Mindray datascope duo Service Manual Download Page 37

Page: 37 / 42

Troubleshooting Guide

Repair Information

4 - 4

0070-10-0604-01

Duo™ Service Manual

Monitor Failures

MESSAGE/

PROBLEM REASON

SOLUTION

No display after
power-on, power
indicator does not
light.

Bad line fuse

Replace fuse

Bad power supply

Replace power supply

Bad CPU/Display
board

Replace CPU/Display board

NIBP or SpO

will

not function.

CPU/Display board or
module failure.

Isolate and replace defective board/module

Summary of Contents for datascope duo

Page 1: ...Service Manual 0070 01 0604 02_revB_Duo srv color indd 1 3 10 10 5 17 19 PM...

Page 2: ...Service Manual...

Page 3: ...igator is a U S trademark of Mindray DS USA Inc Masimo SET LNOP and CleanShield are U S registered trademarks of Masimo Corp Copyright Mindray DS USA Inc 2008 All rights reserved Contents of this publ...

Page 4: ...tem Checks 2 3 Device Appearance and Installation Checks 2 3 Maintenance Functions Non Monitoring Modes 2 3 Unit of Measure Mode 2 3 Software Version Mode 2 4 Safety Test 2 5 Test Equipment 2 5 Case L...

Page 5: ...Table of Contents ii 0070 10 0604 01 Duo Service Manual This page intentionally left blank...

Page 6: ...iate areas throughout this manual A WARNING is provided to alert the user to potential serious outcomes death injury or serious adverse events to the patient or the user A CAUTION is provided to alert...

Page 7: ...Introduction Warnings Precautions And Notes iv 0070 10 0604 01 Duo Service Manual This page intentionally left blank...

Page 8: ...ompact lightweight portable patient monitor intended for monitoring the following vital signs blood pressure SpO2 optional and pulse rate on adult and pediatric patients The Duo monitor can be powered...

Page 9: ...battery charging circuit will actively charge the battery while the Duo is connected to an AC source Battery charging takes place whether the monitor is on off or in use The power supply will automat...

Page 10: ...e across C5 Primary Rectified Voltage DC Range 105 374 volts C5 Negative Lead Primary Ground Measure across Q1 pin1 and C5 Negative Lead 110k Hz Drive frequency Measure across C12 10 5 vdc input for F...

Page 11: ...er commands from the Keypad The power supply board provides 3 3 vdc and 12 vdc to the CPU board These voltages are monitored by an A D converter located on the CPU board The CPU also controls an integ...

Page 12: ...onnecting hose to the pressure transducer in the NIBP module The output of the pressure transducer is an analog pulsating signal This signal is filtered by a high pass filter and then amplified The am...

Page 13: ...ne red and one infrared and a photodetector The two LEDs are alternately lighted at a precise frequency When the capillary vessels of the fingertip are filled a certain amount of light from the LEDs i...

Page 14: ...roduction The following procedures are provided to verify the proper operation of the Duo monitor A menu driven interface is used to execute all verification tests Performance tests should be performe...

Page 15: ...they are given 3 Use extreme care when reaching inside the opened instrument Do not contact exposed metal parts that may become live 4 Read through each step in the procedure so it is understood prio...

Page 16: ...if used 2 4 2 Maintenance Functions Non Monitoring Modes When entering the maintenance functions non monitoring mode the monitor will perform a self test however the verification of functional LEDs wi...

Page 17: ...er in the Information Codes tile 6 Pressing the Clear key will cause the number displayed in the Pulse Rate tile to cycle through a sequence of four numbers indicating which software version is being...

Page 18: ...ground lead of the analyzer to the equipotential lug of the Duo monitor 3 Perform the leakage tests under the following conditions a Case grounded Normal polarity Normal polarity with open neutral Rev...

Page 19: ...500 cc test chamber to the NIBP fitting on the Duo monitor under test 2 From the NIBP Calibration Mode code 525 momentarily press the CLEAR button on the Duo keypad The Duo will then switch to the Pn...

Page 20: ...ual measured values displayed on the Duo monitor may not compare with the selected target pressure on the simulator This test is intended to confirm the REPEATABILITY not accuracy of dynamic NIBP read...

Page 21: ...the appropriate SpO2 probe connector to the Duo monitor 2 Connect the SpO2 probe to the SpO2 simulator 3 Set the simulator target values to SpO2 98 Pulse Rate 70 4 Verify that the displayed SpO2 and p...

Page 22: ...Duo Service Manual 0070 10 0604 01 3 1 3 0 Parts 3 1 Introduction This section contains exploded views of the Duo monitor internal modules and parts list...

Page 23: ...Introduction Parts 3 2 0070 10 0604 01 Duo Service Manual FIGURE 3 1 Duo Exploded View SpO2 Module See SpO2 Detail 8A 7 9 8 5 3 2 1 4 6 5...

Page 24: ...Duo Service Manual 0070 10 0604 01 3 3 Parts Introduction FIGURE 3 2 Masimo SpO2 Detail 10 11 12 13 12 14 19 10 11 12 13 12 18 14...

Page 25: ...Introduction Parts 3 4 0070 10 0604 01 Duo Service Manual FIGURE 3 3 Nellcor SpO2 Detail 16 17 18 12 10 15 16a 17a...

Page 26: ...Duo Service Manual 0070 10 0604 01 3 5 Parts Introduction FIGURE 3 4 Main Frame 5 Battery Latch Detail 4 5 3 5 20 21 19 22 11...

Page 27: ...Introduction Parts 3 6 0070 10 0604 01 Duo Service Manual FIGURE 3 5 Rear Case Assembly 26 27 28 29 30 31 1 32 33 34 35 36 45 25 26 27 28 29 24 33 23 35 41 31 30 1...

Page 28: ...Duo Service Manual 0070 10 0604 01 3 7 Parts Introduction FIGURE 3 6 Front Case Assembly 9 37 38 39 40 41 42 43 9 35 34 36 37 38 40 39...

Page 29: ...Introduction Parts 3 8 0070 10 0604 01 Duo Service Manual FIGURE 3 7 Battery Connector Assembly Detail...

Page 30: ...LSTD Duo monitor mounting kit 0406 00 0857 01 Casters Non locking 0401 00 0045 Casters Locking 0401 00 0046 Utility basket 0202 00 0166 Included in Duo monitor mounting kit Casters locking Mounting bo...

Page 31: ...lated Power Board 16 0671 00 0242 Nellcor SpO2 Board 16a 0671 00 0066 Nell 3 SpO2 Board 17 0012 00 1457 Nellcor Flex Cable 17a 0012 00 1661 Nellcor Flex Cable 18 0386 00 0308 SpO2 Mounting Plate 19 01...

Page 32: ...e below Display Overlay N S See table below Connector Label Display Overlay LANGUAGE OPTION PART NUMBER English NIBP Only 0330 00 0053 01 English NIBP SpO2 0330 00 0053 11 Upper Rear Label LANGUAGE PA...

Page 33: ...Parts Listing Parts 3 12 0070 10 0604 01 Duo Service Manual This page intentionally left blank...

Page 34: ...nderstanding of the instrument functions as well as an understanding of the theory of operation FIGURE 4 1 Module Interconnection P2 P1 Fan Drive Board Fan Battery P1 Power Supply Board P2 P3 Serial I...

Page 35: ...ded the specified upper safety limit E12 NIBP System Failure Operation of blood pressure pump system has failed E13 NIBP Time Out Measuring time has exceeded 120 seconds E14 NIBP Illegally Reset Unexp...

Page 36: ...ng problems communicating i e framing errors or bad checksums with the Nellcor module E43 Nellcor SpO2 Weak Pulse A pulse rate can not be determined and all other measurement conditions are normal The...

Page 37: ...PROBLEM REASON SOLUTION No display after power on power indicator does not light Bad line fuse Replace fuse Bad power supply Replace power supply Bad CPU Display board Replace CPU Display board NIBP...

Page 38: ...d cuff Use appropriate size cuff Ensure correct cuff application NIBP module is out of calibration Calibrate replace NIBP module No SpO2 reading SpO2 sensor or cable damaged or disconnected Check sens...

Page 39: ...the NIBP tubing from the front housing pressure fitting 4 3 3 SpO2 Interface Board Removal 1 Disconnect the cable from P01 on the CPU Display pcb 2 Remove three 3 5mm hexnuts from their stand offs on...

Page 40: ...head machine screws from the corners of the power supply PCB 3 Remove one 1 3 x 6 mm Phillips panhead machine screw from the line power entry connector 4 Slide the Power Supply pcb towards the bottom...

Page 41: ...0070 10 0604 01 Revision F July 12 2010...

Page 42: ...621 Mindray UK Limited 3 Percy Road St John s Park Huntingdon Cambridgeshire PE29 6SZ United Kingdom Tel 01480 416840 Fax 01480 436588 Mindray Medical France SARL Europarc Cr teil 123 Chemin des Bass...

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