Electrical - Star Micronics LS-5 SERIES Technical Manual

THEORY OF OPERATION

3-5. Electrical

[1] LVPS Assembly (LVPS: Low Voltage Power Supply):
Not only supplies AC power to the heater rod but produces and supplies stable DC power with low voltage to be used
in the logic circuit, etc.
It includes an interlock switch and a main power switch, the former being a safety switch to make or break the circuits
for AC power and DC power with a low voltage of 24 V from other than the fan power supply by depressing and
releasing the switch of the front cover assembly and the latter being the main power switch for turning ON and OFF
the power.
[2] HVPS (high voltage power supply):
Supplies voltage and current to the BCR, BTR and magnetic roll for charging, developing and transfer.
[3] MCU PCB (Main Control Unit):
Controls the whole printing operations based on information from the sensors and communication with the main logic
board.
Its main functions are as follows:
• Communication with the main logic board;
• Reception of information from the sensors and switches;
• Control of the ROS, fuser and drive assemblies;
• Control of the printing sequence;
• Distribution of low-voltage DC power from the LVPS assembly to each component.
[4] Fan:
Exhausts the system, thereby preventing internal temperature from increasing.
Figure 2-11 Electrical
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