Canon NP6251 Service Manual page 535

B. Points to Note for Scheduled Servicing
Caution:
• Make thorough checks of the block (front, rear) for melting by leakage, deformation by heat, tears, and
yellowing. If any fault is found, replace it.
• Be sure to check and clean the inner side as well as the outer side of the block (front, rear).
• Do NOT use a cloth coated with metal powder for cleaning.
• Do NOT use a moist cloth for cleaning. Use lint-free paper, and clean. (Be sure that the part is fully dry
before putting it back into the machine.
• Try to finish all work (scheduled servicing/maintenance) within a specific period of time.
Parts Tools/chemicals
Copyboard glass Alcohol
Lens Blower brush
Heat absorbing glass Lint-free paper
Standard white plate Lint-free paper
Reflecting plate Blower brush
No. 1 through No. 3 Blower brush or lint-
mirrors free paper
Parts Tools/chemicals
Solvent and lint-free
Separation claw
paper
Upper roller, Cleaning oil, lint-free
lower roller
paper
Paper guide Solvent, lint-free paper
Feeding assembly Moist cloth (Note)
Re-pick up assembly,
Alcohol, lint-free paper
refreshing roller
Re-pick up assembly,
Alcohol, lint-free paper
pick-up roller,
registration roller
11-4
Remarks
Cleaning
Cleaning
Dry wiping
Dry wiping
Cleaning
Cleaning with blower brush; if
necessary, lint-free paper
Remarks
Cleaning
Cleaning
Cleaning
Cleaning
Cleaning
Cleaning
Parts Tools/chemicals
Pre-exposure lamp
Anti-stray toner
(primary charging
assembly)
Primary charging
Alcohol, lint-free
assembly,
paper
transfer/separation
charging assembly, pre-
transfer charging assembly
Dust-proofing glass Lint-free paper
Blanking exposure lamp
Anti-stray toner
sheet (developing
assembly)
No. 4 through No. 6 Blower brush or lint-
mirrors free paper
Roller electrode
Developing Moist cloth (Note)
assembly mount
Alcohol, lint-free
Registration roller
paper
Note: Make sure no droplets of water remain.
Parts Tools/chemicals
Multifeeder tray, Alcohol, lint-free
pick-up roller, paper
feeding roller
Alcohol, lint-free
Vertical path roller
paper
COPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Remarks
Cleaning
Cleaning
Dry wiping; then, using lint-
free paper moistened with
alcohol
Cleaning
Cleaning
Cleaning
Cleaning with blower brush; if
necessary, using lint-free
paper. For No. 5 mirror, use
mirror cleaning tool
Dispose of toner collecting on
roller electrode
Cleaning
Cleaning
Remarks
Cleaning
Cleaning