Service Manuals, User Guides, Schematic Diagrams or docs for : Minolta Copiers EP1054 orig_man Mechanical_Electrical
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EP1054/EP1085/EP2030
MECHANICAL/
ELECTRICAL I
MINOLTA
COTNENTS
I. CROSS-SECTIONAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-l
l - l . Cross-Sectional View of 23 cpm Copier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-I
I-2. Cross-Sectional View of I8 cpm Copier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-2
l-3. Cross-Sectional View of 15 cpm Copier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-3
2. COPY PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-4
3. DRIVE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-6
4. SEQUENTIAL EXPLANATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-7
5. IMAGING UNIT *............................................................................................... M-12
5-l. Imaging Unit Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-13
5-2. Imaging Unit Toner Recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-I 4
5-3. Imaging Unit Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . M-14
6. PC DRUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-15
7. DRUM CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...*..... . . . . . . . . . . M-16 .
8. IMAGE ERASE LAMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-17
9. OPTICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-20
9-I. Exposure Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . M-21
9-2. AE Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-22
9-3. Lamp Reflectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-23
9-4. Aperture Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . M-23
9-5. Scanner and 2nd/3rd Mirror Carriage Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-24
9-6. 4th Mirror Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-26
9-7. Lens Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-27
IO. ORIGINAL SIZE DETECTING SENSORS (23 cpm COPIER ONLY) . . . . . . . . . . . . . . M-28
1 O-I. Original Size Detecting Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-28
1 O-2. Original Size Detecting Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-28
I O-3. Sensor Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-29
1 O-4. Size Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-30
1 O-5. Original Size Detection Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-31
I O-6. Original Cover Angle Detection (23 cpm Copier Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . M-32
11. DEVELOPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . M-33
11-l. ATDC Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-34
I I-2. Magnet Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . M-36
I l-3. Developing Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-37
I I-4. Doctor Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . M-38
1 I-5. Sleeve/Magnet Roller Lower Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._................... M-38
12. TONER HOPPER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . M-39
12-l. Toner Hopper Locking/Unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-39
12-2. Toner Replenishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-39
12-3. Shutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-40
12-4. Toner Hopper Home Position Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-40
12-5. Toner Bottle Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-41
12-6. Toner Replenishing Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-42
13. PAPER TAKE-UP/FEED SECTION (2ND DRAWER: 23 cpm
COPIER ONLY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-43
13-I .Edge Guide and Trailing Edge Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-44
13-2.Drawer Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-45
13-3.Paper Lifting Plate ................................................................................... M-45
13-4.Drawer-in-Position Detection ................................................................... M-46
13-5.Universal Tray (1 st Drawer) Paper Size Detection .................................. M-47
13-6.Paper Empty Detection ............................................................................ M-40
13-7.Paper Separating Mechanism ................................................................. M-49
13-8.Paper Take-Up Roll ................................................................................. M-50
13-9.Paper Take-Up Retry Control .................................................................. M-51
13-lO.VERTICAL PAPER TRANSPORT ......................................................... M-52
14. MULTI BYPASS TABLE .................................................................................. M-53
14-1 .Paper Take-Up Mechanism ..................................................................... M-54
14-2.Paper Take-Up Retry Control .................................................................. M-55
14-3.Paper Separating Mechanism ................................................................. M-56
14-4.Paper Empty Detection ............................................................................ M-56
15. SYNCHRONIZING ROLLERS ......................................................................... M-57
15-l .Upper Synchronizing Roller Positioning .................................................. M-58
15-2.Paper Dust Remover ............................................................................... M-58
15-3.Synchronizing Roller Control ................................................................... M-59
16. IMAGE TRANSFER AND PAPER SEPARATION ........................................... M-60
17. MAIN ERASE LAMP ........................................................................................ M-62
18. PAPER SEPARATOR FINGERS .................................................................... M-63
19. CLEANING UNIT ............................................................................................. M-64
19-l .Cleaning Bias .......................................................................................... M-65
20. PAPER TRANSPORT ..................................................................................... M-66
21. FUSING UNIT .................................................................................................. M-67
21-1. Fusing Temperature Control ................................................................... M-68
21-2.Fusing Rollers Pressure Mechanism ....................................................... M-69
21-3.Cleaning Roller ........................................................................................ M-69
22. EXIT UNIT ....................................................................................................... M-70
22-l .Upper/Lower Separator Fingers .............................................................. M-70
22-2.Paper Exit Sensor .................................................................................... M-71
23. EXIT/DUPLEX SWITCHING UNIT (OPTION) ................................................. M-72
24. DEHUMIDIFYING SWITCH (OPTION) ............................................................ M-73
25. COOLING FAN ................................................................................................ M-74
26. OPTICAL SECTION COOLING FAN ............................................................... M-75
27. MEMORY BACKUP ......................................................................................... M-76
ii
FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 MECHANICAL/ELECTRICAL
98.04.24
1174SBM0100A
1 CROSS-SECTIONAL VIEW
1174SBM0101A
1-1. Cross-Sectional View of 23 cpm Copier
2 3 4 5 6 7 8 9 10
1 11
12
13
22
21 14
20
15
23
19
18
1174M005AB
24 17 16
1. 3rd Mirror 17. Image Transfer/Paper Separator
2. 2nd Mirror Coronas
3. 1st Mirror 18. Suction Unit
4. Exposure Lamp 19. Cleaning Roller
5. Lamp Reflector 20. Upper/Lower Fusing Roller
6. Lens 21. Paper Exit Roller
7. Cleaning Blade 22. Exit/Duplex Switching Guide
8. PC Drum Charge Corona (for optional Duplex Unit and Sorter)
9. Image Erase Lamp 23. Duplex Unit Vertical Transport Roller 1
10. 4th Mirror (for optional Duplex Unit)
11. PC Drum 24. Duplex Unit Vertical Transport Roller 2
(for optional Duplex Unit)
12. Sleeve/Magnet Roller
13. Synchronizing Roller
14. Transport Roller
15. 1st/2nd Drawer Paper Take-Up Roll
16. 1st/2nd Drawer
M-1
FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 GENERAL, MECHANICAL/ELECTRICAL
98.04.24
1174SBM0102A
1-2. Cross-Sectional View of 18 cpm Copier
2 3 4 5 6 7 8 9 10
1
11
12
13
23
22
14
21
20 15
1174M004AB
19 18 17 16
1. 3rd Mirror 17. Image Transfer/Paper Separator
2. 2nd Mirror Coronas
3. 1st Mirror 18. Suction Unit
4. Exposure Lamp 19. Cleaning Roller
5. Lamp Reflector 20. Upper/Lower Fusing Roller
6. Lens 21. Paper Exit Roller
7. Cleaning Blade 22. Exit/Duplex Switching Guide
8. PC Drum Charge Corona (for optional Sorter)
9. Image Erase Lamp 23. Paper Exit Roller in Exit/Duplex
10. 4th Mirror Switching Guide Unit
11. PC Drum (for optional Sorter)
12. Sleeve/Magnet Roller
13. Synchronizing Roller
14. Transport Roller
15. Paper Take-Up Roll
16. Drawe
M-2
FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 MECHANICAL/ELECTRICAL
98.04.24
1174SBM0103A
1-3. Cross-Sectional View of 15 cpm Copier
V Except U.S.A., Canada
2 3 4 5 6 7 8 9 10
1
11
12
13
14
21
20 15
1174M011AA
19 18 17 16
1. 3rd Mirror 13. Synchronizing Roller
2. 2nd Mirror 14. Transport Roller
3. 1st Mirror 15. Paper Take-Up Roll
4. Exposure Lamp 16. Drawer
5. Lamp Reflector 17. Image Transfer/Paper Separator
6. Lens Coronas
7. Cleaning Blade 18. Suction Unit
8. PC Drum Charge Corona 19. Cleaning Roller
9. Image Erase Lamp 20. Upper/Lower Fusing Roller
10. 4th Mirror 21. Paper Exit Roller
11. PC Drum
12. Sleeve/Magnet Roller
M-3
FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 GENERAL, MECHANICAL/ELECTRICAL
98.04.24
1174SBM0200A
2 COPY PROCESS
2 3
4
10
9 1 5
MULTI BYPASS
13 12 11 8
8 7 TABLE
6
1139M002AA
1. PC DRUM 8. PAPER SEPARATION
2. DRUM CHARGING 9. CLEANING
3. IMAGE ERASE 10. MAIN ERASE
4. EXPOSURE 11. TRANSPORT
5. DEVELOPING 12. FUSING
6. PAPER FEEDING 13. PAPER EXIT
7. IMAGE TRANSFER
1. PC Drum
The PC Drum is an aluminum cylinder coated with a photosensitive semiconductor.
It is used as the medium on which a visible developed image of the original is formed.
(For more details, see "6. PC DRUM".)
2. Drum Charging
The PC Drum Charge Corona Unit is equipped with a Comb Electrode and a Scorotron
Grid to deposit a uniform negative charge across the entire surface of the PC Drum.
(For more details, see "7. DRUM CHARGING".)
3. Image Erase
Any areas of charge which are not to be developed are neutralized by lighting up LEDs.
(For more details, see "8. IMAGE ERASE LAMP".)
4. Exposure
Light from the Exposure Lamp reflected off the original is guided to the surface of the PC
Drum and reduces the level of the negative charges, thereby forming an electrostatic
latent image.
(For more details, see "9. OPTICAL SECTION".)
5. Developing
Toner positively charged in the Developer Mixing Chamber is attracted onto the electro-
static latent image changing it to a visible, developed image. A DC negative bias voltage is
applied to the Sleeve/Magnet Roller to prevent toner from being attracted onto those areas
of the PC Drum which correspond to the background areas of the original.
(For more details, see "11. DEVELOPMENT".)
M-4
FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 MECHANICAL/ELECTRICAL
98.04.24
6. Paper Feeding
Paper is fed either automatically from the 1st or 2nd Drawer, or manually via the Multi
Bypass Table or Manual Bypass Table. Each Drawer has fingers that function to separate
the top sheet of paper from the rest at take-up. (2nd Drawer: 23 cpm Copier Only)
(For more details, see "13. PAPER TAKE-UP/FEED SECTION".)
7. Image Transfer
The single-wire Image Transfer Corona Unit applies a DC negative corona emission to the
underside of the paper, thereby attracting toner onto the surface of the paper.
(For more details, see "16. IMAGE TRANSFER AND PAPER SEPARATION".)
8. Paper Separation
The single-wire Paper Separator Corona Unit applies an AC corona emission to the
underside of the paper to neutralize the paper. In addition, mechanical paper separation is
provided by the two PC Drum Paper Separator Fingers fitted to the Imaging Unit.
(For more details, see "16. IMAGE TRANSFER AND PAPER SEPARATION".)
9. Cleaning
Residual toner on the surface of the PC Drum is scraped off by the Cleaning Blade.
(For more details, see "19. CLEANING UNIT".)
10. Main Erase
Light from the Main Erase Lamp neutralizes any surface potential remaining on the sur-
face of the PC Drum after cleaning.
(For more details, see "17. MAIN ERASE LAMP".)
11. Transport
The paper is fed to the Fusing Unit by the Suction Belts.
(For more details, see "20. PAPER TRANSPORT".)
12. Fusing
The developed image is permanently fused to the paper by a combination of heat and
pressure applied by the Upper and Lower Fusing Rollers.
(For more details, see "21. FUSING UNIT".)
13. Paper Exit
After the fusing process the paper is fed out by the Paper Exit Roller onto the Copy Tray.
(For more details, see "22. EXIT UNIT".)
M-5
FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 GENERAL, MECHANICAL/ELECTRICAL
98.04.24
1174SBM0300A
3 DRIVE SYSTEM
This copier is equipped with two main drive motors, the PC Drive Motor that drives the
upper half of the copier (Imaging Unit) and the Main Drive Motor which gives drive for the
lower half of the copier (paper take-up/feeding, transport mechanism and Fusing Unit).
Each has its own drive transmitting gears and timing belts as illustrated below.
Drive Train for Lower Half of Copier Coupled to Exit/Duplex
Switching Unit
Paper Exit Roller Drive
Suction Unit
Drive
Upper Fusing
Roller Drive
Main Drive Motor M2
Synchronizing Roller Clutch CL 1
1151M001YB
Coupled to Paper Paper Transport
Take-Up Unit Clutch CL 2 Drive Train for Upper
Half of Copier
PC Drum Drive
Imaging Unit
Drive Train for Drive
Paper Take-Up Unit 1139M005AA
<23 cpm Copier>
Coupled to Copier Gear PC Drive Motor M1
<15/18 cpm Copier>
Coupled to Copier Gear
1st Vertical
Transport Roller
1st Drawer Paper
Take-Up Roll
Vertical
Transport Roller
2nd Drawer Paper
Take-Up Roll Paper Drawer Paper
2nd Vertical Take-Up Roll
1139M004AA 1142M002AA
Transport Roller
M-6
FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 MECHANICAL/ELECTRICAL
98.04.24
1174SBM0400A
4 SEQUENTIAL EXPLANATION
V Numbers given in rectangles in the following flowchart are timer values in seconds.
A The power cord is plugged into the outlet.
Power cord is plugged in.
ON
AC24V for Drum heating (Transformer)
ON
Drum Dehumidifying
Heater Only when Dehumidifying
ON Switch is ON
Paper Dehumidifying
Heater
B Power Switch is turned ON.
Power Switch ON
ON
DC5V (Power Supply Unit)
ON
DC24V (Power Supply Unit)
ON
Control panel
ON
The Cooling Fan turns at full speed.
ON
Approx. 3 The Cooling Fan turns at half speed.
ON
Fusing Heater Lamp
ON
Approx. 1 Scanner Reference Position Sensor
V If the Scanner is not at the home position, Scanner Motor is
energized to move the Scanner to the home position.
ON
Lens Reference Position Sensor
V If the Lens is not at the home position, Lens Motor is
energized to move the Lens to the home position.
ON
Mirror Reference Position Sensor
V If the 4th Mirror is not at the home position, Mirror
Motor is energized to move the Mirror to the home
position.
Starter setup and ATDC Sensor automatic adjustment
V Only when the Imaging Unit is new. I/U Fuse blows when the
starter setup sequence is completed normally.
M-7
FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 GENERAL, MECHANICAL/ELECTRICAL
98.04.24
C The Fusing Unit temperature reaches 205◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo