HP d640 HP D640 High-Volume Printer - User Manual (Printer and Accessories), C - Page 276
The Ripple Test Print, Troubleshooting with the Ripple Test Pattern, At the Main Screen, press Test.
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The Ripple Test Print The Ripple Test Print The printer provides a test print ripple pattern that is useful in checking print quality and paper feeding. The test print pattern uses the font and point size specified in the PCL menu. To print a test print ripple pattern: 1. At the Main Screen, press Test. SETUPS is highlighted. 2. Press Ĭ to TESTPRINT. TESTPRINT is highlighted. 3. Press Select. Note TESTPRINT will print several pages. You can change the number of pages printed by altering the testpages configuration in the Maintenance menu (See "Maintenance Menu Settings" on page 2-24). Figure E-9 shows the ripple test pattern. The pattern allows visual observations of print quality. Troubleshooting with the Ripple Test Pattern The ripple test pattern can help determine if the printer is operating at optimum performance or if it needs maintenance. 1. Look at the test pattern and other print jobs that indicate print quality problems. 2. Go to "Maintaining Print Quality" on page 6-1 and follow the instructions for comparing your observations to the supplied problem samples. 3. Identify the problem with the sample and perform the maintenance as described. E-16 Printing Reports