Utax CD 1020 User Manual

1-1-4
2AV/X
1-7 Requirements on PCB Replacement
1-7-1 Replacing the main PCB ...................................................................................................................... 1-7-1
1-7-2 Upgrading the firmware on the main PCB ............................................................................................ 1-7-3
1-7-3 Upgrading the firmware on the operation unit PCB (20 cpm copier only) ............................................ 1-7-5
1-7-4 Adjustment-free variable resistors (VR) ............................................................................................... 1-7-6
2-1 Mechanical construction
2-1-1 Paper feed section ............................................................................................................................... 2-1-1
2-1-2 Main charging section .......................................................................................................................... 2-1-4
2-1-3 Optical section ...................................................................................................................................... 2-1-6
(1) Original scanning ............................................................................................................................ 2-1-7
(2) Image printing ................................................................................................................................. 2-1-8
2-1-4 Developing section ............................................................................................................................. 2-1-10
(1) Formation of magnetic brush ........................................................................................................ 2-1-11
(2) Toner density detection by the toner sensor ................................................................................ 2-1-12
(3) Toner density control .................................................................................................................... 2-1-12
(4) Correcting the toner sensor control voltage .................................................................................. 2-1-13
(5) Correcting toner output voltage .................................................................................................... 2-1-14
2-1-5 Transfer and separation section ......................................................................................................... 2-1-15
2-1-6 Cleaning section ................................................................................................................................. 2-1-17
2-1-7 Charge erasing section ...................................................................................................................... 2-1-18
2-1-8 Fixing section ..................................................................................................................................... 2-1-19
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout ........................................................................................................................... 2-2-1
(1) PCBs .............................................................................................................................................. 2-2-1
(2) Switches and sensors ..................................................................................................................... 2-2-2
(3) Motors ............................................................................................................................................. 2-2-4
(4) Other electrical components ........................................................................................................... 2-2-5
2-3 Operation of the PCBs
2-3-1 Power source PCB ............................................................................................................................... 2-3-1
2-3-2 Main PCB ............................................................................................................................................. 2-3-4
2-3-3 CCD PCB ........................................................................................................................................... 2-3-14
2-3-4 Laser diode PCB ................................................................................................................................ 2-3-15
2-4 Appendixes
Timing chart No. 1 .......................................................................................................................................... 2-4-1
Timing chart No. 2 .......................................................................................................................................... 2-4-2
Timing chart No. 3 .......................................................................................................................................... 2-4-3
Timing chart No. 4 .......................................................................................................................................... 2-4-4
Timing chart No. 5 .......................................................................................................................................... 2-4-5
Timing chart No. 6 .......................................................................................................................................... 2-4-6
Timing chart No. 7 .......................................................................................................................................... 2-4-7
Timing chart No. 8 .......................................................................................................................................... 2-4-8
Timing chart No. 9 .......................................................................................................................................... 2-4-9
Timing chart No. 10 ...................................................................................................................................... 2-4-10
Maintenance parts list................................................................................................................................... 2-4-11
Periodic maintenance procedures ................................................................................................................ 2-4-12
General connection diagram (1) ................................................................................................................... 2-4-15
General connection diagram (2) ................................................................................................................... 2-4-16

Utax CD 1020 Specifications

General

Brand	Utax
Model	CD 1020
Category	Copier
Language	English