HP Color LaserJet Enterprise CP4020 Service Manual - Page 441
Table 3-31, MP modes under the OPTIMIZE submenu
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Table 3-30 MP modes under the ADJUST PAPER TYPES sub menu (continued) FUSER TEMP MODE If you are seeing a faint image of the page repeated at the bottom of the page or on the following page, first make sure the Paper Type and Print Mode settings are correct for the type of paper you are using. If you continue to see ghost images on your print jobs, set the Fuser Temp feature to one of the Alternate settings . Try the ALTERNATE 1 setting first and see if it solves the problem. If you continue to see the problem, try ALTERNATE 2 and then ALTERNATE 3. Using the ALTERNATE 2 and ALTERNATE 3 settings might cause an extra delay between jobs. PAPER CURL MODE Use in high-humidity and high-temperature environments. The REDUCED setting decreases fuser temperature and increases the interpage gap. Table 3-31 MP modes under the OPTIMIZE submenu NORMAL PAPER Set to SMOOTH when printing on smooth paper of normal weight. HEAVY PAPER Set to SMOOTH when printing on smooth, heavy media types. ENVELOPE MODE Set to REDUCED TEMP if envelopes are sticking due to moisture in the envelop adhesive. ENVIRONMENT Set to LOW TEMP if the product is operating in a lowtemperature environment and you are having problems with print quality such as blisters in the printed image. LINE VOLTAGE Set to LOW VOLTAGE if the product is operating in a lowvoltage environment and you are having problems with print quality such as blisters in the printed image. TRAY1 Set the mode to ALTERNATE if you are seeing marks on the back side of the paper when printing from Tray 1. This sets the product to initiate a clean sequence every time a job finishes when the product is set for ANY SIZE and ANY TYPE for Tray 1. BACKGROUND Set to ALTERNATIVE 1 when a background occurs all over the page. Set to ALTERNATIVE 2 when thin vertical lines appear on the page. Set to ALTERNATIVE 3 when the other alternatives do not correct the problem. UNIFORMITY CONTROL Set to ALTERNATIVE 1 to improve uniformity on any paper type. Set to ALTERNATIVE 2 to improve uniformity on normal and light paper types. Set to ALTERNATIVE 3 when the other alternatives do not correct the problem. TRACKING CONTROL Improves color stability by adjusting the bias voltage. Make sure this mode is set to ON. REGISTRATION Set to ALTERNATIVE when color misregistration occurs. TRANSFER CONTROL Set to ALTERNATIVE 1 to reduce primary transfer bias and to resolve low density or blotchy images. Set to ALTERNATIVE 2 to resolve ghosting outlines that look like a finger or fingers. Set to ALTERNATIVE 3 when the other alternatives do not correct the problem. PROCESS CLEANING PAGE Generates and processes a fuser cleaning page for the dn printer and HP Color LaserJet CP4525xh printer only. ENWW Use manual print modes 409