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
2. 4. Symbols and Functions of
RADF Various Components . . . . . . 2-24
2. 5. System Block Layout. . . . . . . . . . . . 2-26
2. 6. Disassembly and Replacement
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
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
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
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
10. 4. High-voltage Transformer
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
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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