Pioneer KRL-46V Service Manual page 39

5
Does not the sound of the audio signal input to INPUT6 (Analog)
go out?
Whether "Analog" has selected it in the Audio setup of the HDMI
option is checked.
MAIN UNIT: YES
Is audio signal sent from pin (2/L) and (3/R) of input terminal
J1502 to pin (1) and (6) of IC1504 (SW)?
Check the connection between J1502 and the peripheral circuit,
the external input devices.
Is audio signal output from pin (15/HDMI_PC_L) and pin (11/HDMI_PC_R) of IC1504 to pin (24) and (26) of connector SC1101?
TERMINAL UNIT: YES
Is audio signal (HDMI_PC_L=MAIN_L, HDMI_PC_R=MAIN_R)
sent to pins (24) and (26) of SC501?
YES
Is audio signal input to pin (59/MAIN_L) and (60/MAIN_R) of
IC1404 (CODEC)?
YES
Refer to "No sound output in all modes".
Does not the sound of the audio signal input to INPUT8 go out?
TEREMINAL UNIT:
Is audio signal sent from pins (2/IN4-L) and (4/IN4-R) of input ter-
minal J502?
YES
Is audio signal sent from pins (57/IN4-L) and (58/IN4-R) of
IC1404?
YES
Refer to "No sound output in all modes".
5
6
No sound from external input devices (4)
Does not the sound of the audio signal input to INPUT7 go out?
MAIN UNIT:
YES Is audio signal sent from pin (2/L) and (3/R) of input terminal
J1501 to pin (3) and (7) of IC1504 (SW)?
Check the connection between J1501 and the peripheral circuit,
the external input devices.
Check the line between IC1504 and SC1101, and their peripheral
circuits.
NO Check the connector (SC1101/SC501)
NO Check the line between P501 and IC1404.
No sound from external input devices (5)
NO Check the connection to J502 and external devices.
NO Check the line between J502 and IC1404.
KRL-46V
6
7
NO
NO
7
8
A
B
C
D
E
F
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