VITAL SCIENTIFIC Vitalab Micro, Service Manual

Page 1: ...VITALAB MICRO MICROLAB 200 VITAL SCIENTIFIC SERVICE MANUAL VITAL SCIENTIFIC SERVICE MANUAL...

Page 2: ...VITALAB MICRO MICROLAB 200 VITAL SCIENTIFIC SERVICE MANUAL p n 3086 333 Copyright 1995 Release January 31 st 1995...

Page 3: ...VITALAB MICRO MICROLAB 200 VITAL SCIENTIFIC SERVICE MANUAL...

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Page 5: ...design 1 3 1 2 4 Fluid system description 1 4 1 3 FUNCTIONAL DESCRIPTION 1 7 1 3 1 Introduction 1 7 1 3 2 System Organization and Data Structure 1 7 1 3 3 Signal Processing 1 7 1 3 4 Temperature cont...

Page 6: ...3 7 3 3 PREVENTIVE MAINTENANCE 3 8 3 3 1 Introduction 3 8 3 3 2 Yearly maintenance 3 8 3 4 SPECIAL SERVICE TOOLS 3 9 3 5 MAINTENANCE PROCEDURES 3 10 3 5 1 Cover cleaning 3 10 3 5 2 Remove cover 3 10 3...

Page 7: ...DIAGRAMS 5 1 5 1 EXPLODED VIEW of COVER 5 2 5 2 EXPLODED VIEW of BASEPLATE 5 4 5 3 EXPLODED VIEW of OPTICAL BLOCK 5 6 5 4 EXPLODED VIEW of PUMPUNIT and FLOWCELL 5 8 5 5 PROCESSORBOARD 6001 616 5 10 la...

Page 8: ...VITALAB MICRO MICROLAB 200 VITAL SCIENTIFIC SERVICE MANUAL iv...

Page 9: ...an operator interface which is user oriented and friendly to meet individual requirements of clinical chemistry laboratory 40 tests can be defined and programmed by the user to meet individual require...

Page 10: ...roubleshooting information are included The Service manual has been prepared for service engineers involved in maintaining and repairing any of the modules of the analyzer It contains preventive corre...

Page 11: ...ed 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...

Page 12: ...charge WARRANTY Refer to the section General Conditions of Sale in the Price list for the warranty policy Unless specified otherwise a warranty period of three Months will be applicable for repaired p...

Page 13: ...t is possible to organize a course at the customers site Participants are expected to have knowledge of modern analog digital electronics microprocessor techniques basic photometric techniques the Eng...

Page 14: ...d 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 t...

Page 15: ...VITALAB MICRO MICROLAB 200 PREFACE VITAL SCIENTIFIC SERVICE MANUAL xi...

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Page 17: ...ar curve 1 2 PHYSICAL DESCRIPTION 1 2 1 Introduction The analyzer is a compact instrument of modern and straight forward design This design has been engineered with a precise simplicity which will ass...

Page 18: ...VITALAB MICRO MICROLAB 200 GENERAL DESCRIPTION VITAL SCIENTIFIC SERVICE MANUAL 1 2 methods to be used In figure 1 1 a functional diagram given of the complete instrument Figure 1 1 Functional diagram...

Page 19: ...nductive paint which is connected to system ground The instrument is controlled via the 52 key foil keyboard Other operators controls are the 16 lines by 20 characters LCD display alphanumeric printer...

Page 20: ...he test carried out on the moment the microprocessor will automatically under program control set the filterwheel to the correct position For the high wavelength range a filter with a low transmittanc...

Page 21: ...B 200 GENERAL DESCRIPTION VITAL SCIENTIFIC SERVICE MANUAL 1 5 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 Fi...

Page 22: ...sition is called zero This means that when aspirating the bellows will move downwards and by the waste cycle move upwards again to his zero point as found by reset From the pump cover there is also a...

Page 23: ...and is used for storage of intermediate results stack etc The non volatile section consists of one 32 Kbytes static CMOS RAM and is used for storage of tests results controls etc The back up power sou...

Page 24: ...ents 20 are actual measurements derived from the sample currently in process The other 20 are comparison measurements derived from a fixed reference source Each of these reference values is used to co...

Page 25: ...source with a nominal value after conversion of 2 000 Abs The discharge time is measured by starting a counter the instant the actual discharge is activated The counter will be stopped the moment both...

Page 26: ...in setting is performed by utilizing a method of successive approach commonly used in A D converters 1 3 4 Temperature control Temperature control of the flowcell has been achieved by means of two sma...

Page 27: ...ircuit will be automatically turned off by the microprocessor to prevent overload of electronic components and extreme heating of the flowcell The temperature error message will displayed continuously...

Page 28: ...VITALAB MICRO MICROLAB 200 GENERAL DESCRIPTION VITAL SCIENTIFIC SERVICE MANUAL 1 12...

Page 29: ...processor board contains all logic and components necessary to operate or control the instrument The main electrical part is the processor board This board is detailed in 5 separate drawings which ca...

Page 30: ...the EPROM s must be the same The system RAM data memory consists of two static RAM s One of these RAM s 32 Kbytes has a battery back up and is therefore a non volatile RAM The 8 Kbytes RAM is used for...

Page 31: ...character Busy will also be active during the physical printing action and during paperfeed operations Just prior to removal of the busy signal another signal which is also typical for the Centronics...

Page 32: ...s etc is transferred with a fixed format The interface connection consists of a standard 25 pole D connector female The baud rate is software programmable and is controlled by the CTC which is integra...

Page 33: ...the fourth signal G3 The same fourth signal which controls the relay controls also FET switch IC11A and has a compensation function This FET switch will switch resistor R89 into the circuit from ampli...

Page 34: ...t is not able to produce a gain resulting that the Absorbance value is within the blank range an error will be displayed Right after blanking the output voltage of the input amplifier will be somewher...

Page 35: ...number of FET switches IC13 The digital part of the circuit consists of a counter timer control CTC which is integrated in the KIO At the start of the logarithmic conversion capacitor C19 will be char...

Page 36: ...de the CTC Note that the CTC is integrated in the KIO When the logarithmic signal becomes less than the measuring reference signal the output of comparator IC15 is dropped low and the high frequency c...

Page 37: ...out as described before When a reference value is measured which is outside the specified range the instrument will display ERROR instead of the Absorbance value Finally the switch marked S2 in the d...

Page 38: ...h are mounted on the processor board and a dual thermistor element which is the actual sensor The sensor is mounted inside the flowcell assy and is firmly pressed in a hole in the outside wall of the...

Page 39: ...VITALAB MICRO MICROLAB 200 THEORY OF OPERATION VITAL SCIENTIFIC SERVICE MANUAL 2 11 Peltier element driving circuit Figure 2 5 Block diagram temperature control...

Page 40: ...t of IC6 Therefore IC8 will produce an output voltage of 0V when the thermistor temperature is equal to 15 C and will increase by approximately 400 mV C Differential amplifier The second stage of the...

Page 41: ...quired is fed directly to the inverting input of one of the followers and to the non inverting input of the other follower The two outputs are connected together via diode s and connected to the switc...

Page 42: ...nt through the Peltier elements is then going via T1 the Peltier elements and via T4 to ground If the measured temperature is higher than the requested temperature the output voltage of IC4C will be p...

Page 43: ...thermistor network and the 286 4 mV for the 15 C reference IC8 2 2 11 System component drivers There are in total 3 stepper motor drivers integrated on the processor board They control the filter whe...

Page 44: ...ever is activated This board is designed in such a way that it reduces the light coming from the lamp 2 4 OPTICAL BLOCK The most important parts of the optical block are 20W halogen lamp 6 IFL filters...

Page 45: ...Time Lag on board CAUTION Serious safety hazard exists on the metal parts of the switched power supply because of high voltage Remove the power cable before working on the unit 2 5 1 input output con...

Page 46: ...sidered as one module and is mounted inside the top cover The module operates at a low voltage has a low power consumption and is suitable for graphic 160x128 figure and character 16x20 display Amongs...

Page 47: ...L Display data 0 13 D1 H L Display data 1 14 D2 H L Display data 2 15 D3 H L Display data 3 16 D4 H L Display data 4 17 D5 H L Display data 5 18 D6 H L Display data 6 19 D7 H L Display data 7 20 NC N...

Page 48: ...EORY OF OPERATION VITAL SCIENTIFIC SERVICE MANUAL 2 20 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 signi...

Page 49: ...he rear side of the instrument The printer is powered by an external power supply available in two types of transformers 120VAC 60Hz and 240VAC 50Hz Because of the design and price of the printer no s...

Page 50: ...D flashes Power LED green Lights when power is supplied to the printer Paper feed switch Holding down this switch feeds the paper continuously Paper feed is valid only when the offline LED lights or f...

Page 51: ...CRO MICROLAB 200 THEORY OF OPERATION VITAL SCIENTIFIC SERVICE MANUAL 2 23 zigzag pattern alternate dots for 10 lines Self test printing ends automatically after printed the test pattern Figure 1 8 Tes...

Page 52: ...SW6 SW7 International set See table below LANGUAGE SW6 SW7 SW8 Japanese ON ON ON American off on on German on off on English off off on French on on off Spanish off on off Italian on off off Swedish o...

Page 53: ...ITAL SCIENTIFIC SERVICE MANUAL 2 25 300 bps on off on 600 bps on off off 1200 bps off on on 2400 bps off on off 4800 bps off off on 9600 bps off off off Default settings SWITCH 1 2 pos 1 2 3 4 5 6 7 8...

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Page 55: ...s dirt etc may affect the performance of the instrument For the line voltage a clean connection should be selected Additional connections of instruments with high surge on peak currents to the same ou...

Page 56: ...install the paper roll of the printer as described in the Operating manual Connect the power cord and turn power on wait for the start up display Check the date and time and if the filter settings are...

Page 57: ...R REAR VIEW Note Only equipment which comply with the relevant safety standard shall be connected A Cover B Waste connection C Fuse holder D Mains entry E Power switch F Mains cable G Power supply pri...

Page 58: ...female 25 pole D connector Serial interface connector pin assignment Signal name Pin location Direction Abbreviation Frame Ground 1 1 Signal Ground 7 1 Transmitted Data 2 output TXD Received Data 3 in...

Page 59: ...ARAMETERS RS232 INTERFACE format off output switched off prin output for serial printer comp output for computer stop bits 1 1 5 2 bits char 5 6 7 8 parity no even odd baud rate 2400 fixed Once progra...

Page 60: ...lished the serial interface format Baudrate and interface connections some points still remain Data format Character set Output buffer 3 2 4 1 Data format for computer There are two serial data format...

Page 61: ...name C Patient name N number space R space S space C Patient number N sequence_number 0 R Calibration number 1 10 S 0 C Sequence number N repeat_number Repeat number R Calibration number 1 3 S Repeat...

Page 62: ...D E F G H I J K L M N O 5 P Q R S T U V W X Y Z _ 6 a b c d e f g h i j k l m n o 7 p q r s t u v w x y z 3 2 4 3 Output buffer All information for serial transmission goes via a buffer This buffer i...

Page 63: ...operates at the optimum design potential and to assure high MTBF a program of scheduled preventive maintenance is recommended Note that maintenance which can and should be performed by the operator is...

Page 64: ...capacitors and a push button switch By means of this test box the 2 Abs point of the Instrument can be calibrated Figure 6 10 2 Abs test box circuit diagram Operation of the circuit is as follows A n...

Page 65: ...te of the instrument 4 Pull the cover forward and then lift it The cables to the display and keyboard are long enough so the cover can be placed next to the baseplate leaving the connections intact 3...

Page 66: ...to replace the pressure safety tubing 2 Remove the pump cover by turning the 4 screws one turn at the time to prevent the pump cover to break 3 Remove the remaining fluid from the bellows and remove...

Page 67: ...6 enter to select a gain with an Absorbance value between 0 000 and 0 400 5 Press the button on the testbox the change on ABSORBANCE must be 2 000 mAbs 10 mAbs If the reading is out of range proceed w...

Page 68: ...rt the filterwheel in the optical block Switch the instrument on The instrument will now perform a power up reset to find the reset position of the filterwheel 3 5 8 Flowcell removal 1 Remove the cove...

Page 69: ...the flowcell block The actual thermistor is mounted on a small PC board and the whole assy can be removed by loosening 2 plastic screws When replacing the assy put some thermal joint compound on the s...

Page 70: ...erum to check correct functioning After the flowcell has been re assembled the system should be flushed with a solution of re distilled water and a neutral detergent Mucasol 5 10 detergent for approx...

Page 71: ...ssion horizontal adjustment 3 Fasten screw B place the top cover etc 3 5 12 Valve replacement The valve unit is mounted with 2 screws When replacing the valve unit take care to place the rings under t...

Page 72: ...ws and spindle and screw the pump cover on its place tighten the 4 screws turn by turn The pump will reset automatically when switching on the instrument again 3 5 14 Tube replacement There are 5 diff...

Page 73: ...hed on automatically a series of tests to check the correct functioning of the microprocessor and the memories are done The instrument will perform a check of the RAM memory by writing certain data an...

Page 74: ...position the sequence is repeated using 0 bits stead If this test fails an audio alarm is generated if possible and the system hangs 3 EPROM test During this test the contents of the program memories...

Page 75: ...main menu will be displayed on the display The instrument will reset the filterwheel by stepping until the reset opto is 1 then it steps further until the opto is 1 again The number of steps counted d...

Page 76: ...age 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...

Page 77: ...VITALAB MICRO MICROLAB 200 INSTALLATION MAINTENANCE VITAL SCIENTIFIC SERVICE MANUAL 3 23...

Page 78: ...en we find the software release number and the date and time of conversion ANALYZER CONTROL 1 FILTER By means of pressing 1 one of the eight desired filter positions can be selected The filterwheel wi...

Page 79: ...ime switch in front or via remote control is closed FILTER RESET X 0 filterwheel is not in reset position 1 filterwheel is in reset position At position number 1 of the filterwheel a reset hole is mad...

Page 80: ...with the help of a built in SERVICE routine In order to perform the adjustments and checks remove the cover as described in section 3 5 2 place the cover on its right side next to the Analyzer and kee...

Page 81: ...table Absorbance readings as well 3 6 5 Processor board powerboard adjustment Initial setting Turn power on and allow 15 minutes warm up after cold start The contrast of the display can be adjusted wi...

Page 82: ...emove PL6 and connect the 2 Abs testbox without its voltage cable 2 2 Measure TP17 with respect to TP15 and adjust P10 for 0V 0 5mV 2 3 Open switch S2 and adjust P11 in such a way that the reading on...

Page 83: ...tween 0 791 and 0 841 3 5 Select gain factor 8 The DELTA Abs value must be between 1 608 and 1 658 4 Battery check 4 1 Switch off the instrument and measure on the positive pole right side the battery...

Page 84: ...r the voltage to stabilize 5 6 Select 30 C 5 7 Measure TP9 with respect to TP10 and adjust P3 for 368 6 mV 0 2mV Wait for the voltage to stabilize 5 8 Select 25 C 5 9 Measure TP9 with respect to TP10...

Page 85: ...id dirt etc can all affect the performance of an instrument For sensitive photometric equipment high intensity light direct sunlight or from artificial sources might affect the operation as well In ad...

Page 86: ...mark In general fluid system obstruction only occurs if polluted sample has been used of insufficient cleaning has taken place Inform your customer Cause 2 Valve tubings are inserted wrong Action Chec...

Page 87: ...nstable display readings is an additional indication Symptom B Insufficient aspiration but flush mode operates normally Cause 1 Programm error Action Check sipper volume in test parameters 4 3 Tempera...

Page 88: ...that it is still operational 4 5 ERROR instead of result Symptom A Instead of the measurement the message ERROR will appear Cause 1 The Absorbance value of the reagent sample mixture is out of range...

Page 89: ...nt for at least 10 minutes by 37 C Cause 2 Air bubbles in flowcell due to leakage of the fluid system Action Check all tubing connections of the fluid system especially those before the flowcell Cause...

Page 90: ...measurement too short Action Check and increase delay if necessary Cause 2 Insufficient thermal contact between temperature sensor and flowcell Action Check and add some thermal compound if necessary...

Page 91: ...tem since this can affect the performance of the instrument If soldered components need replacement it is advised to prevent damage of the PC board to cut the pins of the suspected device and de solde...

Page 92: ...VITALAB MICRO MICROLAB 200 INSTALLATION MAINTENANCE VITAL SCIENTIFIC SERVICE MANUAL 4 8 board...

Page 93: ...LODED VIEWS Cover 6001 712 5 2 Baseplate 6001 713 5 4 Optical block 6001 392 5 6 Pumpunit 6001 314 5 8 Flowcell 6000 977 5 8 ELECTRICAL DIAGRAMS Processorboard 6001 616 5 10 Keyboard connection board...

Page 94: ...ough 63 3370 403 Cable clip NX1 64 3370 407 Cable clip 65 3370 430 Tie wrap 66 3374 043 Cable assy PCB keyboard 67 3374 041 Cable assy PCB LCDdisplay 68 3380 018 Lamp Quartz iodine 12V 20W 69 6001 327...

Page 95: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 3 exploded cover...

Page 96: ...hrough 63 3370 403 Cable clip NX1 64 3370 407 Cable clip 65 3370 430 Tie wrap 66 3374 043 Cable assy PCB keyboard 67 3374 041 Cable assy PCB LCDdisplay 68 3380 018 Lamp Quartz iodine 12V 20W 69 6001 3...

Page 97: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 5 exploded baseplate...

Page 98: ...through 63 3370 403 Cable clip NX1 64 3370 407 Cable clip 65 3370 430 Tie wrap 66 3374 043 Cable assy PCB keyboard 67 3374 041 Cable assy PCB LCDdisplay 68 3380 018 Lamp Quartz iodine 12V 20W 69 6001...

Page 99: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 7 exploded optical block...

Page 100: ...053 Feed through 63 3370 403 Cable clip NX1 64 3370 407 Cable clip 65 3370 430 Tie wrap 66 3374 043 Cable assy PCB keyboard 67 3374 041 Cable assy PCB LCDdisplay 68 3380 018 Lamp Quartz iodine 12V 20W...

Page 101: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 9 exploded pump and flowcell...

Page 102: ...304 032 RES WW 0 22 R 107 3305 249 RES METAL 30M R 82 3306 474 RES 6K98 R 52 3306 504 RES 10K1 R 51 109 3306 622 RES 25PPM 215K R 53 3306 733 RES METAL 2M2 R 32 3310 028 POTM S T 10K P 12 3312 106 POT...

Page 103: ...IC L296 IC 1 3333 323 IC REF 01 HP IC 12 3333 508 IC CMP 01 EP IC 15 3333 514 IC DG 212 CJ IC 3 11 13 53 3333 532 MA 232 CPE 5V IC 41 3333 545 L 6202 DMOS BRIDGE 1 5A IC 17 19 21 23 25 27 3335 000 IC...

Page 104: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 12 layout of components 3376 300 1B...

Page 105: ...3351 205 CONN 4P 0 825433 4 PL 8 3351 213 CONN 4P 87633 4 PL 10 3351 216 CONN 280610 2 PL 20 3351 235 CONN 4P 826467 4 PL 19 21 23 3352 011 CONN 280611 2 PL 12 3352 014 CONN 6P 826467 6 PL 5 3352 080...

Page 106: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 14 6001 616 1 5 CPU...

Page 107: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 15...

Page 108: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 16 6001 616 2 5 KIO I O...

Page 109: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 17...

Page 110: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 18 6001 616 3 5 Temperature control...

Page 111: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 19...

Page 112: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 20 6001 616 4 5 Amplifier lin log converter photometric signal...

Page 113: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 21...

Page 114: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 22 6001 616 5 5 Drivers...

Page 115: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 23...

Page 116: ...BOARD 6001 721 P N DESCRIPTION REFERENCE 3315 033 RES NW 10X4K7 RN 1 3320 100 CAP CER 1NF 40V C 1 16 3320 210 CAP CER 10NF 40V C 17 19 21 3320 311 CAP CER 0 1 F 50V C 18 20 3335 153 IC 74 HCT 153 IC 1...

Page 117: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 25...

Page 118: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 26 6001 721 1 1 keyboard connection board...

Page 119: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 27...

Page 120: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 28 WIRING VITALAB MICRO 6001 710 1 1...

Page 121: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 29...

Page 122: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 30 WIRING MICROLAB 200 6001 950 1 1...

Page 123: ...MICRO MICROLAB 200 EXPLODED VIEWS VITAL SCIENTIFIC SERVICE MANUAL 5 31...

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Page 125: ...MICRO MICROLAB 200 SERVICE INFO S VITAL SCIENTIFIC SERVICE MANUAL 6 1 6 SERVICE INFO S Number Subject 1 2 3 4 5 6 7 8 9 10...

Page 126: ...MICRO MICROLAB 200 SERVICE INFO S VITAL SCIENTIFIC SERVICE MANUAL 6 2 11 12 13 14 15...