Hospira LifeCare XL Series, Technical & Service Manual

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SECTION 6 TROUBLESHOOTING
430-00587-008 (Rev. 2/05) 6 - 6 Plum XL Series
6.2.2
ERROR CODES REQUIRING TECHNICAL SERVICE
Table 6-2 lists infusion system error codes that require technical service. Also listed
in Table 6-2 are the malfunction descriptions, possible causes, and corrective actions.

Note: The error code is displayed on the LCD screen. Associated malfunction
descriptions are not displayed. If reference to alarm history is required,
see
Section 6.2.3.1 .
Table 6-2. Error Codes Requiring Technical Service
Error
Code
Malfunction
Description Possible Cause Corrective Action
20-1 Stack overflow MCU RAM error Replace MCU PWA
(Section 7.2.9.1)
21-1 Critical data checksum
failure at start up MCU RAM error Replace MCU PWA
(Section 7.2.9.1)
If condition recurs,
contact Hospira
Nonvolatile memory error
21-2 Critical data checksum
failure during operation MCU RAM error Replace MCU PWA
(Section 7.2.9.1)
21-3 Checksum of operational
parameters failure
at startup MCU RAM error
21-4 Checksum of operational
parameters failure during
operation MCU RAM error
29-1 ROM checksum failure
at startup MCU ROM error
29-2 ROM checksum failure
during operation MCU ROM error
29-3 ROM checksum test
not being performed MCU execution error
34-1 EEPROM read/write
test failure Decode circuit failure Replace MCU PWA
(Section 7.2.9.1)
EEPROM chip failure
35-1 Critical RAM values
found incorrect MCU RAM error
41-1 LCD driver chip
test failure Decode circuit failure Replace MCU PWA
(Section 7.2.9.1)
Replace display PWA
(Section 7.2.7.1)
Driver chip failure
44-1
44-2
Audio BUZZER signal
out of range Audio buzzer
or circuit failure Replace MCU PWA
(Section 7.2.9.1)
Check fuse F3 on power
supply PWA; replace
fuse, if defective
(Section 7.2.8.1)
If condition recurs,
contact Hospira
ADC on MCU chip
not functioning properly
or ADC reference voltage
not correct