Ricoh Laser Unit (LSU) Cleaning & Replacement | Fix SC202, SC220, SC322 Errors
In this video, we show you the complete step-by-step process to remove, clean, and replace the Laser Scanning Unit (LSU) in Ricoh printers and copiers.
Whether you are experiencing print quality issues (faint lines), loud noises from the polygon motor, or error codes like SC202, SC220, or SC322, this guide will help you fix your machine.
✅ What You'll Learn:
• How to safely remove the Laser Unit (LSU)
• How to clean the Polygon Mirror and lenses (Blurry print fix)
• Fixing SC202 (Polygon Motor On Timeout Error)
• Fixing SC220 (Laser Synchronization Error)
• Fixing SC322 (Laser Synchronization Error)
• Proper re-installation and cable connection
📌 Applicable Models:
Ricoh MP C2003, MP C2503, MP C3003, MP C3503, MP C4503, MP C5503, MP C6003
Ricoh MP 2554, MP 3054, MP 3554, MP 4054, MP 5054, MP 6054
Ricoh MP 301, MP 2510, MP 3010, MP 4055, MP 5055
Ricoh Aficio SP Series, IM Series & More
⏱️ Timestamps:
00:00 - Introduction & Error Codes (SC202, SC220)
00:30 - Safety precautions (Laser Warning)
01:00 - Disassembling covers to access LSU
03:00 - Removing the Laser Unit
04:30 - Cleaning the Polygon Mirror & Lenses
06:00 - Re-installing the unit
07:00 - Testing & Print Quality Check
🛠️ Tools Required:
• Screwdriver set (Phlips #2)
• Soft lint-free cleaning cloth
• Cotton swabs (for lenses)
• Air blower
⚠️ Important: Never touch the polygon mirror or lenses with your bare fingers. The oils from your skin can cause print quality defects. Always handle the Laser Unit carefully.
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