SMARTLYTE® PLUS ELECTROLYTE ANALYZER is a Registered Trademark of Diamond Diagnostics Inc.

The Diamond Diagnostics SMARTLYTE® PLUS analyzer is for In Vitro Diagnostic use.

Diamond Diagnostics Inc

333 Fiske Street
Holliston, MA 01746

Diamond Diagnostics Kft

6 Oradna Street
1044 Budapest Hungary

2009 SMARTLYTE® PLUS ELECTROLYTE ANALYZER. All rights reserved.

Registered in the United States Patent and Trademark Office

The information in this manual was correct at the time of printing. However, Diamond Diagnostics
Inc continues to improve products and reserves the right to change the specifications, equipment, and
maintenance procedures at any time without notice.

If the system is used in a manner differently than specified by Diamond Diagnostics Inc., the
protection provided by the equipment may be impaired. See warning and hazard statements.
ECO 9099 SOP05-5090F Rev.00 Effective Date: 12/20/18 Page 2 of 58
 Important Information!
This Service Manual contains important warnings and safety information to be observed by the user.

This instrument is only intended for one area of application which is described in the instructions. The
most important prerequisites for application, operation and safety, are explained to ensure smooth
operation. No warranty or liability claims will be covered if the instrument is applied in areas other than
those described or if the necessary prerequisites and safety measures are not observed.

The instrument is only to be operated by qualified personnel capable of serving these prerequisites.

Only accessories and supplies either delivered by or approved by DIAMOND are to be used with the
instrument.

Due to the operating principle of the instrument, analytical accuracy not only depends on correct
operation and function, but also upon a variety of external influences beyond the manufacturer’s control.
Therefore, the check results from this instrument must be carefully examined by an expert, before further
measures are taken based on the analytical results.

Instrument adjustment and maintenance with removed covers and connected power mains are only to be
performed by a qualified technician who is aware of the dangers involved.

Instrument repairs are only to be performed by the manufacturer or qualified service personnel.

For a detailed service training video for your SMARTLYTE PLUS Analyzer, please visit:
http://www.diamonddiagnostics.com/video/video_SMARTLYTE PLUS.htm

Symbol Explanation

Attention symbol - Refer to the Operator's Manual or Service Manual for further
instructions. This symbol is located on the inside of the instrument.

Type B instrument symbol - An instrument of the B type falls under safety categories
I, II, or III, or has an internal power supply providing the required insulation against
discharge current and reliable ground connections.

Important Information!

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 Operating Safety Information
• This instrument falls under Safety Category I.
• This instrument is a Class B instrument.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference's, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Warning: Changes or modifications to this unit not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.

Note: This equipment has been checked and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communication. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does not cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio TV technician for help

Caution:
• The instrument is designed as a conventional device (closed, not waterproof type).
• Do not operate the instrument in an explosive environment or in the vicinity of explosive
anesthetic mixtures containing oxygen or nitrous oxide.
• This instrument is suitable for continuous operation.
• The power plug is to be plugged into a ground socket only. When using an extension cord, make
sure that it is of the proper size and is properly grounded.
• Any breakage of the ground lead inside or outside the instrument or a loose ground
connection can cause a hazardous condition when operating the instrument. Intentional
disconnection of the grounding is not permitted.
• When handling electronic components such as – CPU, RFID PCB, Interface-PC, and printer PCB
– ESD (Electronic Sensitive Device) protection is recommended. ESD mats should be used when
handling and working with these electronic components. ESD packaging is recommended for
transportation.

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 Table of Contents

1. Introduction ................................................................................................................................................. 7
1.1. General Description ............................................................................................................................ 8
1.1.1. Measurement .................................................................................................................................. 8
1.1.2. Operating Configurations .............................................................................................................. 8
1.2. Software Operation ........................................................................................................................... 10
1.3. Description of Modules.................................................................................................................... 11
1.3.1. Mechanical Assemblies ............................................................................................................... 11
1.3.1.1. Front Door Assembly ............................................................................................................... 11
1.3.1.2. Rear Panel Subassembly ........................................................................................................ 14
1.3.1.3. Power Supply Subassembly ................................................................................................... 15
1.3.1.4. Power Inlet Module Subassembly ......................................................................................... 16
1.3.1.5. CPU Board (CN-A4405) .......................................................................................................... 17
1.3.1.6. Aspiration Assembly................................................................................................................. 21
1.3.1.7. Electrode Tray Assembly ........................................................................................................ 26
1.3.1.8. Peristaltic Pump Rotor (CN-A4014)....................................................................................... 29
1.3.1.9. Peristaltic Pump Motor............................................................................................................. 30
1.3.1.10. Solenoid Valve System ........................................................................................................ 31
1.3.1.11. Printer Assembly (CN-A4060)............................................................................................. 34
1.3.1.12. RFID Board (CN-A4054)...................................................................................................... 36
1.3.1.13. Valve Board (CN-A4018) ..................................................................................................... 36
1.3.1.14. Display Board (CN-A4406) .................................................................................................. 38
1.3.1.15. Interface PC ........................................................................................................................... 39
1.4. Fluidic Modules.................................................................................................................................. 40
1.4.1. Standard A..................................................................................................................................... 40
1.4.2. Standard B and C ......................................................................................................................... 40
1.4.3. Reference Solution ...................................................................................................................... 40
1.4.4. Waste Liquids ............................................................................................................................... 40
1.4.5. Fluidic Flow Path .......................................................................................................................... 41
1.4.6. Pinch Valve Tubing Set (AV-BP5193) ...................................................................................... 42
1.4.7. Fluidic Diagram ............................................................................................................................. 45
1.5. Electronics .......................................................................................................................................... 46
1.5.1. Block Diagram of SmartLyte® Plus ........................................................................................... 46
1.5.2. CPU Board .................................................................................................................................... 46
1.5.3. Power Circuits ............................................................................................................................... 48
1.5.4. Microcontroller .............................................................................................................................. 48
1.5.5. EMF and Noise Shielding ........................................................................................................... 48
1.5.6. Fluid Pack Sensor ........................................................................................................................ 48
1.5.7. Valve Drivers ................................................................................................................................. 49
1.5.8. Pump Motor Driver ....................................................................................................................... 49
1.5.9. Input Amplifiers ............................................................................................................................. 49
1.5.10. Temperature Sensor circuit..................................................................................................... 49
1.5.11. Analog Channel and A/D Converter ...................................................................................... 49
1.5.12. CPU board Connector ............................................................................................................. 49
1.5.13. Valve Board ............................................................................................................................... 49
1.5.14. Display Board ............................................................................................................................ 50
1.5.15. Printer ......................................................................................................................................... 50
1.5.16. Shielding and Grounding ......................................................................................................... 50
1.5.17. Interface PC............................................................................................................................... 50
2. Scheduled Maintenance ......................................................................................................................... 51
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 Table of Contents
2.1. Daily ...................................................................................................................................................... 51
2.2. Weekly Maintenance ......................................................................................................................... 51
2.3. Monthly Maintenance ....................................................................................................................... 51
2.4. Six Month Maintenance ................................................................................................................... 51
2.5. Annual Preventive Maintenance.................................................................................................... 51
3. Troubleshooting ....................................................................................................................................... 52
3.1. Error Messages and Troubleshooting ......................................................................................... 52
4. Parts List .................................................................................................................................................... 58
4.1. Consumables...................................................................................................................................... 58
4.2. Analyzer Parts for Repair ................................................................................................................ 58

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 1 Introduction

1. Introduction
®
The Service Manual for the SmartLyte Plus Electrolyte Analyzer contains the technical information
needed to ensure easy fault identification. This manual is intended to be complementary to the Operator's
Manual where detailed instructions for operation, maintenance and troubleshooting are provided.

As for all clinical instrumentation, a thorough understanding of the principles of operation is prerequisite to
attempting service of this product. Training along with experience will enhance the use of this manual.

®
Service and repair of the SmartLyte Plus analyzer should be performed only by qualified repair
technicians. Care should be taken when removing the covers as hazardous voltages are exposed. Use
only accepted electronic check procedures and static protection when replacing and handling all
electronic parts.

This manual is divided into 4 chapters to facilitate location of technical information. Chapter 1 includes all
mechanical, fluidic and electronic assemblies are described. Chapter 2 outlines routine maintenance and
troubleshooting procedures. Chapter 3 includes troubleshooting, including error messages. Finally,
Chapter 4 includes part identification.

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 1 Introduction

1.1. General Description

1.1.1. Measurement

SampleTypes: Whole Blood, Serum, Plasma, QC Material, Aqueous

Reported Parameters Range Measurement Resolution

+
Sodium, Na 40 - 200 mmol/L 0.1 mmol/L
+
Potassium, K 1.5 -15 mmol/L 0.01 mmol/L
-
Chloride, Cl 50 - 200 mmol/L 0.1 mmol/L
++
Calcium, Ca 0.3 - 5.0 mmol/L 0.01 mmol/L
+
Lithium, Li 0.2 – 5.5 mmol/L 0.001 mmol/L

Sample Type: Urine

Reported Parameters Range Measurement Resolution

+
Sodium, Na 1 - 300 mmol/L 1 mmol/L
+
Potassium, K 5 - 120 mmol/L 0.1 mmol/L
-
Chloride, Cl 50 - 200 mmol/L 1 mmol/L
Calcium and Lithium are not measured in urine samples.

1.1.2. Operating Configurations

Sample type Whole blood, serum, plasma, urine, QC material, Aqueous samples
Sample device Syringe, sample cup, collection tube
Sample size 95 uL
Analysis time 28 seconds
Sample rate 128 per hour
Sodium (Na+) sensor Ion-selective, flow-through, glass capillary electrode
Potassium (K+) sensor Ion-selective, flow-through, liquid membrane electrode
Chloride (Cl-) sensor Ion-selective, flow-through, liquid membrane electrode
Calcium (Ca++) sensor Ion-selective, flow-through, liquid membrane electrode
Lithium (Li+) sensor Ion-selective, flow-through, liquid membrane electrode
Reference System Open liquid junction calomel electrode
Calibration Fully automatic
1 point with each sample
2 point every 4 hrs (Lithium, 3 point)
Warm-up time 2 minutes
Temperature Room temperature, 15 - 32° C, 60 - 90° F
Humidity Maximum 85% relative humidity, non-condensing
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 1 Introduction

Data management Quality Control memory storage, 3 levels, 500+ values each;
Calculation of mean, standard deviation, coefficient of variation (CV)
Samples, 10000+ measurements
Diagnostic Programs Tests selected in Diagnostic Menu
Electronics Microprocessor-controlled and Interface-PC
Display Graphical touch screen, 800 x 400 pixels
Printer Integral thermal printer, 16 character width
Interface RS232C Serial Port
4 USB Ports
LAN/Ethernet
Electrical requirements 100 - 240 V, 50/60 Hz,
1.4 A max.
Self-adjusting
Nominal power
Consumption Minimum 10W/hour
Typical 25W/hour
Maximum 35W/hour
Dimensions
Height 335 mm; 13.2"
Width 315 mm, 12.4"
Depth 295 mm; 12.0"
Weight approx. 6kg; 14 lbs;

Classifications
Safety category I
Device Type B (according to EN 60601-1, 6010-2-101)
Mode of operation Continuous
Protection class IP 20
Explosion protection The device is not designed for operation in explosive environments.

Approvals CSA C22.2, EN 61010-1, CE, FCC Class B

Data subject to change without notice. Technical information is supplied for general informational
purposes only.

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 1 Introduction

1.2. Software Operation

®
Software operation of the SmartLyte Plus analyzer is accessed through the touch screen buttons. There are two
Main Menus from which all functions can be accessed. Through the Operations Menu, the Diagnostics function
can be access to aid in servicing the instrument.

Operations

Figure 1-1 Main Menu

Measurment

Figure 1-2 Measurement Menu

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 1 Introduction

1.3. Description of Modules

1.3.1. Mechanical Assemblies

1.3.1.1. Front Door Assembly

The front door assembly is comprised of the following parts,

1. Front Door

2. Plastic Window

3. EMI Window

4. Door Magnets

Plastic Window
on Front

Front Door
Assembly

Figure 1-3 Front Door Assembly, Front View

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 1 Introduction

EMI Window Right Hinge Pin

beneath Plastic

Copper Conductive
Tape

Door Magnets

Figure 1-4 Front Door Assembly, Rear View

To remove the front door from the analyzer;

1. Move the analyzer to the edge of a work surface so the analyzer door, when opened, will
extend beyond and below the work surface.

2. Remove the red ground connector from the Right Angle Tab by grasping the red connector
and pulling to the left exposing the Right Angle Tab. (Figure 1-5)

Ground Connector

Figure 1-5 Door Ground Connector, Red

3. Then remove the ground screw, external tooth washer, right angle tab, and hex nut. (Figure
1-6)

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 1 Introduction

Hex Nut

Right Angle Tab

External Tooth
Washer

Ground Screw
Figure 1-6 Door Hinge Attachment Details

4. With one hand, hold the analyzer door near the right side hinge pin. (Figure 1-7)

5. Ensure the door is not on the work surface.

6. With the other hand, gently apply pressure to the middle rear area of the door. This will flex
the door slightly and allows the right hinge pin to clear the retaining hole in the main chassis.

7. Remove the right hinge pin then the left so the door can then be removed from the analyzer.
(Figure 1-7).

Right Hinge

Apply Gentle
Pressure

Figure 1-7 Door Details for Removal

The window is comprised of two layers, the EMI window and the plastic window. Both can be
replaced in the field.

1. From the rear side of the door, (Figure 1-4), gently press the window and snapping the EMI
and plastic window out the front side of the door.

2. Verify that the copper conductive tape is still adhered to the both the front and back surface
of the door.

3. Remove adhesive backing from the EMI Window.

4. Place the EMI Window first over the opening on the front side of the door.

5. Press along the frame of the window and ensure good contact of the EMI window with the
copper tape on the frame of the window.

6. After removing the adhesive backing, apply the plastic window over the EMI window pressing
along the frame again to ensure good contact.

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 1 Introduction

1.3.1.2. Rear Panel Subassembly

The Rear Panel Subassembly contains the Power Supply Subassembly, the Power Inlet Module
and the External Communication Board. To separate the Rear Panel Subassembly, (Figure 1-8)
from the Front Case perform the following steps,

Interface PC with 4
USB Ports & LAN
connection

Com Board Ribbon

Cable Connector

Black Power Inlet

Module

Power Supply
Module

Figure 1-8 Rear Panel with Connectors and Power Supply

1. Ensure power is off.

2. Disconnect RS232 cable if attached.

3. Disengage the 4 screws in the corners of the back case.

4. Move the back case a few inches away from the chassis.

5. Disconnect cables and wires so that the rear case can be separated from the front case.
(Figure 1-8)

Interface PC
Ribbon Cable

Power Supply Ground

Connector Tab

Red Instrument
Ground Connector

Figure 1-9 Connectors and cables on CPU board

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 1 Introduction

6. Disconnect the communication ribbon cable from the External Communication Board on the
back panel leading to the Display Board.

7. Disconnect the power supply cable attached to the CPU board by depressing the locking clip
on the left side of the connector and gently pulling the power cable out.

8. On the left side of the chassis, pull the top red grounding wire connector off.

9. Separate the rear panel from the front panel.

1.3.1.3. Power Supply Subassembly

To access the Power Supply Subassembly, the Rear Panel must be removed first.

1. Ensure the power is off.

2. Remove the Rear Panel according to Section 1.3.1.2

3. Disconnect the Power Inlet Module Connector (Figure 1-10)

Power Inlet
Module Connector

Black Power Inlet

Module

Red Ground
Connectors

Figure 1-10 Rear Panel with Power Supply and Main Power Receptacle

4. Remove Ground Cables from Power Inlet Module and left side of Dual Tab.

5. Finally, remove the four screws securing Blue Ring Connector and the Power Supply
Mounting Plate to the Rear Panel. (Figure 1-10 screws circled in red)

6. The Power Supply Subassembly can be removed, (Figure 1-11)

Power Supply
Connect To
Mounting Plate

Power Supply
Connector to CPU
Board

Figure 1-11 Power Supply and Ground Cable Assemblies

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 1 Introduction

Connect to Right
side of Dual Tab

Side of Dual Tab

Connect to Left
side of Dual Tab

Connect to Power
Inlet Module

Figure 1-12 Ground Cable Assemblies

1.3.1.4. Power Inlet Module Subassembly

The Power Inlet Module can be found on the Rear Panel (Figure 1-13), to separate from the Rear
Panel.

1. First follow the instructions in Section 1.3.1.2 to separate the Rear Panel from the Front
Case.

2. Remove Ground Wire from the Power Inlet Module.

Power Inlet
Module

Power Inlet
Module Connector

Ground Wire
Connector

Figure 1-13 Rear Panel with Power Inlet Module

3. Turn over the Rear Panel.

4. Remove the two screws on the external face of the Rear Panel. (Figure 1-14)

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 1 Introduction

Figure 1-14 Power Inlet Module removal

Figure 1-15 Power Inlet Module

1.3.1.5. CPU Board (CN-A4405)

The CPU board can be replaced when there is a malfunction. ESD precautions should be
exercised to prevent damaging the electronic components. To remove and replace the CPU;

1. First remove the Rear Panel according to instructions in Section 1.3.1.2 to expose the CPU
board.

2. Once the Rear Panel is removed, unplug the Display cable from the CPU board.

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 1 Introduction

Display Cable

Interface PC
Ribbon Cable

Alignment Pin

Valve Board
Connector

CPU Screws, 6

Top Grounding
Screw

Power Cable
Connector
Figure 1-16 Connectors and cables on CPU Board

3. On the CPU board, unclip the top and bottom tabs of the valve board connector. Holding the
locking tabs open at the same time helps to push the ribbon cable connector out of the CPU
connector.

4. Move the valve ribbon cable to the side.

5. Remove the 6 screws with their plastic washers that hold the CPU board to front case.
(Figure 1-16 circled in red).

6. Carefully pull the CPU board off the alignment pin (Figure 1-16 circled in white). Ensure the
RFID board and the printer is not dislodged.

7. Handle board carefully so as to not damage the Electrode Pins on the front of the CPU
board.

8. Each Pin can be removed by pulling the Electrode Pin from its socket. (Figure 1-19)

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 1 Introduction

Figure 1-17 Front Case Assembly, No CPU Board

9. Lay the board on an ESD mat or packaging.

Display Cable
Connector

Shield

Valve Board
Connector

RS232 Serial
Port

Power Cable
Connector

Figure 1-18 CPU Board, Back

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 1 Introduction

Printer
Connector

Electrode Pogo
Pin Socket

Electrode Pogo
Pin

Optical Sensor

RFID Board
Connector

Figure 1-19 CPU Board, Front

To install the CPU board, certain steps should be taken to ensure proper placement.

1. Ensure RFID board is installed with its components and antenna facing the Electrode Pins.

2. Pull each Electrode Pin out slightly so that they extend beyond their normal positions. This
will prevent Electrode Pins from being pushed too far into the socket.

3. Place board on alignment pin. (Figure 1-16)

4. Check that Electrode Pins are placed in front case without pushing pins into their sockets.

5. Also verify RFID board is not dislodged.

6. Secure CPU Board to the front case using the screws and plastic washers, previously
removed. Leave screws slightly loose.

7. Check that each Electrode Pin is entirely visible through the Electrode mating holes. (Figure
1-19)

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 1 Introduction

5 Electrode Pin
Mating Holes

Figure 1-20 Electrode Mating Holes

8. If pins are not all visible, adjust the position of the CPU board.

9. When all pins are visible, tighten all screws without over tightening.

1.3.1.6. Aspiration Assembly

This module is comprised primarily of two subassemblies, the Aspiration Sub-Assembly and the
Sample Probe.

Sample Door

White Sample
Probe Holder Block

Aspiration
Sub-assembly

Sample Probe

Fill Port

Figure 1-21 Aspiration Assembly

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 1 Introduction

On the Aspiration Assembly, the sample probe and fill port are designed for easy replacement.

1. Sample Probe Assembly, AV-BP5006D. (Figure 1-21)

2. Aspiration Sub-Assembly, CN-A4010 (Figure 1-21)

3. Fill Port Sub-Assembly, AV-BP9043D (Figure 1-21)

Intake Tubing

Probe

Figure 1-22 Sample Probe Assembly AV-BP5006D

Sample Door

Figure 1-23 Aspiration Subassemlby, CN-A4010

Fill Port Holder

Fill Port

Figure 1-24 Fill Port Assembly, AV-BP9043D

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 1 Introduction

The sample probe assembly (Figure 1-22) is comprised of the probe and the intake tubing. The
assembly can be removed as one-piece from the Aspiration Assembly. To remove,

1. First, if the instrument is on, place in Hold in Maintenance mode to prevent reagents from
cycling.

2. (Main Operations Menu>>>Maintenance>>>Hold in Maintenance)

3. Disconnect the intake tubing from the sample sensor on the right side of the electrode tray.
(Figure 1-25)

4. Open the sample door (Figure 1-23).

5. Grasp the probe near the white holder block, pull up to rotate and unsnap the sample probe
from its position. (Figure 1-21)

It is recommended to replace the Sample Probe each year. To replace the Sample Probe
assembly;

1. Align the bottom of the sample probe in the white Sample Probe holder block and press the
replacement assembly into place.

2. Press the top of the sample probe near the intake tubing to ensure the probe is completely
snapped into the white Sample Probe Holder.

3. Connect the intake tubing to the sample sensor.

Intake Tubing,
Connected

Sample Sensor

Figure 1-25 Connect Tubing to Sample Sensor

The fill port can be removed and replaced as a complete assembly. It can also be disassembled
and cleaned if desired. To remove the fill port assembly;

1. Pull the fill port holder towards the front for easy access. (Figure 1-26)

White Fill Port

Holder

Fill Port

Fill Port Tabs

Figure 1-26 Fill Port

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 1 Introduction

2. Press the two plastic tabs on the fill port to allow removal of the fill port from the fill port
holder. (Figure 1-26 and 1-27)

Figure 1-27 Fill Port Removed from Holder

To remove the aspiration assembly Rear Panel (Figure 1-28) which contains the Power Supply,
Power Inlet Module, USB and Ethernet connectors must be removed first

Ethernet. USB Ports

Com Board Ribbon

Cable connector

Power Supply

Figure 1-28 Rear Case with Connectors, Power Supply

1. Ensure power is off before proceeding.

2. Disconnect RS232 cable if attached.

3. Disengage the 4 screws in the corners of the back case.

4. Move the back case a few inches away from the chassis.

5. Disconnect cables and wires so that the rear case can be separated from the front case.
(Figure 1-29)
a. Disconnect the communication ribbon cable from the Communication Board on the
back panel leading to the Display Board.

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 1 Introduction

b. Disconnect the power cable attached to the CPU board by depressing the locking clip
on the left side of the connector and gently pulling the power cable out.
Once the CPU board has been removed, the Aspiration Sub-Assembly can be removed.

1. The cable on the far left side of the valve board is the aspiration assembly connector. Press
the connector tab to disconnect. (Figure 1-29)

Valve Board

Aspiration Sub-
Assembly
Connector

Rear Hex
Screw

Figure 1-29 Connectors and cables on CPU Board

6. Remove the two rear screws using a hex key (Figure 1-29)

7. Then, remove the front securing screw using the same hex key. (Figure 1-30)

Front Hex
Screw

Reagent Supply
Tubing (tagged
red)

Figure 1-30 Front Hex Screw for Aspiration Sub-Assembly

10. Check that the sample intake tubing is disconnected from the sample detector. (Figure 1-25)

11. Disconnect the reagent supply tubing (red tag) from beneath the fill port. (Figure 1-30)

12. The aspiration assembly can now be removed from the front of the analyzer for replacement.

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 1 Introduction

1.3.1.7. Electrode Tray Assembly

This assembly is comprised of the electrode tray and the sample sensor, AV-BP5036D. (Figure
1-31)

Sample Sensor

Electrode Tray
Base

Figure 1-31 Electrode Tray with Sample Sensor

To remove the electrode tray assembly from the analyzer;

1. First, if the instrument is on, place in Hold in Maintenance mode to prevent reagents from
cycling. (Main Operations Menu>>>Maintenance>>>Hold in Maintenance)

2. Disconnect the sample sensor cable from the analyzer. (Figure 1-31)

3. Remove the sample intake tubing on the right side of the assembly where the sample sensor
is located. (Figure 1-31)

Sample Sensor
Connector

Sample Intake
Tubing

Waste Tube
(tagged Green)

Reference Tubing
Connector
Figure 1-32 Electrode Tray with electrodes installed

4. Unplug the Reference Tubing Connector

5. Disconnect the waste tube (green tag) from the left side of the electrode tray.

6. Use one hand to press the Electrode Tray Plastic Tabs toward the center.

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 1 Introduction

7. At same time, place fingers over the electrodes and thumb below the electrode tray, pull the
tray towards. (Figure 1-33) The Electrode Tray should slide out easily and electrode pins will
be out of the mating holes.

Figure 1-33 Pulling Electrode Tray Towards you

8. Use each hand to press the plastic tabs on the right and left side of the electrode tray
assembly towards the center of the tray.

9. Slide the Electrode Tray towards you to completely release the tray and remove the
assembly from the analyzer. (Figure 1-34)

Plastic Tabs Plastic Tabs

Figure 1-34 Electrode Tray Locking Tabs

The sample sensor (on the right) and the electrode locking mechanism (on the left) can be
removed and replaced by removing the screws on the underside of the tray. (Figure 1-35)

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 1 Introduction

Figure 1-35 Locking Mechanism Installation

Figure 1-36 Sample Sensor Installation

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 1 Introduction

1.3.1.8. Peristaltic Pump Rotor (CN-A4014)

The Peristaltic Pump Rotor works with the Peristaltic Pump Motor to manage all fluid flow through
the analyzer. (Figure 1-37)

Peristaltic
Pump Rotor

Figure 1-37 Peristaltic Pump Rotor on Analyzer

To Remove the Rotor;

1. Unwind front and back Peri-Pump tubing from the Motor shaft. (Figure 1-38)

Back Tubing

Front Tubing

Figure 1-38 Unwinding Peri-Pump Tubing

2. Grasp the Rotor Assembly firmly and pull away from the instrument.

To install the Rotor Assembly;

1. Align the rotor flat interface with the flat on the motor shaft.(Figure 1-39)

Flat Surface

Figure 1-39 Peristaltic Pump Rotor

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 1 Introduction

2. Press the replacement roller onto the instrument.

3. There will be a small gap between the roller and the surface of the instrument.

1.3.1.9. Peristaltic Pump Motor

The Peristaltic Pump Motor manages all fluid flow in the analyzer through the Peristaltic Pump
Rotor. These are the steps for removing the motor.

1. Remove the Peristaltic Pump Rotor according to the procedure above, Section 1.3.1.8.

2. Remove the rear panel and CPU Board as described in Section 1.3.1.2.

3. Locate the Pump Motor electrical connector plugged into the valve board. (Figure 1-40)

4. Disconnect the motor connector (Figure 1-40).

Valve Board

Pump Motor
Connector

Pump Motor
Figure 1-40 Connectors and cables on CPU board, Pump Motor

5. On the front of the analyzer remove the four screws holding the motor in place.

Figure 1-41 Pump Motor Mounting Screws

6. The motor can now be removed from the back side of the instrument.

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 1 Introduction

Figure 1-42 Peristaltic Pump Motor

1.3.1.10. Solenoid Valve System

The Solenoid Valve System is comprised of the solenoid valve subassembly, CN-A4015, the
crimp pin, CN-4155, and the indicator cap, CN-4018. The Crimp Pin applies pressure to the
tubing to shut off fluid flow. The Indicator Cap holds the Crimp Pin in place.

Figure 1-43 Peristaltic Pump Motor

Motor Shaft

Crimp Pin

Indicator Cap/
Opening

Figure 1-44 Crimp Pin, and Indicator

There are 5 solenoid valves, one each for Standard A (A), Standard B (B), Standard C (C),
Reference Solution (R), and Air (V). The removal of each solenoid valve is identical. (Figure 1-
45)

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 1 Introduction

V Valve Solenoid
Screws

Figure 1-45 Valve positions

Solenoid Valve assembly removal requires the removal of the indicator cap and crimp pin first.
Proceed as follows;

1. If the instrument is on, place in Hold in Maintenance mode to prevent reagents from cycling
and valves from activating.
(Main Operations Menu>>>Maintenance>>>Hold in Maintenance)

2. Locate the opening of the indicator cap where the solenoid shaft is visible. Orient opening
upwards.

Indicator Cap
Opening

Figure 1-46 Valve positions

3. Push down on Indicator cap in the direction of the arrow to slide it off the solenoid valve shaft.

4. Then, remove the Crimp Pin from the solenoid shaft.

To install the crimp pin and cap, the instrument must be on.

1. Place the instrument in Hold in Maintenance mode.

(Main Operations Menu>>>Maintenance>>>Hold in Maintenance)

2. Access the Check Valve menu in Diagnostic Menu.

(Main Operations Menu>>>Diagnostics>>>Check Valves)

3. Press the button for the valve that needs the Crimp Pin and Indicator Cap installed.
(Check Valves>>>Check Valve A (B, C, R or V)

4. This energizes the solenoid and the shaft is extended to the outer most position

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 1 Introduction

5. In this position, place Crimp Pin on the solenoid shaft.

6. Orient the opening of the Indicator Cap on the shaft and snap on by sliding in the direction of
the arrow.

7. If the solenoid shaft retracts before the Crimp Pin and Indicator Cap are in place, press ON
button to re-energize and move the shaft.

8. When finished, exit menu by pressing CANCEL.

To remove the entire Solenoid Valve Sub-Assembly;

1. First follow the steps above for the removal of the Indicator Cap and Crimp Pin.

2. Remove the two screws on each side of the solenoid shaft. (Figure 1.44)

3. Remove the rear panel and the CPU Board as described in Section 1.3.1.2.

4. Each solenoid has an electrical connection to the valve board which must be unplugged prior
to removal of the solenoid. (Figure 1-47)

5. Snip the tie wrap to separate the cables.

Retaining Ring

Valve Board

Connectors

Figure 1-47 Solenoid Valves and Electrical Connections

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 1 Introduction

1.3.1.11. Printer Assembly (CN-A4060)

The printer is a graphics printer mounted to a board which is connected directly to the CPU
board. It uses thermal paper, AV-BP5025D.
It is important to follow the instructions below to avoid damage to the printer or CPU board.

Printer Board
Guides

Printer Paper
Feed Button

Printer Paper

Printer Paper
Tray

Figure 1-48 Graphic Printer

1. Ensure the power to the instrument is off before removing the printer.

2. Open the Main Door so that the printer compartment is fully exposed.

3. Partially slide the paper tray out

4. Tear the paper roll from the printer and completely remove the paper roll and the paper tray.
Do not pull the paper from the printer as this can damage the printer.

5. To remove paper from the printer, press the feed button.

6. Slide fingers under the printer green board along the side to the back until an opening is
detected.

7. Holding by the opening, pull the printer towards you along the printer board guides on the
analyzer until the printer is disengaged from the CPU board

8. Then remove the assembly from the front of the analyzer.

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 1 Introduction

Figure 1-49 Printer Assembly, CN-A4060

Removal of the printer should be performed for replacement and for removal of a paper jam. To
replace the printer;

1. Ensure the instrument is off.

2. Locate the printer board guiding tracks and slide a printer onto the analyzer.

3. Press the printer firmly into place to ensure proper connection to the CPU board.

4. Verify the printer is working by running a printer test under the Diagnostic Menu.
(Main Operations Menu>>>Diagnostics>>>Check Printer)

5. Compare the print out to Figure 1.50 to verify correct function.

Figure 1-50 Pinter test

Note: Never attempt to dislodge paper from the printer with a paper clip or similar object
to avoid damage to the print head or printer platen.

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 1 Introduction

1.3.1.12. RFID Board (CN-A4054)

The RFID board is attached to the CPU board at JP10. (Figure 1-29 CPU Board, Front)

The RFID board can be accessed after removal of the CPU board as described in Section
1.3.1.5.

This board must be connected all the time to the CPU board for proper functioning of the
instrument.

DO NOT unplug the RFID board while the CPU board is powered ON. Irreparable damage may
occur.

RFID
Antenna

RFID
Components

Connector to
CPU Board

Figure 1-51 RFID Board

1.3.1.13. Valve Board (CN-A4018)

Valve board has multiple connections to devices on a single platform. The Aspiration Assembly,
Solenoid Valves, Peri-Pump Motor, all plug into the valve board. The lamp that lights the
measurement pathway is also located on this board. To access the board;

1. The Rear Panel and CPU with RFID boards, described in Section 1.3.1.2 must be removed.

2. Remove one screw with washer on the right side which holds the board in place. (Figure
4.36 below)

3. Then remove the seven electrical connectors, aspiration, solenoid valves, pump motor, to
slide this board out.

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 1 Introduction

Valve Board Ribbon

Cable and Connector Valve Board

Washer & Screw to

secure Valve Board

Peri-Pump
Motor Plug

Solenoid Valve
Plugs

Aspiration
Figure1-52 Valve Board Assembly Plug

The top side of the Valve Board has three lamps that illuminate the measurement pathway
when fluids flow.

Lamps

Figure 1-53 Valve Board, Top

The Bottom side of the Valve Board seven connectors for the Aspiration Assembly, Solenoid
Valves and Pump Motor.

Figure 1-54 Valve Board, Bottom

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 1 Introduction

1.3.1.14. Display Board (CN-A4406)

The Rear Panel and CPU board, referenced in Section 1.3.1.2 must be removed to gain
complete access to the display board. To remove the display board;

1. Follow the steps for removing the Rear Panel in Section 1.3.1.2

2. Then follow all steps for removal of the CPU board.

3. Unplug the sample sensor cable from the front.

Display Spacers

Display Screws

Figure 1-55 Valve Board, Front

4. Then remove three screws and each of the 50 degree spacers to remove the display board.

Display Screen

Sample Sensor
Connector
Figure 1-56 Valve Board, Front

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 1 Introduction

Display Cable
Connector

Data Module
Connector

Figure 1-57 Valve Board, Rear

1.3.1.15. Interface PC

This unit is located on the Rear Panel.(See figure 4.42)

Interface PC
Module

SD Card

Figure 1-58 Interface- PC

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 1 Introduction

1.4. Fluidic Modules

1.4.1. Standard A

Standard A, STD A, is drawn to the electrode module by a vacuum provided by the peristaltic
pump. When STD A is to be aspirated into the electrode module, solenoid valve A is opened and
solenoid valves B, C, V and R are closed.
STD A is drawn from the Fluid Pack, to the fill port, through the sample probe up to the sample
sensor. When the sample sensor detects fluid, solenoid valve V is opened and solenoid valve A is
closed. The peristaltic pump continues to pump STD A into the electrode module. At the trailing
edge of the STD A is air.
When the sample sensor detects air, the peristaltic pump stops. Standard A should fill the
electrode module. During the time STD A is aspirated into the electrode module, the reference
housing is pressurized due to the peristaltic pump providing pressure to the reference solution
line and solenoid valve R being closed. A small amount of reference solution is forced out through
the reference junction to provide contact to the sample.
Once measurement is complete, the peristaltic pump moves the fluid back to the Fluid Pack into
the Waste Container.

1.4.2. Standard B and C

The process for STD B and STD C is identical to that of STD A with the exception of the
operation of solenoid valves B and C. These solenoid valves are operated in reverse order of
STD A aspiration.

1.4.3. Reference Solution

The reference solution is circulated back into the Reference Solution container in the Fluid Pack.
The reference housing has an in and an out port. It is filled automatically using the second
winding of the peristaltic pump and solenoid valve R. The reference solution connector allows for
the reference housing tubing to be plugged into the reference solution circuit. As the peristaltic
pump aspirates reference solution, solenoid valve R is opened to allow excess solution to be
pumped into the reference return line of the Fluid Pack.

1.4.4. Waste Liquids

Calibration standards and sample waste are all pumped out of the left side of the electrode tray
(green-banded tubing) through the peristaltic pump to the waste line and into the waste bag of the
Fluid Pack. The Waste Container has an internal one-way valve is incorporated to prevent waste
material from leaking out of the Fluid Pack.

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 1 Introduction

1.4.5. Fluidic Flow Path

Figure 1-59 Fluid Flow

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 1 Introduction

1.4.6. Pinch Valve Tubing Set (AV-BP5193)

The pinch valve tubing set contains all tubing required for the analyzer. The tubing set has a pre-
cut tubing, a harness with fluidic interconnections preassembled. The Peristaltic Pump Tubing,
AV-BP5027D, is also included in the set. (Figure 1-60)

 Waste Out

↑
Reference
In
Reference Out

< --Waste In

Figure 1-60 Pinch Valve Tubing Set Diagram

Replacement of the tube set should be performed annually. Follow the procedure below;

1. Place the instrument in Hold in Maintenance mode to prevent reagents from cycling.
(Main Operations Menu>>>Maintenance>>>Hold in Maintenance)

2. Remove the Fluid Pack from the reagent compartment.

3. Next, follow the procedure outlined in Section 1.3.1.10 to remove the indicator cap and crimp
pin from each solenoid valve. This facilitates the removal of tubing from each solenoid.

4. Pull the two pump tubes of the peristaltic pump tube set off the pump rotor.

5. Unplug the reference from the connector. Use a towel to absorb any reference solution that
leaks from the housing

6. Pull out the white reference solution tube connector.

7. Gasp the front of the white TPR block and slide it out of the analyzer towards you.

8. Disconnect the green tagged tube from the electrode tray and the red tagged tube from the
bottom of the fill port.

9. Remove and discard all tubes.

10. Remove parts from the tubing kit which include the tubing harness, green tagged waste tube
and Peristaltic Pump Tubing separately.

11. Connect the green tagged tube to the electrode tray as shown in Figure 1-62.

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 1 Introduction

12. Connect the waste tube from the TPR block to the Peristaltic Pump.

13. Connect the reference out tube to the Peristaltic Pump.

14. Connect the reference tube from the reference solution connector to the peristaltic pump.
Ensure the reference tubing’s are connected correctly. Misplacement will cause malfunction
of the reference electrode.

15. Slide the TPR block into place.

16. Pull tubes out below the TPR block on left side.

17. Install the reference tube and reference solution tube connector.

18. Place tubing into Left Guide Track, with shortest first (Waste In) to the longest, Standard A.

19. Place all Standard A, B, C, Reference solution and Air tubings into their tracks followed by
their respective crimp pin then the indicator cap.

20. Snap peristaltic pump into place.

21. Connect the red tagged tube to the bottom of the fill port.

22. Connect the green tagged tube to the Electrode Tray.

23. Install the Fluid Pack and run Prime All to fill reagent lines.
(Main Operations Menu>>>Maintenance>>>Prime All).

Peristaltic
TPR Tubing Pump Tubing
Cradle

Green
Tube Blue
Tube

Red
Tube

Figure 1-61 Pinch Valve Tubing Set Diagram

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 1 Introduction

R
V

Figure 1-62 Pinch Valve Tubing Set Diagram

R: Reference A: Standard A V: Vent

B: Standard B
C: Standard C

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 1 Introduction

1.4.7. Fluidic Diagram

SmartLyte® Plus FLUIDIC DIAGRAM

Figure 1-63 Fluidic Diagram

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 1 Introduction

1.5. Electronics

1.5.1. Block Diagram of SmartLyte® Plus

®
SmartLyte Plus consists of 2 controller boards – CPU board and interface-PC board. Both the
boards communicate over the interconnected flat ribbon cables. Figure below represents the top
®
level electronic design of the SmartLyte Plus.

Figure 1-64 Architecture showing top level electronic design

1.5.2. CPU Board

Figure 1-64 shows CPU block diagram. CPU board is responsible for following peripherals/features:

• Pump
• Valve
• Printer
• RS232 LIS
• Lamp
• Temperature Sensor
• Sample Sensor
• Signal processing
• RFID
• Fluid pack sensor
• Door
• Buzzer
• Power distribution

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 1 Introduction

Figure 1-65 CPU board block diagram

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 1 Introduction

1.5.3. Power Circuits

Power is supplied to this circuit board through connector JP1 from the power supply
assembly. Check points are provided to measure supply voltages. The following list identifies
the check points.

TEST POINT VOLTAGE TEST POINT VOLTAGE

TP1 +24V TP2 +14V
TP3 +5V TP4 +3.3V
TP5 2.5V TP6 -14V
TP7 -2.5V TP8 +12V
TP9 +2.048V TP10 4.096V
TP11 +5V TP12 +2.5V
TP13 NOT USED TP14 -2.048
TP15 Ion-1 TP16 Ion-2
TP17 Ion-3 TP18 Ion-4
TP19 Ion-5 (NA) TP20 Ion-6 (NA)
TP21 MFG Only TP22 MFG Only
TP23 Sample Sensor TP24 +5V
TP25 Temperature TP26 +14V
TP27 GND TP28 GND
TP29 MFG Only TP30 MFG Only

1.5.4. Microcontroller
The STM32F407 microcontroller, represented as U12, can be located on the CPU board
(slight above & on right of the buzzer). This processor is preloaded with customized software
to control the peripherals – valve, pump, printer, RFID, signal processing, temperature
sensor, sample sensor and buzzer.

1.5.5. EMF and Noise Shielding

SMPS technology used to generate 24V DC supply from 110-220V AC supply. CPU board
has voltage regulator and switches to ±14V, ±2.048, ±5, ±2.5 and 3.3V. These linear
regulators and switches generate EMF noise which may interfere with sample analysis
resulting in inaccurate readings. For high accuracy and precision, the signal processing
amplifier on customized CPU is shield under using conductive metal shield plate. This shield
must be installed and covered for optimal performance.

1.5.6. Fluid Pack Sensor

®
SmartLyte Plus uses standard fluids from pack for calibration, sample analysis, and waste
storage. To ensure that the fluid pack is present, an optical reflective sensor is mounted on
the CPU. The photo-detector signal is used to determine presence/absence of fluid pack.

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 1 Introduction

1.5.7. Valve Drivers

®
SmartLyte Plus has 5 solenoid valves for fluid flow control. These solenoids valves (A, B, C,
V, & R) are controlled from power transistors Q1 to Q5. To open a solenoid, a pulse of
voltage 22-24V is applied for 0.5 seconds. Then the voltage drops to 12.5V to hold the
solenoid open. This feature is applied to conserve energy and prevent overheating the
valves.

1.5.8. Pump Motor Driver

®
SmartLyte Plus has 1 stepper motor for fluid flow. The pump driver circuit provides the
current and controlling steps for the peristaltic pump. Pump roller with installed tubing
ensures fluid flows in one direction from pack to waste pump.

1.5.9. Input Amplifiers

IC U24 – U26 Provide high to low input impendence matching for each electrode (Na, K, Cl,
Ca, & Li) input. These amplifiers provide a gain of 10 for all incoming signals.

1.5.10. Temperature Sensor circuit

This circuit creates a temperature depended voltage which is converted by software to

®
degree C. In SmartLyte Plus there is no manual adjustment needed.

1.5.11. Analog Channel and A/D Converter

The analog inputs from the amplifiers are connected to IC U23. This IC converts analog
signal to digital readings that is then used by software for instrument operation.

1.5.12. CPU board Connector

In order to fulfill all responsibilities of the CPU board and the program installed on it, is
equipped with a number of connectors to interface it with all peripherals. The description of
the JP connectors is as below:

JP1 – Power connector

JP2 – Serial DB9 RS232 connector
JP3 – Valve board connector
JP4 – Programmer (MFG Only)
JP5 – RFID connector
JP6 – Printer connector
CN3 – Display flex cable connector
CN2 – MFG Only

1.5.13. Valve Board

The valve board contains the LED array used to illuminate the measuring chamber and the
interconnectors used for all solenoids, the peristaltic pump and the door sensor. A ribbon
cable from the CPU Board supplies the electrical connection for each signal through
connector JP5.
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 1 Introduction

1.5.14. Display Board

The display board is comprised of 2 stacked boards. The 1st board has the 5” touch screen
display mounted on it. This display is then connected to display adaptor board that gets
power from CPU board and HDMI signals from interface PC. Touch signals are sent back to
the interface PC via flex ribbon cable.

Additionally, the display adaptor board has one RJ11female connector mounted on it. Sample
sensor male RJ11 connector from electrode tray plugs to RJ11 female connector.

1.5.15. Printer

The printer is a graphics printer with 192 dots of a TP series.

1.5.16. Shielding and Grounding

Beside the shield for eliminating the internal noise from the power supply, the entire
®
SmartLyte Plus is equipped with a protective shield to prevent the influence of magnetic
fields, and other noise sources in the laboratory. The internal protective shield creates a
“Faraday Cage” that protects instrument measurements from outside noise. This shield is
also grounded with a grounding wire in the power receptacle in the power switch input.

1.5.17. Interface PC
®
SmartLyte Plus has an interface PC which has pre-installed Linux OS installed on it. This Interface-
PC is responsible for following peripherals/features:

• Graphic User Interface

• Display
• Touch Screen
• LAN/Wi-Fi connection
• Network LIS
• Auto updates
• Data storage
• USB (x4)

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 2 Scheduled Maintenance

2. Scheduled Maintenance
®
Maintenance procedures for the SmartLyte Plus Electrolyte Analyzer require minimal time by the
operator to perform. The procedures outlined below should be performed according to the schedule
indicated. Detailed instructions for these procedures can be found in the Operator's Manual describing the
correct method to perform routine analyzer maintenance.

2.1. Daily

- Perform cleaning cycle at end of the day.

- Perform conditioning cycle at end of the day.
- Check printer paper supply.

2.2. Weekly Maintenance

- Clean sample probe and fill port.

- Clean exterior analyzer surfaces.

2.3. Monthly Maintenance

-Clean reference electrode housing.

2.4. Six Month Maintenance

-Replace peristaltic pump tubing.

2.5. Annual Preventive Maintenance

- Replace main tubing harness.

- Replace fill port assembly.
- Replace sample probe.
- Replace sample sensor Quad-ring.

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 3 Troubleshooting

3. Troubleshooting
®
The SmartLyte Plus Electrolyte Analyzer is designed to provide long, trouble-free service. However, any
scientific measuring device may occasionally malfunction, requiring the operator to identify the cause of the
problem.

The messages in the table below provides the likely cause and recommends steps that should help you return
®
your SmartLyte Plus Electrolyte Analyzer to operation.
®
If the SmartLyte Plus Electrolyte Analyzer does not perform correctly after conducting the basic steps outlined in
this chapter, you should contact Technical Service at Diamond Diagnostics Inc. Support staff can assist you over
phone or email. Online-Remote Support feature under Network > Remote Support menu is also available for
remote support/training.

3.1. Error Messages and Troubleshooting

Message Cause Action

Air in STD-A The analyzer draws a sample of STD • Check the Fluid remaining in the Fluid Pack. If
A. The leading edge of the solution is less than 5% remains, replace the Fluid Pack.
detected by the sample sensor which • Check for clots or crystals that may have
must also detect a continuous stream formed in the Standard A tubing or the
of STD A Solution without electrode chamber
encountering air bubbles. If the
• Ensure the sample sensor is securely plugged
sample sensor detects air bubbles or
in; Perform the sample sensor test to verify
is unable to detect the presence of
sensor is operating correctly.
Standard A solution in the
programmed time period, the error • Ensure that all O-rings are in place.
message is displayed. • Check solenoid V for proper sealing of the vent
line.
• Prime Standard A to verify fluid pack has
Standard A and peri-pump is functioning
correctly.
• Replace the peristaltic pump tube set to ensure
correct aspiration of Standard A.
Air in STD-B This message is displayed if • Check Standard B tubing for crystallization or leaks.
Standard A is aspirated properly, and • PRIME STD - B.
Standard B is not detected. • Replace the Fluid Pack.
Air in STD-C (Li Detection of Standard C aspiration is • Check Standard C tubing for crystallization or leaks.
activated) the same as for Standard B. • PRIME STD – C.
• Replace the Fluid Pack.
Change Fluid When the monitored Fluid level in the • Replace the Fluid Pack (see chapter
Pack Fluid Pack reaches less than zero % 5.7.2:”Checking reagent Fluid level and
remaining, the analyzer will display changing the Fluid Pack).
[Change Fluid Pack].
**Check Temp** This message is printed at the end of • Check for proper sample preparation (see
++
(Ca activated) the sample report and displayed while chapter 3).
the measurement is in process in • Ensure the sample sensor cable is securely
case the temperature of the sample is plugged in.
outside the range (Range 10°C-
• Make sure room temperature is within specified
40°C).
limits (15°C-32°C / 60°F- 90°F).
• Perform the Amplifier Test to measure the
actual temperature.
• With the front door opened, the temperature
displayed should be approx. 5°C above the
actual room temperature.

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 3 Troubleshooting
Message Cause Action
Check Sample The sample sensor is calibrated • Initiate Check Sample Sensor to verify air
Sensor automatically with air during each reading.
calibration. For proper functioning, • Open the sample door and press LOAD
the sensor must provide a reading of SAMPLE button to aspirate various Fluids
95 to 105 units for air. through the sensor. For transparent Fluids, the
reading should increase by at least 40 units. For
blood samples (not transparent), the reading
should decrease by at least 40 units. The pump
can be stopped by pressing STOP.
• Check for correct drying of the measuring
chamber during the wash cycle at completion of
test. If not drying, replace the peristaltic pump
tube set.
• If response is not as expected, clean sample
sensor by performing Daily Maintenance. If
response is still not as expected, replace
Sample Sensor (AV-BP5036D).
• Perform a calibration to remove the error
message.
Check Reference The reference electrode is • Look for ref segments coming out
Electrode pressurized during STD-A aspiration • Check for leaks around connectors, tubing and
while the R valve is closed. When the electrode.
pressure is relieved, the sample
• Ensure that the reference tubing is securely
sensor will detect a back flow of STD-
connected to the receptacle.
A. If the sample sensor does not
detect a backflow of STD-A, this error • Check that reference electrode is firmly installed
obtained. in the housing.
• Check for the presence of o-rings and for proper
When the analyzer fails to detect a sealing of the electrodes
flow of Reference Solution into the • Under DIAGNOSTICS/CHECK ELECTRODES,
measuring chamber, this message initiate a reference check. Visually check and
will be displayed. This test is confirm reference fluid has back flow in this test.
performed at the beginning of each • Examine for proper filling of the reference
calibration cycle. housing.
• Since this test utilizes Standard A, make sure
that it is aspirated properly into the measuring
chamber. If not, replace the Fluid Pack.
• If the test fails, clean the reference housing.
(See chapter 5.4: "Monthly maintenance" in
Operators Manual.)
Clog Pathway If the unit is unable to clear the • Make sure that the electrode O- rings are
sample path or to aspirate any of the present and the seated properly.
3 Standards at the beginning of a • Make sure electrodes are installed correctly in
calibration. electrode tray.
the cause:
• Check for clog or crystallization in the Fluid
defective reference housing
path: especially in the sample probe, the tubing
(increased discharge of KCL)
to the sample sensor and in the sample sensor.
leaks in Fluid path
defective pump tubing • Ensure that the sample sensor is securely
defective sample sensor plugged in and perform a sample sensor test to
pathway obstruction ensure the sensor is operating correctly. If
necessary, clean the sample sensor.
• Replace the reference electrode housing.

ECO 9099 SOP05-5090F Rev.00 Effective Date: 12/20/18 Page 53 of 58

 3 Troubleshooting
Message Cause Action
Close Door If sample door is not closed within 20 • Close door and restart original procedure
seconds after measurement • Check if sample dis not completely closed.
requested or sample door is opened
• This could be caused by probe improperly seated
and no sample is detected in 20
in in fill port
seconds
Door is Closed If door is opened and then closed • Restart original procedure
without completing the intended
procedure
Empty Pack Pack used to its maximum capacity. • Insert new pack

ERR When displayed in place of sample • Ensure the electrode securely plugged in place.
results, the analyzer is unable to • Check for proper filling of the reference
obtain valid voltage reading from the electrode.
electrode.
• Ensure sufficient sample size and proper filling
of measurement chamber by running a sample
and examining flow when backlight is on.
Expired Fluid Inserted Fluid Pack has passed • Insert new pack
Pack expiry date..
Inspect electrodes Stable reading of Standard A could • Ensure that electrodes are properly plugged in
not be obtained within 6 aspirations and aligned correctly.
for all electrodes. • Check the locking mechanism on electrode tray
to ensure properly engaged.
• Check Electrodes with STD-A. The mV should
fall between -100 and 100. The stability is
expressed as SD in parenthesis. Expected
value is 0 to 10. If stability of electrodes is out of
range, replace the reference electrode.
• Perform daily maintenance.
• If necessary, clean the reference electrode
housing or replace the reference electrode.
• Replace the Fluid Pack.
• Check shielding connection to ground for short.
Interface error Only displayed during ACTIVE • Check if pins 2 and 3 of the serial port were
INTERFACE. The interface test (see connected properly.
chapter 8:”Testing the interface”) was • Check the serial cable.
not successful.
• If the error persists, contact Technical Support.

ECO 9099 SOP05-5090F Rev.00 Effective Date: 12/20/18 Page 54 of 58

 3 Troubleshooting
Message Cause Action
Invalid Na Cal Message displayed when specific • Recall last calibration result on analyzer. MAIN
Invalid K Cal electrode does not calibrate OPERATIONS MENU>>>RESULTS>>> LAST
Invalid Cl Cal successfully due to low Calibration CALIBRATIONS
Values, mV out of range. • Verify electrode is plugged in properly
Invalid Ca Cal
For Li, if Na A-C is out of range, Li
Invalid Li Cal • Check electrode tray slide mechanism correctly
will not have a valid calibration
engaged and electrodes interface is secure.
• Verify electrode mV response
• Perform Daily Maintenance
• For Li, if Na A-C is out of range, Condition the
instrument. MAIN OPERATIONS MENU>>>
DIAGNOSTICS>>> CONDITION
• Check or replace CPU
Invalid Calibration Displayed when a calibration has • Perform Calibration
been interrupted by pressing NO, • Run Check electrodes to diagnose if problem is
Opening sample door or none of the stability of the readings (SD) or mV values
electrodes calibrated within -100 to 100.
®
Invalid Fluid Pack Fluid Pack is not authentic. • Ensure Fluid Pack is for SmartLyte Plus.
• Go to [PACK STATUS] in Main Operations
Menu and verify pack information.
• Ensure pack is properly inserted.
• Ensure RFID tag is detected. Under
[DIAGNOSTICS], press [CHECK RFID]
• Contact Customer Support
**Li Calculation Lithium result can only be calculated • Ensure Na value is between 89.6 – 169.5
out of range for Na+ range: 89.6 – 169.5 mmol/L. mmol/L range
If Na+ value is outside this range, this • Recalibrate and try running sample again
message will be displayed & printed
• Contact Customer Support
instead of Li+ value.
No Action is requested, but the analyzer • Check and verify door closed and fluid pack
Acknowledgement does not respond to the request. inserted correctly.
• Wait for instrument to stop performing any
functions. Proceed to previous screen and try
again.
®
• Press SmartLyte Plus on top left corner of the
screen to reset.
• If resetting does not clear the error, reboot the
analyzer, MAIN OPERATIONS
MENU>>>INSTRUMENT
SETTINGS>>>SYSTEM>>>REBOOT

ECO 9099 SOP05-5090F Rev.00 Effective Date: 12/20/18 Page 55 of 58

 3 Troubleshooting
Message Cause Action
System Busy Instrument is performing an active • Wait for a few minutes for active task to finish
task and cannot start another task in and try again
parallel. • If still not cleared, reboot the analyzer, MAIN
OPERATIONS MENU>>>INSTRUMENT
SETTINGS>>>SYSTEM>>>REBOOT
Valve Over Temp The solenoids overheated or are • Turn power off for 1 hour to cool.
improperly connected. The solenoid • Check room temperature within specified limits of
valve have thermal fuses that reset. 15oC to 32oC
• Ensure all pinch valves properly connected.
↑↑↑↑ ↓↓↓↓ If the analyzer displays multiple • For urine sample, arrows up instead of the K+-
arrows up or down instead of the result indicate that further dilution is necessary
sample results, the concentration of (see chapter 3.3.4: “Urine samples”).
the sample is outside of the • Check for Proper sample preparation (see
measurement range chapter 3).
• Check for small air bubbles in the sample after
aspiration into the sample chamber.
• Check for proper aspiration of standard A.
↑ ↓ Indicates if measured value is above • Temperature sensor is in the sample sensor. Verify
or below expected values for sample sensor plugged in securely
temperature, cal values, or sample • Check room temperature within specified limits of
values 15oC to 32oC.
• Check temperature test MAIN OPERATIONS
MENU>>>DIAGNOSTICS>>>CHECK
TEMPERATURE
• If temperature is not within 1 to 2 degrees of room
temperature, replace sample sensor.
• If new sample sensor does not fix the error, replace
CPU
Communication Bad connection between display, • Check the flex ribbon connectors between
Error CPU and interface PC Display, CPU and interface PC.
• Restart the unit and ensure pump turns on at
power cycle.
• Contact support if problem persists
Drift Error Old electrode that are drifting. • Check the STD-A mV for sample and calibration
Sample STD-A readings where not • Re-calibrate the instrument
close to STD-A reading during
• Change the electrode
calibration
Flash Drive Error Flash memory storage malfunctioned • Contact support to get CPU replacement
Missing Data Data loss during communication • Check the flex ribbon connectors between
Or Invalid Data between interface PC and CPU Display, CPU and interface PC.
board. • Restart the unit and ensure pump turns on at
power cycle.
• Contact support if problem persists
No Data Found No data in memory to • Check if data is saved properly after each
Or No Error display/print/analyze sample analysis
• Check input range and date range
• Try to search data remotely using remote
access feature
No Pack Installed Fluid pack is missing or not installed • Ensure pack is installed and inserted all the way
properly in connecting to manifold
• Check fluid pack sensor under diagnostic menu
Not Calibrated Instrument was not calibrated before • Calibrate the instrument
running sample • Ensure current electrode configuration is marked
green on home screen

ECO 9099 SOP05-5090F Rev.00 Effective Date: 12/20/18 Page 56 of 58

 3 Troubleshooting
RFID Missing RFID tag was not found in the • Ensure you are using an authorized valid pack
installed pack supplied by the manufacturer
• Check RFID under diagnostics
• Ensure RFID PCB is present and securely
connected
Too High Value outside reportable range • Run control sample to ensure instrument is
Too Low reporting values in reportable range
• Try running sample again
Valve Error Valve overheated • Power off the instrument for about 10 minutes
and try again
• Check valve connectors are securely connected
to valve board
Air in Sample Air was detected during sample • Please load sample when prompted to. Pre-
aspiration loading sample may cause this issue
• Check sample volume
• Check fluid is flowing and there are no clogs
specially if whole blood samples were analyzed
• Check sample sensor under diagnostic menu
Air in STD-AB Air was detected during STD-B and • Execute Prime All after installing new pack
STD-C aspiration • Ensure pack installed properly
• Check pack volume
• Check tubing for fluid flow
Air in STD-AC Air was detected during STD-A and • Execute Prime All after installing new pack
STD-C aspiration • Ensure pack installed properly
• Check pack volume
• Check tubing for fluid flow

ECO 9099 SOP05-5090F Rev.00 Effective Date: 12/20/18 Page 57 of 58

 4 Parts List

4. Parts List
4.1. Consumables

Replacement Part # Description Warranty

+
AV-BP0413D ELECTRODE, Na 12 months
+
AV-BP0359D ELECTRODE, K 6 months
-
AV-BP0570D ELECTRODE, Cl 6 months
++
AV-BP0360D ELECTRODE, Ca 6 months
+
AV-BP0962D ELECTRODE, Li 3 months
AV-BP5026D ELECTRODE, REFERENCE 12 months
AV-BP5027D PERISTALTIC PUMP TUBING 3 months
AV-BP5193D PINCH VALVE TUBING KIT 6 months
AV-BP5186D FLUID PACK Use before expiration date
AV-BP0380D NA ELECTRODE CONDITIONER SOLUTION Use before expiration date
AV-BP1025D CLEANING SOLUTION Use before expiration date
AV-BP0521D DEPROTEINIZER SOLUTION Use before expiration date
AV-BP0344D URINE DILUENT Use before expiration date
AV-BP5025D THERMAL PRINTER PAPER Replace as necessary
AV-BP5019D REFERENCE ELECTRODE HOUSING Replace as necessary
AV-BP5006D SAMPLE PROBE Replace as necessary

4.2. Analyzer Parts for Repair

Replacement Part # Description

CN-A4010 ASPIRATION ASSEMBLY
CN-A4060 PRINTER GRAPHIC ASSEMBLY,
®
CN-4022 BASE, ISE ELECTRODE TRAY, SmartLyte Plus
®
CN-A4405 BOARD, CPU, SmartLyte Plus
®
CN-A4406 BOARD, DISPLAY, SmartLyte Plus
CN-A4054 BOARD, RFID
CN-A4018 BOARD, VPB
®
CN-4431 CPU INTERFACE, SmartLyte Plus
CN-4155 CRIMP PIN
®
CN-A4411 ELECTRODE TRAY, SUBASSEMBLY, SmartLyte Plus
AV-BP9043D FILLPORT ASSEMBLY /9100
CN-4018 INDICATOR CAP
AV-BP5014D KIT, SHUTDOWN
AV-BP5194D KIT, STARTUP
AV-BP5027D PERISTALTIC PUMP TUBING
AV-BP5193D PINCH VALVE TUBING KIT
CN-A4012 PUMP MOTOR, PERISTALTIC, SUBASSEMBLY
CN-A4014 ROTOR, PERISTALTIC PUMP, SUBASSEMBLY
AV-BP5036D SAMPLE SENSOR
CN-A4415 SD CARD, SMARTLYTE PLUS
®
CN-A4409 SUBASSEMBLY, POWER SUPPLY, SmartLyte Plus
CN-4070 TRAY, PRINTER PAPER
CN-A4015 VALVE, SOLENOID, SUBASSEMBLY

ECO 9099 SOP05-5090F Rev.00 Effective Date: 12/20/18 Page 58 of 58