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Section 5: Maintenance

Unlock the screen data cable, pull it out carefully.

Figure 24: Disconnect the screen data cable

The cable marked in blue in the figure below is the high-tension cable, green is the
indicator light cable, and red is VGA cable. Pull out the three cables.

Remove the four screws marked in yellow in the figure below.

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Summary of Contents for SDS series

Page 1: ...SDS Series Smart Digital Storage Oscilloscopes Service Manual SDS6062 SDS7102 SDS8102 SDS8202 WWW OWON COM CN ...

Page 2: ...to changes specification at any time without advance notice for latest information please refer to our website OWON is registered trademark of Lilliput Inc Xiamen Lilliput Technology Co Ltd the 5th floor B Area Chuangxin Mansion Software Park ZhenZhuWan Huandao RD Xiamen Fujian China Tel 86 592 2575666 Fax 86 592 2575669 Web www owon com cn Mail sales owon com cn Fujian Lilliput Optoelectronics Te...

Page 3: ...on authorized service center within the warranty period To obtain warranty service contact your nearest Owon authorized service center or send the product with a description of the difficulty postage and insurance prepaid FOB Destination to the nearest Owon authorized service center Owon assumes no risk for damage in transit Following warranty repair the product will be returned to Buyer transport...

Page 4: ... Supply Requirement 9 2 7 Cleaning Requirements 9 Section 3 Test and Calibration 10 3 1 Equipment for Testing 10 3 2 Test Standard 10 3 3 Inspection Items and Methods 10 Section 4 Debugging and Calibration 17 4 1 Brief Introduction 17 4 2 Tools and Devices 17 4 3 The Interval Time to Calibration 17 4 4 Auto calibration 17 4 5 Attenuation Compensation Capacitance Calibration 17 Section 5 Maintenanc...

Page 5: ... the battery box 22 Figure 16 Assemble the battery box 22 Figure 17 Remove the screws of rear panel 24 Figure 18 Unsnap the rear panel 1 24 Figure 19 Unsnap the rear panel 2 25 Figure 20 Disconnect the rear panel 25 Figure 21 Remove the battery box container 26 Figure 22 Cables to power supply board 27 Figure 23 Screws of power supply board 27 Figure 24 Disconnect the screen data cable 28 Figure 2...

Page 6: ...pears possibly on the product Danger The term Danger is used in this manual to indicate that when you read this mark personal injury may be caused to you immediately Warning The term Warning is used in this manual to indicate that when you read this mark personal injury may not be caused to you immediately but you need to be cautionary Notice The term Notice is used in this manual to indicate that...

Page 7: ... values of all terminals To avoid fire or electric shock please keep a watchful eye on all nominal values and marks specified for this product Before any connection performed on this product carefully read the user s manual of the product for further information of nominal values No operation is allowed without the instrument cover plate If the cover plate or panel has been removed do not perform ...

Page 8: ... adapter supplied with the test tool or indicated by OWON as suitable for the Oscilloscope Multimeter Before use inspect voltage probes test leads and accessories for mechanical damage and replace when damaged Remove all probes test leads and accessories that are not in use Remove all the PC communication connection Do not apply input voltages above the rating of the instrument Please be careful w...

Page 9: ...es 2 Passive probe 1 2 m 1 1 10 1 CD x 1 PC link application software Power cord 1pcs up to the standards of the country in which it is used USB cable User Manual 1pcs Options Battery 1 3 Technical Specifications Unless otherwise specified the technical specifications applied are applicable to the probe with the attenuation switch setting 10X and the SDS series digital oscilloscope Only if the osc...

Page 10: ... 10pF 5pF Probe attenuation factor 1X 10X 100X 1000X Max input voltage 400V PK PK DC AC PK PK Bandwidth limit 20MHz full bandwidth Channel channel isolation 50Hz 100 1 10MHz 40 1 Input Time delay between channel typical 150ps SDS6062 0 5S s 500MS s single channel 0 5S s 250MS s dual channel SDS7102 0 5S s 1GS s single channel 0 5S s 500MS s dual channel SDS8102 0 5S s 2GS s single channel 0 5S s 1...

Page 11: ...verter 8 bits resolution 2 Channels simultaneously Sensitivity 2mV div 10V div SDS6062 10 div SDS7102 SDS8102 Displacement SDS8202 1V 2mV1100mV 10V 200mV11V 100V 2V110V Analog bandwidth 60MHz 100MHz 200MHz 300MHz Single bandwidth Full bandwidth Low Frequency 5Hz at input AC coupling 3dB SDS6062 5 8ns at input Typical SDS7102 3 5ns at input Typical SDS8102 3 5ns at input Typical Rise time SDS8202 1...

Page 12: ...Preshoot Freq Period Rise Time Fall Time Delay A B DelayA B Width Width Duty Duty Waveform Math FFT Waveform storage 15 waveforms Bandw idth Full bandwidth Lissajous figure Phase differe nce 3 degrees Frequency typical 1KHz square wave Communication port USB2 0 USB for file storage VGA port or RS 232 Single channel is when only one input channel is working 4 ...

Page 13: ... Trigger Holdoff range 100ns 10s 50 level setting typical Input signal frequency 50Hz slope Rising Falling Edge trigger Sensitivity 0 3div Trigger condition Positive pulse 0 negative pulse 0 Pulse trigger Pulse Width range 24ns110s Modulation Support standard NTSC PAL and SECAM broadcast systems Video Trigger Line number range 1 525 NTSC and 1 625 PAL SECAM Trigger condition Positive pulse 0 negat...

Page 14: ...e Typical About 5V with the Peak to Peak voltage equal to or greater than 1M of load Frequency Typical Square wave of 1KHz Table 2 General Specifications cont Power Mains Voltage 1001240 VAC RMS 50 60Hz CAT II Power Consumption 18W Fuse 1A T grade 250V Battery optional Cell 558792 4000mAh 3 7V Pack 2s2p 7 4V 8000mAh Mechanical Specifications Dimension 340mm 155mm 70mm L H W Weight About 1 82 kilog...

Page 15: ...d Laboratory use part 1 General Requirements EN61326 1 2006 Electrical Equipment for Measurement Control and Laboratory use EMC Requirements part 1 General Requirements EN61000 3 2 2006 A2 2009 Electromagnetic Compatibility EMC part 3 Limits Section 2 Limits for Harmonic Current Emissions Equipment Input Current less than equal to 16A per phase EN61000 3 3 2008 Electromagnetic Compatibility EMC pa...

Page 16: ...strument is damaged in its appearance or it fails in normal operation or performance test consult the OWON dealer responsible for such a business or the local office of OWON If the instrument is damaged due to transportation keep the packing in a proper place and consult the transportation department and the OWON dealer responsible for such business who will provide an instrument replacement or ma...

Page 17: ...the country of use Make sure that the product is properly be grounded 2 7 Cleaning Requirements Cleaning Inspect the instrument and probes as often as operating conditions require To clean the instrument exterior perform the following steps 1 Wipe the dust from the instrument and probe surface with a soft cloth Do not make any scuffing on the transparent LCD protection screen when clean the LCD sc...

Page 18: ...a scar and deformation The juncture of the front cover and the back cover should be matched seamless The screws are all fixed without loose And the keyboards are flexible and light when pressing B Functional inspection First power up the oscilloscope and come into measurement Second check all the keys and input 1KHz calibrating signals then press Autoset the oscilloscope should display waveforms a...

Page 19: ...cated value is the correction to the error of sweep rate and the error should be anti symbol Figure 2 Waveform of sweep rate and error inspection C Repeat step B and test sweep rate for other channels 3 3 3 Time measurement and error inspection A As shown by Figure 1 connected B Set the output time period of the calibration as A press Autoset to display the stable waveform Then also set the measur...

Page 20: ...ed value is the correct value of the error of sweep rate base error is anti symbol C Repeat step B and test voltage division for each channel 3 3 5 Voltage measurement and error inspection A As shown by figure 3 connected B Make the calibration to output amplitude A of square wave 1 KHz press Autoset and adjust to display the stable waveforms Set the measured window 1 as the peak peak value of Cha...

Page 21: ...ent response inspection B Set the period of the faster edge pulse as 1uS adjust its output amplitude to make the waveform take up about 80 spare of the checked working amplitude on the screen usually 6 grids and regulate the zero point position to make the 0 of amplitude A and the 100 of amplitude A align with the level of calibration line respectively then also adjust the time base and trigger le...

Page 22: ...y channel 3 3 9 Linear error inspection for vertical movement A As shown by Figure 4 connected The CH1 is set as follows Coupling AC Channel On Probe 1X Invert Off Time base division 1ms Measured window 1 Peak peak value of CH1 B Make the signal generator output 1KHz of sine wave and adjust output voltage until the displayed amplitude 50 center of the checked working spare record the peak peak val...

Page 23: ...splayed amplitude which is the open circuit noise 3 3 13 Maximum input voltage testing A As shown by Figure 9 connected Tested oscilloscope Voltage Source CH1 BNC Q connection Figure 9 Connection of maximum input voltage testing B Turn on the unit set the input coupling as DC and zero position at the center Then adjust the output voltage to be in accordance with the set value in product standard I...

Page 24: ...sion at 200mV and adjust the output frequency of the signal generator as technical requirement until the oscilloscope could locate the waveform stable with stepping up the output amplitude therefore the voltage amplitude is the triggering sensitivity C Test for the range of triggering level Adjust the output amplitude of the signal generator as technical requirement and the triggering level positi...

Page 25: ...program must be executed For the performing of the self calibration all probes or wires should be disconnected with the input connector first Press the Utility button then press H1 button to call out the Function menu turn the M knob to choose Adjust Press H2 button to choose the option Self Cal run the program after everything is ready 4 5 Attenuation Compensation Capacitance Calibration The step...

Page 26: ...ase read the safety outline as a warning 5 3 Circuit Diagram SDS Series oscilloscope makes up dual channel of digital storage oscilloscope and auto multi meter which the human machine interface is composed of the keyboard and LCD also with the serial ports and USB interface The hardware is composed of 5 numbers of modules The following Figure 10 is the brief diagram Figure 10 SDS series block diag...

Page 27: ...N4148 D6 1N4148 R24 510R 1 AC 1 2 AC 2 3 4 D1 KB P210 R26 100R R25 100R GND0 V8 4 GND0 R12 1K R14 1K 1 o R27 2 4K 1 o R20 10K R29 15K GND0 U1 TL431 R11 1K R16 1K R18 1 6K C14 C104 R13 1K R15 1K GNDP R32 0R33 1W V8 4P R30 R182 R31 R912 V 7 6 GNDP C17 2A681J D7 SR160 GNDP GND0 G 3 D 1 S 2 Q1 UTC 5N60L 1 2 J1 SOCBAT 1 2 3 4 5 6 7 J2 SW V8 4P C22 33uF 400V 1 2 J4 HEATSINK V8 4 V8 4 5 6 7 U7B LM 393 GN...

Page 28: ...erse order You should pay attention to the Notice for installation when installation 1 Power switch Button Use a soft cotton to encase the power switch button to avoid scratching by pliers pull out the button with pliers Figure 12 Remove the Power switch button Notice for installation Just press the power switch button to its hole 2 Ground Connection Place the oscilloscope face down on soft surfac...

Page 29: ...nnection 3 Battery Box Place the instrument with the bottom facing you Loosen the two screws that secure the battery box to the rear chassis do not take it off Figure 14 Loosen the screws of battery box Take the two screws to pull the battery box out 21 ...

Page 30: ...s the figure below insert it into the battery box container Figure 16 Assemble the battery box 4 Rear Panel Remove the four screws that secure the rear panel with a cross screwdriver Notice for installation The shortest screw should be installed in the screw hole marked in red in the third figure below 22 ...

Page 31: ...Section 5 Maintenance 23 ...

Page 32: ...panel Place the oscilloscope on its feet on soft surface with the front facing you Release the snap marked in red in the figure below Figure 18 Unsnap the rear panel 1 Place the instrument upside down release the two snaps marked in red in the figure below 24 ...

Page 33: ... is the grounding wire Remove the screw secure the grounding wire to disconnect it Grasp and pull up on the AC line power cable to disconnect it from power supply board Figure 20 Disconnect the rear panel 5 Battery box Container Remove the four screws marked in yellow in the figure below Lift the battery box container a little be ware that it is still be connected by the battery power cable which ...

Page 34: ... Grasp and pull out the battery power cable Figure 21 Remove the battery box container 6 Power supply Board The cable marked in yellow is the power cable of adapter plate the red is transfer cable Disconnect both of them 26 ...

Page 35: ...Section 5 Maintenance Figure 22 Cables to power supply board Remove the three screws marked in yellow lift off the power supply board Figure 23 Screws of power supply board 7 Adapter plate 27 ...

Page 36: ...refully Figure 24 Disconnect the screen data cable The cable marked in blue in the figure below is the high tension cable green is the indicator light cable and red is VGA cable Pull out the three cables Remove the four screws marked in yellow in the figure below 28 ...

Page 37: ...Section 5 Maintenance Figure 25 Screws and cables of the adapter plate Pull out the adapter plate carefully Figure 26 Remove the adapter plate 8 Chassis including Fan and LCD 29 ...

Page 38: ...ove the plastic cushion marked in the figure below Figure 27 Remove plastic cushion Remove the six screws marked in the figure below Lift the chassis a little be aware that it is still connected to the main board by a cable 30 ...

Page 39: ...Section 5 Maintenance Figure 28 Screws of the chassis Grasp and pull up on the fan power cable marked in the figure below 31 ...

Page 40: ...Section 5 Maintenance Figure 29 Fan power cable of the chassis Notice for installation Make sure that the label of the LCD protection do not be covered by the front panel 32 ...

Page 41: ...all the chassis 1 Pull the indicator light cable and VGA cable through the holes in the chassis as the figure below Figure 31 Install the chassis 2 9 Main Board Remove the three screws marked in the figure below lift off the main board 33 ...

Page 42: ...ion 5 Maintenance Figure 32 Screws secure the main board Notice for installation The 2 6 Pin interface of main board should be matched to the one marked in the Figure 34 Figure 33 Install the main board 34 ...

Page 43: ...Section 5 Maintenance 10 Done The left assembly include key board and front panel Figure 34 Key board and front panel 35 ...

Page 44: ...e the test signal of 1KHz 5V output normally Replace Main board Does the scope display normally No Yes Are the Main board and LCD connected correctly Reconnect loose cables No No Yes Yes Replace the LCD Does the oscilloscope operate OK No Yes Replace Main board Done Proceed to Figure 36 Figure 35 Troubleshooting procedure 1 36 ...

Page 45: ...Section 5 Maintenance Figure 36 Troubleshooting procedure 2 37 ...

Page 46: ...02 V1 1 Fan JD 6010S1MO Main key board SDS KEY V1 3 F1 F5 H1 H5 Key board SDS KEY2 V1 4 LCD AT080TN52 Battery WMDC 2XPL509092 2 6 2 Order Information Please record the names models and quantity of the accessories you want to order and contact with the nearest OWON service center If the accessories are not in the above list please kindly record the serial number and describe the accessories include...

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