Troubleshooting Tables; Ii. Troubleshooting Tables - SCIFIT ISO1000R Service Manual

II. Troubleshooting Tables

Note: A reference given in parenthesis, "(See Figure...)", is intended for the
servicing of a bi-directional unit. A reference without parenthesis is followed when
servicing a standard unit.
Table 1 – Electrical Troubleshooting
Problem
1.1 The machine appears to
be off in spite of being
plugged in and switched
"on".
1.2 Upper control panel
lights are dim.
1.3 Upper board accepts
commands but pedaling
resistance does not
change.
1.4 LED's on upper board
blinking off/on, then go
dead.
1.5 Heart rate displays zero
(0) in window
3
Possible Reasons
Faulty power supply
board.
Faulty fuse.
Loose cable connection.
Power display board is
faulty.
Dip switch setting is
incorrect.
Power display board is
faulty.
Ribbon cable
connections are loose.
Faulty power supply
board.
Display board is faulty.
Chest strap and
transmitter improperly
worn.
Loose sensor lead con-
nection at display board.
Faulty receiver.
Solutions
If buttons on the control display
beep when pressed, replace power
supply board. Otherwise, check
power supply board. See
Procedure 2.
Check and replace fuse if needed.
See Figure 5.
Check wire connections at power
supply and display boards.
Replace power display board. See
Procedure 1.
Set dip switch to 01.
Check and replace power supply
board as needed. See Procedure 2.
Check and replace accordingly.
Unplug and re-plug machine to
reset.
Check and replace power supply
board as needed. See Procedure 2.
Replace display board.
Verify that they are being properly
worn.
Check and adjust as needed.
If there is no audible signal, replace
receiver.