Toshiba DP1600 Page 207 Service Manual Download

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1600/2000/2500 FUSER UNIT/EXIT UNIT

14 - 6

December 2000 © TOSHIBA TEC

14.6 Heater Control Circuit

14.6.1 Temperature detection section

This section detects the surface temperature of the heat roller in the fuser unit by means of two ther-

mistors (heater thermistor 1 and 2) and turns ON and OFF the heater lamp to keep the fusing temperature

fixed.

• The thermistor has the property of reducing its resistive value at high temperature. Therefore, the

heater control circuit detects that the higher the thermistor resistive value the lower the heat roller

temperature, and that the lower the resistive value the higher the temperature. The CPU controls turn-

ing ON and OFF the heat roller so that the detected temperature is within the set range of fusing

temperatures. Finding the detected temperature abnormal, the CPU performs error processing to stop

the supply of power to the heat roller.

• If the heat roller temperature abnormally rises due to short-circuiting of the triac or temperature control

disabled by breaking of the thermistor, etc., the thermostat cuts off the power supply line to the heater

lamp to prevent the fuser unit from being damaged.

The following abnormal conditions are detected:

(1) Thermistor abnormal or heater lamp broken at warm-up time

SERVICE CALL (C41) is displayed if the heat roller temperature is below 40°C (the output voltage of

heater thermistor 1 is 0.1599V) continuously for 500 milliseconds, 25 seconds immediately after the

start of warming-up immediately following the power ON or the start of warming-up at the time of

restoration from the Super Power Save mode.

(2) Thermistor abnormal after error diagnosis during warming-up

SERVICE CALL (C43) is displayed if the heat roller temperature is below 40°C (the output voltage of

heater thermistor 1 is 0.1599V) continuously for 500 milliseconds after the error diagnosis performed

during warming-up ends.

(3) Heater lamp abnormal after abnormal diagnosis performed during warming-up or after the Ready

state

SERVICE CALL (C44) is displayed if the heat roller temperature does not reach the ready set tem-

perature even 205 seconds after the start of warming-up, or if the temperature at the center of the heat

roller is above 230°C (the output voltage of heater thermistor 1 is 3.09V) continuously for 500 millisec-

onds or below 100°C (the output voltage of heater thermistor 1 is 0.6407V) continuously for 500

milliseconds, after the Ready state.

(4) Thermistor abnormal at the heat roller ends

SERVICE CALL (C45) is displayed if the heat roller end temperature is above 270°C (the output

voltage of heater thermistor 2 is 2.72V) continuously for 500 milliseconds or below 40°C (the output

voltage of heater thermistor 2 is 0.0702V) continuously for 500 milliseconds, after the Ready state.

Summary of Contents for DP1600

Page 1: ...DIGITALPLAINPAPERCOPIER DP1600 2000 2500 File No 31100011 R0111216600 TTEC ...

Page 3: ... direct sunlight Also provide proper ventilation as the copier emits a slight amount of ozone To insure adequate working space for the copying operation keep a minimum clearance of 80 cm 32 on the left 80 cm 32 on the right and 10 cm 4 in the rear After having installed the copier be sure to push the carrying handles into the copier 3 Service of Machines Basically be sure to turn the main switch o...

Page 4: ... the relevant local regulations or rules 7 When parts are disassembled reassembly is basically the reverse of disas sembly unless otherwise noted in this manual or other related documents Be careful not to reassemble small parts such as screws washers pins E rings toothed washers in the wrong places 8 Basically the machine should not be operated with any parts removed or dis assembled 9 Precaution...

Page 5: ...1 SPECIFICATIONS ACCESSORIES OPTIONS SUPPLIES 1 1 1 1 Specifications 1 1 1 2 Accessories 1 5 1 3 Options 1 6 1 4 Replacement Units Supplies 1 6 1 5 System List 1 7 ...

Page 6: ...29 lb Single sheet 105 127 g m2 or 29 34 lb excluding carbon paper pasted sheets and stapled sheets Max size A3 LD Copy speed DP1600 series Copies min Upper PFU PFP LCF Bypass feeding SFB cassette Upper Lower cassette No paper size Paper size cassette with CM designated designated A4 LT 20 20 20 20 20 12 20 A4 R 16 16 16 16 12 16 LT R 16 16 16 16 12 16 B4 14 14 14 14 12 14 LG 14 14 14 14 12 14 A3 ...

Page 7: ... originals are set in the automatic document feeder Copy paper Copy mode Single sided originals 1 set 3 sets Single sided copies Non sort 5 sets Single sided originals 1 set 3 sets Two sided copies Sort 5 sets Two sided originals 1 set 3 sets Single sided copies Sort 5 sets Two sided originals 1 set 3 sets Two sided copies Sort 5 sets DP2500 series Copies min Upper PFU PFP LCF Bypass feeding SFB c...

Page 8: ... x 15 4 dot mm 406 dpi x 392 dpi Paper feeding Automatic feeding Copier s cassette 1 piece standard DP1600 series Expandable up to 3 pieces by installing optional cassettes DP2000 2500 series Expandable up to 4 pieces by installing optional cassettes PFU optional Stack height 60 5 mm Equivalent to 550 sheets 64 to 80 g m2 17 to 21 lb PFP optional Stack height 60 5 mm Equivalent to 550 sheets 64 to...

Page 9: ... x 554 x 1039 mm 530 x 554 x 1039 mm Standard Original cover JSP 604 x 554 x 643 mm 604 x 554 x 643 mm Standard Original cover SFB 801 x 554 x 643 mm 801 x 554 x 643 mm Standard Original cover OCT 604 x 554 x 643 mm 604 x 554 x 643 mm Standard Original cover Stapler 787 x 554 x 676 mm 787 x 554 x 676 mm Standard Original cover Finisher 957 x 554 x 643 mm Weight Standard 50 Kg 110 lb with Process u...

Page 10: ...urope AUD Australia ASD Asia SAD Saudi Arabia TWD Taiwan CND China Setup instructions 1pc Operator s manual 1pc Setup report 1pc for NAD and MJD Warranty sheet 1pc for NAD CS card 1pc for MJD Process unit 1pc Toner cartridge 1pc Operator s manual pocket 1pc Detouchable power cord 1pc T 808 DP2000 2500 series T 101 2 ...

Page 11: ...1 RADF MR 3011 Paper feed unit PFU MY 1015 MY 1015 N Cassette module CM MY 1017 MY 1017 N for DP2000 2500 series Large capacity feeder LCF KD 1010 for DP2000 2500 series Paper feed controller PFC GH 1010 GH 1010 N for DP1600 series Paper feed controller PFC GH 1020 GH 1020 N Paper feed controller PFC GH 1030 GH 1030 N for DP1600S 2000S 2500S NAD MJD AUD ASD SAD Job separator JSP MJ 5001 MJ 5001 N ...

Page 12: ... PFU MY 1015 MY 1015 N Paper feed pedestal PFP KD 1009 KD 1009 N Large capacity feeder KD 1010 Cassette module CM MY 1017 MY 1017 N Internet fax kit GD 1070 Fax board kit GD 1060 EU GD 1060 NA GD 1060 AU GD 1060 TW FAX board NCU board Operation panel Network interface card kit NIC GF 1110 NIC Relay board Printer kit Printer control GA 1030 for DP1600 series GA 1031 for DP1600 2000 2500 series Memo...

Page 13: ... 2 4 1 Normal 2 18 2 4 2 When the PFU PFP ADU SFB and OCT are mounted 2 18 2 4 3 When the PFU PFP CM ADU SFB and JSP are mounted 2 19 2 4 4 When the PFU LCF ADU SFB and Finisher are mounted 2 19 2 5 System Block Diagrams 2 20 2 6 Removal and Reinstallation of Covers and PC Boards 2 21 2 6 1 Removal and reinstallation of covers 2 21 2 6 2 Removal of PC boards 2 29 ...

Page 14: ...1600 2000 2500 OUTLINE OF THE MACHINE 2 OUTLINE OF THE MACHINE 2 1 Sectional View A Front view 1 11 8 6 9 43 44 45 46 47 34 35 36 37 31 49 48 32 39 38 40 7 3 5 2 10 13 14 18 19 20 17 25 26 27 28 29 30 33 4 12 15 16 21 22 24 23 41 42 ...

Page 15: ...ller 20 Cleaning roller 21 Heat roller 22 Heater lamp 23 Heater thermofuse 24 Heater thermistor 1 2 25 Process unit 26 Transfer charger 27 Transfer guide roller 28 Pinch roller 29 Registration roller 30 Feed roller 31 Pickup roller 32 Timing pulley 33 Separate roller 34 2nd pinch roller 35 2nd feed roller 36 Cassette slider 37 Cassette catch 38 Toner supply gear 39 Toner supply motor 40 Paper cass...

Page 16: ...0 TOSHIBA TEC 2 3 1600 2000 2500 OUTLINE OF THE MACHINE B Rear view 11 12 24 29 26 27 51 30 36 41 42 43 44 47 46 45 48 49 50 40 39 35 34 32 33 52 31 14 15 16 25 38 37 13 18 17 19 20 21 22 7 6 23 28 8 9 10 1 2 3 4 5 ...

Page 17: ...ve gear 1 9 Exit drive gear 2 10 Exit drive gear 3 11 Exit drive gear 4 12 Exit drive gear 6 13 Exit drive gear 5 14 Exit drive gear 7 15 HR drive gear 1 16 HR drive gear 2 17 HR drive gear 3 18 Transmission gear 1 19 Transmission gear 2 20 Main drive gear 1 21 Main drive gear 2 22 Main drive gear 3 23 Main drive gear 4 24 Main drive gear 5 25 Main drive gear 6 26 Timing belt 176 27 Developer driv...

Page 18: ...December 2000 TOSHIBA TEC 2 5 1600 2000 2500 OUTLINE OF THE MACHINE 2 2 Location of Electrical Parts A 1 Boards RLY MAN MEM 1 Option MEM 2 Option FUS ASD AUD CND TWD SAD models HVPS PIF 02 02 01 ...

Page 19: ...1600 2000 2500 OUTLINE OF THE MACHINE 2 6 December 2000 TOSHIBA TEC A 2 Boards INV CCD SLG LCD PNL VL LDR PDV LVPS 02 02 02 ...

Page 20: ...BA TEC 2 7 1600 2000 2500 OUTLINE OF THE MACHINE B 1 Sensors switches and clutches APS 1 ASD AUD CND TWD SAD MJD models APS 2 APS 3 APS 4 APS 5 APS 6 NAD model SEN1 SEN2 CL1 CL2 SEN5 SEN4 SEN3 DP2000 2500 series 02 02 03 ...

Page 21: ...1600 2000 2500 OUTLINE OF THE MACHINE 2 8 December 2000 TOSHIBA TEC B 2 Switches SW2 SW1 02 02 04 ...

Page 22: ...December 2000 TOSHIBA TEC 2 9 1600 2000 2500 OUTLINE OF THE MACHINE B 3 Sensors switches and clutches SEN6 SEN7 CL3 SW3 02 02 05 ...

Page 23: ...1600 2000 2500 OUTLINE OF THE MACHINE 2 10 December 2000 TOSHIBA TEC C 1 Motors M1 M3 M5 M7 M6 M4 M2 02 02 06 ...

Page 24: ...ember 2000 TOSHIBA TEC 2 11 1600 2000 2500 OUTLINE OF THE MACHINE D 1 Thermofuse thermistors and heaters THM1 HL2 ASD AUD CND MJD models THM2 THM3 HL3 ASD AUD CND MJD models HL1 NAD TWD SAD models 02 02 07 ...

Page 25: ...00 2000 2500 OUTLINE OF THE MACHINE 2 12 December 2000 TOSHIBA TEC D 2 Sensors switches thermofuse thermistors lamps and heaters THM4 EXP THM5 DLE SEN8 SW4 SW5 SW6 02 02 08 ASD AUD CND TWD SAD models DH1 ...

Page 26: ... controls the scanning optical sys tem and ADF MR 2012 RADF MR 3011 Option LCD PWA Key switch PWA Variable resistor PWA for adjusting the LCD display darkness PWA which drives the laser PWA which drives the polygon motor 64 Mbyte expansion memory PWA Option Symbol MAN RLY PIF INV CCD SLG LCD PNL VL LDR PDV MEM 1 MEM 2 Name PWA F MAN Main PWA PWA F RLY Relay PWA PWA F PIF PC I F PWA INV EXPO Invert...

Page 27: ... Detects the transport of paper from the op tion cassette Detects the presence or absence of paper placed in the copier cassette Detects the lift up of the tray Detects the toner density In Process unit Symbol APS 1 APS 2 APS 3 APS 4 APS 5 APS 2 APS 3 APS 4 APS 5 APS 6 SEN1 SEN2 SEN3 SEN4 SEN5 SEN6 SEN7 SEN8 Name APS 1 APS 2 APS 3 APS 4 APS 5 APS Automatic Paper Size detection sensor APS 2 APS 3 A...

Page 28: ... SW Toner cartridge switch FRCOV SW Front cover switch CST SW Paper cassette switch MAIN SW Main switch SIIL SW Interlock switch Side cover FRIL SW Interlock switch Front cover 4 Motors Remarks C 1 C 1 C 1 C 1 C 1 C 1 C 1 Function Performs scanning for the optical system Allows ozone to escape from the inside of the copier Cools the inside of the copier Sucks the developed paper from the drum Main...

Page 29: ...d feed roller clutch PU CLT Pickup roller clutch 6 Thermofuse and thermistors Remarks D 1 D 1 D 1 D 2 D 2 Function Prevents abnormal overheat of the heater lamp Detects the surface temperature of the heat roller Detects the surface temperature of the heat roller end Keeps the scanner damp heater at a fixed temperature ASD AUD CND TWD SAD models Detects the surface temperature of the drum Symbol TH...

Page 30: ...l Dehumidifies the inside of the scanner ASD AUD CND models Removes residual charge on the drum surface In Process unit Symbol EXP HL1 HL2 HL3 DH1 DLE Name EXPO LAMP Exposure lamp U900 HL Heater lamp U900 E400 HL Heater lamp E400 E500 HL Heater lamp E500 SCN DH 100 Scanner dump heater SCN DH 115 Scanner dump heater SCN DH 230 Scanner dump heater PWA F DLE Discharge LED PWA Remarks A 2 A 2 A 1 Func...

Page 31: ...1600 2000 2500 OUTLINE OF THE MACHINE 2 18 December 2000 TOSHIBA TEC 2 4 Copy Paper Path 2 4 1 Normal 2 4 2 When the PFU PFP ADU SFB and OCT are mounted 02 04 02 02 04 03 Duplex print ...

Page 32: ...000 TOSHIBA TEC 2 19 1600 2000 2500 OUTLINE OF THE MACHINE 2 4 3 When the PFU PFP CM ADU SFB and JSP are mounted 2 4 4 When the PFU LCF ADU SFB and Finisher are mounted 02 04 04 02 04 05 Duplex print Duplex print ...

Page 33: ...Mbit 16 SDRAM 64Mbit RTC 16 16 SDRAM 64Mbit x8 SDRAM 64Mbit x8 PWA F MEM 1 GC 1050 GC 1050 N System data bus PIX data bus 16 16 16 16 16 16 PWA F MEM 2 GC 1050 GC 1050 N PWA F SLG PWA F MAN PWA F CCD SRAM 256Kbit x2 CODEC Memory backup circuit V 34 MODEM 16 16 SRAM 256kbit x2 16 PWA F PNL TO PWA F OTK TO PWA F NCU US EU PWA F RLY PS LVPS US EU PS HVPS Process unit Finisher ADU MD 0101 MD 0101 N PF...

Page 34: ...t the power cable 3 Detach the manual pocket 4 Remove 3 screws release hook and detach top cover Fig 2 6 2 Rear cover Screw Screw Hook Top cover 001 Screw 002 C Scanner cover 1 If an Original Cover KA 1600PC ADF MR 2012 or the RADF MR 3011 is attached to the copier open it 2 Remove the cushion rubber at 3 places Fig 2 6 3 Cushion rubber 003 1 01 05 A Rear cover 1 If a STP KK 1600 is attached to th...

Page 35: ...ow D Top cover L 1 If a Finisher MJ 1011 is attached to the copier detach the finisher plate 2 IfanOriginalCover KA 1600PC ADF MR 2012 or the RADF MR 3011 is attached to the copier detach it 3 If a STP KK 1600 is attached to the copier dis connect the power cable 4 Detach the manual pocket 5 Detach top cover See Fig 2 6 2 6 Remove 2 screws release 2 tabs and detach top cover L by lifting in the di...

Page 36: ...2 6 4 4 Detach control panel front cover See Fig 2 6 7 5 Remove 2 screws release one tab and detach control panel bottom cover Fig 2 6 8 Screw Control panel bottom cover Screw 006 2 H Control panel 1 If a Finisher MJ 1011 is attached to the copier detach the finisher plate 2 IfanOriginalCover KA 1600PC ADF MR 2012 or the RADF MR 3011 is attached to the copier open it 3 Detach scanner cover See Fig...

Page 37: ...over 1 If a JSP MJ 5001 or OCT MJ 5002 is at tached to the copier detach the tray 2 Lift ozone cover off while holding both sides 3 Detach ozone filter Fig 2 6 10 Fig 2 6 11 K Paper cassette 1 Draw out paper cassette and lift it off in the di rection of the arrow Fig 2 6 12 L Left cover 1 If a Finisher MJ 1011 is attached to the copier detach it 2 Remove 3 screws holding the paper tray cover See F...

Page 38: ...cover R Lower right cover R In case that an ADU and SFB are not attached or a SFB is attached 1 Open side cover 2 Remove 2 screws and detach upper right cover R 3 If a SFB MY 1016 is attached to the copier detach it 4 Remove 2 screws and detach lower right cover R In case that an ADU is attached or an ADU and SFB are attached 1 Open an ADU MD 0101 and release the wire 2 Open side cover 3 Remove 2 ...

Page 39: ...mbly 1 1 If an ADU MD 0101 and or SFB MY 1016 are attached to the copier detach it 1 2 Open ADU MD 0101 if it is attached 2 1 Detach right cover R See Fig 2 6 15 2 2 Detach upper right cover R See Fig 2 6 15 1 3 Detach one connector and release the clamp Fig 2 6 16 4 Remove 2 screws securing stopper and guide pin then detach paper guide B spring and side cover assembly Fig 2 6 17 Side cover Clamp ...

Page 40: ...crew 5 Detach scanner cover See Fig 2 6 3 and 2 6 4 6 Detach control panel front cover See Fig 2 6 7 7 Detach control panel bottom cover See Fig 2 6 8 8 Open side cover 9 Open exit cover Fig 2 6 21 Stop ring Exit cover 019 R Exit cover 1 If a Finisher MJ 1011 is attached to the copier detach the finisher plate and junction block 2 If a JSP MJ 5001 or OCT MJ 5002 is at tached to the copier detach i...

Page 41: ...ne screw release 4 hooks and de tach inner cover Fig 2 6 22 Screw Inner cover Screw Inner cover 020 Top cover L Left cover R Screw U Main cover 1 If a Finisher MJ 1011 is attached to the copier detach the finisher plate and junction block 2 If a JSP MJ 5001 or OCT MJ 5002 is at tached to the copier detach it 3 If an Original Cover KA 1600PC ADF MR 2012 or the RADF MR 3011 is attached to the copier...

Page 42: ... to the copier unplug the connectors for CN14 and CN17 7 If finisher MJ 1011 is attached to the copier detach the finisher PWA 8 Detach the connectors from MAIN PWA CN4 CN8 CN9 CN18 9 Remove 4 screws and remove MAIN PWA CN15 from RELAY PWA CN21 for DP1600 10 Remove 4 screws and then release the clamp to remove MAIN PWA CN15 from RELAY PWA CN21 for DP2000 2500 CAUTION There is a danger of a compone...

Page 43: ...er confirming the version of it 7 Settings for the country code or region code 9 Writing in memory entering the drum counter value DRUM COUNTER long size counter value A3 LD and short size counter value A4 LT For the setting value refer to the DRUM UNIT LIST printed before replacing the MAIN PWA When the DRUM UNIT LIST is not printed perform the following setting Drum counter value Find a remainde...

Page 44: ...r value 08 351 by the PM life value 81k or 99k When 08 251 is 0 however it is not necessary to enter the 08 252 value For the setting procedures refer to sections 1 2 1 and 1 2 2 of the Service Handbook 1 05 205 Developer bias DC adjustment 2 05 210 Grid voltage initial value adjustment 3 05 220 Transfer H 4 05 221 Transfer C 5 05 233 Separation H 6 05 234 Separation C 7 05 235 Separation L 8 05 4...

Page 45: ... is attached to the copier unplug the connectors for CN14 and CN17 7 If finisher MJ 1011 is attached to the copier detach the finisher PWA 8 Remove MAIN PWA See Fig 2 6 25 and 2 6 25 1 9 Detach all the connectors from RELAY PWA 10 Remove 4 screws and remove RELAY PWA Fig 2 6 26 RELAY PWA Screw RELAY PWA 024 C PC I F PWA 1 If a STP KK 1600 is attached to the copier disconnect the power cable 2 Deta...

Page 46: ...e 2 Detach the manual pocket 3 Detach rear cover See Fig 2 6 1 4 If a PCL kit GA 1030 GA 1031 is attached to the copier detach it 5 If a NIC kit GF 1110 or I FAX GD 1070 is attached to the copier unplug the connectors for CN14 and CN17 6 Remove 2 screws release 2 clamps and de tach HVPS cover Clamp Clamp HVPS cover Screw 026 1 Fig 2 6 28 7 Detach all the connectors remove 4 screws then remove high...

Page 47: ...e Fig 2 6 10 5 Detach paper tray cover See Fig 2 6 11 6 Loosen 5 screws 7 Remove one screw and detach LVPS cover Fig 2 6 30 8 Detach all the connectors and release one clamps 9 Remove 3 screws and remove LVPS Fig 2 6 31 01 07 Note With the CND model pay attention to the color of the connectors when connecting the power cables When attaching the main power switch make sure that the reset switch con...

Page 48: ...nd remove FUS PWA Fig 2 6 33 F FUS PWA TWD SAD ASD AUD CND models 1 If a STP KK 1600 is attached to the copier disconnect the power cable 2 Detach the manual pocket 3 Detach rear cover See Fig 2 6 1 4 Remove one screw and detach FUS PWA cover SAD ASD AUD CND models 01 07 5 Remove 5 screws to detach PFC PWA cover and FUS PWA cover TWD model Fig 2 6 32 1 028 4 SAD ASD AUD CND models TWD model FUS PW...

Page 49: ...3 COPYING PROCESS 3 1 3 1 Copying Process 3 1 3 2 Details of Copying Process 3 2 3 3 List of Copying Process Conditions 3 9 3 4 Disassembly and Replacement 3 10 01 11 ...

Page 50: ...lly removes any remain ing toner on the drum Discharger LED array Discharges any re maining charge from the drum 03001 Fig 3 1 1 1 2 3 4 5 6 7 8 9 10 11 Scanning Image processing CCD 600DPI 7450 pixels Orignal exposur Xenon lamp 14 W 1900 V rms for DP1600 series 1250 V rms for DP2000 2500 series Fixing Heat roller 100V 900W x 1 200V 400W x 1 500W x 1 Paper exit Cleaning Discharger LED array Wavele...

Page 51: ...by the charging scanning printing and discharging processes described later and the minus potential remains on areas correspond ing to white areas of the original The image on the drum resulting from this mi nus potential is called a latent image as it can not be seen directly by the human eye 2 Charging Charging is the process of uniformly applying a charge to the surface of the photosensitive dr...

Page 52: ...ng the im age signals sent from the image processor to optical signals and exposing these optical sig nals on photosensitive drum Image signals from the image processor are converted to optical signals and these optical signals are exposed by a semiconductor laser to form a static latent image on the photosensi tive drum 03005 CCD board Scanner control PC board Image processor Example Light intens...

Page 53: ...V About Developing Agent Toner and carrier are mixed The toner is charged to minus polarity and the carrier is charged to plus polarity by friction caused by stirring Toner Comprises plastic and Magnetite Carrier Ferrite 0 100V 200V 300V 460V or 430V 600V Intermediate tones Black solid White background White background Image is not developed by bias potential Bias voltage When the potential of the...

Page 54: ...ppen to paper passing between the drum and the transfer charger The toner moves from the drum surface onto the paper Paper Drum Transfer charger 03013 03014 Toner Progress of paper Rotation of drum Transfer charger Fig 3 2 12 Fig 3 2 13 For smooth transfer this machine features a transfer bias stage The transfer bias process prevents the charge of the transfer charger from flowing to the paper fee...

Page 55: ...er and the drum weakens The paper is separated from the drum by its own weight Position of Paper in Relation to Transfer Point Separation Output Leading edge 4 3 KV DC Trailing edge 3 9 KV DC Reference Combined use of separation charger and sepa ration claw To prevent the copy paper from failing to be separated during the operation due to incom plete transfer charging incomplete separation chargin...

Page 56: ... to the paper going through the two rollers The toner on the paper becomes fixed 03017 03018 Separation claw Paper Heat roller Pressure Heat roller Direction of paper movement Heater lamp Pressure Pressure roller Fig 3 2 15 Fig 3 2 16 9 Cleaning This process collects any toner remaining on the drum Method The edge of a urethane rubber blade main blade is placed against the drum surface This blade ...

Page 57: ... remains on the drum sur face The potential of the drum surface becomes un even at charging for the next copy The copy image is doubled the previous im age remains Method Discharge LED array illuminates the entire drum surface The drum becomes a conductor Since the drum is grounded the electric charge escapes The drum is ready for the next copy 03020 Discharge LED array Drum Fig 3 2 18 ...

Page 58: ...ith magnetic roller inside 2 Auto toner Toner end sensor 3 Toner replenishment Toner cartridge system 4 Toner empty detection Toner end sensor 5 Toner T 1600 T 2500 6 Developing material D 1600 7 Developer bias 430 V DC output adjustable 460 V DC output adjustable at printing at printing 150 V DC fix others 150 V DC fix others 5 Transfer bias Adjustment not needed 6 Transfer Adjustable output cons...

Page 59: ... 4 02 3 4 03 Shutter Spring Separation claw Drum assembly Screw Screw Screw Screw DLE PWA assembly A Separation claw 1 Remove the toner cartridge and the process unit 2 Lift the shutter and detach the separation claw Note Be careful not to be injured by the edges of the separation claw and star wheel 3 4 Disassembly and Replacement When disassembling the process unit pay special attention not to d...

Page 60: ...d in front side from the spring 7 Remove the main charger wire located in rear side from the hook Fig 3 4 6 Fig 3 4 7 Main charger grid Hook Hook 3 4 05 Main charger wire Main charger wire bracket Spring Hook 01 11 3 4 06 Main charger wire cleaning pad Main charger wire cleaning pad Main charger wire 3 4 07 Notes 1 Be sure to attach the main charger wire through the space between the main charger ...

Page 61: ...of the new drum including both edges to where the OPC is not coated 01 11 Fig 3 4 8 D Drum cleaning blade 1 Remove the toner cartridge and the process unit 2 Detach the separation claw See Fig 3 4 1 3 Detach the drum assembly See Fig 3 4 2 4 Detach the DLE PWA assembly See Fig 3 4 3 5 Detach the main charger assembly See Fig 3 4 4 6 Detach the drum See Fig 3 4 8 7 Pull out 2 pins and detach the dr...

Page 62: ...oper assembly Fig 3 4 12 Notes 1 Before attaching the cover sheet B wipe the surface to be attached 2 Attach the cover sheet B by putting it against the reference position described in right Attach the cover sheet B securely with no portion lifted and no wrinkles ap peared Fig 3 4 13 Recovery sheet 3 4 10 Recovery sheet Reference position 3 4 11 Developer assembly Cover sheet B 3 4 12 3 4 13 Refer...

Page 63: ...er Fig 3 4 16 4 Turn the developer assembly up side down and detach the old developer material Fig 3 4 17 Cover sheet A Developer assembly 3 4 14 3 4 15 Reference position Cover sheet A Reference position Screw Screw Developer cover Developer assembly 3 4 16 Developer assembly 3 4 17 Notes 1 Before attaching the cover sheet A wipe the surface to be attached 2 Attach the recovery sheet A in the pos...

Page 64: ...latten the developer material 8 Rotate the gear several times until the devel oper is supplied to the magnetic roller Fig 3 4 19 9 Attach the developer cover H Main charger wire cleaning pad 1 Remove the toner cartridge and the process unit 2 Detach the drum assembly See Fig 3 4 2 3 Detach the DLE PWA assembly See Fig 3 4 3 4 Detach the main charger assembly See Fig 3 4 4 5 Detach the main charger...

Page 65: ... developer drive gear 2 7 Detach the magnetic roller drive gear Note Apply 0 1g of the grease X5 6020 GREASE to the gear teeth of the devel oper drive gear 1 except the part used for hooking the timing belt 138 developer drive gear 2 and magnetic roller drive gear Fig 3 4 23 Developer assembly Timing belt 138 3 4 21 Developer assembly Screw Developer gear cover 3 4 22 Developer drive gear 2 Washer...

Page 66: ...re from 1 1 Fix the doctor blade using 3 screws temporarily 2 Insert the jig of the gauge 0 275 into the gap between the magnetic roller and doctor blade The jig should be inserted into the po sitions of 3 screws 3 Tighten the screws while the doctor blade is passed against the doctor sleeve jig lightly 4 Insert the jig of the gauge 0 25 into the gap between the magnetic roller and doctor blade Co...

Page 67: ...mbly Fig 3 4 29 14 Detach the bushing 15 Detach 2 washers and the 2 magnetic roller spacer Fig 3 4 30 01 11 Reference position Doctor blade Doctor blade seal Doctor blade 3 4 27 Bushing Bushing 3 4 28 1 2 3 4 29 Magnetic roller Bushing Washer Magnetic roller spacer Magnetic roller Washer Magnetic roller spacer 3 4 30 2 Attach the doctor blade seal to the doc tor blade at the position described in ...

Page 68: ...ight If the fuse is blown out replace the fuse by the procedure be low Fig 3 4 31 1 Remove the toner cartridge and the process unit 2 Detach the drum assembly See Fig 3 4 2 3 Detach the DLE PWA assembly See Fig 3 4 3 4 Replace the fuse shown in right Fig 3 4 32 01 11 terminal terminal To the terminal To the terminal 3 4 31 DLE PWA assembly Fuse 3 4 32 ...

Page 69: ... 3 Automatic feed copying using the START key 4 3 4 2 4 Bypass feed copying 4 4 4 2 5 Interrupt copying 4 4 4 3 Fault Detection 4 5 4 3 1 Classification of faults 4 5 4 3 2 Explanation of faults 4 6 4 4 Flow Charts 4 9 4 4 1 At power ON time 4 9 4 4 2 Copying at platen Simplex Simplex 4 11 4 4 3 Copying using cassette 1 4 12 ...

Page 70: ...ars on the display The PS fan motor operates and the process unit fan motor operates at low speed Initialization of optical unit The carriage moves to the home position and then stops The peak position is detected as the carriage moves The Exposure lamp lights and the peak is detected Shading sheet is detected The Exposure lamp goes off Initialization of paper feed mechanism Each tray is lifted It...

Page 71: ...ave power consumption The Low Power mode switches to the Sleep mode if no operation has been performed for a fixed time If the Low Power function is invalid program so that such switching takes place from the standard mode to the Sleep mode The standard switching time is 15 minutes The time taken before such switching can be programmable 3 min to 240 min The Sleep mode is deactivated when you pres...

Page 72: ...ure begins At the same time paper separation bias output is turned ON High 9 Transfer output turns ON High When a specified time has elapsed the transfer output is switched to Mid 10 Transfer guide bias output turns ON At the same time the paper separation bias output is switched to Low When a specified time has elapsed the paper separation bias is switched to Mid 11 In a specified time after the ...

Page 73: ... high speed and the discharge lamp lights The drum developer heat roller and exit roller move 4 2 5 Interrupt copying 1 Press the INTERRUPT key The INTERRUPT key is illuminated and the message Job interrupted appears The present copy operation is stopped temporarily The copy mode automatically becomes the interrupt copy mode 2 Interrupt copying takes place 3 After the interrupt copying ends the wo...

Page 74: ...n be resumed It can occur even during non operation Display Add paper Toner is low Drum life warning B Jam error An error where the copier can be restored when the operator re moves the cause of the abnormal condition from the machine Display Toner empty Check process Misfeed in copier Misfeed in doc feeder Misfeed in duplexer Misfeed in finisher Misfeed in bypass C Error subject to service call A...

Page 75: ...essage is displayed when a paper jam has occurred in the transport path There are the following six kinds of jams including those for the installation of options FEED JAM When paper is fed from the cassette of the copier the sensors feed sensor and exit sensor turn ON and OFF in order At this time if the feed sensor or exit sensor does not turn ON for a fixed time a FEED JAM will be assumed If the...

Page 76: ...t detect the presence of paper even after a fixed time has elapsed SFB miss feed will be assumed and the message Misfeed in bypass will be displayed Reset procedure Remove the jammed paper and remove all the paper remaining in the tray of the SFB to turn OFF the SFB feed sensor ADU When performing duplex copying the one side printed paper passes through the ADU At this time if the sensors 2 pcs in...

Page 77: ...yed when a document jam has occurred Reset procedure Open the ADF cover or RADF cover and remove the jammed document B 3 Toner empty When a fixed number of sheets are printed after a Toner Low state has been detected a Toner Empty state will be assumed to stop the printing If a Toner Empty state occurs printing cannot be performed until toner is supplied Reset procedure Supply toner B 4 Check proc...

Page 78: ... motor at low speed Heater ON C95 YES Cover open NO Power supply unit fan motor NG YES Service call E03 YES Paper jam NO Process unit fan motor NG C96 YES Service call NO End of drum YES End of drum Polygon motor ON A Feed sensor Exit sensor Option cassette feed sensor with PFU PFP installed PFP paper feed sensor Upper with PFP installed ADU paper jam sensor Upper Lower with ADU installed 1 hinds ...

Page 79: ...n motor ON C01 NO Main motor NG YES Service call Supply of toner Stop of main motor NO Toner low or toner empty YES C41 NO Over 40 C YES Over 25 sec after heater ON YES NO NO Service call C43 or 44 YES Over 205 sec after heater ON Service call YES Print temperature OK NO Toner empty NO Standby Toner empty YES ...

Page 80: ...December 2000 TOSHIBA TEC 4 11 1600 2000 2500 COPIER OPERATION 4 4 2 Copying at platen Simplex Simplex Standby Start button ON Scanning of document Cassette feed Copy Ejection NO Final copy YES ...

Page 81: ...rriage Exposure lamp OFF Retraction of carriage Stop of carriage End of process system control Polygon motor OFF Laser ON Transfer bias ON Transfer guide bias ON Laser OFF Transfer bias OFF Transfer guide bias OFF NG Paper jam E01 NO Service call C01 YES Polygon motor OK NO Service call CA1 YES Remaining copy count 0 OK Exit sensor check 1 NG Paper jam E02 OK Exit sensor check 2 NO NO Service call...

Page 82: ...tems Shown on the Display Panel 5 2 5 2 1 Display during normal copying 5 2 5 2 2 Display in the event of faulty conditions 5 4 5 3 Relation between Copier Conditions and Operator s Actions 5 12 5 4 Description of Operation 5 13 5 4 1 Dot matrix LCD circuit 5 13 5 4 2 LED display circuit 5 17 ...

Page 83: ...laying the copier state or message When the operator s attention is needed a graphic symbol and a message indicating that particular con dition is Displayed in the LCD panel Layout of the control panel LCD panel display calling for operator s attention In case of PFU JAM Clearance Misfeed in copier Open lower side cover 1 3 Misfeed in copier Remove any misfeed paper from copier 2 3 Misfeed in copi...

Page 84: ...ear timer Now copying Displayed by pressing the START key Copy quantity indicator becomes ex 3 2 1 3 and copying is completed Energy saver conditions Platen sort copying standby state Timer off No message is displayed in the display panel Notes When the main switch comes ON the quantity and reproduc tion ratio of copies are indicated or example as 1 100 Copy quantity indicator shows 1 When a digit...

Page 85: ...x No Walk up screen SCAN Yes READY 1 PAPER A4 AUTO FINISHING NONSORT ZOOM 100 EDIT 1 Yes ENTER TEL NUMBER MAX128 Nov15 2000 11 30am M 100 RESOLUTION STANDARD AUTO COMM OPTION 2 Yes ENTER E MAIL ADDRESS MAX256 Nov15 2000 11 30am M 100 RESOLUTION 600dpi AUTO 3 Note Scan does not exist when GA 1030 1031 GD 1060 GF 1110 and GD 1070 are not attached ...

Page 86: ...a set time E in Fig 5 2 6 Original jammed An original is jammed in the ADF F in Fig 5 2 7 Paper jammed in the sorter G in Fig 5 2 8 Paper jammed in the ADU H in Fig 5 2 9 Some part of the mechanism mo tors switches or sensors is abnor mal Indication of PM cycle Displayed when it is time for preventive maintenance and inspection Capable of copying Notes Supply paper to the selected cassette Select ...

Page 87: ... Copy Copy FAX or COPY No action Add paper Cancel job Continue User Loads paper COPYING 5 PAPER A4 AUTO FINISHING SORT ZOOM 65 START Press Start to resume 5 PAPER A4 AUTO FINISHING SORT ZOOM 65 EDIT READY 10 PAPER A4 AUTO FINISHING SORT ZOOM 65 EDIT Finish Copy Copy Copy Memory clear 5 Yes No Copy CLEAR STOP x 1 x 1 SET CLEAR STOP x 1 x 1 SET Copy job is canceled SET SET Copy job is canceled Blink...

Page 88: ...READY 1 PAPER A4 AUTO FINISHING SORT ZOOM 100 EDIT No Wait adding toner 1 PAPER A4 AUTO FINISHING SORT ZOOM 100 EDIT No Adding toner Adding toner After adding toner READY 1 PAPER A4 AUTO FINISHING SORT ZOOM 100 EDIT No B Toner empty Open front cover 1 3 Toner empty Replace toner cartridge 2 3 Toner empty Close front cover 3 3 Toner is low 1 PAPER A4 AUTO FINISHING SORT ZOOM 100 EDIT When 100 pages...

Page 89: ...opier C Misfeed in bypass Remove any misfeed paper Then set them again 1 1 Misfeed in copier Open side cover of the copier 1 4 Misfeed in copier Release light blue fuser latches 2 4 Misfeed in copier Remove any misfeed paper from copier 3 4 x1 x1 D Misfeed in copier Close side cover of the copier 4 4 x1 x1 x1 x1 ...

Page 90: ...ny misfeed paper from copier 2 9 Misfeed in copier Close side cover of the copier 3 9 Misfeed in copier Open lower side cover 4 9 Misfeed in copier Remove any misfeed paper from copier 5 9 Misfeed in copier Close lower side cover 6 9 Misfeed in copier Open side cover of Large Capacity Feeder 7 9 Misfeed in copier Remove any misfeed paper from copier 8 9 Misfeed in copier Close side cover of Large ...

Page 91: ...d in doc feeder ADF F x1 x1 x1 x1 x1 x1 Misfeed in doc feefer Open jam access cover of doc feeder 1 4 Misfeed in doc feefer Turn light blue wheel 2 4 Misfeed in doc feefer Remove the misfeed sheets of original 3 4 Misfeed in doc feefer Close jam access cover of doc feeder 4 4 ...

Page 92: ...x1 x1 x1 x1 x1 x1 x1 x1 x1 x1 Misfeed in finisher Move finisher away from copier 1 6 Misfeed in finisher Remove any misfeed paper from finisher 2 6 Misfeed in finisher Join finisher to copier 3 6 Misfeed in finisher Open bridge cover 4 6 Misfeed in finisher Remove any misfeed paper from bridge 5 6 Misfeed in finisher Close bridge cover 6 6 ...

Page 93: ...Open duplex unit 1 7 Misfeed in duplexer Remove any misfeed paper from duplexer 2 7 Misfeed in duplexer Open side cover of the copier 3 6 Misfeed in duplexer Release light blue fuser latches 4 7 Misfeed in duplexer Remove any misfeed paper from copier 5 7 Misfeed in duplexer Close side cover of the copier 6 7 Misfeed in duplexer Close duplex unit 7 7 ...

Page 94: ...TION CLEAR keys Zoom keys LIGHT DARK key PAPER SUPPLY key Interrupt key Energy saver key Performs the action or indication according to the operation Ignores the operation 1 Energy saver conditin is released by pressing the Super Energy saver key 2 Avoid switching the exposure during copy operation 3 Function of the Clear Stop key are as follows according to the machine condition Copy operation St...

Page 95: ...SPLAY UNIT 5 4 Description of Operation 5 4 1 Dot matrix LCD circuit 1 Structure The HLM6244 is an STN black white mode transmission type LCD with a 240 X 64 dots display capacity It includes driver LSI a frame and PC board STN Super Twisted Nematic ...

Page 96: ... 2500 DISPLAY UNIT 5 14 December 2000 TOSHIBA TEC 2 Block diagram FLM VSS VDD VO VEE LP SCP D Y driver LCD 240 x 64 dots Coml Com64 Segl X driver 1 AC signal generating circuit X driver 2 X driver 3 Seg240 BIAS ...

Page 97: ...in CPU writes to RAM the data to be displayed on the LCD The LCD controller driver reads the display data from RAM and outputs The data to the LCD LATCH D CLK 7 x 16 KEY SW E00008 WR Q BUFFER Y LED7 LED15 LED6 LED14 LED5 LED13 LED4 LED12 LED3 LED11 LED2 LED10 LED1 LED9 LED0 LED8 LED19 LED18 LED17 LED16 CLK E0000A E0000C RD DATA BUS D0 D7 D0 D7 A1 A4 IORD IOWR FOR POWER SAVE MODE SWS0 SWS6 SWC0 SWC...

Page 98: ...n Method System Resister Address Main board SRAM Data Address FLM SD LP SCP Clock Data SRAM control Timing generator Bit check control Attribute control Line memory control Line memory CPI LP 64 1 FLM 240 48 240 1 1 1 2 1 240 2 1 1 2 3 240 1 2 CP2 SCP CPI LP D 64 1 240 1 1 240 2 1 240 1 1 240 D 63 64 64 1 2 1 ...

Page 99: ...December 2000 TOSHIBA TEC 5 17 1600 2000 2500 DISPLAY UNIT 5 4 2 LED display circuit 1 Timing chart of LED display OA1 4 IOCS0X READ WRITE IORDX IOWRX OD0 7 ...

Page 100: ...rolled ad shown below The transistor connected to the LED anode is ON The output connected to the cathode of the LED is the level L The LED comes ON when both and above are satisfied 2SC411B OTK board 2SC411B L125HZ0 EC N016 L125HZ1 LED9 LED8 LED7 LED6 LED5 LED4 LED3 LED2 LED1 LED0 ...

Page 101: ...6 IMAGE PROCESSING 6 1 6 1 Introduction 6 1 6 2 Image Processing Circuit 6 2 6 3 SLG Board 6 3 6 3 1 Features 6 3 6 3 2 Functions of the image processing circuit 6 3 6 4 Scanner 6 7 6 5 Printer 6 8 ...

Page 102: ... Printer Scanner Original glass Shading control Image processing MAIN board Laser drive board LDR Polygonal motor drive board PDV Semicon ductor laser device Photosen sitive drum CCD board ASIC ST LOUIS SLG board Page memory Smooting ASIC EET Image processing Print control ASIC PTC 07001 Board No of ASIC Function SLG Board 1 High quality image processing image memory editing editing process ing ga...

Page 103: ...G Board The SLG board contains an image processing ASIC which implements the following functions Functions High quality image processing image memory editing editing processing gamma correction pro cessing tone processing and external output system interface Fig 6 2 1 07002 CCD board CCD A D conversion SLG board Image processing section Shading correction High quality image processing image memory...

Page 104: ...e processing circuit The image processing ASIC installed on the SLG board implements the following functions 1 High quality image processing A Range correction This function converts the image signal to density range width and corrects it to match each origi nal When making a copy of originals with a certain level of background such as newspapers this function can reduce the background density Fig...

Page 105: ...ng the density of the target pixel position to be x and the densities of its front and back positions to be a and b respectively the density of the target pixel position x after low pass filter operation is given as follows For 3 x 1 matrix The above operation is performed for all pixel positions to accomplish high original reproducibility The following figure shows the low pass filtering processi...

Page 106: ...to obtain an image with high reproducibility of the original 3 Image memory editing Editing functions such as enlargement reduction and mirror image are performed using line memory The line memory is used for storing one line of pixel data in the primary scanning direction and updated with new pixel data each time the next line is scanned a Enlargement reduction This function is accomplished by us...

Page 107: ...ses image data from negative to positive or vice versa on the entire area 5 Gamma correction This function corrects input output characteristics of the scanner printer to obtain image signals hav ing input output characteristics suitable for the copy mode 6 Tone processing This function processes tone to faithfully reproduce halftone images such as photographs 7 External output systems interface T...

Page 108: ... D conversion and the required image processing is carried out on these digital signals 1 Photo voltaic conversion Optical signals from the original are converted to electrical signals by the CCD device For details see Chapter 7 6 1 2 Signal amplification After conversion by the CCD the electrical signals are amplified 3 A D conversion Analog signals are converted to digital signals 4 Shading corr...

Page 109: ...oard Then they are laser controlled for the write operation 1 Setting of effective image area The top bottom left and right margins are set 2 Synchronization Clock Generation HSYNC and the reference clock signal at printer block block of horizontal synchronizing synchronized with the signal signal HSYNC 3 Laser drive block ON OFF control of the semiconductor laser and APC Auto Power Control contro...

Page 110: ... Lamp Control Circuit 7 10 7 6 General Description of CCD control 7 12 7 6 1 Photo voltaic conversion 7 12 7 6 2 Shading compensation 7 13 7 7 Automatic Original Size Detection Circuit DP2000 2500 series 7 14 7 7 1 Principle of original size detection 7 14 7 7 2 Original size detection 7 14 7 8 Damp Heater Control Circuit ASD AUD CND TWD SAD models 7 17 7 9 Disassembly and Replacement 7 18 ...

Page 111: ...y this CCD converts optical image data to electrical signals These resultant analog signals undergo A D conversion to be converted to digital signals These digital signals undergo various com pensation processes to create the required image These digital signals are computed and processed and then sent to the printer Carriage 1 rail Carriage 2 rail Carriage 2 Lens CCD PWA Scanner control PWA Scann...

Page 112: ... Carriage 1 is driven by the scanning motor to scan the original and is made up of the following parts a Exposure lamp The exposure lamp emits the light for illuminating the original Xenon lamp b Reflector The reflector is for efficiently directing light from the exposure lamp onto the surface of the original c Mirror 1 Mirror 1 is for guiding light reflected from the original to mirror 2 Mirror 2...

Page 113: ...e up the following Carriage 2 is driven by a scanning motor in the same way as carriage 1 and scans at a speed half that of carriage 1 The distance that the carriage scans is half that of carriage 1 4 Lens CCD Light reflected from mirror 3 is projected to the CCD The CCD is located at the focal point of a fixed lens Carriage 2 08 02 03 Mirror 2 Mirror 3 ...

Page 114: ...f electrical signals obtained by photo voltaic conversion by the CCD 6 Automatic original detection unit DP2000 2500 series The automatic original detection unit APS sensor uses sensors located in front of the lens cover and on the base frame for detection of the size of the original without the process of scanning Lens Scanner control PWA CCD PWA 08 02 04 ...

Page 115: ... all carriages 1 and 2 moves to the home position Home position is detected by carriage 1 passing the home position sensor Carriages 1 and 2 then scan the original when the START key on the control panel is depressed Timing belt 157 Wire roller Scanner motor Scanner motor pulley Scanner drive gear Scanner drive shaft Wire roller Carriage 2 Carriage 2 roller Carriage 1 Wire Timing belt 142 08 03 01...

Page 116: ... Process of Excitation IC4 turns the BENB signal to the HIGH level to turn off Q1 IC4 sends the BPWM signal current value setting signal to IC9 IC4 sends BCKO Clock Signal BDTA BDTB Serial Data Signal A B and BSTB Strobe Signal to IC9 based on the register settings rotational direction CW CCW excitation method 2 1 2 W1 2 2W1 2 Phase and clock double edge single edge IC9 allows current to flow thro...

Page 117: ...7 4 0 4 7 4 0 4 4 7 4 0 4 7 4 0 4 4 0 4 7 4 0 4 7 4 4 2 0 2 4 6 7 6 4 2 0 2 4 6 7 6 5 4 6 7 6 4 2 0 2 4 6 7 6 4 2 0 2 4 4 6 7 6 4 2 0 2 4 6 7 6 4 2 0 2 4 4 2 0 2 4 6 7 6 4 2 0 2 4 6 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 7 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 7 7 6 5 4 4 5 6 7 7 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 7 7 6 5 4 3 2 1 0 1 2 3 4 4 5 6 7 7 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 7 7 6 5 4 3 2 1 0 1 2 3 4 4 3 2 1 0 1 2 ...

Page 118: ...1600 2000 2500 SCANNER 7 8 December 2000 TOSHIBA TEC BCK0 BSTB Positive number Negative number BDTA BDTB 0 0 1 20 2 40 3 55 5 4 71 4 5 83 6 91 7 100 08 04 02 Output signal pattern ...

Page 119: ...the pipe 2 Behavior inside the lamp The electron inside the pipe is led to the electric field by applying voltage to the pair of the external electrodes and discharge is started Electrons then flow and clash with the Xenon atom inside the pipe to excite them and generate the ultraviolet ray This ultraviolet ray converts the fluorescer into the visible light 1 Electrode 2 Electron 3 Xenon atom 4 Ul...

Page 120: ...stics The following explains a case where Q1 has turned on If Q2 has turned on Q1 and Q2 should be substituted for each other Bias voltage of Q1 is produced in the Nb winding of the transformer T1 to allow Q1 to completely turn on At this time Q2 turns off because it is reverse biased When current flows through T1 the primary circuit resonates due to the Np winding and capacitor C1 This causes the...

Page 121: ...Np is supplied from the Ns winding of the secondary circuit as electric power As IC1 turns on and off Q1 in this way high frequency electric power is supplied from the secondary circuit ofT1 and fed to the exposure lamp for lighting IC1 monitors the input voltage and controls the on off time in response to the fluctuation in the input voltage It shortens the on time of Q1 when the input voltage ri...

Page 122: ...sensor comprises a P layer N layer semiconductor Optical energy generates a minus charge on the P layer proportional to the optical energy and irradiation time The charge generated at the photosensor is transferred to the transfer area shifted from right to left in the figure below according to the transfer clock and is output from the CCD During this operation the reaction speed of the CCD is slo...

Page 123: ...ce in the intensities of light reaching the CCD The photo voltaic capacities of each of the 7 450 CCD elements are uneven Consequently these problems must be compensated This is called shading compensation Shad ing compensation involves normalizing optical energy according to the following equation based on already known scanned black data and white data and compensating for uneven illuminance of ...

Page 124: ...t emitted by the LED s is reflected by the original and led to the phototransistor In this way the presence or absence of an original is detected by whether reflected light exists or not ASD AUD CND TWD SAD MJD models NAD model Original Original glass APS 1 2 3 4 5 Original Original glass APS 2 3 4 5 6 08 07 01 08 07 02 7 7 2 Original size detection 1 If the copier is set in the original size dete...

Page 125: ...00 TOSHIBA TEC 7 15 1600 2000 2500 SCANNER ASD AUD CND TWD SAD MJD models NAD model APS 5 APS 4 APS 3 APS 2 APS 1 A3 A4 B4 A4 R B5 B5 R A5 R LT R LT LG APS 6 APS 5 APS 4 APS 3 APS 2 ST R LD 08 07 03 08 07 04 01 03 ...

Page 126: ... the detected document size to the Main PWA as a size signal Size not fixed The scanner MPU sends a no document signal to the Main PWA The carriage 1 is stay on the standby position even though the reproduction ratio is changed when original size is changed Original cover sensor SW ON Keep the recognized original size or no original state just before the original cover sensor is turned on regard l...

Page 127: ...y line in series with the scanner damp heater The scanner thermofuse detects the temperature inside the scanner unit and supplies or shuts off the AC power to the scanner damp heater according to the detected temperature The scanner thermofuse turns ON at 21 1 C or under and turns OFF at 29 1 C or above The AC power from the entrance is always delivered while this machine is connected to the comme...

Page 128: ...ottom cover See Fig 2 6 8 12 If a FAX kit GD 1600 NA TW EU AU is at tached to the copier detach the FAX PWB and NCU PWB 13 If a PCL kit GA 1030 GA 1031 is attached to the copier detach it 14 If a NIC kit GF 1110 or I FAX GD 1070 is at tached to the copier unplug the connectors for CN14 and CN17 15 If finisher MJ 1011 is attached to the copier detach the finisher PWA 16 Remove MAIN PWA See Fig 2 6 ...

Page 129: ...ove 8 screws and remove scanner stay R Fig 7 8 4 Scanner stay L Screw Screw Screw Screw Scanner stay R Screw 040 041 21 Remove 2 screws to detach the NIC cover 22 Lift the NIC base plate and release the damp heater harness Fig 7 8 2 1 039 4 Screw NIC cover NIC base plate Damp heater harness ...

Page 130: ...ass stay 3 Remove 4 screws and remove original glass Fig 7 8 6 Screw Screw Original glass stay Original glass 043 1 25 Release the clamp and take out scanner as sembly Important 1 After the replacement of the scan ner assembly download firmware for the scanner PWA For details see chapter 5 of the Service Hand book 2 Download the MAIN PWA firmware if necessary after confirming the version of it 3 W...

Page 131: ...See Fig 7 8 6 7 Detach one connector and detach the motor harness 8 Remove one screw and remove the ADF con nector plate 9 Release the clamp and detach the harness Fig 7 8 8 044 Motor harness Clamp Screw ADF connector plate Harness 11 Remove 4 screws and remove Scanner motor bracket assembly while releasing scanner tim ing belt 142 Note Do not mix the screws removed Fig 7 8 10 Screw Scanner motor ...

Page 132: ...INV PWA CN1 CN2 4 Remove 2 screws and remove INV PWA as sembly Fig 7 8 12 CN1 CN2 049 1 5 Remove one screw release locking support and remove INV PWA Screw INV PWA assembly Fig 7 8 13 049 2 Screw INV PWA Screw INV PWA plate 12 Remove 2 screws and remove scanner motor Note For adjusting the timing belt when mount ing the scanner motor refer to the Service Handbook See Chapter 1 8 Fig 7 8 11 Scanner...

Page 133: ...remove INV PWA Fig 7 8 15 Screw Connector INV PWA assembly Screw Connector 049 3 Fig 7 8 14 INV PWA Screw INV PWA plate 049 4 Locking support Locking support E Scanner PWA 1 If an Original Cover KA 1600PC ADF MR 2012 or the RADF MR 3011 is attached to the copier open it 2 Remove original glass See Fig 7 8 6 3 Remove 4 screws and remove blind plate Fig 7 8 16 Note If the damp heater is installed re...

Page 134: ...shield plate TWD model of DP2500 se ries Note When attaching the CCD PWA upper shield plate fix the CCD PWA upper shield plate while pressing it to right Scanner PWA side Fig 7 8 17 2 6 Remove 2 screws and detach the CCD PWA lower shield plate TWD model of DP2500 se ries Fig 7 8 17 3 Screw Shield plate 050 3 Screw CCD PWA upper shield plate 050 4 Screw CCD PWA lower shield plate 050 5 01 09 ...

Page 135: ...er PWA In case of the TWD model of DP2500 series release 2 locking supports and detach the Scan ner PWA Important 1 After the replacement of the scan ner PWA download firmware for the scanner PWA For details see chapter 5 of the Service Handbook 2 Download the MAIN PWA firmware if necessary after confirming the version of it 3 After replacing the scanner PWA program 05 306 304 and then 305 by refe...

Page 136: ...P KK 1600 is attached to the copier detach it 3 Detach the manual pocket 4 If a Finisher MJ 1011 is attached to the copier detach the finisher plate 5 Detach top cover See Fig 2 6 2 6 Detach scanner cover See Fig 2 6 3 and 2 6 4 7 Detach top cover L See Fig 2 6 5 8 Detach top cover R See Fig 2 6 6 9 Remove the 12 screws and detach scanner frame cover Note When attaching scanner frame cover cor rec...

Page 137: ...p cable check that carriage 1 carriage 2 is not lifted If lifted secure it by moving the lamp cable front to back 13 Move carriage 1 to around the center Note To move carriage 1 push both ends of car riage 1 as Fig 7 8 22 or if you cannot reach there turn scanner drive shaft to move the carriage Fig 7 8 22 Screw Cable holder Lamp cable Carriage 1 054 14 Remove one screw and detach the ground wire ...

Page 138: ...top cover L See Fig 2 6 5 8 Detach top cover R See Fig 2 6 6 9 Release the lamp cable See Fig 7 8 19 to 7 8 22 10 Loosen 2 screws release wire and remove car riage 1 Fig 7 8 24 Screw Carriage 1 Carriage 1 056 1 11 Remove spring plate securing mirror 1 and re move mirror 1 Notes 1 Clean the surface of mirror 1 if dirty 2 For mounting Carriage 1 and adjusting the distortion refer to the Service Hand...

Page 139: ...e Fig 2 6 6 9 Release the lamp cable See Fig 7 8 19 to 7 8 22 10 Remove carriage 1 See Fig 7 8 24 11 Mount the clip jig to prevent the dislocation of wire wound on scanner drive shaft and secure wire Notes 1 When the wire holder clip jig is installed do not slide or loosen the wound wire 2 The wire holder clip jigs are the same time for the front and rear sides 3 Be careful when installing the cli...

Page 140: ...rror 2 if dirty Fig 7 8 29 16 Remove spring plate securing mirror 3 and re move mirror 3 Notes 1 Clean the surface of mirror 3 if dirty 2 For mounting Carriage 2 refer to the Ser vice Handbook See Chapter 1 8 CAUTION Never turn the angle adjusting screw of mirror Fig 7 8 30 Carriage 2 060 1 Mirror 2 Spring plate Spring plate Spring plate 060 2 Spring plate Spring plate Mirror 3 Screw Spring plate ...

Page 141: ... 7 Release the lamp cable See Fig 7 8 19 to 7 8 22 8 Remove the blind plate See Fig 7 8 16 and 7 8 17 9 Remove carriage 1 See Fig 7 8 24 10 Detach wire from carriage 2 See Fig 7 8 27 11 Remove wire roller from scanner frame and re lease wire 12 Detach 2 E rings and 2 bearings remove scan ner drive shaft assembly and remove timing belt 157 13 Detach wire from scanner drive shaft assem bly 14 Remove...

Page 142: ...el of DP2500 series See Fig 7 8 17 1 and Fig 7 8 17 2 5 Attach 2 screws removed in Fig 7 8 17 1 to the CCD unit TWD model of DP2500 series 6 Remove 3 screws detach 2 connectors and remove CCD unit Notes 1 When attaching the CCD unit detach 2 screws fixing the lens shield plate TWD model of DP2500 series See Fig 7 8 17 1 2 When attaching the flexible cable se curely lock the connector locks on both...

Page 143: ...ermofuse Fig 7 8 37 Clamp Connector 065 6 Scanner thermofuse Screw 065 7 K Document size sensor DP2000 2500 series 1 If an Original Cover KA 1600PC ADF MR 2012 or the RADF MR 3011 is attached to the copier open it 2 Remove original glass See Fig 7 8 6 3 Remove the blind plate See Fig 7 8 16 and 7 8 17 4 Remove 5 screws detach 5 connectors and remove document size sensor Note When installing docume...

Page 144: ... to the copier open it 2 Remove original glass See Fig 7 8 6 3 Move carriage 1 to around the center See Fig 7 8 22 4 Remove the screw release the hook and de tach the damp heater plate Screw Screw Damp heater Connector Clamp 065 8 Fig 7 8 38 5 Release 2 clamps and detach the connector 6 Remove 2 screws and remove damp heater Screw Hook Damp heater plate 065 9 Fig 7 8 39 ...

Page 145: ...8 PRINTING 8 1 8 1 General Description 8 1 8 2 Structure 8 2 8 3 Laser Diode 8 6 8 4 Disassembly and Replacement 8 7 ...

Page 146: ... the laser beam reflected by the polygon mirror reaches the drum Polygonal mirror motor drive PWA which controls the polygonal mirror motor Laser drive PWA which controls the laser beam Hsync detection mirror lens and Hsync detector which detect the Hsync signal on which the first printing position for every scanning is based The laser scanner unit is precisely adjusted and assembled in a clean ro...

Page 147: ...lts in an increase in energy to which extended exposure is hazardous The laser optical system of the digital plain paper copier is encased in metal which in turn is housed in the external cover There is thus no risk of leaks during use nor during normal servic ing Note however that the laser beam is not visible and extreme care must be exercised when servicing involves focusing the laser Such oper...

Page 148: ...ed from the laser di ode are reflected by this mirror As the po lygonal mirror is rotated by the polygonal mirror motor the direction of the reflected laser light moves in sync with the rotation The direction of movement is the primary scanning direction of the image with each single scan ending in one plane of the po lygonal mirror As the polygonal mirror has six planes six scans are completed in...

Page 149: ...nned on the drum at equal speeds Fig 8 2 3 Pyramidal error compensation The reflected face on polygonal mirror is tilted in either of two directions for the per fect vertical direction Deviation of the laser light for the perfect horizontal caused by this reflected face s pyramidal error is com pensated The section s shape of the laser beam on the drum is compensated Fig 8 2 4 4 HSYNC detection Th...

Page 150: ... Drive PWA This control board has the following functions APC control function for compensating disparity in the laser intensity caused by temperature Laser ON OFF generating function Function for generating synchronizing signals in the primary scanning direction ...

Page 151: ...tained at a constant value Also as the optical out put of the semiconductor laser drops when its tem perature increases APC is also required to main tain the optical output at a constant value Fig 8 3 1 Fig 8 3 2 Block diagram Fig 8 3 2 shows a block diagram of the semiconductor laser control circuit The monitor output from the semiconductor laser is controlled for each of the semiconductor lasers...

Page 152: ...el of DP2500 series Notes 1 When attaching the shield tape be sure to use new shield tape 2 The shield tape must be attached in the position as shown in right along the edge of the laser scanner unit with the mylar on the outside Attach the shield tape securely with no portion waved Fig 8 4 1 1 9 Detach one connector remove 3 screws and one ground plate and take out laser scanner unit The ground p...

Page 153: ...ler feed roller and registration roller 9 2 9 3 2 Tray lift shaft 9 3 9 4 Description of Operation 9 4 9 4 1 Tray section 9 4 9 4 2 Paper feeding section 9 4 9 4 3 Paper separation 9 5 9 4 4 Cassette feeding operation 9 6 9 5 Function of Each Part 9 7 9 6 Tray up Motor Drive Circuit 9 9 9 7 Disassembly and Replacement 9 10 ...

Page 154: ...ing ON and OFF the clutches Each sensor detects the transport state of the paper 9 2 Construction The paper feeding system section consists of the following parts Paper tray Tray up assembly Pickup feed roller Pickup roller Paper empty sensor Pickup sensor Separate roller Feed sensor Registration roller Pinch roller 09 02 01 Pinch roller Paper tray Paper empty sensor Tray up assembly Pickup sensor...

Page 155: ...ickup feed roller turns As the registration roller clutch is turned ON the registration roller Main motor Main drive gear 2 Main drive gear 3 Main drive gear 4 Main drive gear 6 Transmission gear 3 Pickup clutch Pickup feed roller Pickup roller Registration drive gear Registration roller clutch Registration roller 09 03 01 Main drive gear 6 Registration roller clutch Registration drive gear Transm...

Page 156: ...up motor is transmitted to the tray lift shaft through each gear of the tray up assembly to turn the tray lift shaft Tray up motor Tray up gear 1 Tray up gear 2 Tray up gear 3 Tray up gear 4 Tray up gear 5 Tray lift shaft 09 03 02 Tray up gear 1 Tray up motor Tray up gear 3 Tray up gear 4 Tray up gear 5 Tray up gear 2 ...

Page 157: ...p lever is pushed by the hook of the paper cassette in the direction of the arrow As the pickup lever is pushed the pickup shaft turns and the pickup arm and pickup roller descend of their own weight The driving force of the main motor is transmitted to the clutch through each gear of the main drive gear assembly As the pickup clutch is turned ON the pickup feed roller turns causing the pickup rol...

Page 158: ... slip in the arbor R torque limiter However if multiple sheet feeding occurs since the friction between the sheets is small the lower sheet is forcibly separated from the upper sheet and is sent back in the direction of the by the separate roller The upper sheet is fed in the direc tion of the arrow by the feed roller 09 04 04 09 04 03 Examples If only sheet of paper arrive at the separate roller ...

Page 159: ... the paper cassette is mounted again the tray ascends causing the presence or absence of paper to be detected C Paper feeding 1 When the pickup clutch is turned ON the power of the main motor is transmitted to the pickup feed roller through each gear for rotation 2 The rotation of the pickup feed roller is transmitted to the pickup roller through the belt 3 The paper is transported from the paper ...

Page 160: ...ion between the pickup feed roller paper and separate roller When a single sheet of paper has been transported the separate roller turns by means of the power of the pickup feed roller 5 Pickup clutch When transporting the paper from the paper cassette the clutch is turned ON to transmit the power of the main motor to the pickup feed roller 6 Main drive gear assembly The main motor gear assembly t...

Page 161: ...paper empty sensor detects the presence or absence of paper in the paper cassette 12 Pickup sensor The pickup sensor detects that the tray of the paper cassette has been lifted to the specified posi tion The tray is lifted until the pickup roller is pushed by the tray to turn OFF the pickup sensor 13 Feed sensor The feed sensor detects the transport of the paper by the PU guide assembly Registrati...

Page 162: ...inals for the signals from the I O port GA 1 In the control section the motor is controlled ON and OFF based on the signals from the I O port GA 1 For the control refer to the table below 1 2 3 4 5 6 7 IN1 IN2 M GND M N C VCC Control logic Overheat protection circuit Overcurrent protection circuit IN1 IN2 M M H H L L BRAKE L H L H CCW upward H L H L CW downward L L OFF high impedance STOP Input Ou...

Page 163: ...e holder assembly 1 Remove paper cassette See Fig 2 6 12 2 Release 4 hooks and remove separate holder assembly B Separate roller 1 Remove paper cassette See Fig 2 6 12 2 Remove separate holder assembly See Fig 9 7 1 3 Lift separate roller lever and remove separate roller assembly 4 Remove arbor F draw out shaft and remove separate roller separate spring arbor R and spring cover in this order Notes...

Page 164: ...h it 2 Remove paper cassette See Fig 2 6 12 3 Remove right cover R or upper right cover R and lower right cover R See Fig 2 6 15 and 2 6 15 1 4 Remove separate holder assembly See Fig 9 7 1 5 Remove 2 screws and remove pickup assembly F Pickup roller 1 If an ADU MD 0101 and or SFB MY 1016 are attached to the copier detach it 2 Remove paper cassette See Fig 2 6 12 3 Remove right cover R or upper ri...

Page 165: ...ion of Drive System 10 1 10 2 Description of Operations 10 2 10 2 1 Part A 10 2 10 2 2 Part B 10 3 10 2 3 Part C 10 4 10 3 Disassembly and Replacement 10 6 10 4 Main Motor 10 12 10 4 1 Main motor drive 10 12 10 4 2 Control signals 10 13 ...

Page 166: ...en by the main motor Fig 10 1 1 Drive system Rear side view 10 1 1 PPS2 Exit drive gear 1 Exit roller Driven by ADU ADU gear Exit drive gear 6 Drum drive gear Coupling Developer drive pulley Coupling Registration roller Clutch Timing belt 309 Cassette feed roller Pick up clutch Cassette feed gear 8 SFB gear 2nd feed roller Clutch PFU gear Cassette feed gear 6 Timing belt 176 Main motor HR drive ge...

Page 167: ...ng gear train from the main motor drives exit drive gear 6 This gear transmits the drive from the ADU to the exit roller while the ADU is attached When the ADU is attached the gear cuts off the drive from the main motor and starts to transmit the ADU drive Therefore the exit roller is always driven by the ADU even in one side printing when the ADU is attached Exit drive gear 7 The driving gear tra...

Page 168: ...rive The driving gear train from the main motor drives the drum drive shaft and coupling The coupling part is fit to the drum thereby driving the drum Developer Drive The main motor transmits the drive to the developer drive pulley via tim ing belt 176 causing the developer connected with the coupling to be driven 10 2 2 PPS2 Main drive gear assembly Timing belt 176 Developer drive pulley Coupling...

Page 169: ...om the main motor drives the cassette feed roller gear Cassette feed gear 8 The driving gear train from the main motor drives cassette feed gear 8 When connected to this gear the SFB is driven Cassette feed gear 6 The driving gear train from the main motor drives cassette feed gear 6 When connected to this gear the PFU is driven 10 2 3 1 PPS2 Registration roller Clutch to Main motor Cassette feed ...

Page 170: ...e drive is transmitted to the gears of the RGST CLT and OCF CLT clutches and these gears rotate However when the clutches are turned off the respective rollers do not rotate When paper is picked up from the option cassette the OCF CLT is turned on causing the 2nd feed roller to rotate At this time the clutch pulley prevents timing belt 309 from rotating The registration roller does not rotate eith...

Page 171: ... the toner cartridge and the process unit 6 Detach rear cover See Fig 2 6 1 7 Detach ozone cover See Fig 2 6 10 8 Detach paper tray cover See Fig 2 6 11 9 Remove PC I F PWA See Fig 2 6 27 10 Remove high voltage power supply See Fig 2 6 28 and 2 6 29 11 Release the spring 12 Remove 2 screws release the timing belt 309 and remove cassette feed gear 2 assembly 029 030 2 030 1 Fig 10 3 1 15 Remove 2 s...

Page 172: ...es 1 If a STP KK 1600 is attached to the copier disconnect the power cable 2 Detach the manual pocket 3 Detach the toner cartridge and the process unit 4 Detach rear cover See Fig 2 6 1 5 Detach 2 connectors form the PWA 6 Remove 3 screws and remove main motor 7 1 If the main motor is without the flange to the pulley attach it in the reverse procedure Notes 1 After attaching the main motor rotate ...

Page 173: ...the main drive gear assembly is at tached adjust it by referring to the Service Handbook See chapter 1 9 Fig 10 3 7 DP2000 2500 series 1 If STP KK 1600 is attached to the copier dis connect the power cable 2 Detach the manual pocket 3 Detach the toner cartridge and the process unit 4 Detach rear cover See Fig 2 6 1 5 Remove PC I F PWA See Fig 2 6 27 6 Remove 3 screws to remove the drum drive shaft...

Page 174: ...ing it downward Notes 1 After attaching the main motor rotate the main motor to make sure that the cou pling of the process unit rotates 2 Seeing from the gap of the main drive gear cover assembly confirm that the tim ing belt is securely installed Fig 10 3 9 031 4 Screw Timing belt 176 Connector Main motor ...

Page 175: ... at tached to the copier detach it 6 Detach the toner cartridge and the process unit 7 Detach rear cover See Fig 2 6 1 8 Detach ozone cover See Fig 2 6 10 9 Detach paper tray cover See Fig 2 6 11 10 1 Detach right cover R See Fig 2 6 15 10 2 Detach upper right cover R See Fig 2 6 15 1 11 Remove paper guide B and side cover assem bly See Fig 2 6 16 and 2 6 17 12 Remove PC I F PWA See Fig 2 6 27 13 ...

Page 176: ... Fig 2 6 15 1 4 Loosen one screw remove bushing plate and detach the relay connector Fig 10 3 12 5 Detach 2 stop rings slide bushing in the direc tion of the arrow and remove registration roller assembly Fig 10 3 13 036 6 Detach stop ring and remove cassette feed gear 1 regiatration roller clutch and regiatration wheel in this order 035 Connector Bushing plate Screw Registration roller assembly St...

Page 177: ...motor drive circuit detects the rotor position in the motor and the rotational frequency FG pulse It compares the detected rotational frequency with the MMCLK signal in terms of phase and speed It adjusts the excitation timing to eliminate the difference in each comparison and control the rotation of the motor When the difference in each comparison is then eliminated and the rotation stabilizes th...

Page 178: ...in motor 10 4 2 Control signals 1 MMCLK signal Reference clock signal for rotational speed 2 MMDIR signal DP2000 2500 series Rotational direction setting signal Low level Rotates counterclockwise as viewed from the output shaft High level Rotates clockwise as viewed from the output shaft 3 MMBRK signal DP2000 2500 series Rotational brake signal Low level Brake ON High level Brake OFF 4 MMON signal...

Page 179: ...eneral Description 11 1 11 2 Construction 11 1 11 3 Drive Description 11 2 11 4 Function of Each Part 11 3 11 5 High Voltage Output Control Circuit 11 4 11 5 1 Outline 11 4 11 5 2 Control method 11 4 11 6 Disassembly and Replacement 11 7 ...

Page 180: ...so transfers a toner image on the drum to paper and separates the paper from the drum 11 2 Construction The drum related section consists of the following parts Drum Discharge LED Main charger Transfer charger Separation charger Drum shutter Paper guide assembly Vacuum fan motor 11 02 01 Main charger Drum shutter Separation charger Transfer charger Drum Discharge LED Process unit Paper guide assem...

Page 181: ...um drive gear Drum 2 Drum shutter 11 03 01 Main motor Drum drive gear Drum Main drive gear 5 Drum shutter is closed Drum shutter is opened When the side cover assembly is closed the lever of the fuser unit is pushed Then the lever pushes the rod guide so that the rod guide pulls the shutter link to open the drum shutter 11 04 01 Rod guide Drum Drum shutter Shutter link Lever Lever Rod guide Shutte...

Page 182: ...otential before the charging process is again initiated 4 Transfer charger Transfer the toner on the drum to the copy paper When high voltage is applied to this charger wire the air around the wire is ionized electrostatically charged The ionized air is attracted to the backside of the copy paper This phenomenon is referred to as corona discharged The backside of the copy paper is positively plus ...

Page 183: ...al The D A converter converts the input data to a GVR signal grid reference voltage signal in analog form and sends it to the HVPS The HVPS generates high voltage based on the voltage value of the GVR signal and delivers it to the grid Charging Main charger The I O port GA 2 IC6 turns the CCON signal main charger control signal to Low level The HVPS generates constant current and delivers it to th...

Page 184: ...tial operation and the delivery of negative voltage during printing operation Only during the delivery of positive voltage the development bias voltage is delivered or cut off synchro nizing with the timing of the SPON signal separation charger control signal When the SPON signal is at Low level the positive voltage is delivered Transfer Transfer charger The CPU IC66 loads reference voltage data f...

Page 185: ...sends it to the HVPS The I O port GA 2 IC6 turns the SPON signal separation charger control signal to Low level The HVPS generates current based on the voltage value of the SPDVR signal and delivers it to the separation charger Guide bias Paper guide plate Pinch roller The I O port GA 2 IC6 turns the SPON signal separation charger control signal to Low level The I O port GA 2 turns the PGON signal...

Page 186: ... guide roller bushes one guide roller gear 2 guide roller collars and 2 drum collars Note After the guide roller assembly is attached the guide roller should rotate smoothly Fig 11 6 2 C Separation charger wire transfer charger wire 1 If an ADU MD 0101 is attached to the copier open it 2 Open side cover See Fig 10 3 2 3 Detach the charger unit Fig 11 6 1 4 Peel off the front and rear protection sh...

Page 187: ... 6 Detach 2 dampers Fig 11 6 5 7 Release the spring and detach the separation and transfer charger wires Note Be careful handling the wires 11 6 4 11 6 5 11 6 6 Charger unit Transfer charger wire Wire Spring Spring Separation charger wire Damper Damper Damper Guide roller Separation charger guide Charger unit Hook Hook Hook Fig 11 6 6 ...

Page 188: ... 12 1 12 2 Construction 12 1 12 3 Drive Description 12 2 12 4 Function of Each Part 12 5 12 5 Toner Control Circuit 12 6 12 5 1 Outline 12 6 12 5 2 Toner empty detection circuit 12 6 12 5 3 Toner supply motor 12 7 12 6 Disassembly and Replacement 12 8 ...

Page 189: ...static latent image on the drum surface to an image visible to the naked eye 12 2 Construction The developer section consists of the following parts Magnetic roller Doctor Agitator Auger Toner empty sensor Toner cartridge auger 12 02 01 Toner empty sensor Doctor Drum Magnetic roller Agitator Toner cartridge auger Auger Toner cartridge Process unit ...

Page 190: ...tor and auger 12 03 01 12 03 02 Magnetic roller drive gear Developer drive gear 4 Developer drive gear 5 PU pulley Agitator drive gear Developer drive gear 3 Developer drive gear 2 Developer drive gear 1 Developer drive gear 6 Developer drive gear 7 Developer drive gear 8 Developer drive gear 3 Auger drive gear ...

Page 191: ...itted to them through each gear PU coupling Main motor drive assembly PU pulley Developer drive gear 1 Developer drive gear 2 Developer drive gear 3 Magnetic roller Developer drive Developer drive Agitator drive drive gear gear 4 gear 5 gear Magnetic roller Agitator Developer drive gear 6 Developer drive gear 7 Developer drive gear 8 Auger drive gear Auger ...

Page 192: ...r cartridge auger turns as the driving force of the toner supply motor is transmitted to them through each gear Toner supply motor Toner supply gear Toner supply coupling Toner cartridge auger 12 03 03 Toner cartridge auger Toner supply gear Toner supply coupling Toner supply motor Toner cartridge ...

Page 193: ...s the thickness of the toner layer on the magnetic roller surface as specified to allow toner to pass between the magnetic roller and the drum 3 Agitator The agitator supplies toner in the developer unit to the magnetic roller 4 Auger The auger delivers the toner supplied from the toner kit to the developer unit 5 Toner empty sensor The toner empty sensor detects the presence or absence of toner i...

Page 194: ...r empty sensor performs oscillation by the TES signal At this time if there is much toner in the process unit the oscillation of the sensor is obstructed due to the pressure of the toner thus causing the waveform of the TES signal to change On the other hand if there is not much toner in it the pressure of the toner decreases to cause the sensor to perform oscillation so that the waveform of the T...

Page 195: ...ignal Toner supply motor drive signal of the I O port GA 1 IC7 becomes H level IC5 is turned on The 24V power supply supplies current to IC5 via the motor winding the motor rotates When TSMON signal becomes L level IC5 is turned off The current which was flowing in the motor winding flows via the route of diode It decreases at the rate of the time constant determined by the inductance and resistan...

Page 196: ...ss unit 4 Detach rear cover See Fig 2 6 1 5 Remove MAIN PWA See Fig 2 6 25 6 Detach the connectors from RELAY PWA CN32 CN39 CN54 and release the clamp 084 083 082 RELAY PWA Front cover CN39 CN32 CN54 Clamp Side cover Screw Screw Screw DEV motor assembly Fig 12 6 1 7 If an ADU MD 0101 is attached to the copier open it 8 Open side cover 9 Open front cover Fig 12 6 2 10 Remove 3 screws and remove DEV...

Page 197: ...13 CLEANER SECTION 13 1 13 1 General Description 13 1 13 2 Construction 13 1 13 3 Drive Description 13 2 13 4 Function of Each Part 13 3 ...

Page 198: ...the residual toner from the drum surface and carries it to the toner bag of the toner cartridge 13 2 Construction The cleaner section consists of the following parts Main blade Recovery blade Cleaner paddle Toner recovery auger 13 02 01 Toner recovery auger Recovery blade Drum Main blade Cleaner paddle Toner cartridge Process unit ...

Page 199: ...ner paddle and toner recovery auger turn as the rotation of the drum is transmitted to them through each gear Drum Drum gear Cleaner paddle drive gear Cleaner paddle Toner recovery auger gear Toner recovery auger 13 03 01 Toner recovery auger drive gear Drum Cleaner paddle drive gear Drum gear ...

Page 200: ... at a constant pressure by weight 2 Recovery blade Catches the toner after it is scraped off by the main blade 3 Cleaner paddle The cleaner paddle conveys the residual toner collected on the recovery blade to the toner recovery auger 4 Toner recovery auger Carries scrapped residual toner to the toner bag 5 Toner bag Stores the scraped residual toner carried by the toner recovery auger ...

Page 201: ...ription of Operations 14 3 14 4 1 Fuser unit 14 3 14 4 2 Exit unit 14 3 14 5 Functions of Each Part 14 4 14 5 1 Fuser unit 14 4 14 5 2 Paper exit unit 14 5 14 6 Heater Control Circuit 14 6 14 6 1 Temperature detection section 14 6 14 6 2 Temperature detection by the thermistor 14 9 14 7 Disassembly and Replacement 14 10 ...

Page 202: ...nded to the paper tray cover 14 2 Construction The fuser unit consists of the following parts Heater lamp Heater roller Pressure roller Separation claw Cleaner fuser roller Heater thermistor Fuser thermostat The exit unit consists of the following parts Exit roller Pinch roller Exit guide Exit sensor 14 02 01 Heater roller Exit unit Exit guide Exit sensor Fuser unit Pressure roller Cleaner fuser r...

Page 203: ...itted to them through each gear HR drive gear 3 HR drive gear 2 Heater roller Pressure roller Cleaner fuser roller HR drive gear 1 Exit drive gear 7 Exit drive gear 3 Exit drive gear 2 Exit drive gear 1 Exit roller shaft 14 03 01 HR drive gear 3 Exit drive gear 2 Exit unit Exit drive gear 3 Exit drive gear 7 Fuser unit Pressure roller Cleaner fuser roller HR drive gear 2 Heater roller Exit drive g...

Page 204: ...oller surface and the pressure of the pressure roller respectively The temperature of the heater roller is controlled by turning on or off the heater lamp according to the value detected by the thermistor If the heat roller temperature exceeds the specified temperature due to an abnormal condition the supply of the electric power to the heater lamp is stopped by the thermostat The paper on which f...

Page 205: ...The separation claws separate the paper affixed to the heater roller 5 Cleaner fuser roller The cleaner fuser roller is attached so as to contact the pressure roller to remove the toner and paper scraps that have stuck to the heater roller during the fusing the process 6 Heater thermistor 1 center section The thermistor detects the temperature of the heat rollers so that it is maintained within a ...

Page 206: ...2 Paper exit unit 1 Exit roller The exit roller turns as the power of the main motor or ADU motor Upper is transmitted to it through the gear of the fuser thereby transporting the paper 2 Pinch roller The pinch roller helps the exit roller transport the paper The pinch roller is pressed against the exit roller by the spring so that it is turned by the power of the exit roller 3 Exit sensor The exi...

Page 207: ...is displayed if the heat roller temperature is below 40 C the output voltage of heater thermistor 1 is 0 1599V continuously for 500 milliseconds 25 seconds immediately after the start of warming up immediately following the power ON or the start of warming up at the time of restoration from the Super Power Save mode 2 Thermistor abnormal after error diagnosis during warming up SERVICE CALL C43 is ...

Page 208: ...r with the thermistor heater status counter 1 or below if the copier becomes ready nor mally the counter is cleared to 0 After service calls C41 to C45 occurred and the thermistor and heater lamp have been repaired or replaced if turning the power ON does not turn the heater lamp ON and an error occurs again use code 400 in the 08 mode to check the thermistor heater status counter and clear it to ...

Page 209: ...all the data inside SRAM 2 Relationship between the thermistor output voltage and heat roller temperature Approx 2 33V when the temperature is 190 C approx 2 53V when the temperature is 200 C and approx 0 1599V when the temperature is 40 C 3 Relationship between the heat roller surface temperature and the heater thermistor 1 resistance Fig 14 6 1 4 Temperature control at heat roller ends During mu...

Page 210: ...Heater thermistor 1 and R337 The surface temperature of the heat roller varies The resistance of the heater thermistor 1 changes The input voltage changes The input voltage is converted to digital data by the A D converter and output to the register of the system control GA The CPU reads this value and detects a change in the data to judge if the heat roller temperature is normal or abnormal 14 06...

Page 211: ... an ADU MD 0101 and or SFB MY 1016 are attached to the copier detach it 1 2 Open ADU MD 0101 if it is attached 2 1 Detach right cover R See Fig 2 6 15 2 2 Detach upper right cover R See Fig 2 6 15 1 3 Detach 2 connectors remove 2 screws and remove fuser unit Note The fuser unit is to be attached by follow ing the procedures described below 1 Be sure to pass the heater thermistor harness through th...

Page 212: ...and open fuser front cover 3 Remove the fuser front cover 02 01 Fig 14 7 2 Screw Screw Hook Heater thermistor 086 Hook B Heater thermistor 1 Remove fuser unit See Fig 14 7 1 2 Detach 2 screws release 6 hooks and remove heater thermistor Notes 1 Never touch or bend the tip of the heater thermistor 2 When attaching the heater thermistor its tip should contact with the heater roller Also attach the h...

Page 213: ...g 088 D Housing 1 Remove fuser unit See Fig 14 7 1 2 Remove the fuser front cover See Figs 14 7 3 and 14 7 4 3 Remove 2 screws and detach the housing 02 01 4 Remove the spring from the fuser unit and de tach the heat roller separator 5 Remove the spring from the heat roller sepa rator Fig 14 7 5 Spring Heat roller separator 087 3 C 2 Heat roller separator 1 Remove fuser unit See Fig 14 7 1 2 Loose...

Page 214: ...screw Fig 14 7 8 Screw Spring plate 089 2 02 01 Fig 14 7 8 1 089 3 Screw Fig 14 7 7 Screw Housing assembly 089 1 Screw E Fuser thermofuse fuser front cover knob type DP1600 series 1 Remove fuser unit See Fig 14 7 1 2 Remove heater thermistor See Fig 14 7 2 3 Remove 2 screws and detach the housing as sembly 4 Loosen 2 knobs and detach the fuser front cover Fig 14 7 7 1 089 4 Fuser front cover Knob ...

Page 215: ...ee Fig 14 7 1 2 Remove heater thermistor See Fig 14 7 2 3 Remove 2 screw and detach the housing as sembly See Fig 14 7 7 4 Remove the heat roller separator See Fig 14 7 5 and 14 7 5 2 5 Release 2 hooks to detach the partition plate 7 Remove 3 screws A type for NAD TWD SAD models or 4 screws B type for ASD AUD CND MJD models to release the heater cover assembly Fig 14 7 9 8 Remove 2 screws and deta...

Page 216: ... is ensured F HR drive gear 1 DP1600 series 1 Remove fuser unit See Fig 14 7 1 2 Remove heater thermistor See Fig 14 7 2 3 Remove the housing assembly See Fig 14 7 7 4 Remove the heat roller separator See Fig 14 7 5 and 14 7 5 2 5 Release the heater cover assembly See Figs 14 7 8 and 14 7 9 6 Remove the HR drive gear 1 Note When HR drive gear 1 is replaced apply 0 1 g of white grease molycoat HP 3...

Page 217: ... 14 7 5 and 14 7 5 2 5 Release the heater cover assembly See Figs 14 7 8 and 14 7 9 6 Remove one screw release 4 hooks and then detach the heater cover assembly DP1600 series 4 Remove the heat roller separator See Fig 14 7 5 and 14 7 5 2 5 Release the heater cover assembly See Fig 14 7 11 and 14 7 12 6 Remove 2 screw and detach the heater lamp holder 7 Remove the HR drive gear 1 8 Remove either th...

Page 218: ...r side DP2000 2500 series NAD TWD SAD models 094 3 Heater lamp Fig 14 7 21 Fig 14 7 19 Screw Heater bracket Heater lamp 094 1 DP1600 series NAD TWD SAD models 8 Remove one screw and detach the heater bracket DP1600 series 9 Remove the heater lamp CAUTION Never touch the heater lamp with your bare hands 10 Remove 2 screws and detach the heater arm holder DP2000 2500 series 11 Remove the heater lamp...

Page 219: ... roller DP1600 series 1 Remove fuser unit See Fig 14 7 1 2 Remove heater thermistor See Fig 14 7 2 3 Remove the housing assembly See Fig 14 7 7 4 Remove the heat roller separator See Fig 14 7 5 and 14 7 5 2 5 Release the heater cover assembly See Figs 14 7 8 and 14 7 9 6 Remove the HR drive gear 1 See Fig 14 7 15 7 Remove the heater lamp See Figs 14 7 17 14 7 19 and 14 7 20 8 Remove the HR drive g...

Page 220: ...shing 12 Remove heat roller Fig 14 7 25 Heat roller HR frame F assembly Heat roller bushing C ring 097 13 Remove 2 press roller bushings 14 Release the spring to remove the cleaning roller bushing Fig 14 7 26 097 1 Press roller bushing Press roller bushing Spring Cleaning roller bushing Cleaning roller bushing Spring 01 05 ...

Page 221: ...hen disassembling the fuser assembly pay special attention not to damage the heat roller press roller and cleaning roller DP2000 2500 series 1 Remove fuser unit See Fig 14 7 1 2 Remove heater thermistor See Fig 14 7 2 3 Remove the housing assembly See Fig 14 7 7 4 Remove the heat roller separator See Fig 14 7 5 and 14 7 5 2 5 Release the heater cover assembly See Fig 14 7 11 and 14 7 12 6 Remove t...

Page 222: ...0 Fig 14 7 31 15 Release the cleaning roller bushing and remove the cleaning roller Fig 14 7 32 097 2 097 3 097 4 097 5 Heat roller bushing C ring Heat roller E ring Bearing Press roller Bearing E ring Cleaning roller 13 Remove 2 screws to detach 2 washers secur ing the bearing 14 Remove the press roller by removing 2 E rings and 2 bearings Washer Screw Washer Screw 01 12 ...

Page 223: ...ER UNIT PAPER EXIT UNIT 14 22 December 2000 TOSHIBA TEC 16 Release the spring and detach the cleaning roller bushing Fig 14 7 33 Fig 14 7 34 097 6 097 7 Cleaning roller bushing Spring Cleaning roller bushing Spring 01 05 ...

Page 224: ...ch control panel front cover See Fig 2 6 7 6 Detach control panel bottom cover See Fig 2 6 8 7 Detach ozone cover See Fig 2 6 10 8 Detach paper tray cover See Fig 2 6 11 9 1 Detach right cover R See Fig 2 6 15 9 2 Detach upper right cover R See Fig 2 6 15 1 10 Detach front frame cover F R See Fig 2 6 19 and 2 6 20 11 Detach exit cover See Fig 2 6 21 12 Remove one screw holding the top cover L See ...

Page 225: ...R SUPPLY UNIT 15 1 15 1 Outline 15 1 15 2 DC Output Circuit 15 2 15 3 Heater Lamp Drive Circuit 15 4 15 4 Dump Heater Power Supply Circuit ASD AUD CND TWD SAD models 15 4 15 5 Stapler Power Supply Circuit 15 4 ...

Page 226: ...er lamp drive circuit F1 20A 125V NAD TWD SAD models 10A 250V ASD AUD CND MJD models 10A 125V NAD TWD SAD models 5A 250V ASD AUD CND MJD models 4A 125V NAD TWD SAD models 4A 250V ASD AUD CND MJD models 4A 125V NAD TWD SAD models 4A 250V ASD AUD CND MJD models Entrance ASD AUD CND TWD SAD models F3 PWS 12V 5VPS 5V HT1ON HT2ON 10 11 3 3V SG AG HL 1 AC I L 1 AC I N 2 AC O L 4 AC O N 3 HL 1 HN 3 SW O ...

Page 227: ...or the following covers are opened or closed as shown in the table below Output Cut off Output Protection An overcurrent and an overvoltage protective circuit are configured for each DC voltage output If the output is shorted for some reason or an abnormal condition occurs in a circuit these circuits prevent overcurrent and overvoltage from flowing through the entire circuitry of this machine DC V...

Page 228: ...ply sequence Fig 15 2 1 24V 24VFU1 24VFU2 200ms max 200ms max 3 135V 11 4V 11 4V 4 75V 22 8V 22 8V 4 75V OFF AC input 5V 3 3V 12V 12V 5VPS 24VSW ON ON H ON H OFF L 0ms min 0ms min 500ms max 20ms min PWS signal Close Open Front cover Open Close Close Close Side cover 15 02 01 ...

Page 229: ... supplied only when the HT1ON and HT2ON signals ASD AUD CND MJD models are LOW 15 4 Dump Heater Power Supply Circuit ASD AUD CND TWD SAD models This circuit outputs the AC power input from the inlet directly to the FUS PWA thereby supplying power to the scanner dump heater AC power is always supplied to the dump heater regardless of the ON or OFF state of the main switch 15 5 Stapler Power Supply ...

Page 230: ...16 BOARD ASSEMBLY 16 1 16 1 PWA F MAN 16 1 16 2 PWA F RLY 16 2 16 3 PWA F PIF 16 3 16 4 PWA F PNL 16 4 16 5 PWA F VR 16 4 16 6 PWA F SLG 16 5 16 7 PWA F FUS ASD AUD CND TWD SAD models 16 6 ...

Page 231: ...December 2000 TOSHIBA TEC 16 1 1600 2000 2500 PC BOARD 16 BOARD ASSEMBLY 16 1 PWA F MAN 16 01 01 ...

Page 232: ...1600 2000 2500 PCB BOARD 16 2 December 2000 TOSHIBA TEC 16 2 PWA F RLY 16 02 01 ...

Page 233: ...December 2000 TOSHIBA TEC 16 3 1600 2000 2500 PC BOARD 16 3 PWA F PIF 16 03 01 ...

Page 234: ...1600 2000 2500 PCB BOARD 16 4 December 2000 TOSHIBA TEC 16 4 PWA F PNL 16 5 PWA F VR 16 04 01 16 05 01 ...

Page 235: ... IC2 DA6 R71 DA5 R69 DA4 R67 DA7 R73 C72 108 109 144 C73 TP27 IC3 MX29F100TTC 70 IC11 ST LOUIS R148 R152 R151 R149 R150 A 1 SG TP41 CN1 15 28 33 34 16 17 15 R119 R92 IC14 LV244 30 14 29 1 2 16 17 TP33 TP34 20 L31 TP36 TP37 TP39 C139 C138 SG PG L32 PCB CONTROL IR4024K501B 94V 0 TW 5 CN9 6 1 2 12 1 CN15 TP10 IC9 SLA7044M IC10 SLA7044M TP47 13 1 1 RA1 1 24 25 IC5 1 2 LV04 48 IC15 LV244 IC13 LV04 IC12...

Page 236: ...1600 2000 2500 PCB BOARD 16 6 December 2000 TOSHIBA TEC 16 7 PWA F FUS ASD AUD CND TWD SAD models 16 07 01 ...

Page 237: ...17 WIRE HARNESS CONNECTION DIAGRAMS 17 1 ...

Page 238: ...D3 PM1OD1 79 80 PM1OD7 PM1OD5 81 82 PM1OD11 PM1OD9 83 84 PM1OD15 PM1OD13 85 86 ODACK1X LSYNC1 87 88 TX1 RX1 89 90 5V CH02 91 92 FAXDET SG 93 94 3 3V 3 3VB 95 96 12V 12V 97 98 BV 5VPS 99 100 CN6 2 2 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 9...

Page 239: ...ATA1 nStrobe DATA3 DATA2 DATA5 DATA4 DATA7 DATA6 nACK DATA8 PError Busy nAutoFd Select SG NC Logic FG SG SG SG SG SG SG SG SG CN1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 SG SG SG SG nFault nInit NC NC nSelectIn NC 27 28 29 30 31 32 33 34 35 36 DPOD1 DPOD3 31 32 NC DPORESX 33 34 RBDINX WAIT 35 36 5V G PSEL 37 38 5VPS 5V 39 40 SG 5VPS 41 42 SG PCDET 43 44 SG SG 45 46 SG ...

Page 240: ...WRSVKEY 25 26 CN9 CN60 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 FLM SD LP NC SG SCP SG 5V VO 12V LCD1 LCD1 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 PWA F VR TO VO VREF GREF CN61 1 2 3 CN61 3 2 1 PWA F OTK Option LED5X LO SWS2 LED4X SWS4 SWS3 SWC0 SWS5 SWC2 SWC1 SWC4 SWC3 SWC6 SWC5 SWC8 SWC7 SWC10 SWC9 SWC12 SWC11 SWC14 SWC13 CN62 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ...

Page 241: ...PIXA6 PIXA4 3 4 PIXA10 PIXA8 5 6 CS4XB PIXA12 7 8 PSDRASXR PBA1 9 10 SDCLK2 PSDDQMUR 11 12 PIXD2 PIXD0 13 14 PIXD6 PIXD4 15 16 PIXD10 PIXD8 17 18 PIXD14 PIXD12 19 20 3 3V SDRM2ID 21 22 SG 3 3V 23 24 PIXA1 SG 25 26 PIXA5 PIXA3 27 28 PIXA9 PIXA7 29 30 CS3XB PIXA11 31 32 PSDWER PBA0 33 34 PSDDQMLR PSDCASXR 35 36 PIXD1 PSDCKER 37 38 PIXD5 PIXD3 39 40 PIXD9 PIXD7 41 42 PIXD13 PIXD11 43 44 3 3V PIXD15 4...

Page 242: ...D6 69 70 PCIFD0 PCIFD2 71 72 BUSY SELECT 73 74 NINIT NSELIN 75 76 OPOEX NSTROB 77 78 DPOD12 DPOD14 79 80 DPOD8 DPOD10 81 82 DPOD4 DPOD6 83 84 DPOD0 DPOD2 85 86 DPOA13 DPOA15 87 88 DPOA9 DPOA11 89 90 DPOA5 DPOA7 91 92 DPOA1 DPOA3 93 94 OEPX DPORESX 95 96 RBDINX WAIT 97 98 SG SG 99 100 CN14 2 2 CN17 PWA F MAN AU1 PWA F RLY AU1 Option 2 2 PWA F MAN 9 14 SG SG 1 2 5IORDX SG 3 4 D13 D15 5 6 D9 D11 7 8 ...

Page 243: ...G 17 18 RRCON SG CN21 1 2 19 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 20 FANH FANDET 51 52 PSFANDET FANL 53 54 SPEAKER PSFANON 55 51 52 53 54 55 56 HTON1 HTON0 57 58 5VPS PWSV 59 60 56 57 58 59 60 S H LPWR 1 2 LDENX VIDEOX 3 4 LSU5V SG 5 6 HSYNC SG 7 8 CN18 CN169 PWA LDR LSU PWA PDV PG 24V READY START CLK 1 2 3 4 5 CN26 CN168 SG OHP 71 72 CCON SG 73 74 TCHON...

Page 244: ...S B 6 CN7 1 2 3 4 5 6 7 8 9 10 11 SCN MOT CN9 SG 5V 21 22 SG CLP0 23 24 SHD2 SHD10 25 26 SHD11 SG 27 28 SG MPX 29 30 AG 12V 1 2 AG 12V 3 4 5V SG 5 6 CK2A SG 7 8 SG CK1A 9 10 CCDRS CCDCP 11 12 CK2B SG 13 14 SG CCDSH 15 16 AG AG 17 18 SG 12V DOA3 SG DOA5 DOA4 DOA6 SG SG DOA7 SG ADCK SG 5V AMPL1 AMPL0 AGCD0 AMPL2 AGCD2 AGCD1 AGCD4 AGCD3 AGCD6 AGCD5 AMPWR AGCD7 SG AMPRO DOA0 3 3V DOA2 DOA1 19 20 10 9 ...

Page 245: ... 22 23 24 25 26 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 NC NC NC NC NC NC NC FG CN1 RADF Option 21 22 23 24 25 26 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 10 11 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 CN1 CN2 INV EXPO AT INV EXPO AW EXPO LAMP AT EXPO LAMP AW CN2 LAMP 24V 1 2 PG 3 1 2 3 1 2 3 4 5 NC LAMP NC NC LAMP 3 2 1 1 2 3 4 LAMP NC LAMP NC 5V 7 SG SENS3 8 9 3 2 1 3 2 1 5V 10 SENS4...

Page 246: ...DP2000 2500 series CN23 3 3V HT1ON 1 2 5VPS 5V 3 4 12V 12V 5 6 PG 24V 7 8 PG VM 9 10 PWS HT2ON 11 12 SG SG 13 14 AG SG 15 16 PG 24VF1 17 18 CN6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 24VF2 PG 19 20 19 20 CN22 3 3V HT1ON 1 2 5VPS 5V 3 4 12V 12V 5 6 PG 24V 7 8 VM 9 10 PWS HT2ON 11 12 SG SG 13 14 AG SG 15 16 PG 24VF1 17 18 CN6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 PG ASD AUD CND TWD SAD ...

Page 247: ... charger Paper guide plate Pinch roller MMTR ON CN30 1 MMTR BRK MMTR RFL 2 3 PLL OK 4 5V SG 5 6 MMTR FG MMTR DIR 7 8 1 1 1 1 OUT2 OUT3 OUT4 OUT5 OUT6 1 OUT6 2 1 1 1 1 1 1 1 1 1 1 1 OUT1 1 1 1 1 MD MOT AT DP1600 series DP2000 2500 series MMTR ON CN29 1 NC MMTR RFL 2 3 PLL OK 4 5V SG 5 6 MD MOT AW VM CN28 1 PG PG 2 3 VM 4 VM 5 CN1 1 2 3 4 5 6 7 8 9 10 5 4 3 2 1 6 5 4 3 2 1 8 7 6 5 4 3 2 1 5 4 3 2 1 ...

Page 248: ... CN156 SG 4 DHPON 5 6 5V CN45 CN179 CN173 FDS2ON SG 1 2 3 EXT SEN FDSLED CN34 FANL FANH 1 2 VCM FAN 1 2 3 4 5 6 7 8 9 10 11 12 2 1 1 2 3 2 1 1 2 3 3 2 1 3 2 1 2 1 1 2 NC NC NC CN37 24V SG 1 2 PUCON LPSON 3 4 LUMON 5V 5 6 24V SG 7 8 PESON 9 10 24V 5V 11 12 PRCON CN183 CN180B CN180A CN180B CN180A PU CLT T UP SEN CN181 CST SW PE SEN CN182 CN164 T UP MOT CN155 CN159 RGST CLT CN38 CASSETTE NC 1 2 SG 3 ...

Page 249: ... 1 2 3 4 ADU Option CN208 PFUPEMP SG A1 A2 SG 5V A3 A4 5V PFUTUP A5 A6 24V PFUPCLT A7 A8 5V A9 A10 SIZPFU1 1 2 3 4 5 6 7 8 9 10 SG A11 B1 PFUCNT NC B2 B4 SG B3 SIZUPFU0 11 12 B5 PFUCOV SG B6 B7 NC PFUTRM A B8 B10 NC B11 SG B9 PFUTRM B CN205 PFUFD SW SG 1 2 PFUFDCLT 5V 3 4 1 2 3 4 3 2 1 1 2 3 24V 5 CN206 CLK C NC A1 A2 SCSW C CLK B A3 A4 DRV6 DRV7 A5 A6 DRV4 DRV5 A7 A8 DRV3 A9 A10 DRV2 1 2 3 4 5 6 ...

Page 250: ...FANH FANL FANH 1 2 3 4 POW FAN PU FAN 1 2 1 2 2 1 JSP OCT Bridge cover Option CN41 OFFSET1 OFFSET2 1 2 24V PG 3 4 JFLS2ON JSSON 5 6 JCOSON JOB JAM 7 8 JOB SW 9 10 F SELECT 1 2 3 4 5 6 7 8 9 10 JCONECT 11 12 SG FLS1ON 13 15 JPOSON 14 5V 11 12 CN39 TSMON NC VM 1 2 3 CN322 TS MOT 1 2 3 4 5 6 7 8 9 10 11 12 13 15 14 15 14 13 12 11 10 9 8 7 6 5 4 3 1 2 Fig 17 1 13 17 01 13 ...

Page 251: ...P2000 2500 series Option PWA F MAN 13 14 PWA F RLY 9 10 24VF2 1 SG PG 2 3 5V 4 CN48 5V SG 1 2 A3 A1 3 4 A7 A5 5 6 D2 D0 7 8 D6 D4 9 10 5IOWRX SG 11 12 5V IOCS11X 13 14 SG SG 15 16 A2 5V 17 18 A6 A4 19 20 D1 A8 21 22 D5 D3 23 24 SG D7 25 26 5RESETX 5IORDX 27 28 IPCDET 5V 29 30 Fig 17 1 14 17 01 14 ...

Page 252: ...RNESS CONNECTION DIAGRAMS CN16 for Coin vendor DP2000 2500 series PWA F MAN 14 14 PWA F RLY 10 10 24V 1 PG ON 2 3 CN42 SG 5V 1 2 COINVDI2 COINVDI1 3 4 COINVDO2 NC 5 6 COINVDO4 COINVDO3 7 8 COINVDO6 COINVDO5 9 10 COINVDO8 COINVDO7 11 12 Fig 17 1 15 17 01 15 ...

Page 253: ...18 PAGE MEMORY BOARD 18 1 18 1 Introduction 18 1 18 2 Structure 18 2 18 2 1 Interfaces 18 2 18 2 2 Schematic 18 3 18 3 Description of Function 18 5 18 3 1 Basic functions 18 5 18 3 2 Editing 18 10 ...

Page 254: ...ts the following basic functions 1 Scanning Writes digital image data scanned on the digital copier into the page memory 2 Printing Outputs image data in the memory to the printer 3 Compression decompression Compresses image data when writing image data to memory at the scan ner processor and decompresses the image data when outputting to the printer at the printer output processor 4 Editing Execu...

Page 255: ...andles the control data for controlling the page memory Board 2 Scanner interface Image data scanned by the digital copier are loaded to page memory from the external interface of the scanner processor 3 Printer interface Image data in page memory are output to the laser controllers in the digital copier s printer by the external interface of the digital copier relay processor 18 02 Memory cover P...

Page 256: ...e page memory board Page Memory Board Schematic 1 Page memory 32 MB of memory DRAM are mounted on the main board as standard The Option page memory board specification DRAM The page memory board is provided with two slots for mounting the main PC Board Adding on this memory board increases the memory to 128 MB Control ASIC I O control Address control Data control Rotation merger control Compressio...

Page 257: ...mpression decompression LSI and the page memory Merges image data in the page memory with image data scanned by the digital copier and writes image data into the page memory Rotation merge control This ASIC executes the following operations Receives and wait for digital image data transfer control between the digital copier and the page memory PC board on the scanner and printer interface Swaps da...

Page 258: ...igital copier 2 Sort copying This operation is achieved by the compression decompression function on the page memory while being compressed Image data stored in the memory are then decompressed at each page and printed Assuming that printing of N number of copies has been set decompression and printing at each page are repeated for N number of times Example The following describes an example of ex...

Page 259: ... PM PM Decompression Output PM PM IM Input Compression Roation Image memory module Image memory module CODEC CODEC Printer Scanner Memory module Memory module Execution process Alternation sort copying Input process Decompression process PM Page Memory IM Image Memory ...

Page 260: ... End NO YES YES NO 1 2 3 1 2 3 1 2 3 Original to be fed by ADF present Continuous copy quantity conditions met Final original of nth copy printed Original fed to exposure position by ADF Original scanned Image data compression Stored image data decompressed Even numbered copies only rotated 1 sheet printed Stored in image memory Image data decompressed 1 sheet printed 1st copy 2nd copy 3rd copy ...

Page 261: ...zine sorting function Execution process Magazine sorting Image memory module Image memory module Image memory module IM PM PM 2in 1 4in 1 bind Image memory module IM Decompression Compression PM PM IM Input Compression IM PM PM Decompression Output Rotation CODEC CODEC Scanner CODEC Printer CODEC Memory module Memory module Memory module Input process Compression process Decompression process PM P...

Page 262: ... 1 and 8 are decompressed and stored as 1 page Page 3 and 6 are decompressed and stored as 1 page Page 4 and 5 are decompressed and stored as 1 page Printed on copy A rear side Printed on copy front side stacked to ADU A Printed on copy front side stacked to ADU B Printed on copy B rear side End Example The following describes an example where eight single sided A4 size originals are output onto A...

Page 263: ...e of a single sheet of paper The orientation of the printed copy can be selected for each of these modes as Follows 2in 1 copy 4in 1 copy 1 1 2 2 Main scanning Main scanning Sub scanning Normal 1 2 Main scanning Sub scanning 180 deg rotation 1 2 3 4 Main scanning Main scanning Sub scanning Normal Sub scanning 1 2 3 4 Sub scanning 180 deg rotation Main scanning 1 4 3 2 Using the ADF Output of the A...

Page 264: ...1 1 KANDA NISHIKI CHO CHIYODA KU TOKYO 101 8842 JAPAN ...

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