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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
Summary of Contents for DVP520/00
Page 22: ...Service Engineer Remarks 6 2 ...
Page 24: ...6 4 6 4 FRONT BOARD Top Side FRONT BOARD Bottom Side SWITCH BOARD ...
Page 26: ...Service Engineer Remarks 6 6 ...
Page 28: ...Service Engineer Remarks 7 2 ...
Page 30: ...7 4 7 4 POWER BOARD ...
Page 34: ...Service Engineer Remarks 8 2 ...
Page 41: ...8 9 8 9 MAIN BOARD Top Side ...
Page 42: ...MAIN BOARD Bottom Side 8 10 8 10 ...
Page 48: ...Service Engineer Remarks 8 16 ...
Page 49: ...9 1 MAIN ENCASING EXPLODED VIEW ...
Page 51: ...REVISION LIST Version 1 0 Initial release 10 1 ...