Owon SDS series - Page 44

Section 5: Maintenance
5.6 Examination and Maintenance
Power on the
oscilloscope.
Does the display
backlight light up?
No
Yes
Dose 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