Canon imagePRESS C7000VP Series Trouble Shooting Information

Also see for imagePRESS C7000VP Series: Brochure & specs Installation manual Service guide Customer expectation document Customer expectation document

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Canon imagePRESS C7000VP Series Trouble Shooting Information Manual pdf 66 page image

Trouble Shooting Information for C7000VP seriesPage 66 Rev. 2.02010/09/173.3 Soiled back side due to toner at secondary transfer external roller DescriptionThe following two controls have been added in order to improve toner-cleaning performance forthe secondary transfer external roller.1. Shorten the amount of time to bias the secondary transfer external roller.2. In order to clean the roller, add a cleaning sequence in which a black band patch is formedduring post rotation and toner is applied to the secondary transfer external roller on thecondition that the following two requirements are met. Each counters for the secondary transfer external roller and the secondary transfercleaning brush roller is 5000 prints or less (in case of LTR paper) One job is 50 prints or less (in case of LTR paper) Field Remedy1. Upgrade DCON to Ver26.05, and set service mode (level 2) > COPIER > ADJUST > HV-TR> 2ELSW > 1. (2ELSW is to switch the secondary transfer static eliminator bias to ON orOFF, 0: OFF, 1: ON)2. Replace the secondary transfer external roller and the secondary transfer cleaning brushroller (2 pcs.) at the same time. Otherwise, a difference in abrasion between these tworollers may worsen this symptom.3. Clear these rollers’ counter to 0 after replacement in the service mode below. COPIER > Counter > DRBL-1 > 2TR-R0LL (secondary transfer external roller) COPIER > Counter > DRBL-1 > 2TRCL-RL (secondary transfer cleaning brush roller)* The newly added sequence will operate in sync with the counter 2TRCL-RL.3.4 Soiled back side cases reported from field Case #1: Due to broken shaft of toner discharging screwThere are some reported instances from the field where this symptom was caused by a brokenshaft of the toner discharging screw of the secondary transfer external roller-cleaning unit. Thus,check the screw shaft at the occurrence of soiled backside.Note that it is difficult to confirm the breakage visually. Case #2: Due to dirty fixing feed beltClean the fixing feed belt. Case #3: Due to dirty fixing inlet guide assemblyClean the fixing inlet guide. Case #4: Due to waste toner accumulated in secondary transfer cleaningunitBreak down toner accumulation inside the unit.