8-2 Troubleshooting
8.4 Basic System Troubleshooting
8.4.1 System Power
Table 8-1 System Power Troubleshooting
Symptom Possible Cause Recovery Procedures
The ON (l) button has not been
pressed
Press ON (l) on the front panel. The green
button will illuminate.
A circuit breaker has been tripped
The S-920 incorporates circuit breakers with a
“push to reset” feature rather than fuses. For
detailed troubleshooting of power related
issues, consult the power manager block
diagram 7207632BD or call Asymtek Technical
Support.
Main power cable is disconnected
Check that the main power cable is connected
to an AC source.
Main power circuit breaker is OFF
(0)
Turn ON (l) the main power switch at the rear
of the system. The S-920 sub-systems receive
electrical power entirely through the power
manager, accessible from the rear of the
machine. The main circuit breaker switch is the
only mechanism for completely powering down
the system, including power to the laptop
computer.
EMO button has been activated
1. Turn the EMO button clockwise until it
pops out. The EMO buttons at the front
and rear of the system interrupt power to
all power connections except
the laptop
computer.
2. Press ON (l) on the front panel.
Interlock circuit is interrupted
Make sure the hood is closed. The interlock
places the servo control system in a low power
state that is just sufficient to hold the positioner
in place for syringe changes. Opening the front
hood does not completely power down the S-
920, and does not power off the PC.
No power to major
system components
Ventilation Time Delay (Flux
Applications)
The dispensing system turns on after an
approximate 60-second vent air time delay.
Power controls cable disconnected
Verify the power controls cables are properly
routed and connected from the Power
Manager to the front panel switches.
System fails to start
Button failure Contact a service technician.
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