12
z
No sound issue
Power supply unit
No sound
Yes
No
Check
No
Picture is diaplayed. But no sound
Take off the back cover and
check ifl wires of
the speakers
terminals have been well
connected to the
PCB-Main
and
speakers
?
Are the voltages applied to
CN2
①②
of the power
supply unit?
Are the signals applied to
P23
①②③④
of the
PBC-Main?
Are there signals on
the speaker terminals?
Yes
Yes
Yes
Speakers
PCB-Main or PCB-I/O
No
No
PCB-Audio
PCB-Speaker
Connector
(CN2)
①+15.5~16V ②GND
(P23) ①NC ②L ③GND ④R
Содержание 42HDM12
Страница 9: ......
Страница 10: ......
Страница 22: ...22 7 Block Diagram z Plasma Monitor ...
Страница 23: ...23 z Power Module ...
Страница 24: ...24 8 Connection Diagram ...
Страница 27: ...26 10 Basic Block Diagram ...
Страница 28: ...27 11 Printed Wiring Board Diagram z Main Board Top Side ...
Страница 29: ...28 z Main Board Bottom Side ...
Страница 30: ...29 z I O Board Top Side z RS 232 Board Top Side Audio Board Top Side ...
Страница 31: ...30 z Audio Transfer Board Top Side L Bottom Side R ...
Страница 33: ...32 z HDMI Board Top Side L Bottom Side R ...
Страница 34: ...33 z Power Board ...
Страница 35: ...34 12 Disassembly Diagram z Mechanical ...
Страница 36: ...35 z Packing ...