Xerox DocuColor 12/DCCS50, Service Manual

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1/05
3-32
DocuColor 12/DCCS50
IQ 30 Fuser Offsetting RAP, IQ 31 Fuser Oil Streak
Reissue
Image Quality
IQ 31 Fuser Oil Streak RAP
Process direction streaks that show up first on transparencies or coated paper as low gloss
streaks in solid areas. In severe cases, oil streaks can show up on paper as low density streaks
in large halftone areas.
Initial Actions
NOTE: The primary cause of oil streaks is contamination of the oil Metering Blade.
While the Fuser is still warm, clean the External Heat Roll using the Cleaning Procedures in
Section 1. If the toner buildup cannot be removed, replace the roll ( PL 8.8 ).
Check the HFSI counter for “Oil System” in the Detailed Maintenance Activities . If the count is
at or near 80,000, Install a new Oil System Repair Kit, (includes Donor Roll Assembly, Wick
and Oil Filter) (includes Tag P12 and TAG P21). After Installing a new Oil System Kit, reset
HSFI Counters 10-811 and 10-814.
Procedure
NOTE: Carefully observe the orientation of the Metering Blade to the Pickup Roll before disas-
sembling it. Notice that there is an “F” stamped into the front frame of the Metering Blade and
the Donor Roll Assembly Frame. When reassembling the Metering Blade, ensure that the two
“Fs” are located at the front of the Donor Roll Assembly.
NOTE: If the Metering Blade has less than 10,000 copies/prints on it, removing and cleaning
the Metering Blade/Oil System Roll, and Donor Roll with a lint-free cloth (600S1276) and fuser
oil should correct the problem. If the Metering Blade/Oil System has between 10,000 and
70,000 copies on it, perform the following steps:
1. Replace the Metering Blade REP 8.2.1 ( PL 8.9 ), being careful to avoid contaminating the
blade edge during replacement. While replacing the blade, clean the Donor Roll and
Pickup Roll with a lint-free cloth (600S1276) and fuser oil. Before installing the blade, wipe
the edge with a lint-free cloth and oil. Finally, wipe the edge of the blade with a clean fin-
ger.
2. Tear off the corner from a sheet of 24#, (90 gsm) copy paper. After assembling the Meter-
ing Blade to the Pickup Roll, slide one of the clean edges of the paper between the blade
and the roll, inboard to outboard, to clean off any remaining contamination.
3. Inspect the Oil Wick and wipe off the surface with a lint-free cloth.
4. Clean or replace the following parts as required:
•
Heat Roll ( PL 8.3 )
• Pressure Roll ( PL 8.3 )
5. Ensure that the Donor roll and Pickup Roll are in contact with each other after the Donor
Roll Assembly has been installed (
REP 8.2.1 ).
6. Advance the Web manually to a clean area. Enter Diagnostics. Access NVM Location
777-079 and increase the value by 7,000 for each 25mm/one inch that the web was
advanced.
7. Perform the Standard Fuser Break-In Procedure ( GP 1 Fuser Break-In Procedure ).
777-136 167 161 777-312 168 159
Table 1 Fuser temperature NVM values
NVM loc. Default value New value NVM loc. Default value New value
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