Ricoh G165 Service Manual page 214

Machine Overview
No. Parts Name
1 EGB (Engine Board)
Controller Board
2
(printer model)
Temperature/Humidity
3
Sensor
High Voltage Power
4
Supply Board
5 Operation Panel Board
6 ID Chip Board
G165/G166/G167/G181/G183/G184
This board controls all of the machine, input/output, drivers
and input/output connections and the handshake with the
Controller.
This board controls the memory, all applications and all
peripheral devices.
This sensor detects the relative temperature and humidity
around the machine.
This board supplies the charge to the image transfer roller
and high voltage for the charge roller, transfer roller and
the development roller.
This board controls the operation of the operation panel
keys and LEDs.
This board relays the ID chip data of each AIO from/to the
EGB.
6-6
Description
SM