Ricoh C211 Service Manual page 333

No. Item
4. Drum Connector
5. Ink Detection Board
6. Drum Shaft
7. Exit Pawl Air Pump
Main Board and
8. Image Processing
Board
9. Thermal Head Drive
Paper Table Drive
12.
Motor
13. Air Knife Motor
Pressure Plate
14.
Position Sensors
SM
To ensure the proper drum connection, a drum lock lever
has been added inside the front door. To remove the
drum from the machine, the drum release lever must be
moved upward to disconnect the drum connector. (Same
as the VT3600)
The location of the ink detection board has been changed
from the upper side to the right side of the drum shaft. The
ink type switch (SW901), which was not used (always set
at oil type), has been removed. (Same as the VT3600.)
To supply ink to the ink roller evenly, the second ink
supply hole (count from the front side) of the drum shaft
was covered with a strip of tape.
(Same as the VT3600.)
To ensure proper paper separation from the drum, the exit
pawl air pump system was standardized. (Same as
VT3600.) The pump system can optionally be installed in
the models of the VT2000 series.)
The main board and the image processing board have
been combined into one board.
The thermal head drive board has been removed. The
function of the board has been moved to the main board.
The thermal head voltage is applied directly from the
power supply unit. The main board applies the signal to
the PSU to supply thermal head voltage only during the
master making process. (Same as the VT3600.)
The paper table drive motor has been changed from an ac
motor to a dc motor.
The air knife motor has been changed from an ac motor to
a dc motor.
The pressure plate position switch and the full master
detecting switch have been eliminated.
Three photo-interrupters, the upper and lower pressure
plate sensors and the full master box sensor are used.
(Same as the VT3600)
1-5
Remarks
C224