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Chapter 3 Troubleshooting Guide

Chapter 3

Troubleshooting Guide

In this chapter:

3.1

Troubleshooting the neoBLUE light

3.2

Troubleshooting the LED light current assembly

This chapter assumes that you are a qualified biomedical technician who is familiar with the neoBLUE
light.

3.1 Troubleshooting the neoBLUE light

When opening the device, be sure to follow the procedures described in Chapter 4, as well as the steps
and precautions in Section 2.2 on page 15 and Section 2.3 on page 16.

20

neoBLUE LED Phototherapy System Service Manual

PN 001320 Rev K

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Содержание neoBLUE

Страница 1: ...Service Manual...

Страница 2: ...rom Natus Medical Incorporated The content of this manual may change without notice Natus Medical Incorporated 5900 First Avenue South Seattle WA 98108 USA Telephone 1 650 802 0400 Fax 1 650 802 0401...

Страница 3: ...ng Guide 20 3 1 Troubleshooting the neoBLUE light 20 3 2 Troubleshooting the LED light current assembly 23 Chapter 4 Repair Procedures 26 4 1 Removing the lens 27 4 2 Removing the LED light panel 28 4...

Страница 4: ...two filters on backside of enclosure 14 Figure 2 2 Measuring distance 18 Figure 2 3 Adjusting the potentiometers 19 Figure 4 1 Removing the lens 28 Figure 4 2 Removing the LED light panel 29 Figure 5...

Страница 5: ...r 3 Repair procedures Chapter 4 Parts and ordering information Chapter 5 Measuring the neoBLUE light with a radiometer Chapter 6 Electromagnetic Specifications Chapter 7 1 1 2 Intended users This serv...

Страница 6: ...Important An instruction provided to help ensure correct clinical results and provide quality assurance to the phototherapy procedures Note Background information provided to clarify a particular step...

Страница 7: ...n over their lifetime with proper use Nevertheless the user can adjust the output of the LEDs for any degradation using the two potentiometers Life testing has shown neoBLUE LEDs can emit high intensi...

Страница 8: ...ntensity rocker switch Sets intensity to high or low 9 Target light rocker switch Controls red target light momentary action 33 On standby switch Lights up when device is on FIGURE 1 2 EXTERNAL REAR V...

Страница 9: ...ludes fuses 12 Enclosure fan filter assembly Consists of a cover filter and backplate 29 Thumbscrew For attaching enclosure to roll stand 30 Locating post screw Slotted 34 Timer Counts hours device is...

Страница 10: ...udes fuses 8 Light intensity rocker switch For selecting intensity level 9 Target light rocker switch Indicates center of treatment area 11 Vent Guard A Mounting plate Mounts light to roll stand 33 On...

Страница 11: ...FIGURE 1 4 POWER SUPPLY s Item Description A 24 volt ground Pins 5 8 B 24 volts Pins 1 4 C AC inlet C B A neoBLUE LED Phototherapy System Service Manual 9 PN 001320 Rev K...

Страница 12: ...anel header J8 B Main power fan header J2 C Front panel switch header J3 D Light intensity adjustment potentiometers E On standby header J4 F Timer power header J5 G Fan power header J6 H Timer reset...

Страница 13: ...ions FIGURE 1 6 BLOCK DIAGRAM 1 4 Before you start WARNING Observe Electrostatic Discharge ESD precautions when handling adjusting or performing any procedure with the device internal components neoBL...

Страница 14: ...uth Seattle WA 98108 USA Telephone 1 650 802 0400 Fax 1 650 802 0401 Technical Service 1 800 303 0306 Technical Service Fax 1 650 802 8680 E mail technical_service natus com Customer Service 1 800 303...

Страница 15: ...UUT These procedures must be performed after any of the following events and or as prescribed by the institution s maintenance schedule Initial receipt of the UUT at the institution Foreign material o...

Страница 16: ...ure and accessories Clean the UUT enclosure using a cloth dampened with Germiocide or an equivalent product Wipe the exterior plastic surfaces lightly Do not allow any liquid to penetrate the power co...

Страница 17: ...ment and its application must comply with the applicable standard in Table 2 1 Ground Integrity Table 2 2 Earth leakage current Table 2 3 Enclosure leakage current TABLE 2 1 GROUND INTEGRITY 100 milli...

Страница 18: ...nversion Chart in chapter 6 If the meter is not listed please contact Natus Technical Service before adjusting light intensity 2 3 1 Verifying general performance 1 Turn off the Illuminated On Standby...

Страница 19: ...s operating The decimal point should be flashing if the device is on and not flashing when the device is off Turn off the UUT by turning off the Illuminated On standby switch 11 Check the light intens...

Страница 20: ...light panel over the work pad 3 Place the radiometer on the work pad under the light panel The distance B should be measured from the work pad surface to the bottom of the lens 6 as shown in Figure 2...

Страница 21: ...o the user Turn off the UUT and ignore all further steps in this chapter 7 If light intensity on either setting was not within tolerance leave the test setup as is and proceed to Section 2 4 on page 2...

Страница 22: ...hapter assumes that you are a qualified biomedical technician who is familiar with the neoBLUE light 3 1 Troubleshooting the neoBLUE light When opening the device be sure to follow the procedures desc...

Страница 23: ...y module Plug in Verify that the voltage coming out of the power inlet is between 90 132V or 210 260V depending on the power system used in your country Damaged power supply Verify that the power supp...

Страница 24: ...warm verify that vents are not blocked Figure 2 1 on page 17 Fan not working Verify that both enclosure fans are functioning correctly If they are not refer to fan actions below Enclosure fan s not w...

Страница 25: ...E and plug it into an appropriate AC power source Verify that the neoBLUE is getting the correct mains voltage at the power supply module input Ac voltage into the power supply should be 100VAC to 240...

Страница 26: ...J1 6 J2 4 2 7 5 1 VDC HIGH setting 4 5 6 1 VDC LOW setting Target LED brightness J1 7 J2 4 4 0 VDC 1 0 VDC These voltages should vary within the ranges given as the adjustment potentiometers R3 HIGH...

Страница 27: ...DC J4 3 J4 4 21 5 22 5 VDC J5 1 J5 3 23 5 24 5 VDC Switch in OFF position Pins Voltage range J4 1 J4 4 21 5 24 5 VDC J4 2 J4 4 0 0 0 1 VDC J4 3 J4 4 0 0 0 1 VDC J5 1 J5 3 0 0 0 1 VDC Failure of any of...

Страница 28: ...e enclosure remove and or replace components or make adjustments If your medical facility does not have qualified personnel please contact Natus Technical Service for further assistance After any repa...

Страница 29: ...he lens away from the enclosure Use caution The lens is tightly fitted on the enclosure 5 If you are replacing the lens obtain the replacement and reverse the steps above to install the lens Note that...

Страница 30: ...stant current board by a power cable Do not attempt complete removal until the cable connector is removed from the receptacle on the light panel To remove the cable squeeze the release lock and pull u...

Страница 31: ...ections discuss removal of the enclosure components which are shown in Figure 4 4 on page 30 Removing the enclosure fan on page 30 Removing the AC power entry module on page 30 Removing the switches o...

Страница 32: ...ction 4 2 on page 28 until the UUR is completely assembled Return to Chapter 2 and perform the safety tests and performance verification and adjustment 4 3 2 Removing the AC power entry module 1 Obser...

Страница 33: ...r of the enclosure 3 If a switch is being replaced Obtain the replacement and reverse these steps to install Reverse all steps in Section 4 2 on page 28 until the UUR is completely assembled Return to...

Страница 34: ...y be required for spare parts The list of product specifications in this chapter will guide you in making purchases from vendors other than Natus 5 2 Parts in context Two views of the neoBLUE light ap...

Страница 35: ...Item Description 19 Screw 1 4 4 LED light current assembly 5 Power supply 10 Enclosure fan Constant Current Board Side 14 Enclosure fan Power Supply Side 5 14 4 19 x4 19 x4 10 neoBLUE LED Phototherapy...

Страница 36: ...nsity switch 22 Screw 1 3 4 9 Target rocker switch 24 Screw 5 8 10 Fan Enclosure Power Supply side 29 Thumbscrew 11 Vent guard 30 Locating post screw 1 2 Enclosure fan filter assembly 33 Illuminated o...

Страница 37: ...re of the part or reference to a figure TABLE 5 1 PARTS LIST FOR NATUS NEOBLUE SYSTEM Item Qty Name Illustration 1 1 001088 LED light panel Figure 1 3 on page 8 2 1 040940 Enclosure Figure 1 2 on page...

Страница 38: ...onnectors N a 16 1 001101 Cable Fan power supply 4 Conductor cable w 2 connectors and 2 lug rings N a 17 1 900073 Cable Tie 14 5 Nylon N a 18 1 001102 Cable LED light panel 10 Conductor cable w 2 conn...

Страница 39: ...en 34 1 900831 Timer single display 35 1 040892 Cable Power for timer 2 conductors with 1 connector and 2 spade connectors 36 1 001097 Cable On standby switch 4 conductors with 1 connector and 4 spade...

Страница 40: ...cifications FIGURE 5 4 ENCLOSURE ITEM 2 A Timer hole B Roll stand mounting plate C Illuminated switch hole FIGURE 5 5 LED LIGHT CURRENT ASSEMBLY ITEM 3 B C A 38 neoBLUE LED Phototherapy System Service...

Страница 41: ...e User Manual and this Service Manual These manuals may be used online or printed out For best results print two sided in color Warranty statement TABLE 5 2 ACCESSORY PACK Item Qty Name Illustration 1...

Страница 42: ...justable from 42 to 59 3 inches 1 07 m to 1 50 m 7 6 cm Center of lens from post adjustable from less than 9 to 13 1 inches 23 cm to 33 cm 2 5 cm Tilt adjustment of enclosure 0 horizontal to approx 40...

Страница 43: ...LUE light to the desired intensity when changing the distance Because your facility may use a different radiometer to measure light intensity output it is necessary to understand how your reading corr...

Страница 44: ...SPR 11 Group 1 The neoBLUE LED Phototherapy device uses RF energy only for its internal function Therefore its RF emissions are very low and are not likely to cause any interference in nearby electron...

Страница 45: ...ions and voltage variations on power supply input lines IEC 61000 4 11 5 UT 95 dip in UT for 0 5 cycle 40 UT 60 dip in UT for 5 cycles 70 UT 30 dip in UT for 25 cycles 5 UT 95 dip in UT for 5 seconds...

Страница 46: ...and TV broadcast cannot be predicted theoretically with accuracy To assess the electromagnetic environment due to fixed RF transmitters an electromagnetic site survey should be considered If the measu...

Страница 47: ...ion distance d in meters m can be estimated using the equation applicable to the frequency of the transmitter where P is the maximum output power rating of the transmitter in Watts W according to the...

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