19
VSX-523-K
5
6
7
8
5
6
7
8
A
B
C
D
E
F
D
E
A
B
C
Check the voltage.
(MAI
N
Assy
W
7 pin 10: +12
V
)
(MAI
N
Assy
W
7 pin 13: -12
V
)
Check the voltage.
(MAI
N
Assy
W
7 pin 10: +12
V
)
(MAI
N
Assy
W
7 pin 13: -12
V
)
Are the signal on CO
N
CT
Assy C
N
110 pin 9, 11?
Are the signal on CO
N
CT
Assy C
N
109 pin 5, 7?
Are the signals on CO
N
CT
Assy C
N
109 pin 1, 3?
Are the signals on MAI
N
Assy CP110 pin 1, 3?
Is Digital signal from OPT
(or COAX) input OK?
I
N
PUT?
N
o
Auto Surround
Check between MAI
N
Assy CP110
and CO
N
CT Assy C
N
110.
N
o Check the data signals at the following locations.
V
OL_CLK pin 7,
V
OL_DATA pin
8
, C
N
20
8
(CPU Assy) - CP15 (MAI
N
Assy)
Check CP15 pin 7 (
V
OL_CLK),
pin
8
(
V
OL_DATA).
Repair IC400 and its peripheral
circuit or replace MAI
N
Assy.
Check and repair analog audio lines
between IC400 pin54, 55 and
CP110 pin1, 3 or replace MAI
N
Assy.
N
o
N
o
N
o
N
o
N
o
N
o
Is the digital signal
on D-MAI
N
Assy
CP200
8
pin 1?
N
o
N
o
N
o
N
o
N
o
Analog
input
Digital
input
Replace MAI
N
Assy.
Replace CO
N
CT Assy.
Replace CO
N
CT Assy.
Replace OPTCO Assy.
N
o Problem /
N
o Damage
Yes
Yes
Repair IC402, IC403 and its peripheral
circuit or replace MAI
N
Assy.
Repair IC2011 (AK45
88
) and its
peripheral circuit or replace D-MAI
N
Assy.
Check selection of speaker system
by [SPEAKERS] key on front panel
is correct.
Check signals of problem channel
on AMP5 Assy CP401 pin 3 (SL),
5(C), 7(SR).
Check signals of problem channel
on CO
N
CT Assy C
N
110 pin 7 (SR),
5 (SL), 3 (C), 1 (S
W
).
N
o
N
o
Check signals of problem channel
on CO
N
CT Assy C
N
109 pin 9 (SR),
11 (SL),13 (C),15 (S
W
).
Check and repair AMP circuit of problem
channels or replace AMP5 Assy.
Check relay operating. (Refer to Relay
Control Check flow for Front ch.)
Yes
Check signal line between
C
N
109 and C
N
110.
Yes
Yes
Yes
Yes
Yes
Repair IC2011 (AK45
88
) and its
peripheral circuit or replace D-MAI
N
Assy.
Change speaker system to correct
setting.
Select surround mode to EX.STEREO
in Advanced Surround .
Check CPU Assy C
N
20
8
pin 4
(C_RLY) pin 5 (S_RLY).
N
o sound from Speaker System
is "SP: OFF" is selected,
Yes
Yes
Yes
Yes
Replace MAI
N
Assy
or their peripheral circuit.
Yes
Check the signal C
N
109 - C
N
110
or replace CO
N
CT Assy.
Yes
Check +/- 12
V
line on MAI
N
Assy
or replace MAI
N
Assy.
Yes
Speaker C (SB etc) ch (Front LR is OK)
jomi
Содержание RRV4418
Страница 25: ...23 VSX 523 K 5 6 7 8 5 6 7 8 A B C D E F 2 TEMP Protection Circuit CPU ASSY F AMP5 ASSY G AMP5 ASSY G j o m i ...
Страница 48: ...46 VSX 523 K 1 2 3 4 A B C D E F 1 2 3 4 9 2 EXTERIOR SECTION I L K J D H Nut Nut HP plate j o m i ...
Страница 51: ...49 VSX 523 K 5 6 7 8 5 6 7 8 A B C D E F j o m i ...
