Pioneer DDJ-ERGO-V Service Manual page 23

5
[6] AUDIO IN
[6-1] The input signal to AUX/MIC is not output
No. Cause Diagnostics Point
0 Defective input Input signal to the
signal, wrong setting AUX IN/MIC connector,
of the AUX/MIC setting of the AUX/MIC
selector, or wrong selector, or the input
input setting of the setting of the application
application on the PC on the PC
1 ——— AUX IN/MIC input
terminal
AUX/MIC selector
switch
2 ——— IFPW Assy
3 ——— IFPW Assy
4 Loose connection IFPW Assy
/defective parts
5 Loose connection IFPW Assy
/defective parts
6 Loose connection IFPW Assy
/defective parts
7 Loose connection JACK Assy
/defective parts
8 Loose connection JACK Assy
/defective parts
9 Loose connection JACK Assy
/defective parts
10 Loose connection JACK Assy
/defective parts IFPW Assy
CDJ1 Assy
5
6
Item to be Checked
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.
Identify the connector(s) whose input
signal(s) is(are) not output.
Check that the selected MIC_AUXIN_L/R
audio signals are input to Pins 1 and 3 of
CN101 on the IFPW Assy.
Check that the selected audio signals are
input to Pins 1 and 2 of ADC (IC503).
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
Check the ADC_MUTE signal.
Check the MIC_AUXIN_MUTE signal.
Check the Audio output signal
(MIC_AUXIN_L/R), using pin 5 of
IC2903/IC2904 (SW AMP).
Check the external Audio input signal
(AUX IN), using pin 7 for IC2903/IC2904
(SW AMP).
Check the MIC Audio input signal, using
pin 2 for IC2903/IC2904 (SW AMP).
Check the switching control signal from
Pin 1 of the SW AMP (IC2903/IC2904)
when the AUX/MIC selector (S2901) is
switched.
DDJ-ERGO-V
6
7
Corrective Action
If the input setting of the application installed on
the PC is not appropriate, the signal input to the
AUX_IN/MIC connector will not be 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].
• If an audio signal is input, go to [3].
• If an audio signal is not input, go to [7].
• If an audio signal is input, go to [4].
• If an audio signal is not input, go to [5] or [6].
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
MAIN 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.
Normally, the ADC_MUTE signal must be low
(muting canceled). When 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.
Normally, the MIC_AUXIN_MUTE signal must be
low (muting canceled). When it is high, muting is
activated and no sound is output. The
MIC_AUXIN_MUTE signal becomes high, possibly
because connection of the signal line is loose or the
transistor (Q510) or MAIN UCOM (IC1002) is defective.
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 SW AMP (IC2903/IC2904) may be defective.
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 SW 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 IN VOL (VR2901),
or jack (JA2902) may be defective.
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 SW 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 IN VOL (VR2902),
or jack (JA2901) may be defective.
Normally, 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_AUXIN_SEL or MIC_AUXIN_SW signal line
may be loose, or the resistor, transistor, MAIN UCOM
(IC1002), or switch (S2901) may be defective.
7
8
A
Reference
Operating instructions
———
B
———
———
10.13 WAVEFORMS
bcdqt
C
10.12 VOLTAGES
10.13 WAVEFORMS
2dop
10.12 VOLTAGES
10.13 WAVEFORMS
2dop
D
———
———
E
———
10.12 VOLTAGES
10.13 WAVEFORMS
qrs
F
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