
4-2
The power can not be on or off
Go
Yes
Yes
No
No
The power can’t be
on or off
Yes
Repair the power board
Check the power supply
on the power board is
normal.
Check/Correct
connection of FFC
CN303
Whether the connection
to K301 is broken.
Fix connection
Replace U4.
No
No
Yes
Yes
Check if the FFC CN303
on the front board to CN5
on the decoder board is in
good contact.
Whether there is 0V and
3.3V voltage difference on
Pin 68 of U4.
Trouble shooting chart
All manuals and user guides at all-guides.com
all-guides.com
Summary of Contents for DVP520
Page 22: ...Service Engineer Remarks 6 2 All manuals and user guides at all guides com ...
Page 24: ...All manuals and user guides at all guides com ...
Page 28: ...Service Engineer Remarks 7 2 All manuals and user guides at all guides com ...
Page 30: ...All manuals and user guides at all guides com ...
Page 34: ...Service Engineer Remarks 8 2 All manuals and user guides at all guides com ...
Page 41: ...All manuals and user guides at all guides com a l l g u i d e s c o m ...
Page 42: ...All manuals and user guides at all guides com ...
Page 48: ...Service Engineer Remarks 8 16 All manuals and user guides at all guides com ...
Page 49: ...All manuals and user guides at all guides com ...