Huntleigh FD1-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.
R
SERVICE MANUAL
...with people in mind
® and ™ are trademarks of Huntleigh Technology Limited
As our policy is one of continuous improvement, we reserve the right to modify designs without prior
notice.
HIGH SENSITIVITY
POCKET DOPPLERS
726374-33
© Huntleigh Healthcare Limited 2004-2009

Huntleigh FD1-P Specifications

General

Type	Doppler
Category	Medical Equipment
Probe Frequency	2 MHz
Display	LCD
Power Supply	9V battery
Output	Audio

Summary

General Information

1.4 Antistatic Handling

Mandates precautions to avoid static damage to CMOS and microcontroller circuitry.

Safety Aspects

Technical Description

4.3 Fetal Heart Rate Processing, (FD2-P, MD2-P, FD1-P, FD3-P)

Details FHR calculation using amplitude envelope and auto-correlation of the Doppler audio signal.

4.17 Obstetric Probe (OP2HS, OP3HS, D920-P, D930-P, FD1-P, FD3-P)

Shows block diagram for obstetric probes and details Oscillator, Transmitter, Demodulator.

4.18 Vascular Probe (VP4HS, VP5HS, VP8HS, VP10HS, EZ8)

Shows block diagram for vascular probes and details Oscillator, Johnson Counter, Transmitter, Receive Amplifier.

Electrostatic Discharge (ESD) Precautions

5.2 Protective Measures

Recommends dissipative mats, wrist straps, and anti-static bags to prevent ESD damage.

Servicing Procedures - Control Unit

6.1 Control Unit Dismantling Procedure

Provides step-by-step instructions for disassembling the control unit, including battery cover and case separation.

6.1 Control Unit Dismantling Procedure - Component Replacement

Details LCD and Loudspeaker replacement procedures.

6.2 PCB Removal

Outlines steps for removing the Printed Circuit Board (PCB) from the control unit.

6.3 Changing Components

General guide for replacing sockets, switches, retractile cables, and volume controls.

6.4 Control Unit Reassembly

Provides instructions for reassembling the control unit after servicing, including PCB, speaker, and switch fitting.

6.4 Control Unit Reassembly - Final Steps

Covers replacing screws, battery cover, final testing, and refers to exploded view of D900-P.

Probe Head Replacement Procedure

7.3 Dismantling Procedure - (All probes except D920-P, D930-P, FD1-P, & FD3-P)

Instructions for dismantling probe cases using a splitter for specific probe types.

7.4a Dismantling Procedure - D920-P, D930-P & FD1-P

Steps for dismantling D920-P, D930-P, and FD1-P probes, including clip removal and head disconnection.

7.4b Dismantling Procedure - D920-P, D930-P, FD1-P & FD3-P

Instructions for dismantling D920-P, D930-P, FD1-P, and FD3-P probes, including case moulding and screen tube removal.

7.5 New Head Fitting and Alignment.

Guides on selecting new probe heads, connecting to adaptor PCB, and initial power/current checks.

7.5 New Head Fitting and Alignment - Testing

Details connecting scope probe to transmitter terminals and adjusting PR1 for sine wave output.

7.5 New Head Fitting and Alignment - Assembly Details

Shows head adaptor PCB references and vascular probe head assembly diagram.

8a. Vascular Probe Head Assemblies Only

Specific instructions for vascular probes on determining drive voltage and setting transmitter voltage.

8b. Obstetric Probe Head Assemblies Only

Specific instructions for obstetric probes on adjusting PR1 for supply current and recording data.

7.6 Reassembly Procedure - All probes except D920-P, D930-P, FD1-P & FD3-P

Steps for reassembling probes, including sliding screen tube, soldering, and fitting case halves.

7.7a Reassembly Procedure - D920-P, D930-P & FD1-P

Instructions for reassembling D920-P, D930-P, FD1-P probes with silicon grease and head assembly.

7.7a Reassembly Procedure - D920-P, D930-P & FD1-P - Final Steps

Finishing steps for probe reassembly, including cleaning excess grease and fitting clips with adhesive.

7.7b Reassembly Procedure - D920-P, D930-P, FD1-P & FD3-P

Instructions for reassembling D920-P, D930-P, FD1-P, FD3-P probes with silicon and clips.

7.7b Reassembly Procedure - D920-P, D930-P, FD1-P & FD3-P - Final Steps

Final steps for probe reassembly, including securing clips, removing excess silicon, and allowing set time.

7.8 Waterproof Inspection & Test Procedure - D920-P, D930-P, FD1-P & FD3-P

Procedure for waterproof testing of specific probe models using pressure and immersion.

Probe Functional Test Specification

8.2 Functional Tests - Vascular Probes VP4HS - VP10HS & EZ8

Steps for testing vascular probes, including RFI checks, hiss levels, and bi-directional mode verification.

8.3 Functional Test - Obstetric Probes OP2HS, OP3HS, D920-P, D930-P, FD1-P, FD3-P

Instructions for testing obstetric probes, checking noise, signal levels, Fetal Mode, and audio performance.

Fault Finding