Section 5: Troubleshooting; Introduction; How To Use This Section; Who Should Perform Repairs - Mallinckrodt NELLCOR NPB-4000 Service Manual

SECTION 5: TROUBLESHOOTING

5. TROUBLESHOOTING

5.1 INTRODUCTION

5.2 HOW TO USE THIS SECTION

5.3 WHO SHOULD PERFORM REPAIRS

5.4 REPLACEMENT LEVEL SUPPORTED

5.5 OBTAINING REPLACEMENT PARTS

5.1 Introduction
5.2 How to Use this Section
5.3 Who Should Perform Repairs
5.4 Replacement Level Supported
5.5 Obtaining Replacement Parts
5.6 Troubleshooting Guide
This section explains how to troubleshoot the NPB-4000/C if problems arise.
Tables are supplied that list possible monitor difficulties, along with probable
causes, and recommended actions to correct the difficulty.
Use this section in conjunction with Section 3, Performance Verification, and
Section 7, Spare Parts. To remove and replace a part you suspect is defective,
follow the instructions in Section 6, Disassembly Guide. The circuit analysis
section in the Technical Supplement appendix offers information on how the
monitor functions.
Only qualified service personnel should open the monitor housing, remove and
replace components, or make adjustments. If your medical facility does not have
qualified service personnel, contact Mallinckrodt Technical Services or your
local Mallinckrodt representative.
The replacement level supported for this product is to the printed circuit board
(PCB) and major subassembly level. Once you isolate a suspected PCB, follow
the procedures in Section 6, Disassembly Guide, to replace the PCB with a
known good PCB. Check to see if the trouble symptom disappears and that the
monitor passes all performance tests. If the trouble symptom persists, swap back
the replacement PCB with the suspected malfunctioning PCB (the original PCB
that was installed when you started troubleshooting) and continue
troubleshooting as directed in this section.
Mallinckrodt Technical Services provides technical assistance information and
replacement parts. To obtain replacement parts, contact Mallinckrodt or your
local Mallinckrodt representative. Refer to parts by the part names and part
numbers listed in Section 7, Spare Parts.
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