Pioneer XW-HTP550 Manual de servicio - Página 37
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5
(2-2) In a case where no sound is output
(A)
Are the IC12 and
IC13 in MAIN Assy
broken?
Yes
The +B and ground circuits are
most likely to be short-circuited,
or IC3302 is likely to be broken.
5
6
(B)
IC3302
No
STANDBY(pin 5) : "H"?
MUTE(pin 6) : "L"?
Yes
Detach the
RX module, then by
inputting an audio signal to the
jumper lead for servicing(*2),
check if sound is
output.
Sound is output.
It is most likely that the RX module
or Transmitter section is in failure.
To diagnosis of the Transmitter section
XW-HTP550
6
7
No
Check the circuits around Q3305
and Q3511.
No
Check the audio lines sequentially
sound
from jumper lead to amplifier input
(IC3302 pin 2 and pin 4).
(*2) See page 39.
7
8
A
B
C
D
E
F
37
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