Bus Voltage Flow Chart - Cardiac Science ST 55 Service Manual

Bus Voltage Flow Chart

BUS voltage is
too high
Check line
voltage
Too high?
No
Yes
Replace BUS Error occurs
Recover at high
System (BRS) grade?
Figure 6-1: Error Code Flow Chart: EPHI and EPLO
TM 55/65 Treadmill 4.0
EPHI
Have customer
Yes
get building
maintenance to
correct voltage
problem
No
Replace AC
Drive Module
EPHI
BUS voltage is
too low
Check line
voltage
Yes
Too low?
Yes
Is DS3 On?
Is
No
output of
transformer
< 24.6
VAC?
Yes
Replace
transformer
Error Flow Charts
No
CAUTION!
Disconnect
power and wait
No
for high voltage
indicator (red
LEDs) to go off.
Connect meter THEN
power up.
Check transformer
output: TP14 and TP5
70-00298-01 A 6-9