Owon SDS7102V - Section 5: Maintenance; Brief Introduction; Preparation and Safety Event; Circuit Diagram

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Section 5: Maintenance

5.1 Brief Introduction

In the part, we will provide you the circuit diagram, the replaceable parts, the disassembling

method and the maintenance process.

5.2 Preparation and Safety Event

Before disassembling the oscilloscope, please 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 17 is the brief diagram.

LCD

Battery

Main key board

Power supply

board

Main boardAdapter plate

18P-2.0

F1-F5, H1-H5

Key board

6P-2.5

50P-0.5

6P-2.0

2P-3.96

Figure 16: SDS series block diagram

The schematic circuit diagram of the power supply is as follows:

Main Page

Table of Contents4
General Safety Summary6
Section 1: General Information9
Introduction9
Accessories Supplied9
Technical Specifications9
Table 1: Specifications10
General Technical Specifications15
Table 2: General Specifications15
Declaration of Conformity16
Section 2: Installation17
Performing the General Inspection17
Operating Environment17
Storage and Transport17
Table 3: Environment17
Packaging18
Tagging for Service18
Power Supply Requirement18
Cleaning Requirements18
Section 3: Test and Calibration19
Equipment for Testing19
Test Standard19
Inspection Items and Methods19
Figure 1: Connection of Sweep Rate and Error Inspection20
Figure 2: Waveform of Sweep Rate and Error Inspection20
Figure 3: Connection of Voltage Division and Error Inspection21
Figure 4: Connection of Voltage Measurement and Error Inspection21
Figure 5: Connection of Transient Response Inspection22
Figure 6: Waveform of Transient Response Inspection22
Figure 7: Connection of Vertical Movement Range Inspection23
Figure 8: Connection of Input Impedance Inspection24
Figure 9: Connection of Maximum Input Voltage Testing24
Section 4: Debugging and Calibration26
Brief Introduction26
Tools and Devices26
The Interval Time to Calibration26
Auto-Calibration26
Attenuation Compensation Capacitance and Resistance Calibration26
Figure 10: Attenuation Switch27
Figure 11: Connection of Calibrating the Probe in the CH127
Figure 12: Displayed Waveforms of the Probe Compensation27
Figure 13: Adjust Probe27
Figure 14: the Position of the Attenuation Compensation Capacitance28
Figure 15: the Position of the Attenuation Compensation Resistance29
Section 5: Maintenance30
Brief Introduction30
Preparation and Safety Event30
Circuit Diagram30
Figure 16: SDS Series Block Diagram30
Removal and Installation Procedures32
Figure 17: the Schematic Circuit Diagram of the Power Supply32
Figure 18: Loosen the Screws of Battery Box32
Figure 19: Remove the Battery Box Cover32
Figure 20: Remove the Ground Connection33
Figure 21: Remove the Screws of Rear Panel34
Figure 22: Unsnap the Rear Panel (1)34
Figure 23: Unsnap the Rear Panel (2)34
Figure 24: Disconnect the Rear Panel and Remove the Battery Box Container35
Figure 25: Remove Power Supply Board35
Figure 26: Screws and Cables of the Adapter Plate36
Figure 27: Remove the Adapter Plate36
Figure 28: Remove the Chassis37
Figure 29: Fan Power Cable of the Chassis37
Figure 30: Install the Chassis (1)38
Figure 31: Install the Chassis (2)38
Figure 32: Screws Secure the Fan39
Figure 33: Screws Secure the Main Board39
Figure 34: Remove the Main Board40
Examination and Maintenance42
Figure 35: Troubleshooting Procedure (1)42
Figure 36: Troubleshooting Procedure (2)43
Section 6: Replaceable Parts44
Replaceable Parts List44
Order Information44
Table 4: Replaceable Parts List44

Owon SDS7102V - Section 5: Maintenance; Brief Introduction; Preparation and Safety Event; Circuit Diagram

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