Ricoh C226 Service Manual page 277

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
C226
To ensure 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 pulled up to
disconnect the drum connector. (Same as the C216
model.)
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 C216 model.)
To supply ink to the ink roller evenly, the second ink supply
hole (count from the front side) of the drum shaft is
covered with a strip of tape.
(Same as the C216 model.)
To ensure paper separation from the drum, the exit pawl
air pump system is standardized. (Same as the C216
model.) (The pump system can optionally be installed in
models of the C211 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 directly applied 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 C216 model.)
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, upper and lower pressure plate
sensors and full master box sensor are used instead.
8-6
DIFFERENCES BETWEEN MODELS
Remarks
SM