21
DDJ-ERGO-V
5
6
7
8
5
6
7
8
A
B
C
D
E
F
4
1012
V
OLTAGES
10.13
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A
V
EFORMS
de
mn
6
Loose connection
/defective parts
IFP
W
Assy
Check the digital input signals to DAC
(IC501) for MASTER OUT.
• MCLK: pin 1
• BCLK: pin 2
• MASTER_DATA: pin 3
• LRCK: pin 4
• ADC_DAC_XRST: pin 5
If any of those signals is abnormal, connection
of the corresponding signal line may be loose or
the resistor, capacitor, USB Controller (IC102),
or MAI
N
UCOM (IC1002) may be defective.
10.13
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A
V
EFORMS
bcdlvw
7
MASTER OUT1
Loose connection
/defective parts
JACK Assy
IFP
W
Assy
Identify the point where the audio signal is
interrupted on the line from C
N
101 to the
jacks (JA2904/JA2905).
The audio signal may be interrupted by a loose connection
of the signal line or by a defective resistor, capacitor,
transistor, operational amps (IC506, IC507,) or jacks.
10.13
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V
EFORMS
xyz
8
MASTER OUT2
Loose connection
/defective parts
JACK Assy
IFP
W
Assy
Identify the point where the audio signal is
interrupted on the line from C
N
101 to the
jacks (JA2903).
The audio signal may be interrupted by a loose
connection of the signal line or by a defective resistor,
capacitor, transistor, or jacks.
10.13
W
A
V
EFORMS
xA
Mute signal
Loose connection
/defective parts
IFP
W
Assy
Check the levels of the MUTE and
A_MUTE audio muting signals.
N
ormally, the MUTE signal must be low (muting
canceled).
W
hen it is high, muting is activated and no
sound is output. The MUTE signal becomes high,
possibly because connection of the corresponding
signal line is loose or the Muting circuit (Q501) or
Muting Drive circuit (Q502, Q50
8
, Q509, D506, etc.)
is defective.
5
1012
V
OLTAGES
10.13
W
A
V
EFORMS
de
mn
Mute signal
Loose connection
/defective parts
IFP
W
Assy
CDJ1 Assy
Check the level of the A_MUTE audio
muting signal.
N
ormally, the A_MUTE signal must be low (muting
canceled).
W
hen it is high, muting is activated and no
sound is output. The A_MUTE signal becomes high,
possibly because connection of the signal line is loose
or the transistor (Q507) or MAI
N
UCOM (IC1002) is
defective.
[5] AUDIO OUT
[5-1] The MASTER OUT1/MASTER OUT2 is not output.
0
W
rong input setting
of the application
installed on the PC
Input setting of the
application installed
on the PC
Check that the input setting of the
application installed on the PC is
appropriate.
The PC will not recognize the unit if the input
setting of the application installed on the PC is
inappropriate.
Operating instructions
1
———
MASTER OUT1
terminal
MASTER OUT2
terminal
Identify the connector(s) that do(es) not
output signals.
Check if no signal is output from both MASTER 1
and 2 or either of them.
• If neither MASTER 1 nor 2 connector outputs,
go to [2].
• If only the MASTER 1 connector does not output,
go to [7].
• If only the MASTER 2 connector does not output,
go to [
8
].
———
3
———
IFP
W
Assy
Check that an audio signal is output from
DAC (IC501 pin 10, 11).
• If an audio signal is output, go to [4] or [5].
• If an audio signal is not output, go to [6].
10.13
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A
V
EFORMS
xyz
2
Loose connection
/defective parts
IFP
W
Assy
Check the audio signal (MASTER2_L/R),
using pins 15 and 19 of the C
N
101 on the
IFP
W
Assy.
If audio signal is output, loose connection or
defective parts in the JACK Assy may be suspected.
• If an audio signal is output, go to [7] or [
8
].
• If an audio signal is not output, go to [3].
10.13
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A
V
EFORMS
xA
[4] USB connection
[4-1] The unit cannot be recognized by the PC when connected to the PC via USB connection.
0
W
rong input setting
of the application
installed on the PC
Input setting of the
application installed
on the PC
Check that the input setting of the
application installed on the PC is
appropriate.
The PC will not recognize the unit if the input
setting of the application installed on the PC is
inappropriate.
Operating instructions
1
Failure in startup IFP
W
Assy
CDJ1 Assy
Check the lighting statuses of the LEDs
during startup.
If no LED lights, see [1] Failure in Startup.
[1] Failure in Startup
2
Defective USB
Controller
IFP
W
Assy
Check the communication waveforms of
the USB_DP/D
N
lines.
If the unit is connected to a PC via the USB cable,
communication will be performed through the USB
DP/D
N
lines.
If communication cannot be performed, check the
USB cable, connectors, internal cables, resistors,
capacitors, and filters.
If nothing is wrong with them, check the items listed
in “[1-2] Failure in the microcomputer system”.
[1-2] Failure in the
microcomputer
system
10.13
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ef
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
