18
DJS-1000
1
2
3
4
A
B
C
D
E
F
1
2
3
4
Does the audio signal exist
in IC5
3
0
3
1pin, 2pin?
[Observation point
J
L
, waveform 9
]
Yes
Yes
Yes
No
No
Is the audio signal properly
output from IC520
3
9pin?
[Observation point
, waveform 11
]
Yes
Yes
No
Failure in the analog audio input circuit
-> Confirm that each output of IC5
3
00 to IC5
3
02 is normal
No
No
No
No
Failure in IC2000 and peripheral circuit
Yes
Failure in IC540
3
, IC5504 or failure in the
Q5500 peripheral circuit
Yes
Yes
Failure in the output circuit of IC5502 or later or
failure in the Mute Transistor peripheral circuit
(Q5501, Q5502, Q5505, Q5506)
Failure in the output circuit of IC550
3
, IC5504
or later or failure in the Mute Transistor
peripheral circuit
(Q5501, Q5502, Q5505, Q5506)
Failure in the reset control line peripheral
circuit
-> Confirm the route from IC2000 output to
IC5500 in order
Failure in the audio CLK peripheral circuit
-> Confirm the IC5204, IC5207 4pin output
and CLK output of IC2000
Failure in the audio CLK peripheral circuit
-> Confirm the IC500
8
, IC5012 4pin output and LRCK output of IC2000
Is IC520
3
1
3
pin set to the HI level?
No
Yes
Failure in the reset control line peripheral circuit
-> Confirm the route from IC2000 output to IC5
3
00 in order
Failure in IC 520
3
No sound comes out from the OUT1-2 terminal
No sound comes out
from both OUT1 and OUT2
No
Yes
Are MCK, BCK, LRCK
correctly input to IC5500?
[Observation point
E
X
D
, waveform 10
]
Failure in the MUTE peripheral circuit
No
Is L_MUTE/L2_MUTE
set to the LOW level?
[Observation point
?
\
]
No sound comes out from
OUT1 only
No sound comes out from
OUT2 THRU route only
Assign the 1kHz/0dBV file to the pad
Adjust the TRACK VOLTE to 100
Turn on the LOOP playback
Press the pad assigned to the song and then play it
A
Does level meter of the track
that is set in the THRU deflect?
Yes
No
Failure in the output circuit
(Go to Audio Output Trouble flowchart)
Is IC5500
3
2pin
set to the HI level?
[Observation point
Z
]
Are MCK, BCK, LRCK
correctly input to IC520
3
?
[Observation point
M
N
, waveform 10
]
B
