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Jenway 6310 Spectrophotometer Service Manual

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3. Potassium Dichromate 50 0mg l in 0 005M Sulphuric Acid use the Sulphuric Acid as the blank This will give Absorbance values of 0 536 at 350nm 0 242 at 313nm 8 8 3 Sodium Nitrate 50g l in deionised water should give less than 0 196 transmittance at 340nm All these solutions are hazardous and the manufacturer suppliers safety precautions should be carefully followed at all times in preparation use and storage 631 070 Ver A 09 04 8 8 4 Wavelength Verification Equipment Required A certified wavelength standard i e Holmium Oxide Filter Holmium Perchlorate Solution etc See Section 8 8 1 Turn the unit on and allow the Start Up tests to complete then allow 15 minutes for the instrument to warm up Select the Spectrum mode on the instrument Set a range on the scan which will cover all the peaks required under test and at least 10nm above and below the first and last peaks Run a baseline scan over the selected range using either a solvent blank or a blank filter holder Run a scan of the filter or solution and select the peaks function within the options menu This will display a list of peaks and the peak absorbance values NOTE If it is known that there are other peaks closer than 10nm to the certified peak then the this peak may not be suitable for this check on the 6310 due to the bandpass of the instrument Check that the reported peak wavelength falls within the specified tolerance of the instrument PL
4. 04 2 6 Power Supply Voltages Also see Section 9 Circuit Diagrams Before commencing complex fault finding it is important to check all the internally generated supply voltages are correct The following list is a useful guide to help quickly check these are functioning correctly Not all the points where these voltages can be measured are given and where the voltage is stated as unregulated variations may occur In general regulated supplies should vary by no more than 5 from their nominal value Tungsten Lamp Supply 12V dc regulated and set by VR1 measure at SKY pin 5 with respect to SKY pin 6 on the power supply PCB and at the terminals on the lamp base with the lamp fitted This value should be within 0 2V of 12V dc Solenoid and Fan Supplies 12V dc regulated and pre set measure at SK1 pin 1 with respect to SK1 pin 2 on the power supply PCB and on the solenoid and fan terminals Digital Supply 5V dc regulated and pre set measure at SK5 pin 1 with respect to SK5 pin 2 or on SK1 pin 1 with respect to SK1 pin 2 on the Display PCB Stepper Motor Drive 30V dc unregulated measure between Star1 and Star 2 on power supply PCB DAC Supply 10V dc supplies 10V dc generated on the RS232 Interface IC3 on the Display PCB measure between pins 2 positive and 15 0V on IC3 on the Display PCB 10V dc generated on the RS232 Interface IC3 on the Display PCB measure between pins 6 negative and 15 0V on IC3 on th
5. 10 x 10 Cell Holder 631 070 Ver A 09 04 2 3 Special Key Functions There are a number of special key functions for use by trained engineers do not use them unless you are fully conversant with all the procedures these keypresses can invoke Power On Reset Hold down the lt Enter gt key while turning on the power This clears the operator set parameters held in non volatile memory and is useful in correcting many software conflicts This will also reset any internal methods or data stored Please ensure that customer methods and important data are printed or stored prior to performing a reset As this procedure by passes the start up routine the instrument must be re booted before use Diagnostics Mode Hold the lt right arrow gt key depressed while turning on the power The main display shows the diagnostics menu See Section 7 1 View Start Up Routine Hold down the lt Cal gt key while turning on the power This enables the detector output and grating position to be monitored on the display during the Start Up Routine Skip Power On Self Tests Hold down the lt Print gt This can be used for diagnostics purposes 631 070 Ver A 09 04 2 4 Signal Levels Also see Section 7 2 Filters and 8 3 Energy Levels All analogue signal processing is dealt with on the Detector PCB The output from the detector is shown in the Diagnostics mode as a Voltage in mV For more information see Section 5 2 Detector Circuit and Secti
6. Start up error codes Warning Operating Parameters reset to Defaults This message indicates that the parameters stored in non volatile memory such as methods data time language etc have been reset to defaults POWER H TESTS WARHIHG OPERATING PARAMETERS RESET TO DEFAULT It is a warning only and a press of the enter key will bypass and complete the startup tests This message will automatically display after a power on reset Persistent display of this message on startup indicates a problem with the Display PCB battery back up The battery may need replacing Service Fault 001 Unable to calibrate dark level Dark level calibration has been performed twice the first time the user is asked to check sample lid is closed POWER ON TESTS UHABLE TO CALIBRATE TO DARE LEUEL PLEASE CHECK SAMPLE LID IS CLOSED 631 070 Ver A 09 04 The second time this service fault is displayed POWER OW TESTS SERUICE FAULT i UPPER LIMIT i 32 DETECTOR OUTPUT 183 1 Check the lid of the spectrometer for light leakage into the sample chamber this can be due to damage to the lid or material obstructing the lid 2 Check the dark shutter by entering diagnostics mode see section 7 Select 540nm and check that green light is observed at the sample chamber Activate the dark shutter the light should be completely obscured If light is still visible then the dark shutter needs attention 3 Check th
7. but there is a small probability that identical readings will be obtained if the offset for all three stages are all equal to zero This test is performed with the dark shutter closed to prevent saturation therefore an inoperative solenoid may cause this fault to be reported if the wavelength is close to Onm saturation at full lamp voltage 1 Recalibrate the detector board using the procedure in section 8 6 2 Replace the detector board 2 5 2 In use error messages The following messages are only shown when the instrument has completed its start up tests ensuring that the instrument is functional The majority of causes for the following messages are related to user error or application difficulty Calibration Error Dark level too high Dark level too high during a functional calibration In normal operation the dark shutter closes during an operator instigated calibration sequence to ensure that the detector output is below a threshold level The calibration is aborted and Calibration Error Dark level too high indicated if the detector output is above this threshold level The most likely cause is that the sample chamber door has been left open or was opened during the calibration sequence it may also occur due to light leakage cause by a blockage or a faulty detector PCB Fault finding is as Service Fault 001 above Calibration Error Light level too low gt Light level too low during a functional calibration A
8. due to the bandpass of the instrument Check that the reported peak wavelength falls within the specified tolerance of the instrument PLUS the tolerance of the filter or standard used Calculate the adjustment required to correctly align the reported figure with the certified value from the following Certified Value Reported Value Correction factor can be negative or positive maximum correction permissible is 10 0nm Switch the unit off and re start it in the Diagnostics Mode by holding down the right hand arrow key while turning power on Add the Correction factor to the current Zero offset value and enter the new Zero offset value Switch the unit off and then on again allowing the Start Up tests to be completed re check the certified wavelength calibration standard as above and check that the reported value is now correct 631 070 Ver A 09 04 8 6 A to D Calibration The A to D converter should only be calibrated by engineers who have been trained on this aspect of servicing by Jenway Equipment Required A certified voltage calibrator with a resolution of 0 1mV and a range up to at least 4 0000V A lead for connecting the calibrator to pins 1 negative and pin 3 positive of SK2 on the detector PCB 8 pin Molex type connector Access the Detector PCB by removing the top case assembly as described in Section 8 2 Dismantling Remove the jumper from pins 3 and 4 on SK2 on the Detector PCB and fit the lead conne
9. key The menu options on the bottom of the screen can be selected by use of the left and right arrow keys To set the parameters for scanning select Options This sub menu allows the user to select Method Peaks Valleys or Recall Scan Within the Method option the start and end point of the scan can be selected as can the scan interval There is also a method ID number which can be used to identify stored methods To perform a sample scan place a cuvette of sample in the chamber and select SCAN on the main scanning display The scan will autorange once complete Once a scan has been performed the UP and DOWN arrow keys can be used to read wavelength specific information from the display 631 070 Ver A 09 04 E Calibrating Ton HDH Anm 400 hinm Anm EXIT EE OPTIONS To exit back to the main menu the enter key should be pressed with the exit option selected on the bottom of the screen For a detailed explanation of scanning please see the instruction manual section 5 6 2 3 Kinetics The display will show the absorbance the wavelength and the method id The lt LEFT gt and lt RIGHT gt arrow keys can be used to select menu options at the bottom Prior to starting a kinetic run a blank need to be performed by pressing the lt CAL gt key The option on screen will change to Start The kinetics parameters are set by selecting Options Followed by Method A sample run is initiated by Pressing Start on the mai
10. marks dust and condensation can quickly destroy sensitive and expensive optical components always wear cotton gloves when 631 070 Ver A 09 04 the optical bench is uncovered and handle any components by their edges only Never touch optical surfaces Do not remove optical covers unless the unit is in a clean dust and condensation free environment Many of the reagents solutions and standards used for maintenance and calibration are corrosive or hazardous ensure all precautions supplied with them are followed where there is any doubt request a MSDS Material Safety Data Sheet from the supplier This instrument can be used for analysing a broad range of samples do not handle them unless you are qualified to do so Ensure that the instrument has been correctly decontaminated before working on it specifically in areas where the instrument may have been used for clinical biological corrosive or radioactive samples For additional information regarding decontamination contact Jenway or your local Health and Safety Authority 1 4 Standards amp Certification No adjustments should be made to this instrument unless the test and measurement equipment signal source or filters have a current calibration certificate that is traceable to national or international standards and that it is known that this test equipment is currently performing to the certified standards All solutions and reagents should be fresh and within stated shelf life
11. set 3 Confirm the operator ID number by pressing the enter key which will close the pop up box 631 070 Ver A 09 04 OPERATOR ID K COH IDH QUA OK INSTRUMENT SETUP SECURITY SET OPERATOR ID This current ID will be used in the header of all result printouts and result data transferred to a PC or other serial device 631 070 Ver A 09 04 Section 7 Diagnostics 7 1 The Diagnostics Mode 7 2 Signal Readout 7 3 Filter and Lamp Control 7 4 CAL ADC 7 5 CAL DAC 7 6 CAL Zero Wavelength 7 7 Zero offset 7 8 Find Peak 631 070 Ver A 09 04 7 1 The Diagnostics Mode The Diagnostics mode is accessed using the following Special Keyfunction hold down the right arrow key while turning the power on The Diagnostics menu will then be displayed 29 336 353 MWA 3 88m WAVELENGTH 406 6 LAMP VOLTAGE Du IR FILTER OUT DARK SHUTTER OUT CAL ADC CAL DAC CAL ZERO WRUELEHGTH ZERO OFFSET a FIND PEAK When performing tests within the diagnostics menu please ensure that all setting such as lamp voltage and filter positions are correct as changing the wavelength may cause these parameters to reset to default settings and not the desired test settings 7 2 Signal readout The top three lines of the display show the outputs from the detector the linearised voltage and the current wavelength The outputs labelled CHO CH1 and CH2 are from the detector board these are the values described in section 5 2 The typical values sh
12. with a certificate of analysis 1 5 Ordering Spares When ordering spare parts as detailed in this manual please quote the Model Number Serial Number Description and Part number of the equipment These items should be ordered from the original supplier of the equipment or your local Jenway Distributor 631 070 Ver A 09 04 1 6 Returning Items Should it be necessary to return any item for any reason then this should be done through the original supplier of the equipment or your local Jenway Distributor For items returned to Jenway please note no items can be returned to or will be accepted by Jenway without a Returns Authorisation number RA number and a completed Safety Clearance certificate Failure to do so will delay any repair to your equipment 1 7 Contacting Jenway Before contacting Jenway please check our web pages for any information or updates that may be helpful to you www jenway com Emails should be sent to Technical Support jenway com Fax 44 1371 821083 Phone 44 1371 820122 631 070 Ver A 09 04 Section 2 Quick Reference 2 0 About Quick Reference 2 1 Specification 2 2 Main Sub Assemblies 2 3 Special Key Functions 2 4 Signal Levels 2 5 Error Codes 2 6 Power Supply Voltages 2 7 Test Solutions 631 070 Ver A 09 04 2 0 About Quick Reference This section contains a selection of the key information that will be commonly used when servicing or supporting the Jenway 6310 For more
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17. H 001440 LLO 610 808 890 610 M9LOS 190 610 001449 850 610 001440 45610 MS8TOS 950 610 09440 ozo 610 DI 690 810 ros 190 810 ro ts0 810 NEO L 0 00 za drian t 0 500 id TLOS re a 808 0 00 sol ETLOS t0 00 10 EZLOS 1r0 00 z 0802 101 200 12 L12712 3231 001 200 123 LNWLO 060 700 99 S EI TI 679 8TI LTD 925 TD 022 612 912 12 12 0802 680 700 12 212701282 LI PD 0802 L80 700 TI 0804 Ris ua raed 0801 8 100 3 LY rni tien TINY 011 ZON SONY FOT 00130 SCH LEN YOU 0801 08 100 si TM ONE OY FU LU 080 TLE 100 ord s080 t9 100 Myy HA E cnt 0809 95 100 LM s080 TE 100 sey HON CON TOU ICH TU 0801 T6T 100 i n n n e adi 19QUINN 220212123 2190 utd ju uoduuop WING aure SEAN YO pouuojiad oq o1 uaua d stuawaynbay mauoduo 00 0 8 Assy Wis adwn XOE9 631 070 Ver A 09 04 Section 10 Assembly Diagrams 10 1 6310 Final Assembly 631 003 10 2 6310 Lower Case Assembly 630 510 10 3 6310 Top Case Assembly 631 004 10 4 6310 Optics Assembly 630 580 10 5 6310 Rear Panel Assembly 630 012 631 070 Ver A 09 04 631 070 Ver A 09 04 1 Ava ES e MUTTON D s T ve uer zew asma xP ppa e 3135 MON og GE ss xsv sanoa maj EI pp 0351 U U Ver A UY U4 831 38010HdD81238S 0969 TE art AVANGI AVANA E wauxos DE T kPa lt lt Tar AMMISSV 35v dni qua yu s s sma op T Dp E CO op AP O rms mmu Sa
18. HRELE TO RCCESS CALIBRATION DATA Calibration data for A to D conversion is stored on the detector board in an EEPROM The failure to read this data may be due to a problem with the data or a failed component on the detector board 1 Recalibrate the detector board using the procedure in section 8 6 2 Replace the detector board Service Fault 004 Failed to locate zero order wavelength peaks Wavelength calibration has been performed twice the first time the user is asked to check the sample lid is closed and the lamp is on POWER OW TESTS FAILED TO LOCATE WAVELENGTH PEA PLEASE CHECK SAMPLE CHAMBER EMPTY AND LAMP IS OK 631 070 Ver A 09 04 The second time this service fault is displayed POWER ON TESTS SERVICE FAULT 664 FERK LEVEL H IS M LIMIT IS 186m 1 Check the lamp is a genuine Jenway supplied lamp and that the lamp lights up 2 Start the unit in diagnostics mode and select 540nm check the sample chamber for green light in front of the sample holder If no green light is observed check that the IR filter and dark shutter are operational and out of line If the filters are not obscuring the light it is possible that the unit requires Zero order calibration see section 8 3 3 Check the sample chamber is not obscuring the light by checking the green light after the sample chamber 4 Check the status of the IR filter by selecting 350nm in diagnostics mode and recording the sign
19. Jenway 6310 Spectrophotometer Service Manual Main Index Section 1 Introduction Section 2 Quick Reference Section 3 System Description Section 4 Optical Description Section 5 Electronic Description Section 6 Software and Operation Section 7 Diagnostics Section 8 Maintenance Section 9 Circuit Diagrams Section 10 Assembly Diagrams Section 11 Spare Parts List 631 070 Ver A 09 04 Section 1 Introduction 1 0 Index to Sections 1 1 About This Manual 1 2 Using This Manual 1 3 Warnings amp Safe Practice 1 4 Standards amp Certification 1 5 Ordering Spares 1 6 Returning Items 1 7 Contacting Jenway 631 070 Ver A 09 04 1 0 Index to Sections Section 1 Introduction 1 0 Index to Sections 1 1 About This Manual 1 2 Using This Manual 1 3 Warnings 8 Safe Practice 1 4 Standards 8 Certification 1 5 Ordering Spares 1 6 Returning Items 1 7 Contacting Jenway Section 2 Quick Reference 2 0 About Quick Reference 2 1 Specification 2 2 Main Sub Assemblies 2 3 Special Key Functions 2 4 Signal Levels 2 5 Error Codes 2 6 Power Supply Voltages 2 7 Test Solutions Section 3 System Description 3 1 Background 3 2 Sub Assemblies 3 3 Accessories 3 4 Outputs Section 4 Optical Description 4 1 Light source 4 2 Grating 4 3 Shutter and Filter 4 4 Signal Detector Section 5 Electronic Description 5 1 Power Supplies 5 2 Detector Circuit 5 3 Microprocessor and Display 631 070 Ver A 09 04 Sect
20. The output to solenoid 1 Dark Shutter is via SK9 pins 1 and 2 The output to solenoid 2 IR Stray Light Filter is via Sk9 pin 3 and 4 5V Digital Supply The other transformer secondary output is half wave rectified and regulated to 5V by the linear regulator REG 2 The output is distributed via SK5 pin 1 Ancillary Supplies to the end stop opto coupler are connected via SK2 pins 1 to 4 The RS232 output accessible through the rear panel on SK6 is fed from the microprocessor PCB via SK5 IC1 and 2 TEA3717DP are the stepper motor drivers controlled from the microprocessor PCB via SK5 pins 9 to 12 with outputs to the motor on SK2 pins 5 to 8 631 070 Ver A 09 04 5 2 Detector Circuit Detectors and Amplifiers The current through the detector D1 S1133 type fitted is proportional to the incident light IC3a acts as a current to voltage converter the gain being set by the feedback resistors in the T network In normal operation pins 3 and 4 of SK2 are linked so the signal passes to the three amplifiers of IC1 IC1b is set for unity gain IC1c has a gain of 10 and IC1d a gain of 100 A to D Conversion Each of these amplified signals then pass into the first three channels CHO to CH2 of an 8 channel 12 bit serial A to D converter All three channels are converted and the microprocessor selects the channel that gives the best resolution without reaching saturation 32767 counts In effect this means CH2 will be selected for in
21. US the tolerance of the filter or standard used 631 070 Ver A 09 04 8 8 5 Absorbance Verification Equipment Required Certified Standard Absorbance Filters or Potassium Dichromate solution See Section 8 8 2 Turn the unit on and allow the Start Up tests to complete then allow 15 minutes for the instrument to warm up Select the photometrics mode Use the up or down arrow keys to select a wavelength at which the filter or solution is certified For the Potassium Dichromate solution use the Sulphuric Acid solution as a blank See Section 8 8 2 if the filter set includes a zero filter use this as the blank if not set the blank zero absorbance or 100 transmittance with an empty sample chamber Insert the blank into the sample chamber and close the lid Press the CAL key and ensure the display reads 0 000 ABS 10096 T Remove the blank from the sample chamber Insert the certified filter or Potassium Dichromate solution and check that the reading is within the specified tolerance of the instrument PLUS the tolerance of the filter solution used Repeat this for other filters or solutions and at other specified wavelengths as necessary 631 070 Ver A 09 04 8 8 6 Stray Light Verification Equipment Required Certified Stray Light Filters or Sodium Nitrate Solution or Sodium lodide Solution See Section 8 8 3 Turn the unit on and allow the Start Up tests to complete then allow 15 minutes for the instrument to warm up Select
22. al level with the IR filter IN line and OUT of line The level with the filter should not be less than 5096 the unfiltered light If necessary replace the IR filter System test Errors The first test during the startup is the system test This is an internal check of the software possible failures during this process are as follows Invalid DAC count One or all of the stored DAC calibration values stored in EEPROM exceed their upper or lower limits IHVALID DAC COUNT LOWER LIMIT UPPER LIMIT 100 ACTUAL 631 070 Ver A 09 04 This relates to data stored DAC values stored in the EEPROM on the processor board 1 Calibrate DAC using procedure in section 8 7 2 The EEPROM may be faulty replace the processor board Invalid detector calibration data One or all of the stored A to D calibration values stored in EEPROM exceed their upper or lower limits IHURLID DETECTOR CALIBRATION DATA LOWER LIMIT 406 UPPER LIMIT SABA ACTUAL S588 This relates to data stored ADC values stored in the EEPROM on the detector board 1 Recalibrate the detector board using the procedure in section 8 6 2 Replace the detector board A to D not operating Readings from the x1 x10 and x100 gain inputs of the A to D are all equal POWER ON TESTS SYSTEM TEST 100 P L A Tn D NOT vgl OPERATING RETRY IH 3 SECONDS 631 070 Ver A 09 04 This is most likely to indicate that the A to D is not functioning
23. cted to the calibrator Switch the calibrator on and select a negative output or reverse the contacts Select the A to D calibration mode by turning the unit on with the Right arrow key depressed and selecting the CAL ADC function within the diagnostics mode The initial prompt is for 1mV set the calibrator to give an input signal of 1mV let the upper display settle and then press the enter key Then the prompt changes to 20mV set the calibrator to 20mV let the upper display settle and then press the enter key Continue responding to the prompts in this way for 39mV 200mV 390mV 2000mV and 3900mV Note that the 39mV and 390mV levels are repeated as these are the cross over points from one channel to the next When successfully completed the display returns to the last settings used in the measurement mode 631 070 Ver A 09 04 8 7 D to A Calibration Equipment required Voltmeter capable of reading 2 0V with aresolution of 1mV The D to A calibration sets the levels of the analogue output This is carried out with the on board voltage reference at zero and 2000mV Select the D to A calibration mode by holding the right arrow depressed while the power is turned on In the diagnostics mode select CAL DAC Connect a voltmeter to the analogue output on the rear panel Select a range that will display 2000mv to 0 1mV resolution The first prompt indicates an output level of 2000mV use the up and down and
24. d the results of a calibrated wavelength filter to ensure that the reported wavelength is accurate Please see section 8 3 for a full description of how to use this function as part of a wavelength calibration 7 8 Find Peak This function will search 20nm around the currently selected wavelength and will display the peak wavelength in that range This can be used find the zero order peak around Onm with the lamp voltage set to 5V 631 070 Ver A 09 04 Section 8 Maintenance 8 1 Routine Maintenance 8 2 Dismantling 8 3 Optical Alignment 8 4 Energy Levels 8 5 Wavelength Calibration 8 6 A to D Calibration 8 7 Dto A Calibration 8 8 Performance Verification 631 070 Ver A 09 04 8 1 Routine Maintenance The Jenway Limited Model 6310 Spectrophotometer has been designed to give optimum performance with minimal maintenance lt is only essential to keep the external surfaces clean and free from dust and to ensure that the area around and underneath the unit is also clean and dust free The sample area should be kept clean and accidental spillage should be wiped away immediately as some corrosive or solvent based samples or standards may attack the materials used in the construction of the sample chamber and cell holders To give added protection when not in use the unit should be disconnected from the mains supply and covered with the optional dust cover 630 028 For longer term storage it is recommended that the unit be returned t
25. der the Optical Bench 631 070 Ver A 09 04 To adjust the position select a wavelength of 50nm and select the INP function on the IR filter menu option Slacken the two fixing screws slightly and adjust the position of the opto coupler until the display changes from OPEN to BLOCKED Tighten the screws and check that at 40nm the display will show OPEN and that at 50nm it shows BLOCKED If not repeat as above 8 4 Energy Levels All analogue signal processing is dealt with on the Detector PCB The output from the detector is shown in the Diagnostics mode as a Voltage in mV For more information see Section 5 2 Detector Circuit and Section 7 1 The Diagnostics Mode This voltage display can be used to check lamp energy ageing the correct functioning of the IR filter the Dark Shutter and its related solenoid 320nm Energy In the Diagnostics Mode see Section 7 1 Diagnostics Mode set the wavelength to 320nm close the Dark Shutter Allow the mV reading to stabilise and record the stable value Open the dark shutter arrow key and the mV reading must increase by more than 4mV from that recorded above If not the lamp should be changed if it still has not improved then the condition and alignment of the optical components should be checked Dark Current Set wavelength to 320nm Dark Shutter closed IR stray light filter closed Voltage Display should be zero 6mV If not and no light leaks are obvious damaged seals aro
26. directly coupled to the stepper motor which is under microprocessor control An opto coupler mounted just behind the grating acts as an end stop when the sensor vane connected to the grating mount blocks the light path across it The stepper motor is a high torque stepper motor which can only be moved by the signal from the two stepper motor driver chips on the power supply PCB IC1 an IC2 See section 5 1 Power supplies The Grating should not be handled in any way no cleaning of the grating is possible If you suspect the grating has been cleaned in any way you should seek advice from Jenway 4 3 Filter and shutter The diffracted spectrum then passes through a further slit and lens arrangement after which the light beam can be blocked by a shutter switched in and out by an electronically operated solenoid Before passing into the sample chamber the monochromatic light passes through an infra red filter when wavelengths below 360nm are selected Similar to the shutter this filter is switched in or out by an 631 070 Ver A 09 04 electronically operated solenoid under microprocessor control The IR filter is designed to absorb IR light at wavelengths below 360nm No cleaning of this filter is possible due to its optical coating attempts to clean the filter will remove this coating and the filter will degrade at an accelerated rate 4 4 Signal Detector An S1133 photo diode is used as the detector on the 6310 it is mounted directly onto
27. e Display PCB 631 070 Ver A 09 04 2 7 Test Solutions These solutions can be used as an alternative to calibrated filters 1 Holmium Perchlorate 5 w v solution of Holmium Oxide in 1 4N Perchloric acid this will give absorbance maxima at 361 4 416 1 451 1 485 3 536 5 and 640 5nm 2 Potassium Dichromate 100 0mg l in 0 005M Sulphuric Acid use the Sulphuric Acid as the blank This will give an Absorbance value of 1 071 at 350nm Potassium Dichromate 50 0mg l in 0 005M Sulphuric Acid use the Sulphuric Acid as the blank This will give an Absorbance value of 0 536 at 350nm 3 Sodium Nitrate 50g l in deionised water should give less than 0 1 Transmittance at 340nm Deionised water Blank All these solutions are hazardous and the manufacturer suppliers safety precautions should be carefully followed at all times in preparation use and storage 631 070 Ver A 09 04 Section 3 System Description 3 1 Background 3 2 Sub Assemblies 3 3 Accessories 3 4 Outputs 631 070 Ver A 09 04 3 1 Background The model 6310 is a single beam UV visible spectrophotometer with Photometrics Absorbance and Transmission Scanning kinetics Concentration and Quantitation measurement modes The unit also features method and data storage GLP functions and optional PC control software This manual covers the service maintenance and repair of all units 3 2 Sub Assemblies The model 6310 spectrophotometer can ea
28. e dark current in diagnostics mode A high signal level gt 6mV 320nm indicates a problem with the detector board The calibration of this board is described in section 8 6 Service Fault 002 Unable to Locate Endstop Detector Unable to locate the 50nm endstop detector during wavelength calibration POWER ON TESTS SERUICE LE TO LOCATE END STOP DETECTOR The Jenway 6310 uses an opto coupler to define the limit of movement for the grating This error occurs during the wavelength calibration procedure in the start up routine and is generated at the beginning of this procedure The grating is driven in a clockwise direction until the attached vane breaks the path of an opto coupler This is effectively the end stop and the point from which auto calibration will always start 631 070 Ver A 09 04 1 Check the Function of the Optocoupler section 8 3 1 2 Ensure that green light is displayed at 540nm and that the grating is moving by selecting a wavelength at least 100nm from 540 and check that the light is no longer green Should the instrument not display green light at 540nm see section 8 3 Failure to detect this point may be due to a faulty opto coupler wavelength drive from the power supply PCB a faulty motor or mechanical coupling Service Fault 003 Unable to Access Calibration Data Unable to read back data written to the EEPROM located on the detector board POWER ON TESTS SERUICE FAULT Bas LI
29. ed at the sample chamber Activate the dark shutter the light should be completely obscured If light is still visible then the dark shutter needs attention 7 4 Cal ADC This option is used to calibrate the Analogue to Digital Converter on the detector board if these calibration values have become corrupt or if an uncalibrated detector board is fitted See section 8 6 for a detailed description on how to use this menu option 7 5 Cal DAC This option is used to calibrate the Digital to Analogue converter on the display PCB which generates the analogue outputs on the rear of the unit See section 8 7 for a detailed description on how to use this menu option 7 6 CAL Zero Wavelength This function will set the displayed wavelength in the diagnostics mode to Onm This does not affect the stored wavelength calibration which will be used the next time the instrument is started up This function is used to confirm that a calculated zero offset equates to zero order prior to changing the zero offset described in section 7 7 and section 8 3 7 7 Zero Offset Warning This function can be used to re set the stored wavelength calibration data so a new wavelength calibration must be carried out after this procedure has been used Also see Section 8 3 Optical Alignment This function is used to reset the wavelength calibration of the unit The offset value is the difference between the measure zero 631 070 Ver A 09 04 absorbance value an
30. ed wavelength calibration data is applied This test is carried out in the following manner the microprocessor instructs the grating to drive to its minimum value of 200nm This should ensure that the vane attached to the grating mount breaks the light path of the opto coupler mounted on the monochromator base plate that is set at a position of approximately 50nm If it does not 631 070 Ver A 09 04 receive a signal from the opto coupler then error code Service Fault 002 Unable to Locate Endstop Detector is returned when the motor stops In correct operation a signal is returned when the vane reaches the opto coupler Then the microprocessor instructs the grating to rotate in the reverse direction in 1nm steps for 200nm or until a signal greater than 200mV is returned from the detector this level with the lamp dimmed can only be produced by the white zero order light If this 200mV level can not be achieved then the grating stops after having rotated the 200nm and an error code Service Fault 004 Failed to Locate zero order wavelength peaks is returned In correct operation when this 200mV level is detected the grating rotates in the same direction for a further 200nm but in 0 5nm steps For each step an increasing output is returned until the peak is reached The grating is stopped when a decrease in output is measured and by reversing again for one step the position of the peak is verified If the grating rotates the f
31. everse of dismantling but ensure that all cables are carefully fitted in the appropriate recesses so that they are not crushed when screwing the unit down When fitting a replacement unit ensure a full calibration is run so that the new calibration data for the new Optical Bench is stored See Section 8 5 8 4 and 8 7 Power Supply PCB Remove the Optical Bench as above and place to one side The power supply PCB is easily removed by undoing the four screws holding it to the lower case assembly SK3 to the transformer and SK1 to the fan should be removed before lifting it out of the lower case Cooling Fan Carry out the above procedures to enable the fan to be lifted out of its recess in the lower case Ensure the position of the retaining spring and the direction of the airflow are noted for re assembly Transformer Remove SK3 from the power supply PCB and the push on connectors for the cables that go to the mains switch and inlet filter assembly Then remove the transformer by undoing the single 631 070 Ver A 09 04 bolt through the centre that holds it to the moulded bracket in the base assembly 8 3 Optical Alignment In a significant development from the 6300 the optical alignment of the 6310 has been significantly simplified To ensure that zero order alignment is achieved on start up it is only essential that the opto coupler is positioned at approx 50nm as the zero order position will be automatically detected from this p
32. f the case can be lifted off the bottom half take care not to strain any cables between the top and bottom sections Should it be necessary to work on the top case assembly by itself it is simply a matter of disconnecting the plug from SK5 on the power supply PCB then the top can be completely removed Microprocessor Display PCB The microprocessor display PCB is mounted in the top case assembly To remove it disconnect SK1 on the ribbon cable to SK5 and PL601 to the membrane keypad Unscrew the four screws and the PCB can be removed The display module and microprocessor PCB should be treated as a pair and replaced together Removing the display from the PCB should not be attempted The software for the unit is contained within IC9 which features a sticker identifying the version Removal of this label may damage the component and will invalidate the warranty Should the software need to be upgraded it is this chip which will be replaced This PCB also features the battery which ensures non volatile memory storage The battery is designed to last the life of the instrument however if it needs replacing it should be removed with a IC extraction tool and replaced Detector PCB The detector PCB is mounted vertically at the far right hand side of the lower chassis It is easily removed by unscrewing the two screws recessed in the top of the metal mounting block SK4 on the power supply PCB should be removed In normal operation SK2 should have pin
33. fter the dark level test above is complete the instrument will calibrate the available light to 0 000A or 100 T If insufficient light is detected Calibration Error lt Light level too low will be displayed This may be caused by the following 631 070 Ver A 09 04 1 The Blank Calibrant is too optically dense dark Calibrate the unit on an empty cuvette in photometrics mode and insert the sample This will display the transmission of the sample If the transmission is low then dilute the Blank Calibrant to an appropriate level 2 The lamp may have failed since the start up tests check for light at the rear of the unit replace lamp if needed 3 The cuvette may not be suitable for the analysis that you are doing Visible plastic may give poor transmission at wavelengths below 400nm The use of small volume cuvettes of the incorrect type may also cause this error please contact Jenway for more details on Cuvettes Calibration Error Factor out of range When using the concentration mode on the instrument a factor is determined automatically based on the absorbance and standard value entered If a factor is generated by this procedure which is greater than the maximum factor this error will display This may be because the standard is too optically dense at the wavelength selected Dilution of the sample is the usual approach it may be possible for the measurement to be undertaken at a different wavelength 631 070 Ver A 09
34. he EEPROM may be faulty replace the processor board 631 070 Ver A 09 04 Invalid detector calibration data One or all of the stored A to D calibration values stored in EEPROM exceed their upper or lower limits IHURLID DETECTOR CALIBRATION CATA LOWER LIMIT 406 UPPER LIMIT 3668 ACTUAL S588 This relates to data stored ADC values stored in the EEPROM on the detector board 3 Recalibrate the detector board using the procedure in section 8 6 4 Replace the detector board A to D not operating Readings from the x1 x10 and x100 gain inputs of the A to D are all equal POWER OH TESTS SYSTEM TEST lagz DAI A ro p NOT WA OPERATIHG RETRY IH 5 SECONDS This is most likely to indicate that the A to D is not functioning but there is a small probability that identical readings will be obtained if the offset for all three stages are all equal to zero This test is performed with the dark shutter closed to prevent saturation therefore an inoperative solenoid may cause this fault to be reported if the wavelength is close to Onm saturation at full lamp voltage 1 Recalibrate the detector board using the procedure in section 8 6 631 070 Ver A 09 04 2 Replace the detector board 6 2 Main Menu The menu options can be selected using the up and down arrow keys please note it is possible to select the display options so some or all of the options below may not visible To display all options please see
35. information check out the references to the main sections on each point 2 1 Specification Also see Section 11 1 of the Instruction Manual Wavelength Range Wavelength Resolution Wavelength Accuracy Spectral Bandwidth Light Source Optics Transmittance Range Resolution Absorbance Range Resolution Photometric Accuracy Photometric Noise Stray Light Photometric Stability Outputs Supply Voltages Power Dimensions Weight 320nm to 1000nm 1nm 2nm 8 0nm Tungsten Halogen Single Beam 0 to 199 9 0 1 0 300A to 1 999A 0 001A 1 Less than 1 Less than 0 5 T Better than 1 per Hour after warm up Analogue 0 to 1999mV amp RS232 Serial 115 230 V a c Less than 50W 365 w x 272 d x 160 h mm 6Kg 631 070 Ver A 09 04 2 2 Main Sub Assemblies Also see Section 11 Spare Parts 631 004 Top Case Assembly includes the following 631 020 Membrane Keypad 631 040 Display PCB includes EPROM toc PCB Battery 630 510 Lower case Assembly includes the following 630 580 Optics Assembly 630 504 Power Supply PCB 630 506 Detector PCB 060 311 Cooling Fan 010 040 Torroidal Transformer 630 580 Optics Assembly includes the following 012 075 Tungsten Halogen Lamp 032 005 12V Solenoid 630 516 IR Filter supplied as a Kit 635 016 Rear Panel Assembly includes the following 016 021 2A Fuse 20 x 5mm 017 050 Mains Switch 009 123 Mains Input Socket Misc 630 204 Single
36. ion 6 Software and Operation 6 0 Warning 6 1 Start Up Routine 6 2 Main Menu Section 7 Diagnostics 7 1 The Diagnostics Mode 7 2 Signal Readout 7 3 Filter and Lamp Control 7 4 CAL ADC 7 5 CAL DAC 7 6 CAL Zero Wavelength 7 7 Zero offset 7 8 Find Peak Section 8 Maintenance 8 1 Routine Maintenance 8 2 Dismantling 8 3 Optical Alignment 8 4 Energy Levels 8 5 Wavelength Calibration 8 6 A to D Calibration 8 7 D to A Calibration 8 8 Performance Verification Section 9 Circuit Diagrams 9 1 Power Supply PCB Schematic 630 504 9 2 Power Supply Layout 630 504 9 3 Detector PCB Schematic 630 506 9 4 Detector PCB Layout 630 506 9 5 Microprocessor PCB Schematic 870 001 9 6 Microprocessor PCB Layout 870 001 Section 10 Assembly Diagrams 10 1 6310 Final Assembly 631 003 10 2 6310 Lower Case Assembly 630 510 10 3 6310 Top Case Assembly 631 004 10 4 6310 Optics Assembly 630 580 10 5 6310 Rear Panel Assembly 630 012 631 070 Ver A 09 04 Section 11 Spare Parts List 11 1 Packed Instrument 11 2 Top Case Assembly 11 3 Microprocessor display PCB 11 4 Lower Case Assembly 11 5 Optics Assembly 11 6 Detector PCB 11 7 Power Supply PCB 11 8 Rear Panel Assembly 631 070 Ver A 09 04 1 1 About This Manual This manual covers the service maintenance calibration and repair of the Jenway model 6310 Spectrophotometer This manual must be used in conjunction with the Instruction Manual P N 631 050 for
37. lects the LCD controller IC11 The microprocessor interface to IC11 is slowed down by the circuitry associated with IC10 to meet the timing requirements of LCD controller IC11 controls the 128 x 118 pixel graphics LCD via row and column drivers IC13 14 15 and 16 The LCD controller stores LCD pixel data in a 64K SRAM IC12 connected directly to IC11 The bias voltage for the LCD is generated by IC2 A 12 bit DAC IC4 generates the analogue output This is scaled to 2000mV by the differential amplifier circuit based on IC5a The watchdog circuitry IC17 monitors the activity of the microprocessor while IC3 generates the correct levels for the RS232 output The EEPROM contains a unique ID code which enables the spectrometer to be used with the 63TEN PC software If the main PCB is replaced this code need to be pre programmed at the factory to ensure that it is compatible with the user s software Please ensure that the serial number of the 6310 is notified when an order for a replacement PCB is placed 631 070 Ver A 09 04 Section 6 Software and Operation 6 0 Warning 6 1 Start Up Routine 6 2 Main Menu 631 070 Ver A 09 04 6 0 Warning This section gives an overview of the software functions it is not meant to be a detailed analysis of the software routines or code It must not be treated as a substitute Instruction Manual its purpose is to enable basic navigation through the operation and set up of the 6310 spectrophotometer s
38. left and right arrow keys to adjust the actual reading on the voltmeter to 2000mV The left and right arrow keys change the output in 5mV steps the up and down arrow keys in 1mV steps When the correct level is reached press the enter key and the prompt moves on to OmV repeat the above for this and the 2000mV levels When successfully completed the display returns to the diagnostics mode Please note that entering the DAC calibration will delete the previously stored values and the displayed values will be the default setting To check the calibration restart the 6310 in normal mode and select photometrics mode Using samples or filters ensure that the displayed absorbance value is accurately represented on the voltmeter display 631 070 Ver A 09 04 8 8 Performance Verification Equipment Required 1 Certified Wavelength Standard 2 Certified Absorbance Standards 3 Certified Stray Light Standard Items 1 and 2 above can be supplied as Calibration Filter Sets order part numbers 035 088 visible Only or 035 091 UV Visible Where filters are not available the following reagents may be used 8 8 1 Holmium Perchlorate 596 w v solution of Holmium Oxide in 1 4N Perchloric acid this will give absorbance maxima at 361 4 416 1 451 1 485 3 536 5 and 640 5 8 8 2 Potassium Dichromate 100 0mg l in 0 005M Sulphuric Acid use the Sulphuric Acid as the blank This will give Absorbance values of 1 071 at 350nm 0 484 at 313nm
39. n be set using this menu The mode setup option at the bottom of the menu leads to a further screen This menu can be used to display only the relevant methods on the main menu At least one option should be selected EXIT PHOTOMETRICS SPECTRUM KINETICS CONCENTRAT IUH EIHETICS CONCENTRATION INSTRUMENT SETUP SECURITY ca mih SET OPERATOR ID For full details please refer to the instruction manual section 3 2 3 3 If a user has locked his 6310 and has forgotten the code to unlock the unit a generic security code can be used This code is 660 for the 6310 A power on reset will also clear nay lock codes but this will also clear all method and data memory 6 2 6 Set Operator ID The operator ID is a three digit code that can be quickly and easily entered from the main menu This ID will appear in the header of all results printed or downloaded from the model 6310 identifying the operator that carried out the analysis When using this facility all potential users should be allocated individual three digit codes Operators should enter their code using the following procedure 1 Use the up or down arrow keys to select SET OPERATOR ID from the main menu then press the enter key 2 A pop up box opens on the display showing the three digits of the last set operator ID or the default of 000 Use the right and left arrow keys to highlight each digit in turn for adjustment with the up or down keys until the new operator ID is
40. n display AE OPTIONS When the run has started the display will change to show the graph of absorbance against time once complete the display will autorange The results can then be displayed by selecting the results option on the main screen 631 070 Ver A 09 04 03 Abs Per Mint 0 243 R Sauaredi A 368 6 619 Final Abs A 747 Ex IT HEL OPTIONS The graph can be recalled or the result can be saved by selecting Options on the display For a detailed explanation of kinetics please see the instruction manual section 6 To exit back to the main menu the enter key should be pressed with the exit option selected on the bottom of the screen 6 2 4 Concentration The display shows concentration wavelength and the method ID Method details can be accessed by selecting method on the menu at the bottom of the screen To perform a blank calibration press the CAL key To calibrate against a standard the value of the standard should be set in the method menu and press the ENTER key This will set the factor to a value which will give the standard value at the absorbance of that standard LIB 546 ID METHOD EXIT METHOD ID 1 WAVELENGTH 546 STANDARD 10 400 FACTOR 1 000 UNITS mar RESOLUTION 8 81 The Concentration mode is only designed to perform simple single point linear calibration for more complex analysis the quantitation mode should be used For a detailed explanation of concentrati
41. nam OT Me EC 631 070 Ver A 09 04 LOI VER sl t OLLI wis Pes OT Mal y Y E ATEWISSV 5 mun OO Scc ave al was ow CEIC og EES ja ve 631 070 Ver A 09 04 MAINS ON OFF SWITCH HOTOME TER NEL ASSEMBLY 6300 SPECTROPI 3 MAINS SOCKET VOLTAGE ELECTO REAR PA rT LI LI E a d RA Cheole BATEZSO796 APPR DATE DRG REF 630 012 e J c fol jx Tete ange i l i ip jj il ProyECTION ki elo CIS BE 631 070 Ver A 09 04 Section 11 Spare Parts 11 1 Packed Instrument 11 2 Top Case Assembly 11 3 Microprocessor PCB 11 4 Lower Case Assembly 11 5 Monochromator Assembly 11 6 Detector PCB 11 7 Power Supply PCB 11 8 Rear Panel Assembly 631 070 Ver A 09 04 6310 SPARE PARTS LIST Section 11 1 631 001 Packed Instrument 033 227 Packing case complete with inserts 060 084 Disposable cuvettes 4ml pack of 100 631 050 Instruction manual 013 046 Mains cable without plug 013 083 Mains Cable U S A plug 013 123 Mains Cable European plug 013 181 Mains Cable U K plug 631 070 Service Manual 630 028 Dust Cover 630 204 10 x 10 sample holder Section 11 2 631 004 Top Case Assembly 631 040 Microprocessor PCB 631 020 Membrane keypad tbc Sample Chamber Lid Section 11 3 631 040 Microprocessor PCB 870 001 Micro processor PCB 631 010 EPROM Programmed Section 11 4 630 510 Lower Case Assembly 010 040 Torroidal
42. nly be undertaken by personnel trained and equipped to verify the optical performance of the instrument Instrument covers should only be removed by engineers trained in safe working practices and aware of electric shockhazards Removal of the Optical Bench cover will invalidate any warranty claim regarding performance to specification Do not look directly at the light source use eye protection or the lamp dimming function when necessary Do not touch any optical surfaces If in any doubt DO NOT PROCEED Hold down the Right arrow key and power up the unit in diagnostics mode Remove the top half of the case by undoing the four recessed screws in the corners of the base Place the top half of the case behind the base taking care not to trap or strain the connecting cables Remove the Optical Bench cover observing all the previously stated precautions Select a wavelength 540nm and check that the grating rotates correctly Pass a piece of thick paper or card between the jaws of the opto coupler and select the INP function on the IR filter menu option Check that when the card is inserted a BLOCKED is displayed on the top of the display and that when it is removed this display shows OPEN If these results are correct then the position should be adjusted as below if not then the opto coupler or power supply PCB may be faulty There may also be a bad connection between them Check the wiring to SK2 and that no wires are trapped un
43. nstruction Manual Pin configuration for the RS232 socket is given in Section 11 3 of the Instruction Manual The RS232 socket is used to connect to the optional PC software PN 631 100 All the required cables are included in the original shipment of the 6310 for additional or replacement cables order an interface cable kit 542 009 631 070 Ver A 09 04 Section 4 Optical Description 4 1 Light Source 4 2 Grating 4 3 Filters 4 4 Signal Detector 631 070 Ver A 09 04 Introduction The model 6310 is based on the established and successful model 6300 visible spectrophotometer The optical system is controlled by the microprocessor with a stepper motor driven grating and automatically selected IR filter A long life tungsten halogen lamp is used and the optics optimised to cover the wavelength range of 320 to 1000nm with a spectral bandwidth of 8nm 4 1 Light Source The 6300 uses a single Tungsten Halogen lamp to cover the full wavelength range from 320 to 1000nm This is a pre focussed lamp selected for the accurate position of the filament making realignment after replacement unnecessary The use of lamps other than those supplied by Jenway part number 012 075 will cause error codes to be displayed and result in erroneous results See Section 9 2 of the Instruction Manual 4 2 Grating From the lamp the light passes through a lens assembly then onto a flat holographic grating with 1200 lines per millimetre The grating is
44. o the original carton for re shipment a further external packing case suitable for the method of carriage should be used Details of all routine maintenance tasks including changing the lamp can be found in Section 9 of the Instruction Manual 8 2 Dismantling Before dismantling any of the following sub assemblies ensure that the unit is switched off and the power cable is disconnected from the supply Do not attempt to dismantle these units unless they are in a clean dry and dust free environment Use a soft lint free cover on any benches that will have casework displays or keypads placed on them Use approved and tested anti static procedures when dismantling any electronic sub assembly or PCB and store these items in antistatic containers where necessary General Access to all major sub assemblies can easily be gained by removing the top half of the case Access to the lamp housing can be made through the lamp access panel on the rear of the unit The sampling accessory can be accessed through the sample chamber lid 631 070 Ver A 09 04 Top Bottom Case Assemblies The top and bottom case assemblies can easily be separated by unscrewing the four recessed screws in each corner of the base This should be done without inverting the unit by moving it forward over the front edge of the bench to unscrew the front two screws and then turning it around to do the same with the back two Turn it back round and then the top half o
45. on 7 1 The Diagnostics Mode This voltage display can be used to check lamp energy ageing the correct functioning of the IR filter the Dark Shutter and its related solenoid 320nm Energy In the Diagnostics Mode see Section 7 1 Diagnostics Mode set the wavelength to 320nm close the Dark Shutter Allow the mV reading to stabilise and record the stable value Open the dark shutter and the mV reading must increase by more than 4mV from that recorded above If not the lamp should be changed if it still has not improved then the condition and alignment of the optical components should be checked Dark Current Set wavelength to 320nm Dark Shutter closed IR stray light filter closed Voltage Display should be zero 6mV If not and no light leaks are obvious damaged seals around sample chamber lid not closing fully damaged or poorly fitted casework etc then the dark shutter or detector PCB may be faulty 720nm Output Set wavelength to 720nm Dark Shutter open IR stray light filter open Voltage Display must not be greater than 3600mV If greater than 3600mV check the lamp lamp supply voltage other power supply levels and detector PCB 631 070 Ver A 09 04 2 5 Error Codes See also Section 6 7 and Section 9 of the Instruction Manual A number of Service Fault Codes are generated that relate to fault conditions these are detailed below with a brief description of some of the most common causes for these errors 2 5 1
46. on please see the instruction manual section 7 631 070 Ver A 09 04 To exit back to the main menu the enter key should be pressed with the exit option selected on the bottom of the screen 6 2 5 Quantitation The display is exactly the same as for concentration To set up the quantitation analysis select Options on the bottom of the screen Method information is accessed by selecting Method within the options menu A maximum of six standards can be used and these are entered by selecting standards table To start a run select construct curve Once a run is in progress it can be aborted by selecting this options on the screen EXIT ABS METHOD ID 2 b 2 STD WAVELENGTH 546 UNITS g l RESOLUTION B 1 NO OF STDS 4 A 50 9 1 FIT Interrolate ABORT CAL For a detailed explanation of quantitation please see the instruction manual section 8 To exit back to the main menu the enter key should be pressed with the exit option selected on the bottom of the screen 6 2 4 Instrument setup By selecting this option the time date date format and language can be set EXIT TIME 10 39 56 DATE Bri21 04 DATE FORMAT MM DD YY LANGUAGE English For full details please refer to the instruction manual section 3 1 631 070 Ver A 09 04 6 2 5 Security The lock code for the instrument can be set on this menu along with activating the lock code When the instrument is locked method choice can be allowed this functionality ca
47. osition Minor adjustments in wavelength accuracy can be achieved by setting an offset of up to 10nm from the detected zero order peak This offset is set using the procedure described in section 8 5 Wavelength calibration 8 3 1 Grating Position Sensor The operation and position of the sensor can be check in the diagnostics mode using the following procedure 1 Select diagnostics mode by depressing the right arrow key and powering up the instrument 2 Select a wavelength of 50 using the menu option 3 Select the IR filter option on the diagnostic menu and set this to INP using the enter key 4 The upper display should show BLOCKED 5 If the display should show OPEN then check wavelengths up to 100nm in steps of 10nm and wavelengths down to Onm in steps of 10nm 6 If this procedure does not find the opto coupler position then follow the separate adjustment procedure below If the position of the opto coupler is detected during this procedure the unit does not require mechanical adjustment and minor corrections can be applied using the zero offset function in section 8 5 8 3 2 Grating position sensor adjustment This procedure can irreversibly affect the performance and operation of the instrument Please read the following warnings and request help or clarification before proceeding Carrying out this procedure will invalidate the manufacturers optical 631 070 Ver A 09 04 performance specification and should o
48. ould be X 10X and 100X where X is an integer value Values above the maximum value 32767 will be displayed as the maximum value All three channels are converted and the microprocessor selects the channel that gives the best resolution without reaching saturation 32767 counts In effect this means CH2 will be selected for inputs up to 40mV CH1 for inputs up to 400mV and CHO for inputs up to 4 0V The next line displays the current voltage output which was selected from the three above This is the voltage required for the tests in section 2 5 The wavelength can be selected using the left and right arrow keys or press enter when wavelength is highlighted and select which wavelength you wish to move to 631 070 Ver A 09 04 IMPORTANT Prior to exiting the diagnostic menu a readable wavelength should be selected 320nm to 1000nm This ensures that the startup tests can be performed as normal 7 3 Filter and lamp Control The Lamp voltage option displays the current lamp voltage either 5V or 12V This is not a measured voltage see section 2 6 When selected the voltage can be toggled between 5V and 12V by pressing the lt ENTER gt key This is used to check zero order position as at 12V the light at zero order would be over the range of the detector The IR filter option displays the current status of the IR filter IN OUT or INP This option can be used to test the function of the IR filter and its solenoid To Check the statu
49. photometrics mode Select a wavelength at which the filter or solution is certified 340nm for Sodium Nitrate Fill a cuvette with the deionised water used to make up the solutions and place it in the sample chamber Or for a filter standard use the blank filter supplied by the manufacturer Press the CAL key and ensure the reading is 100 0 Insert the stray light filter or solutions as above and ensure that the reading is within the specified tolerance of the instrument PLUS the tolerance of the filter solution used 631 070 Ver A 09 04 Section 9 Circuit Diagrams 9 1 Power Supply PCB Schematic 630 504 9 2 Power Supply Layout 630 504 9 3 Detector PCB Schematic 630 506 9 4 Detector PCB Layout 630 506 9 5 Microprocessor PCB Schematic 870 001 9 6 Microprocessor PCB Layout 870 001 Note Spare part is as per section 11 03 which includes the current EPROM 631 070 Ver A 09 04 092 ate PHOWSYIS 85d 23 mod ZAW QOES 180d 22258 Age ATddNS DION AS EEES vu saa wes mo TAY PR Seg Wenig o 2 3135 10N 00 senor 631 070 Ver A 09 04 ADD RETT _ ZTLOZE LEO jl 322 S ZAW Ge Pi uso esse CT AVMNaC LOS OCF sno Azara case 86 8 80 KAES CG uojssjuJed USNM nou jo esn pew esjmieyjo JO p snposd s eq jou jsnu pue ju6jp doo si Gujmeap siut FIVIS Fa ZS nya S319NY 2196 LON OG p Sua1awvia sv 18nod NI l EF SYD 310H MEL ED NOILO3POBd De 3719NY O
50. puts up to 40mV CH1 for inputs up to 400mV and CHO for inputs up to 4 0V The A to d converter requires a reference voltage of 4 096V which is generated from the 5V rail by D4 this is fed to pin 14 Ref of the A to D converter IC2 The EEPROM IC4 maintains calibration data for the PCB see Section 8 6 A to D Calibration 5 3 Microprocessor and Display The microprocessor IC1 is an H8 3002 type with 1Mbyte linear address space its internal 32 bit architecture is register based and optimised for software written in the C programming language A 20 bit address bus is used with an 8 bit external data bus to interface with the memory mapped devices The operating system software is stored in the 256Kbyte EPROM IC9 This will have a label attached identifying the software version and date programmed Removal of this label may damage the component and will invalidate the warranty The microprocessor internally maps the memory space using chip select signals CS0 to CS3 CS4 to CS7 are not used CSO and CS1 select the EPROM 631 070 Ver A 09 04 CS2 selects the 32Kbyte SRAM IC8 This device also incorporates the real time clock and is battery backed by a non rechargeable lithium battery minimum data retention 8 years The battery can be replaced if persistent failure of the battery backed data is reported during the power on self tests This would be indicated by repeated display of the error message described in Section 6 1 1 CS3 se
51. s 3 and 4 linked Remove the two screws and spacers that hold the lens block take care not to rotate it as the detector is mounted in a recess inside the block and can easily be broken off Remove the last screw with its nut and washer to enable the electrostatic screen to be removed from the PCB 631 070 Ver A 09 04 Ensure that the three spacers used to isolate the electrostatic screen are replaced when the board is replaced The lens block and the electrostatic screen should be retained when the board is exchanged as these are not supplied with a replacement detector board The Detector PCB stores detailed calibration data relating to the optics of the unit it is fitted in replacing the detector PCB without a full re calibration will invalidate the quoted specification Optical Bench The Optical Bench is located across the front of the lower case It is a sealed unit and breaking the seals will invalidate the warranty Before proceeding with replacement ensure the unit is in a clean dust and humidity free area In addition ensure that the instrument is set to the default setting 500nm to ensure wavelength accuracy Remove the four screws from the base plate two at the front one at the far right hand side in front of the detector PCB the other on the far left hand side Carefully lift the Optical Bench assembly unplugging the connectors SK1 and SK9 without straining the cables The Optical Bench can now be removed Replacement is the r
52. s of the IR filter select 350nm and record the signal level with the IR filter IN line and OUT of line The level with the filter should not be less than 50 the unfiltered light If necessary replace the IR filter The INP function which is accessed via the IR filter option is used to test the optocoupler endstop INP is selected by pressing enter when the IR filter line is highlighted press once if the IR filter is listed as OUT or twice if the IR filter is IN and the second line of the display will show OPEN or BLOCKED dependant on the status of the optocoupler To test the function of the optocoupler a wavelength of approx 50nm should selected and the INP option then selected on the IR filter control IF the display shows OPEN at 50nm then move the wavelength value around until BLOCKED is displayed Failure to locate the position of the endstop may indicate a loss of zero order calibration or a failed optocoupler Movement of the wavelength will override the selection made by this menu Hence if the wavelength is changed then filter settings need to be rechecked The Dark shutter option displays the current status of the dark shutter When selected the dark shutter can be toggled between IN and OUT 631 070 Ver A 09 04 by pressing the lt ENTER gt key This function is used to check the dark level section 2 4 and the operation of the dark shutter Check the dark shutter by selecting 540nm and check that green light is observ
53. s service fault is displayed POWER ON TESTS SERVICE FAULT 664 FERK LEVEL IS M LIMIT IS 188m 631 070 Ver A 09 04 5 Check the lamp is a genuine Jenway supplied lamp and that the lamp lights up 6 Start the unit in diagnostics mode and select 540nm check the sample chamber for green light in front of the sample holder If no green light is observed check that the IR filter and dark shutter are operational and out of line If the filters are not obscuring the light it is possible that the unit requires Zero order calibration see section 8 3 7 Check the sample chamber is not obscuring the light by checking the green light after the sample chamber 8 Check the status of the IR filter by selecting 350nm in diagnostics mode and recording the signal level with the IR filter IN line and OUT of line The level with the filter should not be less than 50 the unfiltered light If necessary replace the IR filter System test Errors The first test during the startup is the system test This is an internal check of the software possible failures during this process are as follows Invalid DAC count One or all of the stored DAC calibration values stored in EEPROM exceed their upper or lower limits IHVALID DAC COUKT LOWER LIMIT UPPER LIMIT 100 ACTUAL 118 This relates to data stored DAC values stored in the EEPROM on the processor board 3 Calibrate DAC using procedure in section 8 7 4 T
54. s the path of an opto coupler This is effectively the end stop and the point from which auto calibration will always start 3 Check the Function of the Optocoupler section 8 3 1 4 Ensure that green light is displayed at 540nm and that the grating is moving by selecting a wavelength at least 100nm from 540 and check that the light is no longer green Should the instrument not display green light at 540nm see section 8 3 631 070 Ver A 09 04 Failure to detect this point may be due to a faulty opto coupler wavelength drive from the power supply PCB a faulty motor or mechanical coupling Service Fault 003 Unable to Access Calibration Data Unable to read back data written to the EEPROM located on the detector board POWER ON TESTS SERUICE FAULT Bau UHAELE TO RCCESS CALIBRATION DATA Calibration data for A to D conversion is stored on the detector board in an EEPROM The failure to read this data may be due to a problem with the data or a failed component on the detector board 3 Recalibrate the detector board using the procedure in section 8 6 4 Replace the detector board Service Fault 004 Failed to locate zero order wavelength peaks Wavelength calibration has been performed twice the first time the user is asked to check the sample lid is closed and the lamp is on POWER OW TESTS FAILED TO LOCATE WAVELENGTH PERE PLEASE CHECE SAMPLE CHAMBER EMPTY AND LAMP IS Ok The second time thi
55. security setup section 6 2 5 Press enter to select the highlighted option PHOTOMETRICS SPECTRUM KINETICS CONCENTRATION QUANTITATION INSTRUMENT SETUP SECURITY SET OPERATOR ID 6 2 1 Photometrics The display returns to the last wavelength used before the instrument was turned off The wavelength displayed on the lower digital display can be adjusted by using the up and down arrow keys to select the value suitable for a specific application 0549 28 3 o40 The display shows the Absorbance value top and the transmission value middle These two modes are calibrated by simply inserting a cuvette or test tube containing a blank solution in the sample chamber closing the lid and pressing the CAL pushbutton Calibrating will display while the calibration sequence is in progress when it stops the main digital display will be set to 100 0 T and 0 000 ABS automatically 631 070 Ver A 09 04 Sample measurement can then be carried out by inserting a cuvette or test tube containing the sample solution into the sample chamber closing the lid and recording the value on the main display 0085 0000 1000 540 o40 EXIT To exit back to the main menu the enter key should be pressed 6 2 2 Spectrum The display will show the default graph axis and baseline required will be displayed on the screen To perform a Baseline scan place a blank cuvette in the sample chamber and press the CAL
56. sily be broken down into sub assemblies for the purposes of repair or replacement All the PCBs are easily removed see Section 8 2 Dismantling The optical assembly is also a replaceable sub assembly There is a range of sampling accessories that can be easily fitted and removed from the sample chamber 631 070 Ver A 09 04 3 3 Accessories The following sampling accessories are available where necessary additional service information for these accessories is available on request The development of other sampling accessories is continuous please check current brochures or www jenway com for up to date information 631 100 63Ten PC software 633 001 Electrically heated cell holder 632 001 External Sipper Pump 230V 632 031 External Sipper Pump 115V 634 001 4 Position Cell Changer 630 020 Test Tube Holder 13mm diameter 630 021 Test Tube Holder 25mm diameter 630 022 Test tube Holder 16mm diameter 630 005 20 to100mm Single Cell Holder tbc Reaction tube holder 648 001 Water Heated Single Cuvette Holder 037 201 Water refrigerant Circulator for use with 648 001 543 001 External 40 Column Printer 542 009 Interface Cable Kit 630 028 Dust Cover This item requires a separate water bath please contact Jenway for details 3 4 Outputs The 6300 has both analogue and RS232 outputs Details of the level of the analogue output for the different ranges that may be selected on the instrument is given in Section 11 2 of the I
57. the detector PCB behind the lens block The detector PCB carries out the entire analogue signal processing including the A to D conversion and has its individual calibration data stored in an on board EEPROM For more information see Section 5 2 Detector Circuit 631 070 Ver A 09 04 Section 5 Electronic Description 5 1 Power Supplies 5 2 Detector Circuit 5 3 Microprocessor and Display 631 070 Ver A 09 04 Introduction The 6310 features three modern PCB s utilising modern surface mount technology It is designed to be serviced at the PCB interchange level Some components may be replaced if necessary see Section 11 5 1 Power Supplies See Section 9 1 Power Supply Schematic The ac mains supply is reduced by the torroidal transformer giving two low voltage outputs from the secondary windings First the 20V ac output from the transformer is rectified by BR1 the 30V dc output from this rectifier is used as the input to two L4960 switch mode regulators REG1 and REG 3 Tungsten Lamp Supply The output of the switch mode regulator REG 3 is set to 12V dc by VR1 The 12V output can be reduced to 5 1V by a logic 1 on the gate of TR2 This happens during the start up tests to reduce the light level for accurate zero order detection it can also be manually reduced when in the Diagnostics Mode Solenoid and Fan Supply The output of the switch mode regulator REG1 is pre set to 12V The output to the fan is via Sk1 pin 1 and 2
58. this model as many of the routine maintenance procedures detailed in the Instruction Manual are not repeated in this Service Manual 1 2 Using This Manual This manual is only for the use of Engineers and Technicians who have successfully completed a Jenway approved Service Training course on the Model 6310 Spectrophotometer Updates to this manual will be circulated through Jenway to registered users of this manual Please complete the form at the rear of this manual to register your copy for future updates The manual should be read completely prior to commencing servicing the 6310 spectrophotometer Section 2 Quick Reference and Section 8 Maintenance with the Diagrams in Section 9 and 10 will be most frequently used To find the information required refer to the Main Index or Index to Sections to identify the relevant Section page number required 1 3 Warnings amp Safe Practice Always disconnect the mains supply when any covers are removed as there are voltages present inside the unit that pose the risk of electric shock at levels that are hazardous to life Do not look directly at the light source or allow the light beam to fall directly on the eyes switch off or dim the lamp Section 7 3 whenever possible and wear eye protection at ALL times The lamp gets very hot when in use always allow time for it to cool down before removal Always wear cotton gloves when removing a faulty lamp and replacing with a new one Finger
59. transformer assembly 060 040 Large rubber feet 060 311 Cooling fan 12V 60mm tbc Sample chamber retaining screw 630 204 10 x 10 Cell Holder Section 11 5 630 580 Monochromator Assembly Tbc Tungsten halogen lamp mounting 012 075 Tungsten halogen lamp 032 005 Solenoid 12V dc 630 516 IR Filter 6300 kit 012 089 Chassis mount optocoupler Section 11 6 630 506 Detector PCB 630 506 Detector PCB assembly 6300 002 054 470uF 16V radial electrolytic capacitor 631 070 Ver A 09 04 012 085 Photodetector 6300 020 002 Voltage regulator 79L05 020 006 Voltage regulator 7805 Section 11 7 630 504 Power Supply PCB 630 504 Main power supply PCB 002 070 1000uF 25V radial electrolytic capacitor 005 024 Bridge rectifier 002 112 4700uF 40V radial electrolytic capacitor 020 027 L4960 voltage regulator 006 115 25 way D socket 009 124 4mm socket red 009 125 4mm socket black Section 11 8 640 006 Rear Panel Assembly 009 123 Mains input socket 016 021 2A fuse 20mm for 220V supply 062 241 Lamp Panel Retaining Screw 017 050 Switch rocker 2p Please ensure that the serial number is supplied with any order for this microprocessor board to ensure it contains the same ID code as the original instrument 631 070 Ver A 09 04
60. ufficient to verify basic operation 6 1 Start Up Routine When the power to the unit is switched on a self test routine is activated During these start up tests the following parameters are checked and must be passed before operation can continue any failure noted during these tests would lead to an error message see section 6 1 1 System Tests A series of tests are performed on the stored parameters in the instrument memory to ensure that valid data is read from the EEPROM s on the Display PCB Power supply PCB and the Detector PCB The A to D cal information and the DAC cal information is checked at this point A power on reset will cause an error to be displayed at this point indicating that internal non volatile memory has been reset to defaults Dark Level Test The light beam is blocked by the dark shutter solenoid switching in This test checks that the output of the detector is below a threshold level when there is no light falling on it The test will be failed if the sample chamber lid is left open during the start up routine if the dark shutter solenoid is faulty electrical or mechanical or if the Detector PCB is faulty Wavelength Calibration This test checks for the zero order white light that is reflected through the sample chamber when the grating is in a position where it acts as a mirror effectively Onm Each time the unit is switched on this position is used as a physical reference point against which the stor
61. ull 200nm without the output increasing and then falling the error Service Fault 004 Failed to Locate zero order wavelength peaks is returned This test will be failed if samples or cuvettes are left in the sample compartment during the start up routine if the sample holder or sampling device in the sample chamber is incorrectly fitted aligned such that it obscures the light beam Also if the incorrect lamp is fitted if the lamp has not been fitted correctly if the dark shutter is stuck in the closed position or through contamination degradation or misalignment of other optical components 631 070 Ver A 09 04 6 1 1 Error Codes A number of Service Fault Codes are generated that relate to fault conditions these are detailed below with a brief description of some of the most common causes for these errors Warning Operating Parameters reset to Defaults This message indicates that the parameters stored in non volatile memory such as methods data time language etc have been reset to defaults POWER N TESTS WARHIHG OPERATING PARAMETERS RESET TO DEFAULT It is a warning only and a press of the enter key will bypass and complete the startup tests This message will automatically display after a power on reset Persistent display of this message on startup indicates a problem with the Display PCB battery back up The battery may need replacing Service Fault 001 Unable to calibrate dark level Dark le
62. und sample chamber lid not closing fully damaged or poorly fitted casework etc then the dark shutter or detector PCB may be faulty 720nm Output Set wavelength to 720nm Dark Shutter open IR stray light filter open Voltage Display must not be greater than 3600mV If greater than 3600mV check the lamp lamp supply voltage other power supply levels and detector PCB 631 070 Ver A 09 04 8 5 Wavelength Calibration Equipment Required A certified wavelength standard i e Holmium Oxide Filter Holmium Perchlorate Solution etc See Section 8 8 1 Wavelength calibration can be carried out in the Diagnostics Mode using the zero offset function Do not carry out the following procedure without a suitable certified wavelength calibration standard Turn the unit on and allow the Start Up tests to complete then allow 15 minutes for the instrument to warm up Select the Spectrum mode on the instrument Set a range on the scan which will cover all the peaks required under test and at least 10nm above and below the first and last peaks Run a baseline scan over the selected range using either a solvent blank or a blank filter holder Run a scan of the filter or solution and select the peaks function within the options menu This will display a list of peaks and the peak absorbance values NOTE If it is known that there are other peaks closer than 10nm to the certified peak then the this peak may not be suitable for this check on the 6310
63. vel calibration has been performed twice the first time the user is asked to check sample lid is closed POWER ON TESTS LIHRELE TO CALIBRATE TO DARE LEVEL PLEASE CHECK SAMPLE LID IS CLOSED The second time this service fault is displayed POWER OW TESTS SERVICE FAULT AA UPPER LIMIT DETECTOR outeur E 631 070 Ver A 09 04 4 Check the lid of the spectrometer for light leakage into the sample chamber this can be due to damage to the lid or material obstructing the lid 5 Check the dark shutter by entering diagnostics mode see section 7 Select 540nm and check that green light is observed at the sample chamber Activate the dark shutter the light should be completely obscured If light is still visible then the dark shutter needs attention 6 Check the dark current in diagnostics mode A high signal level gt 6mV 320nm indicates a problem with the detector board The calibration of this board is described in section 8 6 Service Fault 002 Unable to Locate Endstop Detector Unable to locate the 50nm endstop detector during wavelength calibration POWER ON TESTS SERUICE LOCATE EKDSTOP DETECTOR The Jenway 6310 uses an opto coupler to define the limit of movement for the grating This error occurs during the wavelength calibration procedure in the start up routine and is generated at the beginning of this procedure The grating is driven in a clockwise direction until the attached vane break

Jenway 6310 Spectrophotometer Service Manual

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