Sharp SF-2314 Service Manual Download

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4-2. Copy lamp unit replacement . . . . . . . . . . . . . . . . . 6-9

4-3. Mirror base drive wire replacement . . . . . . . . . . . . 6-9

4-4. Lens and lens drive wire replacement

(Only the zoom function model) . . . . . . . . . . . . . 6-10

4-5. No. 4/5 mirror unit and

peripheral parts replacement . . . . . . . . . . . . . . . 6-11

4-6. Optical unit removal . . . . . . . . . . . . . . . . . . . . . . 6-11

4-7. Other parts in the optical system . . . . . . . . . . . . . 6-11

4-8. Light adjustment plate/temperature fuse

removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

5. SPF section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

5-1. SPF mechanism removal . . . . . . . . . . . . . . . . . . 6-13

5-2. Paper feed roller/takeup roller replacement . . . . 6-14

5-3. Reverse roller (ass’y) replacement . . . . . . . . . . . 6-14

5-4. SPF control PWB replacement . . . . . . . . . . . . . . 6-15

5-5. Clutch/solenoid removal . . . . . . . . . . . . . . . . . . . 6-15

5-6. Sensor removal . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

6. Drum section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

6-1. Drum unit removal . . . . . . . . . . . . . . . . . . . . . . . . 6-16

7. Developer section . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

7-1. Developer unit removal . . . . . . . . . . . . . . . . . . . . 6-16

7-2. Developer cartridge removal . . . . . . . . . . . . . . . 6-16

7-3. Toner motor removal . . . . . . . . . . . . . . . . . . . . . 6-17

7-4. Toner density sensor . . . . . . . . . . . . . . . . . . . . . 6-17

8. Operation panel section/medium cabinet . . . . . . . . . . 6-17

9. Major parts in the frame side . . . . . . . . . . . . . . . . . . . . 6-18

9-1. Ozone filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

9-2. Optical unit/SPF unit cooling fan removal . . . . . . 6-18

9-3. Ventilation fan motor . . . . . . . . . . . . . . . . . . . . . 6-18

9-4. Transport roller clutch . . . . . . . . . . . . . . . . . . . . 6-19

9-5. Paper exit sensor . . . . . . . . . . . . . . . . . . . . . . . . 6-19

[ 7 ] ADJUSTMENTS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

1. Developer section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

(1) MG roller main pole position adjustment . . . . . . . . . 7-1

(2) Adjustment of clearance between DV doctor and MG

roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

2. Optical section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

A. Adjustments list . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

B. Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

C. Adjustment contents . . . . . . . . . . . . . . . . . . . . . . . . 7-6

(1)  Lens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
(2)  Mirror   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
(3)  Image distortion adjustment  . . . . . . . . . . . . . . . 7-8
(4)  Copy image center position adjustment  . . . . .  7-12
(5)  Focus adjustment (Resolution adjustment)  . . .  7-14
(6)  Copy magnification ratio adjustment  . . . . . . . . 7-15
(7)  Uniformity adjustment  . . . . . . . . . . . . . . . . . . . 7-18
(8)  Image loss/void area adjustment . . . . . . . . . . . 7-19

3. COPY DENSITY ADJUSTMENT . . . . . . . . . . . . . . . . 7-26

(1) Copy density adjustment timing . . . . . . . . . . . . . 7-26

(2) Note for copy density adjustment . . . . . . . . . . . . 7-26

(3) Necessary items for the copy density adjustment 7-26

(4) Copy density adjustment mode . . . . . . . . . . . . . . 7-26

(5) Copy density adjustment procedure . . . . . . . . . . 7-26

A. Test chart (UK0G-0162FCZZ) setting . . . . . . 7-26
B. Normal copy mode (Non-toner-save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-26

C. Normal copy mode (Toner save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-27

D. Photo copy mode (Non-toner-save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-27

E. Auto copy mode (Non-toner-save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-27

F. Auto copy mode (Toner save mode) copy

density adjustment . . . . . . . . . . . . . . . . . . . . . 7-28

G. Copy density adjustment in the SPF

copy mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-28

(6) Copy density adjustment table . . . . . . . . . . . . . . .7-29

4. Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-30

(1) Transfer charger wire installation . . . . . . . . . . . . .7-30

(2) DV bias adjustment . . . . . . . . . . . . . . . . . . . . . . .7-30

(3) Separation charger output adjustment . . . . . . . . .7-30

[ 8 ] SIMULATIONS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1

1. Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1

2. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1

3. Operating procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1

4. Purpose list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2

5. Details of simulations . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3

6. User simulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-13

[ 9 ] SELF DIAG

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1

1. Summary/purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1

2. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1

3. Clearing the self diag display . . . . . . . . . . . . . . . . . . . . .9-1

4. Self diag contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2

5. Conditions for the JAM display . . . . . . . . . . . . . . . . . . . .9-7

1) Paper feed section . . . . . . . . . . . . . . . . . . . . . . . . . .9-7

2) Transport section . . . . . . . . . . . . . . . . . . . . . . . . . . .9-7

[10] SERVICING AT MEMORY TROUBLE AND

MAIN CONTROL PWB REPLACEMENT

. . . .10-1

1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1

2. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1

3. Remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1

4. Set value recording sheet . . . . . . . . . . . . . . . . . . . . . . .10-4

5. Memory simulation list . . . . . . . . . . . . . . . . . . . . . . . . .10-5

[11] MAINTENANCE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1

[12] ELECTRICAL SECTION

. . . . . . . . . . . . . . . . . . . .12-1

1. System block diagram . . . . . . . . . . . . . . . . . . . . . . . . . .12-1
2. System operation at power ON . . . . . . . . . . . . . . . . . . .12-1

3. Main circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

(1) Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

(2) CPU (IC110) M37702 . . . . . . . . . . . . . . . . . . . . . .12-2

Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

Pin arrangement . . . . . . . . . . . . . . . . . . . . . . .12-2

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . .12-3

CPU: M37702 (IC110) pin signals . . . . . . . . . .12-4

(3) Start/stop control circuit . . . . . . . . . . . . . . . . . . . .12-5

(4) Heater lamp control circuit . . . . . . . . . . . . . . . . . .12-6

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-6

(5) Driver circuit (Solenoid, magnetic clutch) . . . . . . .12-7

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7

(6) Stepping motor drive circuit . . . . . . . . . . . . . . . . .12-7

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7

(7) AE (Auto Exposure) sensor circuit . . . . . . . . . . . .12-7

(8) Toner supply motor drive circuit . . . . . . . . . . . . . .12-8

(9) Reset IC (IC113) . . . . . . . . . . . . . . . . . . . . . . . . . .12-8

Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-8

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-8

(10) Copy lamp control section . . . . . . . . . . . . . . . . . .12-9

4. Operating section . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

(1) Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

(2) Display circuit . . . . . . . . . . . . . . . . . . . . . . . . . . .12-12

Block diagram . . . . . . . . . . . . . . . . . . . . . . . .12-12

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . .12-12

(3) LED display . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13

5. Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13

(1) Signal name and output voltage . . . . . . . . . . . . .12-13

Summary of Contents for SF-2314

Page 1: ... 8 SIMULATIONS 8 1 9 SELF DIAGNOSTICS 9 1 10 SERVICE AT MEMORY TROUBLE AND 10 MAIN CONTROL PWB REPLACEMENT 10 1 11 MAINTENANCE 11 1 12 ELECTRICAL SECTION 12 1 SHARP CORPORATION CONTENTS This document has been published to be used for after sales service only The contents are subject to change without notice Parts marked with is important for maintaining the safety of the set Be sure to replace the...

Page 2: ...copier unit 4 9 5 GENERAL DESCRIPTIONS OF EACH SECTION 5 1 1 Paper feed section 5 1 2 Separation transport section 5 2 3 Fuser paper exit section 5 2 4 Developer section 5 2 5 Optical system 5 3 5 1 General descriptions 5 3 1 Original table 5 3 2 Copy lamp 5 3 3 Mirror 5 3 4 Lens Fixed focus lens 5 3 5 Lens home position sensor LHPS 5 3 6 Lens base 5 3 7 Lens drive shaft 5 4 8 Lens drive wire 5 4 ...

Page 3: ...ure 7 26 A Test chart UK0G 0162FCZZ setting 7 26 B Normal copy mode Non toner save mode copy density adjustment 7 26 C Normal copy mode Toner save mode copy density adjustment 7 27 D Photo copy mode Non toner save mode copy density adjustment 7 27 E Auto copy mode Non toner save mode copy density adjustment 7 27 F Auto copy mode Toner save mode copy density adjustment 7 28 G Copy density adjustmen...

Page 4: ...power save mode time power save mode warm up time can be set by the user simulation 2 Target users Average copy volume of 2 000 3 000 sheets month max 10 000 sheets month 3 System outline SPF Standard 50 No 2 tray unit Option 250 sheets paper tray SF UB14 Zooming range 64 129 250 sheet tray Zooming range 64 129 250 sheet tray Zooming range 1 1 250 sheet tray Single manual feed Standard 50 sheet mu...

Page 5: ... ratio AB series 3R 3E 129 122 115 81 70 64 Inch series 2R 2E 129 117 78 64 Zoom width 64 129 9 Exposure Exposure mode Auto Manual Photo Manual steps 9 steps 10 Void width Normal Reduction Enlargement Void area Lead edge 3 0mm or less Lead edge 3 0mm or less Lead edge 3 0mm or less Side front 3 0mm or less Side front 3 0mm or less Side front 3 0mm or less Rear edge 1mm 3 0mm Rear edge 1mm 3 0mm Re...

Page 6: ... source Halogen lamp Exposure system Slit exposure by moving the light source Magnification ratio changing system By changing the lens position and scan speed Lens Fixed focus lens 3 Process section Charging system DC scorotron system Transfer system DC scorotron system Separation system Discharge plate separation pawl Main charger grid voltage Copy mode Simulations No Grid voltage Standard 8 02 7...

Page 7: ...CD SF234SDx10 3 Black toner Black toner cartridge 200g x 10 SF234CT SF234STx10 4 Heat roller kit Upper heat roller x 1 SF214HR Upper fusing separation pawl x 3 Fusing bearing x 1 Lower heat roller x 1 Lower fusing separation pawl x 4 SEEG SUK SCA SCNZ Europe Middle and Near East Africa No Name Content Product name 1 OPC drum kit OPC drum x 1 SF234DM Cleaning blade x 1 2 Black developer Black devel...

Page 8: ...tober Y November and Z December 8 9 Numeral Indicates the day of packing F Alphabet Indicates the factory of production A is the code for Nara plant B Developer and toner The lot number of toner is put on the individual cartridge package and on the group package and that of toner is put on the bag and the group package The lot number is of 7 digits each digit indicating as follows 1 Alphabet Indic...

Page 9: ...cover 5 Original guide 6 Document table 7 Manual bypass guide 8 Manual bypass 9 Operation panel F Paper tray G Front cover H Release button I Power switch J Toner cartridge release lever K Handel L Toner cartridge M Open close lever N Photoconductive drum O Fusing unit High temperature P Fusing unit lever 1 2 3 4 5 6 9 10 11 12 13 7 8 20 19 17 18 16 15 14 Upper unit Lower unit 3 1 ...

Page 10: ...eady indicator N Power save indicator O SPF misfeed indicator P SPF indicator C 5 4 3 8 9 1 6 7 2 0 5 1 2 3 4 POWER SAVE TRAY SELECT EXPOSURE AUTO MANUAL PHOTO C 5 4 3 8 9 1 6 7 2 0 5 1 2 3 4 78 64 100 POWER SAVE TRAY SELECT EXPOSURE AUTO MANUAL PHOTO COPY RATIO ZOOM C 5 4 3 8 9 1 6 7 2 0 5 1 2 3 4 100 POWER SAVE TRAY SELECT EXPOSURE AUTO MANUAL PHOTO COPY RATIO ZOOM 129 117 512x 81 2 812x11 81 2x...

Page 11: ...Blank lamp P Developer magnet roller Q No 4 mirror R No 5 mirror S Developer tank T Manual paper feed roller U Manual feed take up roller V Manual paper feed follower roller W Tray paper feed takeup roller X Tray transport follower roller Y Transport roller Upper Z Tray paper feed roller Option tray transport roller Resist roller Resist roller Transfer charger _ Photoconductor drum Suction belt a ...

Page 12: ...ansport sensor Transmission photo sensor H when paper is sensed 6 SPFD SPF document set sensor Transmission photo sensor L when a document is set 7 LHPD Lens home position sensor Transmission photo sensor H at the home position 8 PWD Paper size large small sensor Transmission photo sensor L with the large size 9 PPD Paper transport sensor Transmission photo sensor L when paper is sensed F CPED1 Tr...

Page 13: ...port roller rotation 3 PSPS Paper separation solenoid For paper separation solenoid drive 4 RRC Resist roller clutch For resist roller rotation 5 TRC Transport roller clutch For transport roller rotation 6 MPFS Manual paper feed solenoid For takeup roller pressing 7 CPFC1 Tray paper feed clutch For paper feed roller rotation 8 SPFM Multi paper feed clutch For multi paper feed roller rotation 3 4 1...

Page 14: ...brushless 3 CFM Cooling fan motor For cooling the optical system DC brushless 4 MM Main motor For the main body drive and the option drive DC brushless 5 LM Lens motor For the optical lens drive DC stepping 6 MRM Mirror motor For the optical mirror base drive DC brushless 7 TM Toner motor For toner supply DC synchronous 8 SPFFM SPF cooling fan motor For cooling the optical system in the SPF mode D...

Page 15: ...Main PWB Main body control 4 AE PWB Document density auto exposure detection 5 Blank lamp PWB Blank lamp control 6 Lower unit PWB Lower unit parts control 7 High voltage PWB Supply of the process high voltage and the developer bias voltage 8 Operation PWB Operation input display control 9 SPF control PWB SPF control 7 3 1 4 2 5 6 8 9 3 7 ...

Page 16: ...ts 1 Warranty card For Austraria 1 Warranty resistration For U K 1 Installation report For Europe except U K 1 15 Consumable parts kit Developer 1 Toner for installation 1 2 Installation Installation conditions The following installing conditions must be satisfied to assure the normal operations of the machine 1 Environment 1 Keep the machine away from direct sunlight and avoid instal lation near ...

Page 17: ...an unstable surface To assure the proper operations install on a level surface 5 Install in a well ventilated place 6 Avoid installation where there is inflammable gases or am monium gases Installation near a diazonium copier may degrade copy quality and cause malfunctions 7 Install near a power outlet 2 Space around the machine Allow a space of about 15 cm 6 inches between the rear side of the ma...

Page 18: ...emove the No 2 No 3 mirror unit fixing screw 1 pc on the left side of the copier 2 Unlock the No 4 No 5 mirror unit Remove the No 4 No 5 mirror unit fixing screws 2 pcs on the right side of the copier In the case of SF 2314 2414 2514 with SF MF14 Optional equipped Open the paper feed tray on the right side of the copier Remove the No 4 No 5 mirror unit fixing screws 2 pcs Then close the paper feed...

Page 19: ...he copier 5 Remove the developer tank Slightly open the pawl which is fixing the developing unit and the developer tank with a screw driver and pull out the developer tank 6 Supply developer Supply a bag of developer to the developer supply port of the developing unit At that time move the bag of developer to supply developer even ly 7 Install the developer tank Insert the developer tank to the de...

Page 20: ...er cartridge to the original position 4 Close the front cabinet 5 Toner density sensor level check 1 Turn on the power switch of the copier 2 Adjust the developer level a Perform the key operations of simulation 25 sub 2 With the above key operations simulation 25 is performed and the developer is stirred for 3 minutes b After stirring the developer for 3 minutes the toner density level is read by...

Page 21: ...lled 2 Lock the unit with the mirror unit fixing screw The hole in the left cabinet 2 No 4 no 5 mirror unit Mirror base C lock 1 Perform locking with the unit at its home position and with the external fitting installed 2 Lock the unit with two mirror unit fixing screws The hole in the right cabinet SF 2314 2414 2514 with SF MF14 Optional equipped 1 Turn off the power at the 64 position Perform lo...

Page 22: ...rocedure should always be performed by two people 2 Remove the paper tray from the main copier unit 1 While lifting up slightly gently pull out on the paper tray until it stops 2 Then lift up on the paper tray with both hands and remove it 3 Open the upper unit of the main copier unit 1 Press the release buttons on the left and right sides of the main copier unit s front cover then open the front ...

Page 23: ...eder unit Installation Manual 1 Open the upper unit of the main copier unit 1 Press the release buttons on the left and right sides of the main copier unit s front cover then open the front cover 2 Push the upper half release lever green to the right and down then gently open the upper unit 2 Release the lock for the manual bypass unit and remove the manual bypass unit 1 Release the manual bypass ...

Page 24: ...o place to in stall it At this time to be sure that the multi bypass feeder unit is securely installed push down once more on the fourcorners of the unit If it has not been securely installed CH may appear in the COPIES MADE display when the power is turned on 2 Close the upper unit of the main copier unit Multi bypass feeder unit Rock claw latch Positioning pins Rock claw latch Positioning pins M...

Page 25: ...sette module SF CM14 250 sheets can be added Tray paper feed operation The cassette paper feed clutch CPFC turns on the paper feed roller shaft the paper feed roller and the takeup roller rotate At the same time the roller release arm is lowered by the limiter spring As a result the takeup roller falls by its own weight to reach the paper surface performing the paper feed operation When the CPCF t...

Page 26: ...nd negative respectively Since developer will deteriorate to degrade copy quality it should be replaced regularly 2 Two component magnetic brush development The rotatable non magnetic sleeve is provided over the magnet roller and is rotated Carrier forms a magnetic brush on the sleeve surface by magnetic force to attach toner onto the electrostatic image on the photoconduc tor drum 3 Developing bi...

Page 27: ...o 1 mirror 4 No 2 mirror 5 No 3 mirror 6 Lens 7 No 4 mirror 8 No 5 mirror 9 No 6 mirror F No 2 No 3 mirror base unit G Copy lamp unit H No 4 No 5 mirror base unit I Mirror motor J Lens No 4 No 5 mirror base drive motor K Lens home position sensor L Mirror home position sensor M Auto exposure sensor 1 Original table The original table is fixed and originals are set to the left frame side as the ref...

Page 28: ...ror base drive wire This wire is used to transmit the drive power of the mirror motor to the copy lamp unit and the No 2 3 mirror base to scan the mirror base 18 Lens drive motor This is a stepping motor which is used to move the lens and the No 4 5 mirror base 19 AE sensor The original density is detected with the intensity of the copy lamp light reflected from the original The measurement area i...

Page 29: ...py lamp voltage of 67 7V 135 4V at power ON This value is checked with sim 44 02 The mirror base scan speed mirror motor rpm is changed to zoom Copy paper feed direction The lens and the mirror are moved to zoom The mirror scan speed is changed to zoom Mirror scan speed Drum rotating speed Mirror scan speed Enlargement Original The lens and the mirror are move to zoom Reduction 80 70 60 50 V EX1 2...

Page 30: ...n Separation Separation corona unit High voltage unit Transfer charger High voltage unit Charging Discharging Cleaning Transfer Drum upper image paper synchronization Development Exposure Exposure Blank lamp Original Copy lamp Mirror lens High voltage unit Toner Developer Resist roller Paper feed roller Transportroller Manual paper feed Paper cassette Image forming process Paper transport path Mai...

Page 31: ...gative charges are neutralized each other in the aluminum layer and on the OPC drum surface As a result the OPC drum surface potential becomes 20V 30V By performing step 1 Charging and step 2 Discharging the photoconductor itself is initialized to stabilize the drum surface poten tial Main corona unit Blank lamp Cleaning blade Discharge lamp Seperation pawl Seperation corona unit Transfer corona u...

Page 32: ...nsity to the OPC drum Positive or negative charges are generated in the CGL of the OPC drum where lights are radiated Negative charges generated in the CGL move towards the positive charges in the aluminum layer generated in step 3 While the positive charges in the CGL move towards the negative charges on the CPU drum surface generated in step 3 Therefore positive charges and negative charges are ...

Page 33: ...after exposure Main corona unit Blank lamp Cleaning blade Discharge lamp Seperation pawl Seperation corona unit Transfer corona unit Resist roller MG roller Developer unit CTL CGL OPC drum CTL CGL OPC drum Low intensity in the area corre sponding to the darker density portion of the document Medium intensity in the area corre sponding to the medium density portion of the document HIgh intensity in...

Page 34: ...copy paper potential to the same level as the drum surface potential The attraction be tween the copy paper and the drum is weakened by this allowing separation of the copy paper by its own extending force If the copy paper is not separated by the separation charger it is separated by the separation pawl mechanically Main corona unit Blank lamp Cleaning blade Discharge lamp Seperation pawl Seperat...

Page 35: ...uminum layer while the positive charges in the CGL move towards the residual negative charges on the OPC drum surface Therefore the positive and the negative charges are neutralized in the aluminum layer and on the OPC drum surface removing the residual charges on the OPC drum surface As a result the OPC drum surface potential becomes 20V 30V 4 Transit of photoconductor drum surface potential CGL ...

Page 36: ...the reduction in the photo sensitivity of the photoconductor drum to correct it The drum rotating time from installation of a new photoconductor drum is counted by the timer and the copy lamp voltage is corrected in every mode Refer to Fig 3 The correction is performed within the range of the max supply volt age of the copy lamp The rotating time of the photoconductor drum can be checked with Simu...

Page 37: ... after the copy cycle after turning on the power or after the specified time of rotation of the photoconductor drum Correction operation The same operation as the initializing is performed to change the copy lamp voltage until the AE sensor output level reaches the same level as the reference value performing the correction The copy lamp voltage is revised to a new value at every correction and th...

Page 38: ... feed Paper transport Synchronization SM rotation SPFS ON SPPD ON SRRC ON Exposure SPOD ON Original exit SPF side PSW MM CPFC1 TRC RRC PPD POD SM SPFS SRRC SPPD SPOD Timing chart The image lead position is adjusted with Sim 50 1 Original takeup roller 2 SPFD 3 SPF PS gate 4 Original paper feed roller 5 Document feed reverse roller 6 SPPD actuator 7 SPF PS roller upper 8 SPF PS roller lower 9 SPPD ...

Page 39: ...ower section 1 1 Paper feed unit 1 Open the front cover and open the body Release the right and the left lock levers and pull out the manual paper feed unit 2 Disconnect the CN B connector of the lower PWB remove the paper feed unit fixing screws 4 pcs and lift the paper feed unit to remove 1 2 Paper feed roller ass y removal 1 Disconnect the connector of the magnetic clutch in the rear frame side...

Page 40: ...e Note for assembly 2 Attach the paper feed roller ass y so that the paper feed roller clutch faces the lower frame When attaching the paper feed unit insert it in the base unit hole of the copier 1 3 Separation roller 1 Remove the paper feed unit and remove the separation roller 1 4 Takeup roller paper feed roller 1 Remove the paper feed roller ass y and remove the takeup roller 2 Remove the roll...

Page 41: ...er frame side Remove the spring in the rear frame side Disconnect the CN E connector in the lower frame PWB unit Slide the resist roller ass y to the rear frame side and remove it upwards 3 Remove the clutch and the gear as shown below Note for assembly 1 When assembling attach the positioning pin of the resist roller clutch in the direc tion of paper exit Note for assembly 2 When assembling the r...

Page 42: ...awl from the positioning hole in the paper exit side and slide it in the direction of paper feed to remove 1 8 Lower unit PWB 1 Open the body up and remove the rear lower cabinet 2 Remove the connector the PWB fixing screw 1 pc and the CN F fixing screws 2 pcs Slide the lower unit PWB to the front frame side and remove it upwards 1 9 Cassette paper empty detector CPED1 1 Remove the rear lower cabi...

Page 43: ...mes and the bearing Remove the manual roller ass y together with the solenoid holder 3 Remove the manual feed takeup roller from the manual arm 4 Remove the manual arm and the E ring and remove the manual paper feed roller Note Gear 20T has a positioning pin When removing the manual arm be careful not to miss the positioning pin Note for assembly 1 The manual paper feed roller is provided with the...

Page 44: ...sert a long screwdriver into that port and remove the screw which is fixing the fuser cover 7 Remove the fuser cover in the direction of arrow A 8 Remove an E ring and two connectors 3 2 Heater lamp replacement 1 Remove the fuser cover fixing screw 1 pc and slide it to the front side and remove it 2 While pushing the projection of the Faston terminal connected to the thermostat remove the lead wir...

Page 45: ...unit so that the paper guide is in the lower side The separation pawl is in the upper side 3 Remove the tension spring hold the tip of the separation pawl and remove it from the supporting section and tilt it to remove For assembly reverse the disassembly procedures 3 5 Lower cleaning roller and lower heat roller replacement 1 Remove the fuser unit 2 Remove the CL roller springs 2 pcs which is fix...

Page 46: ...the scraper Note When attaching the scraper be careful not to deform it Also be careful to check that the scraper hook section is completely inserted into the paper exit paper guide 3 7 Thermistor thermostat removal Note for assembly Be sure to bring the thermistor center into contact with the heat roller Clean and remove foreign materials from the thermistor surface with alcohol Paper exit paper ...

Page 47: ...drive wire replacement Removal 1 Remove the manual paper feed unit the right upper cabinet the glass holder the table glass and the operation panel 2 Remove the fixing screws 2 pcs of the left upper cabinet and slide to the rear frame side to remove the cabinet 3 Loosen the fixing screw of the copy lamp unit wire fixing plate and remove the wire from the unit 4 Remove the tension spring 7 in the f...

Page 48: ...move the shaft and the carriage unit Installation 1 Pass the lens drive shaft through the carriage unit and set the shaft to the shaft support section of the base plate 2 Fix the shaft mounting plate in the paper feed side 3 Store the lens unit projection in the lens guide rail 4 Set the lens drive wire on the carriage unit 5 Align the No 4 5 mirror zoom cam and the carriage unit to the normal cop...

Page 49: ... drive motor fixing screws 2 pcs and remove the No 4 5 mirror unit from the mounting section square hole in the base plate For assembly reverse the disassembly procedures 4 6 Optical unit removal 1 Remove the drum unit and the developer unit 2 Remove the right cabinet the left cabinet the operation panel the medium cabinet and the rear cabinet 3 Remove three connectors A from the sensors in the re...

Page 50: ...the upper frame and the screw and the connector in the rear frame then remove the main PWB 6 Remove the connector the manual paper feed unit the right upper cabinet the table glass and the dark box cover Remove the fixing screw from the above and remove the AE sensor towards the front frame side For assembly reverse the disassembly procedures 4 8 Light adjustment plate temperature fuse removal 1 R...

Page 51: ...ove the SPF upper cover 3 Remove two fixing screws of paper exit reverse paper guide 4 Remove the SPF motor ass y fixing screws 4 pcs and the CN C connector 4 pin of the SPF control PWB Then remove the SPF motor ass y Reference The SPF motor can be removed by removing two screws from the SPF motor ass y A 6 13 ...

Page 52: ... the gear and the paper feed roller can be removed 4 Since the takeup roller is of the insertion type remove it from the grip side For assembly reverse the disassembly procedure Note The paper feed roller is provided with the one way clutch Be sure to attach so that the one way clutch is in the front frame side 5 3 Reverse roller ass y replacement 1 For replacement of the reverse roller the SPF un...

Page 53: ...control PWB replacement 1 Remove the SPF upper cover as shown in 5 1 1 2 2 Remove three connectors and two screws from the SPF control PWB and remove the PWB 5 5 Clutch solenoid removal 5 6 Sensor removal 6 15 ...

Page 54: ...crew and remove the drum unit 7 Developer section 7 1 Developer unit removal 1 Open the front cover 2 While pressing down the release lever open the toner cartridge slowly and remove it 3 Loosen the step screw A 4 Pull out the developer unit 7 2 Developer cartridge removal 1 Place the magnet roller of the developer unit on the box to protect it A B A 6 16 ...

Page 55: ...and separate the toner cartridge section 2 Remove two screws C and remove the motor 7 4 Toner density sensor 8 Operation panel section medium cabinet 1 Open the front cabinet 2 Remove three screws A and two harnesses from the operation panel 3 Remove the operation panel unit 4 When removing the medium cabinet first remove the process unit and the developer unit then remove four screws B and remove...

Page 56: ...k sheet and remove the ozone filter 9 2 Optical unit SPF unit cooling fan removal 1 Remove the rear cabinet 2 Remove as shown below 9 3 Ventilation fan motor 1 Remove the optical unit For details refer to 4 Optical unit removal 2 As shown in the figure below remove the ventilation fan motor 6 18 ...

Page 57: ...rear cabinet 2 Remove the transport clutch as shown in the figure below 9 5 Paper exit sensor 1 Open the front panel 2 Move the open close lever to the right and open the upper unit slowly 3 Remove the sensor as shown in the figure below 6 19 ...

Page 58: ...ment table 4 Others 1 Transfer charger wire installation 2 DV bias adjustment 3 Separation charger output adjustment 1 Developer section 1 MG roller main pole position adjustment If the MG roller main pole position is improper the following troubles may occur Insufficient copy density Toner splash 1 Remove the DV unit from the body and remove the DV cover 2 Tie a string to a needle as shown in the...

Page 59: ...ng screw 3 Insert a 0 625mm thickness gauge into the clearance between the MG roller and the DV doctor in the range of 30mm width under the DV doctor fixing screw 4 Press the DV doctor in the arrow direction and tighten the DV doctor fixing screw 5 Check that the clearance of the DV doctor is 0 625 0 03mm in the range of 30mm width under the DV doctor fixing screw Note When adjusting be careful no...

Page 60: ...tarted midway in the flowchart only if all the previous items have been properly adjusted 3 If the content of an adjustment item in the flowchart is changed all the following items must be adjusted accordingly Any adjustment item is based on the previous adjustment items and relates to the following adjustment items 4 Sim in the flowchart stands for Simulation START Adjust the lens unit inclinatio...

Page 61: ...ch other NO NO YES 2 NO 3 Use the test chart UKOG 0089CSZZ or the resolution chart to make a 100 copy on B4 or 8 1 2 x 14 paper so that the resolution patterns are copied at the center and the four corners Check the resolution at the center and the four corners Is the center resolution more than 5 0 lines mm and are the corner resolutions more than 4 5 lines mm Set the scale along the document ref...

Page 62: ...fference is within the specified range Make a 100 copy with Sim50 1 5 Measure the distance between the copy image lead edge and the copy paper lead edge 0 1 0 mm Change the Sim50 1 set value B so that the difference is within the specified range SF 2414 2514 NO Is the SPF installed Use the SPF to make a 100 copy Measure the distance L3 between the copy image lead edge and the copy paper lead edge ...

Page 63: ...ted by making a copy and adjusting parallelism of the mirror For that purpose this adjustment must have been properly per formed IV Cases when the adjustment is required 1 When the lens or the lens unit is disassembled or its part is replaced 2 When the copy image is distorted as follows because of different copy magnification ratios in different sections V Necessary tool Screwdriver VI Adjustment...

Page 64: ...on by setting the optical axis of the copier and that of the No 4 5 mirror unit in parallel with each other III Note The copy image distortion adjustment is completed by making a copy and adjusting the parallelism of No 1 and No 2 scanner units For that purpose this adjustment must have been properly per formed IV Cases when the adjustment is required 1 When No 4 5 mirror unit is disassembled or i...

Page 65: ...t the cam positioning hole is fit with the reference hole in the optical unit frame 7 Pass the M4 x 20 screw through the No 4 5 mirror unit drive cam positioning hole and fix the screw to the frame without turning the cam 8 Tighten the cam fixing screw to fix the No 4 5 mirror unit drive cam to the lens unit drive gear without moving the lens unit drive gear 9 Remove the screw which was fixed to t...

Page 66: ...art for distortion adjustment Make a chart shown below by yourself Draw a rectangle on a paper B4 or 8 1 2 x 14 as shown below Be sure to make four right angles VI Adjustment procedure 1 Remove the right upper side cabinet and the document refer ence plate 2 Remove the document glass 3 Loosen the fixing screw of the No 1 scanner unit wire 4 Manually turn the scanner unit drive gear to bring No 2 s...

Page 67: ...ing plate and insert the 1 0 mm spacer be tween No 1 scanner unit and upper R frame bring No 1 scanner unit into contact with upper R frame and fix it to the scanner unit drive wire Procedures 1 to 8 are for adjustment of mechanical horizontal parallelism No 1 scanner unit and No 2 scanner unit are fixed to the specified positions and the mechanical horizontal parallelism of No 2 scanner unit is a...

Page 68: ...he height of No 4 5 mirror unit in the front frame side The right left balance adjustment is performed by changing the right left balance of No 2 scanner unit rail The right left balance adjustment must be performed in advance to the overall adjustment II Purpose The purpose of this adjustment is to set parallelism of the verti cal optical axis of the copier and that of No 4 5 mirror unit and No 2...

Page 69: ...eft balance of image distortion is proper 4 Change the height of the roller in No 4 5 mirror unit front frame side to adjust the vertical image distortion If the copy image is tilting as shown in sample X below lower No 4 5 mirror unit If it is tilting as shown in sample Y below lift No 4 5 mirror unit 5 Make a copy to check the vertical image distortion If the four angles are right angles the adj...

Page 70: ...nter position adjustment at the docu ment reference position 2 Make a normal copy 100 on A4 or 8 1 2 x 11 paper 3 Check that the image of the line is at the center of the paper Standard 0 1 5mm 4 If the image of the line is not at the center of the paper perform the following procedure 5 Remove the right side cabinet and the document reference plate 6 Remove the document glass 7 Remove the optical...

Page 71: ...ocedures 1 Set the test chart on the document table 2 Make a normal copy 100 on A4 or 8 1 2 x 11 paper 3 Check that resolutions at the copy paper center and the four angles are as shown in the table below Standard Unit lines mm Copy center Corner Normal 100 5 0 4 5 Enlargement 5 0 4 5 Reduction 4 5 3 6 If any resolution is out of the above specifications perform the following procedures 4 Remove t...

Page 72: ...erformed properly Image distortion adjustment Focus adjustment Firstly adjust the vertical magnification ratio in the normal 100 copy mode then adjust in the zoom copy mode Never reverse the sequence The vertical magnification ratio adjustment in the zoom copy mode must be performed when the vertical magnification ratio in the normal 100 copy mode is proper but the copy size is not proper in the z...

Page 73: ...atio is within the specified range 129 0 9 If it is out of the specified range perform the following proce dures 7 Execute simulations 26 8 C 0 0 C 26 CB 8 CB The set vertical copy magnification ratio in the zoom copy mode will be displayed in the COPIES SELECTED display 8 Enter a new vertical copy magnification ratio with the numeric key and press PRINT button The above procedure changes the lens...

Page 74: ...precise adjustment 2 Set the copy magnification ratio to 100 3 Make a copy on A3 or 11 x 17 paper 4 Measure the length of the copied scale image 5 Calculate the horizontal copy magnification ratio Horizontal copy magnification ratio Copy image size Original size x 100 6 Check that the actual copy magnification ratio is within the specified range 100 0 8 If it is out of the specified range perform ...

Page 75: ...n the copy magnification ratio is set to a larger value the actual copy magnification ratio becomes larger When the copy magnification ratio is set to a smaller value the actual copy magnification ratio becomes smaller Repeat procedures 1 to 8 until the horizontal copy mag nification ratio in the SPF copy mode is within the specified range VII Troubles caused by improper adjustment 7 Uniformity ad...

Page 76: ...hanged In the models which have no zoom copy functions however the lead edge position of an image on the photoconductor for the lead edge position of a document on the document table is not changed The relative position of the paper is changed at OFF timing of the scanner home position sensor after starting scanning to ad just the copy image position on the paper On the SF 2514 to adjust the copy ...

Page 77: ... also changed When the set value is changed by 1 the position of the copy image on the copy paper is changed by about 0 123 mm When the set value is made greater the copy image position for the copy paper moves backward When the set value is made greater the copy image position for the copy paper moves for ward Adjustment value C SF 2514 only Corresponds to the time interval from the SPF resist ro...

Page 78: ...per lead edge to the copy image lead edge 8 Enter the measure values in procedure 7 into the formula below to calculate adjustment value A and adjustment value B Not required for the SF 2314 A 8 2423 x L1 L2 B 16 0568 x L2 7 9661 x L1 9 Set the adjustment values obtained in procedure 8 Not required for the SF 2314 10 Execute simulations 50 1 to make several copies at each of 129 and 64 Not require...

Page 79: ...t procedure 13 until it is within the above range For the SF 2314 change adjustment value A 14 Set documents in the SPF and make several copies at 100 with simulations 50 1 15 Measure the distance from the paper led edge to the copy image lead edge of each copy paper and calculate the average value L3 Average distance mm from the copy paper lead edge to the copy image lead edge Only in the SPF mod...

Page 80: ...on the fuser section pawl by obtaining the max effective copy area and the proper void area III Note If the proper void area is not obtained the separation ability in the photoconductor section may be degraded and dirt on the fuser section pawl may be increased Before performing this adjustment the following adjustment must have been completed If not this adjustment cannot be performed properly Ad...

Page 81: ...he void area be comes greater and vise versa 13 Make a copy in the SPF mode and check that the void area is within the specified range Standard 1 3 mm If the void area is outside the specified range check adjust ment value C of simulations 50 1 or check the SPF unit mechanism section End edge void area adjustment Cassette paper feed mode 1 Set a scale and A4 or 8 1 2 x 11 paper on the document tab...

Page 82: ...d area is within the specified range Standard 1 3 mm If the void area is outside the specified range change the set value of simulations 45 and repeat procedures 9 to 12 When the set value is changed by 1 the void area is changed by about 0 123 mm When the set value is made greater the void area be comes greater and vise versa End edge void area adjustment Paper feed tray mode 1 Press the paper fe...

Page 83: ...g five mode Copy density adjustment mode Exposure level Sim No Original table copy mode Normal mode Non toner save mode 1 5 46 1 Toner save mode 1 5 Photo mode Non toner save mode 1 5 Auto mode Non toner save mode 1 5 Toner save mode 1 5 SPF copy mode Normal mode Non toner save mode Set to the copy mode in the original table copy mode 51 6 Toner save mode Photo mode Non toner save mode Auto mode N...

Page 84: ... copy mode Press the copy mode select key to light the photo copy mode lamp Check the gray scale copy to insure that 7 is slightly copied and 6 is not copied When the copy density is too dark increase the copy lamp voltage level When the copy density is too light decrease the copy lamp volt age level Enter a new set value of the copy lamp voltage level with the numeric keys and press the print but...

Page 85: ...riginal table copy mode copy density adjustment are shifted together When therefore the original copy mode copy density is changed this adjustment should be also performed 1 Execute Simulation 51 6 The SPF copy mode copy density level is displayed on the copy quantity display 2 Adjust the set value so that the copy density becomes the same as the original copy mode copy density level Compare in th...

Page 86: ... Photo N TS P 1 5 Auto N TS A 1 5 TS A P 1 5 1 10 W 2 3 4 5 6 7 8 9 Not copied Slightly copied 1 10 W 2 3 4 5 6 7 8 9 Not copied Copied 1 10 W 2 3 4 5 6 7 8 9 Not copied Slightly copied 1 10 W 2 3 4 5 6 7 8 9 Not copied Copied 1 10 W 2 3 4 5 6 7 8 9 Not copied Slightly copied 1 10 W 2 3 4 5 6 7 8 9 Not copied Copied 1 10 W 2 3 4 5 6 7 8 9 Not copied Slightly copied 1 10 W 2 3 4 5 6 7 8 9 Not copie...

Page 87: ... and adjust the separation corona voltage to 3 5 0 35v by rotates VR1 on the lower unit control PWB SHVG turns on 30 sec 3 How to adjust the developing bias voltage 1 Install the developer unit and OPC drum unit into the main body 2 Set the digital multimeter range to DC 500V 3 Connect the digital multimeter to the developing bias output ter minal on the lower unit control PWB and chassis GND 4 Ex...

Page 88: ... number is displayed on the copy quantity display Is there a sub code YES NO Press the print key Press the print key 00 blinks on the copy quantity display Ready for entry of the sub code Enter the sub code with numeric keys Press the print key Is the test command for operation check Operations according to the simulations are performed The set adjustment value or the counter value is displayed on...

Page 89: ... 8 9 Process 44 1 Correction mode setting Counter Maintenance counter 20 1 Counter value reset 21 1 Maintenance cycle setting 22 2 Maintenance cycle display 22 1 Counter value display Drum counter 24 7 Counter value reset 22 12 Counter value display Developer counter 42 1 Counter value reset 22 6 Counter value display Total counter 0 Key Does not enter the simulation mode Counter value display Ope...

Page 90: ...it 26 8 Used to adjust the copy magnification ratio in zoom copy The lens shift amount in zoom copy is changed to provide suitable magnifica tion ratio There is a slight variation in each lens focal distance If the lenses are shifted in a same amount in zoom copy suitable magnification ratio may not be obtained To correct this therefore each lens is shifted according to its focal distance The lens...

Page 91: ... to the copy mode in the original table copy mode 51 6 Toner save mode Photo mode Non toner save mode Auto mode Non toner save mode Toner save mode Copy density level exposure level copy lamp applying voltage to operation panel density display level In the manual copy mode and the photo copy mode Set point A exposure level copy lamp applying voltage at copy density level 1 and point B exposure lev...

Page 92: ...press the print button and the value will be stored in the main PWB RAM It is required to make a copy and adjust However the rough input value can be obtained from the following formula Input value Current set value Magnification ratio correction rate 10 2 Used to adjust the horizontal magnification ratio Lead to Trail The adjustment is performed by changing the scanning speed of the scanner mirro...

Page 93: ... edge and copy image mm Only in the SPF model A 8 2423 x L1 L2 It corresponds to the time required for the scanner to reach the document lead edge image position from starting scanning It is in other word the value used to determine the optical position of the document lead edge reference position of the document table and must be fitted to the edge section of the document reference plate If this ...

Page 94: ...ve mode manual and auto copy mode 7 Used to check the separation charger voltage 7 30 The separation charger unit is turned on for 30 sec 9 Used to check the voltage of the main charger the transfer charger and the separation charger The main charger unit the transfer charger unit and the separation charger unit are turned ON for 30 sec SPF unit 48 3 Used to adjust the horizontal magnification rat...

Page 95: ...is displayed Enter the code number corresponding to the desired operation mode and press the print button and the operation mode will be set Code number Operation mode Operation 1 Manual When the print button is pressed copying is started 0 Auto When copy paper is set coping is automatically started Fuser unit 26 13 Used to set the operation mode of the main motor in warming up There are two opera...

Page 96: ... correction control Set the total of codes of above modes Factory setting is 16 Counter Copy count 22 1 Used to check the maintenance count value Operation procedure The maintenance count value is displayed dividedly by two digits three times on the COPIES SELECTED display There is a pause between any two displays After the longest pause the top two digits are displayed 2 Used to check the set mai...

Page 97: ...o check the opera tions of the sensors Sensor name Display lamp Option tray cover open close detector CSDSW Toner empty lamp Option tray paper feed sensor CSPPD Jam lamp Option tray open close detector CPED2 Upper tray lamp Option tray detector OCSD Lower tray lamp Mult manual paper feed unit defects SPF Jam lamp Single manual paper feed unit defects SPF lamp Optical unit 1 1 Used to check the ope...

Page 98: ...Used to check the operation of the SPF paper feed clutch and its control circuit Operation procedure The SPF paper feed clutch turns on for 10 sec 5 Used to check the operation of the SPF resist clutch and its control circuit Operation procedure The SPF resist clutch turns on for 10 sec Operation unit 5 1 Used to check the operations of the lamps on the operations panel and their control circuits ...

Page 99: ...to check the operation of the toner density sensor Operation procedure The main motor rotates and the units connected to the main motor operate accordingly The output level of the toner density sensor is displayed on the COPIES SELECTED display Other 6 1 Used to check that the machine conforms to EnergyStar or not This simulation is effective only in Japan SEC and SECL Operation check Gereral Agin...

Page 100: ...rogram For details refer to the descriptions on the user program For cancellation of the auto off mode however the significance of International EnergyStar is described on the Operation manual to guide the user not to cancel the function as far as possible Machine state A Warmup B Ready C Copying Energy saving mode Auto start from D E D Preheating 1 E Auto off mode F Resetting G Reversed Reset Ope...

Page 101: ...the reservation is canceled with the clear key 2 User simulation prcedure Simulation procedure State Paper jam developer replacement toner supply warning LED Copy quantity display Print LED 1 Press the paper feed section select key for more than 5 sec User simulation input allowed Blink OFF 2 Enter a code number with 10 key Simulation code selection Blink ON 3 Press the COPY button Simulation code...

Page 102: ... conditions without operation with program 5 ES conforming area Program P code Selection code Set content Factory setting Auto clear passing time setting 1 0 NO 1 30 sec 2 60 sec 3 90 sec 4 120 sec 2 60 sec Preheat mode setting and passing time setting 2 0 NO 1 30 sec 2 60 sec 3 90 sec 4 120 sec 0 NO Auto off mode passing time setting 3 1 30 min 2 60 min 3 90 min 4 120 min 5 240 min 0 NO Since P c...

Page 103: ...play After repairing the trouble section clear the self diag display accord ing to the table below Clearing the self diag display Self diag display Display clearing procedure L1 L3 L4 L5 L8 Turn off on the power H3 H4 Execute simulation 14 U2 Execute simulation 16 CH PC When the trouble is cancelled the display is cleared YES NO A trouble occurs The abnormalality is detected by sensors and detecto...

Page 104: ... The scanner motor drive pulses required for the scanner unit to return are shifted more than 50 pulses for the drive pulses required for feeding The corresponding distance is 10mm or more 2 The scanner motor drive pulses required for the scanner unit to return are within 50 pulses for the drive pulses required to feed 3 The scanner unit does not return Or through it returns the scanner unit does ...

Page 105: ... movement the lens home position sensor is not ON when in enlargement copying or not OFF when in reduction copying Cause 1 Lens motor trouble 2 Main control circuit trouble 3 Lens motor rotation sensor and its input circuit main control PWB trouble 4 Lens motor drive mechanism trouble 5 An overload on lens motor drive mechanism Remedy Use simulations 1 3 or 1 4 to check the following items A Check...

Page 106: ...emperature does not reach the specified temperature within 60 sec after starting warming up Cause 1 Thermistor and its input circuit main control circuit trouble disconnection 2 Heater lamp trouble 3 Heater lamp control signal and its control circuit trouble The heater lamp remains ON Remedy Check the following items 1 Check the thermistor and its input circuit main control PWB for disconnection o...

Page 107: ...g EL Content Toner density initial setting trouble overtoner 8 6 Detail When setting the toner density initial level with simulation 25 2 the toner density sensor output is above the specified voltage 3 49V Cause 1 Toner sensor trouble 2 Toner sensor input circuit trouble main control circuit 3 Toner motor and its control circuit trouble Remedy Use simulations 25 2 to check the following items 1 T...

Page 108: ...ner motor and its control circuit main PWB 3 Toner supply section 4 Toner sensor and its control circuit main PWB Toner empty Blink Content Toner concentration fall Copy stop 8 12 Detail 1 No toner in the toner box 2 Toner density falls below the specified level Cause 1 No toner in the toner box 2 Toner motor and its control circuit main PWB trouble 3 Toner supply section clogging 4 Toner sensor a...

Page 109: ... detector and its input circuit main PWB 3 SPF section paper feed and transport clutches and their control circuit main PWB 4 SPF section paper feed roller transport roller 5 Document paper feed and transport drive system motor gear etc 6 Set value of simulation 51 7 5 Conditions for the JAM display 1 Paper feed section 1 The JAM lamp lights up if 9 PPD does not turn on within about 1 5 sec after ...

Page 110: ...a recording sheet to memorize the newest data when servicing in order to cope with the above situations This improves efficiency in servicing and realizes quick recovery 3 Remedies Perform the procedures according to the following flowcharts Sim in the flowchart means Simulation Memory trouble Procedures for memory trouble main control PWB replacement and main control PWB EEPROM replacement NO YES...

Page 111: ...ecorded Use Sim 26 8 to set the vertical magnification ratio adjustment value in zoom copying Is the adjustment value of contact pressur between the main body resist roller and the copy paper recorded Use Sim 51 2 to set the adjustment value of contact pressure between the main body resist roller and the copy paper 2 Make a copy and adjust the copy density Sim 46 1 51 6 Make a copy and adjust the ...

Page 112: ...e Make a copy and adjust the SPF mode horizontal copy magnification ratio Is the adjustment value of contact pressure between the SPF resist roller and the document recorded Use Sim 51 2 to set the adjuatment value of contact pressure between the SPF resist roller and the document Is the SPF resist roller ON timing adjustment value recorded Use Sim 50 1 to set the SPF resist roller ON timing adjus...

Page 113: ...mode 47 The AE sensor and the optical section characteristics memory data for the change in the copy lamp application voltage 48 1 The vertical copy magnification ratio adjustment value 2 The horizontal copy magnification ratio adjustment value when the document table is used 50 1 The adjustment value of copy image position on the copy paper SEt value A Set value B Set value C SPF unit 48 3 The ho...

Page 114: ...ensity level 1 Not toner save mode Photo copy mode density level 5 Not toner save mode 47 The AE sensor and the optical section characteristics memory data for the change in the copy lamp application voltage 7 26 48 1 50 The vertical copy magnification ratio adjustment value 7 15 2 50 The horizontal copy magnification ratio adjustment value when the document table is used 7 16 50 1 The adjustment ...

Page 115: ...0K 200K 240K Developing Developer Toner supply Seal Process peripheral OPC drum Main charger saw tooth grid separation pawl Transfer charger wire F F F Separation plate half etching Transfer charger case F F F Fusing Fusing lower CL roller Fusing upper heat roller F F F Fusing bearing F F F Fusing gear F F F Fusing lower heat roller F F F Thermistor F F F F F F Fusing upper separation pawl F F F F...

Page 116: ...SPS POD MPFS MPFC CPFC1 PWD PPD CPED1 CPED2 CSDSW CSPPD CPED2 LOWER UNIT PWB BIAS SHV HIGH VLOTAGE PWB MHV THV GRID CRU PWB DC POWER SUPPLY CIRCUIT HL CL AC CIRCUIT PWB INTER LOCK SWITCH AC POWER POWER UNITS MAIN SWITCH DRY HEATER PERSONAL COUNTER OPERATION PWB MAIN PWB CPU MEMORY DRIVER 6 3 6 6 2 6 6 6 6 6 6 2 3 6 2 Power ON JAM RPL ON PSW ON RPL ON Initial setting Memory transfer Trouble Door op...

Page 117: ...ge lamp Transport clutch Separation solenoid Multi bypass paper feed clutch solenoid SPF motor control SPF paper feed transport clutch Power switch Thermistor Toner sensor Developer color detection Main PWB destination detection SPF paper sensor DC power section Toner motor Thermistor IC104 IC104 IC108 1 P70 AN0 2 P67 TB2IN 3 P66 TB1IN 4 P65 TB0IN 5 P64 INT2 6 P63 INT1 7 P62 INT0 8 P61 TA4IN 9 P60...

Page 118: ...ffer Q0 8 Command cue buffer Q1 8 Command cue buffer Q2 8 Incrementor 24 Program address register PA 24 Data address register DA 24 Incrementor decrementor 24 Program counter PC 16 Program bank register PG 8 Data bank register DT 8 Input buffer register IB 16 Processor status register PS 11 Direct page register DPR 16 Stack pointer S 16 Index register Y 16 Index register X 16 Accumulator B 16 Accu...

Page 119: ...or control signal 25 P40 POD OUT H Paper exit detecting sinal 26 BYTE BYTE IN External data bus select signal L 16 bit H 8 bit 27 CNVss CNVSS IN H Processor mode selection 28 RESET RESET IN L Reset signal Reset at L 29 XIN XIN IN Clock IN 30 XOUT XOUT OUT Clock OUT 31 E E OUT Enable output 32 Vss Vss OUT Power GND 33 P33 PNC OUT Personal counter clock 34 P32 TRC OUT H Transport roller clutch 35 P3...

Page 120: ...nvertor reference voltage input 72 AVSS AVSS Analog Digital convertor ground pin 73 Vss Vss Power GND 74 P77 ANS IN Analog input signal SPF sensor input 75 P76 MBT IN Analog input signal Main PWB destination setting 76 P75 CLV IN Analog input signal Copy lamp control 77 P74 RTH IN Analog input signal Fusing thermistor 78 P73 Not used 79 P72 Not used 80 P71 TCSA IN Analog input signal Toner density...

Page 121: ...heater lamp lighting signal is not generated IC112 output 14 pin is normally HIGH Open state When the heat roller surface temperature is lower than the set temperature a Since the thermistor pin voltage is higher than the set level output signal HL from the CPU becomes HIGH b HL signal is passed through IC102 TR and Q110 to the solid state relay When therefore HL signal is LOW the internal triac t...

Page 122: ...nsor PWB which is com posed of the photo diode and the I V convertor circuit and the amplifier circuit on the control PWB Operation amplifier A performs I V conversion of the original density level minute current from the sensor Operation amplifier B amplifies the output of operation amplifier A to a suitable level for inputting to the CPU The amplifying level is automatically set by selecting the...

Page 123: ...cuit It is equipped with the delay circuit to provide delay time just by adding an external capacitor 2 Operation After td 30msec from when the voltage exceeds 4 25V after power rising the output becomes HIGH td is set by the external capacitor TMa TMb R208 47KJ R209 47KJ 2 9 1 5 5V IC104 TA7291S IN1 IN2 GND 6 8 7 3 M C102 10UF35V TMa TMb 24V I O 2 8 9 1 5 6 7 3 M REG GND Protection circuit Heat i...

Page 124: ...5kF R166 15kF 10 9 8 IC111C D103 1SS133 R167 15kF R161 10kJ C131 0 01µF R168 16kF R169 200kF R170 82kF R163 2 2kJ C132 1000PF T P C107 1µF 50V ZD106 HZS5B3 FWS CLV 2 4B 2 4C 24V 24V R171 3kJ 11 10 13 IC112D LM339 ZD103 HZS7A1 CLPWM Q107 DTC114YK 2 4C CLPWM 2 7C 5V1 R202 4 7kJ D102 1SS133 R173 1kJ T P C133 0 047µF Q108 2SC2411K R175 10kJ R174 1kJ T P T P Q109 DTA114YK R105 2 2kJ 1 2W I 15 5V2 Qb1 D...

Page 125: ...rmally short the DC level applied to the IC112 10 pin becomes higher than the reference voltage of 11 pin driving the 13 pin output to the GND level Therefore the lighting signal is not transmitted to R174 and later section and the lamp is not lighted By setting the reference voltage to a level not exceeding the rated voltage an abnormal lighting is avoided 1 When the AC input voltage becomes low ...

Page 126: ... of W0 Q25 W7 Q32 and KEY0 KEY2 With W0 signal at LOW GND and W1 W7 at HIGH open the level of KEY0 KEY2 is checked and H or L state of 4K 2K and 3K in the key matrix is judged to judge ON OFF For W1 W7 switching is made every 2 msec for judgement W0 W1 W2 W3 W4 W5 W6 W7 KEY0 KEY0 HIGH GND 2m sec 16m sec 4K ON 4K OFF KEY0 KEY1 KEY2 3K 2K 4K W0 Q25 LC7935 5V2 5V1 CPU 12 11 ...

Page 127: ...ng timing of the latch signal The retained data is outputted when STROBE signal becomes HIGH 5V VD CLK LATCH S IN OUT VD 5V VD 10V LED DATA CLK LATCH ENABLE S OUT BEO Main control circuit STROBE VD 5V DC power circuit VD 5V VD 10V DATA Sout CLK LATCH ENABLE GND 32 bit Shift Register 32 bit Latch Driver ON OFF Control Driver 01 032 VD GND 1 5V 5V 5V 1 2 3 4 Clock Data signal Latch signal Strobe sig...

Page 128: ...upplied to loads 1 Signal name and output voltage GND 0V VH 30 44V Separated into 24V and 32V supply in the main PWB VD 24V 35V Forms 5V supply in the main PWB FW Full wave rectification AC PWB unit DTB113ZS 5V1 RDL1 PEL MDL0 MDL1 Q1 Q2 F1 Q4 LC7935 GND MDL0 GND MDL1 GND FO 2m sec RDL1 ON PEL ON Cycle 4 msec 1 2 duty 10 14V FW VH CNE 1 F504 CNB 5 POWER TRANS CNA 3 F503 _ _ F505 CNB 6 CNB 1 CNB 2 R...

Page 129: ...01 DSS131 L 6 P GND ZD101 RD13EB1 ZD102 RD13EB1 C142 22000PF C143 22000PF C102 47uF 35V C145 22000PF POWER GND 5V1 5V1 5V1 CHK JP C146 22000PF C104 47uF 10V 1 2 3 IC101 MC7805CT C101 0 47uF 25V L 3 5V1 L 4 S GND C147 22000PF C105 4 7mF D126 RB411D 5V2 CHK JP 5V2 5V2 VH VD About 32V VH 5V VD 24V VB NPN transistor Zenor diode Three termonal regulator 12 14 ...

Page 130: ...llisesti asennettu Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin Hävitä käytetty paristo valmistajan ohjeiden mukaisesti French ATTENTION Il y a danger d explosion s il y a remplacement incorrect de la batterie Remplacer uniquement avec une batterie du même type ou d un type équivalent recommandé par le constructeur Mettre au rebut les batteries usagées conformément aux instru...

Page 131: ... in a retrieval system or transmitted In any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher SHARP CORPORATION Printing Reprographic Systems Group Quality Reliability Control Center Yamatokoriyama Nara 639 11 Japan 1997 September Printed in Japan S ...

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