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5
Flow [A]
AUDIO ASSY diagnostic
No
AUDIO ASSY
JP3001 2,5 pin ±12V
Yes
AUDIO ASSY
CN2861 11,12,13 pin
No
Clock,Data
when master volume is
changed
Yes
Continue the following flow or
replace AUDIO ASSY
AUDIO ASSY
No
C3025,3026 ± 7V
Yes
AUDIO ASSY
Check IC2501,IC3273
power supply pins
(13 pin:+7V, 9 pin: -7V)
OK
AUDIO ASSY
Check IC2501,IC3273
clock(10 pin), data pins(11 pin)
OK
Input the analog audio signal,
set to "Pure Direct",
Check the analog signal path
Other results
Dignose and repair NG point
e.g. if selecting "CD", check
INL11 58 pin / INR11 57 pin,
outputs is FROUT 8 pin / FLOUT 7 pin
5
6
Check ±12V power supply path
A-REG AUDIO ASSY
Diagnose or replace
DIGITAL MAIN ASSY
Diagnose the circuits
arround Q3001,Q3002
NG
Check the power supply path
NG
Check the clock, data signal path
IN:OK,OUT:NG
at IC2501
Replace IC2501
6
7
Other results
ALL NG
SC-65
7
8
Repair or replace NG point
Diagnose A-REG ASSY
(arround IC7501,IC7502)
or replace A-REG ASSY
8
A
B
C
D
E
F
35
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