The Main PCA
The Main PCA is located on the left-hand side of the printer. This board is the brain of the printer:
where all the processing and printer management occurs; control of the overall machine (digital and
mechatronics) with the battery for the Real-Time Clock.
There are two versions depending on memory size: Basic (256 MB) for the T120 and Pro (1 GB) for the
T520.
The Main PCA also contains other elements with the following functions:
●
Battery: To maintain the internal clock up and running. The internal clock is used to remember the
actual date, used for cartridge life counting and warranty accounting.
●
WiFi module: Attached to the top of the board with some plastic locators, provides WiFi
functionality to the printer.
●
USB dongle: Where the firmware of the printer is stored.
NOTE: This dongle does not operate as a standard USB drive. It is a customized device
designed to interact with the main electronics, and all the data are appropriately encrypted.
●
Buzzer: To provide acoustic signals to the user.
30 Chapter 1 Printer fundamentals ENWW
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