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KERN ABT - FineMech

1. 2044 39 5 1 5 After Physical Adjustments 00001 41 5 2 Linearity Adjustment of ABTxx 4M Series Balances 43 5 2 1 Inputting the Linearity Adjustment Weight Values 43 5 2 2 Linearity Adjustment rer 43 5 3 Linearity Adjustment of ABTxx 5DM Series Dual range Balances 44 54 Calibration of Built in Weight PCAL 45 5 4 1 Inputting Conventional Mass Values of the External Calibration Weights to be Used im PCAC ai ttc ues oes rere tuat Lem 45 5 4 2 Performing Calibration of the Built in Weight 0 45 5 5 Span Calibration by Built in Weight ICAL ces 45 5 6 Using Data Edit Mode Edit in Service 46 6 Structure and Components 47 7 Maintenance Parts List and Special 0 51 ABT SH e 1011 3 1 Service Menu For general operations please refer to the ABT Series instruction manual 1 1 Entering the Service Menu Set the balance to display the mass Press and hold the ON OFF key and 1d 10d key together for 3 seconds The mass display remains unchanged 3 Within 10 seconds press and hold the CAL key and PRINT key together
2. nee 19 3 3 6 External Input Output Failure 20 4 ewan er e EROR EROR ERO 21 4 1 X General Precaution and Information when Disassembling and Assembling 21 4 2 Balance Internal 22 4 3 Replacing Component een 28 4 3 1 Replacing Main Board 42 28 4 3 2 Replacing Interface Board 41 29 4 3 3 Replacing Display Board Assy 40 29 4 3 4 Replacing Weight Loader Assy 11 30 435 Replacing Unit Assy 2 re ose Eee t ode Ce tenete 30 4 4 Unit Assy 2 Disassembling Assembling Force Coil Assy L4 Detector Board Assy U4 fseplacerehl oracio cioe eiecti and exeo tacente andes 31 4 5 Case Assy 3 Components 35 tats ee ae tee as tat e Died 36 5 1 Physical Adjustments of Unit Assy 36 5 1 1 Adjusting the Height of Detector Board Assy 4 36 51 2 Tit Error Adjustment HH 36 5 1 3 2 38 5 1 4
3. How to cancel the CAL E4 press ON OFF key Main causes 1 The set weight value is incorrect 2 The weight loading system is not operating properly 3 The power supply voltage is low 4 The sensor board assembly W15 of Weight Loader Assy B11 is failed Remedies 1 Check the calibration weight value and the set weight value gt f the values differ correct the set weight value execute span calibration 2 Replace the weight loading system cable lock the motor shaft 3 Replace the faulty AC adapter 4 pin cable C46 between Interface Board C41 and Main Board C42 10 pin cable C43 between Main Board C42 or Display Board C40 4 Replace the sensor board assembly W15 photo sensor of the weight loading system ABT SH e 1011 15 Flowchart CAL E4 Display 16 CAL E4 Display Select int w SEt in the Service Menu operate the weight loading sysytem Weight loading system operating No Switch off the power supply open the case eight loading system cable Connected Display the power supply voltage 12V Lower Replace the AC adapter I F board MAIN borad 4pin cable is faulty gt Replace MAIN board DISPLAY board 10pin cable is faulty gt Replace Disconnected Connect the cable Operates Stops correctly Photo sensor failure gt Replace Weight is not loaded in the corr
4. ABT SH e 1011 3 Representative Troubles and Error Messages 3 1 Representative Troubles and Remedies a Nothing appears in the display b Missing numbers and or symbols in the display c Keys do not operate d oL or oL is displayed e Large linearity error ABT SH e 1011 Probable cause Remedy Causes are listed not in the order of probability but in the order of ease of checking Correct power is not supplied Check the power supply and connect correctly adapter able C43 is disconnected Connect the Cable C43 correctly Display Board Assy C40 is Replace Display Board Assy failed Display Board Assy C40 is Replace Display Board Assy failed Display Board Assy C40 is Replace Display Board Assy failed Pan 5 and or Pan supporter Install Pan supporter assy and Pan assy 4 are not installed correctly Pan is loaded exceeding the Use the balance within its capacity weighing capacity Foreign object is contacting Clear the gap between Pan and Pan 5 and Anti draft ring 6 Anti draft ring Anti draft plate 11 is not fixed Remove dusts and position and fix correctly Dust exists between Anti draft plate correctly Anti draft plate and Pan supporter shaft XX able U26 is disconnected onnect Cable U26 correctly able U43 is disconnected onnect Cable U43 correctly Pt Ni band U14 is Replace Pt Ni band U14 Solder twisted bent badly soldered Pt Ni band
5. Refer to Table A for the calibration weight value and adjustment standard of each capacity model First adjust with the larger weight value so that Step 1 standard is met then proceed to Step 2 with reduced weight value Check and if necessary adjust further until Step 2 standard is met Also follow the below described procedure and warnings The position s of UniBloc corresponding to the corner load error observed are to be ground off slightly by using the tool for corner load adjustment J8 and J9 in the jig set Fig 7 ABT SH e 1011 39 Weight position for checking ON Adjustment procedure and warnings Warning Do not grind the areas within 3mm from the side edge of UniBloc in order to prevent deformation of the edges Warning Be careful not to bend the flexures of the block Warning Metal dusts generated in this operation must be removed without falling and entering into the gaps of the mechanism Use adhesive tape to remove them Warning DO NOT grind at X positions within 3mm from the edge First B F direction then L R direction Start with a very slight grinding at 2 or 5S position and observe the change in corner load checking Warning In this adjustment the UniBloc is relatively less sensitive in the B F direction Corner load Shifts in the B F direction require more grinding to the flexures than L R direction s The effect of adjustment of each a
6. display No Yes _ Cable U26 failed gt Replace Cable U26 sensor Assy cable bad soldering gt Solder correctly Temp sensor failed gt Replace Tmep sensor Assy Detector Board failed gt Replace Detector Board Assy Main Board failed gt Replace Main Board Assy Display Board failed gt Replace Display Board Assy End ABT SH e 1011 19 3 3 6 External Input Output Failure Main causes 1 The cable used to connect the external instrument is incorrect 2 The communication specifications of the balance and external instrument do not match 3 Cable C44 Cable C45 between Display Board Assy C40 and Interface Board Assy 641 are failed 4 Interface Board Assy C41 Display Board Assy C40 are failed Remedies 1 Use an RS 232C Null modem cable printer attachment cable 3 Replace Cables 3 Ensure the communication specifications are matched 4 Replace Interface Board Assy C41 Display Board Assy C40 Flowchart External input output failure External input External output have failed Cable is correct No Printer Use printer attachment cable Yes connection RS 232C reverse cable Check the communication specifications of the external instrument are matched Baud rate Parity etc Match the communication specifications Display Board J6 connector Interface Board J7 connect
7. when moving the balance Fig 3 Make certain not to give any impact when placing the balance on the table ABT SH e 1011 21 4 2 Balance Internal Inspection Preliminary Check 1 Check the balance performance to confirm whether it is working correctly 2 Enter the service menu refer to 1 1 check the following Check1 Check the bAt reading power source voltage AD value bAt 11 0 to 13 0 Ifthe roading is out of this standard range the power source voltage of the AC adapter electrical system is abnormal Check2 Check the tAd reading temperature AD value If it is within the standard range check if the reading drifts gradually according to the temperature tAd 400 000 to 700 000 8000 tAd 1 C Ifthe reading has drifted from the standard range or if the reading does not change the temperature sensor is not working correctly Check3 Check the wAd reading Check the Zero and sensitivity are within the below ranges check the repeatability deviation Model Zero Loaded ABT 220 5DM Approx 6 000 000 7 000 000 Approx 46 000 000 47 000 000 200g ABT 120 5DM Approx 12 000 000 14 000 000 Approx 52 000 000 54 000 000 100g ABT 320 4M Approx 8 000 000 9 000 000 Approx 56 000 000 57 000 000 300g ABT 220 4M Approx 6 000 000 7 000 000 Approx 46 000 000 47 000 000 200 ABT 120 4M Approx 12 000 000 14 000 000 Approx 52 000 000 54 000 000 100g This t
8. Lever Assy U1 from the top of the unit then ABT SH e 1011 11 12 13 14 Inserting the gap setting shim J3 between Lever limit bar U52 Compenents2 and Lever toppar UL al lock Lever stopper U7 in position by the two M3 x 8 screws U19 Fig 34 Position the hole of Stopper plate U6 at the center of Lever pin U51 Components2 Lock Stopper plate U6 temporarily in the position by the two M3 x 6 screws U20 Fig 37 Lock Lever Assy U1 in the position with the two M4 x 55 hexagon socket head screws U15 and M4 nuts U23 Fig 35 Warning Insert the M4 x 55 hexagon socket head screws U15 in the direction shown in Fig 35 Bolt head should be this side in the photo Look through the top of the unit Align the centers of Magnet Assy U41 and Force Coil Assy L4 Lock Force Coil Assy L4 by the M2 5 x 6 screw L10 and PB SPG M2 6 washer L11 Fig 33 Remove any dusts on the four Magnet covers U29 Slide each one into position and lock them by the four M2 5 x 6 screws U30 Fig 34 on the needs loosen and lock Lever stopper U7 in position by the two M3 x 8 screws again Fig 32 inserting the gap setting shim J3 between and Lever stopper U7 Lever limit bar U52 Compenents2 Fig 34 Solder the two Pt Ni bands U14 on the Lever Assy U1 side Fig 35 Warning When soldering tilt it uoward to avoid the Pt Ni band contacting Lever Assy Us
9. SENET Loosen Stopper plate U6 again Remove nie Devon pin J1 from Unit me 2 Then position the hole of Stopper piale i 6 at the center of Lever pin U51 Fig 36 igen the two M3 x 6 screws U20 gradually while moving ever Assy up and down at the balance weight shaft end A in 49 26 so that Stopper plate U6 can be fixed without contact with Lever pin U51 Lock it in position by the screws 020 Attach Detector Board Assy U4 temporarily by the two P3 M3 x 8 SEMS screws U36 clamp cable detector 12 pin U26 and cable sensor 2 pin U35 by the wire clamp U27 Fig 35 Warning Clamp the cable detector 12 pin U26 so that it does not move even when pulled by the end Solder the temperature sensor U47 cable to Detector Board Assy U4 Fig 36 Warning MT Yellow wire MG Blue wire ABT SH e 1011 33 Fig 35 15 Gently shake Unit Assy 2 holding the outer die cast part If the Lever Assy U1 makes a clear sound with resonance as it strikes Lever stopper U7 the assembling of Unit Assy 1 is complete Warning If a clear sound cannot be heard it is possible that Lever pin U51 and Stopper plate U6 or Force Coil Assy L4 and Magnet Assy U41 are contactin or having dusts In such cases readjusting the positions are required 16 Proceed to 5 1 1 Adjusting the Height of Detector Board Assembly 04 17 Attach Unit Assy 2 to Base Assy B1 by reversing the procedures descri
10. after corner load adjustment If the mechanism has not been stabilized linearity adjustment may not be effective After corner load adjustment leave the balance for more than one hour to stabilize it before conducting linearity adjustment 5 1 5 After Physical Adjustments When parts have been replaced and necessary physical adjustments instructed in 5 1 have been performed adjustments by software have to be performed The procedure is a Temporarily disable the error message function to skip unnecessary error messages during adjustments that would block further adjustment operation b Control parameter adjustment only when Main Board Assy has been replaced c Linearity adjustment external calibration weights are necessary ABTxx 5DM models computer connection and special software 5 erform PCAL calibration of the built in calibration weight e Power reset the balance has to be plugged off once f Resume error message function lt How to disable error messages gt 1 Enter Service Menu refer to 1 1 and select Edit 00 appears One X represents one hexa decimal number 0 to F The two digits left of indicate the address in EEPROM The right four digits are the data of the indicated address and the next address 2 Pressing CAL key once moves to the display of the next two addresses Repeat it until the address shown is 4A 3 The data here 0100 has to be chang
11. correctly The hole of Stopper plate U6 is Position and lock Stopper plate contacting with Lever 051 correctly without contacting with Lever pin Lever stopper U7 and or Position Lever stopper correctly and Detector Board assy U4 are not adjust hight of Detector Board assy correctly positioned correctly Main Board Assy C42 is failed Main Board Ass earth leak Force Coil assy 14 and dusts and position Force Coil assy 041 are contacting directlyjassy correctly or with dusts Unit Assy 2 is damaged Replace Unit Assy Linearity adjustment was incorrect Perform linearity adjustment correctly Inputted calibration weight value fusing accurate calibration weights was not correct in linearity adjustment Essentially poor repeatability is causing the symptoms Repeatabilit Check drift and refer to f Drift the symptoms is causing the symptoms refer to h Corner load error Span calibration has not been Perform span calibration performed correctly Damaged EEPROM data Input the data with the Adjustment S W Unit Assy 2 is damaged If the error is under XXXX replace Unit assembly Warm up is insufficient Warm up sufficiently Direct sunlight or air current from Change the balance installation site heater or cooler exist Remove sunlight air current The installation site has been Warm up sufficiently and perform span changed calibrati
12. during span calibration 2 Close the weighing chamber glass door when executing span calibration 3 Place the balance to a vibration resistant workbench Do not touch or shake the workbench during span calibration 4 Wait until vibration has stopped execute span calibration 5 Replace Detector Board Assy U4 6 Remove dust from Force Coil Assy L4 and Magnet Assy U41 7 Remove dust from Unit Assy 2 8 Replace Unit Assy 2 17 Flowchart CAL d Display CAL d Display Release CAL 4 display by pressing lt power gt key evel adjustment attempted during calibration No Windbreak door open No Workbench unstable arge vibration occurred Transfer balance to wind free vibration free location Check windbreak door is closed Do not touch the balance workbench during calibration Avoid creating large vibration Foreign objects between Anti draft ring and Pan gt Remove foreign objects Main Board J3 connector disconnected gt Connect correctly Cable U26 failed gt Replace Cable U26 Pt Ni band bad soldering gt Solder correctly Temp Sensor Assy cable bad soldering gt Solder correctly Stopper plate and Lever pin in contact gt Remove dusts Install correctly Lever limit bar is contacting Lever stopper gt Remove any dusts Adjust height of Detector Board Assy Force Coil is broken has leakage gt Replace Force Coil Assy Detector B
13. loader sensor 2 W13 and cable weight loader motor 2 to Display board C40 of Case Assy Insert cable detector 12 pin U26 through the slot hole in the rear panel of Case Assy 3 5 Lower Case Assy 3 towards Base Assy B1 avoid trapping the cables Position the balance on top of a workbench with the front display section protruding just over the edge as shown in Fig 16 Lock the balance bottom panel by the two M4 x 30 SEMS screws 16 Fig 16 6 Connect cable detector 12 pin U26 to the Main Board Assy C42 Fig 17 Fig 17 Fig 16 26 ABT SH e 101 1 7 8 9 10 11 Lock Case Assy 3 by the single M4 x 45 hexagon socket head bolt 17 inside the rear case aSsembly frame Fig 18 Lock the rear panel 8 to rear frame of Case Assy 3 by the four M3 x 5 Truss screws 28 Fig 19 Fig 18 Fig 19 Position the anti draft plate 11 with the positioning jig J4 lock it by the two M2 5 x 6 SEMS screws 9 Fig 20 Set the pan supporter assy 4 pan 5 and anti draft ring 6 inside the weighing chamber Fig 21 Adjust the two level screws B2 until the bubble of the level indicator is in the center of the red circle and the balance is level Connect the AC adapter to the balance and check the balance operation Fig 21 ABT SH e 1011 27 4 3 Replacing Components Display E Fig 22 Table 2 Replacement Compone
14. long nose tweezers for loading and unloading weights do not put hands inside weighing chamber 2 1 Repeatability Load a weight shown in Table 1 of any preference on the center of the pan and take it off 6 times and record each reading Determine the repeatability uniformity Rx Ry of the zero point status and loaded weight status Rx X max Xmin X6 Ymax Ymin 2 Y2 Ye 2 2 Corner Load 1 Prepare one of each weight shown in Table 1 2 Place a weight in the pan center 1 and then in each position in order 2 3 4 5 at distance of 1 2 x pan radius as shown in Fig 1 Return the weight to position 1 and record the displayed values 3 If the differences between the value measured in the center location and each of the other locations is within the standard value the balance cornerload performance is considered normal Example 3 position difference 3 display value average value of 2 x 1 display value 6 ABT SH e 1011 2 3 Linearity 1 Conduct ECAL Span Calibration by External Weights according to the instruction manual procedure 2 Load weights in order shown in Table 1 and record the readings when the display has stabilized 3 Calculate the error of each loaded weight Error display value of each loaded weight average zero point reading before and after linear adjustment true value of weight corrected values 4 If the error
15. of Unit Assy 2 4 Adjust the two Level Screws B2 until the bubble comes to the center of the red circle Connect the AC adapter to the balance 5 Enter Service Menu and display wAd See 1 1 Entering Service Menu 6 If the values are outside the Balance Adjustment Guide in Table 1 insert UniBloc protection pin J1 into the lever locking hole in UniBloc of Unit Assy 2 loosen the nut locking the balance weight L17 of Lever Assy U1 7 If the display reading is slide the balance weight L17 to the right in Fig 2 If the display reading is slide the balance weight L17 to the left 8 When the adjustment is complete lock the balance weights L17 Fig 2 Table 1 Balancing Adjustment standard wAd 2 Weight loaded ABT 220 5DM Approx 6 000 000 7 000 000 Approx 46 000 000 47 000 000 200g 120 5DM Approx 12 000 000 14 000 000 Approx 52 000 000 54 000 000 100g ABT 320 4M Approx 8 000 000 9 000 000 Approx 56 000 000 57 000 000 300g ABT 220 4M Approx 6 000 000 7 000 000 Approx 46 000 000 47 000 000 200 ABT 120 4M Approx 12 000 000 14 000 000 Approx 52 000 000 54 000 000 100g Warning After completion of the adjustments the adjustment conditions of both Tilt error adjustment and Balancing adjustment must be met at the same time 38 ABT SH e 1011 5 1 4 Corner Load Adjustment 1 Follow steps 1 to 8 of
16. plate U6 and Lever pin U51 do not come into contact with each other and there is no dust between them Fig 10 If there is contact or dust loosen the two x 6 screws 020 and adjust the Stopper plate U6 position Remove any dust Check there is no earth leakage from Force coil assy L4 and the wires are intact and not broken Connect multimeter test leads to the coil frame and relay terminals check there are no signs of earth leak or broken wires If there is an earth leak or broken wires replace with a new Force coil assy L4 See 4 4 Unit Assy Disassembling Assembling Check the solder of Detector Assy U4 and Temperature sensor U47 is in good condition Fig 10 Ifthe solder condition is poor rewire the Detector Assy Temperature sensor Warning MT Yellow wire MG Blue wire ABT SH e 1011 7 Remove the two M4 x 8 SEMS screws B29 Remove the Weight stopper B22 and take out Calibration weight 26 beneath it Fig 11 Warning Do not damage Unit Assy 2 when removing Calibration weight 26 Warning Do not scratch or contaminate Calibration weight 26 8 In Unit Assy 2 insert UniBloc protection pin J1 of the Jig set into the lever locking hole down to the scribed line Fig 13 Warning Insert the UniBloc protection pin J1 by carefully lifting the Lever Assy void touching the elastic fulcrum Fig 11 Fig 12 Check7 Check the Pt Ni band U14
17. roof lock it by engaging the M4 nuts C22 with the two threaded rods C52 Fig 37 Note Tightening torque 18 kgfxcm Lock Base Assy B1 and Case Assy 3 by following procedures 4 to 9 in 4 2 Balance Internal Inspection Assembling Mount Door Rails left C9 right C8 to the rail grooves in Case Assy 3 Insert Glass Door Assy left C4 right C5 roof glass set C38 from the rear of Case Assy 3 Attach Knob s C39 inside the weighing chamber ABT SH e 1011 35 5 Adjustments 5 1 Physical Adjustments of Unit Assy 5 1 1 Adjusting the Height of Detector Board Assy U4 1 Remove Unit Assy 2 from Base Assy B1 by following the procedure described in 4 3 5 Replacing the Unit Assembly 2 2 Disconnect Cable 2 U35 from Detector Board Assy U4 connect Cable detector 12 pin U26 to Main Board Assy C42 3 Connect the voltmeter terminal to Detector Board Assy U4 CP1 pin and the voltmeter terminal to the CPG pin 4 Remove UniBloc protection pin J1 from the lever locking hole in UniBloc of Unit Assy 2 5 Connect the AC adapter to the balance turn ON the power 6 Slightly loosen the two P3 M3 x 8 SEMS screws U36 fixing Detector Board Assy U4 Move Lever Assy ny up and down gently holding the balance weight shaft A in Fig 31 4 4 Movement is limited as Lever limit bar U52 hits Lever stopper rage Lock Detector Board Assy U4 by the two P3 M3 x 8 SEMS
18. solder is in good condition and the band is not twisted or bent Fig 13 solder condition is poor or if the band is twisted or bent replace with a new Pt Ni band Check8 Check Unit Assy 2 fulcrum sping f point spring and parallel guides are not bent or damaged Fig Replace Unit Assy 2 See 4 3 5 Unit Assy 2 Check9 Check the calibration weight 26 is free of dust Remove dust ABT SH e 1011 25 Assembling after internal inspection 1 Remove UniBloc protection pin J1 from the lever locking hole in Unit Assy 2 Warning Remove the pin by carefully holding the lever assy U1 horizontally Do not touch or press the elastic fulcrum 2 Gently place the calibration weight 26 around the Unit Assy s pan supporter shaft 53 and lock the weight stopper B22 by the two M4 x 8 SEMS screws B29 Fig 14 Warning Do not give any impact to the Unit Assy when removing or placing the calibration weight Warning Do not scratch or contaminate the calibration weight 3 Pull out cable weight loader sensor 7 pin W13 cable weight loader motor 2 pin W17 cable detector 12 pin U26 from the grooved section of the Base Assy B1 as shown in Fig 15 Lock unit cover B14 to base B1 by the eight M3 x 6 SEMS screws B19 Avoid trapping the cables Fig 15 Fig 14 Fig 15 4 Position Case Assy 3 on the left side of Base Assy B1 Connect cable weight
19. 4 2 Balance Internal Inspection Disassembling to separate Case Assy 3 and Base Assy B1 Remove Calibration weight 26 Place Pan 5 back after this 2 Connect Cable detector 12P to Main Board C42 and plug the balance to the power skipping the calibration Fig 5 3 Place external calibration weight s for corner load adjustment in the center of the pan then press TARE key to zero the display Zero tracking function must be turned off For ABTxx 5DM series only large range 0 1mg readability is required for corner load adjustment When reading the display cover the mechanism to prevent influence of air flow Fig 6 4 Move the weight s to the directions of left right front back record the readings WP A 2 For each position place the weight just inside the inner circle of Pan Fig 6 Warning When UniBloc has been irreversibly damaged this corner load adjustment will not bring it back to adjustment standard In such case replacement of Unit Assy is necessary Excessive grinding in this adjustment also damages UniBloc irreversibly If both B and F or both L and R show plus value corner load errors or both minus it is NOT adjustable When repeatability at zero or zero return performance is not normal corner load adjustment cannot be effective 5 Grind slightly the flexure s of upper parallel part of UniBloc in Unit Assy according to the result of the above checking
20. ABT 8001 Level Indicator Level Set RABT 8015 Front Glass Front Glass RABT 8004 Glass Door Assy left Side Glass Set Left RABT 8007 Glass Door Side Glass Set Right RABT 8008 Assy right Door Rail left Side Rail Left RABT 8014 Display Panel Cover Display Panel RABT 8003 Key Panel Sheet Panel ABT Series RABT 4001 Front Pillar set Front Pillar 2 piece set RABT 8005 Glass Door Roof Glass Set RATE Assy top Display Board Display Board Ass RABT 2001 Interface Board Interface Board Assy RABT 2006 Assy C42 Main Board Ass Main Board Assy ABT 220 4M RABT 2003 Main Board Ass Main Board Assy ABT 220 5DM RABT 2004 Main Board Assy Main Board Assy ABT 320 4M 2005 ADEs Zi Unit Single Cell ABT 320 4M 4 Anti draft Plate ind Shield Plate 83mm RABT 6005 RABT 4005 Door Rail right SideRailRight 8013 RABT 8006 ABT 120 4 120 5DM ABT SH e 1011 Detector Assy included Detector Assy included Detector Assy included Detector Assy included Detector Assy included Level Cover RABT 8002 Without Front Pillar Without knob 51 U4 Detector Board Detector Board Assy RABT 2007 7 5 014 Pt Ni Band Pt Ni Band 5mg cm RABT 5001 U47 Temp Sensor Ass Temp Sensor Ass RABT 5002 Force Coil Ass Force Coil Ass RABT 5003 Label Tamper Label Tamper Evident 20mm RABT 4007 Evident RABT 4008 Upper Case Upper Case Speci
21. After inputting the numeric value press the TARE key to enter 6 The next weight value is displayed Input all the weight values by the same procedure Warning Always input the weight value before conducting linear adjustment 5 2 2 Linearity Adjustment 1 Prepare the weights shown in Table 3 to be used for conducting linear adjustment Place the weights inside the weighing chamber in advance 2 Remove object s from the pan 3 When Lin Adj is displaying in the service menu press the TARE key to display the weight values in the order shown in Table 3 4 Using long nose tweezers load the displayed weight on the pan When the stability mark illuminates press the TARE key 5 Use the long nose tweezers to unload the weight from the pan When the stability mark illuminates press the TARE key 6 The display changes automatically Span calibration is completed when the display returns to mass display Table 3 Calibration weights Model ABT 120 4M ABT 220 4M ABT 320 4M Weights 30g 50g 50g for 60g 100g 100g Linearity 90g 150g 150g Adjustment 120g 200g 200g 130g 250g 250g 300g 350g ABT SH e 1011 43 5 3 Linearity Adjustment of ABTxx 5DM Series Dual range Balances For the linearity procedure on all ABT 120 5DM and ABT 220 5DM semi micro balances a special developed adjustment software is necessary The installation the configuration and the adjustment itself require extensive servic
22. KERN amp Sohn GmbH Ziegelei 1 Tel 0049 0 7433 9933 0 A WAAGEN GEWICHTE BALANCES WEIGHTS D 72336 Balingen Frommern Fax 0049 0 7433 9933 149 E Mail info 9 kern sohn com Internet www kern sohn com Service Manual Electronic Analytical Balances KERN ABT Version 1 1 7 2010 KERN ABT Version 1 1 Service Manual Electronic Analytical Balances Basic Information Grundlegende Hinweise The device must be repaired only by trained specialist staff or personnel with professional formation such as a repair specialist accredited by law concerning verification The service manual is obligatory for repair work After repair original conditions of the device have to be restored Only original spare parts should be used Instructions about conformity evaluated scales Repair must be carried only at 100 compliance with the type approval A violation of this specification will result in a loss of the type approval After successful repair the balance will have to be reverified before it can be used again in a statutorily regulated field Das Gerat darf nur von geschultem oder beruflich ausgebildetem Fachpersonal z B eichrechtlich anerkannter Instandsetzer repariert werden Die Serviceanleitung ist bindend fur Reparaturen Das Gerat muss nach erfolgter Reparatur wieder in den Originalzustand zuruckversetzt werden Es durfen nur Originalersatzteile verwendet werden Hinweis zu konformitatsbewerteten Waagen R
23. LM Assy yuQ 2 Japeo biom aged Jojeoipuj o 9 2 sen uid 0 jeu amp is ejqe ep 22 10 99 9q z 92 LVI jeuBis p 6 es ssy ese c uid 91929 2 Ae ds a 92 uid 8 OZEZSH aIGeD 679 ABT SH e 1011 50 11 13 26 26 26 26 26 2 B3 B11 C3 C4 C5 C8 C9 C13 C30 C35 C38 C39 C40 C41 7 Maintenance Parts List and Special Jigs Name in the manual Part name for ordering Ben text part name on drawing 2 ABT 120 4M Unit Assy Weighing Unit Single Cell RABT 1002 ABT 220 4M Unit Assy Weighing Unit Single Cell RABT 1003 Unit Assy Weighing Unit Single Cell RABT 1004 ABT 120 5DM Assy Weighing Unit Single Cell 1005 ABT 220 5DM P2 Rubber Cushion Rubber Cushion RABT 6003 Pan Weighing Plate 80mm RABT 6001 Anti draft Ring Wind Shield Ring RABT 6004 Floor Plate Cover Plate RABT 6006 Model Name Label 120 4m_ RABT 4002 Model Name Label 220 4M RABT 4003 Model Name Label 320 RABT 4004 Label Name Label 220 5bM RABT 4006 Level Adjuster R
24. able shows the criterion for inspection before shipping If the mechanical or electrical failure exists wAd values will be largely out of the range and do not change smoothly corresponding to the load on the pan 22 ABT SH e 1011 Procedure of Internal Inspection 1 2 3 4 5 Disconnect the AC adapter Remove the anti drift ring 6 5 and supporter assy 4 from the pela ing chamber no the two M2 5 x 6 SEMS screws 9 detach the anti draft plate 11 19 emove the four M3 x 5 Truss screws 28 locking the balance rear i2 8 detach the rear panal 8 ae the cable sensor 12 pin U26 from the main board assemb s d 10 8 Remove the single x4 exagon socket head bolt 17 from the case assy rear panel Fig 7 Fig 5 Position the balance on top of a workbench with the front display section protruding just over the edge as shown in Fig 8 Remove the two M4 x 30 SEMS screws 16 from the balance bottom panel Disconnect the cable W13 and cable W17 from Display Board and dismount the Weight Loader Assy B11 and Case Assy 3 Fig 8 Warning After M4X30 screws removing move the balance to initial position Warning Be careful not to drop Case Assy when disconnect cable W13 and cable W17 ig N the eight M3 x 6 SEMS screws B19 detach the unit cover B14 ig 9 ABT SH e 1011 23 Check4 Check5 Check6 Fig 8 Fig 9 Check the Stopper
25. al Jigs No Name in the manual Part name for Part No Remarks text ordering Jig set for service 321 62983 J1 J8 set ABTxx 4M J1 UniBloc protection pin OPF fixing pin 774 41089 10 diameter is 774 41089 10 smaller than dash nothing J2 Force coil positioning Coil spacer 774 41211 J3 Gap setting shim Unit ASSY alignment 1774 41101 iig J4 Positioning jig Spacer 0 15mm 1774 41357 J5 Spanner hexagon 0 9 086 03801 02 J6 Hexagon bit M5 774 49034 J7 Driver bit A20 7x55 774 49030 Used for assembling Case Assy J8 Handle for corner load 321 69205 Used for corner adjustments load adjustments J9 Grind stone 321 69206 Used for corner load adjustments 52 ABT SH e 1011
26. alues of voltage and sides within 0 5V Warning Connect the test leads as shown in Fig 31 While pressing and holding down the balance weight shaft end A in Fig 31 of Unit Assy gently adjust the height of Detector Board assy until the output reading shows minus value Reference Detector output CP1 CPG 0 5 3 0V Remove the solder of the cable of temperature sensor U47 connected to the Detector Board assy U4 Fig 31 Release the wire clamp U27 holding the cable sensor 2 pin U35 and cable sensor 12 pin U26 Remove the two x 8 SEMS screws U36 take off the Detector Board assy U4 Fig 30 31 Warning When removing Detector Board assy be careful not to damage the elastic fulcrum by hitting the end of the lever assembly U1 with Detector Board assy Remove the solder from the two Pt Ni bands U14 on Lever Assy U1 side Fig 30 Warning Do not bend or scratch the Pt Ni band Fig 30 Fig 31 Photos are for parts identification purpose only ABT SH e 1011 31 6 7 8 9 10 11 12 Remove the four M2 5 x 6 screws U30 slide out the four Magnet covers U29 Fig 32 Check11 Check if the Force Coil Assy L4 and Magnet Assy U4 beneath U29 are not in contact with each other and there is no dust between them If itis in contact align the center of Force Coil Assy L4 to the center of Magnet Assy U41 If there is any dust on them
27. bed in 4 3 5 Replacing Unit Assy 18 Proceed to 5 1 2 5 1 3 5 1 4 adjustments 19 When Unit Assy 2 has been replaced input the characteristics data of the new Unit Assy 2 into the balance See 5 6 Using Data Edit Mode Edit 20 Adjust the linearity calibrate the built in calibration weight and perform span calibration See 5 2 Linearity Adjustment 5 4 Calibration of Built in Weight 5 5 Span Calibration 34 ABT SH e 1011 4 5 Case Assy 3 Components Replacement Disassembling 1 2 3 4 Open the Glass door Take out Knob C39 of the other Glass door s from inside the weighing chamber Remove the side Glass Door Assy left C4 right C5 and Glass Door Assy top C38 from the rear of Case Assy 3 Remove Door Rail left C9 right C8 from Case Assy 3 Separate Base Assy B1 and Case Assy 3 by following procedures 1 to 5 in 4 2 Balance Internal Inspection Disassembling Turn over Case Ass OF Remove the two M4 nuts C22 and separate the case C1 and case roof cs Fig 38 Warning Be careful not to let Front Pillar C35 and Front Glass C3 fall over uring operation Assembling 1 2 3 4 5 Turn the case over on its roof C51 Insert Front Glass C3 into the grooved section in the case roof C51 and the two Front Pillars C35 into both sides in the direction shown in Fig 37 Place the case C1 on the case
28. d value and actual calibration Refer to 3 3 3 inputted value of weight differ over 2g based on the calibration weight does wAd value not meet the actually placed calibration weight CAL Instability during span After calibration weight is loaded or Refer to 3 3 4 calibration removed stability cannot be reached over 25 seconds approx Err01 Temperature Sensor tAd is under 100 000 or over 700 000 Refer to 3 3 5 failure Err24 Abnormal power voltage Power voltage is under 9 5V Supply correct power Err20 Incorrect numerical input Invalid value is inputted in settings Input correct attempted value oL Loaded exceeding the Loaded 90d over the capacity based See 3 1 d capacity the wAd value roL Load is below zero for Load is under 10g based on the wAd See 3 1 d example pan or pan value supporter is not placed or swapped with another unit s ABT SH e 1011 11 3 3 Troubleshooting at Error Message and Interface Failure 3 3 1 CAL E2 Display Error content Zero point drift during Span calibration This error message is generated when the zero point drifts 20g or more while conducting Span calibration directly after switching the power ON or when the zero point drifts 1g or more while conducting Span calibration a second time after the power is switched ON The u intention of this error message is to prevent obtaining wrong measurement result brought by incorrect span calibration or hardware fa
29. dismount them clean and then reassemble Loosen the two M4 x 55 U15 hexagon socket head bolts and M4 nuts U23 Loosen only Remove the two M3 x 6 screws U20 take off the stopper plate U6 Fig 31 Remove the two M3 x 8 SEMS screws P4 U19 take out the Lever stopper U7 Fig 32 Remove the two M4 x 55 U15 hexagon socket head bolts and M4 nuts U23 take out Lever Assy U1 from the top of the unit Remove the solder from the twisted wire L14 connected to Force Coil Assy L4 Fig 33 Remove the M2 5 x 6 screw L10 PB SPG M2 6 washer L11 take out Force Coil Assy L4 Fig 33 Assembling 1 4 32 Warning UniBloc protection pin J1 must be inserted in the new UniBloc sensor Refer to disassembling Attach the new Force Coil Assy L4 temporarily to Lever Assy U1 by the M2 5 x 6 screw L10 and PB SPG M2 6 washer L11 solder twisted wires L14 to the Force Coil Assy L4 Fig 32 Warning Force Coil Assy s left side Yellow wire right side Blue wire Fig 32 Remove any dust off Force Coil Assy L4 using adhesive tape Check if there is no electric leakage from Force Coil Assy L4 and the wires are not broken Connect a multimeter test leads to the coil frame and relay terminal patterns check there are no sign of leakage or broken wires refer to CHECK 5 With the Force Coil Assy L4 located at the correct height using the Force coil positioning jig J2 insert
30. e training In case a linearity process needs to be conducted it is advisable to send the device back to KERN for the proper adjustment procedure 44 ABT SH e 1011 5 4 Calibration of Built in Weight PCAL 5 4 1 Inputting Conventional Mass Values of the External Calibration Weights to be Used in PCAL 1 Prepare the calibration weight s to be used in calibrating shown in Table 4 Use calibration weights that have information of their conventional mass value 2 In Service Menu select SEt Press the TARE key at the PCAL SEt display The currently set weight value is shown 3 Input the conventional mass values marked values of the weights to be used by using the UNIT key and PRINT key When more than one calibration weight are used the total conventional mass values that make up the designated load should be input For ABTxx 5DM models input the conventional mass value down to five decimals 4 After inputting the numeric value press the TARE key to enter 5 4 2 Performing Calibration of the Built in Weight PCAL Caution Input the conventional mass values of the external weights before calibrating the built in weight PCAL 1 Prepare the weights whose convention mass values have been inputted Leave the weights inside the weighing chamber in advance 2 Confirm the pan is cleared 3 In Service Menu select PCAL Press the TARE key at the PCAL display Then the pre set conventi
31. ect position gt Adjust cam is idling Lock to shaft correctly Main Board J3 connector disconnected gt Connect correctly Cable U26 failed gt Replace Cable 1 26 Main Board J2 connector disconnected gt Connect correctly Cable C43 failed gt Replace Cable C43 Display Board Jl connector disconnected gt Connect correctly Force coil broken has leakage gt Replace Force Coil Assy EEPROM data damaged gt Write characteristics data Main Board failed gt Replace Main Board Assy Unit Assy failed gt Replace Unit Assy ABT SH e 1011 3 3 4 CAL d Display Error content Main causes Remedies ABT SH e 1011 Instability fluctuation occurred when conducting span calibration This error was generated because the balance was shaken or influenced by wind or vibration during span calibration It is possible to skip this error message and use the balance by pressing the ON OFF key when CAL is displaying 1 Level adjustment was attempted during span calibration 2 The weighing chamber glass door was opened during span calibration 3 The workbench on which the balance is set up was shaken during span calibration 4 Large vibration occurred during span calibration 5 Detector Board Assy U4 is failed 6 Dusts are stuck to Force Coil Assy L4 or Magnet Assy U41 7 Dusts are stuck to Unit Assy 2 8 Unit Assy 2 is failed 1 Do not touch the balance
32. ed to 0000 to disable the error message function The blinking digit can be changed Use PRINT key to move the blinking digit Use UNIT key to increase the number of the blinking digit It changes in the order of 0 1 2 3 d 2e 4 When 4A 0000 is made up in the display EEPROM has been rewritten already press ON OFF key to exit from Edit 5 To exit from Service Menu select End in Service Menu Note Post a note saying Error message is off until it is resumed later ABT SH e 1011 41 42 lt How to perform control parameter adjustment gt 1 Enter Service Menu refer to 1 1 and select Pun Adj 2 Wait It automatically complete adjustments taking about two minutes and rewrite the new parameters Never perform this adjustment when not necessary If it is done new linearity adjustment would be needed How to perform linearity adjustment gt See 5 2 for ABTxx 4M series 5 3 for ABTxx 5DM series How to perform PCAL gt See 5 4 ABT SH e 1011 5 2 Linearity Adjustment of ABTxx 4M Series Balances 5 2 1 Inputting the Linearity Adjustment Weight Values 1 Prepare the weights shown in Table 3 2 Remove object s from the pan 3 When Lin Set is displaying in the service menu press the TARE key to display the weight values in the order shown in Table 3 4 Input the true values corrected values of the weights to be used by using the UNIT key and PRINT key 5
33. ee M5 x 12 B16 hexagon socket head bolts from Base Assy B1 and dismount Unit Assy 2 Fig 28 Warning Hold Unit Assy only in the rear part which is fixed to Base Assy Set the new Unit Assy and then lock it by the three M5 x 12 B16 hexagon socket head bolts to the Base Assy Fig 28 Couple and fix Base Assy B1 and Case Assy 8 by reversing procedures 4 to 9 in 4 2 Balance Internal Inspection Assembling Warning Attach Unit Assy 2 by using the lever of Weight loader assy B11 as a left right positioning guide Adjust the linearity calibrate the built in weights and perform span calibration See 5 2 Linearity Adjustment 5 4 Calibration of Built in Weight PCAL 5 5 Span Calibration ABT SH e 1011 4 4 Unit Assy 2 Disassembling Assembling Force Coil Assy L4 Detector Board Assy U4 Replacement Disassembling 1 2 3 5 Dismount Unit Assy 2 from Base Assy 1 by the procedure described in 4 3 5 Replacing the Unit Assembly 2 Disconnect the cable sensor 2 pin U35 from Detector Board assy U4 connect the cable detector 12 pin U26 to Main Board assy C42 Fig 30 Check10 Turn ON the power connect a voltmeter to the check pins CP1 and CPG of Detector Board assy U4 and check the outputs Ifthe output symmetry has drifted from the standard value adjust the height of Detector Board assy U4 Fig 31 Criteria Difference of absolute v
34. eparatur darf nur in 100 iger Ubereinstimmung mit der Bauartzulassung erfolgen Ein Versto gegen diese Vorgabe f hrt zum Erl schen der Bauartzulassung Nach erfolgreicher Reparatur muss eine Nacheichung erfolgen um die Waage wieder im gesetzlich geregelten Bereich verwenden zu k nnen 2 ABT SH e 1011 CONTENTS 0710 24 pes chase E 4 1 1 Entering the Serviee Menu 2 22 22242 RR Reel 4 1 2 Service Menu aa Sandan solider 4 ES MaD EEE Tne er eee EROS 5 2 Performance Check 6 221 et tet ett cet 6 2 2 a 6 23 Linea 7 22 eiue hane bo ede 7 3 Representative Troubles and Error 9 3 1 Representative Troubles and Remedies 4 4 2 1 9 32 Emor Messages entes ca od Center 11 3 3 Troubleshooting at Error Message and Interface Failure 12 3 3 1 GAL EZ Display een endende 12 332 OAM 14 OR EE S dn LC te on a 15 934 Displays oi ne eee teas ese ee 17 3355
35. for 3 seconds The balance model name is displayed to enter the Service Menu mode 1 2 Service Menu contents Pressing the CAL key changes the display as follows Display Content Example Model name 1 220 4E All unit signs are displayed in trAdE on specification g PCS ct and unit signs are displayed trAdE Si specification Unit signs are not displayed in trAdE oF specification 2 w int Move built in weights to initialize position weight lift up 3 w SEt Load or unload the built in weights Y 4 giis Calculate and store the linear coefficient ABT 5D excluded 5 Lin SEt Linear adjustment weight value input ABT 5D excluded Y 6 1 00 1 00 Software version No Control CPU Main board Application CPU Display board 7 Ends Exit Service menu 8 PE Print out EEPROM content non volatile memory 9 CAL iCALor Selected calibration mode in the user menu ECAL Y 10 CAL SEt Input value of external weight for calibration Y 11 Input value of external weight for built in weight calibration 12 Fe Built in weight calibration 13 wAd Load adjustment value see 1 3 wAd Map isplayed by average mode selected in the user menu Displayed b de selected in th 14 tAd Temperature adjustment value Load adjustment value after temperature correction see 1 3 wAd ABT SH e 1011 15 Displayed by average mode selected
36. ight value used when calibrating the built in weights PCAL This error is generated when the difference in the actual external weight value and the set weight value is greater than 2g How to cancel the CAL E3 press ON OFF key Main cause The external calibration weight setting used for calibrating the built in weights is incorrect Remedies Check and correct the set value of the external weight execute built in weight calibration PCAL Flowchart CAL E3 Display CAL E3 Display Check the weight value Weight value Display Under 2g Over 2g Turn off the power take off AC adaptor and take off rear cover Check the input weight value PCAL SEt Over 2g No Yes Re input the weight value Check connection Jl connector on MAIN BOARD ASSY J2 connector on MAIN BOARD ASSY Re supply the power Cancel the first CAL at turn on power Check connection Jl connector on DISPLAY BOARD ASSY Check Cable C43 14 ABT SH e 1011 3 3 3 CAL E4 Display Error content The weight loading point cannot be measured correctly when conducting span calibration This error is generated when the built in calibration weight cannot be correctly loaded unloaded when the measurement result differs from the set weight value used for span calibration due to a hardware failure the set weight value has drifted 2g or more
37. ilure How to cancel the CAL E2 Press ON OFF key Main causes CAL E2 is displayed due to incorrect operation and or hardware failure A Incorrect operation 1 Objects are loaded on the pan during span calibration 1a Level adjustment is performed during span calibration after power on 2 Pan or pan supporter assy is incorrectly set B Hardware failure Remedies 3 Cable U26 is disconnected or broken 4 Force Coil Assy L4 or wiring has broken or leaking 5 Main Board Assy C42 Detector Board Assy U4 or Display Board Assy C40 is failed 6 Mechanical balance of Unit Assy 2 is unstable 7 Stopper plate U6 is contacting Lever pin 51 8 The method of use is incorrect Directly after the power was switched ON a horizontal adjustment was attempted during span calibration 1 Unload the object from Pan execute span calibration 2 Set Pan Pan supporter assy correctly and execute span calibration 3 Connect replace Cable U26 4 Replace solder Force Coil Assy L4 or wiring 5 Replace the defective board s 6 Adjust mechanical balance of Unit Assy 2 With Pan in the load free status adjust the mechanical balance until the wG display Service Menu reading is approx 0 or until the wAd reading Service Menu is displaying the value shown in Table 1 of 5 1 3 Balancing Adjustment 7 Adjust the position of Stopper plate U6 8 Do not operate the balance during span calibrat
38. in the user menu Load adjustment value after temperature linear correction see 1 3 wAd 16 Lad Map Y Displayed by average mode selected in the user menu 17 wG Absolute load value Y Displayed by average mode selected in the user menu 18 bAt Power source voltage AD value 19 p Edit EEPROM data 20 trAdE on lt gt trAdE Si Set to export specification countries except for Japan UN IT key trAdE on All units are usable trAdE Si g 95 PCS and ct are usable Y 21 trAdE oF Set to domestic specification for Japan 22 Pun Adj Control parameter adjustment Attention Never select this menu item Pun Adj If this adjustment performed new linearity adjustment will be necessary 1 3 wAd Map In the wAd 0 Ad LAd displays the highest digit 10 000 000 is indicated by the illumination of each symbol Highest digit 1 Highest digit 6 Highest digit 2 Highest digit 7 Highest digit 3 Highest digit 8 Highest digit 4 Highest digit 9 Highest digit 5 ABT SH e 1011 5 2 Performance Check e Leave the power on in mass display and let stand for 8 hours or more e Conduct the performance check in a location without drafts vibration or sudden changes in room temperature e Place weights inside the balance weighing chamber in advance to conduct performance check without a temperature difference between the weights and weighing chamber e Use
39. ion CAL E2 gt Plug off and on gt Check Stopper plates CAL E2 ABT SH e 1011 Flowchart CAL E2 Display CAL E2 Display Unload object from pan and execute Span Calibration Object loaded on pan No Set the pan pan supporter correctly power turn on again No Refer to 3 3 5 Err01 Display Enter the service menu and weight display oad and unload calibration weight by Service menu Main Board J3 connector disconnected gt Connect correctly Cable U26 failed gt Replace Cable 1 26 Main Board J2 connector disconnected gt Connect correctly Cable C43 failed gt Replace Cable C43 Display Board 1 connector disconnected gt Connect correctly Coil broken has leakage gt Replace Force Coil EEPROM data damaged gt Write characteristics data Main Board failed gt Replace Main Board Assy Unit Assy failed gt Replace Unit Assy Lever limit bar in contact with Lever stopper gt Remove any dusts Adjust height of Detector Board Assy No Execute w int lt No Weight loading system can t stop at original position Check insertion of 12 13 connector on DIAPLAY BOARD ASSY Replace XX cable Weight loading system is broken Replace weight loading system ABT SH e 1011 3 3 2 CAL E3 Display Error content Incorrect external we
40. is large conduct 5 2 5 3 Linearity Adjustment 2 4 Tilt Error 1 Press TARE to set display to 00 gt 2 Insert a 1mm thick plate under the fixed foot at the center rear of the balance When the display has stabilized record the reading gt Error B A 3 If the error is large conduct 5 1 2 Tilt Error Adjustment Table 1 ABT Series Inspection Standards Table Model 120 4M 220 4M 320 4M Weight g 120 220 320 Minimum display mg 0 1 0 1 0 1 Repeatability Standard mg 1 1 1 Weight used g 100 200 300 Four corner error Standard 0 5 1 1 5 mg 50 100 150 used 9 Instrumental error 5509 0 5 50g 0 5 50g 0 5 Standard 50g lt 1 50g lt 1 200 1 mg 200gs 1 5 0 0 0 Weight 120 200 300 used 0 0 0 gl 20 50 50 50 100 100 100 150 200 0 0 0 120 200 300 0 0 0 ABT SH e 1011 7 Model 120 5DM 220 5DM Weight g 120 42 220 82 Minimum display mg 0 1 0 01 0 1 0 01 Repeatability Standard 1 0 3 1 0 3 Weight used 9 100 40 200 80 Four corner error Standard 0 5 0 2 1 0 3 mg Weight used g 50 20 100 50 Instrumental error d50g 0 5 954 0 1 9504 0 5 d20g 0 2 Standard 50g 1 9209 0 2 509 lt 1 20g 0 3 mg 209 lt 0 3 Weight used g 0 0 0 0 120 40 200 80 0 0 0 0 20 5 50 20 50 10 100 40 100 20 150 60 0 0 0 0 120 40 200 80 0 0 0 0
41. n board C42 by reversing above procedures 1 to 4 6 Perform control parameter adjustment of Service Menu See 1 2 Service Menu contents 7 Adjust the linearity calibrate the built in weights and perform span calibration See 5 2 Linearity Adjustment 5 4 Calibration of Built in Weight PCAL 5 5 Span Calibration 28 ABT SH e 1011 4 3 2 Replacing Interface Board Assy C41 1 2 3 4 5 7 Disconnect the AC adapter Remove the 5 anti draft ring 6 supporter assy 4 from inside the weighing chamber Remove the four M3 x 5 Ep 23 Ws 28 fixing the balance rear panel 8 detach the rear panel C omae the two M3 x u ae 28 fixing the balance rear I F panel 15 ig emove the two M3 x 8 SEMS screws C23 inside the balance rear frame Fig 24 Pull out Interface Board C41 Disconnect the cable 4 pin C46 cable 9 pin C44 and cable 8 pin C45 Fig 25 Remove the four connector screws C26 fixing the external key connector ae RS 232C connector D Sub25 pin and remove the I F panel 15 Fig 25 Attach the new interface board C41 by reversing above procedures 1 to 6 4 3 3 Replacing Display Board Assy C40 1 2 3 4 5 7 Separate Base Assy 1 and Case Assy 3 by following the procedures 1 to 5 in 4 2 Balance Internal Inspection Disassembling Remove the four M3 x 5 Truss screws 28 fixing the balance rea
42. nt Adjustment Inspection Requirements Coarse fine Calibration of Linearity Tilt error Calibration ratio built in weights temperature adjustment characteristics Main Board C42 Required Required Required Not required Not required Interface Board C41 Not required Not required Not required Not required Not required Display Board C40 Not required Not required Required 1 Not required Required 1 Weight Loader Assy B11 Not required Required Not required Not required Not required Unit Assy 2 Not required Required Required Not required Required 2 Detector Assy U4 Not required Required Required Not required Not required Force coil assembly L4 Not required Required Required Required Not required 1 When you replace the display board C40 install the EEPROM from the original display board C40 2 When you replace Unit Assy 2 the characteristics data of it must be input to the balance See 5 6 Using Data Edit Mode Edit 4 3 14 Replacing Main Board Assy C42 1 Disconnect the AC adapter Remove the pan 5 anti draft ring 6 assy 4 from inside the weighing chamber 2 Remove the four M3 x 5 Truss screws 28 locking the balance rear panel 3 A detach the rear panel vA Fig 23 isconnect the main boar 2 cable 4 pin C46 cable 10 pin C43 cable detector 12 an n 4 Remove the six M3 x S screws C23 take out the main board C42 Fig 25 5 Attach the new mai
43. oard failed gt Replace Detector Board Assy Board failed gt Replace Main Board Assy Force Coil and Magnet in contact gt Remove any dusts Install Force Coil Assy correctly EEPROM data damaged gt Write characteristics data Unit Assy failed gt Replace Unit Assy 18 ABT SH e 1011 3 3 5 Err01 Display Error content Main causes Remedies Temperature sensor error 1 Detector Board Assy 04 is failed 2 Temp Sensor Assy U47 is failed 3 Detector Board Assy U4 and Temp Sensor Assy U47 is not propery connected 4 Cable U26 is not propery connected with Detector Board Assy U4 and Main Board Assy C42 5 Cable U26 is damaged 6 Main Board Assy Display Board Assy is failed 1 Replace Detector Board Assy U4 2 Replace Temp Sensor Assy U47 3 Solder Temp Sensor Assy U47 cable properly 4 5 Replace Cable U26 6 Replace Main Board Assy C42 and Display Board Assy C40 Flowchart Err01 Display Err01 Display Cut off the power supply Take off AC adaptor off the rear cover Check 2 J3 connector on MAIN BOARD ASSY Turn on the power supply Plug in AC adaptor Err01 display No Yes Cut off the power supply and open the case Check Jl connector on DISPLAY BOARD ASSY Turn on the power supply Plug in AC adaptor Err01
44. on f Zero drift sensitivity The sample or sample container is Shield cover or demagnetize the drift are large magnetically charged or the sample sample is vaporizing or absorbing moisture etc Span calibration has not been Perform span calibration performed correctl Warm is insufficient Warm up sufficiently g Sensitivity is not Level adjustment has not beenjAdjust level correctly done t Re The installation site has been Warm up sufficiently and perform span changed calibration h nsufficient Dust or dirt is stuck to Clean Calibration weight Calibration weight 26 si i W error Replace Unit assembly 2 i Poor measurement Effects of air current vibraiton Change the balance installation site repeatability large movement of persons Remove air current vibraiton display value fluctuation movement of persons Set The stability mark does High stability mode not readily appear The sample or sample container is Cover the sample with metal such as magnetically charged container Pan 5 and Anti draft ring 6 Anti draft ring is causing the symtoms refer to h Corner load error Check drift and refer to f Drift the symtoms damaged Replace Cable U26 twisted bent badly soldered band correctly badly soldered correctly The hole of Stopper plate U6 is Clean the hole of Stopper plate and contacting with Lever pin U51 Lever pin and position and lock Dusts exist between
45. onal mass value is shown 4 Using long nose tweezers load the displayed weight on the pan When the stability mark illuminates press the TARE key 5 Use the long nose tweezers to unload the weight from the pan When the stability mark illuminates press the TARE key 6 The display changes automatically thereafter Calibration is completed when the display returns to mass display Table 4 Span Calibration Weight Values Model 120 4M 220 4M 320 4M 120 5DM ABT 220 5DM Span calibration weight values 100g 200g 300g 40g 80g PCAL 01 5 5 Span Calibration by Built in Weight iCAL 1 Built in weight calibration PCAL has to be performed prior to this calibration 2 Confirm the pan is cleared 3 Select iCAL in Service Menu and press the TARE key at iCAL display 4 The display changes automatically as automatic span calibration is being performed When span calibration is complete the display returns to mass display ABT SH e 1011 45 5 6 Using Data Edit Mode Edit in Service Menu 1 Entering Data Edit Mode When Edit is displaying in the service menu press the TARE key to select Edit mode The Data Edit display shown in the figure below appears The address and a two byte data segment from the address are displayed The left digit of the data segment is displayed blinking 2 Data Editing Procedure Select data address P
46. or Cable C45 disconnected gt Connect correctly Cable C45 failed gt Replace Cable C45 Interface Board failed gt Replace Interface Board Assy Display Board failed gt Replace Display Board Assy 20 ABT SH e 1011 4 Parts Replacement 4 1 General Precaution and Information when Disassembling and Assembling When disconnecting the cables pull the connector straight out Avoid bending the cable connector when disconnecting Fig 1 Warning If the connector is not pulled straight out there is a risk of bending the terminal pins therefore the connector may not be reinserted again Disassembling Assembling 1 2 When disassembling assembling the balance for the protection of the sensitive flexures of UniBloc cell insert UniBloc protection pin J1 into the lever locking hole up to the scribed line Fig 2 Warning Insert UniBloc protection pin J1 as carefully lifting Lever Assy U1 so that the lever part of UniBloc is held horizontally Avoid touching the flexures thin parts of UniBloc Fig 1 3 Apply the standard tightening torque in the table below using a torque driver when tightening unless specified differently Screw Type Tightening Torque kgfx cm M2 or smaller 2 5 M2 5 6 M3 9 M4 18 M4 Hexagon socket head bolt 30 M5 Hexagon socket head bolt 40 Moving the Balance 1 ake out Anti draft ring 6 Pan 5 and Pan supporter assy 4
47. r panel 8 detach the rear panel 8 Fig 23 Disconnect the cable 9 2 cable 8 45 cable 10 43 from Display Board C40 Fig 26 Remove the five M3 x 8 SEMS screws C23 from Case Assy 3 display unit detach the Display Board C40 Fig 26 Remove the six switch spacers pipe shaped from Display Board C40 Move the EEPROM from the original display board C40 to the new display board C40 Mount the new display board by reversing above procedures 2 to 5 Warnin When mounting Display Board place it in the direction of the arrow in Fig 25 Fig 26 ABT SH e 1011 29 4 3 4 Replacing Weight Loader Assy B11 1 2 3 Separate the base assembly B1 and case assembly 3 by following procedures 1 to 8 in 4 2 Balance Internal Inspection Assembling after internal inspection and remove Calibration weight Unscrew the four M4 x 8 SEMS screws B29 take out the weight loader assembly B11 Fig 28 tony the new Weight Loader Assy B11 by reversing above procedures 1 2 Warning Attach the Weight Loader Assy B11 by using Unit Assy 2 cell width as a left right position location guide Fig 27 1 4 3 5 Replacing Unit Assy 2 1 2 3 4 5 Separate Base Assy 1 and Case Assy 3 by following procedures 1 to 8 in 4 2 Balance Internal Inspection Disassembling remove Calibration weight Rest the balance on its rear panel remove the thr
48. ress the CAL key to increase the value of the address segment by two The editable data address range is 00 15F When 15F is displaying in the address segment press the CAL key to return to OO Change data Press the UNIT key to increase the numeric value of the blinking digit by 1 The changeable range is 0 When F is displaying press the UNIT key to return to 0 Move data digit Press the PRINT key to move the blinking digit 1 place to the right When the right end digit in the data segment is displayed blinking press the PRINT key to move the blinking digit to the left end of the data segment Enter data Press the TARE key to enter the data of the displayed address segment The next 2 byte data address and data appear Exit data edit mode or cancel editing Press the ON OFF key to interrupt editing and return to the Edit display 46 ABT SH e 1011 6 Structure and Components Numbers in the figures are referred to in the main texts and Maintenance Parts List 7 C46 Cable power 4 pin 99 ABT SH e 1011 47 Components 1 ABT SH e 1011 48 Components 2 89 age Assy Japeo7 jeddojs 9N zu Assy Josuas Jpn 43487 LSN 49 ABT SH e 1011 Components 3 2 Jepeo Z
49. rkbench surface and read the display ABT SH e 1011 6 If the adjustment standard see 2 Performance Check Table 1 Inspection Standard List is not met insert UniBloc protection pin J1 into the lever locking hole in UniBloc of Unit Assy 2 loosen the balance weight L16 locking the gravity centering counterbalance L15 eccentric shaped counterweight of Lever Assy U1 7 If the reading is shift the gravity centering counterbalance L15 eccentricity down If the reading is shift the gravity centering counterbalance L15 eccentricity up 8 When adjustment is complete lock the gravity centering counterbalance L15 by the balance weight L16 Fig 2 Lever locking u w _ ce a 25 Fig 1 Fig 2 Photos are for parts identification purpose only Warning After completion of the adjustments the adjustment conditions of both Tilt error adjustment and Balancing adjustment must be met at the same time ABT SH e 1011 ar 5 1 3 Balancing Adjustment 1 Separate Base Assy B1 and Case Assy 3 by following procedures 1 to 8 in 4 2 Balance Internal Inspection Disassembling and remove Calibration weight 26 2 Connect Cable detector 12 pin U26 to Main Board Assy C42 3 Remove UniBloc protection pin J1 from the lever locking hole in UniBloc of Unit Assy 25 Set Pan supporter assy 4 and 5 supporter shaft 53
50. screws yn the position where the voltmeter readin changes en ihe up and down positions of Lever Assy Fig 1 When pressing Lever Assy down it must show value in voltage Detector Board Assy output adjustment standard The difference of the absolute values of and sides must be within 0 5V Acceptable voltage 0 5V 3 0V Warning Connect the test leads as shown in Fig 40 First press down balance weight shaft and adjust until the output reading shows 7 Disconnect the voltmeter test leads from Detector Board Assy U4 8 Disconnect the balance AC adapter disconnect Cable detector 12 pin U26 from Detector Board Assy U4 Connect the cable sensor 2 pin U35 5 1 2 Tilt Error Adjustment 36 1 Separate Base Assy B1 and Case Assy 3 by following procedures 1 to 8 in 4 2 Balance Internal Inspection Disassembling and remove Calibration weight 2 Connect Cable detector 12 pin U26 to Main Board Assy C42 3 Remove UniBloc protection pin J1 from the lever locking hole in UniBloc of Unit Assy 2 Set Pan 5 Pan Supporter Assy 4 on the pan supporter shaft 53 of Unit Assy 2 4 Adjust the two Level Screw B2 until the bubble of Level indicator comes to the center of the red circle Connect the AC adapter to the balance 5 Insert a 1mm thick plate under the foot at the center rear of the balance Steady the balance with the right Level Screw raised off the wo
51. them Stopper plate correctly 10 ABT SH e 1011 Lever stopper U7 and or Clean the Lever stopper and Lever Detector Board assy U4 are bar and adjust the height of correctly positioned Lever stopper Detector Board assy 04 U7 is contacting Lever limit bar U52 Dusts exist between them Detector Board Assy U4 is failed Replace Detector Board Ass Main Board Assy C42 is failed Replace Main Board Ass Force Coil assy L4 wire break Replace Force Coil assy earth leak L4 Force Coil Assy L4 and Magnet Assy 041 are contacting directlylAssy correctly or with dusts Damaged EEPROM data Input the data with Adjustment S W Unit Assy 2 is damaged If 3 2 Error Messages Remove dusts and position Force Coil the error is under Replace Unit assembly XXXX Error Message Condition to display message Remedy message display CAL E2 Large drift of zero point From the time of last span calibration Refer to 3 3 1 is detected during span the zero point is recognized to be calibration drifted 1 first span calibration after power on over 20g 2 usual span calibration over 1g based on the wAd value CAL E3 In PCAL the inputted nputted value and actual calibration Refer to 3 3 2 value of calibration weight differ over 2g based on the Weight does meet wAd value the actually placed calibration weight CAL E4 In span calibration the nputte
52. xis is not completely independent to the other Therefore adjust B F direction before L R direction If a positive value shift is observed at B on the pan grind at 2 first If a positive value shift is observed at F on the pan grind at 5 first After bringing the positive value shift at B or F within standard proceed to adjustment in L R direction If a positive value shift is observed at L on the pan grind at 3 and 6 If a positive value shift is observed at R on the pan grind at 1 and 4 Fig 8 40 ABT SH e 1011 Table First adjust so that Step 1 standard is met then proceed to Step 2 with reduced weight value Capacity Calibration Adjustment standard Calibration Adjustment Standard weight Step 1 Difference weight value Step 2 Difference value for between L and R for between L and R adjustment between and must adjustment between B and F must Step 1 be within Step 2 be within 320g 200g 0 5mg 150g 0 3mg 220g 200g 0 5mg 100g 0 3mg including ABT 220 5DM 120g 200g 0 5mg 50g 0 3mg including ABT 120 5DM Warning After Corner load adjustment When corner load adjustment has been performed mechanical balance of Unit Assy changes Check Tilt error and mechanical balancing according to 5 1 2 and 5 1 3 after corner load adjustment and perform necessary adjustments Linearity adjustment is also necessary

KERN ABT - FineMech

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