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Troubleshooting
tips
We often from our
customers; hear "I can not print via a network!" from
our customers. However, your problem may be solved by
changing the configuration or checking the environment.
This section briefly describes how to "identify the problem
when you can not print." The following is a part of the
confirmation procedure. We hope it will be of help.
When you say, "I cannot print via a network!" most of
you first doubt a printer or print server. However, if
you take the a look at the environment, you notice there
are many elements involved in printing such as a driver
on PC side, LAN cable, OS, etc. Even after the printing
data is sent to the network, it has to go through a LAN
cable, HUB, router, switching HUB etc. The printing data
travels through many devices. Regardless of what element
is causing the problem, it will be recognized as "I can
not print." It is true that the print server may cause
a problem, however, it is dangerous to assume so.
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| Does the product
communicate properly? |
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There are many ways to verify the network
connection such as ping, telnet, ftp (TCP/IP environment).
The network connection can also be verified using the
utility that came with the product.
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| Is the LAN physically
connected? |
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The cables may be broken or have bad contacts.
Replace the cable with the one used for PC or other devices,
and see if the problem occurs again. Some products have
a LED (LINK lamp) that is turned on to indicate proper
connection. Please verify.
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| Difficult to identify
a problem (large environment, unknown cause) |
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If you have another printer (the same model
if available), replace the troubled one and see if the
problem occurs again. You can also check to see if you
can reproduce the problem in an environment where the
printer is locally connected to a PC on a 1 to 1 basis.
As you may notice, the key points are "identify the problem"
and " if the problem can be reproduced." Of course there
are many more things to consider. Let's identify the problem
by eliminating possible causes. When you need assistance,
please feel free to contact us.
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I can not configure.
When
you experience a problem such as "The product can not
be seen on the network." or "Communication error," try
the following methods.
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| Method 1 |
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Verify the physical connection.
Even though you think everything is connected, a LAN cable
may have a loose connection, or a LAN cable and HUB may
have bad contacts.
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Initialize the print server.
In rare cases, unnecessary data may be left in settings.
In that case, push the push switch or "INT" button to
initialize. Refer to the manual for details on how to
initialize.
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| Method 3 (TCP/IP
environment) |
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Take the PC and printer out of the network
and create a 1 to 1 environment for configuration. When
the product is used in a large network, some special devices
may be used without your knowledge, or the product may
not be able to communicate for unexpected reasons. (When
you configure the product for the first time, no settings
are configured.)
Connect your PC and printer (print server) on a 1 to 1
basis (using a cross cable for the 10BASE-T environment)
or connect only your PC and printer to the HUB and then
configure. When the configuration is complete, put the
devices back on the network.
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Trouble with
a temporary IP address
For configuring TCP/IP, the models prior to the print
server series require a temporary IP address configuration.
The temporary IP address configuration will not be written
on the product since it is just a temporary configuration
to communicate with the print server. You may be able
to print using the temporary IP address. However, once
the product is turned off, it will not be able to communicate.
Whether or not the setting is written can be verified
by performing a self diagnostic test. If you are having
troubles including "I need to configure every time I turn
on the product." or "The product will not be able to communicate
when I turn in on again," check the settings of the product.
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How
to configure an IP address
We
often hear "How can I configure an IP address?" from our
users. This section briefly describes how to configure
an IP address.
What is an IP address?
An IP address consists of 4 fields containing 8 bits for
each. The each field is divided by period and has a value
from 0 through 255. The IP address is managed based on
2 sections (network address and host address). In the
example below, "N" indicates network address and "H" indicates
host address. The IP address can be categorized into 3
classes based on the length of the network address.
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(IP
address configuration example for class C)
IP address
Subnet mask
Only the devices with the same network address in a network
segment can communicate with each other.
< Example >
In the example below, "192.168.40.1" can communicate only
a the device with a same (192.168.40.1) network address.
(Can not communicate)
(Can communicate)
If you configure an IP address in a network environment
with 2 desktop PCs, 1 laptop PC, and 1 printer, configure
IP address as below.
Desktop PC A
Desktop PC B
Mobile laptop PC C
Printer: Print server .
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Problem
with RARP or DHCP/BOOTP protocol settings
We often hear from our users that even
though a fixed IP address is configured, RARP Protocol
or DHCP/BOOTP Protocol is enabled. The RARP Protocol or
DHCP/BOOTP Protocol is used to assign an IP address. It
needs to be disabled if you use a fixed IP address. Otherwise,
if you have a DSCP or BOOTP server on your network, the
IP address will be assigned even though an IP address
has already been configured.
Disable the RARP Protocol or DHCP/BOOTP Protocol if you
configured a fixed IP address.
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Print using NetBEUI
NetBEUI is very useful. Connecting the
product to the network allows you to print using NetBEUI.
It does not require any configuration. However, it has
disadvantages as well. Due to NetBEUI specifications,
a communication time out occurs when data can not be received
for a while because of printer off line, error, or consecutive
printing, etc. This is a part of the NetBEUI specifications
and can not be avoided.
It is recommended to change the configuration to use TCP/IP
(LPR) for printing if available in your environment. For
a small network, NetBEUI is suitable. For other networks,
TCP/IP is desired.
Use NetBEUI for the initial configuration of the print
server since it is very useful.
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| * |
Restrictions may apply depending
on printer model. |
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Supports Post Script printers only. |
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Address: Integrate Electronic
Technologies Ltd.,
Rm1206 Kodak House II,39 Healthy St. E., North Point,
Hong Kong
Phone:852-2516 5033 , Fax: 852-2516 5015,
Email: iet@iet.com.hk,
Copyright(C)
Integrate Electronic Technologies Ltd., All rights
reserved.
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