MP C Gen 3
MP C3003 / C3503 / C4503 / C5503 / C6003
SOP or classic (by option) · GW controller · 30–60 ppm color
Field notes for this family — not a scanned FSM. Confirm the serial in the book before you order a part.
Covers
- MP C3003
- MP C3503
- MP C4503
- MP C5503
- MP C6003
Field notes
- Gen 3 color. Same 541–547 fusing family. Polygon / laser 201–220 still apply.
- Older SOP firmware is picky — a panel swap may need a firmware match.
- NVRAM is SP5-824 / 5-825. SMC print is SP5-990-001. Confirm the FSM for this serial.
PM interval
PCU ~60k, fuser ~120k
Key SP numbers
- SP5-810-001SC reset
- SP3-011Process control
- SP5-990SC history
Unit locations
Fusing unit
Right door
Laser optics
Above PCUs, under a cover — do not open the polygon
Hot codes on this family
Start here on a call
Enter SP mode
SOP / IM C: Reset → 806182 → hold C. Then 5812# (phone on counter), 5810# (SC reset), 5990# (print SMC).
SC reset (SP5-810)
Clear a latched Level A/B service call after the repair is actually done.
Read SC history
The standing SC is rarely the whole story. History tells you what led up to it.
Forced process control
Run MUSIC / process control after PCU, developer, ITB, or ID sensor work.
Developer initialization
Init TD sensor / developer after a PCU or developer swap. Skipping this is a textbook SC325.