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 Tests
Port 0
Port 1
Port 2
Port 3
Test J
Test K
Test SEO NAK
Test Packet
Test Force Enable
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.
7421
Service menus
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