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10Repair and Disassembly
WARNING
• Before attempting to open or disassemble the monitor, disconnect it from the AC mains supply.
• Energized circuits are accessible with the covers open. Do not work on the monitor with the
covers open and AC power connected. Only qualified service personnel should open or
disassemble the monitor.
• Performance verification: do not place the system into operation after repair or maintenance has
been performed, until all performance tests and safety tests listed in chapter “Testing and
Maintenance” on page 55 have been performed. Failure to perform all tests could result in
erroneous parameter readings, or patient/operator injury.
CAUTION
Observe ESD (electrostatic discharge) precautions when working within the unit.
Introduction
Remember to store all screws and parts in a safe place for later refitting.
How to Use this Chapter
The disassembly sections detail the step-by-step procedures you use to access replaceable parts of the
monitor and the transducers.
The monitor consists of two major assemblies:
• The top cover assembly
• The bottom housing assembly
The top cover assembly consists of the top cover housing, the display assembly, the recorder assembly,
and the recorder adapter board.
The bottom housing assembly consists of the bottom housing, the power supply assembly, the main
CPU board, the bus master board, and depending on the options ordered, the noninvasive blood
pressure assembly, the SpO
2
assembly, the input device interfaces, and the RS232/LAN interface.
All part numbers of spare parts are listed in the “Parts” on page 125 chapter of this service guide.
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