Maintenance Procedures; Procedure 1 - Removal And Reinstallation Of; Procedure 2 - Checking Voltage At The; The Power Supply Board - Bowflex TC1000 Service Manual

III. Maintenance Procedures
Procedure 1 - Removal and
Reinstallation of the Power Supply
Board
1. Unplug the unit from the power
source.
2. Remove the screws (Item 17)
that fasten the covers (Items 10
and 16) to the main frame. The
covers can be removed now.
3. Locate the power supply cover
(Item 22) on unit. Remove the
four (4) screws and the power
supply cover. Be careful when
removing the power supply cover
because of the plastic ties and
brake wires.
4. Cut all the plastic ties.
5. Before disconnecting any of the
wires, make note of the wiring
sequence. Refer to the wiring
diagram, Fig. 4.
6. Disconnect the following:
a. The two (2) white (110 V) and
two (2) black (24 V)
transformer wires. These are
all the wires from J4 on Fig. 4.
b. The black and white wires
from the power entry module
– total of two (2). These are
the wires at terminals ACIN1
and ACIN2 on the LCB.
c. The two (2) red brake wires.
d. The one (1) speed sensor
plug – J5 on Fig. 4.
e. The one (1) ribbon cable.
8. The power supply board (Item
23) can now be removed.
Reinstallation is the reverse of
removal.
9. After reinstalling the power
supply board, perform the
following procedure to test
correct reinstallation.
6
a. Plug into power source and
turn on.
b. The message "SCIFIT FOR
SCIENTIFIC SOLUTIONS"
should be scrolling across
upper display board. If not,
see troubleshooting table.
c. Press the start button.
d. Press SCAN/HOLD so that
the CLIMB RATE indicator
light stays lit.
e. Move the pedals as if
exercising.
f. Verify that the values are
increasing in the CLIMB
RATE window.
g. Press the down arrow key to
slow the pedal speed. It
should be slow and smooth. If
not, consult the trouble-
shooting table.
h. Press the up arrow key to
increase pedal speed. The
stepping motion should be
fast and smooth. If not, refer
to the troubleshooting table.
Procedure 2 - Checking voltage at

the Power Supply Board

1. Follow steps 1-3 in Procedure 1.
2. Disconnect the speed sensor
from the lower supply board at
the J5 terminal. See Fig. 4. Use a
voltmeter to measure the DC
voltage across the speed sensor
pins on the power supply board.
Measure the voltage across the
pin with the red wire (+) and
either one of the center pins (-).
The voltmeter should measure 4-
5 volts DC.