ProII Service Manual SALES: 800-278-3933 CUSTOMER SERVICE: 800-745-1373 Revision: August 1999
Table of Contents Section Page I. Overview 2 II. Troubleshooting Tables 3 III. Maintenance Procedures IV. V.
I. Overview Purpose. This manual is designed to assist in service of SCIFIT ProII exercise machines. The manual is divided into sections to diagnose and isolate problems. Troubleshooting tables and procedures, along with drawings, are provided to aid technicians in servicing equipment. The Item Numbers given in the parts list in Section V can be used to determine the location of various parts in Figures 1 and 2.
II. Troubleshooting Tables Table 1 – Electrical Troubleshooting Problem 1.1 The machine appears to be off when plugged in and switched “on”. Possible Reasons Faulty power supply board (Item 92). Solutions If buttons on the control display beep when pressed, replace power supply board. See Procedure 1. Otherwise, check power supply board. See Procedure 2. Faulty fuse. Check and replace fuse if needed. (See Fig. 3) Loose cable connection. Check wire connections at power supply and display boards. 1.
1.7 The upper display (Item 2) resets after starting a program. Ribbon cable connection is loose (Item 6). Check cable connection at power supply and display boards (Items 92 and 2, respectively). Power cord is loose. Check and adjust as needed. Display board is faulty. Replace display board. Ribbon cable (Item 6) connection is loose. Check and adjust cable connection as needed. Display board (Item 2) is faulty. Replace display board. 1.9 Machine shuts down in programs but works in manual.
Table 2 – Mechanical Troubleshooting Problem 2.1 Poly-V belt (Item 74) is slipping. Possible Reasons Belt tension is not adjusted properly. Solutions See Procedure 5. 2.2 Excessive free play exists when the cranks are turned. The chain(s) is too loose. See Procedure 6. 2.3 Machine makes noise and feels rough when the hand cranks and pedals are turned. Bearings (Item 9) in handle (Item10) are faulty. Rotate hand cranks about the hand crank shaft (Item 13). Replace bearings if source of noise.
2.6 Handles and pedals lock up while operating. 2.7 No resistance on handles and pedals when in a program. 2.8 Very little resistance at any level. 6 Power supply board (Item 92) is faulty. Unplug power cord. If handles now move freely, replace power supply board. Brake (Item 73) is faulty. If handles and pedals do not move with power cord unplugged, replace brake. See Procedure 4. No speed signal Check and adjust the speed sensor (Item 79) as needed. See Procedure 3.
III. Maintenance Procedures Procedure 1 - Removal and Reinstallation of the Power Supply Board 1. Unplug the unit from the power source. 2. Remove all the crank bars (Items 8 and 53) and crank hub assemblies (Item 55) from the unit. 3. Remove the screws (Item 15) that fasten the covers (Items 17 and 59) to the main frame. The covers can be removed now. 4. Locate the power supply cover (Item 88) on side of unit. Remove the four (4) screws and remove the power supply cover.
Measure the voltage across the pin with the red wire (+) and either one of the center pins (-). The voltmeter should measure 45 volts DC. 3. If there is no voltage, replace the power supply board. See Procedure 1. Procedure 3 – Checking and Adjusting the Speed Sensor 1. Turn machine on and press start. 2. Turn crank arms (Item 8) at 1 revolution per second. The RPM window should display around 60 ±10 rpm. 3.
to SCIFIT (request a UPS call tag by phone). 9. Reinstallation is the reverse of removal. Before tightening the tension in the poly-v belt, make sure that it is centered correctly. If misaligned, wedge a screwdriver blade between the face of the brake and the belt while turning assembly to align belt to center of idler pulley. 10. After brake assembly has been aligned and tension set, attach speed sensor tape (Item 71) to the left edge of the brake armature.
Procedure 6 – Checking and Adjusting the Slack in the Chains 1. Check the deflection in the two chains along their longest spans. The two chains should never have less than ¼” nor more than 1” deflection at their longest spans. Since some parts of the chain are stiffer than others, the deflection should be checked across the entire length of the chain. This can be done by rotating the crank handles in 45° increments and checking the deflection of the chain between increments. 2.
IV.
Figure 2 – ProII Main Frame (Items 60-111) 12
Figure 3 – Power Entry Module with Fuse Holder 13
Figure 4 – Pro II Wiring Diagram 14
V. Pro II Parts List Item Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 15 overlay/switch panel Display board standoffs, 1", 6-32 Console screws, 6-32x.5, b.h., blk. cable, ribbon, assy screw, M6x1.0x25, s.h. bar, hand crank bearing, flanged, 5/8 dia., igus handle, handcrank washer, 5/8, plastic ring, snap, retainer, 5/8 shaft, crank, hand washer, cover, plastic, black screw, 1/4-20x1.25, black, b.h.
39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 16 spring, gas adaptor, gas shock, seat, sq. extension, seatbase, Pro II, weldment frame, seat lockwasher, 1/4, black seat pad (back) seat pad (bottom) lockwasher, 1/4, pltd. bolt, 1/4-20x1.25, pltd.
79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 17 sensor, speed, assy. bracket, speed sensor transformer, 24V, 5.4 A screw, M4x.7x10, s.h., blk. washer, M4, pltd. nut, M4x.7, pltd. p.e.m., recep for daisychain module, power entry, RF/EFI screw, 3/16-32x3/8, p.h. cover, supply, power starwasher, #6 screw, 6-32x3/8, p.h.
110 lockwasher, 5/16, pltd. 111 bolt, 5/16-18x2.5, pltd.
