EPD/HB/40521/000
ISSUE 5
EPD TECHNICAL HANDBOOK Page 75
Code Text as displayed by
EasyEPD2
EPD Action Recommended
Customer
Action
Remarks
090 Hard Gamma detector fail* None- continues
normal processing
Reset unit.
Return to
supplier if
recurs.
Only the first
detector to fail is
logged.
091 Soft Gamma detector fail* None- continues
normal processing
-ditto- -ditto-
092 Full Beta detector fail* None- continues
normal processing
-ditto- -ditto-
093 Beta Compensating
detector fail*
None- continues
normal processing
-ditto- -ditto-
094 CRC error - Dose Alarm
Thresholds
Logs fault and
performs reset without
doing log first. This
means that good data
is read back from the
EEPROM. For the
ADS and Dose data,
the QF bits are also
set. This is done by
reading the data from
EEPROM, setting the
bit, calculating the
new checksum,
restoring the data to
EEPROM and then
doing a reset. The
correct values will
then be restored on
program restart.
Reset unit.
Return to
supplier if
recurs.
Indicates
corruption of data
in RAM. Up to 15
mins of dose
could be lost.
095 CRC error - Rate Alarm
Thresholds
-ditto- -ditto- -ditto-
096 CRC error - ADS Data -ditto- -ditto- -ditto-
097 CRC error - Calibration
Factors
-ditto- -ditto- -ditto-
098 CRC error - Dose Data -ditto- -ditto- -ditto-
* only the first detector to fail is logged
IRDA Module
Code Text as displayed by
EasyEPD2
EPD
Action
Recommended
Customer Action
Remarks
100 IRDA Module Error Reserved for future use
Table 5.2 EPD Faults Logged to History Event Store.