16
DDJ-ERGO-V
1
2
3
4
A
B
C
D
E
F
1
2
3
4
5.2 TROUBLESHOOTING
[0] Prior Confirmation
[0-1] Checking in Service Mode
[0] Prior Confirmation
[0-1] Checking in Service Mode
[0-2] Checking Internal Cables
[1] Failure in Startup (Failure in power-on)
[1-1] Failure in the power system
[1-2] Failure in the microcomputer system
[2] Display (LED indicators)
[2-1] Any one of the LEDs does not light.
[2-2] Several LEDs do not light or abnormal light
[3] Operations (Buttons/Rotary selectors/
V
olumes/Faders
/Sliders/JOG)
[3-1] The buttons are disabled.
[3-2] Rotary selector not controllable
[3-3]
V
Rs or faders or sliders not controllable
[3-4] Abnormalities regarding the JOG
[4] USB connection
[4-1] The unit cannot be recognized by the PC when
connected to the PC via USB connection.
[5] AUDIO OUT
[5-1] The MASTER OUT1/MASTER OUT2 is not output.
[5-2] The HEAD PHO
N
E signal is not output.
[6] AUDIO I
N
[6-1] The input signal to AUX/MIC is not output
[7] Basic Operation Check of the MAI
N
UCOM
1
———
Service mode
Identify a failure point.
After a failure point is identified, see the section
referenced in this manual.
6. SER
V
ICE MODE
[0-2] Checking Internal Cables
1
Disconnection,
breakage, or
loose connection
of internal cables
Cables
Check that all the cables are securely
connected. Check that there is no
breakage in the cables.
Securely connect a cable if it is not connected.
If a cable is broken, replace it.
Note:
If an FFC cable is disconnected, be careful of
the orientation of the contacts when reconnecting it,
referring to the printed guide on the board.
4.1 O
V
ERALL
W
IRI
N
G DIAGRAM
Contents
[1] Failure in Startup (Failure in power-on)
[1-1] Failure in the power system
1
Failure in the
power system (1)
LED indications of
the unit
Set the PO
W
ER switch to O
N
.
Check if the CH Fader LED on the left
deck is flashing.
If it is, power failure in other than
V
+
V
BUS and
V
+3R3_UCOM is suspected.
See “6 Failure in the power system (2)” in this
table.
4.3 PO
W
ER BLOCK
DIAGRAM
5.3
V
OLTAGE
MO
N
ITORI
N
G
2
Failure in USB-
bus power
IFP
W
Assy
V
+
V
BUS
Set the PO
W
ER switch to OFF.
Check that the voltage of the
V
+
V
BUS
power line is in the range of 4.75–5.25
V
.
If the voltage is outside the range of 4.75–5.25
V
,
failure in the USB-bus power and its periphery
may be suspected. Check the USB cable and
USB connector.
4.3 PO
W
ER BLOCK
DIAGRAM
10.12
V
OLTAGES
1
3
Control error of the
V
+3R3_UCOM
regulator on the
IFP
W
Assy
IFP
W
Assy
CDJ1 Assy
Set the PO
W
ER switch to O
N
.
Check the voltage at Pin 1 (CO
N
T) of the
V
+3R3_UCOM regulator.
If the voltage at Pin 1 (CO
N
T) of the
V
+3R3_UCOM regulator is low, the S101 power
switch or Q301, or their peripheral circuits may
be defective.
4.3 PO
W
ER BLOCK
DIAGRAM
In a case where the unit is not started after the USB cable is connected and the unit is turned O
N
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
