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SECTION 4: TROUBLESHOOTING
4.1 Introduction
4.2 Who Should Perform Repairs
4.3 Repair Level Supported
4.4 How to Use This Section
4.5 Obtaining Replacement Parts
4.6 Troubleshooting Guide
4.1 INTRODUCTION
This section provides information for troubleshooting the NPB-40 and helping
you to isolate a failure to the front panel keypad, the CPU PCB, or the LCD
PCB. A troubleshooting guide is provided in Paragraph 4.6, “Troubleshooting
Guide” that lists possible difficulties, along with probable causes, and
recommended actions to correct each difficulty. The Technical Supplement at
the end of this manual provides information on how the components of the
NPB-40 function.
4.2 WHO SHOULD PERFORM REPAIRS
Only qualified service personnel should remove and replace components of
the NPB-40. Repairs to the NPB-40 are limited to the repair level identified
in Paragraph 4.3, “Repair Level Supported.” If your facility does not have
qualified service personnel, contact the Nellcor Puritan Bennett Technical
Services Department or your local Nellcor Puritan Bennett representative.
4.3 REPAIR LEVEL SUPPORTED
Besides the batteries, the NPB-40 has five replaceable components, the case
top with the front panel keypad, the case bottom, the CPU PCB, the LCD
PCB, and the battery compartment door.
4.4 HOW TO USE THIS SECTION
Failures of the case bottom, the battery compartment door, and the case top,
not including the front panel keypad, are determined by visually inspecting
these components for cracks or deformations and for mechanical failures such
as the screw holes stripping out in the case top. The case top and the front
panel keypad are replaced together. Use the troubleshooting guide provided
in Paragraph 4.6, “Troubleshooting Guide” to isolate failure to the front panel
keypad, the CPU PCB, or the LCD PCB. Once a failure has been isolated,
refer to Section 5, Disassembly Guide for instructions for removing and
replacing a component of the NPB-40.
4.5 OBTAINING REPLACEMENT PARTS
Nellcor Puritan Bennett Technical Services Department provides technical
assistance information and replacement parts. To obtain replacement parts,
contact the Nellcor Puritan Bennett Technical Services Department or your
local Nellcor Puritan Bennett representative. Refer to parts by the part
names and part numbers listed in Section 6, Spare Parts.
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