HP Color LaserJet CM4730 Service Manual - Page 141

Clean the MFP To maintain print quality, clean the MFP thoroughly every time you replace the print cartridge and whenever print-quality problems occur. WARNING! Avoid touching the fusing area when cleaning the MFP. It can be hot. CAUTION: To avoid permanent damage to the print cartridge, do not use ammonia-based cleaners on or around the MFP except as directed. Clean the outside of the MFP ● Clean the outside of the MFP if it is visibly marked. ● Use a soft, lint-free cloth dampened with water, or water and a mild detergent. Clean the touchscreen Clean the touchscreen whenever it is necessary to remove fingerprints or dust. Wipe the touchscreen gently with a clean, water-dampened, lint-free cloth. CAUTION: Use water only. Solvents or cleaners can damage the touchscreen. Do not pour or spray water directly onto the touchscreen. Clean the scanner glass ● Clean the scanner glass only if dirt is visible, or if you are experiencing a decrease in copy quality, such as streaking. ● Clean the scanner glass by wiping it gently with a clean, slightly damp, lint-free cloth. Use an ammonia-based surface cleaner only when a water-dampened cloth does not clean the scanner glass. CAUTION: Do not pour or spray liquids directly onto the scanner glass. Do not press hard on the glass surface. (You could break the glass). ENWW Clean the MFP 121