26
DDJ-ERGO-V
1
2
3
4
A
B
C
D
E
F
1
2
3
4
5.4 ABOUT POWER-SAVING MODE
This product always monitors voltage drop of the
V
BUS power (power to be supplied via a USB cable), which may be caused
by connection of a peripheral device that is not covered under warranty or an erroneous operation. If an abnormality is
detected, the product will limit the maximum output level of the headphone so that it can operate in a lower
power-consumption mode.
If an abnormality is generated, check the connected headphones and PC.
Drop in power voltage in the IFP
W
Assy to be supplied via a USB cable
Power voltages to be monitored:
V
+
V
BUS,
V
+5_USB
• Content to be monitored
V
BUS_DET signal TP terminal on IFP
W
Assy or IC1002 (MAI
N
_UCOM) pin 1
V
BUS_DET input terminal on CDJ1 Assy.
N
ormal: 2.3
V
to 2.6
V
Abnormal:
2.3
V
or less
FAULT_DET2 signal TP terminal on IFP
W
Assy or IC1002 (MAI
N
_UCOM) pin 1
8
FAULT_DET2 input terminal on CDJ1 Assy.
N
ormal: Approximately 3.3
V
Abnormal:
0
V
• Microcomputer Detection terminal and its terminal voltage
1.25 sec after the unit is turned O
N
• Timing of monitoring start
50 msec after an error is detected
• Timing upon judgment as a failure
V+VBUS (V+5_USB): 4.2–4.5 V
The maximum output level of the headphone is suppressed to approximately 15%, and the LEDs for the selected decks
(Decks A or C, and B or D) flash at intervals of 1 sec.
If normal power voltage is recovered, the suppressed maximum output level of the headphone will return to its original level.
V+VBUS (V+5_USB): 4.2 V or less
The product will be restarted, with the maximum output level of the headphone suppressed to approximately 3%. If power
voltage has been recovered after startup, the LEDs for the selected decks (Decks A or C, and B or D) flash at intervals of
0.5 sec. The unit can be operated in the normal way. If power voltage has not been recovered after restart, only the LEDs
for the selected decks (Decks A or C, and B or D) flash at intervals of 0.2 sec, with all other LEDs unlit. The unit cannot be
operated in the normal way.
• LED indication when an error is generated
1
Check if two sets of headphones are simultaneously connected.
2
Check if headphones with impedance outside the range of the guaranteed specifications (impedance 32 ohms or less)
are
connected.
3
Check if a monaural plug is connected to the Headphones connector.
4
The connected PC may not be able to supply enough USB power (may not meet USB standards).
• Items to be checked
