Shimadzu SPD-20A Service Manual
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Shimadzu SPD-20A Service Manual

Shimadzu SPD-20A Service Manual

Uv-vis detector for high performance liquid chromatograph
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228-90095F
UV-VIS DETECTOR
FOR
SHIMADZU HIGH PERFORMANCE
LIQUID CHROMATOGRAPH
SPD-20A/20AV
SPD-20A UFLC
SERVICE MANUAL
CAUTION !
 This service manual has been edited for those that have received service related
training.
 Those that have not been trained, should not use this manual.
SHIMADZU
Analytical & Measuring Instruments Division

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  • Page 1 228-90095F UV-VIS DETECTOR SHIMADZU HIGH PERFORMANCE LIQUID CHROMATOGRAPH SPD-20A/20AV SPD-20A UFLC SERVICE MANUAL CAUTION !  This service manual has been edited for those that have received service related training.  Those that have not been trained, should not use this manual.

  • Page 2: Table Of Contents

    Chapter 2 Specifications........................7 Chapter 3 Measurement systems....................7 Optical system..................................7 3.1.1 SPD-20AV Light path schematic..........................9 3.1.2 SPD-20A Light path schematic..........................10 Electrical system................................11 3.2.1 Signal processing circuits............................11 3.2.2 Lamp power supply circuits...........................12 Chapter 4 Parts configuration and function................13 Front side of instrument..............................13 Operation controls................................13...
  • Page 3 228-90095F Cleaning the temperature-controlled flow cell......................22 6.1.1 Simplified cleaning of temperature-controlled cell..................22 6.1.2 Disassembled cleaning of flow cell........................22 6.1.3 Assembling the flow cell............................22 6.1.4 Cleaning the quartz window..........................22 Adjusting the optical system............................24 6.3.1 Adjustment overview..............................24 6.3.2 Preparations.................................24 6.3.3 Optical adjustment jigs (targets)...........................25 6.3.4 Adjusting M1................................26 6.3.5...
  • Page 4 228-90095F 7.2.12 Changing the power supply input voltage....................44 7.2.13 The cautions at the time of linearity compensation [LINEAR CALIB] operation.........45 Chapter 8 Troubleshooting......................46 Using symptoms to identify the problem........................46 Using the error display to identify the problem....................46 Problems with electrical circuits and points to check..................47 8.3.1 SPD20-MAIN circuit board............................47 8.3.2...
  • Page 5 228-90095F Chapter 11 Optional parts.........................68 11.1 Parts list and diagrams for optional parts......................68 11.1.1 Temperature-controlled semi-micro cell (228-45605-94)................68 11.1.2 Inert cell (without temperature control) (228-33338-91)................68 11.1.3 Preparative cell (variable capacity, without temperature control).............69 11.2 Parts list and diagram for solvent recycle valve....................70 【Amendment history】...

  • Page 6: Chapter 1 Introduction

    Chapter 1 Introduction 1.1 Introduction This service manual applies to SPD-20A, SPD-20AV and SPD-20A UFLC detectors. The difference between the construction of 20A and 20AV models is the positioning of the tungsten (W) lamp, the W lamp power supply, and the mercury (Hg) lamp used for wavelength calibration.

  • Page 7: Chapter 2 Specifications

    228-90095F Chapter 2 Specifications Please read a see instruction manual. Chapter 3 Measurement systems 3.1 Optical system Figure 3.1 illustrates the instrument’s optical system. It is equipped with a D2 lamp and W lamp (model 20AV) for the light source. The angle of mirror M1 is used to choose between the two light sources.
  • Page 8 228-90095F cell, the respective light enters a silicon photodiodes (D1 and D2) where it is converted to an electrical signal that is proportional to the light intensity. The light entering the cells, or in other words, the wavelength being measured during analysis, is selected by changing the angle of the grating.

  • Page 9: Spd-20Av Light Path Schematic

    228-90095F 3.1.1 SPD-20AV Light path schematic SPD-20AV Light path schematic...

  • Page 10: Spd-20A Light Path Schematic

    228-90095F 3.1.2 SPD-20A Light path schematic SPD-20A Light path schematic...

  • Page 11: Electrical System

    228-90095F 3.2 Electrical system The electrical system can be separated into four major sections, the signal processing circuits, the light source power supply circuits, the drive circuits (grating, filters and mirrors), and key board (operator controls). 3.2.1 Signal processing circuits After passing through the measurement and reference cells, the respective light beams (intensity) I and I...

  • Page 12: Lamp Power Supply Circuits

    228-90095F 3.2.2 Lamp power supply circuits The deuterium lamp (D2 lamp) is controlled via a fixed current circuit to provide a stable light source that is not affected by power fluctuations. In addition, this circuit has a fixed discharge current for automatically turning on the lamp. A high voltage is applied and the filament is heated until the lamp is illuminated.

  • Page 13: Chapter 4 Parts Configuration And Function

    228-90095F Chapter 4 Parts configuration and function 4.1 Front side of instrument Please read a see instruction manual. 4.2 Operation controls Please read a see instruction manual. 4.3 Inside the front cover, and its top and left sides Please read a see instruction manual. 4.4 Right and bottom sides Please read a see instruction manual.

  • Page 14: Inside The Optical Unit

    228-90095F 4.7 Inside the optical unit 4.7.1 Illustration of optical unit interior Optical unit interior 4.7.2 List of primary internal parts for optical unit List of primary internal parts for optical unit Name Remarks Name Remarks Grating ASSY 228-15257-95 Hg lamp ASSY 228-38214-96 M2 mirror ASSY 228-23014-91...

  • Page 15: Temperature-Controlled Flow Cell Drawing And Component Parts List

    228-90095F 4.8 Temperature-controlled flow cell drawing and component parts list 4.8.1 Assembly drawing for temperature-controlled flow cell (Standard: 228-37440-94, Semi-micro: 228-45605-94) Reference: Procedure for tightening lens fixing screws (part 16) (factory method) 1) Verify that the lens surface fits completely inside the counterbore in the housing.

  • Page 16: Component Parts List For Temperature-Controlled Flow Cell Assembly

    228-90095F 4.8.2 Component parts list for temperature-controlled flow cell assembly Ref. Stan Semi- Part Name Part Number Remarks dard micro Semi micro cell housing 228-48646-01 Cell housing 228-41992-01 Cell holder 228-37442 Cell holder 228-41031 Cell plate 228-38465-02 Cell plate 228-41038 Inner cover, cell 228-37445 Inner cover, semi micro cell...

  • Page 17: Chapter 5 Other Functions

    228-90095F Chapter 5 Other functions 5.1 List of auxiliary functions This instrument includes the following auxiliary functions. Settings can be changed in sequence by pressing the “Func” key for each function group. 5.1.1 Parameter group Name Function Key(s) LAMBDA Sets wavelength being measured Numeric keypad RESPONSE Sets response speed...

  • Page 18: List Of Vp Functions

    228-90095F 5.1.3 System group Name Function Key(s) LOCAL Sets whether to control from system controller or from local Numeric keypad unit LINK ADRS Sets address when controlling from system controller Numeric keypad KEY CLOSE Blocks input via keys Enter BRIGHTNESS Adjusts contrast level of display Numeric keypad EXT-S...
  • Page 19 228-90095F 5.2.3 Validation Support group Name Function Key(s) DATE Displays or enters date tenkey TIME Displays or enters current time tenkey AUTO CHECK Checks memory, wavelength accuracy and light intensity Enter LEAK SENSOR Checks leak sensor Enter TEST 5.2.4 Calibration Support group Name Function Key(s)

  • Page 20: List Of Factory Functions

    228-90095F 5.3 List of factory functions If this instrument is started up in “special mode” (power switch is turned on while pressing the “Func” key), then the factory function group is added to the available auxiliary functions. Factory functions are listed below. * Functions indicated with an asterisk (*) will only display at the factory.
  • Page 21 228-90095F Displays leak sensor room temperature LEAK ROOM display only Normal value: (ambient + 5C) x 10 Corrects temp-controlled flow cell at 50C tenkey CELL T COR Temp difference for 50C measurement is entered (Step 0.1C) Sets temp-controlled flow cell PID parameter PID P tenkey (Do not change this control parameter)

  • Page 22: Chapter 6 Maintenance And Adjustments

    228-90095F Chapter 6 Maintenance and adjustments 6.1 Cleaning the temperature-controlled flow cell 6.1.1 Simplified cleaning of temperature-controlled cell Please read a see instruction manual. 6.1.2 Disassembled cleaning of flow cell Please read a see instruction manual. 6.1.3 Assembling the flow cell Please read a see instruction manual.
  • Page 23 228-90095F...

  • Page 24: Adjusting The Optical System

    6.3 Adjusting the optical system 6.3.1 Adjustment overview Adjustment of models SPD-20A (including -20A UFLC.) /SPD-20AV involves adjusting the D2 lamp, mirror M1, W lamp (model SPD-20AV only), Hg lamp, filter (model SPD-20AV only), slit, mirror M2, grating, mirror M3 and cell, as shown below.

  • Page 25: Optical Adjustment Jigs (Targets)

    Delivered product, custom product Jig for M2 228-34949-91 Delivered product, stocked Jig for M3, SPD-20A 228-46069-91 Delivered product, newly stocked * Some gratings have a larger width due to a variation during processing (cutting). Use the jig for gratings with a large width. In most cases, 221-94572-91 for regular size can be used.

  • Page 26: Adjusting M1

    228-90095F 6.3.4 Adjusting M1 > In order to make it factory mode (1) Turn the power on while pressing the “func” key. > push func →Factory→and Set λ＝0nm (2) Turn the D2 lamp ON. (3) Attach the M1 and M2 jigs. (4) (For model SPD-20AV, use a clip or other means to secure the lever pin attached to the M1 assembly and the stopper pin.

  • Page 27: Adjusting Slit Position

    228-90095F 6.3.5 Adjusting slit position Attach the slit assembly and adjust it in the X-direction so the image center (the brightest portion) is projected on the slit, then secure the slit assembly.

  • Page 28: Adjusting W Lamp Stopper Screw

    228-90095F 6.3.6 Adjusting W lamp stopper screw (1) Remove the clips used to secure the M1 assembly. (2) Turn the W lamp on. (3) Loosen the nut on the M1 assembly, adjust the stopper screw so the image projected on the slit assembly is horizontally centered and retighten the nut.

  • Page 29: Adjusting M2

    228-90095F 6.3.7 Adjusting M2 (1) Remove the M2 jig and attach the M2 assembly. Attach the M3 jig to assembly M3. Press the function key and set “Z WAVE”, in the factory group, to 3. (Wavelength still = 0nm) (2) Roughly adjust the rotation of M2 and GR so the 0-order light from M2 passes via GR and is laterally centered on M3 (within Φ10mm circle).

  • Page 30: Adjusting The Grating

    228-90095F 6.3.8 Adjusting the grating > It . Z-wave =3.λ=0nm continues (1) Rotate the grating in direction “A” shown in the figure and look at the spectrum projected on M3. Loosen the grating lock screw and rotate the grating in direction “B” in the figure. Secure the grating in location when the spectrum becomes horizontal.

  • Page 31: Adjusting M3

    228-90095F 6.3.9 Adjusting M3 (1) Attach the cell jig. (2) Adjust the rotation and elevation angle of the M3 assembly so the 0-order light image hits the center of the target on the cell jig. (3) Remove the M1 jig, attach a dummy cell, and double check that the long narrow 0-order light image is over the cell hole.

  • Page 32: Fine Adjustment Of Mirror M1

    228-90095F 6.3.10 Fine adjustment of mirror M1 (1) Light up the D2 lamp. (2) Direct the Mirror M1 ASSY to the D2 lamp. Jig for fine (3) Attach the jig for fine adjustment of M1 on adjustment of M1 mirror M1. (4) Set the pin of the lever (rotating table) where the mirror M1 ASSY is mounted and the stopper pin on the lamp housing using a...
  • Page 33 228-90095F (3) Set ”FILTER POSI” to “4” and check that the second-order light cut-filter covers the entire front surface of the slit. (4) Set ”FILTER POSI” to “7” and check that the deep green filter covers the entire front surface of the slit.

  • Page 34: Adjusting The Hg Lamp

    228-90095F 6.3.12 Adjusting the Hg lamp (Model SPD-20A) (1) 4 is inputted into LAMP in FACTORY mode, and only Hg lamp is made to turn on. (2) 2 is inputted into LAMP POSI and a lamp change mirror is changed to the direction of Hg (V is W lamp) lamp.
  • Page 35 228-90095F (Model SPD-20AV) The Hg lamp will project multiple images onto the slit from multiple reflections in the VIS filter, as shown below. Adjust the Hg lamp by moving it in the direction of the arrow shown below, until the brightest Hg lamp image hits the center of the monochromator.

  • Page 36: Chapter 7 Additional Explanations

    Chapter 7 Additional explanations This service manual refers to special mode functions (power is turned on while pressing the “Func” key), but this mode is reserved for Shimadzu service engineers. To avoid confusion, do not reveal this mode to customers.

  • Page 37: Changing The Gain Of Operation Amplifier

    228-90095F 7.1.3 Changing the gain of operation amplifier After the mirror M1 is fine-adjusted as described in Amendment F in this Service Manual, optical energy may become saturated. Check the energy after adjustment. If the energy is over the standard level, lower the gain of the operational amplifier by the procedure described below.
  • Page 38 228-90095F  Upper limit of the light intensity when the identification no. is “228-42031B” Cell When using a standard cell 2200 mV 2200 mV If the value is over the upper limit, the operational When using a semi-micro 1400 mV 2200 mV amplifier needs to be cell...
  • Page 39 228-90095F 7.1.3.3 Changing the gain of pre-amplifier (PB-1 ASSY) If the light intensity is over the standard level after the optical system is adjusted, lower the gain of the pre-amplifier by 7 % by the procedure described below. ＊ The lamp and optical elements (e.g. mirror, grating) of instruments where the pre-amplifier has been modified may have to be replaced in several months to several years depending on use frequency.

  • Page 40: Additional Vp Functions

    None of the log records can be deleted. 7.2.4 Date and time Each log records the date and time of each event, but model SPD-20A does not have a backup clock, so the expression of date and time may differ depending on the system status.

  • Page 41: Password

    228-90095F time settings have not been entered, dates for log entries will use total system usage time values, expressed in the form T000001 (total usage time of one hour) 7.2.5 Password Instrument calibration and hardware related settings are performed using the calibration support group functions.

  • Page 42: Compatibility Of D2 Lamps With Previous Models

    * Note the guideline for initial replacement is 2000 hours. 7.2.10 Voltage at data recorder output terminal The recorder output terminal voltage for model SPD-20A is 10 mV. If the recorder input full scale is 1 mV, use one of the following methods to change the full scale level.

  • Page 43: How To Update The Rom Version

    228-90095F 7.2.11 How to update the ROM version (Jigs required for update) OPT-232C Adapter P/N 228-35480-91 ② RS-232C Cable ③ Optical cable ④ Computer (with RS-232C connection capability) (Procedure) ① Connect the instrument to be updated to the computer via the OPT-232C adapter and start the computer.

  • Page 44: Changing The Power Supply Input Voltage

    228-90095F 7.2.12 Changing the power supply input voltage On SPD-20A and SPD-20AV models, the power supply input voltage is switched by turning a rotary power supply input voltage switch to the desired input voltage. However, always disconnect the power supply plug before performing this procedure.

  • Page 45: The Cautions At The Time Of Linearity Compensation [Linear Calib] Operation

    228-90095F 7.2.13 The cautions at the time of linearity compensation [LINEAR CALIB] operation If CE key is pushed suddenly and linearity compensation is canceled in the middle of operation of linearity compensation, while the energy by the side of a rewriting rate and a sample had also displayed 0mV on the unusual parameter, the output according to energy will become impossible.

  • Page 46: Chapter 8 Troubleshooting

    228-90095F Chapter 8 Troubleshooting 8.1 Using symptoms to identify the problem Please read a see instruction manual. 8.2 Using the error display to identify the problem Error Message Cause and remedial measure Error Type ROM FAILURE ROM Sum error → replace PCB Fatal RAM FAILURE RAM Matching check error→...

  • Page 47: Problems With Electrical Circuits And Points To Check

    228-90095F 8.3 Problems with electrical circuits and points to check Points to check on the SPD20-MAIN and SPD20-PWR (power supply) circuit boards are summarized in the tables below. Please use them when experiencing problems with printed circuit boards. 8.3.1 SPD20-MAIN circuit board 8.3.1.1 Reference voltages Item Allowable range...
  • Page 48 228-90095F 8.3.1.5 Motor drive and home position detection circuits Item Points to check R/C around M2, M3, M4, Grating motor does not turn (grating moves) M8, M27, M28, J8, RA8 -- RA10, M19, M2/4/8 Grating motor does not turn (no display) M14, M21, J4 Motor drive...

  • Page 49: Spd20-Pwr(Power) Circuit Board

    228-90095F 8.3.1.11 EEPROM writing and NMI function circuits Item Points to check NOT PROTECTED occurs R/C around M29, M15, M29 NMI, EEPROM Value settings are not recorded EEPROM 8.3.1.12 HDLC transmission functions (optional) circuit Item Points to check Cannot communicate with external M14, M21, M26, J14, J15...

  • Page 50: Chapter 9 Electrical Circuits

    228-90095F Chapter 9 Electrical circuits 9.1 PCB diagram, SPD-20 cables...

  • Page 51: Circuit Diagram, Lc20-Key

    228-90095F 9.2 Circuit diagram, LC20-KEY...

  • Page 52: Circuit Diagram, Spd20-Main

    228-90095F 9.3 Circuit diagram, SPD20-MAIN 9.3.1 Circuit diagram ,SPD20-MAIN 1/8 9.3.2...

  • Page 53: Circuit Diagram, Spd20-Main 2/8

    228-90095F 9.3.2 Circuit diagram, SPD20-MAIN 2/8...

  • Page 54: Circuit Diagram, Spd20-Main 3/8

    228-90095F 9.3.3 Circuit diagram, SPD20-MAIN 3/8...

  • Page 55: Circuit Diagram, Spd20-Main 4/8

    228-90095F 9.3.4 Circuit diagram, SPD20-MAIN 4/8...

  • Page 56: Circuit Diagram, Spd20-Main 5/8

    228-90095F 9.3.5 Circuit diagram, SPD20-MAIN 5/8...

  • Page 57: Circuit Diagram, Spd20-Main 6/8

    228-90095F 9.3.6 Circuit diagram, SPD20-MAIN 6/8...

  • Page 58: Circuit Diagram, Spd20-Main 7/8

    228-90095F 9.3.7 Circuit diagram, SPD20-MAIN 7/8...

  • Page 59: Circuit Diagram, Spd20-Main 8/8

    228-90095F 9.3.8 Circuit diagram, SPD20-MAIN 8/8...

  • Page 60: Circuit Diagram, Spd- Power

    228-90095F 9.4 Circuit diagram, SPD- POWER 9.4.1 Circuit diagram ,SPD20-PWR 1/5...

  • Page 61: Circuit Diagram, Spd- Power 2/5

    228-90095F 9.4.2 Circuit diagram, SPD- POWER 2/5...

  • Page 62: Circuit Diagram, Spd- Power 3/5

    228-90095F 9.4.3 Circuit diagram, SPD- POWER 3/5...

  • Page 63: Circuit Diagram, Spd- Power 4/5

    228-90095F 9.4.4 Circuit diagram, SPD- POWER 4/5...

  • Page 64: Circuit Diagram, Spd- Power 5/5

    228-90095F 9.4.5 Circuit diagram, SPD- POWER 5/5...

  • Page 65: Circuit Diagram, Pb-1 Assy

    228-90095F 9.5 Circuit diagram, PB-1 ASSY...

  • Page 66: Parts Lists

    UFLC models. High-grade gratings can be used in instruments that include the new type of printed circuit board, SPD-20-MAIN ASSY (228-45601-94). -order light cut filter (for SPD-20A including Filter ASSY (UV) 228-42008-91 UFLC model)

  • Page 67: Electrical Parts List

    228-90095F 10.4 Electrical parts list Part name Part number Remarks Fuse, 4AT, 250V 072-02004-22 100-120V fuse Fuse, 3.15AT, 250V 072-02004-21 220-240V fuse Main circuit board Without EEPROM. PCB ASSY, 228-45601-92 SE and RE output is max 3.5 V. SPD-20-MAIN(Old) Main circuit board Without EEPROM. PCB ASSY, 228-45601-94 SE and RE output is max 5 V.

  • Page 68: Chapter 11 Optional Parts

    228-90095F Chapter 11 Optional parts 11.1 Parts list and diagrams for optional parts 11.1.1 Temperature-controlled semi-micro cell (228-45605-94) Refer to Sections 4.8.1 and 4.8.2 regarding the temperature-controlled flow cell assembly 11.1.2 Inert cell (without temperature control) (228-33338-91) Part Number Part Name Part Number Part Name 228-32982...

  • Page 69: Preparative Cell (Variable Capacity, Without Temperature Control)

    228-90095F 11.1.3 Preparative cell (variable capacity, without temperature control) (228-23405-91(0.5)/92(0.2)/93(0.1)) Part Number Part Name 228-25287-91 Cell housing ASSY, prep 228-25287-92 Cell housing ASSY (0.5) 228-23421 Cell holder 228-23423 Plate, cell 228-23424 Cover, cell 228-14520 Cell fixing screw 228-21383 Gasket, PTFE 228-21384-02 Cell window 228-21385-...

  • Page 70: Parts List And Diagram For Solvent Recycle Valve

    228-90095F 11.2 Parts list and diagram for solvent recycle valve (228-35310-91 45080-91) Part number Part name 228-39732 Plate, SV 228-35364-91 Tube, inlet assembly 228-35365-91 Tube, outlet assembly 228-18565 Nut, male PEEK 228-35454-91 Valve, MRV 3-way 020-37054 Screw, SS truss head M4 x 8 020-46536 Screw, SS sems P3 M3 x 10 072-60319-01...

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