Section 5: Disassembly Guide; Introduction; System Disassembly And Reassembly - Nellcor NPB-40 Service Manual

SECTION 5: DISASSEMBLY GUIDE

5.1

INTRODUCTION

5.2

SYSTEM DISASSEMBLY AND REASSEMBLY

5.1 Introduction
5.2 System Disassembly and Reassembly
The NPB-40 can be disassembled into five assemblies:
• Case top/front panel keypad
• Case bottom
• CPU PCB
• LCD PCB
• Battery compartment door
Note: Some spare parts you receive will have a business reply card
attached. When you receive these spare parts, please fill out and
return the business reply card.
The only tool you will need to disassemble or reassemble the NPB-40 is a
Number 1 (medium) Phillips-head screwdriver.
Caution: Observe ESD (electrostatic discharge) precautions when
disassembling and reassembling the NPB-40 and when handling any
of the components of the NPB-40.
Use the following procedure to disassemble the NPB-40. Reassemble the
monitor in reverse order and, if the unit is to be returned to service, install
batteries when reassembly is complete and replace the battery compartment
door. Nellcor Puritan Bennett recommends that you follow this disassembly
procedure in the order presented.
Note: Before you begin to disassemble the NPB-40, remove the battery
compartment door and remove the batteries.
1. Place the NPB-40 on a nonabrasive surface so that the back of the unit
is up and the bottom of the unit is closest to you.
2. Remove the four screws holding the case together as indicated in Figure
5-1.
Note: The two screws at the top of the NPB-40 are longer than those
at the bottom. When reassembling the unit, be sure to install
the longer screws at the top and the shorter screws at the
bottom.
Caution: When reassembling the NPB-40, hand tighten the screws
that hold the NPB-40 case together to a maximum of 4 inch-pounds.
Over tightening could cause the screws to strip out the screw-holes
in the top case, rendering it unusable.
5-1