Life Fitness 90R, Service Manual

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Lifecycle Recumbent Bikes LC95R, LC91R, LC85R, R9, R7, 95Ri, 93Ri, 90R, and 95Re
ALTERNATOR CONTROL BOARD - Model 95Re
Functional Description
The Alternator Control
Board is designed to
regulate the alternator
voltage by modulating the
field current. It regulates
the pass current (RPM
signal) from the Alternator
to the Console, and the
pass current form the
alternator to the load
resistor while providing
supply voltage for the
console while charging the
system battery.
Connector and Pin Connections
Connector Location Pin Functional Description
1 Vsc
2 Ground
3 VALT
4 RPM (ALT)
5 FIELD
6 REED DISABLE
7 LOADCMD
8 N.C.
9 RPM-REED
10 N.C.
11 KICK
12 N.C.
13 N.C.
P1 is a Molex 11 pin connector
that connects to the console.
14 7
1
8
14 VSYS
1 GROUND – ALTERNATOR
2 GROUND – ALTERNATOR
3 GROUND – ALTERNATOR
4 RPM (5VDC)
5 GROUND – ALTERNATOR
6 FIELD (1-4 VDC)
7 LOAD
8 LOAD
9 LOAD
10 VALT (10VDC)
11 VALT (10VDC)
P2 is a 12 pin connector that
connects to the alternator and
power resistor
12 LOAD
P4
P2
P1
P3
P5