Service Manual Erba Chem 7 (ERBA) [PDF]

Citation preview

ERBA Diagnostics Mannhiem GmbH Friedrichsring, 4 Mannheim, 68161 Germany Phone: + 49 621 1780960 Fax: + 49 6211780969 E-Mail: [email protected] CHEM-7 – Service Manual (Rev 1.0 – Feb.05)



-i-



TABLE OF CONTENTS CHAPTER



PAGE No.



1. INTRODUCTION…………………………………………………………………………5 2. SAFETY PRECAUTIONS…………………………….………….………………………7 3. SYSTEM SPECIFICATIONS AND FEATURES………………………………………9 4. INSTALLATION…………………………………………………………………………..13 5. BLOCK DIAGRAM……………………………………………………………………….19 6. FUNCTIONAL DESCRIPTION OF PCB……………………………………………….21 7. TESTING AND CALIBRATION…………………………………………………………35 8. MAINTENANCE…………………………………………………………………………..43 9. TROUBLESHOOTING GUIDE………………………………………………………….53 10. SPARE PARTS…………………………………………………………………………..59 11. ANNEX –1….……………………………………………………………………………..63



CHEM-7 – Service Manual (Rev 1.0 – Feb.05)



- ii -



CHAPTER 1 INTRODUCTION The ERBA CHEM-7 hereafter referred, as an analyzer is a compact, high performance, 16bit micro Controller based semiautomatic biochemistry analyzer for routine Chemistries, Electrolytes, Immunoassays, Hormones, coagulation and Drug tests. There are 10 modes of operation, including the coagulation mode. Programming, reading and reporting operations are user friendly. Operation is through a soft-touch keyboard with quick shift from one function to another without going through complex sequential operations. The analyzer is provided with a 320x240 dots backlit display with alphanumeric and graphic capabilities. A patient-wise collated report is obtained upon request. Exhaustive Quality Control Data at 2 levels, for any of the tests can also be stored in the memory of the Analyzer. The software is complete with the device diagnostics self test function capable of providing timely flag / error messages related to Test results or analyzer malfunctioning. The State-of-Art features, advanced optics, versatile analytical capabilities and economy of 18 µl flowcell makes it the analyzer of choice for all laboratories. This analyzer is intended to be used: -For In-vitro quantitative and qualitative determination of wide range of analytes in body fluids as mentioned above. -By a trained personnel in a controlled environment and continuously monitored operation.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05)



-1-



CHAPTER 2 SAFETY PRECAUTIONS Operator / service personnel safety is a primary concern. This section provides safety information about analyzer. Use this product properly and safely to prevent injuries and or damage to property. User must read this safety precaution and follow the directions. GENERAL SAFETY: While operating, maintaining, servicing or repairing the analyzer, follow all the procedures described in this manual. Use only with the Transasia supplied power adapter. Always ensure that mains switch is off while connecting or removing or servicing the analyser. Observe all WARNINGS and CAUTIONS posted on the system or described in this manual. Avoid contact with all electrical circuits of analyzer observe CAUTIONS posted on the analyser. Never use substitute parts on the analyzer or modify it in any way. Use ERBA wash to clean the flowcell.



CAUTION: NEVER OPERATE ON A WET OR DAMP SURFACE



CHEM-7 – Service Manual (Rev 1.0 – Feb.05)



-2-



CHAPTER 3 SYSTEM SPECIFICATIONS & FEATURES A.



HARDWARE SPECIFICATION



1.



SYSTEM TYPE



2.



MEASUREMENT PRINCIPLE : Colorimetry (Rate/End Point), Turbidimetry, Immunoassay



3.



APPLICABLE ANALYTES



4.



SETUP



Photometric assays – Enzymes, lipid, protein, Inorganic substances & others. Turbidimetric Assay – IgG, IgA, C3, C4, RF etc. : Benchtop.



5.



LIGHTSOURCE



: Quartz Halogen Lamp, 12V, 20 Watts.



6.



PHOTOMETRIC RANGE



:



0 ~ 2.5 O.D. (Range 340~670nm) Resolution 0.0001.



7.



OPTICS



:



8 wavelength static photometric group with following interference filters: 340, 405, 450, 505, 546, 578, 600, 670 nm.



8.



DETECTORS



: 8 UV / VIS Silicon photodiodes.



9.



CUVETTE



: Unique triple cuvette system: 18 µl Flowcell 10 mm square cuvette 6 mm round Glass Tube for Coagulation ELISA tests.



10. THERMOSTAT



: Peltier temperatures control for 25, 30 and 37°C ±0.1°C and Control OFF



11. MEASUREMENT VOLUME



: 18µl



12. SAMPLE ASPIRATION



:



13. PRECISION



: Open, Flowcell.



:



By means of a peristaltic pump, Aspiration Volume programmable from 200µl to 999µl. : Better than 1% CV.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05)



-3-



14. KEYBOARD



: Rugged water proof, membrane panel. 41 fixed and 6 dynamic keys.



15. MAINS SUPPLY



:



16. PRINTER



: High resolution, 320 dots per line, thermal Type with full graphics facility and option for connecting external printer.



17. DISPLAY



: High resolution Graphics LCD 320x240, with backlit. View area: 120x92 mm



18. INTERFACES



: Serial RS 232C port for interface with host computer. External PC keyboard.



19. PROCESSOR



: 16-bit with 256KB Flash Memory



20. MEMORY



: Non volatile 192 KB expandable to 384KB For storage of Patient data, QC and Parameters



21. REAL TIME CLOCK



:



22. WASTE COLLECTION



: Waste collected in closed container.



23. INCUBATOR



: Optional external incubator.



24 V DC using External Universal SMPS adapter maxi. power 100W, 115/230V AC, 50/60 Hz.



Inbuilt



24. OPERATING TEMPERATURE :



20 – 40 Degree Celsius



25. STORAGE TEMPERATURE



:



-10 to + 50 Degree Celsius.



26. HUMIDITY



:



Max.80% RH, non-condensing.



27. SIZE



:



220(H) x 430 (W) x 235 (D) mm



28. WEIGHT



:



Approximately 8 kg.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05)



-4-



B.



SOFTWARE SPECIFICATIONS



10 analytical modes of operation: 1-point Linear. 2-point Linear. Rate A Linear. 1-point Non-Linear (Cubic Spline)./Point to point 2-point Non-Linear (Cubic Spline)./Point to point Rate A Non-Linear (Cubic Spline)./Point ot point 1-point Sample Blank Linear. 1-point Sample Blank Non-linear (Cubic Spline)/point to point Absorbance. Coagulation. 200 totally “open” test programs selectable through keyboard of which 56 chemistries are through direct access keys. Parameters can be viewed, edited, and printed. Facility to memorize reagent blank O.D., Sample Blank OD, Standard O.D., factor, Non-linear curve. Report generation for 1000 last samples are stored and obtained by - Date. - I.D. - Both by date and I.D. Graphic presentation of Non Linear calibration curves. QC (Levy Jennings Chart available for two controls per test) - Daily QC - Monthly QC Rate calculation by least square regression method. Automatic zeroing. Total reaction time: Selectable delay time between 5 seconds and 999 seconds. Selectable read time between 5 seconds and 999 seconds. CHEM-7 – Service Manual (Rev 1.0 – Feb.05)



-5-



Non-linear calibration (One blank and 5 standards). On-line reagent stability check. Substrate depletion / Non-linearity check. In built reaction non-linearity check. Monochromatic as well as bichromatic measurements possible. Calibration of peristaltic pump. On-line display of cuvette temperature. On-line help. Self-diagnostics. Help messages on erroneous entry.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05)



-6-



CHAPTER 4 INSTALLATION INSPECTION: The analyzer is tested before shipment and is packed carefully to prevent any shipping damage. It is user’s responsibility to inspect all cartons upon arrival and notify the carrier of any apparent damage. Follow the steps described in the paragraphs below to install the analyzer. UNPACKING: The main unit and accessories are packed in single carton. Reagents and other additional accessories such as power adapter, power cord may be packed in another carton. The representative is responsible for unpacking, installing and initial setting up of the analyzer. ***The accessory list is as shown below. Sr.No. 1 2 3 4 5 6 7 8 9 10 11 12 13



1 2 3 4 5 6 7 8 9



CODE NO. RCNLT000042NLBN RELEA000588NIBN LMAWB000001NIBN REMOTD000929NLBN RMEG1000004NLCN RLCOT000004NIBN RCNGN000002NLCN RNEH0D00057NLBN RNEOT000867NMBN REKT 921 RCNTP000005NLCN RELPS000007NIBN LMAPM000010NIBS LEMLH000004NIAN RMESY000013NLAN



DESCRIPTION



USER MANUAL POWER CORD 2 PIN WASTE BOTTLE ASSEMBLY WASTE BOTTLE STAND ALLEN KEY 3 MM POLYSTYRENE RECTANGULAR MICRO CUVETTE ROUND GLASS MICROCUVETTE ID 6 MM TEST TUBE HOLDER DUST COVER ERBA WASH KIT (4 X 50 ML.) THERMAL PAPER ROLL (57 MM X 30 M SET OF 3) POWER ADAPTER (SMPS) P.M.KIT CONSISTING OF LAMP ASSEMBLY SYRINGE 5 µ L PERSTALTIC TUBE-FLOROSILICON RTBSI000031NIBN (2X4.3X90MM) RELTB000003NIBN TUBE TEFLON (0.58 X 1.6 X 210 MM)-ASPIRATION RTBPB000001NLCN TUBE PVC (2.8 X 4.3 X550 MM) -WASTE RELTB000002NIBN TUBE TEFLON (1X 2 X 40 MM) - FLOWCELL OUT TUBE SILICON(2X4X 36 MM) FLOWCELL TO RTBSI000001NLCN PUMP RTSOT000056NICN O RING (FLOWCELL) OPTIONAL ACCESSORIES LMPOT000076NIAN BATTERY BACKUP UNIT BB150 FCNAPNAN0003 AUTO PIPETTE 5- 50 µ L FCNAPNAN0006 AUTO PIPETTE 200-1000 µ L RMEOTB00365NLB1 AUTO PIPETTE STAND RLCOT000001NLCN DISPOSABLE TIPS (YELLOW) RCNDT000002NLCN DISPOSABLE TIPS (BLUE) FINBICHM002 INCUBATOR ASSEMBLY RCNGN000003NLCN TEST TUBE STAND FREBCERM0061 DEMO KIT



QTY. 1 NO. 1 NO. 1 NO. 1 NO. 1 NO. 10 NOS. 10 NOS. 1 NO. 1 NO. 1 NO. 3 NOS. 1 NO. 1 NO. 1 NO. 1 NO. 4 NOS. 1 NO. 1 NO. 1 NO. 1 NO. 2 NOS. 1 NO. 1 NO. 1 NO. 1 NO. 100 NOS. 100 NOS. 1 NO. 1 NO. 1 NO.



** Please refer to dispatch note for detailed checklist.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05)



-7-



INSTALLATION REQUIREMENTS: The proper location is an important consideration, a poor location can lead to malfunction of the analyzer. Please follow our environmental and electrical suggestions to ensure the accuracy and precision of the analyzer and to maintain a high level of safety for your personnel. Since the analyzer is comparatively smaller, it can be comfortably accommodated on any standard sized table. Remember that a minimum 30cm. space is maintained between the rear panel and the wall to allow for heat dissipation. The waste bottle should be placed below or on the same level as the analyzer. NOTE: Problem(s) resulting from the relocation of the analyzer done by unauthorised service representative are not covered under warranty. ELECTRICAL REQUIREMENTS: Voltage & Frequency



:



Single phase continuous stabilized AC 230/115 V ± 10%, 50 / 60 Hz.



Grounding



:



Perfect earthing must be provided at power source with all applicable local requirement (A grounded, 3 pin power plug only should be used).



Plug Points



:



1 No. of 15/5 amps outlet and 2 No. of 5 Amp sockets should be available near the mounting desks. (Normally only one socket is required per analyzer and 2 extra sockets are recommended for using any measuring equipment and engineering tool if required while servicing). Failure to properly ground the analyzer bypasses important safety features and may result in an electrical hazard Heavy duty electrical devices like Air conditioners, refrigerators, oven’s etc., should not be operated on the same electrical lines as the analyzer.



Please ensure while taking any electrical measurement the multimeter used must have valid calibration identification. The AC power adapter supplied with the analyser can be used between 90 – 260 V AC, 50/60 Hz, supply which makes the power supply suitable for use, universally. Also ensure that the power supply should be placed at a distance easily accessible to the user. This will help the user to switch OFF the instrument immediately during any emergency. CHEM-7 – Service Manual (Rev 1.0 – Feb.05)



-8-



INSTALLATION PROCEDURE: 1. Unpack the analyzer and other accessories from the box. 2. Check if anything is physically damaged, if damaged report your local branch immediately. If everything is OK then 3. Remove the waste bottle and place it on the table. 4. Direct the tubing from the analyzer into the waste bottle. 5. The Analyzer comes equipped with an external AC power adapter and one three pin power cord, 3-pin power cord for the External AC adapter. 6. Proper use of the appropriate power cord assures adequate grounding for the system. Failure to properly ground the analyzer bypasses important Safety features and may result in an electrical hazard. 7. Connect the 3 Pin Cord of the External SMPS to the mains socket & check the output of the SMPS it should be 24 V +/ - 0.5 V. 8. If the output of the SMPS adapter is within the range then connect the DC power jack to the INPUT port provided at the rear of the analyser. 9. Then check the printer for presence of paper (refer below procedure for the printer installation. PRINTER HOUSING AND PRINTER PAPER INSTALLATION: The analyser is designed to interface with external devices such as hp deskjet printer and PS/2 keyboard. These devices can be attached to the analyser using appropriate cables which comes along with the optional devices on the port/ connector as marked on the rear of the analyser. INTERNAL PRINTER PAPER INSTALLATION To replace the paper roll, pull up release lever and remove the old roll spindle, which is anchored inside the paper-holder housing. Cut out the end of the new paper roll in a ‘V’ shape, and slip the point of the “V” under the grey rubber roller so that the paper comes out of the upper part and close the lock lever. Refer below Figure 1 for proper routing and installation.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05)



-9-



NOTE :



!



The thermal paper used must match the specification of the original one, since the calibration of the working temperature is optimized for that kind of paper. Failure to use proper quality of paper may permanently damage the printer.



CAUTION: RISK OF DANGER: DO NOT TOUCH THE PRINTER PAPER CUTTER EXTERNAL PRINTER INSTALLATION: Switch off the analyzer before connecting Hewlett Packard (hp) make printer. This is one of the additional features provided in the analyzer. User can connect the external deskjet printer using standard centronics cable to printer port provided on rear of analyzer. To select or deselect printer press system setup key and then press output mode and follow appropriate instructions on LCD display. Ensure the cable connected is tightened properly. Note: Use only Hewlett Packard Deskjet printer. EXTERNAL KEYBOARD INSTALLATION: Switch off the analyzer before connecting PS/2 keyboard. Then connect to the port provided at the rear of the analyzer.



External Printer Port



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



Serial Com Port



PS/2 External Keyboard



- 10



CHAPTER 5 BLOCK DIAGRAM THERMAL PRINTER



LCD



PHOTOMETER JUNCTION PCB



MAIN BOARD



KEYPAD



EXTERNAL KEYBOARD



EXTERNAL PRINTER



Fig.2 Block Diagram of CHEM-7 The major blocks of the Chem-7 consists of Main board, thermal printer, external deskjet printer (external printer can also be connected) Photometer, Keypad and liquid crystal display (LCD) and external keyboard can be connected to the analyser. Soft key functions are designed in such a way that it operates with single touch with quick shift from one function to another without going through complex sequential operations. The LCD is a 320x240 dots backlit display with alphanumeric and graphic capabilities with backlit feature which enables the user to read in case of less ambient light. This is most sensitive device to get damaged, which require careful handling, which is interfaced with keypad using a interface card. External keyboard can be connected to the analyser using PS/2 connector provided on the rear of the analyser. Photometer is a device to measure the intensity of the light. Where the absorbance of the radiation from the colored substances are measured by means of photodiode. It can serve 8 different wavelengths. The filter defines the wavelengths. Main board as the name suggest is the heart of the analyser, which controls all the hardware & software functions of the analyser. Refer the details of main board in the operation section. CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 11



CHAPTER 6 FUNCTIONAL DESCRIPTION OF PCB FUNCTIONAL DESCRIPTION As shown in block diagram analyser mainboard is the heart of this analyser. This mainboard gives necessary commands and controls the operation of other peripheral such as Keyboard, LCD, Printer and Photometer. Major blocks are explained below. RTC 12c887 A/D CONVER 5460A EEPROM1 24c512



MUX 4051 89c51 RD2



EEPROM2 24c512



EEPROM3 24C512



TEMP SENSR



ST 10F 168-Q6 RS232



LAMP



PHOTO METER



PELTIER DRIVER



PRINTER



MOTOR



EEPROM



KEYBOARD



WATCHDOG ADM1232



Power supply 5 v /12 v 24 VDC ADAPTER (EXTERNAL)



Fig. 3 Block diagram of mainboard CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 12



MAIN BOARD COMPONENT LAYOUT



POWER SUPPLY SECTION: Instrument can be operated at 90-260 v ac universal power supply with the use of ac to dc adaptor which gives 18 V DC required as input for the internal devices. This instrument uses three power supply sections designed to provide power to electronic circuit, lamp & photometer and the thermal printer. Power Supply It is provided by external adaptor and the adaptor output 18 V is given as input to the analyser. This 24 VDC supply is further converted to +5 V DC, +12 VDC and +5 VDC isolated supply by mainboard power section, and its outputs are + 5 VDC for CMOS microprocessor and logic. + 12VDC for the photometer lamp and cooling fan. + 5VDC isolated supply for photometer and Analog to digital converter. +24VDC to motor directly derived from the mains supply.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 13



SCHEMATIC - POWER SUPPLY SECTION



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 14



Any defect in the section will lead to any of the following problem(s) 1. 2. 3. 4. 5.



Lamp voltage fluctuation Lamp not ON. Printer Not working Backlit of LCD is OFF Analyser is not getting switched ON



Action to be taken 1. Replace mainboard.



CONTROL LOGIC SECTION: The operations for controlling the logics of instrument is performed by this section of the main board. It is provided with ST10F168Q6 microcontroller and 89c51RD2 microcontroller, 64K of EEPROM. Also a timer, a serial interface RS 232C, and a 24 bit parallel interface are present on the card itself. The logic is all in CMOS technology to guarantee low consumption and high reliability. The RTC is provided with inbuilt battery. SCHEMATIC – CONTROL LOGIC Refer on next page. Any defect in the section will lead to any of the following problem(s) 1. 2. 3. 4. 5.



ST10 is not getting programmed. Communication is not taking place between processor and peripheral devices. External printer is not working. External keyboard is not working. Calibration data is not getting stored.



Action to be taken 1. Replace main board.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 15



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 16



CONVERSION OF ANALOG TO DIGITAL SIGNALS This section of the mainboard selects one among different analog signals at a time, such as input voltage, lamp voltage, Vcc and photometer reading etc. converts these signals into digital equivalent number. This number is further processed by controller. The IC5460 performs the control of the measurement operations. It contains a 24-bit A/D converter, the reference voltage, and the necessary I/O ports for communicating with the microcontroller, as well as the serial interface to the outside, and the circuit for the cuvette temperature control. SCHEMATIC – ANALOG TO DIGITAL CONVERSION SECTION Refer on next page Any defect in the section will lead to any of the following problem(s) 1. 89c51RD2 is not getting programmed. 2. In hardware check of analyser not displaying numeric values. 3. Temp. is not sensed or displayed. Action to be taken 1. Replace main board.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 17



SCHEMATIC – ANALOG TO DIGITAL CONVERSION SECTION



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 18



MOTOR CONTROL AND MEMORY This section controls the movement of motor using IC L6208, which is a DMOS Fully Integrated Stepper Motor driver. It features a non-dissipative overcurrent protection on the high side Power MOSFETs and thermal realized in Multipower-BCD technology. It includes a constant off time PWM current controller. When the voltage drop across the sense resistor becomes greater than the voltage at the reference input (VREFA or VREFB) the sense comparator triggers the monostable switching the bridge off. When the monostable times out the bridge will again turn on. To store different types of data, three 64 K bytes IC 24c512 are used. IC U4 is used for chemistry parameters, U5 is for patient reports and values of standards and blank for nonlinear chemistry and U6 is used for quality control data. IC 12c887 is a Real Time Clock plus RAM. The function includes a nonvolatile time of day, calendar. The time of day and memory are maintained even in the absence of power. SCHEMATIC – MOTOR CONTROL AND MEMORY SECTION Refer on the next page Any defect in the section will lead to any of the following problem(s) 1. 2. 3. 4. 5. 6.



Water, standard, solution is not getting aspirated after pressing ASP switch. Motor is not running or not stopping. Chemistry parameters are not stored. Patient reports and values of standard and blank for nonlinear chemistry. Quality Control Data is not stored. Date and time is not correct.



Action to be taken 1. 2. 3. 4. 5.



For defect no. 1 & 2 replace main board. For defect no.3 replace U4. For defect no.4 replace U5. For defect no.5 replace U6. For defect no.6 replace U3.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 19



SCHEMATIC – MOTOR CONTROL AND MEMORY SECTION



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 20



PHOTOMETRIC UNIT: It is one of the major blocks of the instrument & it contains 8 different narrowband optical interference filters of wavelengths 340, 405, 450, 505, 546, 578, 600 & 670 nm for specific chemistry tests. When ray of light is passed through the reaction cell it gets split into different wavelength, which passes through the filter. This filtered light is detected by photodiodes which is amplified and send to the multiplexer CD 4051which selects the one signal and communicates to processor for further processing. COMPONENT LAYOUT



Any defect in the section will lead to any of the following problem(s) 1. Absorbance values not displayed. Action to be taken 1. Check flowcell is clean and scratch free. 2. Replace Photometer PCB. SCHEMATIC – PHOTOMETRIC UNIT JUNCTION PCB: It is the basic interface between the keyboard and CPU PCB assembly for passing the key press signals. It also passes the data to the display assembly. Aspiration switch and thermal printer signals are also conveyed through this PCB. COMPONENT LAYOUT



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 21



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 22



SCHEMATIC - JUNCTION PCB Refer next page.



Any defect in the section will lead to any of the following problem(s) 1. 2. 3. 4.



Keypad is not working. Printer is not working Aspiration switch is not working LCD display is blank.



Action to be taken 1. 2. 3. 4.



For defect 1, check the connector J1 is firmly connected. For defect 2, check the connector J5 and J8 are firmly connected. For defect 3, check the connector J9 is firmly connected. For defect 4, check the connector J3 is firmly connected.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 23



SCHEMATIC – JUNCTION PCB



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 24



INVERTER PCB The basic function of this assembly is providing the backlight to the display. Input voltage to the inverter is +5V dc (+/-0.25V). The output of the inverter is 110 V AC (+/- 0.5 V AC) which is given to back light display. LC filter located near inverter is used to avoid noise generated by inverter. Any defect in the section will lead to any of the following problem(s) 1. No back light / black display.



Action to be taken 1. Replace the inverter PCB.



PRINTER: The 40 column graphic printer, able to give a very high printing quality, high speed and a considerable noiselessness on thermal paper without having to move the printing head. KEYPAD AND DISPLAY SECTION: The liquid crystal graphic with 320 x 240 dots, with alphanumeric and graphic capability. A 20 key membranes keyboard is provided.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 25



CHAPTER 7 TESTING AND CALIBRATION Generally the instrument assemblies are factory adjusted and does not require any fieldtesting, adjustment or settings. It is advisable not to change setting unless necessary. If it is necessary, the testing, adjustment or setting must be carried out by trained and authorized personnel only. TESTING OF SMPS ADAPTER 1. Check the mains power supply .It should be within 90-260 V. 2. Connect one end of 3-pin power cord to the adapter and another to the 3 pin power socket. 3. Check the output of the adapter using a calibrated Multimeter, it should not be less than 17 V DC without load and with load it should be 18.0 – 18.30 V TESTING OF MAINBOARD 1. Give 18 VDC supply at J11 connector and measure voltages at various test points with respect to common ground point using a calibrated Multimeter. Test Point TP1 TP2 TP3 TP4 TP5 TP6 TP7 TP8 TP9 TP10 TP11 TP12



Normal Condition +5V +5V -5V +5 V +5 V +24 V 0V +12 0V



TP details Vcc Vcc to U10 Analog O/p U10 Signal MUX O/p of MUX Vcc analog Vcc printer Vcc Main Input GND + Lamp Voltage AD 590 Analog GND



POWER ON SELF-TEST 1. Switch ON the analyser by pressing the ON/OFF switch provided on the SMPS adapter. 2. On switching ‘ON’ the analyzer, ERBA MANNHEIM logo is displayed and analyser will do self-diagnostic it will automatically check all the important devices and will show the status on display. CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 26



3. If all the hardware tests are OK then the following display appears during the self-diagnostic test. 4. This is routine test will be performed everytime the analyser is switched ON. * * * TRANSASIA BIO-MEDICALS LTD.* * *



CHEM-7 DATE-12/07/04



TIME-12:36



*** HARDWARE CHECK *** LAMP VOLTAGE : OK LOGIC VOLTAGE : OK SMPS VOLTAGE : OK CALIBRATION DATA:OK MEMEORY : OK PHOTOMETER : OK



SELF TEST Press dynamic < SELF TEST > then the LCD display appears as shown below. This key checks the analyzer in “self diagnostic” mode. SELF TEST SOFTWARE VERSION LOGIC +5V LAMP VOLTAGE (11.5V TO 12.0V) SMPS VOLTAGE (22.0V TO 24.0V) FLOWCELL TEMPERATURE PUMP CALIBRATION LOAD PARAMETERS PRE CHANNEL & LOG CHANNEL PRE CHANNEL 340 2000



TEST PRINT



TEST Keys



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



= = = = = =



1.0OCT31 5.1 12.0 23.0 37.0 13300



LOG CHANNEL 340 0002



GO BACK



- 27



SETTING PARAMETERS SYSTEM SETUP The system setup option allows the user to view, edit and print the system date, time and the data output mode. SETTING LAB INFORMATION: The user can enter laboratory information (25 characters each on 5 lines) with external PC AT keyboard. This is stored in the memory. * * * TRANSASIA BIO-MEDICALS LTD.* * *



CHEM - 7 LABORATORY INFORMATION DR.BHUSHAN BADGUJAR HHHHHHHHHHHH GND FLOOR, AMARJOTH, DAWALE NAGAR, THANE (W), THANE PH.NO.9821275788 ANURAG S. KULKARNI



SETTING THE DATE: 1. 2.



The analyzer incorporates a built-in calendar function, which is maintained by battery. Press soft key and the following screen appears as shown below The cursor blinks at the first digit of the ‘Date’ option on the screen. Enter an appropriate data in the following format DAY:



Enter a day from 01 to 31



MONTH:



Enter a month from 01 to 12



YEAR:



The last 2 digits of year (from 00 to 99)



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 28



* * * TRANSASIA BIO-MEDICALS LTD.* * *



CHEM- 7 DATE-12/07/04



SYSTEM SETUP: DATE ENTER DATE IN A FORMAT DD/MM/YY TO SAVE DATE AND RETURN. TO QUIT WITHOUT SAVING.



SAVE



QUIT



3.



After appropriate entry is made, press the dynamic key < SAVE > to save date and return to the System Setup screen or press < QUIT > to quit without saving and return to the System Setup screen. SETTING THE TIME: 1. Choose option ‘2’ from the System Setup screen and the following screen appears * * * TRANSASIA BIO-MEDICALS LTD.* * *



CHEM - 7 TIME-12:41:00



SYETEM SETUP: TIME ENTER TIME IN HH/MM/SS FORMAT AS PER 24 HOURS CLOCK. TO SAVE TIME AND RETURN. TO QUIT WITHOUT SAVING. SAVE



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



QUIT



- 29



2. 3.



4. 5.



The cursor blinks at the first digit of the ‘Time’ option. Enter an appropriate time in the format as stated below: HOUR: Enter an hour from 00 to 23 MINUTE: Enter minutes from 00 to 59 SECONDS: Enter seconds from 00 to 59 Again, a colon ‘:’ separates each entry sign, which appears automatically after the entry of the 2nd digit. After appropriate entry is made, press the dynamic key < SAVE > to save and return to the System Setup screen or press < QUIT > to quit without saving and go back to the System Setup screen.



SETTING THE DATA OUTPUT MODE: 1.



Choose < OUTPUT MODE > on the system Setup screen to set the data output mode:



* * * TRANSASIA BIO-MEDICALS LTD.* * *



CHEM - 7 OUTPUT MODE PRESS TO SELECT OR DESELECT THE FOLLOWING OPTIONS THERMAL PRINTER AUTOPRINT



√



EXTERNAL PRINTER TRANSMISSION THERMAL PRINTER √



EXTERNAL PRINTER KEYBOARD FOR -EXTERNAL KEYBOARD DATA ENTRY YES



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



NO



GO BACK



- 30



ADJUSTMENT AND CALIBRATION ADJUSTING THE OFFSET BY BLOCKING LIGHT 1. Go to the ‘Self test’ menu. 2. Bring the cursor down by pressing ‘DOWN’ arrow key to the PRE CHANNEL and LOG CHANNEL option. 3. Block the light. 4. Press dynamic key ‘F3’ for 5 times. 5. The instrument will take the readings and store the offset automatically. Offset will also be printed on thermal printer. Note: Refer Dynamic keys, from left first key is F1 and second F2 and likewise. ENTERING OFFSET ADJUSTMENT DATA MANUALLY 1. Go to the ‘Self test’ menu. 2. Bring the cursor down by pressing ‘DOWN’ arrow key to the PRE CHANNEL and LOG CHANNEL option. 3. Press dynamic key ‘F1’ for 5 times. 4. Offset adjustment screen will appear. Use UP/DOWN keys to go to different offsets. Enter the offset always in 6 digits. Eg. if offset to be entered is 300, enter it as 000300. 5. Press dynamic key ‘F2’ to save the offsets. 6. Press dynamic key ‘F5’ to print these newly entered offsets. TEMP CALIBRATION ( IN NORMAL CONDITION –WITH PRINTER AND RD2 JUMPERS) 1. Go to self test. 2. Select 37C using keyboard. 3. Check the physical temp using temp indicator (allow it to settle). 4. Check the diff between the physical & displayed temp. 5. Press F2 (Dynamic key ) three times. 6. Enter the required temp ( three digits / fraction part ). 7. Save using F5. 8. Repeat the procedure until the required temp achieved on the indicator (after reset -> selftest) 9. Repeat the same procedure for 30 & 25 (after reset -> selftest) 10.Verify the temp once again after switch off / on the analyser. LAMP VOLTAGE CALIBRATION 1. Go to maintenance menu. 2. Press key sequence 3. A screen will display current Lamp voltage 4. Increase Lamp voltage by pressing key and decrease using key. If the lamp voltage is 12V or above, further increase in voltage is not possible . Similarly if voltage is 11.5V , further decrease in voltage is not possible. 5. Press for self test menu again. CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 31



Note: 1. The lamp voltage can only be calibrated within 11.5V to 12V 2. The voltage changes in steps and one step to change voltage takes minimum 15sec or more



PUMP CALIBRATION This function of the analyzer is used to calibrate the pump for aspirating specific volumes from 200-999 µl. This facility is available in the ‘SELF TEST’ mode of operation. To perform Pump Calibration press the. SELF-TEST and then select PUMP CALIBRATION USING THE DOWN ARROW KEY. Take 1 ml of distilled water in a test tube. Press ‘ASP’ switch to start aspiration and when the last drop is left in the tube, press ‘ASP’ switch again. Now the peristaltic pump is calibrated to aspirate any volume from 200 µl upto 999 µl.



ADJUSTING LCD DISPLAY BRIGHTNESS 1. Open the front cover and rotate preset VR provided on the LCD display PCB as per required brightness.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 32



CHAPTER 8 MAINTENANCE The analyzer is designed for trouble free operation and requires minimum maintenance. For good functioning of the analyzer it is advisable to follow the instructions given below 1.



Handle the analyzer with care and keep it clean.



2.



When not in use, cover the analyzer with the dust cover to avoid accumulation of dust.



3.



Though air conditioning is not a must, it is advisable to keep the analyzer in a dust free, cool atmosphere, away from direct sunlight.



A.



DAILY MAINTENANCE



1.



Wipe off any reagent spills on the analyzer immediately.



2.



After every chemistry run, wash the flowcell thoroughly with good quality distilled water using the “ASP” switch.



3.



Always leave the flowcell filled with distilled water. Never leave any reaction mixture in it.



4.



At the end of each day, aspirate about 5 ml of ERBA wash solution into the flowcell and allow it to remain in the flowcell for 5-10 minutes then wash the flowcell thoroughly with distilled water. Leave the flowcell filled with distilled water.



5.



Empty the waste solution bottle every evening.



CAUTION : 1.



DO NOT USE STRONG ACIDIC OR ALKALINE SOLUTIONS WHICH CAN CAUSE IRREPAIRABLE DAMAGE TO THE ANALYZER.



2.



DO NOT LEAVE THE FLOWCELL DRY. ALWAYS LEAVE IT FILLED WITH DISTILLED WATER DURING THE DAY AND WITH ERBA CLEANING SOLUTION AT NIGHT.



NOTE :



It is advisable to carryout the peristaltic pump calibration every week in order to compensate for the change in elasticity of the tubing.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 33



C.



QUARTERLY MAINTENANCE



Replace the aspiration tubing and peristaltic pump tubing once every THREE months (as explained below) or earlier if it shows signs of wear and tear.



NOTE:



Failure to change the peristaltic pump tubing in time can cause serious errors of aspiration volumes and can also damage the analyzer due to the leakage of corrosive reagents through torn tubings.



Besides the above, certain other simple maintenance operations have to be performed as and when required. These are : - Replacement of the paper roll - Replacement of tubings D.



REPLACEMENT OF TUBING



The replacement has to be carried out once in THREE months, or whenever an alteration in the aspiration volume occurs. Disconnect the tubing from the peristaltic pump if the analyzer is not going to be operated for a few days or longer. a.



ASPIRATION TUBE REPLACEMENT 1.



Open the flap of the cuvette housing.



2.



Gently remove the flow cell from it’s slot.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 34



3.



Unscrew the aspiration tubing from the flow cell.



4. 5.



Slide out the washer and ‘O’ ring of the old aspiration tubing. Discard the old aspiration tubing onto an appropriate location as it is biohazardous. 6. Slide in the washer and ‘O’ ring into the new aspiration tubing. 7. Lock it to the flow cell with the plastic screw available. 8. Place the flow cell back into it’s slot. 9. Pass the end of the aspiration tube through the holder and pull it out so that the length is adequate. 10. Aspirate the distilled water. 11. Close the flap of the cuvette housing. Note:Take care to see the side of the flowcell with the arrow mark is in light path & to your left. & Always leave it filled with distilled water whenever not in use. b.



REPLACEMENT OF PERISTALTIC PUMP TUBINGS



1.



Open the flap of the peristaltic pump by unscrewing the two diagonal thumb screws on the housing as shown below.



2.



Before the old tube is removed, note the exact manner in which it is positioned around the pump.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 35



3.



Release the peristaltic pump tubing.



4.



unlock the bush buttons on each end by pulling it out of the tubing and slide them over.



5. 6.



Detach both the ends of the tubings from the steel connectors. Discard the old tubing onto an appropriate location, as it may be biohazardous. Take new tubing and slide both ends of the tubing over the steel connectors. Lock it with the bush buttons. Position the new tubing around the rotor.



7. 8. 9.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 36



10. 11. 12.



E.



Put the free end into the waste solution bottle. Perform pump calibration with 1 ml distilled water. Close the flap of the peristaltic pump housing.



REPLACEMENT OF LAMP ASSEMBLY 1. Open the flap of the cuvette housing.



2.



Before the old lamp is removed, note the exact manner in which it is positioned.



3



Unscrew the thumbscrew and remove lamp cover.



4 Unscrew the two lamp terminals using (--) screwdriver.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 37



F.



3.



Unscrew the thumbscrew provided on the lamp holder.



4.



Pull out the lamp.



5. 6.



Place a new lamp and connect the lamp terminals and fix thumbscrews. Refit the lamp cover.



REPLACEMENT OF PRINTER PAPER Before starting the instrument make sure that enough printer paper is on the roll. The paper roll is located under the printer cover. To check and/or replacing the paper roll lift off the printer cover. For inserting a new paper roll do as follows



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 38



1.



Lift off the printer cover and take the roll out of the paper roll housing.



2.



Then take a new paper roll and lay down into the paper roll housing.



3.



Release the printer lever by pulling it upward.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 39



4.



Cut the paper in ‘V’ shape and feed this paper tongue into the slot of the paper feeder. Smoother side should face up.



5.



Press PAPER key provided on the keypad to advance the paper.



6.



Close the printer lever by pressing it down and close the printer cover.



!



WARNING: BEFORE REMOVING COVER SWITCH OFF POWER SUPPLY



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 40



CHAPTER 9 TROUBLE SHOOTING GUIDE The following list is an extension of the troubleshooting section outlined in the operator’s manual. The reader should familiarize with the setup, operation and troubleshooting section of the operators manual before attempting to service the unit. In all cases of problem that are not described in this chapter and that cannot be solved by yourself according to the given remedies, it is strongly recommended to contact your technical product specialist. Note: It is very important while diagnosing problem to look at the non-instrumental aspects of troubleshooting. This will save time and efforts for reaching to the correct solution. Please ensure the following before opening the instrument. The Quality of reagents and samples used is good. There are no voltage fluctuations or stabilization problems in mains voltage. There are no pipetting errors. While re-programming new/old tests for instrument, ensure the parameters entered are as per the reagents brands used. There are no environmental problems



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 41



1.



Analyzer is not turning ON POSSIBLE CAUSE a. b. c. d.



2.



No supply voltage Defective adapter Test point voltages are not OK. Loose connection



Check supply voltage Replace adapter Replace main board. Firmly connect the loose connector.



Blank or Black Display POSSIBLE CAUSE a. Loose Connection b. Defective junction PCB c. Defective Display assembly d. Intensity control for display not set



3.



CORRECTIVE ACTION Remove all connectors on main board and junction PCB. Refix all the connections and tighten them. Replace junction PCB Replace display assembly. Adjust display intensity Pot “VR” on display PCB.



No Back Light Effect POSSIBLE CAUSE a. +5 VDC at inverter PCB assembly not present b. Defective inverter PCB Assembly c. Defective main board



4.



CORRECTIVE ACTION Possible loose connection of the connector on main board assembly and inverter assembly. Replace inverter PCB assembly. Replace main board.



Liquid is not aspirated when the “ASP” switch is pressed. POSSIBLE CAUSE a. Peristaltic tube elongated. b. Loosely fitted tubing. c. Loosely fitted flowcell connector. d. Blockage in tubing’s flow cell. d. e. f. g.



“ASP” switch defective Defective motor assembly Defective keyboard assembly Defective main board



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



CORRECTIVE ACTION



CORRECTIVE ACTION Replace peristaltic tube with new one. Tighten the tube joints and flowcell connector. Tighten the flowcell connectors. Check & remove blockage. Replace tubing if blockage is not removed. Replace “ASP” switch. Replace defective motor assembly. Replace keyboard PCB assembly. Replace main board assembly. - 42



5. Liquid is not aspirated when the Dynamic key “WASH” switch is pressed POSSIBLE CAUSE a. Check all the above mentioned points



CORRECTIVE ACTION Check the all above mentioned points.



6. Liquid is aspirated continuously. POSSIBLE CAUSE a. Peristaltic pump not calibrated. b. Adapter output is not OK



CORRECTIVE ACTION Carry out pump calibration Replace adapter.



7. Air bubbles in flowcell. POSSIBLE CAUSE a. Peristaltic pump wrongly calibrated. b. Leakage/cut/pinched flowcell connectors. c. Loosely fitted flowcell connectors. d. Flowcell damaged.



CORRECTIVE ACTION Carry out pump calibration. Replace aspiration tube. Tighten the flowcell connectors. Replace flowcell.



8. Dripping or Leakage from Aspiration tube. POSSIBLE CAUSE a. Peristaltic tube reversed. b. Hole in tubing before peristaltic pump. c. Flowcell damaged



CORRECTIVE ACTION Fix the peristaltic tube in the correct position Replace tubing. Replace flowcell.



9. Erratic results/poorly reproducible results/peaks in graphs POSSIBLE CAUSE a. Inconsistence aspiration of solution. b. Dripping or leakage from aspiration tube. c. Dirty flow cell. d. Air bubbles in flow cell. e. Brownish/Defective lamp assembly. f. Peristaltic tube elongated. g. Lamp voltage fluctuation h. Loosely fitted Photometer Box CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



CORRECTIVE ACTION Replace peristaltic tube assembly and recalibrate peristaltic pump. Refer point 8 as mentioned above. Aspirate ERBA wash and clean flowcell. Refer point no.7 as mentioned above. Replace with new lamp assembly. Replace peristaltic tube assembly. Check and replace power supply PCB assembly. Fix the photometer box properly. - 43



i.



Defective photometer assembly



If the gain is abnormal replace photometer.



10. NO Paper Feed POSSIBLE CAUSE a. Printer lever is open (release position) b. Loose or poor contact c. Defective keypad assembly d. Defective printer assembly



CORRECTIVE ACTION Push the printer lever down to lock paper. Check for any loose connections to printer cables & connectors Replace keypad Replace printer PCB assembly.



11. NO Printout POSSIBLE CAUSE a. b. c. d.



Paper roll is installed reverse way Printer lever is open (released) position Defective Printer PCB assembly. Printer is not selected.



CORRECTIVE ACTION Install paper in right way. Press lever down and lock paper. Replace printer PCB assembly. Select printer option in system setup.



12. Faint printout/some characters missing POSSIBLE CAUSE a. Dirty printer head. b. Defective printer PCB assembly



CORRECTIVE ACTION Clean the printer head with alcohol. Replace with new printer PCB assembly.



13. Continuous Buzzer POSSIBLE CAUSE a. Aspiration switch stuck. b. Printer lever is open.



CORRECTIVE ACTION Release the aspiration switch Close printer lever by pressing it down.



14. External Printer not working POSSIBLE CAUSE a. Printer is not selected in output mode. b. Centronics cable is loose



CORRECTIVE ACTION Select external printer in output mode. Tighten centronics cable.



15. The result printout is accompanied by the warning “RX ABS LIM OVER” in all Chemistries.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 44



POSSIBLE CAUSE a. The initial absorbance of reaction mixture is more than the ABS MIN. value in test parameters.



CORRECTIVE ACTION Check the “RX. ABSLIM.” value has been correctly entered. Prepare fresh reagent and check the value.



16. The result printout is accompanied by the warning “RX ABS LIM UNDER” in all Chemistries. POSSIBLE CAUSE a. The initial absorbance of reaction mixture is less than the ABS MIN. value in test parameters.



CORRECTIVE ACTION Check the “RX. ABSLIM.” value has been correctly entered. Prepare fresh reagent and check the value.



17. The result printout is accompanied by a warning message “HYPERACTIVE SAMPLE!!” POSSIBLE CAUSE a. The change in the absorbance per minute (∆A/min) pf the sample is greater than the value fed as “LIN,LIM” b. Kinetic reaction is still in lag phase. . c. Check if the initial absorbance is OK



CORRECTIVE ACTION Verify the limit set. Amount of enzyme in the measurement solution is very low, dilute the sample and perform the test again. Lamp intensity is low /flow cell is not blocked.



18. All the readings are zero POSSIBLE CAUSE a. The lamp is not ON b. Flowcell is not inserted properly



CORRECTIVE ACTION If lamp is fused replace lamp assembly. Place the flowcell properly in light path.



19. Keypad is locked POSSIBLE CAUSE a. Absorption Switch is pressed



CORRECTIVE ACTION Release ASP switch. Reset the analyser using ON/OFF switch.



20. Date and time is not OK POSSIBLE CAUSE CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



CORRECTIVE ACTION - 45



a. Analyser is not switched ON for more than 3 to 4 weeks.



Set date and time by going through the system setup option. Replace IC U3 i.e. 12c887.



21. Memory/Data storage error POSSIBLE CAUSE a. Chemistry parameters not stored b. Patient report and values for non linear chemistry not stored c. Quality Control Data not stored



CORRECTIVE ACTION Replace U4. Replace U5. Replace U6.



22. Hardware Check shows SMPS Voltage NOK POSSIBLE CAUSE



CORRECTIVE ACTION



a. Power supply is not within 90 -260 V AC range.



do not operate the analyser.



b. Power Adapter defective



Replace power adapter.



23. Hardware Check shows Photometer NOK POSSIBLE CAUSE a. Light path is blocked. b. Flowcell is empty. c. Bubbles in flow cell



CORRECTIVE ACTION Remove obstacle if any in light path. Aspirate distilled water. Remove bubbles by aspirating water.



24. Hardware Check shows Logic voltage not OK POSSIBLE CAUSE a. One or multiple signals on the main board is not OK.



CORRECTIVE ACTION Check voltage at test point TP1 to Tp12. Replace main board.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 46



25. The temperature attained in the flow cell is not within ± 0.1º C of the selected temperature POSSIBLE CAUSE CORRECTIVE ACTION a. Flowcell is not completely inserted. Insert flowcell completely in proper way. b. Refrigerated reagent is used. Bring the temp. of reagent to room temp. and then use it. Replace thermister still persists, replace peltier. 26.During diagnostic check or Run Test if there is any system error, the message appears on the display as SYS ERR S02 / SYS ERR S01 (respectively) POSSIBLE CAUSE a. Power reset.



CORRECTIVE ACTION Switch off the machine and restart. If still the error is displayed, check the jumpers JP6 and JP7 (which are for the ST10 and RD2 communication). If the jumpers are in place, it is possible that they have become loose and not making a proper connection. So replace them with new jumpers. Replace mainboard.



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 47



CHAPTER 10 SPARE PARTS SPARES DETAILS AND ORDERING INFORMATION It is recommended that all the spares and accessories used in or along with the equipment are critical and original supplied by the manufacturer. In case of requirement of these parts for trouble free working of analyser. Kindly mention below details while ordering spares. SPARE



ITEM CODE



ELP72001/R0 MAIN BOARD PCB ASSY



LEAMP000119NEAN



ELP72002/R0 JUNCTION PCB ASSY.



LEAPA000120NEBN



ELP72003/R0 PHOTOMETER PCB ASSY.



LEAPA000121NEBN



ELP62004/R1 DC JACK PCB ASSEMBLY



LEAPA000122NICN



DETECTOR BOX ASSY.



LEMDB000001NIAN



PHOTOMETER BLOCK



RMEOT000784NMBN



DETECTOR LENS HOLDER



RMEOT000788NMAN



PELTIER



RECPT000001NIAN



MOTOR HY200 17130033 AP04



RELMO000003NIA0



LAMP HALOGEN 12V/20W



RECLA000085NIAN



ASP SWITCH (YEL)



RELSW000001NIAN



PAPER CUTTER BLADE



RMEOT000866MMBN



PRINTER FTP-628MCL054



RELPR000018NIAN



PCB PRINTER INTERFACE (FTP-628DSL308) (V270190 003AB)



RECCB000150NIBN



LCD MODULE PG320240FRM-DE4-C



RELLC000005NIAN



POWER CORD 3 PIN 15A 1.5M



RELEA000094NIBN



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 48



WASTE BOTTLE ASSEMBLY



LEAOT000087NIBN



WASTE BOTTLE STAND



RMEOT000929NLBN



ALLEN KEY 3 MM



RMEGI000008NLCN



TEST TUBE HOLDER



RMEHOD00057NLBN



DUST COVER FOR CHEM 7



RMECO000034PMCN



TEST TUBE STAND



RCNGN000003NLCN



POWER ADAPTER (PPS100A-13)



RELPS000007NIBN



JUNCTION PCB ASSY. TO LCD MODULE CABLE ASSY.



RELFC000370NLCN



25PIN 'D' (EXT. PRIN.) TO J5 (MAIN BD.) 20 COND. CABLE ASSY.



RELCW000470NLCN



9PIN 'D' (RS232 COM) TO J4 (MAIN BD.) CABLE ASSY.



RELCW000471NLCN



MAIN BOARD J11 TO DC JACK PCB CABLE ASSY.



RELCW000472NLCN



5264-06 6 pin REL (F) HOUSING. MAKE:- MOLEX.



RECCN000155NLCN



CONN. MOLEX 5264-05 5 PIN (F)



RECCN000197NLCN



MAIN BOARD TO PELTIER PCB CABLE ASSY.



RELCW000473NLCN



DC JACK PCB TO LED CABLE ASSY.



RELCW000366NLCN



EXT. KB. TO J1 MAIN BOARD



RELCW000367NLCN



J3 MAIN BOARD TO J1 JUNCTION PCB CABLE ASSY.



RELFC000371NLCN



DETECTOR BOX TO J8 MAIN BOARD 14 PIN FRC FLAT CABLE ASSY.



RELFC000372NLCN



J2 JUNCTION PCB TO ASP. SW. CABLE ASSY.



RELCW000474NLCN



INCUBATOR CONN. TO DC JACK PCB CABLE ASSY



RELCW000469NLCN



WIRE PVC 7/36 SWG RED



RELWR000016NLCN



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 49



HEAT SHRINK SLEEVE 3 MM



RELWA000017NLCN



LUG 120-SL



RECCN000195NLCN



J16 MAIN BOARD TO LAMP(REMOTE SENSE) CABLE ASSY.



RELCW000475NLCN



CONN. MOLEX 5267-06 6 PIN ST(M)



RECCN000104NLBN



CONN. FRC 50 PIN ST(M) LOCK



RECCN000196NLCN



5267-05 5 PIN REL ST.(M) CONNECTOR



RECCN000115NLCN



CONN. FRC 30 PIN ST(M) LOCK



RECCN000181NLCN



CONN. FRC 20 PIN ST.(M) LOCK



RECCN000053NLBN



CONN. FRC 14 PIN ST.(M) LOCK



RECCN000007NLBN



CONN. MOLEX 5267-04 4 PIN ST.(M)



RECCN000114NLCN



CONN. MOLEX 5267-02 2 PIN ST(M)



RECCN000106NLBN



CONN. MOLEX 5566-02 2 PIN ST(M)



RECCN000184NLCN



CONN. 2 PIN PHOENIX MKDS 3/2 5.08



RECCN000180NLCN



CONN. FRC 16 PIN ST.(M) LOCK



RECCN000008NLBN



CONN. MOLEX 5267-03 3 PIN ST(M)



RECCN000105NLBN



CONN. MOLEX 5566-04 4 PIN ST(M)



RECCN000185NLCN



CONN. MOLEX 5569-2A 2 PIN R/A (M)



RECCN000069NLCN



IC DS12C887 RTC DIP24



RECIC000080NIAN



IC AT24C512-10PI-2.7 DIP8



RECIC000205NIBN



DC JACK CENTRE PIN DIA 2.5MM OD:6.3MM



RECCN000198NLCN



PHOTOCELL VTB8441 B



ROPPS000001NIB0



COOLING FAN 12VDC (80 x 80 x 25)mm AXIAL



RECFA000014NIBN



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 50



LIST OF CONSUMABLES REQUIRED FOR CHEM-7 For a continuous and trouble free working of analyser, it is a recommended to keep certain spare consumables handy. One set of the items mentioned below is also supplied along with the instrument as standard accessories. ITEM LIST -



Peristaltic Pump Tubings Lamp Assembly Printer Paper Roll Aspiration Tubing ERBA Wash kit (4x50)ml Round glass microcuvette Polystyrene rectangular microcuvettes



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



CODE NO. RTBSI000031NIBN LMACH000004NIAN RCNTP000005NLCN RELTB000003NIBN REKT921 RCNGN000002NILCN RLCOT000004NIBN



- 51



CHAPTER 11 ANNEX-1 This annexure consists of 1. Wiring Diagram 2. Component Layout Main board Photometer board Junction board



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 52



WIRING DIAGRAM CHEM-7



CHEM-7 – Service Manual (Rev 1.0 – Feb.05) -



- 53