Service manual

Page 8-5
Section 8. Troubleshooting
Rev. A
SATO M-8485Se Standard Print Engine
Service Manual
8.6 The LAN Ethernet Interface
Printer Does Not Come UP Ready
If you cannot print to the print server after you install it, check the following:
1. Make sure that the printer is powered on, that all cables are securely plugged in, and that the
printer is on-line.
2. If possible, connect a terminal to the serial port. If you see the boot prompt, the print server
firmware has not been loaded properly. If reloading does not fix the problem, try setting
switch 1 to ON (factory defaults) and powering the print server off and then on again. If the
problem persists, the product may be defective.
Installation Problems (Printer Comes Up Ready but You Cannot Print)
If the printer starts up OK but you cannot print, the problem could be one of the following:
 There is a problem with the interface between the print server and the printer.
 There is a problem with the network connection or cabling.
 There is a queue setup problem, a print server setup problem, or other protocol-related
problem.
Checking the Interface between the Print Server and the Printer
First make sure that the cable between the print server and the printer is securely plugged in at
both sides. Then:
Wait about two minutes after the printer is powered on and then run a printer self-test (see
Section 2 Configuration for information on how to run the self test).
 If the self-test does not print, then there is probably a hardware problem. Double check the
connections.
 In some rare instances, disabling NBUF with the command SET PORT P1 NBUF DISABLED
will solve port compatibility issues.
Checking the Network Connection and Cabling
If the self-test page prints but you cannot print documents, first check the network connection
and cabling.
1. If you are connecting to a 10baseT network, verify that the OK LED is on. If the appropriate
LEDs are not on, there is probably a bad 10baseT or 100baseTX cable or the hub port is bad.
If possible, try a different cable and hub port, or try connecting a different device (such as a
PC) to the cable.
2. If you are using a repeater or hub, make sure that SQE (heartbeat) is turned off at the hub
(this is the default setting for most hubs). Also, if you have a hub or multiport repeater,
verify that the hub or repeater port is good by trying the print server on a different port.