Ricoh C211 Service Manual page 662

BULLETIN NUMBER:
APPLICABLE MODEL: VT2105
SUBJECT: PARTS CATALOG UPDATES
GENERAL:
Retain this information with all VT2105 Parts Catalog documentation until a new micropublications pa ckage
with these revisions is distributed.
• •
UPDATE NO. 1 -
Old spring clutch
has been removed
New clutch stopper
NOTE: The part number of the ROM and Main PCB for the VT2105 has been changed. The Main PCB has
not been changed except for the ROM. The old and new PCB's are interchangeable.
OLD PART NO. NEW PART NO.
C2168122 C2168123
C2168112 C2168113
C2158045 C2158057
INTERCHANGEABILITY CHART:
OLD and NEW parts can be used in both OLD and
0
NEW machines.
NEW parts can be used in OLD and NEW machines.
1
OLD parts CAN NOT be used in NEW machines.
Must be installed as a set on units manufactured prior to the S/N cut-in. On units manufactured aft er the S/N cut-in or
3/S
previously modified, use the new part numbers individually.
REVERSE ROLLER CLUTCH - It has been reported that a small horizontal white
Upper
reverse
New style magnetic clutch
DESCRIPTION
Main Control Board - 230V
Main Control Board - 115V
IC - Main Control Board
VT2105-001
line may appear 64mm from the leading edge of
prints. This occurs only when in photo mode and is
caused by a shock wave when the master is
clamped by the drum master clamper. To prevent
this white line, the Main PCB ROM has been
roller
changed to delay the timing of the master clamping.
As a result of the new software, the image on the
prints is moved forward approximately 2mm due to
the slow response of the current reverse roller and
master clamper mechanisms. To compensate for
the new software, the reverse roller clutch
mechanism has been changed from the
combination of a solenoid and a spring clutch to a
magnetic clutch. The parts listed on the part chart
on page 2 have been changed to accommodate the
new style clutch.
1
1
1
NEW parts CAN NOT be used in OLD machines.
2
OLD parts can be used in OLD and NEW machines.
OLD parts CAN NOT be used in NEW machines.
3
NEW parts CAN NOT be used in OLD machines.
12/14/93
REFERENCE
QTY INT PAGE
1 0 67
1 0 67
1 0 67
TABLE CONTINUED ON PAGE 2
ITEM
31
31
32
Continued...