Citizen CL-S400DT - Chapter 2: Printer Operation; Power Management and Controls

Chapter 2 Operating Principles
2-1. Operation of Each Mechanism
2-5 CL-S400DT
Part name Description
SA Power Supply Converts AC to DC24 V and feeds it to the “SA Main PCB”.
SA LCD PCB Consists of LCD, LED and switches for operation.
2-1-2. Media Feed Mechanism
The major components of the media feed mechanism are:
(a) Unit, Motor
(b) SA2 Platen
(c) Gear Train (Gear Reduction 1, Gear Reduction 2, Gear Idle)
By closing the cover, media is pushed against the “SA2 Platen”.
As the “Unit, Motor” (stepping motor) turns counterclockwise viewing from the right side of the
printer, the “SA2 Platen” turns counterclockwise via the gear train (“Gear Reduction 1”, Gear
Reduction 2” and “Gear Idle”) and media is fed forward by the friction force produced between the
“SA2 Platen” and the “SA2 Head”.
When the “Unit, Motor” turns clockwise, media is fed backwards.
One step of the “Unit, Motor” feeds media by 1/16 mm (0.0025").
1
2
3
4
5
Gear Reduction 1
Gear Reduction 2
Gear Idle
SA2 Platen
Unit, Motor
SA2 Head
Media
Thermal elements