Nellcor OxiMax N 5500 Service Manual page 9

Introduction
WARNING: During the safety test, AC mains voltage will be present on the
applied part terminals. Exercise caution to avoid electrical shock hazard.
WARNING: Do not place the N5500 into operation after repair or maintenance
has been performed, until all Performance Tests and Safety Tests listed in section
3 of this service manual have been performed. Failure to perform all tests could
result in erroneous monitor readings.
WARNING: High voltage is generated by the LCD backlight driver. Exe rcise
caution when operating monitor with covers open..
Cautions
Cautions are identified by the Caution symbol shown above.
Cautions alert the user to exercise care necessary for the safe and effective use of
the N5500 monitor.
CAUTION: Observe ESD (electrostatic discharge) precautions when working
within the unit and/or when disassembling and reassembling the N5500 patient
monitor and when handling any of the components of the N5500 patient monitor.
CAUTION: When reassembling the N5500, over-tightening could strip out the
screw holes in the cases, rendering it unusable.
CAUTION: If any problem with N5500 built in an optional printer, check a
printer's door is closed well. Operating error may be caused if the cover is not
closed correctly.
CAUTION: If internal battery cable has been disconnected, pay particular
attention to polarity of the cable before reattaching. If battery cable polarity is
reversed, it is likely that circuit damage will occur.
CAUTION: Ferrite Cores are used for electromagnetic compatibility. Please do
not remove Ferrite Cores while disassembling or reassembling, otherwise the
monitor can be affected by electromagnetic interference and measure inaccurate
data to be displayed or stored.
CAUTION: When reassembling, never forget that one of four screws on the back
bracket must be connected to green ground cable of the power inlet. This method
is for protecting dormant electrical shock hazards to operator or service engineer.
2 N5500 Service Manual