Ricoh Taurus-C1a - RTB 130: Stained background;Toner spots

Technical Bulletin PAGE: 1/2
Model: Taurus-C1a/C1b
Date: 20-Apr-15
No.: RD074130
Subject: Stained background/Toner spots
Prepared by: N.Yoshida
From: 1st Tech Service Sect., PP Tech Service Dept.
Classification:
Troubleshooting
Mechanical
Paper path
Part information
Electrical
Transmit/receive
Action required
Service manual revision
Retrofit information
Product Safety
Other ( )
Tier 2
SYMPTOM
Background is stained or is spotted with toner when continuously printing low coverage
and low P/J jobs.
CAUSE
Developer deterioration; developer mixture in the development unit cannot be refreshed
because the machine continues to run low coverage (approximately lower than 3%) and
low P/J jobs.
SOLUTION
1. Clean the ITB cleaning unit, guide plates of the PTR unit, and development unit.
2. Confirm proper attachment of the development entrance seal (p/n: D0743330) and the
side seals (p/n: D0743343, D0743344). If any of the seals are peeled off, replace with
new seals. See RTB #RD074063 for how to replace the seals.
Toner spots
Stained background