NB-201 CHEMISTRY ANALYZER SERVICE MANUAL
Contents
1. sss 4 1 4 3 Zero Drift Check ie late een Ee VER 4 2 4 4 Problem Regarding Temperature Control sss 4 3 Chapter 5 Maintenance esssssessssssssseeeeeeeeen enne nnne nennen renes nennen 5 1 5 1 Replacing Common 8 5 5 1 9 121 Replacing Flow GC ell orto ee ai 5 1 5 1 2 Replacing Light Source 8 1 5 3 5 1 3 Replacing Filters 4444444444444RRnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnen 5 3 5 1 4 Replacing Main Board riras rennarar aone Anae oraaa ETE AEEA AEE EEA EA 5 3 5 1 5 Replacing Heating Cooling Device 44ssnennsnsnnennennnennnnnenennnnnn nennen 5 3 9 1 6 Replac ng AD 590 sauna e t i P eo s pe aaiae asenaan aa 5 3 5 2 Daily Maintenant kinint arupana aaa aa pa aa a a daa ka ar Ania Eaa nnns nna 5 3 Chapter O Note ioc a cositas ceca cad Re aaa ara been cade dal 6 1 6 1 Reagents and Sample 4 s snunnnnnennnnnnnnennannnnnnnnnnnnnnnnnnnnnnnnnnnnsnnnnnnranrn nn 6 1 6 2 Aspiration Notes sera 6 6 3 Operation Notes A A tuae bu oa 6 1 6 4 System Notes di o aa e ttt ite ce E D 6 2 Semi auto chemistry Analyzer Service Manual 1 0 1 Cha2. Optical System The optical system consists of a light source chopping wheel filter wheel and its motor flow cell amplifying board and heating cooling device See Figure 2 4 for a picture of the system Semi auto chemistry Analyzer Service Manual 1 0 2 3 Chapter 2 System Description Positioner Filter Amplifying wheel cell board Light Chopping Chopping Filter wheel source wheel motor wheel motor Figure 2 4 Optical System Power supplies of the components Light source 11 5V Filter wheel motor 12V Chopping wheel motor 6V Amplifying board 12V Heating cooling device 8V 2 4 1 Testing Light Source Disconnect the power line of the light source and turn on the NB 201 Find Jumper 11 5V and Jumper LG on the main board and measure the voltage between the two points by a multi meter Adjust switch W201 on the main board until the reading on the multi meter becomes 11 5V Connect the power line of the light source and turn on the light Measure again the voltage between Jumper 11 5V and Jumper LG Check if the multi meter reading is stable and if not adjust again switch W201 to stabilize the reading between 11 5 0 2V thus to ensure proper operation of the light source circuit 2 4 2 Positioning Filter Wheel After replacing the filters access the Zero drift check screen to see if the filter wheel rotates and the 340nm filter is positioned to the center of the optical path If not adjust the
3. WARNING Potential biohazard AN WARNING AAN Avoid contacting with the sample probe Semi auto chemistry Analyzer Service Manual 1 0 V Table of Contents Table of Contents Chapter 1 General eerte a tdt 1 1 1 2 IntroductiOri u see Dens 1 1 5155 6 11 4 1 1 Chapter 2 System Description 2 1 DOMO W Mc rei 2 1 2 2 MAIN BO sss e 2 2 3 LCD and Touch Scree Nosia enean aaa a e eaS E ana aR edea 2 3 2 4 Optical System nete 2 3 2 4 1 Testing Light SOUECO es sanken eid Gained ands 2 4 2 4 2 Positioning Filter Wheel ooononnooncconoconoconononcnonononononononcnonononononnnnnnnncnnnanincninnos 2 4 2 4 3 Amplifying Board 2244444s4snnnnnennnnnnnnnennnnnnnnnnnnnnnnnnnnnnnennnennnenennnnnr nn 2 5 2 0 PIO Patan ia 2 5 A Ep 2 6 Chapter 3 Problem 3 1 34 Problem Analysis ree ads ta ERREGER 3 1 Chapter 4 Troubleshooting 44444404snnnnnnnnnnnnnnnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnn 4 1 4 1 Uristable Results oe tds 4 4 2 Filter Positioning Check absorbance 340 630nmoD
4. filter wheel positioner to eliminate the deviation Then access the 2 4 Semi auto chemistry Analyzer Service Manual 1 0 Chapter 2 System Description Filter Check screen to check the positions of the remaining filters 2 4 3 Amplifying Board Follow the steps given below to replace the amplifying board 1 Turn off the analyzer and disconnect the amplifying board from the main board Adjust switch W102 on the main board to set the voltage between Pin 7 of Chip U105 and Jumper AGND both on the main board within the range of 0 0 02 mv 2 Re connect the amplifying board to the main board Access the Filter Check screen to check the obtained absorbance Adjust switch W103 on the main board to set this value around 0 1 and below 0 200 2 5 Printing Part The printing part consists of a driving part and a thermal printer as Figure 2 5 shows Touch Screen data line Printer data line Printer box Printer control LCD and its control board board Figure 2 5 Positions of Printer and LCD 1 The printer control board is fixed by 4 screws and can be dismounted by removing them The core of the printer is connected to the printer control board by the data line shown in Figure 2 5 Be sure to gently disconnect the data line when dismounting the printer control board 2 The core of the printer is fixed by a screw Semi auto chemistry Analyzer Service Manual 1 0 2 5 Chapter 2 System Description Prin
5. of Flow Cell Pad Side plate Figure 5 2 Top of Flow Cell Pad after Cover Is Removed Unscrew the screw fixing AD590 temperature probe from the bottom of the flow cell Mounting hole of AD590 Silicon grease to be smeared AD590 E inside 5 1 1 1 uniformly on the Figure 5 3 Flow Cell Bottom 2 Installing Flow Cell Clean the surface especially the quartz window of the flow cell with soft paper such as lens paper Uniformly smear silicon grease on the inside of the mounting hole of the temperature probe as Figure 5 4 shows Install the temperature probe and tighten the screw Semi auto chemistry Analyzer Service Manual 1 0 5 1 Chapter 5 Maintenance 5 1 with grease To be faced to light source To be faced to temperature sensor Figure 5 4 Schematic of positions of flow cell inlet and outlet 3 Coat the side of the flow cell to be in full contact with the heating cooling device with silicon grease Press the side plate to the other side of the flow cell and install them together to the flow cell pad Slightly fix the side plate and the flow cell by tuning the fixing screw From the flow cell top press the side plate and the flow cell all the way down to the bottom and completely tighten the fixing screw 4 Place the blind on the flow cell replace the flow cell cover and completely tighten the screw on the cover 5 Insert the inlet hose and outlet hose respectively int
6. the measurement screen be sure to check the parameters method temperature wave length before starting the measurement After entering the measurement screen be sure to finish the measurement and return to the main menu as soon as possible Long time wait may cause the analyzer to stop responding Be sure to re measure and analyze the sample of excessive reaction time Be sure to backup data clean work table and service the analyzer after measuring 6 4 System Notes 1 10 11 12 Be sure the power supply meets the analyzer s power requirements Install a voltage regulator or USP as necessary Otherwise the measurement results may be unstable or the system may not respond Be sure not to expose the analyzer to direct sun Be sure the ambient is well ventilated Cover the analyzer with a dust cover as necessary To prolong the service life of the light source lamp after turning off the lamp be sure to wait at least 10 minutes before turning it on again Otherwise the measurement results may be unstable After turning on the lamp be sure to wait at least 5 minutes before turning it off Do not turn on off the lamp too frequently During measurement be sue the sample probe is inserted to the bottom of the cuvette or tube Otherwise bubbles may be aspirated into the flow cell Be sure not to wait too long at the sub menus Return to the main menu to wait for such operations as inputting assay sheet measurement and inq
7. this warranty is limited to repairing at KAITE s option any part which upon KAITE s examination proves defective THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING WARRANTIES OF MERCHANT ABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE 1 1 1 2 Exemptions KAITE s obligation or liability under this warranty does not include any transportation or other charges or liability for direct indirect or consequential damages or delay resulting from the improper use or application of the product or the substitution upon it of parts or accessories not approved by KAITE or repaired by anyone other than a KAITE authorized representative This warranty shall not extend to any instrument which has been subjected to misuse negligence or accident any instrument from which KAITE s original serial number tag or product identification markings have been altered or removed or any product of any other manufacturer Safety Reliability and Performance KAITE is not responsible for the effects on safety reliability and performance of the NB 201 chemistry analyzer if Assembly operations extensions re adjusts modifications or repairs are carried out by persons other than those authorized by KAITE E Personnel unauthorized by KAITE repairs or modify the instrument Semi auto chemistry Analyzer Service Manual 1 0 I Return Policy Return Procedure In the event that it becomes necessary to
8. Board 2 Seethe table below for the functions and voltages of the jumpers on the board Pin number Function Voltage J101 Supplies power to thermal 5V printer J105 Connects amplifying board 12V J108 Connects touch screen 5V KEYBOARD J201 Supplies power to light source 11 5V J202 AC input Black Black 15V Red Red 8V Green Brown 18V Brown Green 18V Blue Blue 17V J501 Connects motor of chopping 6V wheel J506 Connects inverter 12V J507 Connects fan 12V J601 Connects temperature sensor 12V 2 2 Semi auto chemistry Analyzer Service Manual 1 0 Chapter 2 System Description 2 3 2 4 of flow cell J602 Supplies power to Yellow white 8V heating cooling device White yellow 8V J901 Connects start key 5V J902 Filter wheel positioner Q601 TIP122 Pin C Pin B 10V Q202 TIP142 PinC PinB 4V PRT Connects data line of printer LCD Connects data line of LCD LCD and Touch Screen See Figure 2 3 for a picture of the LCD and the touch screen The LCD is powered by a 20V supply and the touch screen by a 5V Figure 2 3 LCD and Touch Screen The LCD and the touch screen are two separate parts The touch screen is fixed on the LCD Touch screen LCD The LCD is fixed by 4 screws and can be dismounted by removing them Be sure to protect the data line of the touch screen when dismounting the LCD
9. N KAITE BIO MEDICAL ELECTRONICS TECHNOLOGY CO LTD ALL RIGHTS RESERVED Responsibility on the manufacturer party KAITE is responsible for safety reliability and performance of this equipment only in the condition that e all installation expansion change modification and repair of this equipment are Semi auto chemistry Analyzer Service Manual 1 0 l conducted by KAITE qualified personnel e applied electrical appliance is in compliance with relevant National Standards e the instrument is operated under strict observance of this manual AN Note AN This equipment is not intended for family usage This equipment must be operated by skilled trained clinical personnel Warning It is important for the hospital or organization that employs this equipment to carry out a reasonable maintenance schedule Neglect of this may result in machine breakdown or injury of human health Upon request KAITE may provide with compensation necessary circuit diagrams calibration illustration list and other information to help qualified technician to maintain and repair some parts which KAITE may define as user serviceable Il Semi auto chemistry Analyzer Service Manual 1 0 Warranty 1 1 1 1 Workmanship amp Materials KAITE guarantees new equipment other than accessories to be free from defects in workmanship and materials for a period of one year from date of shipment under normal use and service KAITE s obligation under
10. NB 201 CHEMISTRY ANALYZER SERVICE MANUAL Copyright SHENZHEN KAITE BIO MEDICAL ELECTRONICS TECHNOLOGY CO LTD 2005 Statement SHENZHEN KAITE BIO MEDICAL ELECTRONICS TECHNOLOGY CO LTD hereinafter called KAITE owns all rights to this unpublished work and intends to maintain this work as confidential KAITE may also seek to maintain this work as an unpublished copyright This publication is to be used solely for the purposes of reference operation maintenance or repair of KAITE equipment No part of this can be disseminated for other purposes In the event of inadvertent or deliberate publication KAITE intends to enforce its rights to this work under copyright laws as a published work Those having access to this work may not copy use or disclose the information in this work unless expressly authorized by KAITE to do so All information contained in this publication is believed to be correct KAITE shall not be liable for errors contained herein nor for incidental or consequential damages in connection with the furnishing performance or use of this material This publication may refer to information and protected by copyrights or patents and does not convey any license under the patent rights of KAITE nor the rights of others KAITE does not assume any liability arising out of any infringements of patents or other rights of third parties Content of this manual is subject to changes without prior notice PROPERTY OF SHENZHE
11. ater Cover the analyzer after it has cooled down Turn on and off the analyzer as instructed by the operation manual Be sure allthe switches are clean When replacing the components inside the analyzer after opening the casing be sure to clear the inside of dusts and other foreign objects add a dash of oil to the rotating parts check the fixtures and adjust the analyzer to its best performance 5 4 Semi auto chemistry Analyzer Service Manual 1 0 Chapter 6 Notes Chapter 6 Notes 6 1 Reagents and Sample 1 o N WO N 10 11 Be sure to check the reagent s production date and expiration date check whether the reagent is damaged or expired check whether standard and operation instruction is supplied Be sure to read and comprehend the instruction sheet of the reagent and to enter the correct parameters The sample or regent should be formulated as instructed Be sure to prevent pollution during the process Be sure to check whether the sample is expired Be sure to properly adjust the reagent to sample ratio To avoid bubbles be sure to start the measurement immediately after the reagent and the sample are well mixed After taking the sample or the reagent from the refrigerator be sure to start the measurement after its temperature increases to the required value Aspiration Notes Be sure the sample probe s accuracy and smooth Be sure to clean the sample probe of any sticky flu
12. chemistry Analyzer Service Manual 1 0 1 1 Chapter 1 General e Turbidimetry O Linear and non linear standardization PARAMETER SETTINGS Method Wavelength Temperature Reagent blank y n Sample blank y n Delay time Measuring time Reaction type Absorbance limit Aspiration volume Standards Linearity check Unit for results MEMORY e 3000 results TEMPERATURE CONTROL e By means of Peltier elements e 25 30 37 C optional e Precision 0 1 C INPUT e Touch screen DISPLAY e Large LCD PRINTER e Built in thermal printer INTERFACE e RS232 serial port OPREATING ENVIRONMENT e Temperature 15 30 C e Humidity 20 80 POWER REQUIREMENT AC 220V 10 50 60Hz AC 110V 10 50 60Hz 1 2 Semi auto chemistry Analyzer Service Manual 1 0 Chapter 2 System Description Chapter 2 System Description 2 1 Overview Unscrew the13 screws which fix NB 201 casing and place the top casing as Figure 2 1 shows Figure 2 1 Overview of NB 201 inside 1 Power switch 2 Power plug 3 Fan 4 Radiator 5 Peristaltic pump 6 Printer box 7 Top casing 8 Inverter 9 Main board 10 Bottom casing 11 Optical system 12 Transformer 2 2 Main Board 1 The picture of the main board is shown in Figure 2 2 Semi auto chemistry Analyzer Service Manual 1 0 2 1 Chapter 2 System Description 1201 506 507 J101 102 1601 d J202 J501 J901 J902 Figure 2 2 Main
13. e chopping wheel to 400Hz 3 Switch W601 first pull the J602 plug to set the voltage between pin S5 and pin AGND to X 0 3060 x7 note X is the value marked on the AD590 connector Enter the screen of any test requiring the 37 C measurement to check whether the displayed temperature is stabilized between 37 C 0 04 5 1 5 Replacing Heating Cooling Device Be sure the heating cooling device is installed in the right direction with the red line facing yourself Otherwise the heating is done reversely In that case interchanging the blue and whites wires will solve the problem 5 1 6 Replacing AD590 Be sure to add some silicon grease and adjust the W601 5 2 Daily Maintenance Semi auto chemistry Analyzer Service Manual 1 0 5 3 Chapter 5 Maintenance Clean the flow cell in time Clear the end of the inlet tubing of any foreign object Clean the flow cell regularly to prevent increased absorbance caused by dirty flow cell Soak the flow cell with the cleanser for a period no more than 10 minutes and then flush the flow cell with distilled water Check the connectors of the flow system regularly Clean the peristaltic pump and its hose If the analyzer is not to be used for a long time first empty the tubing and then loose the pump hose Frequently clear the place around and the bottom of the analyzer of water dust and foreign objects Fill the flow cell full with water and immerse the entry of the inlet hose into the w
14. e in this mode entered the system 2 Reagents are expired problem Possible problem with with standard adum problem Oprobl The new K value sangar bn obtained in problem M f 5 e f No analysis with standard aspiration standardization is less irati than the old one S bubbles with aspiration Semi auto chemistry Analyzer Service Manual 1 0 3 1 Chapter 3 Problem Analysis The new K value obtained in problem a x problem standardization is with onii with standard reater than the old one 6 9 No analysis standard problem problem problem ith with f aspiration with bubbles aspiration aspiration Problems with Possible problems with 7 QC results exceeds the D controls controls target 2 aspiration 2 aspiration S parameter settings value of K bubbles bubbles D bubbles problem problem problem When measuring the i i with sample i i with Expired win Expired nn p analyzer gives alarm for aspiration reagents aspiration reagents sspiation too small absorbance problem problem with sample with sample incorrect e reaction time 2 bilbHlos bubbles During measurement problem O problem Expired 9 the analyzer gives alarm Expired uod Expired with reagents for too large reagents s P and reagents aspiratio absorbance operatio ane h operation D bubbles m Negative concentration D wrong parameter s
15. ettings bubbles amp problem problem value is obtained with the analyzer with the analyzer Concentration exceeds Dproblem with sample 2 problem with aspiration and operation reference value bubbles excessive reaction time 12 Concentration exceeds sample needs to be diluted 2 inappropriate aspiration and analysis range operation 8 bubbles 13 Concentration exceeds sample needs to be diluted 2 inappropriate aspiration and absorbance limit operation 8 problem with analyzer No aspiration or too small aspiration too small aspiration volume flow cell or tubing blocked or leaking Concentration or curve not displayed Dmeasurement not finished yet analyzer not respondin 14 Other problems y y P 9 Analyzer does not respond to touch screen operations test not finished yet analyzer not responding Cannot access measurement menu ylast wrong temperature setting or still heating program busy or in chaos 3 analyzer not responding 3 2 Semi auto chemistry Analyzer Service Manual 1 0 Chapter 4 Troubleshooting Chapter 4 Troubleshooting 4 1 Unstable Results Check the following items if unstable results are observed 1 Check whether the analyzer is powered by the demanded voltage whether the analyzer is properly grounded whether source of interference is present 2 Check whether the absorbance of the flow cel
16. id Be sure to well mix the sample or standard at the bottom of the cuvette Be sure to clean the scale in time and observe the scale at an appropriate angle Operation Notes Be sure not to measure when the reaction time is too long or too short Be sure not to measure when the sample and the reagent is not completely mixed or when bubbles are present during mixing Be sure to present the cuvette or tube to the sample probe at an appropriate angle for aspiration Otherwise bubbles may enter the flow cell Enter proper menu to aspirate the corresponding reagents Be sure not mix samples or sample IDs Be sure to observe the absorbance indication in the Zero mode Do not proceed with standardization or measurement when bubbles are present in the flow cell Be sure to perform reagent blank check regularly Proceed with standardization or measurement only after you are sure the regent is not expired or polluted For the end point reagent blank check must be done before standardization or measuring Be sure to check the sample first For special samples sample blank check must be done before measuring Be sure to check the new K against the old after standardization After a test rinse the system before proceeding to the next one Semi auto chemistry Analyzer Service Manual 1 0 6 1 Chapter 6 Notes 12 13 14 15 16 When finding bubbles be sure to rinse the system before measurement After entering
17. istry Analyzer Service Manual 1 0 To be coated silicon Chapter 5 Maintenance 0 050 0 200 Before installing the temperature probe AD590 be sure to first lead the probe through this hole Figure 5 5 Flow Cell Pad bottom 5 1 2 Replacing Light Source Lamp After the replacement of the light source lamp it is usually necessary to adjust the optical path clean the bubble of the lamp and tighten the fixing screw Adjust switch W201 to set the power supply to the lamp at11 5V Clean the flow cell repeatedly to make sure no bubbles exist Align the light spot first horizontally left and right then vertically up and down to the center of the 340nm filter 007 If the filament is too high insert some gaskets under the bottom of the radiator If the filament is too low file the lamp bottom or the radiator bottom accordingly Adjusting the radiator lamp moving the flow cell forth and back or moving the photoelectrical PCB up and down can minimize the absorbance which can then be adjusted as required by tuning switch W101 5 1 3 Replacing Filters Use tweezers to replace the filters Be sure the filters are not covered by dusts or water In case of absorbance fluctuation after the replacement adjust or replace the corresponding attenuation filters 5 1 4 Replacing Main Board After the replacement adjust 1 Switch W201 to set the light source voltage to 11 5V 2 Switch W501 to set the rotation rate of th
18. l increases and whether the aspiration volume decreases Check against the table below to solve problems regarding the flow cell Problem Cause Solution Flow cell is dirty Cleaning not frequent enough or Soaking the flow cell not thorough enough with cleanser Flow cell leaks Bad flow cell quality or poor Replacing the flow maintenance cell Flow cell is clogged Serums not good enough or Soaking cleaning not frequent enough pressurized washing Flow cell s capability to Aged pump hose causing slow Replacing pump exclude bubbles flow and pollution hose decrease Table 4 1 Flow Cell Problems 3 Check the tubing to see if any of the following problems exists A Aged pump hose clogged hole of the pump hose adaptor sticky pump hose Cloud noise B Leaking or broken tubing C Sampling probe broken bended or staved replacement demanded 4 contacts in the circuitry 4 2 Filter Positioning CheckCabsorbance at 340 630nm Check against the table below for problems regarding filter positioning Semi auto chemistry Analyzer Service Manual 1 0 4 1 Chapter 4 Troubleshooting Problem Cause Solution Absorbance of certain filter increases Filter covered by mildew dust or other foreign objects Cleaning or replacing the filter For All Filters Problem regarding light source Aged lamp excessive service time decreased illumination fog in lamp or damaged lam
19. nappropriately f W101 Optical adjusted path Increased Optical path changed Lamp Adjusting the optical path replaced Flow cell inappropriatel P Pelee y recommended Table 4 2 Failure of Filter Positioning Check 4 3 Zero Drift Check Failure of the check may result from the following factors 1 Fluctuating power supply and or interference 5 2 Semi auto chemistry Analyzer Service Manual 1 0 4 4 2 3 Chapter 4 Troubleshooting Distilled water of poor quality Aged light source lamp power supply of the lamp below lt 11 00V and or loose connection of lamp plug 4 5 6 7 340nm filter aged or covered by dusts or mildew Flow cell dirty leaking or difficult to exclude bubbles Degraded ambient conditions Refer to section 4 2 for other factors Problem Regarding Temperature Control Excessive reaction time may result from the following factors 1 Too high ambient temperature and or poor ventilation 2 Exhaust fan not working Semi auto chemistry Analyzer Service Manual 1 0 4 3 Chapter 5 Maintenance Chapter 5 Maintenance 5 1 Replacing Common Parts 5 1 1 Replacing Flow Cell 5 1 1 1 Dismounting existing flow cell 3 1 Disconnect the inlet and outlet hoses from the flow cell Remove the flow cell cover and the shield cover beneath it 2 Unscrew the fixing screws of the flow cell and take it out Fixing screw Bottom plate Figure 5 1 Top
20. o the inlet and outlet of the flow cell 1 3 Note 1 Be sure to install the flow cell in the right direction If reversed the flow cell will have difficulty to exclude bubbles 2 Be sure to smear silicon grease sufficiently and uniformly on the specified places Otherwise the temperature of the flow cell cannot be properly controlled Be sure to keep the surface of the quartz window and that of the photo cells free of silicon grease 3 When removing the inlet or outlet hose be sure to firmly grasp the bottom of the hose and then pull it upward Don t try to pull the hose by grasping its top otherwise the hose may be deformed or broken It is also feasible to use tweezers to pry the hose from its bottom 4 When inserting the inlet or outlet hose be sure to focus your strength in the vertical direction to insert the hose into the inlet or outlet by 3mm Should your strength be dispersed or inclined the inside of the hose may be scratched and the particles resulting from the scratch may block the flow cell If the hose is seriously damaged by this reckless maneuver gas leakage will arise during the operation of the analyzer 5 Before installing the temperature probe AD590 be sure to first lead the probe through the hole shown in Figure 5 5 6 After the replacement of the flow cell the filter check may find the absorbance changed Adjust rheostatW101 o set the each filter absorbance in the range of 5 2 Semi auto chem
21. or waste If possible disinfect the analyzer everyday 14 The user is obligated to discharge the waste in compliance with the national or local regulations Semi auto chemistry Analyzer Service Manual 1 0 6 3 Appendix Circuit Diagram it Diagram Ircul Appendix C Halogen Lamp Flow cell amp photo receiver Peltier EI Peristaltic Pump Motor I Filter Wheel Motor Recorder print head 4 Chopping 4 wheel motor 18V v Lamp control circuit u201 q201 12V 5V s id Y v 2 5V Signal amplify circuit gt A D A U001 107 108 109 U105 12V 10V Y 2 5V TEMP Control cicuit U601 602 0601 602 12V v Motor drive circuit U504 i 12V v Motor drive circuit U504 Recorder drive board PRG 1N SV Y Y Y Chopping wheel Buzzle drive motor circuit EJ circuit Q101 U503 Buzzle 12V CPU U301 C8051F020 y y RS232 Output circuit U110 Y RS232 Interface 5V AC220V v Power Circuit vvvvvvvv 5V 12V 20V 18V 5V 12V 3 3V 10V 5V 2 5V RTC Module U104 2 5V Reference power source 5V 12V vov Y Touch Screen Invertor drive circuit U111 v12 20V Y Y w wx Touch Screen TFT screen TB234 M 320240 Semi auto chemistry Analyzer Service Manual 1 0
22. p Replacing the lamp Problems regarding Lamp voltage 11 5V 1 Lamp voltage keeps increasing and adjusting switch W201 does not work Lamp voltage is unstable which may be caused by fluctuating power supply voltage 2 Lamp voltage below11 0V 3 No lamp voltage which may be caused by the broken fuse fuse 723 drops 1 Replacing TIP142 and 723 2 Adding a stabilizer and adjusting switch W201 to set the voltage at 11 5V 3 Replacing the fuse Problem regarding chopping wheel 1 Rotation frequency is less than 350HZ or greater than 430HZ 2 Chopping wheel does not rotate or becomes disconnected Cabsorbance gt 3 0 1 Adjusting switch W301 to 400HZ 2 Replacing the chopping wheel F8 Small absorbance Polluted flow cell Cleaning flow cell change Large Leakage blockage difficulty to Checking cleaning or absorbance exclude bubbles replacing the flow cell Flow change Cabsorbance gt 0 7 l veh DO Disconnected window or leakage Replacing the window aspiration High absorbance Flow cell polluted light source Soaking the flow cell for of filters 340 lamp aged temporary use and 405 Negative absorbance PCB U107 109 damaged Replacing U107 109 Negative absorbance F8 positive TIP142 damaged Too high voltage for light source lamp Replacing TIP 142 Decreased Optical path changed Lamp Adjusting the optical path or replaced Flow cell i
23. pter 1 General Chapter 1 General 1 2 Introduction The NB 201 semi auto chemistry analyzer is a stable and precise laboratory instrument It features multiple analysis methods end point kinetic fixed time and absorbance Linear and non linear standardization Touch screen and large LCD Measurement precision of 0 0001ABS and calculation precision of 0 00001ABS Anti vibration and anti disturbance optical system that guarantees highly accurate and reliable results Display of reaction curve Lamp saving feature that prolongs lamp life largely Comprehensive quality control program Levey Jenning graphics included Audible visual alarm Built in high speed thermal printer Open reagent 1 3 Specifications LIGHT SOURCE Quartz halogen lamp 12V 20W WAVELENGTH RANGE Automatic by 8 position filter wheel 7 standard filters 340 405 492 510 546 578 630nm 1 position free for optional filter Half bandwidth lt 8nm Stray light lt 1 0 340 nm PHOTOMETRIC RANGE 0 0000 to 3 0000 ABS Resolution 0 0001 ABS Drift 0 002 A hour FLOWCELL Stainless steel body with quartz window Measuring volume 32 uL Aspiration volume programmable 200 2000 uL Optical path 10mm ANALYSIS METHOD End point with or without reagent blank End point with sample blank and with or without reagent blank Kinetic with or without linearity check Kinetic and fixed time with or without reagent blank Absorbance Semi auto
24. return a unit to KAITE the following procedure should be followed 1 Obtain return authorization Contact the KAITE Service Department and obtain a Customer Service Authorization KAITE number The KAITE number must appear on the outside of the shipping container Return shipments will not be accepted if the KAITE number is not clearly visible Please provide the model number serial number and a brief description of the reason for return 2 Freight policy The customer is responsible for freight charges when equipment is shipped to KAITE for service this includes customs charges Company Contact Address Floor 7 Building 1 Beishan Industry Zone Beishan Road Yantian Shenzhen P R China Phone 86 755 25365148 Fax 86 755 25273543 IV Semi auto chemistry Analyzer Service Manual 1 0 Safety Caution Warnings Cautions and Notes Warnings cautions and notes are used in this manual to alert or signal the reader to specific information A WARNING Warning alerts the user to the possible injury or death associated with the use or misuse of the instrument CAUTION Caution alerts the user to possible injury or problems with the instrument associated with its use or problem such as instrument malfunction instrument failure damage to the instrument NOTE 4 Note provides specific information in the form of recommendations pre requirements alternative goods or supplemental information
25. ter cover Paper cabinet Press bar Figure 2 6 Front View of Printer 2 6 Motors 1 Peristaltic pump motor powered by a 12v supply See Figure 2 7 Figure 2 7 Position of Peristaltic Pump Motor 2 Filter wheel motor powered by a 12V supply 2 6 Semi auto chemistry Analyzer Service Manual 1 0 Chapter 2 System Description Filter wheel Filter wheel motor J Figure 2 8 Filter Wheel Motor Semi auto chemistry Analyzer Service Manual 1 0 2 7 Chapter 3 Problem Analysis 3 1 Problem Analysis Chapter 3 Problem Analysis Analysis Problem Kinetic Fixed Time End Point Item Positive Negative Positive Negative reaction reaction reaction Cr reaction BUN Absorbance obtained in It implies the Zero mode is less 4 bubbles were present during the filter check than that in the Filter Check mode 2 absorbance dropped after flow cell cleaning Absorbance obtained in the Zero mode is It implies 2 bubbles entered the flow cell greater than that in the Filter Check mode the flow cell is dirty and needs cleaning In the reagent blank It implies the mode the analyzer existing 3 gyes alarm 10010 Reagent blank mode is not applicable in this mode bubbles are absorbance 1 being excluded In the reagent blank It implies mode the analyzer D bubbles gives alarm for too low 4 absorbance Reagent blank mode is not applicabl
26. uires Particularly when entering the measurement after heating long time wait will lead to command error and system not responding Changing assay sheet after the measurement is over or partially over may lead to data loss Be sure to record the data before making changes For the multipoint standardization be sure to enter 0 1 or 0 001 as opposed to 0 for the first standard concentration Otherwise the analyzer cannot be standardized In case the standard of O concentration is needed agent blanking will do Be sure to check filter positioning after daily startup Check the positioning every week will help prevent bubbles from entering the flow cell After every test be sure to rinse the flow cell with distilled water best with dedicated washing reagent Fill the flow cell full with water after using the analyzer In case the analyzer is not to be used for a long time be sure to empty the flow cell and loose the pump hose Be sure to check the aspiration volume every week or regularly When changing reagents or using reagents of other types be sure to do the reagent blank check re calibrate the analyzer or adjust the K value Be sure to watch the aspiration volume during the aspirating process Re aspirate if too much was aspirated Be sure to always clean the probe after 6 2 Semi auto chemistry Analyzer Service Manual 1 0 Chapter 6 Notes every aspiration 13 Be sure to protect the operator from the sample reagents
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