NEC Super Script 4400, Maintenance Manual

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200 SuperScript 4400 — Maintenance Guide
7.7.3 Back-Up Roller
Tools
Phillips Screwdriver #1, #2
Disassembly Procedures : See the layout of fuser unit parts.
1. Remove the fusing heater lamp (300W).(See the item 7.7.1.)
2. Remove the set screw ST3X6 (2 pcs.) of oil pan.
3. Remove the oil pan.
4. Remove the set screw ST3X6 (2 pcs.) of F. cover 'B'.
5. Remove the F. cover 'B'.
6. Remove the set screw F4X6 (2 pcs.) of low guide.
7. Remove the low guide.
8. Remove the set screw ST3X6 (2 pcs.) of frame assembly.
9. Open the upper face of frame assembly.
10. Remove the back-up roller from the frame.
Assembly Procedures
1. Install a new back-up roller to the frame.
2. After the above, follow exactly the reverse order of disassembling procedures.
Caution!
Do not let any foreign particle such as debris adhere to the surface of back-up roller.
Frame (L)
B.B
Back-up Roller
Frame (R)
B.B
Gear