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3-6
No
display
on
LED,
and
buttons
do
not
work
No
No
No
Yes
Yes
No display on LEDD,
and buttons do not work
Check whether there is
correct contact between
XS301 and XP2
Correct connection
Fix power supply board top
a power supply for should
electric circuit
Check whether the circuit connected to
K301,K302, K303, K304 is open or is
broken.
Replace U301 or LED
Yes
Yes
check VCC(+5v) voltage
on the power and front
board
Check there are DATA
signals on XS301 and
XP2on the front board.
Trouble shooting chart
Содержание DVP3980KX/77
Страница 28: ...Front Board Print layout Bottom side 5 11 5 11 ...
Страница 29: ...5 12 5 12 Power Board Print layout Bottom Side ...
Страница 30: ...5 13 5 13 Switch Board Print layout Bottom Side ...
Страница 31: ...5 14 5 14 OK USB Board Print layout Bottom side ...
Страница 32: ...5 15 5 15 Main Board Print layout Top side ...
Страница 33: ...6 14 6 14 Main Board Print layout Bottom side 5 16 5 16 ...
Страница 36: ...REVISION LIST Version 1 0 Initial release Version 1 1 Adding DVP3980KX 77 IM OPU 7 1 ...