Ricoh Pro C901 Technical Bulletin page 328

Reissued: 28th-Sep-12
Model:
AG-P1/C1, AGL-P1/C1, Aries-P1.5/C1.5
RTB Reissue
The items in bold italics were corrected or added.
Subject:
Notes on Handling PCDUs to prevent drum scratching
From:
PPBG Service Planning Dept.
Classification: Troubleshooting
Mechanical
Paper path
Product Safety
This RTB has been issued to announce the correct handling procedure of the PCDU* to
prevent scratches on the drum, which occurs when the PG* is narrower at the front side of
the drum.
* PCDU includes the photoconductive drums and the development units.
NOTE
* PG is the gap between the drum and the development rollers
1. Primary Considerations When Handling the PCDU
Take note of the information in the following section to avoid the problems listed
below.
1) Different density between left and right sides on a page
2) Toner adhesion to the development rollers
3) Scratches on the drums resulting from toner adhesion to the development rollers
4) Toner clumps caused by narrowed PG
1-1. Confirming Attachment of the Inner Cover
The Inner Cover must always be fastened with the 3 screws circled in blue in the photo
below when in operation. Note that these screws not only function to hold the cover but
fix the PCDU to the mainframe.
echnical
T B
Part information
Electrical
Transmit/receive
Other (
Confirm complete fastening of the 3 screws.
Never operate the machine without
the Inner Cover or the screws.
The development unit will be positioned
incorrectly when operated without the Inner
Cover and the screws, causing scratches on
the drum surface and uneven image density.
ulletin
Date:
06-Dec-10
Prepared by:
H. Kawamura
Action required
Service manual revision
Retrofit information
) Tier 2
PAGE: 1/6
No.:
RG178128c