III. SCHEDULED SERVICING TABLE1. As a rule, provide scheduled servicing every 250,000 copies.2. Check the Service Record before setting out on a visit, and take any parts likelyto need replacement.3. If you use alcohol to clean a charging wire, check to make sure it has fully driedbefore installing it to the machine.COPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 10 MAINTENANCE AND INSPECTION10-4Caution:Step123456WorkMeet the person in charge.Take notes of the counter reading.Make test copies.Clean the charging assemblies:• Charging wire• Grid wire• Shielding plate• Roller electrodeClean the optical path:• Scanner reflecting plate• Scanner side reflecting plate• Lens• No. 1/2/3/4/5/6 mirror• Dust-proofing glass• Pre-exposure lamp sheet• Standard white plate• Heat absorbing glassCheck the waste toner case.ChecksCheck the generalcondition.Check the faulty copies.a. Density of imageb. Dirt on backgroundc. Clarity of charactersd. Leading edge margine. Fixing, registration,back (for soiling)f. Counter operationIf the waste toner case ishalf full or more, disposeof the toner in a plasticbag; or, replace the wastetoner case.RemarksStandard: 4.5 ±1.5mm (Direct)Dry wipe with lint-free paper; then,clean with alcohol.Use a blowerbrush; if necessary,use alcohol.Moist clothDry wipe.
