either side, these hold the wire harness, the upper display, the cross member, and the handrails.
UPPER WIRE HARNESS Transmits data from lower electronics to upper electronics.
VFX SYSTEM Shock-absorbing Deck. Consists of wood Deck, VFX Deck Post, Deck Spacer, Deck Load Washer, Deck Felt Washer, and Deck Impact Absorber.
TESTING COMPONENTS MOTOR COMPONENTS DRIVE MOTOR:
Generation Test – all Landice drive motors (110 & 220) are direct current or DC. A DC drive motor can produce (generate) a DC voltage when it’s manually rotated. The DC output is linear to the speed the motor is rotated. To perform the “Generation Test” follow these steps: 1. Un-plug treadmill from wall outlet. 2. Disconnect drive motor from motor control board. 3. Connect DMM (Digital Multi-Meter) to the drive motor wires. Note: Your DMM should be set on Volts DC (VDC) Motor plus (+) = Red test lead from DMM Motor minus(-) = Black test lead DMM 4. Position your DMM so you can read it while standing on the treadbelt. 5. Start to push / run on the treadbelt. Note: You are spinning the drive motor manually. The faster you spin the motor, the higher the output of DC voltage will register on your DMM.
110 VAC treadmills use a 90 VDC drive motor. For every mile per hour you spin the drive motor you will generate approximately 10 VDC output. So, at 1 mph you will measure 10VDC +/- and at 9mph you will measure 90VDC +/-. 220 VAC treadmills use a 180 VDC drive motor (double the input voltage, double the size of the drive motor). For every mile per hour (mph) you spin the drive motor you will generate approximately 20 VDC output. So, at 1.0mph you will measure 20 VDC +/- and at 9.0mph you will measure 180 VDC +/-. If you measure very low DC voltage or zero DC voltage, first check the drive motor brushes for condition. Motor brushes are the leading cause for drive motor failure. If the motor brushes are worn below 3/8” in length, replace them. (90VDC Motor Brush part#70222, 180 VDC Motor Brush part#70223) Alternate Test 1: Attach 9 or 12 volt battery to motor leads. There should be motor movement. Alternate Test 2: Unplug Treadmill. Disconnect Drive Motor wires. Disconnect Drive Belt. Hold black and white wires together. Spin flywheel. There should be resistance when wires are connected. ELEVATION MOTOR Using your voltmeter measure the input voltage (AC) to the elevation motor. Secure the black (negative) meter probe to a good chassis ground. Place the red meter probe on the RED wire in the elevation harness. Press the elevation DOWN key and you should get 120 /220VAC. Place the red meter probe on the BLACK wire in the elevation harness. Press the elevation UP key and you should get 120/220VAC. If the elevation motor is getting the proper AC voltage in but does not turn, replace it.
ELEVATION POTENTIOMETER Remove the elevation pot from elevation motor but do not disconnect the brown, orange and blue wires. Using a digital voltmeter set to ohms (Ω), place meter probes on the pot prongs with the (orange) and (brown) wires. You are measuring resistance so you do not need to observe polarity. - Turn pot shaft completely clockwise (0-1000Ω). - Turn pot shaft completely counterclockwise (1000-0Ω). Now place meter probes on prongs (orange) and (blue) wires. - Turn shaft of the potentiometer completely clockwise (1000-0Ω). - Turn pot shaft completely counterclockwise (0-1000Ω) If the elevation potentiometer does not indicate the proper resistance readings, it is must be replaced. Note: Potentiometer should fit snugly into motor. Check for tight fit. Also check that nut on Potentiometer is tight. MOTOR CONTROL COMPONENTS PWM MOTOR CONTROL The PWM board runs on AC voltage. The AC voltage is delivered to the PWM board across two input terminals marked L1 and L2. Confirm AC voltage into the PWM by measuring across these terminals with your voltmeter. You should measure 120/220VAC input. The DC voltage comes out of the PWM board (going to the drive motor) across two output terminals marked A+ and A-. Power up treadmill in Open Loop Speed OLS mode and bring to maximum speed. Confirm DC voltage out by measuring across these two terminals with your voltmeter. You should measure 90/180VDC output. If the PWM board is getting the proper AC voltage in but does not supply any DC voltage out, it must be replaced. (This holds true as long as proper speed reference voltage is being supplied from relay board to PWM across the V+, P1, & P2 terminals. SEE PAGE 45) SCR MOTOR CONTROL The SCR board runs on AC voltage. The AC voltage is delivered to the SCR board across two input terminals marked HOT and NEUT. Power up treadmill in Open Loop Speed (OLS) mode (see Page 56) and bring displayed speed to the max. Confirm AC voltage into the SCR board by measuring across these terminals with your voltmeter. You should measure 120/220VAC across these terminals. The DC voltage comes out of the SCR board (going to the drive motor) across two output terminals marked MTR+ and MTR-. Confirm DC voltage out by measuring across these two terminals with your voltmeter. You should measure 90/180VDC output. If the SCR board is getting the proper AC voltage in but does not supply any DC voltage out, it must be replaced.
SPEED SENSOR The speed sensor can be checked for proper operation by entering the Open Loop Speed (OLS) Mode. (See page 39) There is a yellow SPD LED mounted to either the relay board (HOME PWM models) or the SCR board (LTD and CLUB models). The light will flash ON and OFF when you rotate the drive motor flywheel slowly by hand. This indicates the proper operation of the speed sensor. If you do not get this flashing to occur, then check for proper speed sensor alignment (only on Baldor motors). If this does not help, replace the speed sensor. DISPLAY COMPONENTS UPPER DISPLAY BOARD The upper display board is powered by DC voltage. On HOME treadmills this DC voltage is supplied by the DC power supply. On LTD/CLUB treadmills the SCR board supplies this DC voltage. Confirm the upper display is getting DC voltage delivered to it. If the display board has the proper DC voltage supplied and does not light, it must be replaced. FACEPLATE The faceplate has no mechanical or electrical components that can fail. However, if you press a key and it fails to respond check for proper display board spacing. The faceplate is designed as a passive panel. When the user presses a key (pushes through the faceplate) they activate a switch mounted on the upper display board. If the display board to face plate distance is too great, the display board switch will not be fully activated and result in a dead response. Small washers are placed between the display board and mounting studs to adjust this distance. This is performed at the factory but can be upset if disassembled in the field. MEMBRANE PANEL The membrane panel has small micro switches laminated inside that transmit the user’s commands into treadmill functions. Enter “Diagnostic Mode” to confirm proper operation of the membrane panel. In this test mode you will be able to check each key on the membrane panel. By pressing a key, you will hear an audible beep and also see a numeric code appear in the speed window. There is a numeric code assigned to each key on the panel (except the OFF key). For a complete list of these codes, see the chart on opposite page. If you do not hear a “BEEP” or see the proper code appear the key is bad and the membrane panel must be replaced.
McMillan Drive Motor Brush Replacement & Commutator Inspection Instructions. Drive Motor brush inspection and maintenance is important especially for LTD or Commercial Machines. If motor brushes get worn down too low, it is possible it will harm the drive motor as well. Here are simple instructions on how to remove/inspect/replace motor brushes as well as inspect the commutator on our McMillan Drive Motors.
Remove the cap with a flat head screwdriver.
This exposes the brush holder and brush
Take a needle nose pliers and use them to remove the motor brush wires from the connector
Press down on the metal spring, slide the motor brush holder and take the clip out.
A good motor brush will be shiny. Free from scorch marks, chips, and not dull where the commutator would make contact.
The commutator is copper color and shiny. Cleaning the commutator with a cleaning stone or piece of emery cloth may remove the dull appearance & black scorch marks.
STEP 7 :
Connect the motor brush to the terminal using the needle pliers.
Insert the motor brush back Inside the brush holder.
After the motor brush is seated back in and secured down, just pop the cover back on and repeat these instructions for the other side.
McMillan SPEED SENSOR REPLACMENT TOOLS REQUIRED ½ INCH SOCKET WRENCH 7/16 & ¼ INCH SOCKET STRAIGHT EDGE SCREWDRIVER
INSTRUCTIONS 1) Loosen & Remove the two 7/16 nuts holding the plastic cover located on the back of the drive motor.
2) Remove the plastic cover from the drive motor. 3) Loosen & remove the ¼ inch set screw holding the black round speed wheel. 4) Remove the speed wheel. 5) Remove the speed sensor by using a screwdriver and carefully prying the
clips holding the sensor. 6) To install the new sensor just line up the sensor with the alignment pole on the plastic mount on the drive motor to the sensor alignment hole and push the sensor on the clip. 7) After installing the speed sensor, follow steps 1 thru 4 in the reverse order to reassemble.
REMOVAL AND REPLACEMENT OF COMPONENTS 1. Before beginning any removal or replacement of components unplug power cord from wall. 2. Make a note of serial number, model (L7, L8, Home, LTD, or Club) and type (Sport, Pro, Cardio, CRT, or Executive). Landice tracks all information from this serial number and it must be given when requesting parts or technical assistance. 3. Always remove one component at a time to test for problems and to simplify replacement. POWER CORD (LINE CORD) 1. Unplug from wall. Remove motor cover screws and motor cover. Follow cord to where it enters frame. Remove screw holding Green wire to frame and remove Green wire. Remove Blue wire and Brown wire from motor control board. Remove old cord. Remove strain relief (have a spare in case it’s damaged in removal). Push new cord through motor pan. Replace green ground wire to frame and Blue (Neutral) and Brown (Hot) wire to motor control board. ANTA/PWM or MOTOR CONTROL BOARD (MCB) – Cut plastic wire ties as needed but remember to replace them when done! 1. Disconnect the line cord from the HOT and NEUT terminal. 2. Remove the speed sensor connector and upper harness connector 3. Remove White wire from A-. This wire connects MCB to Drive Motor. 4. Remove Black wire from A+. This wire connects MCB to Drive Motor. 5. Remove four screws attaching board to frame and remove MCB. 6. Reverse to install new MCB. SCR Generation 1 – LTD and Club ONLY 1. Remove Clip with Blue, Orange, Brown, Red, Black, and White wires. These wires connect SCR to Elevation Motor. 2. Remove Clip with Red, Green, and Black wires. These wires connect SCR to Speed Sensor on Drive Motor. 3. Remove Black and White wires from connections marked MTR. These connect SCR to Drive Motor. 4. Remove Red wire. This connects SCR to Choke. 5. Remove Green wire. This connects SCR to Ground on Frame. 6. Remove Black wire. This connects SCR to Capacitor. 7. Remove White wire. This connects SCR to Capacitor. 8. Remove Clip with Green and Black wires. This SCR to Upper Display. 9. Remove Clip with Red, Blue, White, and Orange wires. This connects SCR to Control Panel. 10. Reverse to install.
CHOKE- LTD and Club ONLY 1. Remove Red wire. This connects Choke to SCR. 2. Remove Purple wire. This connects Choke to SCR. 3. Reverse to install. CAPACITOR- LTD and Club ONLY 1. Remove White wire. This connects Capacitor to SCR. 2. Remove Black wire. This connects Capacitor to SCR. 3. Remove Purple wire. This connects Capacitor to Choke. 4. Remove Resistor. This connects both Poles of the Capacitor. 5. Reverse to install. UPPER DISPLAY BOARD 1. Remove screws from control end caps upright on either side of display. 2. Remove Caps from Display. 3. Display is attached to upright with Velcro. Pull from top of display to remove. 4. Remove Membrane from Display. 5. Disconnect main wire harness clip. (See Diagram below) IMPORTANT: Remove the display board from the membrane BEFORE removing the wire harness from the defective display board. Please review the following to prevent breaking the connector: The wire harness locks into place on the display board. Press firmly down on the clip to unlock and slowly move the harness side to side until it is disconnected from the display board.
Press Down Here
6. Reverse to install.
MEMBRANE PANEL 1. Remove screws from control end caps on either side of Display panel. 2. Remove Caps from Display panel. 3. Display is attached to upright with Velcro. Pull from top of Display panel to remove. 4. Disconnect main wire harness clip. 5. Lay display on a clean towel on a workbench and carefully remove Display Board from Membrane panel. 6. Reverse to install. FACEPLATE (Replaces Membrane Panel on Sport Trainer and Pro Sports Trainer Models) 1. Remove screws from control endcaps on either side of Faceplate. 2. Remove Caps from Faceplate. 3. Faceplate is attached to upright with Velcro. Pull from Top to remove. 4. Disconnect main wire harness clip. 5. Lay Faceplate on clean towel on workbench and carefully remove display board. 6. Reverse to install. DRIVE MOTOR 1. Elevate treadmill to 15%. Unplug power cord. 2. Remove motor cover screws (4) 3. Disconnect white, green, and black wires from MCB. 4. If applicable remove green ground wire from frame. 5. Remove drive belt tension adjustment bolt by removing nut. Nut is located on bottom of motor pan. Note: See section on Tracking and Tensioning 6. Remove drive belt from motor. 7. Locate Drive Motor hitch pins on bottom of motor pan. Remove hitch pins using needle nose pliers. Note: When reinstalling hitch pins make sure to crimp ends to insure positive locking. 8. Remove Motor Spacers: The rubber and metal spacers mounted between the motor mount and the motor pan are arranged in a specific manner. The reason for this is to reduce vibration. If your standing on the treadmill, the following arrangement applies: On the right side you will have (0) spacers on top of pan and (1) rubber, (1) metal followed by (1) retaining clip on bottom. On the left side you will have (1) metal spacer on top of the pan and (1) rubber on the bottom followed by (1) retaining clip. 9. Remove Drive motor. Be sure not to lose metal spacer from under right side. 10. When re installing make sure to properly position foam block under motor. 11. Reverse to install BALDOR DRIVE MOTOR BRUSHES 1. Unplug Treadmill. 2. Remove Motor Brush caps (2) with large flat head screwdriver. 3. Remove Motor Brushes and inspect. They should be replaced if 1/4 inch or less. Inspect motor commutator for wear (Black-scoring present on copper segments) Try to dress out (clean up) commutator with a commutator stone or emery cloth.
4. When you reinstall motor brushes make sure the brush does not bind up in its holder. The motor brush must move freely the full length with zero resistance. If resistance is present you must carefully dress out the brush until the correct tolerance is achieved. ELEVATION MOTOR 1. Remove Elevation Motor. A. Remove all weight from the elevation assembly by placing a suitably strong object under the under motor pan (many technicians use their toolbox) so that the wheels are in the air. B. Disconnect Elevation Motor wires. (Step 2F) C. Disconnect the Elevation Motor nut from the elevation assembly. To do this, loosen the two (2) ¼-20 screws and slide the two (2) ¼” dia. pins out. (Step 1C) D. Remove the 3/8” dia. Elevation Motor mounting pin from the Clevis mount. (Step 1D) E. Remove Elevation Motor. 2. Install new Elevation Motor. A. Remove your toolbox and set the treadmill on the ground. B. Align the Elevation Motor with the Clevis mount and install the 3/8” diameter mounting pin. Insert the hitch pin. C. Reconnect the Elevation Motor wires. D. Enter diagnostic mode. (See page 56.) Press the UP key briefly and then hold the DOWN key until the motor stops. NOTE: This process sets the elevation lower limit switch and MUST be done to obtain maximum elevation range. E. Hold the ¾” dia. elevation screw to prevent it from turning and turn the elevation nut to line it up with the holes on the elevation assembly (or just short of them). *** NOTE-L7 & L8 elevation nut setting must be flush as insert to the elevation shaft. L9 nut setting must rotates 8 full turns. Slide the two (2) ¼” dia. pins through the elevation assembly and into the elevation nut, then secure the pins with the two (2) ¼-20 screws. Proceed with the instructions on the next page for calibrating the potentiometer.
½ gap inch
770 SERIES ELEVATION CALIBRATION E L E V A TIO N P O TE N TIO M E TE R P /N # 7 1 0 1 3
E L E V A TIO N M O TO R P /N # 7 0 0 8 8 1 1 0 vo lt P /N # 7 0 1 2 6 2 2 0 vo lt
A D J U S TM E N T SHAFT E L E V A TIO N N U T
N O TE : E L O N G A TE D B R A C K E T H O L E S A R E F O R P O TE N T IO M E TE R F IN E A D J U S TM E N T.
D IAG N O S TIC M O D E : E x ecu tive Train e r 2 : M E N U & S T A R T sim u ltan eo u sly C ard io Train er 2 : N E X T & S T A R T sim u ltan eo u sly P ro S p o rt Train er 3 : N E X T & S T A R T sim u ltan eo u sly S p o rt Train e r 2 /R e h ab ilitatio n T read m ill: D IS P L A Y & S T A R T sim u ltan eo u sly C alib rate th e ele vatio n p o ten tio m e ter: 1. V isually co nfirm trea dm ill is level. P ress dow n arrow for e levation till m achine is level. 2. T he p o te ntiom eter s ho uld re a d 0 .1 for a ll m o d e ls. N O T E : E le va tion w indo w s h o w s a ctua l e le va tion. D isplay sho w s pote ntio m e ter setting. 3. If the setting is incorrect, follo w the step s be lo w . S TE P 1 : T urn the post of the pote ntiom ete r all the w ay C L O C K W IS E S TE P 2 : S low ly turn the pote n tiom eter C O U N TE R C L O C K W IS E u ntil the setting is correct. (N O TE : If the setting s eem s stuck at 25.5 c heck tha t p o t w ires a re sea te d in the correct order a nd that upper w ire harn ess co nne ction is seated tightly.) 4. C arefully install potentiom eter into the m otor ho using. *N O T E : Th e se ttin g m a y vary w h en in se rtin g th e p o ten tio m e ter in to th e m o to r. A s lo n g as th e ch an g e is m in im al, fin e ad ju stm en t can ach ie ved after th e p o ten tio m e ter is s ec u red in to th e m o to r h o u sin g . 5. P re ss O F F to turn tread m ill off.
COMMON PROBLEMS Symptom: Treadbelt feels like it’s slipping or grabbing when walked on. Possible Cause: Loose drive belt or treadbelt. Adjust as per manual. Remember to adjust only till slipping stops. DO NOT OVER TIGHTEN Possible Cause: Worn treadbelt and/or deck. If treadbelt or deck is worn it will cause excessive friction and the user will feel like belt is slipping or grabbing. 1. Reach hand under front of treadbelt and see if deck feels rough, grooved, or if you see bare wood. These are signs the belt needs to be replaced and the deck needs to be reversed or replaced if it has already been reversed. 2. Compare the outer edge of the treadbelt to the middle of the treadbelt. The outer edge wears less since the user walks near the center of the belt. You will be able to see the cross weave of fabric on a good treadbelt. This cross weave design traps air inside tiny pockets. The treadbelt glides on this trapped air. When a belt wears, the cross weave becomes flat and smooth. This is not good because there are no more pockets to catch the air. If the center of the treadbelt is smooth (glazed) and exhibits black streaks it’s time to replace. 3. If amp draw is high (8 amps or more on home) it is advisable to check belt and deck for wear. Tip: If Red Current Lamp is lit then Amp Draw is high. TREADBELTS AND DECK SURFACE SHOULD ALWAYS BE REPLACED TOGETHER IF EITHER IS WORN OUT.
Symptom: Treadmill slows down when user steps onto treadbelt. Possible Cause: Worn out treadbelt or deck. See above. Possible Cause: Worn or defective motor brushes and/or scorched commutator on drive motor. Dress out commutator and replace brushes. Possible Cause: Demagnetized stator magnets on drive motor. Make sure that treadmill is unplugged! Disconnect drive motor from lower circuit board. Hold the two motor wires, Black A+ and White A-, together and rotate the motor flywheel by hand. Get a good feel for the rotational friction of the drive motor. Then disconnect the two motor wires and rotate the drive motor by hand. If the drive motor begins to spin much easier, then your motor is not the problem. If you notice no difference, then replace the drive motor. NOTE: A good drive motor will spin freely with little friction when disconnected from the lower circuit board. If the two motor wires are connected together, the drive motor will become much harder to rotate. Also see: Component Testing –Drive Motor
Symptom: Treadbelt is moving diagonally. If a belt is moving diagonally on the treadmill it can be corrected with the following steps: 1. Loosen the take up roller (both sides) 2. Take off the motor cover. 3. Loosen the drive roller adjustment bolt on the right side (opposite the sheave pulley). 4. Using a large screw driver or pry bar move the drive roller forward if the belt is angled right to left or backward if it’s angled left to right. 5. Tighten drive roller until star washer bites into aluminum frame, start treadmill, and adjust tracking. If belt is straight then put on motor cover. If belt is still not straight, go to #6. 6. If there is improvement and there is still room to move drive roller adjustment bolt, continue to adjust until fixed. 7. If there is no more adjustment on right side adjustment bolt, go to left side adjustment bolt (make sure to loosen the drive belt via the drive belt tension adjustment bolt and retension when done). Landice has adjustment on the front roller to correct for this type of problem. The front roller will not be damaged by the adjustment providing these steps are followed. If this doesn’t correct problem please call 1-800-LANDICE.
Symptom: Treadmill speed is erratic and/or surges. Possible Cause: Defective drive motor See Component Testing -drive motor: Possible Cause: Loose drive belt or treadbelt. Check for proper drive belt and treadbelt tension. If one of these belts are not tight enough, they will slip and create a treadbelt skip or surge. This will usually be more apparent with heavier users. (See belt-tensioning procedures) Possible Cause: High drive motor current due to excessive treadbelt friction. Check for treadbelt and tread deck for wear. Check that Red Lamp marked Current is not on. Possible Cause: Worn or defective motor brushes and /or commutator. Check Motor brushes move freely in holder. Brushes should be at least ¼ inch long, approximately the same length, and free of cracks, splits, and fraying. Possible Cause: Line voltage surging. Use voltmeter, monitor line voltage supply. Make sure customer has the treadmill plugged into a circuit that meets our electrical requirements. (Home & LTD Treadmills = 120V / 15 amp dedicated circuit), (Club Treadmills = 220V / 15 amp dedicated circuit) NO extension cord should exceed 6 feet in length and must be 12Awg, same as linecord. NO surge suppressors or GFI outlets. Possible Cause: (PWM boards ONLY Home Mills) IR potentiometer out of adjustment. Adjust the IR “pot” on the lower motor control board until the surge subsides.
32 IR POTENTIOMETER ADJUSTMENTS, HOME TREADMILLS ONLY: IR = I (amperage) R (resistance)
The IR potentiometer that is located next to the MAX speed potentiometer on the PWM motor control board is used to adjust the time it takes the PWM to react to a load or amperage spike. When the user steps onto the treadbelt a load is introduced to the system which creates an amperage spike. The PWM board senses this amperage spike and reacts by feeding more power to the drive motor. This “more power” compensates the amperage spike (load) and the treadmill does not slow down. If the IR was adjusted to react slowly the user would notice a lag in belt movement when stepping onto the treadbelt. If the IR was adjusted to react too quickly the user would notice a quick surge when stepping onto the treadbelt. Either way, the treadmill will surge considerably when this occurs. There have also been isolated cases where the treadmill will surge without a user walking on it. When this occurs, the red light on the PWM (LED1) will flash in sequence with the belt surge. To adjust the IR potentiometer:
No load / belt surging / LED1 flashing = use a small screwdriver to rotate IR pot. Make this adjustment while the treadmill is running (surging). Rotate the pot in small increments until the treadmill surge subsides and runs smoothly. NOTE: the IR pot can be rotated Clockwise or Counter Clockwise to achieve smooth operation. With load / belt surging / LED1 may be flashing = use a small screwdriver to rotate IR pot. Make this adjustment while the user is walking on the treadmill. Rotate the pot in small increments until the treadmill surge subsides and runs smoothly. Keep speed setting under 2.0mph for safety. NOTE: the IR pot can be rotated CW or CCW to achieve smooth operation. Possible Cause: Damaged motor control board.
Disconnect the drive motor from the motor control board. Enter OLS (Open Loop Speed) mode and bring displayed speed to max. Measure with a voltmeter across the lower motor control board output terminals A+ and A-. Monitor the DC voltage on your meter. If the DC voltage is surging, the motor control board is defective. Replace the motor control board. Symptom: Display reads “SAFE” Possible Cause: Safety Lanyard is missing. Solution: Replace Safety Lanyard. Possible Cause: Flux guide is missing/out of position. Solution: Check flux guide for proper alignment. Possible Cause: Safety Leash is defective/missing from Upper Display board. Solution: Replace Safety leash. Possible Cause: Defective Display Board. Solution: Replace Display Board. Symptom: Speed shown is not actual speed. Possible Cause: Speed needs to be calibrated (Home treadmills only). Page 46 illustrates how to calibrate.
NOISES Many times a treadmill will tell you what’s wrong with it by the noises it makes. We strongly recommend the use of an automotive stethoscope. Service Tip: Treadmill making noise but can’t tell from where. Solution: Must isolate all moving parts. 1) Unplug treadmill. 2) Disconnect Drive Belt. 3) Turn treadmill on, listen for noise. a) If noise is not present proceed to next step. b) If noise is present, drive motor must be source. 4) *Reconnect the Drive Belt and loosen the Treadbelt completely. 5) Turn treadmill on, listen for noise. a) If noise is not present, Rear Roller must be source. (bearings) b) If noise is present, Drive Roller must be source. (bearings) 6) With Treadmill off, bounce or jog in place on Deck. If noise is present then deck or frame is making the noise. * The Treadbelt must be loose enough that when the treadmill is powered up the Treadbelt does not move. Rollers (Drive and Take up) Rollers only have two moving parts, i.e. the bearings located on either end of the roller. The place to check for noise is on the shaft coming out of the roller since it is close to the bearings and doesn’t move. Many technicians will hold the blade end of screwdriver onto the shaft and their ear next to the handle end to be sure they are identifying the location of the noise. The most common sound is a clicking that comes from a bearing that is no longer round. Other noises can be a rumbling (like rolling something around in a metal drum) and in worse cases a grinding metallic noise. Treadbelt noises Questions to ask: 1. Has the belt been broken in correctly? Treadbelts need to be walked on to have wax penetrate them. Starting at the back walk from side to side and up and down for at least 20-30 minutes to break in belt at a speed of 2 mph. 2. Is treadbelt tracked correctly? If belt is off to one side it may be rubbing, making noise. Track using bolts on rear roller. 3. Is treadbelt over-tightened? This is the most common cause of groaning type noises. First, loosen treadbelt and see if noise goes away. If noise goes away, tighten belt only until there is no slippage when walking. 4. Is belt rubbing on cross brace underneath treadmill? Sometimes these get bent during shipping. Bend back so belt will not rub.