Pioneer Kuro Elite PRO-141FD, Руководство по обслуживанию

Страница: 62 / 238

62
PRO-141FD
1 2 3 4
A
B
C
D
E
F
1 2 3 4
Yes
Yes
No
Check the cable connecting the external device with this unit.
Poor connection at the audio connection terminals (JA3001 and
JA3002) or breakage of the signal lines from JA3001 or JA3002 to
IC3101 can also be suspected.
The speaker cables are short-circuited,
or the speaker is in failure.
Is a signal input to IC3101?
(INPUT1: pins 40,45
INPUT 2: pins 39,46)
Yes
Yes
No
No
Check parts located between Pins 7, 8, and 9 of CN3001 and Pins
18, 19, and 20 of IC3101, respectively. If they are OK, the MAIN
Assy or IC3101 is in failure.
When the speaker cables are
disconnected, are signals output
from the speaker terminals?
No
Line breakage at R3132, poor connection at CN3003,
or failure in the Power Supply Unit
Is a voltage (+12 V) supplied to
IC3201?
Yes
No
Short-circuiting of circuit components located from around the LPF
(L3204, L3205, L3206, and L3207) to the speaker connectors, or
failure in IC3201 Is a PWM signal output from
IC3201?
(pins 48, 41, 38, 31)
Yes
Yes
No
Line breakage in the circuit connected to Pin 6 of CN3001,
or poor connection at CN301
In Normal Operation mode, is
voltage of 7.5 V or higher output
from Pin 9 (STBY/MUTE) of
IC3201?
Replace the I/O Assy
25 26
27 28
No
Has a control signal arrived at
IC3101?
(pins 18 to 20)
Failure in IC3101
Is a analog audio signal output
from IC3101?
(pins 23, 14)
Yes
29
31
32
30
B
[7] I/O ASSY
Go to .
A
Flowchart of Failure Analysis for The Audio System (KRP-600M only)
No
No
No
No
No
Has the sound been emitted from
the speakers?
Sound of all functions does not
output?
Yes
Check the speakers and speaker
cables. Is it no problem?
Is sound muting set?
Is the volume set to 0?
Is the output setting (sync
with the input video signal) for the
AUDIO input connector correct?
No
Check the initial audio input setting.
Replace the speakers or speaker
cables.
Cancel muting, then check again.
Yes
Yes
Yes
Raise the volume, then check again.
=> AU1