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Chapter 5 Troubleshooting
No. Class
Status
29
30
Spoken words
cannot be heard on
the device
31
32
33
Noise is generated
34
on the device.
35
The LINK/ACT
36
LED for the LAN
port is not turned
on.
37
38
39
40
Device setting
through a LAN is
disabled.
41
The DEC LED is
42
blinking.
IP-900E/IP-900D series
Description
Has the receiving unit been
powered on?
Isn't "None" selected in the audio
format setting of the encoder?
Are connections correct between
the receiving unit and speakers?
Is ALM LED turned on?
Does noise disappear when
disconnecting LAN cable?
Does noise disappear when
disconnecting audio input cable
from the encoder?
Is packet loss occurring?
(Is DEC LED blinking?)
Is the power to the
communication destination device
turned on?
Are the LINK LEDs on this
device and the hub turned on?
Is the IP address specified from
the Web browser correct?
Are the network settings (IP
address, subnet mask, etc.) on the
control terminal PC correct?
Is a reply received in response to
a PING command issued to the IP
address of the device?
Is ALM LED blinking?
Error is occurring in the received
stream data. Make sure that
connected network and the
encoder are set/operated correctly.
Check the power and operation of the
receiving unit.
Select an item other than "None" and set audio
to be encoded.
Check the connection between the receiving unit
and speakers.
Refer to clause 3 in this table.
If not, this device is considered as abnormal.
If so, audio signal input to the encoder is
considered to be mixed with noise.
Check the audio output device.
Refer to clause 42 in this table.
Verify the power supply and operation of the
communication destination device.
If the LINK LEDs are not ON, the LAN cable is
not connected. Connect the LAN cable
correctly.
Specify a correct IP address from the Web
browser on the control terminal.
Make correct settings by referring to the PC
user's guide and OS handbook. If this device
is started with the default settings made before
shipment from the factory, see "Section 3.3.1,
"Settings," for the network settings for the
control terminal PC.
If a reply is not received, turn on the power to
the device while holding down the MNT button
to start the system with the default IP address
(10.0.0.1) set before shipment from the factory.
Confirm the IP address. If the problem
persists, check the status on the LAN. For
information on this startup procedure, see
Section 3.6, "Special Use of Cancel Key."
IP address mode setting is not proper.
After rebooting the device with the default IP
address set before shipment from the factory,
connect to the Web and confirm these alarm
codes.
・L009 DHCP connection failure
Make sure that DHCP-related setting and
DHCP server setting/operation of this device
are correct.
・L00A PPPoE connection failure
Make sure that PPPoE-related setting and
PPPeE server (carrier side) operation of this
device are correct.
For details, please refer to the Software User's
Guide.
If so, confirm the followings.
・ Is system bit rate exceeding connected network
capacity?
・Are FEC/ARQ settings of this device and the
encoder correct?
・Are the network device and LAN port settings
(AUTO, Full/Half-duplex, etc) the same?
60
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