User Guide

212 Chapter 5 - Theory of operation EN
Power supply
A universal power supply is activated when the printer’s power switch
is turned on. The printer’s paper handling controller sends a power-on
signal to the power supply through the controller PCA.
The power supply provides +26 V (volts) for motors and +5 V for
sensors and controller electronics. The power supply is also activated
when the controller PCA is set to service mode.
Power-on sequence
During the power-on sequence, an internal self-test is performed. All
motors, electronics, and main assemblies are tested.
After successful power-on sequence, the user LED is lit green.
If the power-on sequence is NOT successful, a jam condition or a
hardware malfunction is indicated through the printer control panel
and the user LED is lit amber.
C-link communication
Communication and control of the C-link devices is accomplished
through the paper-handling controller embedded on the formatter
PCA (printed circuit assembly) in the printer. The C-link devices have
their own power supplies and controller boards that receive signals
and commands from the paper-handling controller.
Figure 72. C-link cabling