4-1
No display on VFD, and buttons do not work
Trouble shooting chart
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-22Vstb(-22V),5
Vstb(+5v) 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 CN6 on power board
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Содержание DVDR3588H
Страница 24: ...Output Board Print layout Bottom Side for DVDR3588H 93 6 6 6 6 家电维修资料网 免费下载各种维修资料 ...
Страница 25: ...Output Board Print layout Top Side for DVDR3588H 93 6 7 6 7 家电维修资料网 免费下载各种维修资料 ...
Страница 27: ...Power Board Print layout Bottom Side for DVDR3588H 93 6 9 6 9 家电维修资料网 免费下载各种维修资料 ...
Страница 28: ...Power Board Print layout Top Side for DVDR3588H 93 6 10 6 10 家电维修资料网 免费下载各种维修资料 ...
Страница 38: ...Main Board Print layout Top Side for DVDR3588H 93 6 20 6 20 家电维修资料网 免费下载各种维修资料 ...
Страница 39: ...Main Board Print layout Bottom Side for DVDR3588H 93 6 21 6 21 家电维修资料网 免费下载各种维修资料 ...
Страница 41: ...DVDR3588H 93 Ex ploded View 7 2 家电维修资料网 免费下载各种维修资料 ...