23
DDJ-ERGO-V
5
6
7
8
5
6
7
8
A
B
C
D
E
F
8
Loose connection
/defective parts
JACK Assy
Check the external Audio input signal
(AUX I
N
), using pin 7 for IC2903/IC2904
(S
W
AMP).
If a signal is input, go to [10].
If no signal is input, check for the audio signal that is
input to the AUX connector (JA2902) and
transmitted to the S
W
AMP (IC2903, IC2904).
If the input signal is abnormal, connection of the
corresponding signal line may be loose or the resistor,
capacitor, OP AMP (IC2901), AUX I
N
V
OL (
V
R2901),
or jack (JA2902) may be defective.
———
9
Loose connection
/defective parts
JACK Assy
Check the MIC Audio input signal, using
pin 2 for IC2903/IC2904 (S
W
AMP).
If a signal is input, go to [10].
If no signal is input, check for the audio signal that is
input to the MIC connector (JA2901) and transmitted
to the S
W
AMP (IC2903, IC2904).
If the input signal is abnormal, connection of the
corresponding signal line may be loose or the resistor,
capacitor, OP AMP (IC2901), MIC I
N
V
OL (
V
R2902),
or jack (JA2901) may be defective.
———
10
Loose connection
/defective parts
JACK Assy
IFP
W
Assy
CDJ1 Assy
Check the switching control signal from
Pin 1 of the S
W
AMP (IC2903/IC2904)
when the AUX/MIC selector (S2901) is
switched.
N
ormally, the switching control signal is low when
the selector is set to AUX and high when the
selector is set to MIC.
If the switching control signal is not normal, the
MIC_AUXI
N
_SEL or MIC_AUXI
N
_S
W
signal line
may be loose, or the resistor, transistor, MAI
N
UCOM
(IC1002), or switch (S2901) may be defective.
10.12
V
OLTAGES
10.13
W
A
V
EFORMS
qrs
[6] AUDIO IN
[6-1] The input signal to AUX/MIC is not output
0
Defective input
signal, wrong setting
of the AUX/MIC
selector, or wrong
input setting of the
application on the PC
Input signal to the
AUX I
N
/MIC connector,
setting of the AUX/MIC
selector, or the input
setting of the application
on the PC
Check that the signal input to the unit is
normal.
Check that the AUX/MIC selector is correctly
set.
Check that the input setting of the
application installed on the PC is appropriate.
If the input setting of the application installed on
the PC is not appropriate, the signal input to the
AUX_I
N
/MIC connector will not be output.
Operating instructions
1
———
AUX I
N
/MIC input
terminal
AUX/MIC selector
switch
Identify the connector(s) whose input
signal(s) is(are) not output.
Check if the signal can be input neither AUX nor
MIC or either of them.
• If neither of them can receive signals, go to [2].
• If only the AUX connector cannot receive signals,
go to [
8
].
• If only the MIC connector cannot receive signals,
go to [9].
———
2
———
IFP
W
Assy
Check that the selected MIC_AUXI
N
_L/R
audio signals are input to Pins 1 and 3 of
C
N
101 on the IFP
W
Assy.
• If an audio signal is input, go to [3].
• If an audio signal is not input, go to [7].
———
3
———
IFP
W
Assy
Check that the selected audio signals are
input to Pins 1 and 2 of ADC (IC503).
• If an audio signal is input, go to [4].
• If an audio signal is not input, go to [5] or [6].
———
4
Loose connection
/defective parts
IFP
W
Assy
Check the digital input/output signals to
ADC (IC503).
• MIC_AUX_DATA: pin 9
• LRCK: pin 10
• MCLK: pin 11
• BCLK: pin 12
• ADC_DAC_XRST: pin 13
If any signal is abnormal, connection of the
corresponding signal line may be loose or the
resistor, capacitor, or ADC (IC503) may be
defective. Or the USB Controller (IC102) or
MAI
N
UCOM (IC1002) may be defective.
If all signals are normal, connection of the
MIC_AUX_DATA signal line may be loose or the
USB Controller (IC102) may be defective.
10.13
W
A
V
EFORMS
bcdqt
5
Loose connection
/defective parts
IFP
W
Assy
Check the ADC_MUTE signal.
N
ormally, the ADC_MUTE signal must be low
(muting canceled).
W
hen it is high, muting is
activated and no sound is output. the ADC_MUTE
signal becomes low, possibly because connection
of the corresponding signal line is loose or the
Muting circuit (Q505) or Muting Drive circuit
(Q504, Q503, etc.) is defective.
10.12
V
OLTAGES
10.13
W
A
V
EFORMS
2d
op
6
Loose connection
/defective parts
IFP
W
Assy
Check the MIC_AUXI
N
_MUTE signal.
N
ormally, the MIC_AUXI
N
_MUTE signal must be
low (muting canceled).
W
hen it is high, muting is
activated and no sound is output. The
MIC_AUXI
N
_MUTE signal becomes high, possibly
because connection of the signal line is loose or the
transistor (Q510) or MAI
N
UCOM (IC1002) is defective.
10.12
V
OLTAGES
10.13
W
A
V
EFORMS
2d
op
7
Loose connection
/defective parts
JACK Assy
Check the Audio output signal
(MIC_AUXI
N
_L/R), using pin 5 of
IC2903/IC2904 (S
W
AMP).
If no signal is output, the voltages of
V
+7_J and
V
-6_J power inside the JACK Assy may be abnormal
or the S
W
AMP (IC2903/IC2904) may be defective.
———
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
