Ricoh B051 Service Manual page 1042

BULLETIN NUMBER:
APPLICABLE MODEL:
GESTETNER – DSC224/DSC232
LANIER – LD024C/LD032C
RICOH – AFICIO 1224C/1232C
SAVIN – C2408/C3210
SUBJECT: DEVELOPMENT UNITS & PCU UPDATES
SYMPTOMS:
Image density becomes lighter across the image, beginning from the leading edge and both sides. This
phenomenon is visible in solid image and halftone areas, and occurs more easily with:
1. B/W image areas
2. Originals with low image coverage ratios
3. Jobs with a low quantity of sets (e.g. 1 or 2 pages per job)
CAUSE:
The lubricant applied to the OPC belt gets inside the black development unit via the development roller,
causing the friction level on the roller surface to decrease. This makes it more difficult for the toner to be
transferred onto the roller surface, causing the image to gradually get lighter.
NOTE: The symptom temporarily subsides when the toner cartridge is replaced and a new toner is
supplied to the hopper (concentration of lubricant in the unit is minimized). However, it will recur
when the above process repeats.
SOLUTIONS:
Firmware update: The firmware has been applied to November 2003 production. Update the
firmware to controller version 2.02.9 or later and BiCU version 1.275:01 or later (Service Card
version 1.11 or later). The latest controller firmware is version 2.05.1 and BiCU firmware version
1.291: 01 as of October 2003.
Development Unit modified in August 2003. New style development units can be identified by a blue
seal on the left hand side of the development unit. Replace the Development Unit and toner.
Along with the firmware update and black development unit replacement below (See UNITS
AFFECTED below), it is necessary to input new SP values.
UNITS AFFECTED:
All B051/B052 copiers manufactured after the serial numbers listed below will have the new style firmware
installed during production.
Copyright  2004 RICOH Corporation. All rights reserved.
CÓPIA NÃO CONTROLADA
TECHNICAL SERVICE BULLETIN
This bulletin supercedes TSB B051/B052 – 021 Reissue
SUBJECT - FAINT BLACK IMAGE
B051/B052 – 030 REISSUE
MODEL NAME
Gestetner DSC232
Lanier LD032C
Ricoh Aficio 1232C
Savin C3210
Gestetner DSC224
Lanier LD024C
Ricoh Aficio 1224C
Savin C2408
CÓPIA NÃO CONTROLADA
SERIAL NUMBER
J2637100001
J2537100001
02/13/2004
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