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VITAL SCIENTIFIC Vitalab Micro Service Manual

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VITALAB MICRO & MICROLAB 200
VITAL SCIENTIFIC
SERVICE MANUAL
VITAL SCIENTIFIC
SERVICE MANUAL

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Summary of Contents for VITAL SCIENTIFIC Vitalab Micro

  • Page 1 VITALAB MICRO & MICROLAB 200 VITAL SCIENTIFIC SERVICE MANUAL VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 2 VITALAB MICRO & MICROLAB 200 : 3086-333 Copyright : 1995 Release : January 31 1995 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 3 VITALAB MICRO & MICROLAB 200 VITAL SCIENTIFIC SERVICE MANUAL...

  • Page 5: Table Of Contents

    VITALAB MICRO & MICROLAB 200 CONTENTS. CONTENTS............. i PREFACE............. iv ABOUT THE MANUAL. INTRODUCTION. SCOPE AND ORGANIZATION. REPAIR POLICY WARRANTY SPARE PARTS TECHNICAL ASSISTANCE SERVICE TRAINING FIELD SERVICE INFORMATION 1 GENERAL DESCRIPTION........1.1 1.1 INTRODUCTION. 1.2 PHYSICAL DESCRIPTION. 1.2.1 Introduction.
  • Page 6 VITALAB MICRO & MICROLAB 200 2.3 OPTO BOARD. 2.13 2.4 OPTICAL BLOCK. 2.13 2.5 SWITCHED POWER SUPPLY. 2.14 2.5.1 input/output connections. 2.14 2.6 DISPLAY. 2.14 2.7 KEYBOARD and KEYBOARD INTERFACE. 2.15 2.7.1 Principle of scanning. 2.15 2.8 PRINTER. 2.17 3 INSTALLATION AND MAINTENANCE......3.1 3.1 INSTALLATION AND INITIAL CHECKOUT.
  • Page 7 VITALAB MICRO & MICROLAB 200 4 TROUBLESHOOTING.......... 4.1 4.1 No sample aspiration. 4.2 Insufficient sample aspiration. 4.3 Temperature error message. 4.4 Sample/water under instrument. 4.5 ERROR instead of result. 4.6 Inconsistent measurement results. 4.6.1 Drop outs. 4.6.2 Bad reproducibility. 4.6.3 Results too low.
  • Page 8 VITALAB MICRO & MICROLAB 200 VITAL SCIENTIFIC SERVICE MANUAL...

  • Page 9: Preface

    VITALAB MICRO & MICROLAB 200 PREFACE PREFACE. ABOUT THE MANUAL. This manual provides a detailed description, as well as pre- ventive- and corrective maintenance instructions for the Vita- lab Micro and the MICROLAB-200 Analyzer. INTRODUCTION. The instrument is a universal Photometric Analyzer. The...

  • Page 10: Scope And Organization

    VITALAB MICRO & MICROLAB 200 PREFACE SCOPE AND ORGANIZATION. This "Service manual" is part of a two volume set. The other volume "User manual" is supplied with each instrument. Title User manual VITALAB MICRO English, German 3086-147 English 3086-142 German...
  • Page 11 VITALAB MICRO & MICROLAB 200 PREFACE Chapter 5, "Exploded views and Schematics", contains illustrated mechanical exploded views, PCB schematics and associated parts-lists for ordering of service parts. Chapter 6, "Service info's", gives the user of the manual the possibility to store information concerning modification, the so called Service info's.

  • Page 12: Repair Policy

    Repair Form with a clear description of the fault. This will be both for warranty claims as for normal repairs. Repair Forms will be supplied by Vital Scientific, free of charge. WARRANTY Refer to the section "General Conditions of Sale" in the Price list for the warranty policy.

  • Page 13: Technical Assistance

    Should you encounter a problem which requires technical assistance, you may call, fax or telex the Service Department of Vital Scientific. Please be prepared to give a clear and complete description of the problem. Also be prepared to give an answer to the following questions:...
  • Page 14 VITALAB MICRO & MICROLAB 200 PREFACE malfunctioning report should be filled-out each time when a service is performed on the instrument. The installation form as well as a number of malfunctioning forms are included in the packing of the instrument. We request you to return the filled-out forms to us on a regular base (for example once a month) by mail or fax, whatever is convenient.
  • Page 15 VITALAB MICRO & MICROLAB 200 PREFACE VITAL SCIENTIFIC SERVICE MANUAL...

  • Page 17: General Description

    VITALAB MICRO & MICROLAB 200 GENERAL DESCRIPTION 1 GENERAL DESCRIPTION. 1.1 INTRODUCTION. The instrument is a small stand-alone photometer for the normal routine tests in a laboratory. It is designed in such a way that operating and servicing takes a minimum of time. The light weight and compact design, the flexibility, easy of operation and reliability are the prime features.
  • Page 18 VITALAB MICRO & MICROLAB 200 GENERAL DESCRIPTION methods to be used. In figure 1.1. a functional diagram given of the complete instrument. Figure 1.1 Functional diagram. VITAL SCIENTIFIC SERVICE MANUAL...

  • Page 19: Mechanical Design

    VITALAB MICRO & MICROLAB 200 GENERAL DESCRIPTION 1.2.2 Mechanical design. The Analyzer consists of two major assemblies: - The baseplate assembly, containing: - Optical system - Fluid system - Power supply - Processor board - The poly-urethane cover assembly, containing:...
  • Page 20 VITALAB MICRO & MICROLAB 200 GENERAL DESCRIPTION The optical system has been kept as simple as possible. The filament of the lamp is projected in the lens in front of the flowcell, whilst the diaphragm is projected just after the flowcell, creating a parallel light beam in the flowcell.

  • Page 21: Fluid System Description

    VITALAB MICRO & MICROLAB 200 GENERAL DESCRIPTION 1.2.4 Fluid system description. Figure 1.3 shows a schematic of the fluid system, consisting of the flowcell, pinch valve and bellows pump. Figure 1.3 Fluid system VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 22 VITALAB MICRO & MICROLAB 200 GENERAL DESCRIPTION There are two major cycles: Aspirate cycle. When aspirating the bellows is moving downwards. The fluid is than aspirated trough the sipper tube, flowcell, pinch valve to the inlet of the pump. The pump will stop when the programmed volume is reached.

  • Page 23: Functional Description

    VITALAB MICRO & MICROLAB 200 GENERAL DESCRIPTION flowcell. Note: For a correct functioning of the system and to assure a 'bubble-free' filling of the flowcell, it is very important that the cleaning instructions in the Operating Manual are followed closely.

  • Page 24: Signal Processing

    VITALAB MICRO & MICROLAB 200 GENERAL DESCRIPTION (Counter Timer Control), SIO (Serial I/O), and a PIO integrated in only one device. The PIO is controlling the Keyboard, the SIO the RS232C serial interface, and the CTC is used for the A/D conversion of the measuring signal and timing control.
  • Page 25 VITALAB MICRO & MICROLAB 200 GENERAL DESCRIPTION According the law of 'Lambert Beer' the concentration/activity has a linear relation to the Absorbance. Therefore the linear output voltage must be logarithmically converted, in order to obtain the required Absorbance from which the significant concentration/activity can be calculated.

  • Page 26: Temperature Control

    VITALAB MICRO & MICROLAB 200 GENERAL DESCRIPTION The result of this calculation gives the Absorbance value in units of 0.1 mAbs. However the Absorbance thus obtained is a relative value and must be corrected with a so-called 'Absorbance offset' value in order to find the absolute Absorbance.

  • Page 27: Test / Diagnostic Routines

    VITALAB MICRO & MICROLAB 200 GENERAL DESCRIPTION the temperature is within range. Only when the temperature is within 0.1 degree Celsius of the nominal value, the temperature error message will be removed from the display. Besides the three standard temperature settings, there is also the possibility to switch the temperature control off (RT = Room Temperature).
  • Page 28 VITALAB MICRO & MICROLAB 200 GENERAL DESCRIPTION 1.12 VITAL SCIENTIFIC SERVICE MANUAL...

  • Page 29: Theory Of Operation

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION 2 THEORY OF OPERATION. 2.1 INTRODUCTION. This chapter explains the theory of operation of the Analyzer, and is intended to help the service engineer to understand the design of the instrument and thus facilitates the maintenance and repair.

  • Page 30: Microprocessor

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION 2.2.2 Memory. The program area for the Z80 CPU is contained in five EPROM's devices. A sticker on the EPROM's will indicate a identification number, followed by the software release number. Also the EPROM's are numbered from 0 to 4. The EPROM numbers must be inserted in the correct sockets on the processor board, see figure 2.1.

  • Page 31: Centronics Interface

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION parallel-to-serial converter/controller. The CTC is a four channel counter/timer and can be fully programmed by the Z80 CPU. Its main functions are; event counter, interrupt and interval timing, and general clock generator. The communications between the Z80 CPU is mainly based on interrupt control.

  • Page 32: Programmable Input Amplifier

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION full duplex operation, the Instrument program is not capable to handle incoming serial data. The serial settings can be programmed via the system parameters (data bits, stop bits, baud rate, etc.). There is also a possibility to choose between a printer and computer.
  • Page 33 VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION Referring to the electrical diagram of the processor board the gain setting is performed by four signals (outputs from the PIO IC34), which are derived from data bus lines D0 to D3. These signals directly control the FET switches contained in IC11 which is a TTL compatible quad FET switch.
  • Page 34 VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION Therefore, utilizing a method of 'successive approximation', commonly used in A/D-converters, the gain is set in such a way that it drives the output of the amplifier to fit within a specific window. This window determines the maximum and minimum negative Absorbance limits of the instrument.

  • Page 35: Vlin / Tlog Converter

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION ³0 º open º off offº 720,58³ ³0 º open º on offº1152,92³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÐÄÄÄÄÄÄÄÄÄÐÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÐÄÄÄÄÄÄÄÙ 'on' = Conducting 'off' = Non-conducting The truth table illustrates how the FET switches must be set to produce the required gain.
  • Page 36 VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION The reference voltage for the comparison measurement is also obtained from the 10 Volts precision reference source, and has a nominal value of 100 mVolts. During the time the logarithmic decreasing signal is higher...

  • Page 37: Lamp Stabilizer

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION no argument that the measuring value will be affected proportionally! Therefore, measuring values are compensated for variations in the log. conversion circuit by means of the measured reference signal, according to the following calculation: Nominal reference (20.000)

  • Page 38: Temperature Control

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION Figure 2.4 Lamp stabilizer. 2.2.10 Temperature control. The flowcell of the Analyzer is thermostatically controlled by means of two small Peltier elements. Because the principle of the Peltier effect is assumed to be more or less 'common...
  • Page 39 VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION - Peltier element driving circuit Figure 2.5 Block diagram temperature control. VITAL SCIENTIFIC SERVICE MANUAL 2.11...
  • Page 40 VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION Input amplifier. The input amplifier circuit is built up around IC6 which is an ultra-low offset, voltage OP-AMP, type OP07. This special type of OP-AMP requires no external components for offset kneeling of frequency compensation.
  • Page 41 VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION switching a resistor parallel to R20 and P2. Now the reference voltage (+/- 6V) is selected which corresponds to 30 C. This voltage can be adjusted by means of P3. If the 'T-SET1' signal is active, FET switch IC3B is closed, switching a resistor parallel to R20 and P2.
  • Page 42 VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION two FET switches (IC3C and IC3D) and control each one half of the bridge driver. Depending which output of the followers is positive, one half of the bridge driver is active. This means that the two outputs are controlling the current direction through the Peltier elements, and therefore select heating or cooling.

  • Page 43: System Component Drivers

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION source for all other reference voltages. Two additional circuits provide the 1 Volts supply (IC7) for the thermistor network and the 286.4 mV for the 15 C. reference (IC8). 2.2.11 System component drivers.

  • Page 44: Opto Board

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION The special stepper motor controller (L297) takes care of all timing and control signals which are needed to run the stepper motor. Two drivers are used to supply the necessary current. 2.3 OPTO BOARD.

  • Page 45: Switched Power Supply

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION Figure 2.7 The Flowcell unit 2.5 SWITCHED POWER SUPPLY. The switched power supply is mounted underneath the processor board on the base-plate. The AC line voltage is routed via a linefilter to the switched power supply.

  • Page 46: Display

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION is made by the two mounting screws. To prevent hazard always fixed properly after disassembling. 2.6 DISPLAY. The Liquid Crystal Display module consists of the LCD display and a control board. Both parts are considered as one module, and is mounted inside the top-cover.

  • Page 47: Keyboard And Keyboard Interface

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION ÚÄÄÄÄÄÄÄÄÒÄÄÄÄÄÄÄÒÄÄÄÄÄÒÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³Pin No. ºSymbol ºLevelº Function ³ ÆÍÍÍÍÍÍÍÍÎÍÍÍÍÍÍÍÎÍÍÍÍÍÎÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͵ ³ º º º Frame ground ³ ³ º Vss º º Power supply (0V, GND) ³ ³ º Vcc º º Power supply for logic ³...
  • Page 48 VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION computer knows that a key is depressed. Through the combination of MUX-channel, position of walking "0" and "0" MUX-output the computer knows the signification of the depressed key. 2.20 VITAL SCIENTIFIC SERVICE MANUAL...

  • Page 49: Printer

    VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION 2.8 PRINTER. The optional printer for the instrument, is a long life thermal DOT matrix printer, model Seiko DPU-411 type II. The printer can be installed by placing it on top of the cover.
  • Page 50 VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION characters. Note that when using other printer paper then the originally, it could decrease the life-time of the printer head. CONTROLS AND INDICATORS. Power switch on/off: When switched to on, power is supplied to the printer and the power LED and offline LED lights.
  • Page 51 VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION zigzag pattern (alternate dots) for 10 lines. Self test printing ends automatically after printed the test pattern. Figure 1.8 Test printout VITAL SCIENTIFIC SERVICE MANUAL 2.23...
  • Page 52 VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION Dipswitch I settings. SWITCH FUNCTION Input method PARALLEL Serial CR function CR and LF Print mode NORMAL 40 Condensed 80 columns columns Character set ORDINARY Special Zero font 0 + / SW6..SW7...
  • Page 53 VITALAB MICRO & MICROLAB 200 THEORY OF OPERATION 300 bps 600 bps 1200 bps 2400 bps 4800 bps 9600 bps Default settings. SWITCH 1 2 3 4 5 6 7 8 1 2 3 4 5 6 x x x x x x x x x x x x...

  • Page 55: Installation And Maintenance

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE 3 INSTALLATION AND MAINTENANCE. 3.1 INSTALLATION AND INITIAL CHECKOUT. This section contains information for uncrating the Instrument and the procedures for assembly, installation and initial checkout of the instrument. Important remarks for installation: Ø...
  • Page 56 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE The line voltage range is from 110VAC to 240VAC as indicated on the identification plate at the back of the instrument. The power cord type supplied with the instrument is for plugging into a non-polarized 220V outlet. For other power sockets, the power plug must be removed and the correct plug installed.
  • Page 57 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE ANALYZER REAR VIEW ! Note: Only equipment which comply with the relevant safety standard shall be connected. Cover Waste connection Fuse holder Mains entry Power switch Mains cable Power supply printer cable p/n 6001-324...

  • Page 58: Serial Interface

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE Printer Centronics interface cable p/n 3374-058 Printer p/n 6001-318 (6001-685/110V & 6001-686/220V must be connected directly to line power via a transformer) Remote control 3.2 SERIAL INTERFACE. 3.2.1 Introduction. This section contains information on how to proceed if the Analyzer has to be connected to external data-handling equipment.

  • Page 59: Serial Format And Baudrate Settings

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE - Serial interface format and Baudrate - Interface cable connections - Software requirements 3.2.2 Serial Format and Baudrate settings. The serial Interface settings are programmable. In order to program the required settings, select 'PROGRAM MODE','SYSTEM PARAMETERS','RS232 INTERFACE'.

  • Page 60: Software Requirements

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE The figure below shows three possible serial interface connections between the Analyzer and an external device. In general the maximum length of an RS232 interface cable between DTE and DCE is specified as 15 mtr. or 50 feet.
  • Page 61 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE format_type R: Result sample_type R: Reagent blank S: Standard C: Control N: Normal name space Calibration name Control name Patient name number space space space Patient number sequence_number Calibration number (1..10) Sequence number...

  • Page 62: Character Set

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE Result error_flags : Absorbance outside high or low Absorbance levels NL=xx.x% : non linearity > 10%, after NL= percentage is given L or H : result is below (L) or above (H) a reference limit >...

  • Page 63: Preventive Maintenance

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE advantage that the host-computer is not obliged to monitor the serial output continuously for the availability of data but can do other things in the mean time. Note that this will only work if hardware handshaking is used.

  • Page 64: Special Service Tools

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE O-ring pump 3029-039 Approximated time necessary for service action: 1 hour (excl. customer acceptance tests). 3.4 SPECIAL SERVICE TOOLS. 2 Absorbance test-box. The only special tool which the field service engineer should have is the 2 Abs.

  • Page 65: Maintenance Procedures

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE 3.5 MAINTENANCE PROCEDURES. The following procedures describe how to disassemble the most important parts. 3.5.1 Cover cleaning. The top cover can be cleaned with wet tissues, or even better with an foam cleaner. Do not use abrasive material or alcohol.

  • Page 66: Fluid System Cleaning

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE Remove all dust from the instrument by using a dry compressed air or a vacuum cleaner with a soft brush. WARNING! Take care that no dust can enter the optics. Remove the processor board to clean the main switched power supply.

  • Page 67: Mounting Of The Ifl Filters

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE Disconnect the photocell cable and connect the 2 Abs. test box to PL6 the processor board. Connect the voltage cable of the test box to TP12 (-15V). Turn power on and allow 15 minutes 'warm-up'.

  • Page 68: Flowcell Removal

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE Figure 3.3 Filterwheel removal Slide the arm C in front of the optical block, upwards and to the left, see figure 3.3. The filterwheel can be taken out now. Lift careful the middle plastic ring together with the O-ring.

  • Page 69: Flowcell Assembly / Disassembly

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE (slide the plastic ring over the pipe afterwards, to ensure air tight connection). The silicon tube is slided over the upper flowcell pipe. See also the fluid diagram inside the instrument. Warning.

  • Page 70: Lamp Replacement

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE The flowcell unit and the Peltier elements are mounted in the flowcell block by means of a small pressure block which is tightened by means of an Allan screw. There are no mechanical adjustments required after assembly.

  • Page 71: Lamp Adjustment

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE The lamp holder can be removed now by pulling it upwards. Pull out the lamp (it can be HOT!) and replace it by a new one. Note: Never touch the lamp with the bare fingers, as this contaminates the bulb.

  • Page 72: Tube Replacement

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE screws situated along the edge of the unit. Remove the pump cover by loosening the four screws little by little to prevent breakage of the cover (the bellows can work like a spring). Dry out the contents of the bellows, be aware that the contents can be contaminated.

  • Page 73: Test And Diagnostic Procedures

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE - rearpannel, 2 fuses 250VAC High Breaking Capacity 2.5A Time Lag according IEC 127, package 5 x 20mm - powerunit, 1 fuse (internal) 250VAC 2A Medium Time Lag UL listed, package 5 x 20mm...
  • Page 74 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE During the RAM test, first all zeros will be written to the memory (clear memory). Afterwards all memory addresses will be filled with ones in such a way that '1' bits are shifted in the memory one at the time until the whole memory is filled with 'ones'.

  • Page 75: Internal Diagnostics

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE The counter registers are cleared and the interrupt frequency is set. 6 SIO initialization. The two serial interface's are initialized, according to the fixed settings or to the settings in the system parameters.

  • Page 76: Service Menu's

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE During measurements the instrument performs a check on the reference voltage (refer to description of Vlin/Tlog converter) and when this check fails the message 'REF' is displayed instead of the measurement value. The 'REF' message is generated if the reference source, which has a nominal value of 2.000 mAbs, becomes less than 1.900 mAbs.
  • Page 77 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE VITAL SCIENTIFIC SERVICE MANUAL 3.23...
  • Page 78 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE ABS ON SCREEN In the Abs on screen menu photometric measurements can be done with the following parameters: - wavelength - temperature The sippervolume is fixed on 1000µl. ADJUST LAMP In the adjust lamp menu the user is guided through the lamp adjustment.
  • Page 79 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE turn to this position and on the display it will show the current volume. <4> VALVE By pressing <4> the valve will switch between 'WASTE' and 'FLOW' see liquid diagram. In the 'WASTE' position the valve is energized.

  • Page 80: Energy Test

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE <2> FILTER By means of pressing <2> one of the eight desired filter positions can be selected. The filterwheel will turn to this position and on the display it will show the current position.

  • Page 81: Processor Board/ Powerboard Adjustment

    VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE Note 1: The Absorbance reading is affected by the transmittance of the 340nm IFL filter, and can cause different values between different instruments. Note 2: A dirty flowcell or air bubbles inside the flowcell might cause high or instable Absorbance readings as well.
  • Page 82 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE Measure TP6 with respect to TP4 for +12.6 V (+/- 0.5V) Measure TP24 with respect to TP4 for -20 V (+/- 2V) Measure TP11 with respect to TP10 for +15 V (+/- 0.6V) Measure TP12 with respect to TP10 for -15 V (+/- 0.6V)
  • Page 83 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE 2.11 Disconnect the 2 Abs. testbox and connect the photocell cable to PL6 3 Amplifier gain test. Select a 340nm filter. Select gain factor 1. The DELTA Abs value must be between -0.174 and -0.229 Select gain factor 2.
  • Page 84 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE Measure TP9 with respect to TP10 and adjust P2 for 408.9 mV (+/- 0.2mV). Wait for the voltage to stabilize! Select 30 C. Measure TP9 with respect to TP10 and adjust P3 for 368.6 mV (+/- 0.2mV).
  • Page 85 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE 4 TROUBLESHOOTING. The system troubleshooting information in this section, provides a means of isolating faults, possible causes and remedies. Note that the information in this section doesn't provide an overall step-by-step troubleshooting guide, but merely is...
  • Page 86 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE schematic troubleshooting guide by means of which every possible error can be solved. Therefore the failures described might well result from other causes than indicated. 4.1 No sample aspiration. Symptom A: System does not aspirate sample in any mode (also in flush), but prime LED indicates normal operation and pump seems to operate normally.
  • Page 87 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE Symptom A: Insufficient sample aspiration in any mode. Can also be caused by an obstruction. Cause 1: Leakage of fluid system. Action: Check the sipper tube for correct tightening. Do not over tighten, as excessive force may either destroy the seal or strip the threads on the fitting.
  • Page 88 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE 4.4 Sample/water under instrument. Symptom A: Sample or water appears under instrument and measurement results are in-correct. Cause 1: Safety valve on pump has opened due to clogging (blockage) of the fluid system.
  • Page 89 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE 4.6 Inconsistent measurement results. Inconsistent measurement results can be defined as follows: drop-outs, bad reproducibility, and too low measurement results. 4.6.1 Drop outs. Symptom A: Occasional drop-outs in the measurement. Either too high or too low.
  • Page 90 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE Cause 1: Measurement time too short. Action: Increase the measuring time. Cause 2: Air-bubbles in the flowcell. Action: See drop-outs. Cause 3: Instability of reagent (pollution). Action: Repeat test with fresh reagents.
  • Page 91 TTL or CMOS devices, commonly available in every well equipped workshop or at VITAL SCIENTIFIC. Do not use any components with lower specifications then the original item, since this can affect the performance of the instrument.
  • Page 92 VITALAB MICRO & MICROLAB 200 INSTALLATION & MAINTENANCE board! VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 93 5 EXPLODED VIEWS & DIAGRAMS EXPLODED VIEWS Cover 6001-712 Baseplate 6001-713 Optical block 6001-392 Pumpunit 6001-314 Flowcell 6000-977 ELECTRICAL DIAGRAMS Processorboard 6001-616 5.10 Keyboard connection board 6001-721 5.23 Wiring diagram VITALAB MICRO 6001-710 5.27 Wiring diagram MICROLAB-200 6001-950 5.29 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 94 LED (red) + wires + faston 3390-009 Peltier element 3750-007 Spring 3750-045 Spring 3750-055 Spring, lampholder 3820-278 Textplate rearplate 4002-125 Screw 4009-010 Screw 4100-343 Driving nut 4100-344 4100-347 Bellows, Teflon (for pump) 4100-349 Ring 4100-375 Bush VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 95 MICRO & MICROLAB-200 EXPLODED VIEWS exploded cover VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 96 LED (red) + wires + faston 3390-009 Peltier element 3750-007 Spring 3750-045 Spring 3750-055 Spring, lampholder 3820-278 Textplate rearplate 4002-125 Screw 4009-010 Screw 4100-343 Driving nut 4100-344 4100-347 Bellows, Teflon (for pump) 4100-349 Ring 4100-375 Bush VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 97 MICRO & MICROLAB-200 EXPLODED VIEWS exploded baseplate VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 98 LED (red) + wires + faston 3390-009 Peltier element 3750-007 Spring 3750-045 Spring 3750-055 Spring, lampholder 3820-278 Textplate rearplate 4002-125 Screw 4009-010 Screw 4100-343 Driving nut 4100-344 4100-347 Bellows, Teflon (for pump) 4100-349 Ring 4100-375 Bush VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 99 MICRO & MICROLAB-200 EXPLODED VIEWS exploded optical block VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 100 LED (red) + wires + faston 3390-009 Peltier element 3750-007 Spring 3750-045 Spring 3750-055 Spring, lampholder 3820-278 Textplate rearplate 4002-125 Screw 4009-010 Screw 4100-343 Driving nut 4100-344 4100-347 Bellows, Teflon (for pump) 4100-349 Ring 4100-375 Bush VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 101 MICRO & MICROLAB-200 EXPLODED VIEWS exploded pump and flowcell VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 102 TRANS BC 549 B T 6-11,14,17,20-24 3331-024 TRANS 2N2219 T 16 3331-214 TRANS BC 559 B T 13,15 3331-415 TRANS IRFZ 20 T 1-5,18,19 3333-018 IC OP 07EP IC 6 3333-019 IC OP400 QUAD OP.AMP IC 5 5.10 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 103 3335-032 IC 74 HCT 32 IC 39,42 3335-042 IC 74 HCT 42 IC 37 3335-074 IC 74 HCT 74 IC 29 3335-138 IC 74 HCT 138 IC 28 3335-139 IC 74 HCT 139 IC 38 VITAL SCIENTIFIC SERVICE MANUAL 5.11...
  • Page 104 MICRO & MICROLAB-200 EXPLODED VIEWS layout of components (3376-300 1B) 5.12 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 105 MOUNTING SET.TO-220 T 1-5,18,19 3370-353 MOUNT.PAD TO5-001 T 16 3370-525 SCREWLOCKS FEMALE PL 1,3,4 3381-071 OPTOCOUPLER.MCT 6 OC 1 3390-002 AUDIO.INDICAT. AI 550 BZ 1 3390-016 CRYSTAL 32.768KHZ-TQ5300 3390-027 CRYSTAL 7.3728 Mc-HC 18 3390-125 BATTERY 2.4V VITAL SCIENTIFIC SERVICE MANUAL 5.13...
  • Page 106 MICRO & MICROLAB-200 EXPLODED VIEWS 6001-616 1/5 CPU 5.14 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 107 MICRO & MICROLAB-200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5.15...
  • Page 108 MICRO & MICROLAB-200 EXPLODED VIEWS 6001-616 2/5 KIO, I/O 5.16 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 109 MICRO & MICROLAB-200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5.17...
  • Page 110 MICRO & MICROLAB-200 EXPLODED VIEWS 6001-616 3/5 Temperature control 5.18 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 111 MICRO & MICROLAB-200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5.19...
  • Page 112 MICRO & MICROLAB-200 EXPLODED VIEWS 6001-616 4/5 Amplifier, lin/log converter photometric signal. 5.20 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 113 MICRO & MICROLAB-200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5.21...
  • Page 114 MICRO & MICROLAB-200 EXPLODED VIEWS 6001-616 5/5 Drivers 5.22 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 115 MICRO & MICROLAB-200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5.23...
  • Page 116 C 1-16 3320-210 CAP.CER. 10NF 40V C 17,19,21 3320-311 CAP.CER. 0.1µF 50V C 18,20 3335-153 IC 74 HCT 153 IC 1,2 3353-068 CONN 2X7PM 826470-7 PL 2 3353-123 CONN 1X16PM 1-825437-6 PL 1 layout of components 5.24 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 117 MICRO & MICROLAB-200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5.25...
  • Page 118 MICRO & MICROLAB-200 EXPLODED VIEWS 6001-721 1/1 keyboard connection board 5.26 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 119 MICRO & MICROLAB-200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5.27...
  • Page 120 MICRO & MICROLAB-200 EXPLODED VIEWS WIRING VITALAB MICRO 6001-710 1/1 5.28 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 121 MICRO & MICROLAB-200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5.29...
  • Page 122 MICRO & MICROLAB-200 EXPLODED VIEWS WIRING MICROLAB-200 6001-950 1/1 5.30 VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 123 MICRO & MICROLAB-200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5.31...
  • Page 125 MICRO & MICROLAB-200 SERVICE INFO'S 6 SERVICE INFO'S Number Subject VITAL SCIENTIFIC SERVICE MANUAL...
  • Page 126 MICRO & MICROLAB-200 SERVICE INFO'S VITAL SCIENTIFIC SERVICE MANUAL...

This manual is also suitable for:

Vitalab microlab 200

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