LASER CLASS 730i/720i/710 Chapter 4: Maintenance and Service
4-2
Level Location When
Service Fixing entrance guide When marks, marks on back of recording paper,
technician irregular/smudged black vertical line, paper jam,
or wrinkles in copied or received images.
Fixing film When marks at intervals of 75 mm or poor fixing
in printed-out.
Fixing pressure roller When marks on back of recording paper at
intervals of 66 mm , poor fixing, paper jam, or
wrinkles in printed-out.
1.3 Periodic Inspection
None
1.4 Periodic Replacement Parts
Parts name Parts No. Life
Separation Roller (Upper) HB1-5284 50,000 sheets
Separation Roller (Lower) HB1-5298 50,000 sheets
1.5 Adjustment Items
Checking the Nip Width of the Pressure Roller
1.6 General Tools
Tool Use
Phillips screwdriver Removing/inserting screws
Flat bladed screwdriver Removing/inserting screws
Precision Phillips screwdriver Removing/inserting screws
Precision flat bladed screwdriver Removing plastic tabs
Tweezers Removing/inserting coil springs
Pliers, needle nose Driving retaining ring
Lint-free paper Clean transfer charging roller, fixing film
Isopropyl alcohol Clean fixing film, fixing entrance guide, fixing pressure
roller, fixing eject roller, fixing eject guide, static charge
eliminator, etc.
1.7 Special Tools
Tool Use Part No.
Grease (MOLYKOTE EM-50L) Apply to specified parts HY9-0007
Grease (IF-20) Apply to specified parts CK-8006
IC-Removing Tool (24-64 pin) Remove the main ROM HY9-0022
on the SCNT board
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