HP Designjet 2800/3800cp Service Manual - Page 113

5 When the printer has finished aligning the Printheads, the message "SAD Cyan: #.# / SAD Magenta #.#" will be displayed on the front-panel. 6 Press the Up Arrow key and the message "SAD Yellow: #.# / SAD Black #.#" will be displayed on the front-panel. 7 Press the Up Arrow key and the message "C2C X Cyan: #.# / C2C X Magenta #.#" will be displayed on the front-panel. 8 Press the Up Arrow key and the message "C2C X Yellow: #.# / C2C X Black #.#" will be displayed on the front-panel. 9 Press the Up Arrow key and the message "C2C Y Cyan: #.# / C2C Y Magenta #.#" will be displayed on the front-panel. 10 Press the Up Arrow key and the message "C2C Y Yellow: #.# / C2C Y Black #.#" will be displayed on the front-panel. 11 Press the Up Arrow key and the message "BIDIR 20: #.# / BIDIR 28 #.#" will be displayed on the front-panel. 12 Press Previous when you have completed the test. The "D1200 Done" message is displayed on the front-panel if the test exits correctly. For steps 5 thru 12, if the values of the Printheads are between -1.0 and +1.0 for any of the Printheads then the test has passed. For steps 5 thru 12, if the values of the Printheads are NOT between -1.0 and +1.0 for any of the Printheads then the test has failed. If the test fails, to resolve the problem, try one of the following: 1 Perform the Printhead Alignment Calibration ' page 5-13. 2 The Line Sensor is not calibrated correctly. Perform the Line Sensor calibration ' page 5-10. 3 The lens cover, which is installed on the line sensor, is dirty. Replace the lens cover ' Users Guide, Chapter 10 (Lens Maintenance). 4 Perform the Electronics test ' page 4-7. 5 Check if the Media used is suitable for the printer. 6 Check if the Line Sensor is installed and connected correctly. 7 Replace the Carriage Assembly ' page NO TAG. Service Tests HP DesignJet CP Series Printers 4-27