Huntleigh D900-P User Manual

Service Agreements
Periodic inspection is essential to ensure continued effective operation. Contact the Company
or its approved agents or distributors for further information on service contracts.
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SERVICE MANUAL
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Huntleigh D900-P Specifications

General

Category	Medical Equipment
Type	Doppler
Frequency	8 MHz
Display	LCD
Probe Type	Pencil
Weight	295 g (including batteries)

Summary

General Information

Antistatic Handling

Essential precautions for handling static-sensitive components to prevent damage during servicing.

Safety Aspects

Cautions and Precautions

Critical warnings regarding use in flammable environments and improper cleaning methods.

Technical Description

Doppler Principle and Audio Processing

Explains the fundamental Doppler effect and how audio signals are processed for output.

Servicing Procedures - Control Unit

Control Unit Dismantling and Reassembly

PCB Component Replacement

Probe Head Replacement Procedure

Probe Head Dismantling and Fitting

Waterproof Inspection and Test

Procedure for testing probe waterproofing, essential after replacement to ensure integrity.

Probe Functional Test Specification

Vascular and Obstetric Probe Testing

Fault Finding

Common Faults and Diagnostics

Appendix A: Special Handling and Soldering

Electrostatic Discharge (ESD) Handling

Detailed procedures for handling ESD sensitive devices in a specialised handling area (SHA).

Appendix E: Probe Cable Wiring Details

D920/D930/FD1/FD3-P Probe Wiring