Citizen CLP-621 - Page 74

CHAPTER 3 DISASSEMBLY AND MAINTENANCE
TABLE OF CONTENTS
3-1. Maintenance Precautions ...............................................................................................3-4
3-2. Cleaning..........................................................................................................................3-5
3-3. Lubrication ......................................................................................................................3-5
3-4. Maintenance Tools List ...................................................................................................3-6
3-5. Disassembly, Reassembly and Lubrication ....................................................................3-7
3-5-1. Top Cover SA .....................................................................................................3-7
3-5-2. Case U................................................................................................................3-8
(1) Removing the Case U without detaching the Ribbon Unit (Normal way)...3-8
(2) Removing the Case U after detaching the Ribbon Unit .............................3-10
3-5-3. Fan/Dir. SW SA ..................................................................................................3-11
3-5-4. Ribbon Gears .....................................................................................................3-12
3-5-5. Ribbon Motor F/R SA and Ribbon Main PCB SA ...............................................3-13
3-5-6. Ribbon Holder Catch and Ribbon Unit Knob ......................................................3-14
3-5-7. Ribbon Sensor F/R Unit and Ribbon Unit Base Plate SA1.................................3-15
3-5-8. Ribbon Tension Shaft F SA and Tension Sensor SA ..........................................3-16
3-5-9. Ribbon Tension Shaft R SA and Tension Sensor SA..........................................3-17
3-5-10. Main PCB Block, Power Supply Unit and Control Panel Unit .............................3-19
3-5-11. Main PCB Unit and Centro PCB Unit..................................................................3-21
3-5-12. Ope-Pane PCB SA .............................................................................................3-21
3-5-13. Mechanism Unit and Case L ..............................................................................3-22
3-5-14. Platen SA............................................................................................................3-23
3-5-15. Sensor U Unit .....................................................................................................3-24
3-5-16. Head Up Sensor PCB SA, Transparent Sensor PCB SA and Transparent Sensor
Cable SA ............................................................................................................3-25
(1) Head Up Sensor PCB SA and Transparent Sensor PCB SA.....................3-25
(2) Transparent Sensor Cable SA ...................................................................3-26
3-5-17. Head Block and PF Unit .....................................................................................3-28
3-5-18. Head SA .............................................................................................................3-30
(1) Head Unit...................................................................................................3-30
(2) Head SA ....................................................................................................3-32
3-5-19. Head Adjust Cam and Head Balance Cam.........................................................3-34
3-5-20. Motor SA.............................................................................................................3-35
3-5-21. Reflective Sensor PCB SA .................................................................................3-35
3-5-22. Gears..................................................................................................................3-37
3-5-23. Head Lock Lever and Main Plate R SA ..............................................................3-38
3-5-24. Main Frame, Main Plate L SA and Plate Peeler SA............................................3-39
3-6. Adjustments ....................................................................................................................3-40
3-6-1. Transparent/Reflective Sensor Position Adjustment...........................................3-40
(1) Sensor position adjustment (factory mode) ...............................................3-40
CLP-621 & CLP-631 3-2