SERVICE MANUAL for SCOPE METER
Contents
1. r2r ER RE Re Ke RE RR Re RE RE RR nn 2 7 2 1 INT OQUCHON so ee ee De int 2 7 2 2 Warranty Repairs and Shipping Information 2 7 2 8 Stalle Sate Handling nenn 2 7 2 4 Cesano 2 7 2 0 Disassembly Procedures ii 2 8 2 5 1 Remove the Meter Case ee ee ees 2 10 2 5 2 Remove Rubber button and Battery Pack 2 10 2 0 3 Separate SUB and Main PCB Assembly 2 11 2 54 Remove LCD Cover 2 11 2 6 Assembly Procedures asus 2 12 2 6 1 Layout for LCD Assembly see ee 2 12 2 6 2 Layout for Scope Assembly 2 13 Performance Testing alia 3 1 3 leide ie iere WEE 3 1 3 2 Required Test Equipment ee 3 1 3 3 Performance rlesis edilizia 3 1 3 3 1 Scope center Tests ee ee ee 3 1 392 DEM TESIS EE SES N EE Ge coe ees 3 2 393 EE 3 2 SR Dt ee OR EE 3 3 33 9 Frequency Tesis EE EE aa 3 3 3 3 6 AC DC Coupling Tests iese RE 3 3 5 9 ExierialTesie Di ale eigene 3 4 Ab CHB all ois kee De ne ee i 3 4 3 9 9 DUV Tessile leda 3 4 33 10 Pulse Width Tessa a 3 4 3 3 11 RS232 Input and leste iese ee se see ee ee ee 3 5 Calibration ila a ee 4 6 4 1 INIFGAUEUOR ee 4 6 4 2 Preparation before Entering Calibration Mode 4 6 421 Vo tage Eege eege 4 6 422 SCWNOTONMRSZ32C ana en 4 6 4 3 Entering Calibration Mode nennen 4 7 4 4 Calibration Scope Center ie ee Ee ee ee 4 72. 6 1 1 6 1 2 6 1 3 6 1 4 6 1 5 6 1 6 6 2 6 2 1 6 2 2 6 2 3 6 2 4 6 2 5 6 2 6 Schematic Diagrams 52401 amp S2800 Main PCB Assembly SUB PCB Assembly Analog Digital Channel A Channel B 2405 amp S2505 Main PCB Assembly SUB PCB Assembly Analog Digital Channel A Channel B 6 1 f Troubleshooting 7 1 Introduction This chapter describes trobleshooting procedures than can be used to isolate problems with the meter Warning Opening the case may expose hazardous voltages Always disconnect the power cord and measuring inputs before opening the case And remember that repairs or servicing should be performed only by qualified personnel Caution Handle the PCB Assembly by its edges or while wearing gloves avoid contaminating the PCB Assembly with oil from tour fingers A contaminated PCB Assembly may not cause immediate instrument failure in controlled environments Failures typically show up when contaminated units are operated in humid areas 1 2 Troubleshooting guide If you experience trouble with your instrument try these corrective actions before concluding that the instrument needs repair 1 Make sure you are using fresh NI MH battery pack or fully charged rechargeable battery pack If you are using the AC DC power adapter make sure the adapter is plugged into an appropriate live power source 2 If the buttons do not respond to your control or the contrast is se
3. F4 and F4 3 Press DIV button and change V DIV to AUTO mode by pressing right or left arrow button 4 Press F3 H DIV button and change H DIV to AUTO mode by pressing right or left arrow button 5 Apply AC 700V 60Hz and verify that measurement value is in guaranteed specification 6 Apply AC 100V 60Hz and verify that measurement value is in guaranteed specification 7 Apply AC 10V 60Hz and verify that measurement value is in guaranteed specification 8 Apply AC 1V 60Hz and verify that measurement value is in guaranteed specification 9 Apply AC 100V 20kHz and verify that measurement value is in guaranteed specification 10 Apply AC 10V 20kHz and verify that measurement value is in guaranteed specification 11 Apply AC 1V 20kHz and verify that measurement value is in guaranteed specification 12 Apply AC 100mV 20kHz 13 Change V DIV to100V DIV 3 2 14 Apply 100V 60Hz and verify that the waveform and measurement value are displayed correctly 15 Verify 10V 1V and 100mV Only S2405 S2505 as described above 3 3 4 OHM Tests 1 Press FUNC button then press F1 Scope button 2 Select OHM of MEASUREMENT A then press F3 F4 and F4 3 Press F2 RGE button and change V DIV to AUTO by pressing right or left arrow button 4 Press F3 H DIV button and change H DIV to AUTO by pressing right or left arrow button 5 Apply 1 KO to equipment and verify that the measurement value and waveform position are in sp
4. 1Pcs Se HEL 1Pcs 6 SUB PCB Assembly 1 Set 7 Mam PCB Assembly 1 Set 8 Battery Pack 1Pcs 9 Bottom Case 1Pcs 10 Stand Top amp Bottom 1Pcs S1 Screw for Top and Bottom case 3Pcs S2 Screw for Sub and Main PCB 4Pcs and 4Pcs S3 Screw for LCD Cover 5Pcs S4 Screw for Stand 1Pcs 2 9 2 5 1 Remove the Meter Case area Use the following procedure B ito remove the meter case Power OFF i Makesurethe meter is PQ turned off and unplugged en _ from the power Adaptor gt 2 Remove Screw gt x Remove the three screw j e i from the bottom of the case 3 Pcs e Remove the PCB Ass y Now remove the PCB Assembly by releasing the four snap retainers securing it to the case 2 5 2 Remove Rubber button and Battery Pack Rotate the PCB Assembly 180 degrees O Remove Rubber Button Au A Remove Battery Pack ee EE Remove the battery plug ee from the connector Remove Screw a Remove the four screw i ed from the Sub PCB NN assembly 4 Pcs e e Separate PCB LEED _T _ The SUB PCB Assembly Sie E x can now be lifted away A from the Main PCB H 7 _ Assembly EE EE Ee Ee ee ee ee ee ee Ee ee Ee Ee EN 1 Remove screw 4 _ Remove the five screw for i i _ LCD cover 5 Pcs LE 2 Rotate the Sub PCB an i Rotate the SUB PCB Assembly 180 degrees Remove LCD Cover So eee The LCD Cover c
5. 4 5 Calibration zero point of DMM function 4 8 4 5 1 DC Volts Calibration 4 8 4 5 2 AC MolteCGalbraton nennen 4 8 4 5 3 Ohms Calibration ek ee EE ee Ee ee ee 4 9 4 5 4 Frequency Calibration i 4 9 4 6 Exiting Calibration Mode ee ee ee 4 9 List of Replaceable PartsS ii 5 1 5 1 IMITOQUCHON en 5 1 5 2 How to Obtain Parts ees sesse ee ee ee Ee ee ee ee ee ee ee 5 1 5 3 How to Contact Seintek ee ee ee ee RE ee ee ee 5 2 5 4 Newer Instruments AAA 5 2 Didi Piena 5 2 Schematic Diagrams iii 6 1 6 S2401 amp S2 0 0 bll lalla 6 1 6 1 1 Mali PGB Assembly Ee EES eil 6 1 6 1 2 SUB PEBAssembIy 2 2 2a 6 1 eka ANALOG i RE EN AR Ee ee a DE ee 6 1 Ola Re CT EE 6 1 1205 ChannelA sli LALA 6 1 OLG ChannelBi a La al 6 1 62 EE tee 6 1 6 2 1 Main PCB Assembly ee Re EE 6 1 6 2 2 SUB PCB Assembly 6 1 SE On E ie EE 6 1 0274 Doblo oh 6 1 6 2 5 EEN 6 1 626 Channel Billo aa 6 1 Troubleshootind sizione 7 1 1 1 HroduUCtION eisa E O 7 1 7 2 Troubleshooting goude 7 1 7 3 Starting with a Dead meter 7 2 TA Can not install the software 1 2 7 4 1 Check the HW and S W requirement 1 2 7 4 2 Error Could not copy file 7 2 7 9 The back light is not working 1 3 7
6. Protection 5 KO 0 001 kQ 50 kQ 0 01 KO 0 5 5 600V DC or 500 kQ 0 1 KQ AC rms 5 MO 0 001 MQ 0 75 10 Continuity Buzzer Test Voltage Threshold Over Load Protection 1 7V 100 digits 600V DC or AC rms 1 5 Frequency Range Resolution Accuracy Overload protection 100 Hz 0 01 Hz 1 KHz 0 0001 kHz 10 KHz 0 001kHz 600V DC 100 kHz 0 01kHz a or AC rms 1 MHz 0 0001MHz 10 MHZ 2405 0 001MHz The guaranteed range is below 5 MHz RPM 2401 S2405 82505 Range Resolution Accuracy 240 60 000 1 RPM 0 05 5 Pulse Width S2401 S2405 2505 Range 2uS 500mS Pulse Width gt 2uS Duty S2401 S2405 S2505 Range 25 75 Only S2800 Function Range Resolution Accuracy RPM 120 12 000 1RPM 2RPM Duty 1 98 Dwell 3 6 352 8 Pulse Width 2 US 450 mS Pulse Width gt 2 uS Frequency 2Hz 1MHz 1 6 2 General Maintenance 2 1 Introduction This provides handling cleaning battery replacement disassembly and assembly instructions 2 2 Warranty Repairs and Shipping Information If your meter is still under warranty see the warranty information at the front of this manual for instructions on returning the unit 2 3 Static Safe Handling Observe the following rules for handling static sensitive devices 1 Handle all static sensitive components at a
7. Super Twist 132 x 128 pixels 13 Equipment Dimensions 90 mm width x 195 mm depth x 40 mm height 14 Equipment Weight About 460g 1 3 1 3 2 Technical Specification 1 Oscilloscope Function 1 Horizontal Sample Rate Record Length Sample Division 25 MS s Dual CH mode 50 MS s Single CH mode 512 single shot 256 in all modes 25 Modes Single shot Roll Normal Accuracy 0 01 Sweep Rate 1uS to 5S in 1 2 5 sequence 2 Vertical Bandwidth 1MHz Resolution 8 Bit Channels Dual Coupling AC DC Input impedance 1 MQ Accuracy 3 Max Input Volts DC or AC 600Vrms 401 2800 0 5V to 500V in 1 2 5 sequence Volt Division 2405 2505 50mV to 500V in 1 2 5 sequence 3 Triggering Type CHA CHB External Coupling AC DC Slope Rising T or Falling 4 edge Internal Trigger Sensitivity 2 20 Division 4 Waveform Memory 2800 8 Shots Wavef M Sean Others 16 Shots REF Wave From Memory 45 Shots Only S2800 1 4 2 Digital MultiMeter Function DC V Range Resolution Accuracy Impedance V 001V GT wann 500V n IV el 2 1 MO 0 5 5 1000V 1V ACV Accuracy R Resolut d N 50 450Hz 0 45k 5kHz 5k 20kHz 3V 0 001V 30V 0 01V 2 5 5 0 75 5 2 5 1MO 300V 0 1V i l a ainoaan annak a EEN EER RR kk EA 750V 1V N A OHM Range Resolution Accuracy Over Load
8. even if you change offset value Press TRIG button then press F3 Tmode button Select CHB in Trigger SOURCE then press F3 F4 and F4 Move the input signal from CHA to CHB 0 Verify AC DC coupling as described above o DR 3 3 7 External Tests Press FUNC button then press F1 Scope button Select Hz of MEASUREMENT A then press F3 F4 and F4 Press TRIG button then press F3 Tmode button Select EXT in Trigger SOURCE then press F3 F4 and F4 Apply 1MHz S2401 S2800 or 5MHz S2405 S2505 to EXT TRIG and COM connector and verify that the frequency measurement value is correct NT 3 3 8 CHB Tests 1 Press TRIG button then press F3 Tmode button 2 Select CHB in Trigger SOURCE then press F3 F4 and F4 3 Apply AC 700V 5kHz to the equipment and verify that the waveform is displayed correctly 3 3 9 Duty Tests Press FUNC button then press F1 Scope button Select DTY of Measurements A then press F3 F4 and F4 Apply DUTY 50 10ms 5V to the equipment by using 9100 Verify that the equipment is reading 50 correctly u K 3 10 Pulse Width Tests Press FUNC button then press F1 Scope button Select P W of Measurements A then press F3 F4 and F4 Apply P W 1ms 10mS 5V to the equipment by using 9100 Verify that the equipment is reading 1ms correctly PET 3 4 3 3 11 RS232 Input and Tests 1 Verify that SETUP MENU LOGO SERIAL NO etc is correct 2 Verify the communication b
9. static safe work area Use grounded static control table mats on all repair benches and always wear a grounded wrist strap Handle boards by their nonconductive edges only Store plastic vinyl and Styrofoam objects outside the work area 2 Store and transport all static sensitive components and assemblies in static shielding bags or containers Static shielding bags and containers protect components and assemblies from direct static discharge and external static fields Store components in their original packages until they are ready for use 2 4 Cleaning Warning To avoid electrical shock or damage to the meter never allow water inside the case To avoid damaging the meter s housing never apply solvents to the meter If the meter requires cleaning wipe it down with a cloth that is lightly dampened with water or a mild detergent Do not use aromatic hydrocarbons chlorinated solvents or methanol based fluids when wiping the meter 2 2 9 Disassembly Procedures The following paragraphs describe disassembly of the Meter in seguence from the fully assembled meter to the Sub assembly Start and end your disassembly at the appropriate heading levels wi BE al sa es A d S1 se PC Cover Kach Disassembly 2 8 No Description Q ty 1 Top Case 1Pcs 2 Rubber Button 1Pcs 3 ILCD Cover 1Pcs 4 LCD
10. 5 1 Desoldering from EL terminal 1 3 7 5 2 Remove screw for LCD cover 1 3 7 5 3 Remove CD COVER RE EE hen ica 7 4 7 5 4 Detail for EL terminal ee ee Ren 7 4 7 5 5 Insert electric wire between PCB and EL 7 4 7 5 6 Layout for LCD Assembly ees ee 7 5 Tods EC HERE RE 7 5 7 5 8 Install screw for LCD cover 7 6 7 5 9 Soldering of EL terminal no 7 6 19 10 REASSEMDIY ss ara 1 6 1 Introduction and Specifications 1 1 Main Features This Programmable Universal Scope Meter offers enhanced features that similar type test instruments on the market today don t have All the functions are designed to be very convenient to use You can quickly get used to working with this METER and the great many functions integrated inside This instrument features 1 RS 232C interface for transferring measurement data and waveform Dual Channel and Auto Calibration Automatic setting for horizontal and vertical division DC to 5MHz 2405 2505 1MHz 2401 2800 oscilloscope band width Built in auto ranging True RMS digital MultiMeter Auto ranging Data hold and run mode Back light display and Low battery indication Display Type Super Twist 132 x 128 pixels 0 Designed to comply with safety standard for UL3111 CSA C22 2 No 1010 1 PN SOLITA 1 1 1 2 The following items are includ
11. RATION Seat ai pe Jenner RE Lusi ZERO Calibration HI erre errr eer ee me Serre TITIICELITO 3 Sree 3 Rical Reading Calibration ii ere EE Tivi E Rete nea w i Pos ir SPP F EE dee n PFI Pe i Tri g g e r L ev el Defi EL Eros ms 2 Up and down arrow buttons adjust FUN Right and left buttons adjust V RANGE 3 Connect the tool for a short circuit test 4 Move to 0 2V range of DCV 5 Wait until figures stabilize 6 Adjust zero point of equipment by pressing F2 Z cal button 7 Adjust zero point of 2V 20V 200V range as described above 4 5 1 DC Volts Calibration 1 Change to function DCV by pressing up or down arrow button 2 Change to Range 200V by pressing left or right arrow button 3 Apply DC 200V to equipment Allow for settling then press F3 R cal button This step will take approximately 5 seconds 4 Apply 20V 2V and 0 2V S2405 S2505 as described above 4 5 2 AC Volts Calibration 4 8 _ Change to function ACV by pressing up or down arrow button Change to Range 200V by pressing left or right arrow button Apply AC 199 5V 60Hz to equipment Allow for settling then press F3 R cal button Apply 20V 2V and 0 2V S2405 S2505 60Hz as described above 4 5 3 Ohms Calibration oa m Short the test lead ends together Record the reading system resistance shown on the meter Change to function OHM by pressing up or down arrow button Ch
12. SERVICE MANUAL for SCOPE METER 52480_E040404_R01 FEE EER GE AU D TRIG gt B FUNG Pad GEFA FIH Interface True RIME E A EXT TRIG CHB COM CHA Le Ce Le J Programmable Handy Scope Series LIMITED WARRANTY amp LIMITATION OF LIABILITY Each Seintek product is warranted to be free from defects in material and workmanship under normal use and service The warranty period is one year and begins on the date of shipment Parts product repairs and services are warranted for 90 days This warranty extends only to the original buyer or end user customer of a Seintek authorized reseller and does not apply disposable batteries or to any product which in Seintek s opinion has been misused altered neglected or damaged by accident or abnormal conditions of operation or handling Seintek warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non defective media Seintek does not warrant that software will be error free or operate without interruption Contents Introduction and Specifications uuuusuunusnannnnnnnnnnnennnn 1 1 1 1 UE RN Gr 1 1 1 2 Unpacking the Test Tool KI ee ee RR Ee 1 2 1 9 Specilicalio ihre 1 3 1 3 1 General Specifications 00nnonneennoennennennnernnn 1 3 1 3 2 Technical Specification 1 4 General Maintenance
13. an now N i be lifted away from the E SUB PCB Assembly 2 11 2 6 Assembly Procedures Generally assembly procedures follow a reverse sequence of disassembly procedures As some differences do apply assembly is described separately in the following paragraphs Begin assembly at the appropriate level as defined by the heading References are made to items in below Figure for assembly details of standard meter parts 2 6 1 Layout for LCD Assembly RE EE ee liti ee Oe ee ee Ee Ee a LCD Cover PC Cover N 2 LCD Sy z Le DIE LCD lt gt N We recommend that do not remove LCD from SUB PCB 2 6 2 Layout for Scope Assembly N pa 10 f x bes 1 eg AY Ss Say gt lt s1 Ps Assembly 2 13 3 Performance Testing 3 1 Introduction This chapter of the Service Manual provides performance tests that can be used at any time to verify the meter operation within published specifications A complete calibration procedure is also included The performance test and if necessary the calibration procedure can be performed periodically and after service or repair 3 2 Required Test Equipment The following equipment or a suitable equivalent is required for performance testing and calibration Description Examples Multifunction Calibrator Refer to 4808 specification 4808 Multifunction Calibrator Refer to 9100 s
14. ange to Range 2kQ by pressing left or right arrow button Apply 2kQ to equipment Allow for settling then press F3 R cal button Apply 20kQ 200kQ and 2MO as described above 4 5 4 Frequency Calibration _ Change to function Hz by pressing up or down arrow button Apply AC 0 2V 1MHz to equipment Allow for settling then press F3 R cal button If the measurement value is not correct adjust by up or down arrow button after press F4 Tlvl 4 6 Exiting Calibration Mode Calibration mode can be exited at any time by pressing the I O button Power off 4 9 5 List of Replaceable Parts 5 1 Introduction This chapter contains an illustrated list of replaceable parts for the Seintek Handy Scope meter Parts are listed by assembly alphabetized by reference designator Each assembly is accompanied by an illustration showing the location of each part and its reference designator The parts lists give the following information 1 Reference designator 2 An indication if the part is subject to damage by static discharge 3 Description 4 Seintek stock number 5 Total quantity 6 Any special notes i e factory selected part Caution A symbol indicates a device that may be damaged by static discharge 5 2 How to Obtain Parts Electrical components may be ordered directly from the manufacturer by using the manufacturers part number or from the Seintek and its authorized representatives by using the pa
15. consumption drops from 400mA to 30mA 8 Check the adaptor indicator on the screen disappears when you remove the adaptor 4 2 2 Setting for RS232C 1 Run RS232 setup program 2 Setup Baud Rate Com port 3 Enter the setup logo and number into the equipment by running the program 4 6 4 3 Entering Calibration Mode vn El 1 With retaining Gi FUNC 0 5 601U TEER FAT buttons pressed press CALIBRATION 1 button I ee een Sen ee B E i Examine the screen status H per A EE i and buttons function 4 4 Calibration Scope Center 1 Connect the tool for a short circuit test to CHA CHB and COM connector of the equipment 2 Adjust Scope center for each V DIV You can change V DIV by pressing up down arrow buttons of the equipment V DIV of CHA CHB will be changed simultaneously when you adjust them 3 Move to 0 5V DIV 4 Scope center would be adjusted by pressing F3 button Z cal If the equipment still do not display scope center correctly press F3 Z cal continuously until the equipment displays the correct scope center 5 Adjust the scope center of 50mV 0 1V 0 2V 0 5V 1V 2V 5V 10V 20V 50V 100V 200V 500V as described above 50mV 0 1V 0 2V is only S2405 S2505 4 7 4 5 Calibration zero point of DMM function 1 Move to DMM function adjustment mode by pressing F4 DMM button 1 FIR 2 EO Function A Range US 8 060 U TEGIA f AT CALIB
16. ecification D Apply 10 kQ to equipment and verify that the measurement value and waveform position are in specification 7 Apply 100 KO to equipment and verify that the measurement value and waveform position are in specification 8 Apply 1 MQ to equipment and verify that the measurement value and waveform position are in specification 9 Apply 4 MO to equipment and verify that the measurement value and waveform position are in specification 3 3 5 Frequency Tests 1 Press FUNC button then press F1 Scope button 2 Select Hz of Measurements A then press F3 F4 and F4 3 Apply AC 0 2Vrms 1MHz 52401 S2800 or 0 2Vrms 5MHz 52405 S2505 to equipment and verify that the measurement value is correct 4 Apply AC 2V 100kHz to equipment and verify that the measurement value is correct 3 3 6 AC DC Coupling Tests 1 Press FUNC button then press F1 Scope button 2 Select AC of INPUT A B in SCOPE SETUP then press F3 F4 and F4 3 Setup the Function Generator G5100 frequency to 10kHz 4 Setup the Function Generator G5100 offset to 5V 5 Apply Function Generator output G5100 to CHA and COM connector of equipment and verify that AC Coupling operates 3 3 properly Note AG Coupling is a mode that blocks the DC component of a signal but passes the dynamic AC component of the signal Useful for observing an AC signal that is normally riding on a DC signal 6 Horizontal zero position will not be changed
17. ed in your test tool Kit Note Unpacking the Test Tool Kit When new the rechargeable Ni MH battery pack is not fully charged m STANDARD Description Scope Meter Ni MH Battery Pack installed Rechargeable Adaptor Test Leads amp Alligator Clips 2 Users Manual Rubber Holster Carrying case RS 232 S W amp Cable m OPTION Description Rubber Holster Carrying case RS 232 S W amp Cable Inductive Pickup Capacitance Pickup Secondary Adaptor Note S2401 S2401 S2405 S2405 S2505 S2505 S2800 S2800 The accessories may be changed to improve the product quality without notifying the customers 1 2 1 3 Specification 1 3 1 General Specifications 1 Operational Temperature 0 C to 50 C 32 F to 122 F at a relative humidity 75 or less 2 Storage Temperature 20 C to 60 C with a relative humidity of 75 less 3 Temperature Coefficient 0 1 x Specified Accuracy per C for temperature lt 18 C to gt 28 C 4 Max Voltage between any Input and Ground DC or AC 600Vrms 5 Basic DC Accuracy 0 3 6 Band width 5MHz 2405 2505 1MHz 2401 2800 7 Meter AC Band width 20kHz 8 Power Supply Ni MH Battery 4 8V 1 2V x 4 cell 9 Battery Life Time 4 Hours without Backlight on 3 Hours with Backlight on 10 Battery Change Time About 3 Hours 11 Battery Change Class 2 transformer Input 120V AC 60Hz or 240V AC 60Hz Output 9V DC 1A 12 Display Type
18. etween equipment and computer by using RS232 program 3 5 4 Calibration 4 1 Introduction The adjustment procedure consists of several steps Each step requires an external voltage source for new calibration constants Before performing the adjustment procedure you must warm up the instrument for at least ten minutes in an ambient temperature between 18 C and 28 C Adjustments performed prior to warm up or outside this temperature range may result in poor performance If all steps in the procedure are completed successfully the new calibration constants take affect The equipment setups are required to complete the adjustment procedure 4 2 Preparation before Entering Calibration Mode 4 2 1 Voltage test 1 Apply 4 5V to the equipment by using power supply P6100 2 Check the current consumption of P6100 is approximately 400 mA 3 Lower the voltage to 4 2V to check low battery indicator on the top right side of the screen and then the equipment is turned off 4 Apply power source by using battery and connect the adaptor of the tool to test current and voltage 5 Check the current consumption is 400 mA 6 Check the voltage sensor of the charging circuit is operating by shorting 5V power source of D17 and left node of R82 When you short them current consumption drops from 400mA to 30mA 7 Check the temperature sensor of the charging circuit is operating by shorting both node of R82 When you short them current
19. pecification 9100 Arbitrary function generator Roe HE od HC930 specification Function generator Refer to G5100 specification G5100 Power supply P6100 Resistance calibrator oo EN NE N N Tool for a short circuit test To test current and voltage sS Personal Computer 3 3 Performance Tests The following performance tests are provided to ensure that the meter is in proper operating condition 3 3 1 Scope center Tests 1 Turn off the equipment and turn on the equipment 2 Move to DCV Press FUNC F1 and then select DCV then press F3 F4 F4 3 Press DIV button then press the F1 gt F2 gt F3 and gt button to change of A Div B Div and H Div to AUTO mode 3 1 4 Verify scope center as changing V DIV 0 5mV 500V of CHA B by pressing up and down arrow buttons 3 3 2 DCV Tests 1 Press DIV button and change V DIV to AUTO by pressing left or right arrow button 2 Press F3 H DIV button and change H DIV to AUTO by pressing left or right arrow button 3 Apply DC 700V to equipment and verify that measurement value is in guaranteed specification 4 Change of V DIV range to 100V by pressing up and down arrow button 5 Apply DC 100V to equipment and verify that the waveform displays DC 100V correctly 6 Verify 10V 1V and 100mV Only S2405 S2505 as described above 3 3 3 ACV Tests 1 Press FUNC button then press F1 Scope button 2 Select ACV of MEASUREMENTS A then press F3
20. r WINNT setup1 exe please deletion of WINDOWS or WINNT setup1 exe file and reinstall 1 2 1 9 The back light is not working When the back light is not working although the symbol is on the screen To remove the Meter Case refer to procedures chapter 2 5 1 to 2 5 3 11111 Trr_r_ _ T___P_t_tT__ _ o eo o o o o nm000 m nt_tEnz n 1k1lnmnc tiiliti LELLELELEILELELELTELELLLLELPLELLELPLLFLELELLELELELOELELELLELELELTELELSTLELELETDELELELLELELELLELELELTELELELLELELELDELELELLELELETLELEN A Desoldering J ea i Desoldering EL terminal Ce _ ed i 2 points Rotate the PCB Assembly i 180 degrees 7 5 2 Remove screw for LCD cover 1 Remove Screw Remove the five screw for r LCD cover 5 Pes l L Rotate the PCB Assembly sa 180 degrees 7 3 Remove LCD Cover The LCD Cover can now be lifted away from the SUB PCB Assembly 7 5 4 Detail for EL terminal 1 EL terminal i After desoldering EL terminal VIEW A 7 5 5 Insert electric wire between PCB and EL Insert electric wire gt 9 _ Insert electric wire About FE 1 6 x 12mm between oe PCB and EL Electric Wire After insertion 7 4 1 9 6 ayout for LED Assembly N ee SE N lo Layout for LCD ae LCD Cover e LCD Cover LCD EL lt A bo Electric Wi
21. re to be se inserted and PCB 21 6 x 12mm wire 7 5 7 Install LCD cover a Caution Ba ke Clean the LCD and Cover SL gt with deionized air and if es oe necessary isopropyl ZA alcohol Then gently snap the Cover into the SUB PCB tabs Air Gun di Install LCD cover 1 5 7 5 8 Install screw for LCD cover p Rotate the Sub PCB Rotate the SUB PCB Assembly 180 degrees RE IG Install Screw Z Install the five screw for S LCD cover Rotate the Sub PCB Y pra _ Rotate the SUB PCB x Pr AN em Assembly 180 degrees EN Pr e Soldering an IN Fir _ Soldering EL terminal 2 mee O points 7 5 10 Reassembly Generally reassembly reverses the disassembly procedure 7 6 MEMO MEMO 1332 5 Duggi dong lIsan gu Koyang city Head Office Korea And TEL 82 31 914 2381 Factory FAX 82 31 914 2385 Customer Services TEL 82 31 914 2384 Homepage http www seintek com E Mail seintek seintek com SENTE Sein Electronics Co Ltd
22. rt number under the heading SEINTEK STOCK NO Parts price information is available from the Seintek or its representatives Prices are also available in a Seintek Replacement Parts Catalog which is available on request In the event that the part ordered has been replaced by a new or improved part the replacement will be accompanied by an explanatory note and installation instructions if necessary To ensure prompt delivery of the correct part include the following information when you place an order 1 Instrument model and serial number 2 Part number and revision level of the pca containing the part 3 Reference designator 4 Fluke stock number 5 1 5 Description as given under the DESCRIPTION heading 6 Quantity 5 3 How to Contact Seintek To contact Seintek visit Seintek s web site at www seintek com or call one of the following telephone numbers Korea 82 31 914 2381 5 4 Newer Instruments Changes and improvements made to the instrument are identified by incrementing the revision letter marked on the affected PCB These changes are documented on a manual supplement which when applicable is included with the manual 5 5 Parts The following pages give detailed listings of Seintek Handy Scope meter Note This instrument may contain a NI MH battery Do not mix with the solid waste stream Spent batteries should be disposed of by a gualified recycler or hazardous materials handler BEE 5 2 6 1
23. t such that the display is unreadable remove the power source while the instrument is on Wait 15 minutes and then restore power and try operations 3 If you still experience difficulty check your connections and reread the usage instructions 4 If meter is frozen while you control the trigger level 7 1 If you set the trigger level to normal NOR mode trigger level must be the same level of waveform Meter does not trigger if trigger level set above or below waveform If you set the trigger level to Auto AT mode you do not need to control the trigger level In rare cases your instrument may require servicing There are no user serviceable parts inside the instrument For service return the instrument to your customer service center 1 3 Starting with a Dead meter When you turn the Meter on the display normally shows input connections necessary for the function selected then proceeds to a display mode appropriate for that function A display that does not come on at all can be caused by a problem in one or moreof several areas These areas are discussed in the following paragraphs 7 4 Can not install the software 7 4 1 Check the H W and S W requirement 1 IBM PC XT AT or Compatible Computer 2 Microsoft Windows 3 1 95 98 2000 XP or WINNT 3 Serial Port for Connection with Instrument 7 4 2 Error Could not copy file If message display Error Could not copy file SETUP1 EX_ gt C WINDOWS o
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