Citizen CL-S6621 - Part Names and Functions: Rear View

CL-S6621 2-2
CHAPTER 2 OPERATING PRINCIPLES
TABLE OF CONTENTS
2-1. Operation of Each Mechanism ....................................................................................... 2-4
2-1-1. Locations and Functions of Motors, Sensors and Thermal Head ...................... 2-4
(1) “Unit, Ribbon” section ................................................................................ 2-4
(2) Printing section .......................................................................................... 2-5
2-1-2. Media Feed Mechanism..................................................................................... 2-6
2-1-3. Label/Tag Detection Mechanism ........................................................................ 2-7
2-1-4. Printing and Ribbon Feed Mechanism ............................................................... 2-10
2-1-5. Print Head Up/Down Detection Mechanism....................................................... 2-13
2-1-6. Paper Near End Detection Mechanism.............................................................. 2-14
2-1-7. Head Balance Adjustment Mechanism .............................................................. 2-15
2-1-8. Media Offset Adjustment Mechanism................................................................. 2-16
2-1-9. Transparent/Reflective Sensor Travelling Mechanism ....................................... 2-17
2-2. Operation of Control Parts .............................................................................................. 2-18
2-2-1. Configuration of Printer ...................................................................................... 2-18
(1) AC power supply ....................................................................................... 2-19
(2) SA, Main PCB............................................................................................ 2-19
(3) Operation panel (SA, Opepane PCB)........................................................ 2-20
(4) Thermal print head (SA, Head).................................................................. 2-20
(5) Sensors ..................................................................................................... 2-20
(6) Motors........................................................................................................ 2-20
(7) SA, Ribbon PCB ........................................................................................ 2-20
(8) SA, Relay PCB .......................................................................................... 2-21
(9) Optional I/F ................................................................................................ 2-21
2-2-2. Memory map ...................................................................................................... 2-22
2-2-3. Sensors .............................................................................................................. 2-23
(1) Head up switch .......................................................................................... 2-23
(2) Transparent sensor and reflective sensor ................................................. 2-24
(3) Ribbon Sensor F/R .................................................................................... 2-26
(4) Head temperature sensor.......................................................................... 2-27
(5) PF motor temperature sensor.................................................................... 2-28
(6) Ribbon motor temperature sensor............................................................. 2-29
(7) Paper Near End sensor ............................................................................. 2-30
2-2-4. Drivers................................................................................................................ 2-31
(1) PF motor driver.......................................................................................... 2-31
(2) Ribbon motor driver ................................................................................... 2-32
(3) Head driver ................................................................................................ 2-33
(4) Buzzer driver ............................................................................................. 2-35
(5) Fan driver .................................................................................................. 2-35
2-2-5. Other circuits ...................................................................................................... 2-36
(1) Power supply circuit................................................................................... 2-36
(2) Reset circuit............................................................................................... 2-37
(3) Clock circuit ............................................................................................... 2-37