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SERVICE MANUAL
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THEORY OF OPERATION
2010.01
Ver. 1.0
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Table of Contents
Related Manuals for Konica Minolta DF-619
Summary of Contents for Konica Minolta DF-619
- Page 1 More Service Manuals at www.service-manual.net More Service Manuals at www.service-manual.net More Service Manuals at www.service-manual.net More Service Manuals at www.service-manual.net More Service Manuals at www.service-manual.net SERVICE MANUAL THEORY OF OPERATION 2010.01 Ver. 1.0 WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET...
- Page 2 Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required.
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Page 3: Table Of Contents
Theory of Operation Ver. 1.0 Jan. 2010 CONTENTS DF-619 OUTLINE PRODUCT SPECIFICATIONS ................1 SECTION CONFIGURATION.................. 4 PAPER PATH......................4 CONFIGURATION/OPERATION CONFIGURATION ....................5 DRIVE ........................6 OPERATION ......................7 Paper feed section ....................7 6.1.1 Document feed tray ascent/descent control ..........7 6.1.2... - Page 4 Theory of Operation Ver. 1.0 Jan. 2010 Fan control......................27 6.7.1 Function ...................... 27 6.7.2 Control conditions ..................27 WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET...
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Page 5: Outline
Theory of Operation Ver. 1.0 Jan. 2010 1. PRODUCT SPECIFICATIONS OUTLINE PRODUCT SPECIFICATIONS A. Type Name Reverse automatic document feeder Paper feed section Paper feed from top of stack Sheet-through system Type Image reading section Back side: Reading by CIS Exit section Straight exit system Installation... - Page 6 1. PRODUCT SPECIFICATIONS Theory of Operation Ver. 1.0 Jan. 2010 D. Paper feed prohibited originals • If fed, trouble occurrence will be highly possible. Type of original Possible trouble Paper feed failure, damaged sheet, defective drive Sheets stapled or clipped together mechanism due to jammed staples or clips Sheets glued together Paper feed failure, damaged sheet...
- Page 7 Theory of Operation Ver. 1.0 Jan. 2010 1. PRODUCT SPECIFICATIONS F. Mixed original feed chart For metric Max. original 297 mm 257 mm 210 mm 182 mm 148 mm 128 mm size Mixed original size 297 mm 257 mm 210 mm 182 mm 148 mm 128 mm...
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Page 8: Section Configuration
2. SECTION CONFIGURATION Theory of Operation Ver. 1.0 Jan. 2010 SECTION CONFIGURATION Registration section Paper feed section Read section Paper exit section A108T2C505AA PAPER PATH Back side (CIS original read position) Feed tray Exit tray Front side (scanner original read position) A108T2C506AA WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET... -
Page 9: Configuration/Operation
Theory of Operation Ver. 1.0 Jan. 2010 4. CONFIGURATION CONFIGURATION/OPERATION CONFIGURATION Transportation cover Document feed tray Document guide Original read section A108T2C501AA DF control board (DFCB) CIS module (CIS) CIS power supply (CISPU) A108T2C502AA CIS inverter board (CINVB) Feed roller Pick-up roller Conveyance roller Separation roller... -
Page 10: Drive
5. DRIVE Theory of Operation Ver. 1.0 Jan. 2010 DRIVE Exit motor (M4) Back side cleaning motor (M7) Lift-up motor (M5) Take-up clutch (CL1) Take-up motor (M2) Reading motor (M1) Front side cleaning motor (M8) Registration motor (M3) Reading roller pressure/retraction motor (M6) A108T2C002DA WWW.SERVICE-MANUAL.NET... -
Page 11: Operation
Theory of Operation Ver. 1.0 Jan. 2010 6. OPERATION OPERATION Paper feed section 6.1.1 Document feed tray ascent/descent control • The document feed tray will move up to feed the original. • The lift-up motor provides the drive for ascent/descent motion of the document feed tray. A. - Page 12 6. OPERATION Theory of Operation Ver. 1.0 Jan. 2010 B. Descent motion • When all the originals are fed and the empty sensor is interrupted, the lift-up motor will reverse. • The lift-up motor will rotate the drive cam through the gear. The lift up lever moves along the cam, so that the document feed tray moves down.
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Page 13: Original Take-Up Control
Theory of Operation Ver. 1.0 Jan. 2010 6. OPERATION 6.1.2 Original take-up control • The take-up motor provides the drive for original take-up operations. • The drive from the take-up motor is transmitted to the pick-up roller and feed roller when the take-up clutch is energized. -
Page 14: Original Size Detection
6. OPERATION Theory of Operation Ver. 1.0 Jan. 2010 6.1.4 Original size detection • The original size is detected by the combination of the three length sensors and one restriction plate positional volume. Length sensor/3 (PS12) Length sensor/2 (PS11) Length sensor/1 (PS10) Before read sensor (PS6) Consolidation sensor/1 (PS13) Restriction plate positional... -
Page 15: Registration Section
Theory of Operation Ver. 1.0 Jan. 2010 6. OPERATION Registration section 6.2.1 Registration control • The original transported from the paper feed section will be transported to the paper exit section by the registration roller, the reading roller 1 and 2 and 3. •... -
Page 16: Read Section
6. OPERATION Theory of Operation Ver. 1.0 Jan. 2010 Read section • A 1-sided original is read by the scanner unit section of the main body after the leading edge of the original has moved past reading roller 1. For more details, see “8. SCANNER SECTION”. •... -
Page 17: Reading Roller Pressure/Retraction Control
Theory of Operation Ver. 1.0 Jan. 2010 6. OPERATION 6.3.2 Reading roller pressure/retraction control • Original speed fluctuates as the trailing edge of the original moves past reading roller 1. To inhibit these speed fluctuations, the reading roller pressure/retraction motor is employed to retract reading roller 1. -
Page 18: Df Original Glass Contamination Prevention Control
6. OPERATION Theory of Operation Ver. 1.0 Jan. 2010 6.3.3 DF original glass contamination prevention control A. DF original glass cleaning • A reading line can occur if the DF original glass is contaminated with dust or dirt. The DF original glass cleaning mechanism prevents this fault from occurring. - Page 19 Theory of Operation Ver. 1.0 Jan. 2010 6. OPERATION B. Details of DF original glass cleaning Condition Cleaning operation Sub power switch ON Rotates the cleaning brush one complete turn to check for its Predrive correct operation. Existing from sleep Rotates the cleaning brush one complete turn to perform Before starting reading cleaning.
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Page 20: Cis Original Reading Control
6. OPERATION Theory of Operation Ver. 1.0 Jan. 2010 6.3.4 CIS original reading control • The back side of the original is read by the CIS (contact image sensor) module. The image data read by the CIS is transferred to the DS image processing board. •... - Page 21 Theory of Operation Ver. 1.0 Jan. 2010 6. OPERATION • A cleaning brush to which a white plate is affixed is disposed on the side opposite the CIS module. Use of a specific position of the cleaning brush through rotation of the cleaning brush allows the following operations to be performed: “gain adjustment/shad- ing correction”, “ADF Scan Glass Contamin.
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Page 22: Cis Control When Sub-Power Switch Is Turned On
6. OPERATION Theory of Operation Ver. 1.0 Jan. 2010 6.3.5 CIS control when sub-power switch is turned ON 1. The CIS exposure lamps are turned ON. 2. The cleaning brush is detected at its home position. 3. The cleaning brush is rotated and brought to a stop at the gain adjustment position. The gain adjustment is made twice with the cleaning brush at that position. -
Page 23: Cis Control When The Start Key Is Pressed
Theory of Operation Ver. 1.0 Jan. 2010 6. OPERATION 6.3.7 CIS control when the start key is pressed • This control is performed only in the 2-sided original reading mode. A. Before a print cycle / back side reading 1. The cleaning brush is detected at its home position. 2. - Page 24 6. OPERATION Theory of Operation Ver. 1.0 Jan. 2010 C. After the print cycle 1. After the reading sequence, the CIS exposure lamps are turned OFF. 2. The cleaning brush is turned backward (to tame the brush). 3. The cleaning brush is brought to a stop when its home position is detected. 4.
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Page 25: Cis Glass Contamination Prevention Control
Theory of Operation Ver. 1.0 Jan. 2010 6. OPERATION 6.3.8 CIS glass contamination prevention control A. CIS glass cleaning • The CIS glass is cleaned only when two sides of the original are to be read. • When the back side cleaning motor is energized, the cleaning brush is rotated to remove dust and dirt from the surface of the CIS glass. -
Page 26: Cis Power Control
6. OPERATION Theory of Operation Ver. 1.0 Jan. 2010 6.3.9 CIS power control • The CIS power switch is provided to prevent an electric shock that the user may receive during a possible contact with the CIS module as he or she attempts to open the guide. •... -
Page 27: Paper Exit Section
Theory of Operation Ver. 1.0 Jan. 2010 6. OPERATION Paper exit section • The paper exit section includes the exit roller that feeds the original transported from the reading section out onto the exit tray. • The exit roller is driven by the exit motor. Exit motor (M4) Exit roller A108T2C020DA... -
Page 28: Paper Path
6. OPERATION Theory of Operation Ver. 1.0 Jan. 2010 Paper path 6.5.1 1-sided mode • For the paper feed operation in the 1-sided mode, see “6.5.2 2-sided mode”. • Reading of the back side of the original by the CIS is not done in the 1-sided mode. All other paper feed operations in the 1-sided mode are the same as those in the 2-sided mode. - Page 29 Theory of Operation Ver. 1.0 Jan. 2010 6. OPERATION 10. After the lapse of a predetermined period of time after the before read sensor has detected the leading edge of the original, reading of the front side of the original is started by the scanner.
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Page 30: Open/Close Detecting Section
6. OPERATION Theory of Operation Ver. 1.0 Jan. 2010 Open/close detecting section 6.6.1 DF angle open/close detection • The lever actuator is provided to detect the original size when using the auto document feeder as the original cover. • When lowering the reverse automatic document feeder to 15 degree angle or lower, the angle detection lever for the original cover on the copier will be pressed to turn ON the 15 degree sensor. - Page 31 Theory of Operation Ver. 1.0 Jan. 2010 6. OPERATION Fan control 6.7.1 Function Motor name Control conditions Take-up cooling fan motor (FM1) Prevents the temperature of the take-up motor from rising. CIS cooling fan motor (FM2) Prevents the temperature of the CIS module from rising. CIS cooling fan motor (FM2) Take-up cooling fan motor (FM1)
- Page 32 6. OPERATION Theory of Operation Ver. 1.0 Jan. 2010 Blank Page WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET WWW.SERVICE-MANUAL.NET...