HP LaserJet 4100 Service Manual - Page 41
User-replaceable parts, Replacing user-replaceable parts - perform printer maintenance
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User-replaceable parts Hint Note Replacing user-replaceable parts To ensure that the product maintains optimal performance, replace certain parts when the Perform Printer Maintenance message appears on the product control-panel display. The maintenance message appears every 200,000 pages (default setting). To check the number of pages the product has printed, either print a configuration page or a supplies status page. See "Evaluate the information pages" on page 130. To order a print-unit maintenance kit, see the HP LaserJet 4100 series printer service manual. Unless they are damaged, the ADF pickup roller, separation roller, and separation pad should not need to be replaced. Table 7. User-replaceable parts MFP Item Procedure Interval ADF unit See "ADF unit" on page 78. User replaceable. As required. ADF input tray See "ADF input tray" on page 73. User replaceable. As required. ADF delivery guide (clear mylar strip) See the removal step in "Cleaning the User replaceable. As ADF delivery guide (clear mylar strip)" on required. page 37. ADF pickup roller See "ADF pickup roller" on page 74. User replaceable. As required. ADF separation roller See "ADF separation roller" on page 76. User replaceable. As required. ADF separation pad See "ADF separation pad" on page 77. User replaceable. As required. ADF separation assembly compression spring See "ADF separation pad" on page 77 User replaceable. As and "ADF unit (2 of 2)" on page 160. required. ADF pick/feed cover See "ADF separation pad" on page 77 User replaceable. As and "ADF unit (2 of 2)" on page 160. required. ADF delivery guide holder (clear See the step in "Cleaning the ADF mylar sheet holder) delivery guide (clear mylar strip)" on page 37 and "ADF unit (1 of 2)" on page 158. User replaceable. As required. ADF face-up bin handle See "Covers" on page 148. User replaceable. As required. 5GB hard disk drive To locate the hard drive, see "Back view" User replaceable. As on page 21. required. C9148-90909 4 Maintenance 39