Ricoh FT5535 Service Manual page 455

Tech Service Bulletin No. 4027/4527/5035/5535/4022/4522 - 025
Page 2 of 3
CAUSE 2:
When the Jogger Motor is operating, if there is a
drop in voltage of 5V, the ISP may malfunction, and
as a result, two phases of the motor will continue to
be supplied with power.
CAUSE 3:
Transfer Bias is applied to the Transfer Belt during stand-by.
SOLUTION 1:
The software will be modified so that a signal processing function is inserted prior to the signal r eceipt that is
activated when the ADS Density signal is sent. As a result, the abnormal signal route will be chang ed in the
following manner:
Pre-start signal sent - signal received - ADS Density signal sent.
Pre-start signal processed - signal received - ADS Density signal processed.
SOLUTION 2:
The software will be modified so that the power to the Jogger Motor will automatically shut "OFF" if any of
the phases of the motor run continuously for 3 minutes or longer. If this problem has occurred, the portion of
the Duplex Tray that contacts the Jogger Motor most likely has become deformed due to excessive heat
generated by the Jogger Motor. If this has occurred, replace the entire Duplex Tray when installing the new
ROM.
NOTE: Contact your Regional TSM for warranty information regarding the replacement of the Duplex Unit
if this problem occurs.
SOLUTION 3:
The software will be modified so that the Transfer Bias shuts "OFF" when the Main Motor stops.
OLD NEW
PART PART
NUMBER NUMBER
A1535107 A1535109
UNITS AFFECTED:
All FT4027/4527/5035/5535/4022/4522 copiers manufactured after Serial Number
A3636870152/A3716810214/A3626060001/A3696060001/A3646870176/A3726870076 respectively will
have the updated software installed during production.
ORDERING PROCEDURE:
This software may be downloaded from the Ricoh Technical Services BBS or by completing and faxing th e
attached form.
NOTE: For more information about the Ricoh Technical Services BBS, order the Guide To Operation
(BBS00001) through normal NSPC channels or download document #1001, #1002 & #1003 from
the CSG Information Retrieval System at (201) 808-3590.
DESCRIPTION
ROM (IC - 4M X 16 -
120NS)
Main Board
PSU CPU
FT5535/5035
QUANTITY
PAGE ITEM
1 1 69
ISP
DRIVER
M
REFERENCE
MODEL
FT4027/4527 FT4522/4022
PAGE ITEM PAGE
4 69 4 69
Continued...
24V
ITEM
4