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Toshiba e-STUDIO 520, e-STUDIO 600, e-STUDIO 720, e-STUDIO 850, Service Manual
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Toshiba.
You can print, zoom or read any diagram, picture or page from this Service Manual. Every chapter on this manual is fully detailed and contain all the simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of Toshiba e-STUDIO 520, e-STUDIO 600, e-STUDIO 720, e-STUDIO 850 photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:
1. SPECIFICATIONS/ACCESSORIES/OPTIONS/SUPPLIES
1.1 Specifications
1.2 Accessories
1.3 Options
1.4 Supplies
1.5 System List
2. OUTLINE OF THE MACHINE
2.1 Sectional View
2.2 Electric Parts Layout
2.3 Symbols and Functions of Various Components
2.4 System Block Diagram
2.5 Installation and Replacement of Covers
2.6 Installation and Separation of PC Boards
2.7 Removal and Installation of Options
3. COPY PROCESS
3.1 General Description
3.2 Details of Copy Process
3.3 Comparison of Copy Process to e-STUDIO550/650/810
4. GENERAL OPERATION
4.1 Overview of Operation
4.2 Description of Operation
4.2.1 Warming-up
4.2.2 Ready state (ready for copying)
4.2.3 Drawer feed copying with the [START] button
4.2.4 Bypass feed copying
4.2.5 Interruption copying
4.3 Detection of Abnormality
4.3.1 Types of abnormality
4.3.2 Description of abnormality
4.4 Flowchart
4.4.1 Power ON to ready
4.4.2 Automatic feed copying
5. CONTROL PANEL
5.1 Operation Area and Display Area
5.2 Items Shown on the Control Panel
5.2.1 Display
5.3 Relation between the Equipment State and Operator�s Operation
5.4 Operation
5.4.1 Dot matrix LCD circuit
5.4.2 LED display circuit
5.5 Disassembly and Replacement
6. SCANNING SECTION
6.1 Function
6.2 Construction
6.3 Operation
6.3.1 Scanner motor (M1)
6.3.2 Two-phase motor drive circuit (fixed-current type)
6.4 Control for Exposure Lamp
6.4.1 General description
6.4.2 Exposure lamp
6.4.3 Control circuit for exposure lamp
6.5 CCD Control
6.5.1 Opto-electronic conversion
6.5.2 Shading correction
6.6 Automatic Original Size Detection Circuit
6.6.1 Principle of original size detection
6.6.2 Process of original size detection
6.7 Disassembly and Replacement
7. IMAGE PROCESSING
7.1 General Description
7.2 Configuration
7.3 Scanning Section Control PC Board (SLG)
7.3.1 Features
7.3.2 Functions of image processing
7.4 Laser Control PC Board (PLG)
7.4.1 Features
7.4.2 Functions of image processing
7.5 Laser Driving PC Board (LDR)
8. LASER OPTICAL UNIT
8.1 General Description
8.2 Structure
8.2.1 Laser optical unit
8.2.2 Polygonal motor unit
8.2.3 f? lenses 1 and 2
8.2.4 H-sync detection PC board (SNS board)
8.2.5 Laser driving board (LDR1/LDR2 board)
8.2.6 Slit glass
8.3 Laser Diode Control Circuit
8.4 Polygonal Motor Control Circuit
8.5 Laser Unit Cooling Fan Control Circuit
8.6 Disassembly and Replacement
9. PAPER FEEDING SYSTEM
9.1 General Description
9.2 Functions
9.3 Operation
9.3.1 Operation of bypass pickup roller
9.3.2 Operation of drawer pickup roller
9.3.3 Paper separation
9.3.4 Driving
9.3.5 General operation
9.3.6 Description of Tandem LCF Operation
9.4 Tray-up motor control circuit
9.5 Feed motor control circuit
9.6 Transport motor control circuit
9.7 Registration motor control circuit
9.8 Tandem LCF tray-up motor / end fence motor
9.9 Disassembly and Replacement
10. PROCESS RELATED SECTION
10.1 Construction
10.2 Functions
10.3 Charger Wire Cleaner Control Circuit
10.3.1 General description
10.3.2 Configuration
10.4 High-voltage Transformer Control Circuit
10.4.1 General description
10.4.2 Description of operation
10.5 Drum Surface Potential Sensor Control Circuit
10.5.1 General description
10.5.2 Configuration
10.5.3 Description of operation
10.6 Temperature/humidity detection circuit
10.6.1 Outline
10.6.2 Construction
10.7 Disassembly and Replacement
11. DRUM/CLEANER UNIT
11.1 Construction
11.2 Functions
11.3 Drum Temperature Detection Circuit
11.4 Image Quality Control
11.4.1 Outline
11.4.2 Construction
11.4.3 Principle of Image Quality Sensor
11.4.4 Flow of control
11.5 Drum motor control circuit
11.6 Disassembly and Replacement
12. DEVELOPER UNIT
12.1 Construction
12.2 Functions
12.3 Developer Unit Drive
12.4 Motor Control Circuit
12.4.1 New toner supply motor control circuit
12.4.2 Developer unit motor control circuit
12.5 Auto-toner Circuit
12.5.1 General description
12.5.2 Operation of auto-toner sensor
12.6 Disassembly and Replacement
13. TRANSFER/TRANSPORT UNIT
13.1 General Description
13.2 Functions
13.3 General Description of Transfer Belt Unit Operation
13.4 Transfer belt motor control circuit
13.5 Disassembly and Replacement
14. FUSER UNIT
14.1 Outline
14.2 Operation
14.3 Functions
14.4 Fuser Control Circuit
14.4.1 Configuration
14.4.2 Heating principle of IH coil
14.4.3 IH control circuit interface
14.4.4 Abnormality in the IH control circuit
14.4.5 Temperature detection section
14.5 Fuser Motor Control Circuit
14.6 Disassembly and Replacement
15. EXIT/REVERSE SECTION
15.1 General Description
15.2 Functions
15.3 Driving of Exit/Reverse section
15.4 Operation
15.5 Exit motor control circuit
15.6 Reverse motor control circuit
15.7 Disassembly and Replacement
16. REVERSING AUTOMATIC DOCUMENT FEEDER (RADF)
16.1 General Description
16.2 Operation
16.3 Drive System
16.4 Signal Block Diagram
16.5 Operations
16.5.1 A4 single-sided feeding (Operational condition: A4 original/Reproduction ratio: 100)
16.5.2 A4 two-sided feeding (Operational condition: A4 original/Reproduction ratio: 100)
16.5.3 A4 single-sided feeding (Operational condition: A3 original/Reproduction ratio: 100)
16.5.4 A3 two-sided feeding (Operational condition: A3 original/Reproduction ratio: 100)
16.5.5 Single-sided feeding at mixed-original mode (Operational condition: A4-R and FOLIO originals/Reproduction ratio: 100)
16.6 Jams
16.6.1 Jams at feeding section
16.6.2 Jams at transporting section
16.6.3 Jams at large original exit section
16.6.4 Jams at small original reverse section
16.6.5 Jams at small original exit section
16.6.6 Jams at intermediate transport section
16.6.7 Jams when the cover is open
16.6.8 Jams when 24V power is OFF
16.6.9 Jams when paper remains
16.7 Errors
16.8 Original Size Detection
16.8.1 Original size detection method
16.8.2 Original size detection chart
16.9 Flow Chart
16.10Timing Chart
16.11Circuits
16.12Input/Output Signals
16.13Disassembly and Replacement
17. POWER SUPPLY UNIT
17.1 Construction
17.2 Operation of DC Output Circuit
17.3 Output Channel
17.4 Fuse
17.5 Configuration of Power Supply Unit
17.6 Power Supply Sequence
17.7 AC Wire Harness
18. PC BOARDS
Numbers of pages: 466.
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