Read Sharp AR-810 (serv.man24) Service Manual online
I
CONTENTS
1.
SPECIFICATIONS
1. 1.
Specifications . . . . . . . . . . . . . . . . . . 1-1
1. 2.
Accessories . . . . . . . . . . . . . . . . . . . 1-13
1. 3.
Options . . . . . . . . . . . . . . . . . . . . . . 1-13
1. 4.
Supplies. . . . . . . . . . . . . . . . . . . . . . 1-14
1. 5.
System List . . . . . . . . . . . . . . . . . . . 1-15
2.
COMPONENT LAYOUT & FUNCTIONS
2. 1.
Sectional View. . . . . . . . . . . . . . . . . . 2-1
2. 2.
Electric Parts Layout . . . . . . . . . . . . . 2-5
2. 3.
Symbols and Functions of
Various Components. . . . . . . . . . . . 2-16
Various Components. . . . . . . . . . . . 2-16
2. 4.
Symbols and Functions of
RADF Various Components . . . . . . 2-24
RADF Various Components . . . . . . 2-24
2. 5.
System Block Layout. . . . . . . . . . . . 2-26
2. 6.
Disassembly and Replacement
of Covers and PC Boards . . . . . . . . 2-27
of Covers and PC Boards . . . . . . . . 2-27
3.
COPY PROCESS
3. 1.
General Description. . . . . . . . . . . . . . 3-1
3. 2.
Details of Copy Process . . . . . . . . . . 3-2
3. 3.
Comparison of Copy Process
to AR-650/800 . . . . . . . . . . . . . . . . . 3-10
to AR-650/800 . . . . . . . . . . . . . . . . . 3-10
4.
GENERAL OPERATIONS
4. 1.
Overview of Operation. . . . . . . . . . . . 4-1
4. 2.
Operation. . . . . . . . . . . . . . . . . . . . . . 4-1
4. 3.
Abnormality Detection . . . . . . . . . . . . 4-6
4. 4.
Flowchart. . . . . . . . . . . . . . . . . . . . . 4-11
5.
CONTROL PANEL
5. 1.
Control Panel and Display Panel. . . . 5-1
5. 2.
Items Shown on Display Panel . . . . . 5-2
5. 3.
Relation between Copier State
and Operator’s Action . . . . . . . . . . . . 5-7
and Operator’s Action . . . . . . . . . . . . 5-7
5. 4.
Operation. . . . . . . . . . . . . . . . . . . . . . 5-8
5. 5.
Disassembly and Replacement. . . . 5-11
6.
SCANNING SECTION
6. 1.
Function. . . . . . . . . . . . . . . . . . . . . . . 6-1
6. 2.
Construction . . . . . . . . . . . . . . . . . . . 6-2
6. 3.
Operation. . . . . . . . . . . . . . . . . . . . . . 6-4
6. 4.
Control for Exposure Lamp . . . . . . . . 6-7
6. 5.
CCD Control . . . . . . . . . . . . . . . . . . 6-10
6. 6.
Automatic Original Size
Detection Circuit . . . . . . . . . . . . . . . 6-11
Detection Circuit . . . . . . . . . . . . . . . 6-11
6. 7.
Disassembly and Replacement. . . . 6-15
7.
IMAGE PROCESSING
7. 1.
General Description . . . . . . . . . . . . . 7-1
7. 2.
Image Processing Circuit . . . . . . . . . 7-2
7. 3.
SLG Board (PWA-F-SLG-340) . . . . . 7-4
7. 4.
PLG Board (PWA-F-PLG-340) . . . . . 7-7
7. 5.
Scanning Section . . . . . . . . . . . . . . . 7-8
7. 6.
Writing Section . . . . . . . . . . . . . . . . . 7-8
8.
LASER & OPTICAL UNIT
8. 1.
General Description . . . . . . . . . . . . . 8-1
8. 2.
Structure . . . . . . . . . . . . . . . . . . . . . . 8-3
8. 3.
Laser Diode . . . . . . . . . . . . . . . . . . . 8-7
8. 4.
Disassembly and Replacement . . . . 8-8
9.
PAPER FEEDING SECTION
9. 1.
General Description . . . . . . . . . . . . . 9-1
9. 2.
Functions . . . . . . . . . . . . . . . . . . . . . 9-1
9. 3.
Operation . . . . . . . . . . . . . . . . . . . . . 9-4
9. 4.
Drive Circuit for Tray-up Motor . . . . 9-10
9. 5.
Disassembly and Replacement . . . 9-11
10. PROCESS SECTION
10. 1.
Construction . . . . . . . . . . . . . . . . . . 10-1
10. 2.
Functions . . . . . . . . . . . . . . . . . . . . 10-2
10. 3.
Charger Wire Cleaner
Operational Circuit . . . . . . . . . . . . . 10-3
Operational Circuit . . . . . . . . . . . . . 10-3
10. 4.
High-voltage Transformer
Output Control Circuit . . . . . . . . . . . 10-4
Output Control Circuit . . . . . . . . . . . 10-4
10. 5.
Surface Potential Sensor . . . . . . . . 10-6
10. 6.
Disassembly and Replacement . . . 10-8
11. DRUM/CLEANER UNIT
11. 1.
Construction . . . . . . . . . . . . . . . . . . 11-1
11. 2.
Functions . . . . . . . . . . . . . . . . . . . . 11-2
11. 3.
Drum Temperature Detection
Circuit . . . . . . . . . . . . . . . . . . . . . . . 11-2
Circuit . . . . . . . . . . . . . . . . . . . . . . . 11-2
11. 4.
Image Quality Control . . . . . . . . . . . 11-3
11. 5.
Disassembly and Replacement . . . 11-6
12. DEVELOPER UNIT
12. 1.
Construction . . . . . . . . . . . . . . . . . . 12-1
12. 2.
Functions . . . . . . . . . . . . . . . . . . . . 12-2
12. 3.
Developer Unit Drive. . . . . . . . . . . . 12-4
12. 4.
Motor Drive Circuit . . . . . . . . . . . . . 12-6
12. 5.
Auto-toner Sensor Circuit . . . . . . . . 12-9
12. 6.
Disassembly and Replacement . . 12-12
13. TRANSFER/TRANSPORT UNIT
13. 1.
General Description . . . . . . . . . . . . 13-1
13. 2.
Operation . . . . . . . . . . . . . . . . . . . . 13-1
13. 3.
Functions . . . . . . . . . . . . . . . . . . . . 13-2
13. 4.
Disassembly and Replacement . . . 13-4
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