No display on VFD, and buttons do not work
No
No
No
Yes
Yes
No display on VFD, and
buttons do not work
Check every supply
voltage on main board is
normal
Refer to Power supply board part
Check the U2’s pin 2,4,8 arrive the
U3’s pin 6,8,9 connect condition
Correct connection
Replace U3 or VFD
Yes
Yes
Yes
No
Check-28V,5V,+12V
voltage on the power
and front board
Check the front board
signals SCK,SDA, STB
1.Check whether bad solder exists
on U3 and pins of VFD,
2.Check whether the circuit
connected to K1, K2, K3, K4, K5,
K6 is broken.
Fix the connection JP4 on front board
and XP2 on power board
Trouble shooting chart
5-1
Summary of Contents for BDP3000
Page 43: ...Front Board Print layout Top and Bottom side 7 13 7 13 ...
Page 44: ...Power Board Print layout Bottom side Switch Board Print layout Bottom side 7 14 7 14 ...
Page 45: ...Power Board Print layout for BDP3000 93 Bottom side 7 14 7 14 ...
Page 46: ...Main Board Print layout Top side 7 15 7 15 ...
Page 47: ...Main Board Print layout Bottom side 7 16 7 16 ...
Page 55: ...REVISION LIST Version 1 0 Initial release for BDP3000 55 93 98 94 96 9 1 ...