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Service Manual for OL400e/OL410e/OL410e-PS
Chapter 4 Failure & Repair Analysis
4.8.03 Serial Interface Loopback Test
The Serial Interface Loopback Test verifies the proper operation of the serial port and
its associated circuitry.
To perform the Serial Interface Loopback Test do the following.
- You need a 9 to 25 pin adapter, if you do not have a 9 pin Loopback Test Connector.
- Place a DB-25P or 9 pin Loopback Test Connector on the serial port (The configuration
is shown below).
- Press and hold RECOVERY while powering ON the printer to select the System
Maintenance Mode.
- Toggle through the selections by pressing MENU1/MENU2 until you get to Loop test.
- Press ENTER to start the Loopback Test.
- When an error occurs during this test, a corresponding error message will be
displayed.
- Press ON-LINE to exit this test
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Summary of Contents for OL400e Series
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