ASP sterrad NX, Service & Troubleshooting Manual

Page: 48 / 126

4
Diagnostic Tests and Error Messages
Error Message Probable Cause Suggested Remedy
BARCODE FAILURE Barcode scanner did not read
barcode label. Verify that the cassette is
inserted in the proper
orientation and verify data
printed on barcode label.
Replace barcode sensor if
failed.
CANNOT TURN
PLASMA OFF Plasma power out of
specification. Replace LFPS II power supply.
CARRIAGE SENSOR
READ FAILURE Carriage sensor not functional. Replace delivery system
assembly.
CASSETTE MOTOR
FAILURE Cassette motor not functional. Replace delivery system
assembly.
CASSETTE SYSTEM
TIMEOUT System could not communicate
with delivery subsystem. Replace delivery system
assembly.
CHAMBER X
TEMPERATURE
RAILED HIGH Thermistor circuit failure. Replace the appropriate
temperature sensor
CHAMBER X
TEMPERATURE
RAILED LOW Thermistor disconnected. Inspect sensor wiring and
connector. Replace the
appropriate temperature sensor
if failed.
CHAMBER DELTA TOO
BIG The chamber temperature
difference was larger than
expected. A sensor or heater
may have failed. Inspect sensor wiring and
connectors. Replace
temperature sensors if failed.
CHAMBER LOW/HIGH
SELECT FAILURE Chamber heater not functioning
within specification. Inspect chamber heater wiring
and connector. Replace heater
if failed.
CHAMBER PRESSURE
RAILED HIGH Chamber pressure always reads
30 torr. Replace pressure sensor.
CHAMBER PRESSURE
RAILED LOW Chamber pressure always reads
0 torr. Inspect sensor wiring and
connectors. Replace pressure
sensor if failed.
CHAMBER X
TEMPERATURE DID
NOT DROP Chamber heater stuck on. Replace chamber heater.
CHAMBER X
TEMPERATURE DID
NOT RISE Chamber heater/sensor not
functioning within specification. Inspect sensor and heater
wiring and connectors. Replace
failed component.
48 STERRAD
®
NX
™
Service Guide