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6-8

OLYMPIC SMART SCALE 

Model 50/51 Instruction Manual

Repair Procedures

 

Testing the Membrane Switch Panel

Test the membrane switch panel if the

 AVERAGE

/

UNLOCK

KG

/

LB

, or 

ZERO

 

do not function.

Required Items:

„

Allen wrench

„

ESD protection

„

Jumper wires (x2)

„

Voltmeter

To test the membrane switch panel:

1

If the scale is on, press 

ON/OFF

 to turn off the scale, then unplug the 

power cord.

2

Disassemble the scale (see page 6-2).

3

Disconnect the ribbon cable connector from the display PCB (see Figure 6.6).

Figure 6.6

Disconnecting the ribbon cable connector

4

Verify that the membrane switch panel is properly connected.

5

Using two small jumper wires, check the resistance of the malfunctioning 

switch at the corresponding pin on J2 of the display PCB (see Table 6.1). 

6

Using the ground reference point of either pin 5 or 6, check the resistance. 

The resistance should be less than 50

Ω

 (circuit closed) when pressed —

„

If not, replace the membrane switch panel.

Display PCB

Mounting screws (x4)

Ribbon cable connector

NOTE

#

If the 

KG/LB

 disabling switch has been activated (see page 2-1), 

KG/LB

 will be disabled 

and the scale will only display kilograms.

Table 6.1

Control panel button pin out 

Switch

J2 pin on display PCB

Common (ground)

5, 6

Zero

2

Average/Unlock

4

Kg/Lb

3

On/Off

1

Recall

7

Summary of Contents for OLYMPIC SMART SCALE 50

Page 1: ...nual OLYMPIC SMART SCALE Model 50 51 CAUTION Read and be familiar with this manual before installing operating or servicing this device To ensure operator technician and patient safety use only as spe...

Page 2: ......

Page 3: ...The information in this manual is subject to change without notice No part of this manual may be photocopied reproduced translated or reduced to any electronic medium without the express written perm...

Page 4: ......

Page 5: ...First Use 2 4 Initial Battery Charge 2 4 Calibration Check 2 4 Testing the Device 2 5 Section 3 Operation 3 1 Operating the Smart Scale 3 1 Setting the Caster Brakes 3 2 Adjusting the Platform Ends 3...

Page 6: ...the Main Printed Circuit Board 6 9 Testing the Power Supply Printed Circuit Board 6 10 Replacing the Power Supply Printed Circuit Board 6 11 Testing the Display Printed Circuit Board 6 11 Replacing t...

Page 7: ...for use by qualified service technicians Conventions The following conventions are used in this manual Table 1 1 Conventions Convention Description NOTE Notes provide additional information to clarif...

Page 8: ...mbols Symbol Definition Symbol Definition Alternating current ac voltage Nonionizing electromagnetic radiation Atmospheric pressure Protective earth ground Caution read instructions Rechargeable batte...

Page 9: ...sily accommodate the patient see Figure 1 2 The scale operates on rechargeable batteries or power from a hospital grade electrical outlet The Model 50 is a table top model while the Model 51 roll arou...

Page 10: ...scale AVERAGING yellow The scale is computing a four second average of the patient s weight Avoid touching the patient and platform while the AVERAGING light is flashing OVERLOAD The weight on the pl...

Page 11: ...electronic smoothing filter is activated and each reading six sample average is compared to the previous reading If the reading is within 200 g it is averaged with the previous reading If eight consec...

Page 12: ...1 6 OLYMPIC SMART SCALE Model 50 51 Instruction Manual Description...

Page 13: ...of measurement between metric and English kilograms and pounds You can permanently lock the units to measure kilograms only WARNING Electrical shock hazard when the enclosure is open Unplug the power...

Page 14: ...ess ON OFF to turn on the scale The units are now locked to kilograms 7 Press KG LB to verify that the units are locked to kilograms If locked the display should still show kilograms 8 Place the Locke...

Page 15: ...insert the mounting screws through the mounting holes in the cart see Figure 2 3 and tighten until the scale is securely attached 4 Remove the backing from the caution label which is included with the...

Page 16: ...batteries for the first time charge the batteries for approximately 2 5 hours to reach full charge The scale can be used while the batteries are charging For more information see page 4 2 Calibration...

Page 17: ...weights part no 56357 To test the Smart Scale 1 Press and hold KG LB while pressing ON OFF 2 Verify that all lights illuminate 3 Place the calibration weights on the scale then confirm that the corre...

Page 18: ...2 6 OLYMPIC SMART SCALE Model 50 51 Instruction Manual Testing the Device...

Page 19: ...he scale Keep the platform ends in either the full down or full up positions Ends are locked in the full up position only when LATCHED appears see Figure 3 3 Do not allow the patient to sit or stand o...

Page 20: ...ver to set the brake step on the opposite side to release the brake see Figure 3 1 There are two locking casters on the Model 51 cart Figure 3 1 Setting the caster brake NOTE For information on averag...

Page 21: ...ee Figure 3 3 Figure 3 2 Adjusting the platform ends Figure 3 3 Locking the ends into position NOTE Lower one or both ends to accommodate the patient being weighed Whenever possible at least one platf...

Page 22: ...weight is computed the LOCKED light illuminates and the weight locks on the display Weight Lock Unlock AVERAGE UNLOCK When the LOCKED light illuminates the weight remains locked on the display Press A...

Page 23: ...t locked weight for 10 seconds and then turn off Weighing the Next Patient Before weighing the next patient the scale display must show 0 If the display is locked LOCKED light illuminates press AVERAG...

Page 24: ...3 6 OLYMPIC SMART SCALE Model 50 51 Instruction Manual Operating the Smart Scale...

Page 25: ...soap and water solution or the liquid disinfectant then wipe down all exterior surfaces of the Smart Scale Use the second cloth to dry all exterior surfaces of the Smart Scale WARNING Electrical shoc...

Page 26: ...0 minutes of continuous battery powered operation time remains If rapidly blinking the battery charge has been depleted and the scale will automatically turn off Connect the scale to a functioning ele...

Page 27: ...hen press ON OFF to enter calibration mode see Figure 4 1 confirm the following The current software version e g CAL 1 0 appears C 0 appears while the scale captures the zero point C 12500 appears pro...

Page 28: ...4 4 OLYMPIC SMART SCALE Model 50 51 Instruction Manual Calibrating the Smart Scale...

Page 29: ...wer supply printed circuit board PCB Test the power supply PCB see page 6 9 replace if necessary see page 6 12 Damaged display PCB Test the display PCB see page 6 9 replace if necessary see page 6 12...

Page 30: ...page 6 12 Dashes walk across display but scale won t show 0 Out of calibration Calibrate the scale see page 4 3 Damaged load cell Contact Natus Medical see page 5 4 Signal beyond zero capture range or...

Page 31: ...st the main PCB see page 6 9 replace if necessary see page 6 12 Scale won t lock weight on display and LOCKED doesn t illuminate Damaged main PCB Test the main PCB see page 6 9 replace if necessary se...

Page 32: ...73 Email Seattle_technical_service natus com Error code E905 Check Sum Error Non volatile memory corrupted or damaged Calibrate the scale see page 4 3 Test the main PCB see page 6 9 replace if necessa...

Page 33: ...Circuit Boards Observe proper handling cautions at all times The integrated circuits and semiconductors on the printed circuit boards PCBs can be damaged by electrostatic discharge or contamination b...

Page 34: ...cessing the socket head cap screws 4 Lift the platform assembly up to expose the weighing platform see Figure 6 3 WARNING Electrical shock hazard when the enclosure is open Unplug the power cord from...

Page 35: ...platform a Remove the two socket head cap screws and the two flat head cap screws see Figure 6 2 b Lift the weighing platform to expose the PCBs see Figure 6 3 c Place the spacer in a safe location Fi...

Page 36: ...ly 90 in lb torque to the two socket head cap screws Tighten the two flat head cap screws firmly these screws require minimal force to secure c Slide one end of the scale so that it hangs over the edg...

Page 37: ...from the back of the device Main Fuses Required parts Main fuses x2 part no 200021 To replace the main fuses 1 If the scale is on press ON OFF to turn off the scale then unplug the power cord 2 Remov...

Page 38: ...s on press ON OFF to turn off the scale then unplug the power cord 2 Disassemble the scale see page 6 2 3 Remove the pico fuse a Remove the power supply PCB see page 6 8 the pico fuse is located on th...

Page 39: ...n electrical outlet The CHARGING light will illuminate 6 Properly dispose of the nickel cadmium Ni Cad battery The internal battery pack can be recycled by contacting the Rechargeable Battery Recyclin...

Page 40: ...ble connector 4 Verify that the membrane switch panel is properly connected 5 Using two small jumper wires check the resistance of the malfunctioning switch at the corresponding pin on J2 of the displ...

Page 41: ...ower cord 2 Disassemble the scale see page 6 2 3 Remove the cable and check each wire for continuity 4 Replace any damaged PCB ribbon cables 5 Continue testing internal components or reassemble and ca...

Page 42: ...ble the scale see page 6 2 3 Check the supply voltages see Table 6 3 4 If any voltages are out of tolerance replace the power supply PCB 5 Continue testing internal components or reassemble and calibr...

Page 43: ...r supply PCB into position place and tighten the mounting screws then connect the connectors to the power supply PCB 5 Reassemble and calibrate the scale see page 6 4 then page 4 3 Testing the Display...

Page 44: ...see page 6 4 then page 4 3 Entering Counts Mode If an electrical problem is suspect such as the signal is beyond zero or the system appears unstable enter counts mode To enter counts mode 1 When the s...

Page 45: ...1 Contact Natus Customer Service for a Return Merchandise Authorization RMA number and the location where the equipment should be sent 2 Clean the device securely package it and include the RMA numbe...

Page 46: ...6 14 OLYMPIC SMART SCALE Model 50 51 Instruction Manual Returning for Service...

Page 47: ...tem number to the customer service representative NOTE Only use Natus Medical approved parts with the Smart Scale Table 7 1 Parts and accessories Item Name Description Item Number Battery pack 401391...

Page 48: ...7 2 OLYMPIC SMART SCALE Model 50 51 Instruction Manual Ordering Information...

Page 49: ...attery Pack Single pack with six 1700mAh SC Ni Cad rapid charge batteries 7 2Vdc nominal Environmental Temperature Operating 50 104 F 10 40 C Shipping 40 158 F 40 70 C Storage 4 113 F 20 45 C Relative...

Page 50: ...ing Information on page 7 1 for more information Warranty One year warranty Electromagnetic Compatibility The Smart Scale complies with the requirements of IEC 60601 1 2 2001 For information see pages...

Page 51: ...floors are covered with synthetic material the relative humidity should be at least 30 Electrical fast transient burst IEC 61000 4 4 2 kV for power supply lines 1 kV for input output lines 1 kV for po...

Page 52: ...compliance level in each frequency range 2 Interference may occur in the vicinity of equipment marked with the following symbol 1 Field strengths from fixed transmitters such as base stations for radi...

Page 53: ...mmunications equipment For transmitters rated at a maximum output power not listed above the recommended separation distance d in meters m can be estimated using the equation applicable to the frequen...

Page 54: ...8 6 OLYMPIC SMART SCALE Model 50 51 Instruction Manual Electromagnetic Specifications Manufacturer s Declaration...

Page 55: ...OLYMPIC SMART SCALE Model 50 51 Instruction Manual A 1 A p p e n d i x A Drawings and Schematics Figure A 1 Smart Scale Model 50 51 Power supply PCB assembly Drawing No 400864 Rev C...

Page 56: ...A 2 OLYMPIC SMART SCALE Model 50 51 Instruction Manual Figure A 2 Smart Scale Model 50 51 Display PCB assembly Drawing No 400866 Rev A...

Page 57: ...OLYMPIC SMART SCALE Model 50 51 Instruction Manual A 3 Figure A 3 Smart Scale Model 50 51 Main PCB assembly Drawing No 401094 Rev E...

Page 58: ...A 4 OLYMPIC SMART SCALE Model 50 51 Instruction Manual Figure A 4 Smart Scale Model 50 51 Power supply schematic Drawing No 700141 Rev...

Page 59: ...OLYMPIC SMART SCALE Model 50 51 Instruction Manual A 5 Figure A 5 Smart Scale Model 50 51 Display schematic Drawing No 700144 Rev A...

Page 60: ...A 6 OLYMPIC SMART SCALE Model 50 51 Instruction Manual Figure A 6 Smart Scale Model 50 51 Main schematic Drawing No 700152 page 1 Rev F...

Page 61: ...OLYMPIC SMART SCALE Model 50 51 Instruction Manual A 7 Figure A 7 Smart Scale Model 50 51 Main schematic Drawing No 700152 page 2 Rev F...

Page 62: ...A 8 OLYMPIC SMART SCALE Model 50 51 Instruction Manual Figure A 8 Smart Scale Model 50 51 Main schematic Drawing No 700152 page 3 Rev F...

Page 63: ...OLYMPIC SMART SCALE Model 50 51 Instruction Manual A 9 Figure A 9 Smart Scale Model 50 51 Wiring diagram Drawing No 700251 Rev A...

Page 64: ...A 10 OLYMPIC SMART SCALE Model 50 51 Instruction Manual...

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