DW Service Manual Post 2007
Contents
1. HWUQ E INCORRECT CORRECT READOUT E CALIBRATI HE SCALE NORMAL OPERATION n CON 2P WF TO DC JACK 3 2 3 2 3 2 PARTS AND COMPONENTS TROUBLE SHOOTING 1 Power Supply Checking 1 1 Relevant parts Main Board DW 12 X Q5 C1061 Q3 C945 R41 1 2R 1 2W 2 1 ZENER 8 2V DC JACK BATTERY 6V 4Ah 01 A1515 Q2 C945 Q6 A733 06 NS2950 5 I 2930 5 35 H co os Rav C38 2200F 16V__ 1042 CMS 128 A1515 1004F 16V 033 L 100R Di wez uz meso as R38 A733 the Bm m D wo4 220R H T con 2e ew TO BATTERY E om 82v RAS m lt Auro arr C37 R44 K A 4 y ee 27k E A 1 4 47K GREEN RED 09 R50 a y M MI50K 22k 4 5 lt 4 U R40 AC POWER CHECK pe En zero Sw O Losar 1042 7 22K Dr R51 500K 27 Description 1 2 Power source Rechargeable Battery 6V 4Ah or AC adaptor 9V 500mA How Battery is charged completely The charging voltage is regulated by 02. VT c12 S si Rit D55308 471 10K MF R12 M4K7 gt ANI 2 5K MF c4 cs 5 1042 x7R VAS Title DW LED A D Drawing No DW 12 lil ion Size A3 Sheet of 3 Date 91 08 12 Drawn by 7 8 13 1 2 3 4 5 6 8 9 05 5V C1061TT A 4 Q3 R41 a 3 2 5 C945 1 28 1515 1 GND 1 2 C33 C34 2 DI 1042 1042 1N4148 R42 10K 1 15K Le m R39 Kx Ss jz D WO4 2208 a 1 CON 2P PW 7 i 4 ZD 82v quem Y w 3 mme 10uF 16V 276 45V Ho A 47K R48 R50 02 AJ MISOK 22K a News 2 i RAO AC POWER CHECK p gt LoBAT 1243 ES 1047 gt R49 R51 500K 2 7K Title Drawing No DW 12 Revision Size Sheet 3 of 3 Date 91 08 12 Drawn by 1 2 3 4 5 6 7 8 9 14 2 4 5 i 8 9 LEDBI 1 5 Ac Jae i AES xl TET 2 JI 35 no a lt LEDB2 2 4 9 E La Wi D 4 P 4
3. 102 535 A0401015150 TRANSISTOR 2SA1515R 2SB1116K A950Y 9 01 8 13 22 23 A0501004148 DIODE 1N4148 3 1 2 9 A0502000001 BRIDGE RECTIFIER WO6 1A BRL 0503020082 ZENER DIODE 1 2W 8V2 9A3 201 0625050000 L E D GREEN RED ROUND 5mm LED1 A0605050000 L E D ROUND 5mm GREEN A0603050000 L E D ROUND 5mm ORANGE 2 D3 5 A0602030000 L E D ROUND 3mm RED 3 D6 7 8 A0633100000 LIGHT BAR CML 1003 3 LEDB1 2 3 OPTION A0701106017 CAPACITOR EC 10uF 25V SS TYPE 3 C23 24 50 A0701107016 CAPACITOR EC 100uF 16V 1 38 A0701227017 CAPACITOR EC 2204 F 16V SS TYPE 3 C30 39 44 20 0730104050 0740030050 0804041503 0804045003 0805020120 0805021101 0805041102 0805041103 0805041153 0805041221 0805041223 A0805041272 A0805041471 A0805041472 A0805041473 A0802010305 A0802022109 A0802110108 A0802127208 A0902010020 A0907020200 A0901010020 A0907010030 A0910111020 A1100211059 A1500000004 A1306000003 A5004000004 CAPACITOR MLC CERAMIC CAPACITOR CC METAL FILM RESISTOR METAL FILM RESISTOR CARBON FILM RESISTOR CARBON FILM RESISTOR CARBON FILM RESISTOR CARBON FILM RESISTOR CARBON FILM RESISTOR CARBON FILM RESISTOR CARBON FILM RESISTOR CARBON FILM RESISTOR CARBON FILM RESISTOR CARBON FILM RESISTOR CARBON FILM RESISTOR RESISTOR NETWORK RESISTOR NETWORK RESISTOR NETWORK RESISTOR NETWORK CONNECTOR CONNECTOR PIN PLUG CONNECTOR CONNECTOR MINI JUMPER CRYSTAL BUZZER TACT SW
4. HEAT SINK A D SECTION A0203077050 A0206000072 A0207029500 A0702226016 A0713105063 A0730104050 A0740047050 A0740101050 A0803041002 A0803041501 A0803043001 A0803041500 A0804044701 A0805041101 A0805041103 140 VOLTAGE REGULATOR CAPACITOR TC POLYESTER FILM CAPACITOR MEF CAPACITOR MLC CERAMIC CAPACITOR CC CERAMIC CAPACITOR CC METAL FILM RESISTOR METAL FILM RESISTOR METAL FILM RESISTOR METAL FILM RESISTOR METAL FILM RESISTOR CARBON FILM RESISTOR CARBON FILM RESISTOR 047 0 50 30 50KQ 1 4W 500KQ 1 4W 20 1 2W 00Q 1 2W 1 4W 1 4W 5KQ 1 AW 2200 1 4W 22KQ 1 4W 2 7KQ 1 4W 4700 1 4W 4 7KQ 1 4W 47KQ 1 4W 10KQ 5 PIN 2200 9 PIN 1000 8 PIN B TYPE 4 7KQ 8 PIN B TYPE 2 PIN WAFER PITCH 3 9mm 2 x 10 PIN 180 2 PIN WAFER 180 1 3 PIN 180 PITCH 2 54 11 0592MHZ OBO 15210 KPT 1104B MB 217 22 PIN AD7705AN OP177 AS2950AW 22uF 16V 226 uF 63V 105 047 47pf 50V 47 00p 50V 101 1 4W 5 1 4W 3KQ 1 4W 500 1 4W 4 7KQ 1 4W 000 1 4W 1 41 o N 25 28 31 34 49 42 43 R48 R49 R41 R38 R19 45 R17 18 43 57 R42 R39 R47 50 R44 51 R40 R25 R46 NR8 NR7 NR1 2 NR5 6 J2 24 OPTION 91 JP2 JP2 x1 BZ1 SW1 4 Q5 u3 U1 2 04 C10 c C1 6 C8 9 C16 17 C11 12 C13 15 R7 8 R12 R11 R9 SPAN R3 6 R10 R13 14
5. R16 21 0805041561 1008000001 1100249152 F0015000012 F0015000013 20010000305 DW 40 X E0DW0001000 A0103000001 A0605050000 A0603050000 A0602030000 A0633100000 A0907021200 A0802022109 A1203200400 CARBON FILM RESISTOR EMI FILTER CRYSTAL PROTECTION BOX PROTECTION BOX SCREW EAR BOARD P C B 7 SEGMENTS LED DISPLAY L E D L E D L E D LIGHT BAR CONNECTOR PIN PLUG RESISTOR NETWORK FLAT CABLE RS232 OPTION E1DM0100000 0901010040 1202040401 KIT CONNECTOR WIRE ARRAY 5600 1 4W 055 306 55 55471 100 4 9152 2 7705 52 1 UPPER 7705 52 1 UNDER M3 6 DW 40 X 14 22mm HEIGHT 3 DIGITS ROUND 5mm GREEN ROUND 5mm ORANGE ROUND 3mm RED CML 1003 2 x 10 PIN 90 2200 9 PIN 20PIN 40CM DM 70 1 4 PIN WAFER 4PIN 40cm SINGLE HOUSING wr w R15 1 3 X2 DISP1 2 D2 1 2 D4 5 6 LEDB1 2 3 OPTION NR1 91 43 22 6 23 24 9 O XH DW SERIES WHITE en S W PART N TEM UPPER CABINET 2 PLASTIC COVER PLATE DW SERIES 20x19x3 ABS 2 3 ALUMINUM L C SUPPORT DW SERIES 2 4 S S SCREW NYLOK M4 x 0 7 x 20 4 5 LOAD CELL C2G1 T 1500 C2G1 3kg IADW 3000E C
6. o Page 6 4 Deleted 9030 10 23 1998 7 34 00 PM Manual Zero Range 23 Page 20 5 Deleted 9030 10 23 1998 7 34 00 PM A0002030 LOAD CELL C2G1 XXKG F 1 Page 20 6 Deleted 9030 10 23 1998 7 34 00 PM
7. 03DW0200 ALUMINUM L C SUPPORT DW SERIES 2 F0002DW0000 S S PLATTER DW SERIES G0002DW0000 PLASTIC PLATTER DW SERIES G0002DW0001 PLASTIC PLATTER SUPPORT DW SERIES 5005000090 BUBBLE LEVEL D14 G0004DW0001 ADJUSTABLE FEET RUBBER DW SERIES 16x3 5t 4 G0004DW0000 PLASTIC ADJUSTABLE FEET DW SERIES M8x 28 28 4 A1600060400 RECHARGEABLE BATTERY GP4 6 6V 4Ah C1GW0000000 PANEL PC GW SERIES 135 5x45 5x0 8 2 C1ADW030000 OVERLAY ADW E SERIES C1ADW030999 REAR PANEL ADW SERIES C1ADW030998 REAR PANEL ADW E SERIES REAR DISPLAY G0005NBS101 PLASTIC PLATTER CAP NBS SERIES M 16 60009090000 BATTERY DW SERIES ABS TRANSPARENT G0030DW0000 PLASTIC COVER PLATE DW SERIES 20x19x3 ABS 2 20010000616 PLASTIC SCREW M6x1x16 A0906003430 D C JACK DC 343 BLACK A1202020151 WIRE ARRAY 2PIN 15cm SINGLE HOUSING A1007000002 FERRITE CORE TR 14 1 6 28 28 6mm A1007000001 FERRITE CORE TR 16 9 28mm LOADCELL 491007000011 FERRITE CORE ____________ 19 6 5 32 CLAMP TYPE _________ 2 POWER RS 232 MAIN BO Deleted 1 4 q q q q DW 12 X MAINBOARD q 6 E0ADWO00010 P C B DW 12 X 0103000001 7 SEGMENTS LED DISPLAY 14 22mm HEIGHT 3 DIGITS 2 DISP1 2 40201089582 To SM8958C25P 05 20202093462 93C46PC27 OR 931 46 07 40204742441 Tuch 7418244 08 40207029300 1 2930 5 06 0300000040 SOCKET 40 05 40401007330 TRANSISTOR A733 2 04 6 40401010610 TRANSISTOR C1061C OR D880 05 40401009450 TRANSISTOR 2580945 I
8. 2G1 6kg IADW 6000E C2G1 10kg IADW 15KE C2G1 20kg IADW 30KE C2G1 35kg 6 S S HEX SCREW 6 x1 x20 4 9 S S SCREW 4 x 0 7 x 10 8 10 PLASTIC PLATTER SUPPORT DW SERIES 11 PLASTIC PLATTER DW SERIES 12 PLASTIC SCREW 6 x 1 x16 M06016D PA66 13 PLASTIC PLATTER CAP NBS SERIES M 16 14 S S PLATTER DW SERIES 251 x 216 x 0 8t 15 FLAT CABLE 20PIN 40cm 16 BATTERY WIRE 2PIN 25cm 17 RECHARGEABLE BATTERY GP4 6 6V 4Ah 19 BATTERY CAP DW SERIES ABS TRANSPARENT 20 S S HEX SCREW 5 x 0 9 x 12 2 21 DW 12 X 22 SCREW 3 x 10 TAPER 4 2 23 PANEL PC GW SERIES 135 5x45 5x0 8 2 24 OVERLAY ADW E SERIES 25 P C B REAR DISPLAY DW 40 X 26 REAR PANEL ADW E SERIES 27 BUBBLE LEVEL D14 28 NAME STICKER ADW E SERIES 29 UNDER CABINET DW SERIES 32 D C JACK DC 343 BLACK 33 SCREW 2 x 6 TAPER 2 34 PLASTIC ADJUSTABLE FEET DW SERIES M8xW 28x28 4 35 ADJUSTABLE FEET RUBBER DW SERIES W16x3 5t 4 37 S S SCREW 3 x 12 TAPER 6 25 APPROVED NO REV DRAWING NO ADM ADW M 01 A DWG NAME ADM ADW SERIES SEALING DIAG RAM ADM ADW SERIES SEALING DIAGRAM SEALING POSITION 26 Page 6 1 Deleted 9030 10 23 1998 7 34 00 PM Model Number AHGM Series Capacity 1 5 30kg External Resolution 1 3000 Page 6 2 Deleted 9030 10 23 1998 7 34 00 PM Maximum Tare Range 33 33 of Page 6 3 Deleted 9030 10 23 1998 7 34 00 PM Power on Zero Range 2105
9. 4 a gt 4 op g c37 02 023 iis NRZ 7 E D R43 871 3a a 2285 A pL d 5 ti RI R2 2 R38 RIS R16 C25 m T 45 usa J MS 09 282g n a x ce 8 oo AC IN E W NA Mr DW 12 1 201 Bir 91 08 12 MAINBOARD ADW E DW 12 1 TOP OVERLAY ewe 1803 td ES A O sada Na 80 aay Le 2803 en MAINBOARD ADW E DW 12 1 BOTTOM OVERLAY 177 m EAR DISPLAY DW 40 1 TOP LAYER 1 08 EAR DISPLAY DW 40 1 BOTTOM LAY ER 18 NRI LEDB1 D4 Di EJ 20 05 2 a 15 EJ LEDB2 EJ D3 li DISPI DISP2 5 LEDB3 1 JI DW LED 40 1 2001 03 21 REAR DISPLAY DW 40 1 TOP OVERLAY 19 5 BILL OF MATERIAL STRUCTURE Parts No Description Specification Qty Remark E1ADM000010 KIT DM DW C 11 1 MAIN BOARD 1 1ADM001000___ P C B KIT DM DW C 41 1 REAR BOARD_______ Me ee gt Deleted 10002030 51 A0002030 LOAD CELL C2G1 1 _ ADW 1500E C2G1 3kq ADW 3000E C2G1 6kg ADW 6000E C2G1 10kg ADW 15KE C2G1 20kg ADW 30KE C2G1 35kg A6010230950 ADAPTOR 230V 9V 500mA G0001DW0100 UPPER CABINET DW SERIES WHITE G0001DW0000 UNDER CABINET DW SERIES GRAY F00
10. 5 C1061 and ZD1 8 2V for about 7 volts The charging current will godown automatically whenvoltage reached Q3 C945 and R41 1 2R 1 2W provide Over Current protection 5V power drives digital circuit system U6 NS2950 5 is a 5volts Voltage Regulator 5V power drives analog circuit system U4 NS2950A is a 5volts Voltage Regulator 3 2 3 2 3 2 3 2 3 2 Auto off If the scale is set with 4_oFF or even under LO BAT situation after fixed time interval CPU will release a low potential signal to draw down 02 then 01 cuts off the scale will be shut down immediately Low Power Detection The Q6 A733 is designed to detect the power level When battery powerislessthan5 5V thecollectorpolewillbecomehighpotential then CPU will instruct LCD display to show LO BAT symbol 1 2 Input voltage 5 5V or higher Check and recharge battery if voltage is less than 5 5V 1 3 System voltage Vcc 5V 10 Check that the system voltage is within 5V 10 a less than 4 5V the CPU may not work properly b more than 6V ghost will appear on LCD 2 Platform Stopper Checking The platform device shall not touch anything around itself during operation Check that the platform is not contacted with the upper no load and or lower with load stopper 3 LED Display Checking 3 1 Check that every LED module is soldered properly onto the main board 3 2 Check whether segment of LED modul
11. 94 99 nP JD 97 D 3 yit x DISP LNS673 nise Lw5673 41 8 2 E A P C S m lt uN m unm cl 1D B O No 4 12 7 JI a 05 JI 3 No IDO U gt 11D nm LEDBAR 14X8 AR i HI 9 s xr c o Eo NS D4 ZERO 11712193 NRI 220R wove won vee ji J1 29 w e Mos TARE FD LOBAT lt Title DW LED DISPLAY Drawing No Revision DW 40 1 Size A3 Sheet 1 of 1 Date 90 03 21 Drawn by 2 4 5 7 8 9 15 rwe 06 e NR7 9 R5 R SE ca Rn AM WA RB PEE e c EDS c50 s Y Y M Ra Ev ms 07 ECB ECB ECB R47 Dan m HE R45 ECB C49 anf i an s T T R4
12. MAINTENANCE MANUAL ADW E SERIES CONTENTS 1 INTRODUCTION 2 SPECIFICATIONS 2 1 SYSTEM BLOCK DIAGRAM 2 2 PHYSICAL LAYOUT OF ELECTRICAL CONNECTION 2 3 GENERAL SPECIFICATIONS 2 4 INTERNAL SETTINGS AND CALIBRATION METHODS 3 TROUBLE SHOOTING 3 1 TROUBLE SHOOTING LOOP 3 2 PARTS AND COMPONENTS TROUBLE SHOOTING I 4 ELECTRICAL CIRCUITRY 4 1 SCHEMATICS 4 2 PCB LAYOUT 5 BILL OF MATERIAL 6 APPENDIX OCT 2002 REV 1 Specifications and Function Subject to Change without Notice 1 INTRODUCTION The ADW E series is designed and programmed according to the OIML R 76 Class III requirements This scale is sealed to prevent unauthorized access to internal parts Ender users should be advised not to undertake any trouble shooting except those listed on the operation manual This maintenance manual contains of certain information that may result in fraudulent use Do not release any part of this manual to any end users or un authorized persons The internal mini jumper should be so set to prevent un authorized settings or alternations Should a load cell has been replaced make sure that the protection devices are properly set After servicing it is necessary to go through all tests and procedures to ensure the scale meets all the meteorological and approval requirements Here are some features of the ADW E series De
13. e is ruined 4 CPU Checking 4 1 Check that all pins are seated properly into the socket 4 2 Check that the Crystal Oscillator works 4 3 Check the RESET is normally low 5 A D Unit Checking 5 1 Check that the 5V powers are correctly fed to the A D unit 10 3 2 5 2 Check that the signal output of loadcell is normal 3 2 5 3 Check OP Amplifiers amp A D Converter AD7705 When no error is found with the above checking procedures the trouble can be caused on the loadcell or the PCB itself Replace a new on could be better to identify the defective Inthis way the readout of weight would be varied because of the output voltage of loadcell and different span value so re calibration is required after this replacement de E 4 ELECTRICAL CIRCUITRY 4 1 SCHEMATICS CAL RB 39 caL Lock ADJ 24 1 24 2 E A 4 Dss an gt AISIS pues da p24 5 2K gt gt 4 5 NRGA NRSD 47K 47k PIE 24 6 gt 5 gt NO4 gt 4 7 gt 02 0 m ae No 4
14. gt 4 2 6 4 t D u gt 4 4 16 ET o o b o o Ye A 2 A waaved 9 No 7 gt 4 18 we M M D s T No 2 gt 4 20 1 AA weave uenoo 47K 05 Za wor lt 7 ul w PAS p AEN Title Fe 06 E c DW LED MAIN 07 AA TARE 2 Drawing No Revision 08 PECES DW 12 1 ANGLE Size Sheet 1 of 3 Date 91 08 12 Drawn by 4 5 6 7 8 9 12 us 5VA 2855 EMIS A D55306 471 A pr mr 5 cyp I CON 6P WF 2 Y GND lt gt E ro BRDY 4 PAW 5216 gt 45VA quz E i HH ls Jesse n XT A AD7705 5 SET owo AINI 52 c2 a E 1042 X7R 1042 x7R B DIN 1 gt 7 208 lt 7 gt ANM DOU iD PZ V 5 S ANI DRDY 1008 gt INTO ES 45V b SCLK lt INT Era MEME WCLK GUT 5 xi x2 1oor 100R 11
15. he The refers tothe instructions fromthe keyboard nd then conveys the output data to LED driver which formats the data nto readout on the display panels 2 2 PHYSICAL LAYOUT OF ELECTRICAL CONNECTION OPTIONAL RI DC JACK TO BATT MAIN BOARD DW 12 X a pate aad RS 232 BOARD DM 70 1 2 3 2 Dimension Platter size 250 x 215mm Overall size 270 W X 278 D X 145 H mm 2 3 3 Model Specifications Model Number Capacity Max Division e lapw 1500E 15004 0 54 ADW 3000E 30009 19 ADW 6000E 60009 29 ADW 15KE 15kg 0 005kg ADW 30KE 30kg 0 01kg Approval Class III Maximum Tare Range 0 _ Power on Zero Range 10 Max Manual Zero Range 22 Max Min Load 20e Operation 0 40 C 32 104 F POEMA Non condensed R H 85 Power Consumption 0 5W when charged 2 3 4 Main Components Used SM8 958 Microprocessors Crystal Oscillator Display Device WIN Load Cell Capacity 2 3 5 Analog Specification 11 0592MHz Liquid Crystal Display ADW E 1500 3kg ADW E 3000 6kg ADW E 6000 10kg ADW E 15K 20kg ADW E 30K 35kg he maximum number of verification scale intervals will be Power supply of 5 V DC lt 3000 for class GD instruments 16 bits serial digital output Excitat
16. ion power supply for the load cell is 5 DC Input impedance of the load cell is 350 Q The analog data processing unit is built a closed metal box 2224 Deleted q Model Number Deleted Maximum Tare Rar 9 i Deleted Power on Zero R Tes Deleted Manual Zero Rang 2 4 CALIBRATION METHODS AUTO CALIBRATION om Q Turn scale off Press and hold MODE then press ON ZERO Scale display CAL Press for YES and scale will self calibrate zero point After zero point is calibrated Scale will displays LOAD XXXX or YYYY For is about 1 3 of the full capacity and YYYY is 2 3 of the full capacity Load the weight according to scale Wait until the scale display donE and start counting down Calibration is completed and scale will display the weight 3 TROUBLE SHOOTING 3 1 TROUBLE SHOOTING LOOP POWER ON DISPLAY RANDOM FIGURE NO DISPLAY ECK CPU EGMENT I ECK POWER SUPPLY CHI SW 7 5 00000 COUNTS AND THEN ZERO CHECK LOAD CELL OK A D UNIT OFFSET VALUE UNSTABLE N ERO DRIFT pee HECK POWER UPPLY A D UNIT AD SOLDERING EMP EFFECT PROPER READOUT HECK PLATT TOPPER LOAD ELL A D UNIT AD SOLDERING R
17. signed to meet OIML R76 class III requirements Zero Indicator Net Indicator Negative Value Indicator to Tare Function wer on Zero Function nual Zero Function tended Display Function to Power Saving Function tric Avoirdupois Conversion Function Low battery warning signal Single points Calibration Mini jumper to prevent end user calibration Optional EL backlights Optional RS232C interface Optional Rear Display Built in rechargeable battery operated Battery operating time 200 hours plus after charged lt U 1 2 3 4 D 6 7 8 9 OS XWOS Se 15 JOU BW NRO 2 2 1 SYSTEM ti BLOCK DIAGRAM LED DISPLAY p H un ry gt K DISPLAY DRIVER CIRCUIT ft gt CPU with ROM INTERFACE ER SUPPLY AC ADAPTOR KEYBOARD 9V 500mA 4 KEYS RECHARGEABLE BATTERY 6V 4Ah Description When amass is placed the platform the load of the article is applied to the load cell inside it The resista Q t is ampli managedbyt a i nce to the excitation current in the strain gauge will then hanged and the analog output signal varies fied and digitized continuously by the A D converter into digital signal Subsequently the resulting count is processed and
Download Pdf Manuals
Related Search