Serial 1 Wrap; Usb Hs Test Mode; Duplex Tests; Quick Test - Lexmark MS911 Service Manual

Serial 1 Wrap

This test checks the operation of the serial port hardware using a wrap plug. Each signal is tested. If the test fails, then
replace the controller board.
1
Disconnect the serial interface cable, and then install the wrap plug.
2
Enter the Diagnostics Menu, and then navigate to:
HARDWARE TESTS > Serial 1 Wrap
3
Select a test from the list.
• If the test passes, then the Pass Count increases by 1.
•
If the test fails, then a failure message appears on the display and the Fail Count increases by 1.
The test stops after the maximum count is reached or when a failure occurs.

USB HS Test Mode

This test checks the USB ports for USB high speed certification.
1
Enter the Diagnostics Menu, and then navigate to:
HARDWARE TESTS > USB HS Test Mode
2
Select the port and the type of test.
Ports
Port 0
Port 1
Port 2
Port 3
3
To exit the test, reset the printer.
4
If the test fails, then replace the USB cable.

DUPLEX TESTS

Quick Test

This test determines if the top margin at the back of a duplexed page is set correctly.
1
Enter the Diagnostics Menu, and then navigate to:
DUPLEX TESTS > Quick Test
2
Select any of the following:
• Single—This option prints a single Quick Test page.
•
Continuous—This option continuously prints the Quick Test page until X is pressed.
The printer attempts to print the page from the default paper source.
3
Check the page for the correct offset between the placement of the first scan line on both sides of a duplexed sheet.
Tests
Test J
Test K
Test SEO NAK
Test Packet
Test Force Enable
Service menus
192
4021, 7421