Welch Allyn PneumoCheck 61000, Service Manual

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Service Manual 610132 Rev. E Pneumocheck Handle Printer/Charger 37
The device cannot trim the baseline out. This is usually
due to an abrupt thermal change. The machine must
be allowed to return to an acceptable temperature
range before proceeding.
Encountering either the TEMP LIM or TRIM LIM
messages during normal operation may indicate a
possible hardware failure.
The spirometer failed to see a stable baseline value
within 30 seconds.
Bus error.
EEPROM check sum error. (This will occur once upon
first use of a new machine).
Out of memory.
Opcode error--another form of bus error.
Interrupt timing error.
EEPROM failure.
Spurious interrupt.
Error numbers greater that these indicate an
unexpected event in the program. In general, error
messages are probably caused by a hardware failure.
TRIM LIM
UNSTEADY
ERROR 0
ERROR 1
ERROR 2
ERROR 3
ERROR 4
ERROR 5
ERROR 6
Section 3 - Theory of Operation