Citizen OP900II, Technical Manual

6 

 Contents

Introduction ............................................................................................................................................................................................2

For Safe Use ...........................................................................................................................................................................................2

General Warnings...................................................................................................................................................................................5

Chapter 1

Cleaning ..................................................................................................................................................... 8

Alcohol that can be used for cleaning .................................................................................................................................................8

Cleaning the Platen Roller.....................................................................................................................................................................8

Cleaning the Grip Roller and Pinch Roller...........................................................................................................................................9

Cleaning the thermal head ..................................................................................................................................................................10

Chapter 2 Disassembly

・

Reassembly ......................................................................................................................... 11

Fasten Screw Torque List.................................................................................................................................................................... 11

Maintenance parts ................................................................................................................................................................................12

Applying Grease...................................................................................................................................................................................12

１

, Disassembly,

Assembly

(Outer cover) ....................................................................................................................................13

２

, Disassembly

・

assembly

（

Printer mechanism

）

........................................................................................................................14

Replacement Procedure 2-32 Thermal Print Head Assembly.............................................................. 15

Replacement Procedure Mecha Assy ..................................................................................................... 17

Replacement Procedure 2-29 Head Frame Assembly........................................................................... 18

Replacement Procedure 2-30 Ribbon Winding Assy ............................................................................. 19

Replacement Procedure 2-35 Main PCB Assembly .............................................................................. 19

Replacement Procedure 2-10 DRIVE PCB Assy ................................................................................... 19

Replacement Procedure 2-13 LED PCB Assy ....................................................................................... 19

Replacement Procedure 2-33 RFID PCB Assembly.............................................................................. 19

３

, Disassembly

・

Assembly

（

Frame Assy

）

....................................................................................................................................21

Replacement Procedure DAMPER ........................................................................................................ 21

Replacement Procedure 3-38 Inter Lock SW Assy................................................................................ 21

Replacement Procedure 3-40 Fan Motor ............................................................................................... 21

Replacement Procedure 3-32 Power Supply Unit................................................................................. 21

４

, Disassembly, Assembly

（

Mechanical Assy

）

.............................................................................................................................22

Replacement Procedure 4-68 Auto Cutter Unit .................................................................................... 22

Replacement Procedure 4-9 BELT_TIMING ........................................................................................ 22

Replacement Procedure 4-33 ROLLER_PLATEN ................................................................................ 22

Replacement Procedure 4-71 ROLLER_GRIP ...................................................................................... 23

Replacement Procedure 4-32 ROLLER_PINCH................................................................................... 24

Replacement Procedure 4-53 GEAR_HEAD_PINCH_IDLE................................................................ 25

Replacement Procedure 4-55 GEAR_ROLL_REDUCTION_3 ............................................................. 26

Replacement Procedure 4-57 Gear,Cassette ......................................................................................... 26

Replacement Procedure 4-56 Torque Limiter ....................................................................................... 26

Replacement Procedure 4-25 Metal Bearing

（

d6-D10

）

..................................................................... 26

Replacement Procedure 4-22 Pulley,Grip Roller................................................................................... 26

Replacement Procedure 4-63 Humidity Sensor Module....................................................................... 27

Replacement Procedure 4-64 Paper Sensor PCB.................................................................................. 27

Replacement Procedure 4-66Paper Guide Assy .................................................................................... 28

Replacement Procedure 4-65 Sensor Plate Assy................................................................................... 29

５

, Disassemble

・

Assemble

（

Mechanical frame L Assy

）

.............................................................................................................31

Replacement Procedure Assembly,DRUM_Supply_Ribbon ................................................................. 32

Replacement Procedure 5-15 GEAR_HEAD_PINCH_CAM_L ............................................................ 32

Replacement Procedure 5-16 Gear_Supply_Tension ............................................................................ 32

Replacement Procedure 5-33 SA,Holder_Ribbon_LT ........................................................................... 32

Replacement Procedure 5-32 SA,Holder_Ribbon_L ............................................................................. 32

Replacement Procedure 5-19 HeadUP_Worm_Gear............................................................................. 32

Replacement Procedure 5-24 Motor Assy.............................................................................................. 32

Replacement Procedure 5-25 Step_Motor_PM25L ............................................................................... 32

Replacement Procedure 5-20 Bearing(d6-D12)..................................................................................... 32