Section 5: Maintenance; Brief Introduction; Preparation And Safety Event; Circuit Diagram - Owon SDS Series Service Manual

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.
Power supply
6P-2.5
board
The schematic circuit diagram of the power supply is as follows:

Section 5: Maintenance

Section 5: Maintenance
LCD
50P-0.5
Adapter plate
2P-3.96
Battery

Figure 16: SDS series block diagram

Main key board
6P-2.0
18P-2.0
Main board
22
F1-F5, H1-H5
6P-2.0
Key board