Operation Of Each Mechanism; Locations And Functions Of Major Electrical Parts - Citizen CL-E720DT Technical Manual

Chapter 2 Operating Principles
2-1.

Operation of Each Mechanism

2-1. Operation of Each Mechanism
This printer is comprised of the following mechanisms:
media feed/printing, label/tag detection, print head up/down detection, head balance adjustment
and media thickness adjustment.
This section describes the operation of each of these mechanisms.

2-1-1. Locations and Functions of Major Electrical Parts

The following shows the locations and functions of major electrical parts.
Part name
SA PF Motor
SA Head
SA Head Up Sensor PCB
(Head Up Sensor)
SA TRA Sen PCB
(Transparent Sensor)
SA Ref Sensor PCB
(Reflective Sensor)
SA Main PCB
SA Relay PCB
SA Opepane PCB
Unit Power Supply
SA TRA Sen PCB
(Transparent Sensor)
SA Head Up Sensor PCB
(Head Up Sensor)
SA PF Motor
SA Opepane PCB
CL-E720DT
This motor feeds media. A thermistor is attached to the motor to
detect the motor temperature.
It consists of a head driver and thermal elements. The thermal
elements are heated to make printing on media. The thermal
head incorporates a thermistor to detect the thermal head
temperature.
This sensor is a photointerrupter to detect the print head
position; up or down.
This sensor is a photo sensor to detect a label stuck on liner or
U-shaped notches on tag. It also detects the media end.
This sensor is a photo sensor to detect a black mark on tag. It
also detects the media end
It controls entire printer system.
It is a relay PCB located between the "SA Main PCB" and the
"Unit Mechanism". The optional auto cutter unit or the peeler unit
is connected to this PCB.
It consists of LCD, LED and switches for operation.
It converts AC input to DC24 V.
SA Main PCB
SA Head
Unit Power Supply
Description
SA Ref Sensor PCB
(Reflective Sensor)
2-4
Relay PCB