Maintenance and Repair Manual
Contents
1. Light filter selection and control essent 16 244 Liquid absorbing controlof DUPD ade sss iii 16 2 4 9 Jemper ature LESTE GN CONITON ie e tee a ete eti uU e tds 17 2 4 6 Light energy sampling and conversion sce et eate tt D tq 17 2 4 7 Halogen tungsten lamp CON OL esie qeu Eam Ie qu 17 2 5 P PEU NE FUNCTI GNCEESCRUPTECN ci 322 bh Sot RE DRE 18 DDE UIUC ELON Ws TIEN OV iera RE S Eumenis eh 18 PRO ROS oat OFAN I IAAL LL ser ola LUE OLI D ER DUE Pee eee ee eee 18 2 6 LIGHT PATH FUNCT CN DESCRIPTION o een 18 2 O T UIUC TI onI INTIS ET DIONE wesc te ou tempe tat aU S E tU EE 18 DO 2 DOMESTICO tias 19 CHAPTER 3 FITTINGS REPLACEMENT 20 3 1 NSTRUVENT DsMNIINS METHOD eee 20 3 2 Law REPLAEMNTI lesen HH HH Hmmm 22 3 3 POER SWTCH REPLACEMENT essen Rn 23 3 4 LIGHT FILTER REPLACEMENT seen nnn n HH 24 3 5 CHANGE SI GWL RECEIVER cece ans 26 3 6 PIPELINE QANE occ HH ea 28 CHAPTER 4 DAILY MAINTENANCE t 3 4 GENERAL NRAN ON 0c HH 31 4 2 CLEAN INSTRUMENT ooo ccc RR rn 31 4 2 1 Clean outer surface of Instrument ER EUREN RS URNAM E pei N AREE 3 ADs Cle LOW COIL A ME 3 CHAPTER 5 COMMON MALFUNCTION LIST 33 Chapter 1 Instrument Overview e RTI 1904C is an internet oriented chemistry analyzer it can be used in the measurement of the following matters Electrolytes Substrates Enzymes Plasma proteins Hormones TDA S e Itcan pro2. The structure of light source lamp is as the drawing fix screw Its function is to fix the lamp on light path LIE E adjustment screws Its function is to micro adjust the location of lamp in order to adjust the intensity of light power source line for lamp It can supply power for the lamp 1 Turn off the machine open the inner cover pull out power source line of lamp unscrew the bolt take out the light source lamp 2 Place a new lamp on the light source seat screw the bolt but do not screw it too firm connect the lamp power source line 3 Screw the bolts but do not screw it too firm Open the machine and enter the main menu select ABS option after entry set wavelength as 340nm and num of point s240 absorb distilled water to test LL m 1j LES Li T ALE LE n E a O b ww p as las maa P i mull 3 a o EL E FAIL Jg numum P z o T ma m T E E F ra m x i zm m 15 E E ME nenas E ALERT o n a m m u T Ai d S uer p m AE m E LF L LI za L zm EJ E LESZ MET E LI V EE gu EH E am ith D BEL l oo E ETEL i ala mxs mu Pura TA A d 9 90 7 i 1 a ma E md mm gS a P gt T f b Io ca ee Ip ras Te Jg 22 gt 6 Ja Move frontwards and backwards the location of the lamp to maximize the tested AD value value in
3. control fails The pump do not rotate give out noise and do not absorb liquid It is reported that please check whether the filter wheel 1s in normal operation Appear 4095 the report can not be printed The analyzer can not starts The printer cannot start 34 The small drop out line old machine is damaged replace it Check chip of main board 7709 FLASH chip 9735chipl Replace the damaged ones Check whether the FLASH chip on the main board is damaged replace it if there is any LCD display line is in poor contact pull out or re plug in or use glue old machine Check whether the FLASH ROM chip on mainboard is damage Change it if there is any In front board J11 J8plug has poor contact pull out and replace it U10 is invalid welding or damaged re welding or replace it The peltier is damaged it shall be 4 ohm in empty load change it The pump value and receiver plate value doesn t adjusted after upgrading Re enter the pump value and receiver plate value Check the 4M crystal vibration on front board is damaged change it if there is any damage The sleeve of light sensor of receiver end newly replace is too long use scissors to shear it Check if the positioning light coupling is damaged replace the positioning light coupling Check whether the L297 L298 5804LB on the front board is damaged or not change it if there is any Newly replaced filter add attenuation p
4. key at test state the instrument can automatically absorb the samples into the flowcell LCD display Display colorful words or diagrams Keyboard Some common hot key The printing and cleaning etc can be performed only by one press of the key by operator Right and left key It is used together with mouse Please refer to the operation of mouse 221 RT 1904C Biochemistry Analyzer User s Book Mouse It can be used with mouse Please refer to the operation of mouse 221 RT 1904Biochemistry Analyzer User s Book LED lamp When the instrument is powered the LED lamp is on printer cover Open the cover the built in printing paper can be placed 1 2 2 Key Board ORE NE PAPER RINSE PRINT e CS NN 4 LAMP LEFT RIGHT ENTER Diagram 1 4 Key Board 1 key of soft key board A Push the key to open the soft key board Push this key again to close the soft key board start or stop cleaning flowcell of the instrument E 20 A Rinse key 3U Print key Push this key to start printing immediately it is PRINT intended for built in printer and invalid for external printer L Al Paper feeding key Push the key to feed paper into the printer it is intended for built in printer and invalid for external printer Switch on or off the lamp lamp switch key SU 6 Left key In the display menu push the key to move leftward 71 el Right key Push the key to move rightwar
5. simulation telephone line port one 640X 480 CRT display port one 640 240 LCD display port 13 2 3 2Main board function diagram Frame CRT Memory Interface HD64461 TTL level 232 port KeyPad Interface SH7709 Socket Modem TL16C552 Amplifier XT compatible keyboard Interface Inside serial port printer interface Parallel Inside printer Mouse mae Display Phone Interface Speak Interface interface interface Diagram 2 1 Main board function diagram 2 3 3 Main board principle description As indicated in the above diagram the main board is consists of the following major part 1 SH7709 Flash Memory and DRAM constitute the basic platform of system operation the 2 31 14 system software and application software 1s fixed in the Flash Memory The address space of Flash Memory is distributed in the O district of system storage area The address space of DRAM is distributed in the lower 32M space of 3 district of system storage area The outer frequency of CPU is 20MHz When the system starts the program is directly executed on Flash Memory the start area program on Flash Memory can complete upgrading of software HD64461 Frame Memory constitute the outer controller of the system that mainly used in support CRT and LCD display The address space of Frame Memo
6. test 2 4 6 Light energy sampling and conversion The sampling test of light energy is the core of semi automatic biochemical analyzer All the test and calculation of semi automatic biochemical analyzer are performed through test on light intensity Therefore the light energy sampling shall be precise and stable so that the requirement of instruments on sampling test speed can be satisfied The photoelectric sensor OPT301M of B B Company is adopted The component integrates the silicon photovoltaic cell and embedded calculation amplifier The silicon photovoltaic cell transfers the photocurrent signal into low voltage signal The embedded calculation amplifier amplifies the low voltage so as to satisfy the measurement requirement of voltage OPT301M has the strong point of high integration and fine performance at the same time only by transferring the voltage signal into digital amount to CPU can it start processing So A D transfer circuit shall be added ADS774 of B B company is adopted as A D converter its main indexes are 12Bit All can satisfy requirements of instrument on measuring range precision and speed The voltage range of input A D 1s 0 10V 2 4 7 Halogen tungsten lamp control To lengthen the service life of the lamp the instrument shall automatically shut the lamp if instrument does not measure after being on for a long time The lamp used by the instrument is halogen tungsten lamp Its specification 1s 6V 10W Both the current p
7. the small bracket e g 3000 Adjust bolts notice that the movement of will lead to reverse effect to the AD value Find out the right bolt which enable the tested AD value to about 3000 1600 3000 also permissible and then fasten it Fasten bolt and place the cover of the lamp 3 3 Power Switch Replacement 23 Turn off the machine unscrew the bolts on base of instrument take out the upper cover of instrument Pull out plugs U U diagram 1 Press firmly the flip plate on both end of switch push outwards the entire switch seat and remove the switch seat diagram 1 Pull out tie in of power source line with switch Press firmly the flip plate and push outwards the switch diagram 1 Take a fine quality switch the I on the switch faces the power source line socket press in the switch Connect the tie in of power source line and switch diagram 1 Press the switch socket outwards into the base of instrument diagrram 2 he power source line socket shall face the fan diagram 2 Connected power source line U U U diagram 1 Place the upper cover firmly screw bolts Open the machine note that various connection line do not press on the bolt port to prevent damage of connection line Diagram 1 L L L Diagram 2 0 A Power source line socket fan 3 4 Light Filter Replacement 1 Open the upper cover of RT 1
8. 9 3 Take out the pump tube tear the belt then the pump tube can be removed from the white cuff belt White cuff 4 Replace a new pump tube tie the belt operate reservedly so that the replacement can be completed At last adjustment firmness with adjustment screw 30 Chapter4 Daily Maintenance 4 1 General Introduction RT 1904C is a clinic precision analyzer To keep the instrument in a fine state daily maintenance shall be performed The maintenance of RT 1904C is very simple but it shall be done earnestly and carefully 4 2 Clean instrument 4 2 1 Clean outer surface of instrument Keep clean the working environment of instrument Neutral detergent and wet cloth wiping are needed in cleaning the surface of equipment Use soft cloth to clean the liquid crystal display Warning Do not let any solvent grease or eroded matter to contact the instrument 4 2 2 Clean flowcell The clean of flowcell shall be kept so as to ensure the accuracy and reliability of test results 1 Outer flowcell clean al According to the requirement to place flowcell refer to1 1 7 bL If the outer flowcell is polluted take a soft cloth soaked with water to clean it softly 2 Inside flowcell clean a Put vessel with distilled water under the aspirate tube push RINSE key to start continuous cleaning function Push RINSE key again to stop cleaning Generally the cleaning takes half a minute b The detergent of glass
9. 904C beware of the connection lines between upper cover and main board 2 Unscrew the fix bolt of light filter cassette i p F Filter cassette Fix screw 24 3 As indicated in the drawing draw out anti dazzling screen at the same time unscrew3 screws on the filter wheel TFT reug Unscrew the fix screw 25 6 The taken out filter wheel is as the drawings fix copper ring Gap Mh 7 Filter with various wavelengths is show in the drawing The gap related wavelength is 340nm the wavelength 340nm 670n mare arranged clockwise 8 Carefully take out fixing copper ring take out used light filter out copper ri Take out used filter 9 Replace new filter with related wavelength fix it with cooper ring And the replacement is completed p 10L Reverse the above dismantling procedure then the filter can be place in the anti dazzling screen cassette 3 5 Change Signal Receiver The function of signal receiver is to change the varying light signal into the electric signal and then calculated and process It is the most important component in the light path system The change method is as follows 26 1 After remove upper cover of RT 1904CT the signal receiving cassette can be seen left side the step motor Casstte 2 Unscrew screws remove the cassette the signal receiver plate can be seen White mat signal receiver p
10. RT 1904C Chemistry Analyzer Maintenance and Repair Manual A ayto Copyright Rayto L L C Rayto Electronics Inc RevA 1 Table of Contents CHAPTER 1 INSTRUMENT OVERVIEW 4 ld INSTALAN said pd feles ers dickens qox feles xia dox feb pel 4 Id lUnpackng or the ANSIPUMEONE aisi ESFERA EIN SEINS 4 hd SClLECE proper MOUNTING OCTO asia itio a a At A 5 LRS Power source reguiremneni erae aa AA AN AAA 5 1 1 4 Connect the instrument to the power source sss tenens D TAL Connect LOINC external PTO T S e Oe pu dq RM DN MM quM 6 1 1 6 Adjust the display to a appropriate position 6 T Pace TIoWOOlL ua mmn IN MEME E AE MM MED 6 1 2 SINEIUE o ctii usd mem Spei uM TE m atn 8 LP VOUT VOW nate tumet CRM IM II LIED DI MALLA I UE 8 T C V OUO i tocar tite uices abusu Iac ME LEM IL LC E 9 T0 DOO Go eee en een ce oc Dec MI Dd 10 R2 VOW CCU M Casta bois 10 1 3 NSTREMENT PARAMETER o ness tek re RE RMPERUR RM EE 12 CHAPTER2 FUNCTION DESCRIPTION 13 2 1 RISE FUNGI CN FRAME riores 13 2 2 DESCR PTI QN CF POER SOURCE FUNCTION ww eee 13 2 3 MAN BOARD FUNCTION DESCRI PL ON sss 13 23 Main board FUNCTION HUSTA OM S e ORE D RP Mae es 13 Z2 MOD DOO FUNCTION dag FH ios 14 LID Ma DOAFU DEIRCIDIC des CR DON ANDAS ttes ts E 14 2 4 FRONT BOARD FUNCTION DESCR PTI ON oauan 15 2 4 1 Front board function illustration sese 15 2 4 2 T TON DOUG PINCE TANG ei SEE a 16 2 4 3
11. The pump tube may need to replace Check the valid period of the reagent Check whether the setting is right or not and whether parameter revision is needed Ensure the quality control cannot be polluted Re measure with another method Check the flowcell use another reagent and re measure Check whether standard material is absorbed correctly Please exit the standard setting procedure and enter reset the standard The normal work temperature range is 15 C 32 C Note If unsolvable error is found during the operation process or re appear of certain error please contact the supplier Chapter 6 Common Fittings List 35 36 idcm SS ra orf mames fe wr o E filter 500nm hires ler ei o Tig ster sm aa Ws 0 Tiem siers ra 6 0 imer imo 0r o0 6 W mosen mesen UP we o Main board ICE Sisal esving asenbiy no ws Power upper cores Ja eo 0 wrwe a e 0 Powersa 2o 0e 0 wem am jw e Main board keyboard plas E ws 9 Power switch win soeg iza fon fo FLASH RO o or 0 tevas mg os 0 epi ph ws o NOIRES inverter 1212 Trough light coupling 1190 004 Flowcell two tube diameters 1212 BT Main board battery ignal receiver Cover Power complete machine Power PCBA plate Power upper cover ont board Main board Flash Rom Power Switch assembly LCD Display cable Main cable Voltage inverter Trough light ou
12. Transfer amplify and sampling of light and electric signals O Temperature test and control 2 4 2 Front board principle frame The front board principle frame is as follows 1904C semi automatic bio chemical analyzer front end plate principle frame Location Detection Filter circuit L_ pn E i25 ne v Filter step motor ogic control a Lis oi _ Drive circuit d p A LI os F E logic control Peristaltic pump motor 2 Tes H 8 i Peristaltic pump 5 id Step motor E Peltier temperature control Peltier Temperature test Halogen tungsten Bus connected with back end plate Halogen tungsten lamp logic control fh E li Lamp Data Ber et A D conversion Photoelectric receiving and conversion circuit Fig 2 2 Front board function diagram 2 4 3 Light filter selection and control In the semi automatic biochemical analyzer RT 1904C product the categories of selected light filter is as follows 340nm 405nm 500nm 546nm 578nm 620nm 670nm totaled 7 kinds Different wavelength of light filter is needed for different test method Place the entire filters evenly on circumference of 8 hole round disk The angle of neighboring two hole is 360 8245 The remaining hole is preserved for adding unique wavelength filter in the future The round disk is rotated by step motor When step motor rotates on different angles different wavelength filters 1s selected by the system The model of step
13. agram 1 7 Inside of colorimetry system 11 1 3 Instrument parameter Linearity range Resolution Light source Wavelength excursion semi bandwidth Temperature control Flowcell Sample feeding volume Cuvette Cross pollution Storage Port Display Print Computer Working environment Storage environment Weight Dimension Fuse Power supply 12 0 000 2 500A 0 001 Abs display 0 0001 Abs inner calculation halogen tungsten lamp 6V 10W service life about 1000 hours 340 405 500 546 578 620 670nm One blank for optional filter 0 003A 30min lt 10nm Room temperature 25 30 37 C Peltier component precision 0 1 C 304 quartz flowcell 200 3000 1 add 50p 1 12 5mmX 12 5mm square test tube 1 500n 1 zx1 59e 300p 1 160test items 500 test results Mouse RS232 CRT RSTN Keyboard Printer 7 color LCD display 640 x 240line 256color Built in or external universal printer Embedded high speed processor 15 C 32 C Maximum humidity85 R H below30 C 20 C 50 C maximum 85 R H below 30 C 10kg 450mm L X 330mm W X 140mm H 250V 3 15A 110VAC 250VAC 10 50 60Hz Chapter 2 Function Description 2 1 RT 1904C function frame Refer to the following 2 2 Description of power source function The power used by the RT 1904C machine is provided by electric source module The high frequency PWM conversion technology is adopted so that the electric power has the advantage of small size light w
14. asses and voltage are high If voltage MOS tube is adopted to control on off of halogen tungsten lamp voltage drop of the voltage MOS tube is great the voltage consumption is also great many disadvantages such as heat emission will be brought along So the small relay is adopted to control The voltage drop of relay contact is almost zero And the voltage of relay line package is small Control signal is put out by Pg of 8255 Audion is used to drive on off of line package that control relay 17 2 5 Pipeline Function Description 2 5 1Function illustration In instrument measurement aspirate key is pushed system control drive the rotation of pump generator The pinch wheel of pump presses the pipeline and enable the tested liquid in pipeline extrude to liquid drainage port The tested liquid is absorbed into the flowcell When sample volume set by measuring item is absorbed the system control stops the pump generator Liquid to be tested is in the flowcell for measurement After measurement the system control drive the rotation of pump generator emptying the tested liquid in flowcell to decrease cross pollution and ready for the next measurement 2 5 2 Pipeline structure Diagram 2 3 Pipeline Structure 2 6 Light Path Function Description 2 6 1 Function illustration The optical structure of RT 1904C is as the above diagram spectrums structure after going through light filter After lightening tungsten halogen lamp radiat
15. cell 2 Turn off the power switches of instrument and printer respectively pull out electric source line 3 Dismantle printer cable with screwdriver Pull out external mouse connection line of modem and other cables connected to the Screws 7 analyzer Diagram 3 1 The location of screw used for connecting upper and lower covers 4 Place silk on a clean and smooth table reverse the instrument on the silk to prevent damage to outer surface of plastic cover of the instrument 5 Use screwdriver to unscrew seven screws used in connecting metal base and plastic upper cover according to the above diagram 6 Carefully place the instrument on the table open the light source cover take out the aspirate tube from the fix hole on upper plastic cover dismantle the flowcell also and place them in a safe place 7U Dismantle first the embedded printer cover flowcell cover pump cover Hold the front side of upper plastic cover with both hands carefully lift the upper plastic cover Notice 20 21 that the upper and lower covers are connected with many groups of cable Prevent excessive force that damages plug and sockets for cable connection If separation of upper and lower covers is needed the connection cable shall be pulled out from the socket The sketch map after separation of upper and lower covers is as the following Diagram 2 2 Sketch map after the upper and lower covers is separated 3 2 Lamp Replacement
16. d SL 4 Confirm key At sample test its function is equal to aspirate ENTER key 1 2 3 Back view op ai al i 3e 8 Gr 39 ote ooo e y 2a a e o9 6 aq d 1 5 Back view Power switch To switch on or off the power source of the analyzer Fuse Check fuse of instrument if there is no power supply after switch on the power switch AC INPUT Power source line socket Fan It is used in the cooling of instrument Printer port It is used to connect external printer Mouse port It is used to connect external mouse RS 232 port Communicate with PC CRT port It is used for connecting the external CRT display Key B Standard keyboard port It is used in the external standard keyboard If PS 2 port mouse is used a patch cord is needed to equip Telephone line port Connect telephone line for remote networking DRAIN PORT waste out here 1 2 Flowcell Open the cover of flowcell as indicated in the following drawing Note When opening the cover of flowcell or inner cover of light lamp press the two sides of cover so that it deform innerward and then open it according to the direction of the following drawing 10 Diagram 1 6 Opening the cover of flowcell Inside the colorimetry system there are e Incubation e Colorimetry bracket e Innercover of light source e Flowcell Inner cover of light source incubation Flowcell bracket Di
17. e light with filament as center is given out The radiate light is converted to parallel ray after going through convex The protection glass plays the role of protecting convex After the parallel ray shoots the flowcell with sample liquid to be tested a part of light energy is absorbed by liquid Light that shoot up is called shoot up light The shoot up light is changed to single color light after going through single color filter The single color ray shoots on the photoelectric receiver The photoelectric receiver transfer the light signal into electric signal and input it to front board for processing The color of filter and color of tested liquid shall be additive complementary colors 18 2 6 2 Light path structure 19 AS p af A e HL mgn Diagram 2 4 Light path sketch map L lamp Protection glass Convex flowcell filter signal receiving assembly Chapter 3 Fittings Replacement 3 1 Instrument Dismantling Method RT 1904C is a high precision and complicated instrument There is no component inside that can be repaired by users In case the instrument fails and cannot be solved on above method specialists will be sent for to repair When it is determined that inner parts of instrument has broken down and repair is needed please dismantle the instrument according to the following procedures 1 Thoroughly drain out the remaining liquids in pipeline of the instrument fix the flow
18. edge of instrument shall be close to the edge of working table The working table is prevented to have great vibration e g centrifuge is placed on the table Note The working environment of the instrument The temperature shall be 15 G32 C The related humidity shall be20 85 To ensure the normal operation of the instrument it is forbidden to mount the instrument in the following places e A place with extreme change of temperatures e A place too hot or too cold e A place with many dust e Close to electromagnetic equipment that can produce magnetic field 1 1 3 Power source requirement e ACIIOV AC250V e 50 60 Hz e 80W 1 1 4 Connect the instrument to the power source 1 Insert one end of power source line to the power source socket of the instrument 2 Insert the other end of power source line to the alternating current power source socket OQ The alternating current shall have fine grounding zero s voltage lt 5V O The alternating current shall be stable It is forbidden to use power source together with appliance with great voltage It is better to equip stable voltage power source If smoke peculiar smell or strange sound is found in the instrument turn off the power immediately and contact with repair service center When pulling out power source line hold the connector plugs do not hold power source line 1 1 5 Connect to the external printer 1 Confirm the printer and instrum
19. eight high efficiency high reliability high load adjustment ratio and power adjustment ratio etc Two stage conversion is adopted in the power structure One stage is single reverse current AC DC conversion the other is DC DC Buck converter so that the direct power exported from 4 passages had high voltage precision and adjustment rate The power source module exports 4 direct current the power usage situation is as the following CHI 12V 3 3A It is used in light filter generator pump generator Peltier temperature rise fall and fan generator CH2 5VW 2 6A It is used in the main board and front board logic control CH3 5 V 2A It is used in tungsten halogen lamp CH4 5V 3A It is used in embedded printer Ch5 6V 0 8A It is used in peltier temperature rise fall 2 3 Main board Function Description 2 3 1 Main board function illustration 1 It acts as system platform and provide operating environment for system software and application software 2 It provides connection port with front end system perform the control of front end system and data collection and processing It provides I O port of the system Component that supports the I O ports are as the follows four RS232 port that used respectively in the embedded serial port mouse embedded serial printer embedded modem and outer RS232 port 1 parallel printer port one key board panel port one external XT compatible key board port one embedded speaker port one
20. ent are closed 2 Insert the printing cable to the output port at back of the printer 3 Fix the plug with the wire button that is used for fixup 4 Insert the other end of printing cable into the RS 232 port of the instrument 5 Connect the printer with alternating current power source with power source line equipped in printer Note RT 1904C can also use special built in heat sensitive printer 1 1 6 Adjust the display to a appropriate position As indicated in the following drawing move the LCD display screen to an appropriate position deemed by you beware to impose proper strength Diagram 1 1 Adjust display screen 1 1 7 Place flowcell As indicated in the following drawing take away the cover of flowcell beware proper strength is used Diagram 1 2 Open the cover of flowcell 1 Tear the adhesive tape use in fixing flowcell 2 Remove packing materials 3 Place the flowcell into incubation carefully and make the aspirate tube in front Warning Do not touch the surface of transmit window of flowcell to avoid befouling of the transmit window with grease of hand and effect the absorbency 1 2 Structure 1 2 1 Front view Diagram 1 3 Front view Lamp cover The cover can be opened to replace lamp and perform pump maintenance Flowcell Cover Open this cover cuvette can be used to do sample test Aspirate tube absorb the sample into the flowcell Aspirate key Push the
21. gram 160 test items All the original program setting of tested items can be revised by user e It has double coloring system One is flowcell system and the other is cuvette system e Following test methods can be provided Endpoint Two point Kinetics Bichromatic Absorbency Multi Calibration e Itcan analyze samples of blood serum blood plasma whole blood and urine etc e It can connect to the internal network of hospital quality supervision center and Rayto user service center and bring great convenience to the work e Either built in printer or external printer can be selected e The external standard key board CRT display mouse and bar code scanners can be choose to equip 1 1 Installation 1 1 1 Unpacking of the instrument Unpack the instrument and remove the materials used for delivery Keep the packing boxes and materials for repacking the instrument in the future 1 Take the instrument out from the boxes 2 Take away the packing materials take out the instrument from the plastic packing bags 3 Check the articles in the packing box and confirm that the following articles are contained e RT 1904C mainframe e User s manual e Packing list e Repair guarantee certificate of the agent e Power source line 1 1 2 Select proper mounting location The instrument should not be directly exposed to the sun The working table selected shall be smooth in surface and has enough space to mount RT 1904C The front
22. late screw with red mat 3 Unscrew 3 screws with red mat draw outwards the receiver plate and the whole assembly can be seen ignal receiving end Power source line 4 Replace new signal receiving assembly connects power source line screw the screws add mat and equip with cassette Thus the replacement is finished SL Connect the other end of power source line in the 4pin and 2pin plugs of front board The signal receiver can work normally 27 3 6 Pipeline Change 1 Change of aspirate tube Hold the coarse side of flowcell Carefully pull out the aspirate tube from the sample feeding port of flowcell And replace it with a new one Refer to diagram 1 diagram 1 aspirate tube 2 Change of transfer tubel Hold the coarse surface of flowcell pull out the transfer tube from the liquid draining port pull out another end on the pump and equip with new transfer tube refer to drawing 2 Drawing 2 Transfer tube aspirate tube Note carefully perform the above operations do not let water drop on main board 28 3 Pump replacement The whole view of pump is as following Clip button Adjustment screw Pump body Clip bar Pump tube Generator Copper column The copper column is used to fix the pump on the RT 1904Cbase 1 Unscrew the adjustment screw and break off the clip button and clip bar 2 Open clip button the pump tube can be seen 2
23. late or adjust position of lamp The filter wheel does not rotate in place use philips driver to fix the filter wheel check the fix light coupling adjust position of light coupling or replace it Reset related printer in system configuration pull out plug or replace it Print cable and change printer Check whether the instrument is power on Check whether the power source plug is loosened Check the fuse Check the voltage Check whether the power source plug is loosened Check ON OFF button Check fuse The printer can not print There is no liquid in flowcell The results has low repeat performance The absorbing volume of flowcell is not constant The quality control is not in the range of targeted value When break line and set standard in end point method it is suggested that standard set error Temperature control time is too long Switch on RT 1904 first and then switch on printer Check whether the connection is in normal state Check whether the pump is in normal operation Check the connections of aspirate tube and flowcell port etc The aspirate tube is too long or too short The aspirate tube may be blocked and must be clean and unblock it The flowcell is very dirty There is bubble in flowcell and cleaning is needed Check the liquid absorbing of flowcell Aspirate tube inserts too deep into the flowcell pull it out a little Check whether the aspirate tube 1s blocked or not
24. motor is UBD6NO7DO4AKNC The reduction gear is equipped in the motor to increase the rotation moment The reduction gear is equipped together with step motor 8254 OUT After exporting filter and pulse related filter 1s selected 2 4 4 Liquid absorbing control of pump In the semi automatic biochemical analyzer RT 1904C the instrument automatically absorbs related amount of reagent according to the amount of liquid set by the test item Similar with the filter the step motor is adopted to control precision amount of liquid absorbing The control method is similar to that of the filter step motor When the step motor rotates different angel the instrument absorbs different amount of reagent Since the moment is large when pump is absorbing and rotating the double stages step motor is selected The model is 17HS1022 The double stage drive of L297 and L298 control drive chip are adopted in related circuit drive 16 Since the test sample is different and have different density it can offer different absorbing rate to users 1 8 rates are set on pump Different frequency division is written on Timer Count of 82C54 OUT exports different frequency the pump rotates in different rates 2 4 5 Temperature test and control Temperature control can be divided into temperature test and temperature rise fall The bus all digital temperature sensors DS1820 produced by DALLAS that can decrease peripheral conversion circuit is adopted in temperature
25. pling 38 Note This manual may contain other ownership declaration and copyright information Its articles shall be observed and abided by The information in the manual may have inaccurate parts in technology and printing error The manual can be revised or upgraded without additional notice Rayto company also can improve revise the product program described in the material at any time without additional notice 39
26. pment the XT compatible key board port and the LED indicator light port are expanded it provided transmission control of disconnected signal and control of local bus that connected on the front end And it produces the M signal for use in the STN LCD display screen Key board scanning and voice signal amplifying Key board scanning logic is constituted by low 4 area ofSH7709 PTC port and low 4 area of PTF ports to form a 4X 4 key board scanning SH7709 regularly give out from PTC ports the signal to scan keyboard The PTF port inspects the key push action it is delivered by LM386 and amplify and export the voice signal given out by SH7709 and Socket Modem to speaker port Power conversion circuit The system power provides 5V power for main board The main board need mixed power supply of 5V and 3 3V Therefore 5V to 3 3V power conversion of main board is needed 2 4 Front board Function Description 2 4 1 Front board function illustration 15 The front board is under the control of main board of computer The plate execute and complete all the unique functions of the semi automatic biochemical analyzer it is the control execution center of the semi automatic biochemical analyzer In the RT 1904C product of semi automatic biochemical analyze the front board mainly complete the following functions O Selection of light filter pump rotation to absorb certain amount of liquid Control of tungsten halogen lamp switch on off O
27. ry is distributed in the high 32M 3 district of system storage area and connects directly with HD64461 HD64461 supports the port with SH7709 color single color STN LCD port CRTU VESA VGA port and UART that is compatible with standard 16550 In the system the display port of HD64461 is connected with LCD or CRT display through UART it constitute one serial port of TTL electric level and connected with serial port of Socket Modem so as to provide remote maintenance ability for the system Serial communication port and parallel ports There is 4 serial communication ports and one parallel port on main board the serial port 2 on SH7709 constitute RS232 for outer use the PB port on HD64461 constitute TTL electric level serial ports to connect with modem through the expansion of TL16C55 chip another two serial ports and one parallel ports is provided by the system one serial port is used in connecting embedded mouse the other serial port is used in connecting of embedded printer the expanded parallel port is used in connecting external parallel printer The transmission rate of Socket Modem module data is14 4K bits it support At command bank connect with TTL serial port on HD64461 it connected outer simulation telephone line for use in support the remote diagnosis maintenance and upgrading of the system Programmable logic equipment The programmable logic part can complete logic control of various part of the system Through the equi
28. sorbed in the first machine opening switch off the machine and absorbed again the distilled water It is because that air 1s absorbed absorb again distilled water Change for new distilled water There is air in the pipelines re connect or change pipeline The light intensity of lamp is low change lamp The flowcell is damaged change the flowcell The flowcell has not been insert to the bottom There are no factors factor does not been input in the kinetic method Standard has not been set in end point method and two points method or the standard was set but haven t get the factor in the calibration The parameter is not right re input is needed There is bubble or defilement in flowcell Do it again after cleaning The light filter is aging replace light filter Check whether the front board Signal receiver are damaged The aspirate volume is too low increase the volume The reaction liquid is polluted There is dirt in light path blow with ear absorb ball or dismantle light path to clean use lens wiping paper The lamp is in the wrong location make re adjustment Check whether the lamp and light filter are aging change if there is any The switch fails change the switch Power source fails import to J3 must be 5V J10 must be 5SV 6V 0V Ji 1 must be 12V 5V OV replace it The software is damaged upgrade the software Disorder screen Historical data item cannot be entered Temperature
29. vessel or NACLO O 1IN tween 20 diluted liquid 2 3drop L are used to clean flowcell Push RINSEkey to absorb the detergent again push RINSEkey to stop the rotation of pump Let the detergent to settle in flowcell for 5 minutes At last continuous clean it for 1 minute by distilled water If it cannot be cleaned with once cleaning detergent can be used to clean for a second time The flowcell shall be cleaned in the following circumstances The water blank difference is too large when open the machine 3 O Transfer test items Before closing the machine Warning Do not let reaction liquid or other pollutant in the flowcell for a long time 32 Chapter 5 Common Malfunction List Malfunction time pop up randomly date can not be stored after change Water blank value is not stable it is high and negative value Great absorbency differences No test results The test is not accurate there is great deviations in results Low light intensity Blank screen and break down when start the machine 33 Settlement Battery used out replace another battery Check whether the D2 D3 beside battery is damaged replace it Bubble is liable to be absorbed in the flowcell The flowcell is dirty clean the flowcell with 5 NaClO for several times and clean it with distilled water Sample feeding tube is break replace it Signal receiving assembly is damaged replace it Air is ab
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