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SERVICE MANUAL

2010.01

Ver.

1.

0

THEORY OF OPERATION

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Summary of Contents for DF-619

Page 1: ...ore 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 WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET ...

Page 2: ...e To indicate clearly a page that contains the revision is shown near the page number of the corresponding page The number inside represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted only to the latest ones with the old ones deleted When a page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with t...

Page 3: ... 3 2 Reading roller pressure retraction control 13 6 3 3 DF original glass contamination prevention control 14 6 3 4 CIS original reading control 16 6 3 5 CIS control when sub power switch is turned ON 18 6 3 6 CIS control when the document is loaded 18 6 3 7 CIS control when the start key is pressed 19 6 3 8 CIS glass contamination prevention control 21 6 3 9 CIS power control 22 6 3 10 Guide set...

Page 4: ... OPERATION Theory of Operation Ver 1 0 Jan 2010 ii 6 7 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 ...

Page 5: ...nment Center Document loading Face up Modes Standard mode Mixed original detection mode FAX mode Type of document Standard mode 1 sided mode 35 to 210 g m2 9 25 to 55 75 lb 2 sided mode 50 to 210 g m2 13 25 to 55 75 lb Mixed original detection mode 1 sided 2 sided mode 50 to 128 g m2 13 25 to 34 lb FAX mode 1 sided mode 35 to 210 g m2 9 25 to 55 75 lb 2 Sided Mode 50 to 210 g m2 13 25 to 55 75 lb ...

Page 6: ...nsport failure Offset master paper Paper feed failure transport failure Glossy photographic paper or glossy enamel paper Transport failure damaged sheet Sheets clipped or notched Damaged sheet transport failure Sheets patched Patched part folded or torn sheet Type of original Possible trouble Sheets lightly curled Curled amount 10 to 15 mm Dog eared exit failure transport failure Heat sensitive pa...

Page 7: ... NG NG NG NG NG OK OK Max original size 11 8 1 2 5 1 2 Mixed original size 11 x 17 8 1 2 x 11 8 1 2 x 14 8 1 2 x 11S 5 1 2 x 8 1 2 5 1 2 x 8 1 2S 11 11 x 17 OK OK 8 1 2 x 11 OK OK 8 1 2 8 1 2 x 14 OK OK OK OK OK 8 1 2 x 11S OK OK OK OK OK 5 1 2 x 8 1 2 NG NG OK OK OK 5 1 2 5 1 2 x 8 1 2S NG NG NG NG NG OK OK Mixed original feed available Tilted with in 1 5 or less NG No mixed original feed Can not...

Page 8: ...TH A108T2C505AA Paper feed section Read section Registration section Paper exit section A108T2C506AA Feed tray Exit tray Front side scanner original read position Back side CIS original read position WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET ...

Page 9: ...t feed tray Document guide Original read section Separation roller Feed roller Reading roller 1 Exit roller Registration roller Reading roller 2 Pick up roller Conveyance roller Reading roller 3 CIS module CIS CIS power supply CISPU CIS inverter board CINVB DF control board DFCB WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET ...

Page 10: ...tor M2 Registration motor M3 Exit motor M4 Reading motor M1 Lift up motor M5 Reading roller pressure retraction motor M6 Front side cleaning motor M8 Take up clutch CL1 Back side cleaning motor M7 WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET ...

Page 11: ...en the start key is pressed with the original loaded in position 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 up to the take up position The document feed tray will stop moving up when the lift up upper sensor is transmitted A108T2C004DA A108T2C003DA Lift up motor M5 Empty sensor PS1 Lift up lower sensor PS3...

Page 12: ...ift 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 The document feed tray will stop moving down when the lift up lower sensor is inter rupted WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET ...

Page 13: ...tion of the rollers The original picked up and fed in is transported onto the conveyance roller that is driven by the take up motor 6 1 3 Original set detection To prevent a original set mistake the original set sensor detects a original loaded in the document feed tray A108T2C005DA Take up motor M2 Separation roller Feed roller Pick up roller Conveyance roller Take up clutch CL1 A108T2C006DA Orig...

Page 14: ...ee consolidation sensors are mounted to where the paper passes immediately after it is fed It is for detecting the width of the original for mixed original AMS C Detecting the length of the original 1 The length of the original will be detected by the length sensor 1 2 3 Length sensor 1 and 3 are mounted in this order with the length sensor 2 being closest to the feed roller D Detecting the length...

Page 15: ...rted a loop is formed in the original between the con veyance roller and registration roller to thereby correct any skew in the original The registration sensor detects time between two successive originals and the timing at which to energize the registration motor is controlled A108T2C008DA Take up motor M2 Registration sensor PS5 Registration motor M3 Loop formed Original Conveyance roller Conve...

Page 16: ...the main body after the leading edge of the original has moved past reading roller 1 The back side of the 2 sided original is read by the CIS after the leading edge of the original has moved past reading roller 2 6 3 1 Reading transport control The reading roller 1 and 2 and 3 are driven by the reading motor The 2 sided original the front side and back side is read at once in one pass of the orig ...

Page 17: ...ading roller 1 To inhibit these speed fluctuations the reading roller pressure retraction motor is employed to retract reading roller 1 A108T2C010DA A0HUT2C005DA Reading roller 1 Lever Reading roller pressure retraction motor M6 Read roller sensor PS8 Reading roller pressure retraction motor M6 WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE ...

Page 18: ...o the DF original glass The cleaning brush is rotated by the front side cleaning motor The front side cleaning sensor detects the cleaning brush at its home position A108T2C012DA A108T2C011DA Front side cleaning motor M8 Front side cleaning sensor PS18 Cleaning brush DF original glass DF original glass Home position During cleaning Cleaning brush Rotates forward during cleaning counterclockwise Ro...

Page 19: ...urn to perform cleaning During reading not performed in black mode Rotates the cleaning brush one complete turn to perform cleaning for every two originals during continuous reading of originals Rotates the cleaning brush three complete turns to perform cleaning for each original during continuous reading of origi nals if the despeckle mode is selected After completing read ing last original The c...

Page 20: ...original reading section consists of the CIS module CIS inverter board and the CIS power supply The CIS module has two CIS exposure lamps A108T2C023DA A108T2C013DA Lens Original CIS exposure lamp CEL Back side cleaning motor M7 Cleaning brush CIS module CIS CIS power supply CISPU CIS inverter board CINVB A108T2C507AA CIS module CIS CIS exposure lamp CEL Lens CCD CCD WWW SERVICE MANUAL NET WWW SERV...

Page 21: ... performed gain adjustment shad ing correction ADF Scan Glass Contamin Sensitivity and CIS glass cleaning by the brush Document passage is performed at the home position Shading correction gain adjustment and ADF Scan Glass Contamin Sensitivity are made using the shading surface A108T2C014DA Cleaning brush CIS glass CIS module CIS White plate affixed Home position Shading correction surface WWW SE...

Page 22: ...he cleaning brush cleans the CIS glass during its first turn The cleaning brush uses the shading correction surface to perform the shading cor rection during its second and third turn The shading correction is performed a total of twice The cleaning brush uses the shading correction surface to perform ADF Scan Glass Contamin Sensitivity during its fourth turn 4 The CIS exposure lamps are turned OF...

Page 23: ...peration is performed The shading correction operation is performed at predetermined intervals during a multi print cycle in order to maintain an appropriate shading correction value 1 Cleaning operation 1 The cleaning brush is rotated one complete turn The cleaning brush normally makes one turn but makes three turns in the despeckle mode 2 With the CIS exposure lamps ON the cleaning brush is brou...

Page 24: ...he cleaning brush uses the shading correction surface to perform the shading correction during its second and third turn The shading correction is performed a total of twice The cleaning brush uses the shading correction surface to perform ADF Scan Glass Contamin Sensitivity during its fourth turn The cleaning brush is brought to a stop at its home position The CIS exposure lamps are turned OFF NO...

Page 25: ...leaning of the back side and the cleaning of the back side sources its power drive differently from the front side The cleaning brush at its home position is detected by the back side cleaning sensor For more details see 6 3 6 CIS control when the start key is pressed A108T2C018DA A108T2C017DA Home position Cleaning brush CIS glass During cleaning CIS module CIS Image reading position Cleaning bru...

Page 26: ...wer is supplied to the CIS module 6 3 10 Guide set detection The guide is provided to facilitate misfeed clearing procedures performed near the back side reading position The CIS under guide open close sensor detects the guide in the closed position A108T2C019DA When DF is opened When DF is closed CIS power switch SW1 ON CIS power switch SW1 OFF Lever A108T2C509AA Guide Lever CIS under guide open ...

Page 27: ...xit 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 A108T2C020DA Exit roller Exit motor M4 WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET ...

Page 28: ...ance roller so that the original is transported onto the registration roller 6 When the registration sensor detects the leading edge of the original a loop is formed in the original After the lapse of a predetermined period of time the take up motor is deener gized thus shutting down the drive for the conveyance roller 7 After the loop has been formed in the original the registration motor is ener...

Page 29: ... be prepared for the next original 12 When the leading edge of the original moves past reading roller 2 reading of the back side of the original is started by the CIS Reading of the back side of the orig inal is done only in the 2 sided mode 13 Reading roller 3 is driven to transport the original onto the exit section 14 The reading motor is deenergized after the trailing edge of the original has ...

Page 30: ...r lower the angle detection lever for the original cover on the copier will be pressed to turn ON the 15 degree sensor 6 6 2 DF open close detection The magnet is installed to detect the open close of the reverse automatic document feeder on the copier side The original cover sensor on the copier will turn ON by the magnet when lowering DF A108T2C503AA Original cover sensor RS201 Magnet Lever actu...

Page 31: ...dule from rising A180T2C022DA Take up cooling fan motor FM1 CIS cooling fan motor FM2 Motor name Control Control conditions Take up cooling fan motor FM1 STOP In standby state Full speed When the original is fed through CIS cooling fan motor FM2 STOP When the sub power switch of main body is turned OFF When malfunction occurs Half speed In standby state Full speed When two sides are read back side...

Page 32: ...PERATION Theory of Operation Ver 1 0 Jan 2010 28 DF 619 CONFIGURATION OPERATION Blank Page WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET WWW SERVICE MANUAL NET ...

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