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SERVICE MANUAL

1. OOOOOOOOOO 42 41 Figure 3 15 Layout of UV 4802 Inside Bottom View Layout _ 24 Figure 3 16 Layout of UV 4802 Top View xr LO 10 LO Figure 3 17 Layout of UV 4802 Back View Layout 4 Optical System The optical system of SQ series Spectrophotometers are adopted littrow type with 1200lines mm grating UV 2800 UV 2802 UV 2802PC UV 2802S UV 2802PCS are Single Beam the optical system schematic diagram are shown in 4 1 UV 3802 and UV 4802 are Split Beam and Double Beam the optical system schematic diagram are shown in 4 2 and 4 3 4 1 Incidence of Light The neutral light coming from the Tungsten lamp or the Deuterium lamp is focused at the entrance slit of the monochrometer by the concave mirror 4 2 Dispersion of Light The light passed through the entrance slit reflected by the collimating mirror to analytical grating The light is spectrally dispersed by the grating and reflected collimating mirror to the exit slit 4 3 Exit of Light 4 3 1 Exit of the Single Beam UV 2800 UV 2802 S UV 2802PC S The light from the exit slit through the condenser lens focused on the sample continue pass through the sample the light finally to the photodetector Shown in Figure 4 1 4 3 2 Exit of the Split Beam UV 3802 From the exit slit the light was separated two path by the mirror the
2. 7629 Check Dark Current nup Paene 7 6 6 Check Energy PIOMl io e eher Erreur ER ER Eb ot es Order NO EIstor UV 29800 icis ipso Order NO List UV 2802 2802 Order NO List of UV 2802S 2802 35 Order Order NO List of 4802 68 69 70 71 71 75 77 78 91 81 81 82 82 82 1 Introduction The SQ series Spectrophotometer are available in five models model UV 2800 UV 2802 28025 UV 3802 and UV 4802 This series products cover the Ultra Violet and Visible wavelength regions from 190nm to1100nm The analytical grating system has 1200 grooves mm for high spectral dispersion The models UV 2800 UV 2802 UV 2802PC 28025 and UV 2802PCS are Single Beam the model UV 3802 is Split Beam and the model UV 4802 is Double Beam The SQ series Spectrophotometer used Double CPU RTOS High Precision A D and 320x240 dot matrix LCD Display 320X240 All of these made the instruments have excellent performance and good stability Figure 1 1 Model UV 2800 Figure 1 2 Model UV 2802 UV 2802S Figure 1 3 Model UV 2802PC UV
3. enda dod voc 36 5 1 2 Power Distributing E eo nro e etae RON UN eq iere 37 5 2 Control and Drive 38 92 1 Mal Cr UE D 41 922 NING DE 9 2 9 JTansterng PGB 5 3 Sampling and Signal Processing 5 9S0 CD www 5 9 2 D MEDIE 9 9 ld Ve PCB Se d taxe Trouble bdad eta ani aae IAMS ON aso 0 2 3 6 3 Memory check 6 4 Printer cneck 6 5 Filter positioning 2 2 2 2 2 4 6 6 Light source positioning 6 7 Auto cell positioning 6 8 Slit positioning 202 2 27202022 2 2 0 9 Search 656 eddie dete ebbe eet test 6 10 Please restart 0 2 2 2 20 22121 6 11 Battery low
4. Trouble Shooting Y lapsa ula 46 on pin 1 of J6 on 2 2 Replace 2882625 SST8 411 128A Y 1 Solving the wiring of J5 AC 5 5V between pin 1 2 of Y on PCB SST8 411 128A N J5 on PCB SST8 411 128A 2 Replace transformer OK Y AC 250V b x in 1 2 etween 1 ee oe 814 095 between pin 3 5 2 transformer SST8 411 128A OK Y Y Y 3 85V 3of JJ on PCB V Replace PCB 5518 411 128 OK 5518 411 128 DC 3 85 on pin 2 of CZ7 SONING MIS SST8 412 113 OK 5518 411 128 Y Replace 5518 412 113 59 Trouble Shooting 6 3 Memory check failed Check memory failed Y Y 1 Replug the IC U4 on Main CPU board 2 Replace the IC U4 on Main CPU board 6 4 Printer check failed Printer check failed Printer power on N Power on the printer Y Th ble bet int rt e cable between printer po and the printer is OK 61 ROPIACE CADIE Y The wiring the CZ5 PCB SST8 412 113 is OK Y 1 Replace IC 8255 of U17 on PCB SST8 412 113 2 Replace the PCB 5518 412 113 N Solving the wiring
5. 41 3d n 0 Figure 5 6 Power Supply schematic diagram of UV 2800 UV 2802 UV 2802PC UV 2802S UV 2802PCS 36 Electronic System 4 2 35 D oun 5 89 838 2 O ze 438 E E gt RY mi Q Q Q E A A o EP ER 2 Slave CPU PCB a DC 5V A s A 5 z 2 Em 5 2 5 2 x gu dg E 2 a A A A AA AA A A gt u gt gt gt B ae 5 14 xp ox s s guo Qo lt lt lt Power Supply Board Power Distribute PCB gt gt gt Z gt A gt o al S N N s s lt lt lt lt lt lt A A Transformer Switch Power Supply A A gt gt ON es gt gt 5 5 lt lt Figure 5 7 Power Supply
6. Electronic System Transform or Wht Brw Org Red 57841 128A Wavelength Motor Filter Moter ht Change Limit Switch Wavelength Photo coupler PCB SST8 415 001 D Filter Photo coupler PCB SST8 417 101 Figure 5 4 Connection of UV 3802 J9 E S ug E 5 s 9 Ol Sl x LCD CNI Keypad e Electronic System 7 NI UNIG J1 q 100 517 8155 0 291 415 W94 M qs 1431 TOT LTE SISS gOd e dnoo ojouq 29114 IO3OJA Uo AP M tL ERES C PPP oem a ZIOISISUBLT 9 Poy nd m lt E B 95801 e 5 lt 1101518001 2 ue B5 ue 50009 5 Bis 52 2 9 lt en B gt lt as ei el a 6 s z 2 5 E 9 2 1 5 of 5 c f vr 42 Sh 58 2 Pin 4 557 Mp 1 4 eg
7. 9IdUES 0 SUO 2 Figure 4 2 Optical System schematic diagram of UV 3802 290 Suo Suo 15 JOMIN josuopuoo Jesuepuoj Suo Jesuspuoy 115 suo suo Jesuepuoo 99991994 jesuepuo Figure 4 3 Optical System schematic diagram of UV 4802 2 30 5 Electronic System Fuse Power Supply Socket Power Switch 115V 230 Selector lt 3EGGI 3 R220 22C 11D 121 22 1 ES O0 mmm Red 3 2 Brw 4508A e E NES P BE 4 5 Org Yel Grn 4 bm OND Switch Power B MB Red IL Wht N lt wnt 5 p 55 8 11 130 SST8 413 104A C12V V Wr gt p 5V my 9 e PCB SST8 412 113 CZ 72 55 8 417 100 SST8412 314A E 24 M GI n HN e lt O ADDEF 5 5 9 518 SST8 414 103 PCB SST8 417 102 D g o 9 gl e zo CN2 5 Bl a NE
8. 412 113 OK Y The voltage level on pin 2 of J8 on PCB SST8 412 113 changes within 1 Solving the wiring from 0 3 2V during the filter positioning auto cell holder to auto cell holder connector Y 2 Solving the wiring from 1 Solving the wiring from auto cell auto cell holder connector holder to auto cell holder connector J3 on PCB SST8 412 113 2 Solving the wiring from auto cell 3 Replace auto cell holder holder connector to J8 on PCB Y motor 5518 412 113 4 Replace PCB 3 Replace auto cell holder photo 518 412 113 coupler Refer 6 18 lt 1 Replace IC 8255 017 on PCB SST8 412 113 lt 2 Replace ST8 412 113 6 8 Slit check failed Only for UV 2802S UV 2802PCS Slit positioning failed DC 12 on pin 5 of J7 C NOTE N gt PCB SST8 414 103 104 Y v 1 2V on pin 3 of J11 on 1 Solving the wiring of slit PCB SST8 414 104 OK motor Y 2 Solving the wiring of CN1 The voltage 201 oed e 11 on SST8 414 104 3 Replace PCB SST8 414 104 4 slit motor changes within 0 3 21 during 5 Replace SST8 412 113 the filter positio
9. gt 5556 al gt E 2 5 amp SS gt 2 _ ED 2 HEEL ze PA VST AOST HS asny 5 gt 2 5 x 3 8 24 INO lt EZD TET SA szo CO oao sit IojsnIpy 158400 407 lt pmu 8f cf 22 01n V Figure 5 5 Connection of UV 4802 235 Electronic System 5 1 Power Supply System uses oq SOdCOSC AQ ISCOSC AQ AJUO 30N 1481 a Bed A00ZI OV AS gt Y 2 ATI 8 2 8 AcI lt E e AOCC AO0TI OV 1 lt A gt gt 9 3 dOd AG Od 2 E 2 Pulduy po 1 4 1010 1 1 m AOST OV may 7f 1 y gt 4221 54 25 40057 OV 5 amp azo D xcov a 2914 gt uasduny Ae TI Od 2 tay 2 AOCC AO1I OV coo 3 lt m Q 2 s 5
10. 0 2 42 1 1 1 7 4 6 12 Save or load file 6 13 Get dark current for long 6 14 No backlight on LCD 6 15 Backlight OK but nothing display on LCD Display 6 16 Energy low warning after 6 17 Energy too low 6 18 No DC 12V 5518 412 113 Mallitenanee a T Working 5504 eut tea eoa e ovo Een 7 2 Replace Tungsten 7 3 Replace Deuterium 7 4 Replace Memory Upgrade TITO euo prep UE 7 6 Check 2 weenie 7 6 2 Check Wavelength 7 6 ecce PI M 7 6 4 Check Absorbance
11. 2 amp S E NORMEN E S st 2 o 8 8 AMBHE o 5 5 Figure 5 1 Connection of UV 2800 Electronic System Transformor 5 Wht Brw Org Red Yel Gm 19 gt ke gt e nm 5 5 S amp 5 B 5 z amp 3 7 o S 5 9 5 al x LCD Keypad zB mics Power Supply Socket Power Switch 115V 230 Selector lt 3EGGI 2 R220 22C 11D 121 22 1 ENS 9 NE Red 3 2 Brw 4508A Transformar gt 4 5 Oe Wht Brw Org Red zm Yel Gm GND b M Yel Gm Dii C C me m BE E Wht 71 5 PCB __ Yel Gm 5 5578 411 128A P Wht SST8 411 130A SST8 413 104A 12 i 5V mro fm a PCB SST8 412 113 EZ 5 CZ2 E Q S 2 5 z 9 21 2 5518 417 100 SST amp 412
12. N Refer 6 5 Y Light source positioning gt Refer 6 6 Y Y Replace tungsten lamp Vis area or deuterium lamp UV area Note If measuring at less than 200nm or more than 1000 is possible to appear Energy low warning zs 6 17 Energy too low warning Energy too low Anything block off the beam in the sample compartment Trouble Shooting N Y The wavelength at UV area N Y gt Take it away por Used quartz cuvette N Y The reference or sample solution have high absorbency Y against air Y Y The reference or sample Dilute reference or sample lt lt Y solution have high lt solution against air N gt Tungsten lamp Deuterium lamp on N N Y Y Refer 6 1 Refer 6 2 i Y Filter positioning OK N Refer 6 5 Y Light 5 itioni ight source positioning OK N Refer 6 6 Y Y Replace tungsten lamp Vis area or deuterium lamp UV area DC 12 on 1 of CZ1 on 5518 412 113 DC 12 on 1 of J4 on PCB SST8 411 130A OK N DC 12V on switch
13. Note is recommended to connect the M501 to printer with cable after both are powered on 60 6 5 Filter check failed Filter positioning failed Trouble Shooting Filter motor works OK Y DC 12 on pin 5 of J5 on PCB SST8 414 103 104 Y DC 1 2 on pin 3 of J9 on PCB OK Y SST8 414 103 104 OK Y The voltage ae on pin 2 of J9 on PCB SST8 414 103 changes within 3 2V during the filter positioning Y 1 Solving Re wine of filter motor 2 Solving the wiring of CN2 on PCB SST8 414 103 104 3 Replace PCB 5518 414 103 104 4 Replace filter motor 5 Replace PCB 5518 412 113 1 Solving Win of CN1 on PCB SST8 414 103 104 2 Replace PCB 5518 414 103 104 3 Replace SST8 412 113 Y DC 12 on pin 1 of CZ1 on PCB SST8 412 113 OK N Y Refer 6 18 1 Solving the wiring of J9 on PCB SST8 414 103 104 2 Replace photo coupler 1 Solving the wiring CN1 on PCB SST8 414 103 104 to PCB SST8 412 113 2 Replace PCB 5518 414 103 104 1 Solving wiring of CN2 on PCB SST8 414 103 104 2 Replace PCB 5518 414 103 104 3 Replace 5518 412 113 61 6 6 Light source check failed Light Source positioning failed Y Y DC 5 on pin 3 of
14. QARTS gt o 4 pue OJU20UO A 14871 Figure 5 11 Working Principle of UV 3802 Electronic System coc Sa aot 5592024 A A gt eusrs pue q V Y i Y gt 1487 Jjo uo wn L Iop oH 14811 YMS ALIS TON 199125 pue Sur dureg Y Y Y Y lt 5 pue Sur dureg dunes P OJU20UO N 1987 Figure 5 12 Working Principle of UV 4802 5 2 1 Main CPU PCB SST8 412 113 The layout of the main CPU PCB is shown in figure 5 13 C FT 4 x Electronic System 2122213 J af E o ELLLELLELELLLLLLE E i 4 mg 1 i a ALLE RE i
15. detector to receive the transmitted light and convert it to an electrical signal the slave CPU on Slave CPU control to amplifier the electrical signal and convert it to be digital signal send it to main CPU 4 The main CPU gets the digital signal process and outputs the results display print or send to PC and so on 40 Electronic System ceo Sa aot pediosy A A A 5 2431 pue qv INOS 1487 TA edures oiny or 14817 109125 juour pue gt a OJU2OUO N 19871 Figure 5 10 Working Principle of UV 2800 UV 2802 S 41 Electronic System Ke dsiqq Ct C Sd YT pedioy 5592014 091 pue 6 215 lt o31uo 90106 1937 Jjo uo or 148171 YAMS TOL 129125 pue
16. 5 21 e s Sls 8 NE E Ol el Eia J1 I N s N N gt gt LCD Oo _ 5 22 5 a 5 S S x S SST8 414 104 al 2 s el a 8 CN2 Ip 5 N p gt 2 e 5 S wl A gt al 3 al 5 O S m al D 8 1 5 E 5 8 Only for UV 2802S 8 8 s s 34 8 5 e s 5 gt 8 EO 2 8 5 5 Z El al 21213 Figure 5 3 Connection of UV 2802S UV 2802PCS Nm Power Supply Socket Power Switch 115V 230 Selector lt 3EGGI 2 R220 22C 11D 121 22 1 baie cy 4 ES 3 2 Bw 4508A gt Po Bk 4 5 Org 5T Yel Gm GND Eu Scam T 60B Red a P DE wn O gt a Wht 55 8 411 130 SST8 413 104A 12 m 12V V n COM 45V 17 Lon gQ PCB SST8 412 113 71 C77 Ce E SST8 417 100 SST8 412 314A gt 5 CZ6 gt C265 a 11 NN 8 8 8 8 5 8 5 5 E 5 31 lt 8 SST8 414 104 i a 5 1 sq CN2 3 Oj o
17. CN CN CN CN Figure 3 10 Layout of UV 3802 Inside Top View 17 43 40 Pekel 0 CN 41 OOOOOOOOOOOOOOO Figure 3 11 Layout of UV 3802 Inside Bottom View Layout 18 Figure 3 12 Layout of UV 3802 Top View Layout CS LS 09 6 Figure 3 13 Layout of UV 3802 Back View 3 4 Layout of UV 4802 1 Cooling Fan 3 Tungsten Lamp W Lamp 5 D2 W Power Supply PCB 7 Transformer 9 Lamp Limit Switch 11 13 15 17 19 21 23 25 27 29 31 33 95 37 39 41 43 45 47 49 53 55 Deuterium Lamp D2 lamp Monochromator Sine Bar Movable Block Gear Photo coupler1 Wavelength Auto cell Changer Connector Photo coupler2 Filter Shield Cover Condenser Lens Light Distribute Room Slave
18. JL 41 cal Electronic System Pin 7 GND J17 To Program Switch for Software Update Pin 1 5V 5V instrument is working on Test or it working on Program Mode Pin 2 GND J18 To Contrast Adjustor Pin 1 DC 20 5V Pin 2 DC 5 20 5V contrast adjust Pin 3 DC 5V CN1 To Drive PCB Pin 1 4 Control slit step motor Pin 5 Slit Photo coupler signal Pin 6 Wavelength Photo coupler and limit switch signal Pin 7 Filter Photo coupler signal Pin 8 Lamp limit switch signal Pin 9 11 13 15 GND Pin 10 12 14 16 DC 12V CN2 To Drive PCB Pin 1 GND Pin 2 DC 5V Pin 3 6 Control wavelength step motor Pin 7 10 Control filter step motor Pin 11 14 Control lamp Change step motor 5 2 2 Drive PCB SST8 414 103 or SST8 414 104 The layout of the Drive PCB is shown in figure 5 14 5 15 and 5 16 Wu a a ii i il 1 ii Figure 5 14 Layout UV 2800 Drive PCB 46 an 60009 Figure 5 16 Layout of UV 2802 UV 2802PC UV 3802 UV 4802 Drive PCB The sockets description of the Drive PCB as follow CN1 From Main CPU PCB Pin 1 4 Control slit step motor Pin 5 Slit Photo coupler signal Pin 6 Wavelength Photo coupler and limit switch signal Pin 7 Filter Photo coupler signal Pin 8 Lamp limit switch signal 9 11 13 15 GND Pin 10 12 14 16 DC 12V CN2 From Main CPU PCB Pin 1 GND
19. 2802PCS Figure 1 4 Model UV 3802 Introduction Figure 1 5 Model UV 4802 Specifications 2 Specifications Byez 6 0 O8cX00VX0C9 25 54 0060 20070 26666 0 V0 0 1 002 0 2001 05 uugoresuuozcQo 19 5 05 pZLOSAWG 002 002 91545 002 uep yids 3 Layout 3 1 Layout of UV 2800 1 Cooling Fan 3 Tungsten Lamp W Lamp 5 D2 W Power Supply PCB 7 Transformer 9 Lamp Limit Switch 11 Deuterium Lamp D2 lamp 13 Monochromator 15 Movable Nut 17 Sine Bar 19 Motor2 Wavelength 21 Photo couple1 Wavelength 23 Shield Cover 25 Motor3 Filter 27 Condenser Lens 29 Sample Compartment 31 Lamp Source Room 33 Light Blocking Plate 35 Power Distributing PCB 37 Main CPU PCB 39 LCD Screen 320x240 dots 41 Sample Compartment Lid 43 Upper case 45 Viewing Hole 47 232 Serial Port Interface 49 Power Switch 51 110V 220V Selector Heat Radiator Motor1 Lamp Change Mirror1 Lam
20. 7 Control amplifier multiple from Slave CPU PCB The amplifier multiple of UV 2800 UV 2802 S Amplifier PCB as follow Note 1 0 Logiclow 1 Logic high 5V The amplifier multiple of UV 3802 Amplifier PCB as follow Pin 3 Pin4 Pin 5 Pin 6 Pin 7 multiple EM 4 qo Note 1 0 Logiclow 1 Logic high 5V 5 NE Electronic System LJ gt LN Lej 4 Figure 5 19 Layout of UV 4802 Amplifier The sockets description of the Amplifier PCB of UV 4802 as follow J1 From Power Distributing PCB Pin 1 DC 9V Pin 2 GND Pin 3 DC 9V J2 From Slave CPU PCB Pin 1 2 3 5 7 9 11 13 15 GND Pin 4 Analog signal from pin 6 of 7 Pin 16 DC 5 Pin 6 8 10 12 14 Control amplifier multiple from Slave CPU PCB The amplifier multiple of UV 4802 Amplifier PCB as follow Pin 6 Pin 8 Pin 10 Pin 12 Pin 14 multiple Note 1 0 Logic low 1 Logic high 5V 52 Electronic System 2 Slave Amplifier 413 103A or SST8 413 104A Figure 5 20 Layout of UV 3802 Slave Amplifier The sockets description of the slave Amplifier PCB of UV 3802 as follow J1 From Power Distributing PCB Pin 1 DC 9V Pin 2 GND Pin 3 DC 9V J2 From Slave CPU PCB Pin 1 G
21. 85V Note 1 If the voltage of pin 3 is 3 85V the Deuterium lamps is on or it is off 2 If the voltage of pin 4 is 5V the Tungsten lamps 15 on or it is off J10 To 25 2625 of Tungsten Lamp Pin 1 DC 18V Pin 2 DC 10 8V Pin 3 DC 10 5V J11 To Cooling Fan Pin 1 DC 12V Pin 2 GND 5 1 2 Power Distributing PCB SST8 411 130A The layout of the Power Distributing PCB is shown in figure 5 9 Figure 5 9 Layout of Power Distributing PCB The sockets description of the Power Distributing PCB as follow J1 From Switch Power Supply Pin 1 DC 12V Pin 2 6 7 DC 5V 39 HUE ANC Electronic System Pin 3 4 5 DC 12V Pin 8 9 10 GND J2 To Main Amplifier PCB Pin 1 DC 9V Pin 2 GND Pin 3 DC 9V J3 To Transferring PCB In Upper Case Pin 1 3 AC 1200V J4 To Main CPU PCB Pin 1 2 DC 12V Pin 3 4 GND Pin 5 6 DC 5V J5 To Slave Amplifier PCB Pin 1 DC 9V Pin 2 GND Pin 3 DC 9V 5 2 Control and Drive System The working principle as follow shown in figure 5 10 5 11 and 5 12 1 User setup Test Parameters by operating the Keypad The main CPU on Main CPU PCB command the motor to goto the setup wavelength select the correct light source and filter 2 Halogen or deuterium lamp to supply the light the Monochromator to isolate the wavelength of interest and eliminate the unwanted second order radiation the sample compartment to accommodate the sample solution 3
22. Amplifier PCB Reference Holder Slave CPU PCB Power Distributing PCB Main CPU PCB LCD Display 320X240 Sample Compartment Lid Upper Case Viewing Hole 232 Serial Interface Power Switch 110V 220V Selector Layout 2 Concave Mirror 4 Heat Radiator 6 Motor1 Lamp Change 8 Mirror1 Lamp Change 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 AO 42 44 46 48 50 52 54 Light Blocking Shelf1 Entrance Slit Fortified Board Screw Thread Pole Wavelength Limit switch Motor2 Wavelength Drive PCB Pull Push Rod Motor3 Filter Main Amplifier PCB Sample Compartment Sample Holder Lamp Source Room Light Blocking Shelf2 Rectifier Switch Power Supply Program Switch for Software Update Keypad Transferring PCB In Upper Case Viewing plate Contrast Potentiometer for LCD Printer Interface Power Socket with Fuse 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 Layout Figure 3 14 Layout of UV 4802 Inside Top View OOOOOOOOOOOOOOO OOOOOOOOOOOOOOO
23. D2 lamp 13 Monochromator 15 Sine Bar 17 Movable Block 19 Gear 21 Photo coupler1 Wavelength 23 Auto cell Changer Connector 25 Photo coupler2 Filter 27 Shield Cover 29 Condenser Lens 31 Light Distribute Room 33 Condenser Lens 35 Lamp Source Room 37 Shield 39 Rectifier 41 Switch Power Supply 43 Program Switch for Software Update 45 Keypad 47 Transferring PCB In Upper Case 49 Viewing plate 51 Contrast Potentiometer for LCD 53 Printer Interface 55 Power Socket with Fuse Layout 2 Concave Mirror 4 Heat Radiator 6 Motor1 Lamp Change 8 Mirror1 Lamp Change 10 Light Blocking Shelf1 12 Entrance Slit 14 Fortified Board 16 Screw Thread Pole 18 Wavelength Limit switch 20 Motor2 Wavelength 22 Drive PCB 24 Pull Push Rod 26 Motor3 Filter 28 Main Amplifier PCB 30 Sample Compartment 32 4 Cell Sample Holder 34 Slave Amplifier PCB 36 Slave CPU PCB 38 Light Blocking Shelf2 40 Power Distributing PCB 42 Main CPU PCB 44 LCD Display 320X240 46 Sample Compartment Lid 48 Upper Case 50 Viewing Hole 52 232 Serial Interface 54 Power Switch 56 110V 220V Selector 16 1 I 1 1 NL Layout 39 LO sr OW CO
24. J12 on Trouble Shooting Light change motor works OK DC 12 on pin 5 of J4 on PCB SST8 414 103 104 OK Y SST8 414 103 104 OK Y The voltage on 2 of J12 on PCB SST8 414 103 104 is from 0 5V when the limit switch refer item 9 of layout on page 3 is down Y 1 Solving the wiring of light change motor 2 Solving the wiring of CN2 on PCB SST8 414 103 104 3 Replace PCB 5518 414 103 104 4 Replace light change motor 5 Replace PCB 5518 412 113 1 Solving the Wiring CN1 on PCB 55 8 414 103 104 to 5518 412 113 2 5518 414 103 104 DC 12 on 1 of CZ1 3 Replace PCB SST8 412 113 PCB SST8 412 113 OK N Y Refer 6 18 1 Solving wiring J12 on PCB 5518 414 103 104 to lamp change limit switch 2 Replace lamp change limit switch 1 Solving the wiring CN1 on PCB SST8 414 103 104 to PCB SST8 412 113 2 Replace PCB 5518 414 103 104 1 Solving the wiring of CN2 on PCB SST8 414 103 104 2 Replace PCB 55 8 414 103 104 3 Replace SST8 412 113 LEES euble Shooting 6 7 Auto cell check failed Auto cell holder positioning failed Y DC 12 on pin 1 of CZ1 Auto m 2 uto cell holder motor works
25. Monochromator Sine Bar Movable Block Gear Photo coupler1 Wavelength Auto cell Changer Connector Photo coupler2 Filter Shield Cover Condenser Lens Slit Switch Equipment Photo coupler4 Slit Lamp Source Room Light Blocking Shelf2 Power Distributing PCB Main CPU PCB LCD Display 320X240 Sample Compartment Lid Upper Case Viewing Hole 232 Serial Interface Power Switch 110V 220V Selector Note EX 253 UV 2802 UV 2802S Heat Radiator Motor1 Lamp Change Mirror1 Lamp Change Light Blocking Shelf 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 Entrance Slit Fortified Board Screw Thread Pole Wavelength Limit switch Motor2 Wavelength Drive PCB Pull Push Rod Motor3 Filter Amplifier PCB Sample Compartment 4 Cell Sample Holder Motor4 Slit Slave CPU PCB Rectifier Switch Power Supply Program Switch for Software Update Keypad 7 Transferring PCB In Upper Case Viewing plate Contrast Potentiometer for LCD Printer Interface Power Socket with Fuse Only for UV 2802S UV 2802PCS 10 38 N LO CN 00 OW xt CO CN CN CN CN CN CN CY Figure 3 5 Layout of UV 2
26. T E EE a m Figure 5 13 Layout of Main CPU 44 The sockets description of the main CPU PCB as follow CZ1 From Power Distributing PCB Pin 1 2 DC 12 Pin 3 4 GND Pin 5 6 DC 5V CZ2 To Slave CPU PCB Pin 1 Reset W78E52B on Slave CPU PCB Pin 2 Transfer signal to W78E52B on Slave CPU PCB Pin 3 Receive signal from W78E52B on Slave CPU PCB Pin 4 GND Pin 5 DC 5V CZ3 To RS 232 Port Pin 1 GND Pin 2 Transfer signal Pin 3 Receive signal 24 Transferring PCB In Upper Case Pin 1 8 Output to signal Keypad Pin 9 12 Input signal from Keypad CZ5 To Printer Port Pin 1 Pulse for read the data for printer Pin 2 9 Data bus Pin 10 Error detect 5V indicate the printer is OK Pin 11 Busy detect 5 indicate the printer is busy Pin 12 Reset the printer Pin 15 16 GND CZ6 To Transferring PCB In Upper Case Pin 1 4 13 Control signal of LCD Pin 5 DC 5 20 5V contrast adjust Pin 6 DC 5V Pin 7 GND Pin 8 DC 20 5V Pin 9 12 Data bus CZT To Power Supply PCB Pin 1 DC 5 3 85 5 Tungsten lamps is on Pin 2 DC 3 85 5 3 85 Deuterium lamps is Pin 3 4 DC 5V J3 To Auto cell Connector Pin 1 4 Drive auto sample Holder step motor Pin 5 DC 12V J8 To Auto cell Connector Pin 1 2 DC 5V 0V Pin 3 DC 12V 4 5 6 DC 5 45 IT B ENT
27. main light focused on the sample after it passed though the condenser lens continue pass through the sample the light finally to the photodetector on the main Amplifier PCB The slave light passed though the condenser lens to the photodetector on the Slave Amplifier PCB Shown in Figure 4 2 4 3 3 Exit of the Double Beam UV 4802 From the exit slit the light was separated two paths by the mirror the main light focused on the sample after it passed though the condenser lens continue pass through the sample the light finally to the photodetector on the main Amplifier PCB The slave light focused on the 2nd exit slit in the slave light path then focused on the reference after it passed though the slave condenser lens continue pass through the reference the light finally to the photodetector on the slave Amplifier PCB Shown in Figure 4 3 22 SUO Joy HIS 99 jesuepuoo UC 05 unuejneg WIS b 24 gt lt JOIN NI an Optical System schematic diagram of 2800 UV 2802 UV 2802S UV 2802PC UV 2802PCS Figure 4 1 28 JOJN uejsbDun 15 TS JOJN N 115 A NS SES 55565 Sue
28. will be produced Record the maximum value around 550nm 25 to 60 full scale Record the maximum value below 340nm 5 to 10 full scale For 2nm bandwidth the energy will be approximately half these values 86 Order No List of UV 2800 505 411 029 SST8 411 128A 500 003 001 Switch Power Supply T 60B Appendix lt 87 PART NUMBER 505 411 029 505 411 030 505 412 021 505 412 022 505 415 005 Order No List of UV 2802 UV 2802PC DESCRIPTION OR PCB NO 5518 411 128 5518 411 128 SST8 411 130 5518 411 130 5578 412 113 5578 412 314 5 18 412 314 5578 413 102 5578 414 104 5578 417 100 SST8 417 101 SST8 415 001 B SST8 415 001 D Cooling Fan Transistor1 W Lamp Transistor2 D2 Lamp Motor1 Lamp Change Motor2 Wavelength Motor3 Filter W Lamp D2 Lamp Limit Switch1 Lamp Change Limit Switch2 Wavelength LCD 320X240 DMF50081 Transformer Switch Power Supply T 60B Appendix 88 PART NUMBER 505 411 029 505 411 030 505 412 021 505 412 022 505 415 005 Order List of UV 2802S UV 2802PCS DESCRIPTION OR PCB NO 5518 411 128 SST8 411 128A SST8 411 130 5518 411 130 SST8 412 113 SST8 412 314 SST8 412 314A 5578 413 102 SST8 414 104 SST8 417 100 SST8 417 101 SST8 415 001 B SST8 415 001 D Cooling Fan Transistor1 W Lamp Transistor2 D2 Lamp Motor1 Lamp Change Motor2 Wavelength Motor3 Filter Motor4 Slit Limit S
29. 00 Y 1 Solving wiring from LCD display to J3 on SST8 417 100 2 Replace LCD display 68 6 15 Backlight OK but display nothing on LCD Display Backlight OK but display nothing 1 Solving the wiring of CZ6 on PCB SST8 412 113 2 Solving the wiring of CZ61 on PCB SST8 417 100 Problem solved N Screen flash Y N 5V on pin 6 of CZ1 on PCB 5518 412 113 OK Y Y Adjust the contrast adjuster Y OK 1 Replace PCB 5518 412 113 2 Replace LCD display Solving the wiring of CZ1 5518 412 113 Y v Test point 20V on PCB SST8 412 113 OK N 1 Solving the wiring of Y J18 PCB ST8 412 113 1 Replace PCB SST8 412 113 2 Replace constrast 2 Replace LCD display adjuster 69 Shooting 6 16 Energy low warning after blanking Energy low Anything block off the beam in the sample compartment Y it away N The wavelength at UV area Y 55 cuvette N Y 1 The reference solution have Y N high absorbency against air H Replace cuvette lt N Dilute reference solution gt Filter positioning OK
30. 02 Slave CPU 55 Electronic System The sockets description of the slave CPU of UV 2800 UV 2802 S UV 3802 as follow J1 From Main CPU PCB Pin 1 Reset 8 2 Pin 2 Receive signal from W77E58 on Main CPU PCB Pin 3 Transfer signal to W77E58 on Main CPU PCB Pin 4 GND Pin 5 DC 5V J2 To Slave Amplifier PCB Pin 1 GND Pin 2 Analog signal from pin 6 of 7 Pin 3 4 Control amplifier multiple of Slave Amplifier PCB J3 To Amplifier PCB Pin 1 GND Pin 2 Analog signal from pin 6 of 7 Pin 8 DC 5V Pin 3 7 Control amplifier multiple of Amplifier PCB jet 111 L fl L L L M _ Figure 5 24 Layout of UV 4802 Slave CPU The sockets description of the slave CPU PCB of UV 4802 as follow J1 From Main CPU PCB Pin 1 Reset 8 2 Pin 2 Receive signal from W77E58 on Main CPU Pin 3 Transfer signal to W77E58 on Main CPU PCB 56 4 GND Pin 5 DC 5V J2 To Slave Amplifier PCB Pin 1 2 3 5 7 9 11 13 Pin 4 Pin 6 8 10 12 14 J3 To Amplifier PCB Pin 1 2 3 5 7 9 11 13 15 Pin 4 Pin 6 8 10 12 14 16 Electronic System GND Analog signal from pin 6 of 7 Control amplifier multiple Amplifier PCB Slave GND Analog signal from pin 6 of 7 Control amplifier multiple Amplifier PCB Slave 57 6 Trouble Shooting 6 1
31. 314A 2 z 2 5 z s 5 o 5 CAE j __ _ Ol Bl Al EM CZ6 gt J1 1 N N g Ss 5 4 5 2 995 Rus 0 70 6 15 5 E Toz S8 218 5513 414 104 S 42 8 2 CN2 Keypad N 4 EE 2 5 wv o 2 DN e 4 5 41 5 s 2 8 al 2 Only for UV 2802 gt 5 3 s amp o 5 3825 Sl 3 Figure 5 2 Connection of UV 2802 UV 2802PC 2 80 Power Supply Socket Power Switch 115V 230 Selector lt 3EGGI 2 R220 22C 11D 121 22 1 TU x 977 3 2 4508 undo e o gt 4 5 iet Or ed Z ON SI Yel Gm YelG WD E Er R OWer L Set Wht 5 Yel Gm SST8 411 128A PCB PCB gt Wht SST8411 130A SST5 413 104A C12V V a E 45V EC EX qune x S SST8 412 113 71 77 5 EEEE 5518 417 100 558 412 144 is Sl
32. 802 UV 2802PC Inside Top View Layout 11 N CN 00 F LO t CO 0 NNN CN CN CN CN Figure 3 6 Layout of UV 2802S UV 2802PCS Inside Top View Layout Figure 3 7 Layout of UV 2802 S UV 2802PC S Inside Bottom View CN lt 39 T lt 40 OOOOOOOOOOOOOOO Layout Figure 3 8 Layout of UV 2802 S Top View xr 10 LO Figure 3 9 Layout of UV 2802 S UV 2802PC S Back View Layout 3 3 Layout of UV 3802 1 Cooling Fan 3 Tungsten Lamp W Lamp 5 D2 W Power Supply PCB 7 Transformer 9 Lamp Limit Switch 11 Deuterium Lamp
33. A OK N 1 Solving the wiring of J1 on PCB SST8 413 104A 2 Replace PCB 5518 413 104 Y DC 9 on pin 1 of J2 on oolving the wiring of J2 on PCB SST8 411 130A 18 411 130 OK N Y DC 12V on switch power output OK N 1 Solving the wiring of J1 on PCB SST8 411 130A 2 5518 414 130 Replace switch power supply 67 6 14 backlight of LCD Display Turn on LCD display have no backlight Trouble Shooting AC 110V or 220V Power on N Power on Y Y Power cord connect OK gt Connect power cord Y Replace fuse Y Fuse OK gt Y Y AC 110V 220V input of Switch Power OK gt oolving wiring from power socket to the switch power Y 5V of Switch Power output OK Replace switch power Y Y 5V of J1 PCB SST8 411 130A OK N gt oolving wiring from J1 on SST8 411 130A to switch power Y Y AC 1200V of J3 on PCB gt SST8 411 130A 5518 411 130 OK Y Y AC 1200V of J3 on PCB 5518 417 100 OK N oolving wiring from J3 on SST8 411 130A to 5518 417 1
34. B 91
35. Locate the battery to be replaced on the board DO NOT REMOVE IT YET Make sure you have the replacement battery ready Turn on the spectrophotometer and keep it on for a few minutes Turn off the spectrophotometer Immediately after turning off the spectrophotometer remove the old battery and insert the new one This MUST be completed within 3 minutes of the spectrophotometer being turned off Failure to follow the correct battery replacement procedure may result in saved data being lost and a possible PC software communication problem is recommended to transfer the data saved in the memory to computer with PC download software before replace battery 3 Replace the bottom cover on the spectrophotometer ensuring that all the star washers are in position 7 5 Upgrade Firmware 1 Turn round spectrophotometer to find the switch shown in Figure 7 12 on the 81 ig 73 mi a Maintenance base that controls spectrophotometer to run in normal or upgrading status Convert the switch to upgrading status Figure 7 12 Normal Program Switch for Software Update 2 spectrophotometer to the computer with the correct RS232 cable Note Itis recommended that you connect spectrophotometer to Comm1 of your computer 3 Before updating the software save or copy the folder Update UNICO provided to the disk C of your computer Usually there are five files in the folder Update whic
36. ND Pin 2 DC 5V Pin 3 4 Control amplifier multiple from Slave CPU PCB The multiple of EHE slave Amplifier PCB as follow Note 1 0 Logic low OV 1 Logic high 5V 88 JLI Electronic System E P Lad P t Figure 5 21 Layout of UV 4802 Slave Amplifier The sockets description of the slave Amplifier PCB of UV 4802 as follow Pin 1 DC 9V Pin 2 GND Pin 3 DC 9V J2 From Slave CPU PCB Pin 1 2 3 5 7 9 11 13 GND Pin 4 Analog signal from pin 6 of 7 Pin 6 8 10 12 14 Control amplifier multiple from Slave CPU PCB The amplifier multiple of UV 4802 slave Amplifier PCB as follow Pin 6 Pin 8 Pin 10 Pin 12 Pin 14 __6 1 J 1 1 1 0 _ 8 Note 1 0 Logic low 1 Logic high 5V 54 5 3 3 Slave CPU PCB SST8 412 314 The layout of the slave CPU PCB is shown in figure 5 22 5 23 5 24 p md 10 gm TONO T oe 02 10400 T UC 2 rl Tr Cl 41 al C ps 0 k 8 io d C ji 4066 U MI O 100 3 IER Figure 5 23 Layout of UV 38
37. O NOT HANDLE THE LAMP WITH BARE FINGERS USE 10 11 12 TISSUE OR CLOTH WHEN HANDLING LAMP The oil from your fingers can cause the lamp to burn out prematurely Re fit all the screws around the sides of the spectrophotometer Install the gray metal protection cover and cover of instrument Re set the Tungsten lamp usage time Select Utility lamp and re set W lamp usage time 7 3 Replace Deuterium Lamp 77 hen Maintenance 1 Dothe same step as 1 5 of 7 2 replace Tungsten Lamp 2 Disconnecting the connector 7 on the PCB marked SST8 411 128 Unscrew the screw that holds the lamp bracket to the instrument base the entire lamp and lamp holder assembly out Shown in Figure 7 7 Figure 7 7 Take off the Deuterium Lamp 3 Replace the pre aligned lamp with a lamp Figure 7 8 provided by UNICO or an authorized UNICO Service Provider This comes pre assembled with lamp socket CAUTION THE LAMP MAY BE HOT TAKE PRECAUTIONS TO PREVENT POSSIBLE BURNS Figure 7 8 Deuterium Lamp 4 Reconnect the connector J7 to the PCB marked SST8 411 128 5 Re fit the grey metal protection cover Temporarily the main cover and fix with two screws one each side 6 Switch on and remove the grommet from the middle of the rear panel You can now look through the Viewing Hole and view the image of the lamp on the slit Check the lamp alignment Figure 7 9 If the image is not covering the slit the lam
38. Pin 2 DC 5V Pin 3 6 Control wavelength step motor Pin 7 10 Control filter step motor Pin 11 14 Control lamp Change step motor J4 To lamp Change step motor Pin 1 4 Drive slit step motor Pin 5 DC 12V J5 To filter step motor Pin 1 4 Drive filter step motor Pin 5 DC 12V J6 To wavelength step motor Pin 1 4 Drive wavelength step motor Pin 5 DC 12V J7 To slit step motor Pin 1 4 Drive slit step motor Pin 5 DC 12V J9 To filter Photo coupler Pin 1 GND Pin 2 DC 5 0V OV only at initiative position Pin 3 DC 1 2V J11 To slit Photo coupler Pin 1 GND Pin 2 DC OV 5 5V only at initiative position Pin 3 DC 1 2V J12 To lamp limit switch Pin 1 GND Pin 2 DC 5 0V OV only at initiative position Pin 3 DC 5V J14 To wavelength Photo coupler and limit switch Pin 1 GND Pin 2 5 5V when the mobile block at start end point Pin 3 DC 5V 5 2 3 Transferring PCB In Upper Case SST8 417 100 The layout of the Transferring PCB In Upper Case is shown in figure 5 17 48 Electronic System Figure 5 17 Layout of Transferring PCB In Upper Case The sockets description of the Transferring PCB In Upper Case as follow J3 From Power Distributing PCB Pin 1 3 AC 1200V J31 To LCD back light Pin 1 2 AC 1200V CZ4 From Main CPU PCB Pin 1 8 Output signal to Keypad Pin 9 12 Input signal from Keypad 241 keypad Pin 1 8 Output signal to Keypad Pi
39. Tungsten lamp off Tungsten lamp off 1 Solving the wiring from Y J8 to tungsten lamp 2 Replace Tungsten lamp DC 0 7V between pin 2 3 B E of J10 on PCB SST8 411 128A OK N DC 18V between 1 4 Y DC 3 5 between pin 1 3 C E of of J1 on PCB 2 10 414 128 OK Y DC 5 on pin 4 of J9 on AC 15V between pin 1 2 2 1 of J2 i SST8 411 128A OK DC 5V on pin 1 of CZ7 on N 2 x SALE 1 Solving wiring from N Y transformer to J2 Y Replace 5578 412 113 v 2 transformer 1 Solving the wiring from oolving the wiring from CZ7 to J1 to rectifier J9 on PCB SST8 411 128A 2 Replace rectifier Y 1 Solving the wiring from gt Replace SST8 411 128A J10 to 25 2625 2 Replace 25 2625 6 2 Deuterium lamp off Deuterium lamp off 1 Solving the wiring from J7 Y to deuterium lamp 2 Replace deuterium lamp DC 49 on pin 2 3 of J on PCB 5519 411 128 OK N Y DC 0 7 between pin 2 3 B E and DC 43 between pin 1 3 CE of J6 Y on PCB SST8 411 128A OK
40. UN COSQSeries MODEL 2800 UV 2802 UV 2802PC UV 28025 UV 2802PCS UV 3802 Uv 4802 SPECTROPHOTOMETER SERVI CEMANUAL UNICO 182 Ridge Road Suite E Dayton NJ 08810 USA 732 274 1155 Fax 732 274 1151 WEB www unicosci com E mail Sales unicosci com 5 1 rc 1 2 ege eed ee 3 SNB ee 4 31 Layout or 2800 co eiue doe E t Du 4 3 2 Layout of 2802 5 2802 5 9 2 9 Layout or V 90D2 eau eine pdt ondes 15 3 4 Layout or UV 4902 erano oot oa eu lleve da e d a 20 4 System E RO Rin NEU E REESE 25 INCIDENCE or QI ciencia uus doti nan Ido deme its 25 4 2 Dispersion of tenes eink Aan dte nce seca 25 XIU On BIO iesu 25 4 3 1 Exit of the Single Beam UV 2800 UV 2802 28025 25 4 3 2 Exit of the Split 0 3802 25 4 3 3 Exit of the Double 0 4802 25 5 Electronic SysleM tUe 29 5T tins ta utu etinm 34 94151
41. ctors CZ6 CZ4 and J3 on PCB marked SST8 417 100 Be sure to reconnect after replacing the lamp Show in Figure 7 3 Figure 7 3 Unplug J3 CZ4 CZ6 5 Remove the grey metal protection cover Using screwdrivers remove the two top screws and the two bottom screws and then place the protective cover to the side Shown in Figure 7 4 205 Maintenance Figure 7 4 Remove the Lamp Cover 6 Remove the lamp from the ceramic base 7 Insert the new lamp Figure 7 5 pushing it in as far as it will go Figure 7 5 Tungsten Lamp 8 Re fit the grey metal protection cover temporarily the main cover and fix with two screws one each side 9 Switch on and remove the grommet from the middle of the rear panel You 296 nies _ 1 Maintenance can now look through the Viewing Hole and view the image of the lamp on the slit Check the lamp alignment shown in Figure 7 6 If the image is not covering the slit the lamp alignment needs adjustment This requires running the SQ series without the covers with high voltages accessible and so should only be performed by a suitably qualified engineer If adjustment is required remove the cover and grey protection cover and turn on the instrument Adjust to make the image central on the slit Install the grey metal protection cover and instrument cover Focus on the slit Figure 7 6 Adjust Tungsten Lamp CAUTION D
42. emory Init Comm Port Init Printer Start Kernel Camspec Limited Cambridge Camspec M501 Figure 7 17 Calibrating 7 6 Check Performance 7 6 1 Prepare 1 Switch on and wait for 15 minutes Ensure beam is clear 2 Select system calibration yes 3 When main menu appears at the end of calibration 7 6 2 Check Wavelength Accuracy 84 09 Maintenance Prepare Refer 7 6 1 Press 3 to select WL 5 press F1 to setup set the parameter as follow press Enter to finished setup Scan from 400 Scan to 300 Scan Step 0 1 Scan Speed HI Ensure beam is clear Press OAbs to scan blank Insert holmium filter Press Start When scan complete press Search Press WV record wavelength of holmium peak specification 360 9 x1nm Press 5 press F1 to setup set the parameter as follow press Enter to finished setup Scan from 850 Scan to 750 Scan Step 0 1 Scan Speed HI Ensure beam is clear Press OAbs to scan blank Insert didymium filter Press Start When scan complete press Search Press WV record wavelength of didymium peak specification 807 1 1 7 6 3 Check Stray Light 09 7 6 1 Press input 340 press Enter to go to 340nm Ensure beam is clear Press 1 to Basic Mode and automatic blanking Insert GG375 filter Record stray light at 340nm specification gt 3A
43. h are respectively Flash UNICO exe H01 H02 and H01 2 and is different base your instrument model After updating two more files are created automatically one is UV2800 bin another is serial ini Note The original serial number of spectrophotometer is stored in serial ini 4 Open the folder Update and double click on the icon Flash UNICO 5 The System updating program for UNICO screen will appear Shown in Figure 7 13 System updating program for Unico 502000 C 1 2800 U 2800 0ld Version 11 0582 2 SERIALNO12 Upload SN Model Selection 1 Selection information 14802 ee Download SN Unico Shanghai Instruments Co Ltd 2004 02 25 Figure 7 13 Upgrade Form 99 XT Lj Maintenance 6 Click to select instrument model in Model Selection Click on the small pull down triangle on the right to select the comm port 1 default There are 4 comm ports available It depends on which comm port you connected between the computer and spectrophotometer Click on the ellipse icon Load then only select the file HOO in the folder Update click on Open to load Turn on spectrophotometer the screen will display as below Figure 7 14 and wait for upgrading Figure 7 14 Upgrade State Click on the button Upload SN in OEM informati
44. lt 0 1 Remove filter Press input 220 press Enter to go to 220nm Insert WG295 filter Record stray light at 220nm specification gt 3A lt 0 1 7 6 4 Check Absorbance Accuracy 1 2 Prepare Refer 7 6 1 Fit neutral density filters blank 0 5A 1A 2A in cell changer and move blank into beam Press input 546 press Enter to go to 546nm Push filters into beam and record values Compare the results with the calibrated absorbance specification lt 1 so lt 0 005A at lt 0 010A at lt 0 020 at 2A 85 Maintenance 7 6 5 Check Dark Current 1 2 3 Prepare Refer 7 6 1 Press 7 to select Utility Press Print to select diagnostic menu Note Sometimes this page has a bar at the top and only the serial number below instead of the diagnostic menu Press 5 to select Check Dark Current even if Check Dark Current is not displayed A table of Gain Energy will be produced The minimum at Gain 0 should be greater than or equal to 1 The maximum at Gain 10 should be 2000 to 4000 7 6 6 Check Energy Profile 1 2 Prepare Refer 7 6 1 Press 3 to select WL Scan press F1 to setup set the parameter as follow press Enter to finished setup Scan from 1100 Scan to 190 Scan Step 0 5 Scan Speed HI Press 6 Press Enter to select ADEX 1 The wavelength will go to 1100nm and the energy profile
45. n 9 12 Input signal from Keypad CZ6 From Main CPU PCB Pin 1 4 13 Control signal of LCD Pin 5 DC 5V 20 5V contrast adjust Pin 6 DC 5V Pin 7 GND Pin 8 DC 20 5V Pin 9 12 Data bus CZ61 To LCD Display 320X240 Pin 1 4 13 Control signal of LCD Pin 5 DC 5V 20 5V contrast adjust Pin 6 DC 5V Pin 7 GND Pin 8 DC 20 5V Pin 9 12 Data bus 49 Electronic System 5 3 Sampling and Signal Processing System The working principle as follow 1 The photo detector receives the light signal converts it to be electrical signal analog signal 2 Amplifier the analog signal the multiple is control by the CPU on the Slave CPU PCB W78E52B 3 The A D converts analog signal to be digital signal 4 The Slave CPU send the digital signal to the main CPU 5 3 1 Amplifier PCB SST8 413 104A The layout of the Amplifier PCB of UV 2800 UV 2802 UV 2802PC UV 2802S and UV 2802PCS R17 R20 of UV 28028 and UV 2802PCS are different from others is shown in figure 5 18 UV 4802 is shown in figure 5 19 1081 Figure 5 18 Layout of UV 2800 UV 2802 28025 UV 2802PC UV 2802PCS UV 3802 Amplifier PCB The sockets description of the Amplifier PCB of UV 2800 UV 2802 S UV 3802 as follow J1 From Power Distributing PCB Pin 1 DC 9V Pin 2 GND Pin 3 DC 9V J2 From Slave CPU PCB 50 Pin 1 GND Pin 2 Analog signal from pin 6 of 7 Pin 8 DC 5V Pin 3
46. ning Y Y Y DC 12 on pin 1 of CZ1 1 Solving the wiring of CN1 on 2 414 104 Vor PCB SST8 412 113 2 Replace PCB SST8 414 104 N 3 Replace PCB SST8 412 113 Y 1 Solving the wiring of J11 on PCB SST8 414 104 1 Solving the wiring of CN1 2 Replace photo opti on PCB SST8 414 104 Pal 2 Replace PCB SST8 414 104 3 Replace 5518 412 113 1 Solving wiring of CN1 PCB SST8 414 104 2 Replace SST8 414 104 64 Trouble Shooting 6 9 Search 656 1nm failed D2 Energy too low display on top side of right hand corner of the screen after finishing Reset WL Search 656 1nm failed Anything block off the beam in the sample compartment N Deuterium lamp on Y Y Light Source positioning OK Y Y Filter positioning OK Y Take it away N gt Refer 6 2 6 6 N gt Refer 6 5 Y Y Wavelength motor works OK Y 1 Solving the Ming of J2 on PCB SST8 413 104A 2 Replace PCB 5518 413 104 3 5578 412 314 1 Solving wiring of wavelength motor 2 Replace PCB 5518 414 103 104 3 Replace SST8 412 113 4 Replace wavelength motor 65 Trouble Shooting 6 10 Please restart warning Please res
47. on the original serial number of spectrophotometer will appear in line 1 line 3 and is stored in serial ini shown in Figure 7 15 If you do not have the original serial number please contact UNICO System updating program for Unico 502000 Model Selection ATAL Selection information C UV2800 Dld Version 11 0592MHz 050403010 12800 5 UV3802 C 221184MH2 psy Uv4802 Unico Shanghai Instruments Co Ltd 2004 02 25 Figure 7 15 Upload SN 10 Click on the ellipse icon flash on the left to start 932 System updating program for Unico 502000 BEREN Model Selection 7 rXTA L Selection OEM information C U 2800 Old Version 05040301 0 11 1042800 11 0592MHz d Maintenance e 1073902 221184MH Uv4802 5 25F xxv Unico Shanghai Instruments Co Ltd 2004 02 25 Figure 7 16 Upgrading Note Do not click on any icon during the process of upgrading 11 After beeping three times the software is upgraded successfully turn off the spectrophotometer and then change the switch on the base of spectrophotometer to the normal position 12 Turn on the spectrophotometer it will run with the new software 13 is highly recommended that following software upgrading you select calibration system after the self testing process shown in Figure 7 17 WL 889 Wait until EasyRTOS booted Check M
48. p Change Light Blocking Shelf 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 Entrance Slit Monochromator Cover Screw Thread Pole Drive PCB Synchro Strap Pull Push Rod Photo couple2 Filter Amplifier PCB 4 cell Sample Holder Slave CPU PCB Auto cell Changer Connector Rectifier Switch Power Supply Program Switch for Software Update Keypad Transferring PCB In Upper Case Viewing Plate Contrast Potentiometer for LCD Printer Interface Power Socket with Fuse with Fuse jl 1 a 34 ON TO QOO p CO CN CN CN CN CN CN CN CN Figure 3 1 Layout of UV 2800 Inside Top View 35 36 38 37 Figure 3 2 Layout of UV 2800 Inside Bottom View Layout qub Y L1 Es Figure 3 3 Layout of UV 2800 View Layout Layout 44 45 46 47 48 LO LO Figure 3 4 Layout of UV 2800 Back View 3 2 Layout of UV 2802 S 2802 5 Cooling Fan Tungsten Lamp W Lamp D2 W Power Supply PCB Transformer Lamp Limit Switch Deuterium Lamp D2 lamp
49. p alignment needs adjustment This requires running the SQ series without the covers with high voltages accessible and so should only be performed by a suitably qualified engineer If adjustment is required remove the cover and grey protection cover put on UV protection glasses and turn on the instrument Adjust to make the image central on the slit Figure 7 9 CAUTION Wear UV protection glasses when replacing deuterium lamp 7 Install the grey metal protection cover and cover of instrument 8 Re fit all the screws around the sides of the spectrophotometer 9 Re setthe lamp usage time Select Utility lamp and re set D2 usage time 79 f i i Focus on the slit Figure 7 9 Adjust Deuterium Lamp 7 4 Replace Memory Battery 1 Turn the spectrophotometer upside down onto a padded surface Remove the all screws around the sides of the spectrophotometer shown in Figure 7 10 and take away the bottom cover Figure 7 10 Remove the bottom cover 80 Maintenance 2 There is a round lithium battery on the main CPU PCB Shown in Figure 7 11where the red arrow is pointed The battery model is CR1220 with voltage from Panasonic Note 1 2 3 4 5 6 Note Figure 7 11 Battery Position Since the capacitor will only be able to maintain power for 5 6 minutes we suggest you follow the procedure With the power unplugged remove the bottom cover
50. power output OK N Replace switch power supply Trouble Shooting 6 18 DC 12V SST8 412 113 gt oolving the wiring of J4 on PCB SST8 411 130A Y gt 1 Solving the wiring of DC 12V output 2 Replace PCB oST8 411 130A zou 1 CN Maintenance 7 Maintenance 7 1 Working Environment Placed the instrument on a clean non vibrational table the optimum environment as follow the temperature is between 5 to 35 C the humidity is no more than 85 avoid direct strong light and air flow the voltage stability is greater 10 and the frequency stability is greater than 1 of the power supply no strong magnetic field near the instrument Always allow the instrument to warm up for 20 minutes prior before do any test 7 2 Replace Tungsten Lamp CAUTION HIGH VOLTAGE 1 Turn off and unplug the instrument 2 Remove the cuvette holder rod by unscrewing the rod counterclockwise 3 Remove all screws around the sides of the spectrophotometer Show in Figure 7 1 73 Figure 7 1 Remove cover screws 4 Very carefully remove the cover of the instrument and place in right side of the instrument Show in Figure 7 2 Figure 7 2 Remove the cover Maintenance HINT If it is necessary to remove the cover from the right side of the instrument carefully remove 3 conne
51. schematic diagram of UV 3802 UV 4802 The power supply system of the SQ series are made up of two parts the transformer supplied for the light source as Tungsten lamp and Deuterium lamp and the Switch Power Supply supplied for the control system as CPU Driver zB System and so on The schematic diagrams are shown in figure 5 6 and 5 7 5 1 1 Power Supply PCB SST8 411 128A The layout of the Power Supply PCB is shown in figure 5 8 gt y W 5 9 R 4 e gt d 7 f 1 510 i HA f 8V U ZP Figure 5 8 Layout of Power Supply The sockets description of the Power Supply PCB as follow J1 To Rectifier Pin 1 DC 18 Pin 2 3 AC 15V J2 From Transformer Pin 1 2 AC 15V J3 From Transformer Pin 1 4 AC 18V Pin 2 5 AC 18V Pin 3 6 GND J4 From Transformer Pin 1 4 AC 250V Pin 5 6 AC 105V J5 From Transformer Pin 1 3 AC 6V J6 To 25 2625 of Deuterium Lamp Pin 1 DC 46V Pin 2 DC 3 6 Pin 3 DC 3V 7 Deuterium Lamp 38 1 DC 118V 131V Pin 2 DC 49V 11 5V Pin 3 DC 49V 11 5V Note When staring the Deuterium lamp the voltage refer in the J8 To Tungsten Lamp Pin 1 DC Pin 2 GND J9 From Main CPU PCB Pin 1 2 DC 5V Pin 3 DC 3 85V 5V Pin 4 DC 5V 3
52. tart display on top right corner on LCD screen The slice on the screw thread pole stay in the photo coupler Y 1 Solving the wining of J14 on PCB SST8 414 103 104 2 Solving the wiring of CN2 on PCB SST8 414 103 104 3 Replace photo coupler 4 Replace PCB 1 Solving the wiring of limit switch to photo coupler 2 Solving the wiring of J14 on PCB SST8 414 103 104 3 Replace limit switch SST8 411 103 104 5 Replace IC 8255 of U17 on PCB SST8 412 113 6 Replace PCB ST8 412 113 6 11 Battery low warning Battery low warning Replace the battery on PCB 5578 412 113 7 4 on 44 6 12 Save load file failed keypad goes dead after key Save or Load is pressed Save or load file failed Restart instrument press 7 in Main Menu press F1 and select yes yes to format file system N Y Replace U4 on PCB SST8 412 113 66 Trouble Shooting 6 13 Get dark current for a long time Get dark current for a long time oolving the wiring of CZ2 on PCB SST8 411 113 0K N Y DC 5 on SST8 413 104A OK N 1 Solving the wiring of J2 on PCB SST8 413 104A 2 Replace PCB 5518 412 314 DC 9 on pin 1 of J1 95T8 413 104
53. witch1 Lamp Change Limit Switch2 Wavelength LCD 320X240 DMF50081 Transformer Switch Power Supply T 60B Appendix 89 Order No List of UV 3802 PART NUMBER DESCRIPTION OR PCB NO 5518 411 128 505 411 029 505 411 030 505 412 021 505 412 023 505 413 025 505 413 020 505 414 013 505 417 006 505 415 007 505 415 005 500 003 001 SST8 411 128A SST8 411 130 SST8 411 130A SST8 412 113 SST8 412 314 SST8 412 314A SST8 413 102 55 8 413 103 SST8 413 103A SST8 414 104 SST8 417 100 SST8 417 101 SST8 415 001 B SST8 415 001 D Cooling Fan Transistor1 W Lamp Transistor2 D2 Lamp Rectifier Motor1 Lamp Change Motor2 Wavelength Motor3 Filter W Lamp D2 Lamp Limit Switch1 Lamp Change Limit Switch2 Wavelength LCD 320X240 DMF50174 Switch Power Supply T 60B Appendix 90 Order No List of UV 4802 Appendix PART NUMBER DESCRIPTION OR PCB NO 505 411 029 505 411 030 505 412 021 505 412 025 505 415 005 5518 411 128 5518 411 128 SST8 411 130 5518 411 130 5578 412 113 5578 412 314 5 18 412 314 5578 413 102 2 16 5578 413 102 2 14 5578 414 104 5578 417 100 SST8 417 101 SST8 415 001 B SST8 415 001 D Cooling Fan Transistor1 W Lamp Transistor2 D2 Lamp Motor1 Lamp Change Motor2 Wavelength Motor3 Filter W Lamp Limit Switcht Lamp Change Limit Switch2 Wavelength LCD 320X240 DMF50174 Switch Power Supply T 60

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