Pioneer A-70DA-K Service Manual page 15

5
8) No sound (XLR input : A-70DA-K, A-70DA-S only)
No sound (XLR input)
Is there a signal at
RY2101,RY2201(INPUT ASSY ) failure or check of the power supply
CN901 : 5,7,11,13 pins

(XLR ASSY) ?
Is there a signal at
IC9006,IC9007(XLR ASSY) failure or check of the power supply
R9009,R9010,R9019,
R9020 (XLR ASSY) ?

Is there a signal at
Check of the volume operation there is a control signal
C9003,C9004,C9007,
C9008 (XLR ASSY) ?
IC9001 failure
Is there a signal at
C9045,C9046,C9047, IC9004,IC9005(XLR ASSY) failure or check of the power supply
C9048 (XLR ASSY) ?
JA9001,JA9002(XLR ASSY) failure or
connection failure
5
6
Check of the connection between CN2032(INPUT ASSY)
Check of the IC9001(XLR ASSY) or check of the power supply
in 14,15,16 pins.
6
7
[Status of product]
 Insert AC Power cord
 Main unit POWER SW: ON
 POWER ON operation by remote control unit
 Select SPEAKER-A
 INPUT : BALANCED
and CN901(XLR ASSY)
A-70DA-K
7
8
YES
NO
A
B
C
D
E
F
15
8