HP 1050c Service Manual - Page 96

Service Tests and Utilities WARNING NOTE 7. Drop Detector The purpose of this test is to verify the operation of the Drop Detector. IF POSSIBLE ALWAYS PERFORM THIS TEST BEFORE REPLACING THE DROP DETECTOR. IF THIS TEST PASSES, DO NOT REPLACE THE DROP DETECTOR. The Service Tests work in a special Mode which does NOT require the full Initialization of the Printer. Therefore it is important that once you have finished with the Service Test, you MUST power OFF the Printer and Power ON again before trying to print. Perform the Drop Detector test as follows: 1 In the Service Tests submenu, scroll to "7. Drop Detector" and press Enter. Service Tests 3. Hard Disk Drive 4. Ink Pressure System 5. Scan Axis 6. Paper Axis 7. Drop Detector Top Back ↑ Make Selection ↓ Enter Press Enter 2 The test will start to initialize and the following message will appear on the front panel: DROP DETECTOR TEST Initializing in Tclware (90s)... Close any open door 4-22 HP DesignJets 1050C and 1055CM Printers Service Manual