Citizen CL-E720DT Technical Manual page 76

Chapter 3 Disassembly and Maintenance
CHAPTER 3 DISASSEMBLY AND MAINTENANCE
3-1. Maintenance Precautions ............................................................................................... 3-4
3-2. Cleaning.......................................................................................................................... 3-5
3-3. Lubrication ...................................................................................................................... 3-5
3-3-1. Lubrication frequency......................................................................................... 3-5
3-3-2. Types of lubricant ............................................................................................... 3-5
3-3-3. Quantity of lubricant ........................................................................................... 3-5
3-4. Maintenance Tools List ................................................................................................... 3-6
3-5. Quick Detachment of Major Parts ................................................................................... 3-7
3-5-1. SA Head ............................................................................................................. 3-7
3-5-2. SA Platen ........................................................................................................... 3-8
3-6. Disassembly, Reassembly and Lubrication .................................................................... 3-9
3-6-1. "SA Top Cover" Block ......................................................................................... 3-10
(1) "SA Top Cover" Block ................................................................................ 3-10
(2) SA Top Cover............................................................................................. 3-10
3-6-2. Cover PF Motor.................................................................................................. 3-11
3-6-3. SA Opepane PCB .............................................................................................. 3-12
(1) Unit Opepane ............................................................................................ 3-12
(2) SA Opepane PCB...................................................................................... 3-12
3-6-4. Case................................................................................................................... 3-13
3-6-5. "SA Main PCB" and "SA Relay PCB" ................................................................. 3-14
(1) "SA Main PCB" Connectors ....................................................................... 3-14
(2) "SA Main PCB" and "SA Relay PCB"......................................................... 3-14
3-6-6. Unit Mechanism ................................................................................................. 3-16
3-6-7. "Unit Power Supply" and "Paper Holder" Block .................................................. 3-17
(1) "Unit Power Supply" Block and "Paper Holder" Block ............................... 3-17
(2) Unit Power Supply ..................................................................................... 3-18
(3) Plate Holder Paper L ................................................................................. 3-18
3-6-8. "SA Power SW Cable" and "Frame Bottom" ...................................................... 3-19
3-6-9. SA Platen ........................................................................................................... 3-20
3-6-10. "SA Head Up Sensor PCB", "SA TRA Sen PCB", "FFC TRA Sensor" and
"Leaf Adjust Sensor U"....................................................................................... 3-21
(1) "Unit Sensor U" and "SA Head Up Sensor PCB"....................................... 3-21
(2) SA TRA Sen PCB...................................................................................... 3-22
(3) "FFC TRA Sensor" and "Leaf Adjust Sensor U" ........................................ 3-23
3-6-11. "Unit Head" and "Unit PF" .................................................................................. 3-26
3-6-12. "SA Head", "Cam Head Adjust" and "Cam Head Balance"................................. 3-28
(1) "SA Head" Block ........................................................................................ 3-28
(2) "SA Head" and "Cam Head Adjust"............................................................ 3-30
(3) Cam Head Balance ................................................................................... 3-32
3-6-13. SA PF Motor....................................................................................................... 3-33
3-6-14. "SA Ref Sensor PCB" and "Spring Adjust Sensor L" .......................................... 3-34
3-6-15. Platen Drive Gears, "Lever Head Lock", Frames and "Plate Peeler" ................. 3-36
CL-E720DT
TABLE OF CONTENTS
3-2