Service manual

Section 1: Introduction
1-3
Upon completion of the POST display test, the software versions will be
displayed for approximately 2 seconds. Two versions are displayed:
• The first version is indicated by the numeral “1” in the leftmost segment of
the %SpO
2 display. The series of digits and decimal points displayed to the
right of the “1” represent the main processor software version.
• The second version is indicated by the numeral “2” in the leftmost segment
of the %SpO
2 display. The number(s) appearing to the right of the “2”
represent the subprocessor software version.
The software version numbers are often needed when calling Mallinckrodt’s
Technical Services Department or your local Mallinckrodt representative for
technical assistance. Record the numbers and have them available prior to
requesting technical assistance.
Upon successful completion of POST, the NPB-190 sounds a 1-second tone
indicating that the monitor has passed the test.
If the start-up sequence is not completed as described above do not use the
monitor.
1.4 RELATED DOCUMENTS
To perform test and troubleshooting procedures and to understand the principles
of operation and circuit analysis sections of this manual, you must know how to
operate the monitor. Refer to the NPB-190 operator’s manual. To understand the
various Nellcor sensors that work with the monitor, refer to the individual sensor
directions for use.