Pioneer DDJ-RB Service Manual page 16

1
A
[5-2] The HEAD PHONE signal is not output.
Before checking through the table below, check if the settings of the PC application are correct.
No. Cause Diagnostics Point
0 Wrong input setting Input setting of the
of the application application installed
installed on the PC on the PC
1 Loose connection MAIN Assy
/defective parts
B
2 ——— MAIN Assy
3 Loose connection MAIN Assy
/defective parts
4 Mute signal MAIN Assy
Loose connection
/defective parts
C
5 Loose connection MAIN Assy
/defective parts
6 Loose connection HPJK Assy
/defective parts
D
[6] AUDIO IN
[6-1] The MIC INPUT signal is not output
Check if the MASTER OUT signal is normal, then if it is, check through this article.
No. Cause Diagnostics Point
0 Wrong input setting Input setting of the
of the application application installed
installed on the PC on the PC
1 Loose connection MAIN Assy
E /defective parts
2 Loose connection MAIN Assy
/defective parts
3 Loose connection MAIN Assy
/defective parts
F
16
1
2
Item to be Checked
Check that the input setting of the
application installed on the PC is
appropriate.
Check the audio signal (HP_L/R), using
pins 5 and 7 of the JH101 on the MAIN
Assy.
Check the audio output signal, using
pins 10 and 11 of the HP DAC (IC701).
Check the audio input signal, using
pins 3 and 5 of the HP AMP (IC706).
Check the audio output signal, using
pins 1 and 7 of the HP AMP (IC706).
Check the level of the muting signal
(IC706 pin 2) for HP AMP.
Check the digital input signals to DAC
(IC701) for HP.
• MCLK: pin 1
• BCLK: pin 2
• DATA: pin 3
• LRCK: pin 4
• XRST: pin 5
Identify the point where the audio signal is
interrupted on the line from JH101 to the
jacks (JA2601).
Item to be Checked
Check that the input setting of the
application installed on the PC is
appropriate.
Check the audio signal (MIC_IN), using
JA701 on MAIN Assy.
Check the audio signal (MIC_ADC) on
MAIN Assy.
Check the digital input signals to ADC
(IC708) for MIC.
• MCLK: pin 11
• BCLK: pin 12
• DATA: pin 9
• LRCK: pin 10
• XRST: pin 5
DDJ-RB
2
3
Corrective Action
The PC will not recognize the unit if the input
setting of the application installed on the PC is
inappropriate.
If no audio signal is output, the MAIN Assy may
be defective. Go to [2].
If an audio signal is output, connection between
the HPJK and MAIN Assys may be loose,
connections inside the HPJK Assy may be loose,
or these Assys may be defective. Go to [6].
If an audio signal is output, go to [3].
If an audio signal is not output, go to [5].
If the output signal is normal, connection of the
audio signal between HP AMP IC706 and
JH101 may be loose.
If the input signal is abnormal, connection of the
audio input signal line may be loose or the
resistor or capacitor may be defective.
If the input signal is normal but the output signal
is abnormal, go to [4].
Normally, the muting signal must be high
(Approx. 3.3 V, muting canceled). When it is low
(Approx. 0 V), muting is activated and no sound
is output. The signal line may be defective.
If the muting signal is high and normal, possibly
HP AMP is defective.
If any of those signals is abnormal, connection
of the corresponding signal line may be loose or
the resistor, capacitor, UCOM (IC406) may be
defective. If all signals are normal, the DAC
(IC701) and its peripheral circuitry do not
function properly.
If audio signals is abnormal, connection of the
corresponding signal line may be loose or the
resistor, capacitor, jack terminal may be
defective.
Corrective Action
The PC will not recognize the unit if the input
setting of the application installed on the PC is
inappropriate.
If no signal is output, the MIC jack or MIC cable
may be defective. If an signal is output,
connection of the corresponding signal line
may be loose or the resistor, capacitor,
OP amp, MIC volume ADC (IC708) may be defective.
If no signal is output, connection of the
corresponding signal line may be loose or the
resistor, capacitor, OP amp, MIC volume, jack
terminal may be defective.If an signal is output,
the ADC (IC708) and its peripheral circuitry may
be defective.
If any of those signals is abnormal, connection
of the corresponding signal line may be loose or
the resistor, capacitor, UCOM (IC406) may be
defective. If all signals are normal, the ADC
(IC708) and its peripheral circuitry do not
function properly.
3
4
Reference
Operating instructions
10.13 WAVEFORMS
AB
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10.13 WAVEFORMS
tuvwx
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Reference
Operating instructions
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10.13 WAVEFORMS
tuv
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