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15. MAIN CONTROL PWB

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Summary of Contents for Z-21

Page 1: ...ASSEMBLY ASSEMBLY 16 9 SIMULATION AND SELF DIAGNOSICS 22 10 ADJUSTMENTS 27 11 DRUM CARTRIDGE REPLACEMENT 30 12 CIRCUIT DIAGRAM 32 CONTENTS SHARP CORPORATION This document has been published to be used for after sales service only The contents are subject to change without notice Parts marked with is important for maintaining the safety of the set Be sure to replace these parts with specified ones ...

Page 2: ... Upper heat roller disassembly 21 15 Paper feed unit and resist roller removal Z 26 21 9 SIMULATION AND SELF DIAGNOSTICS 22 1 Simulation 22 2 Self diag functions 26 10 ADJUSTMENTS 27 1 Lead edge adjustment 27 2 Exposure adjustment 28 11 Drum cartridge replacement 30 1 Drum cartridge replacement timing 30 2 Drum cartridge replacement procedure 30 2 1 Drum cartridge replacement 30 2 2 Counter clear ...

Page 3: ...eed Overall stack thickness 5 0mm max About 50 sheets 75g m2 20 lb paper about 40 sheets 80g m2 21 lb paper Developing system Dry type two component magnetic brush developing Fusing system Heat roller Light source Tungsten lamp Power source Voltage for each destination 10 15A 50 60Hz common Power consumption Max 690W 10WH or less in auto power shut off External dimensions Z 26 378 W x 353 D x 98 H...

Page 4: ...ut pressing this button an necessary load is applied to the drive section causing a damage Release button When moving the document table manually be sure to press and hold this button while moving Handle Fusing area Do not touch directly with hands Oil on the hand attaches to the drum and causes poor copy quality Photoconductive drum Be careful not to scratch Scratches on the drum may effect copy ...

Page 5: ...er feed tray the READY indicator turns off and copying is started in about 5 sec Auto power shut off mode In the Auto Power Shut OFF mode copy will be started in the copy condition set on the display when you press a copy key which can be canceled by entering any key CLEAR key Z 26 only Performs cancelation of the multi copy set quantity and the auto repeat function and suspends copying before and...

Page 6: ... counter read and when trouble occurs Toner save mode display lamp Displays the toner save mode selected by the copy density key TD cartridge replacement indicator When toner empty is detected at the begining of a copy run the TD cartridge replacement indicator lights up and the machine enters toner supply operation for max 60 sec The document table reciprocates max 3 times If toner supply is comp...

Page 7: ...to cause any health hazard NOTE The present recommended long term exposure limit for ozone is 0 1 ppm 0 2 mg m3 calculated as an 8 hr time weighted average con centration However since the small amount that is emitted may have an objec tionable odor it is advisable to place the copier in a ventilated area CAUTIONS 1 Do not expose the photoconductive drum to direct sunlight and do not touch the pho...

Page 8: ... the power cord into the copier and then plug the other end into the nearest outlet NOTE Be sure to insert the power cord firmly 12 Turn the power switch on When making a copy for the first time after the set up the document glass will slide back and forth and the indicator will light for up to one minute Then copying will start Front cover open button h 4 SUPPLIES 1 Drum cartridge TD cartridge It...

Page 9: ...he production Jan Sep Oct Nov Dec 1 9 0 X Y 35000019 Display position Display example 5 INTERNAL STRUCTURE 1 PWB arrangement Name Functions 1 Main PWB In addition to overall function control this PWB also functions as the copy lamp control circuit and the high voltage output circuit except for developing bias The paper exit sensor in on this PWB also 2 Power PWB This PWB supplies power to each loa...

Page 10: ...W 7 Power inlet Inlet AC cord connecting terminal 3 Sensors thermistor thermostat Name Circuit diagram code Type Function 1 Paper feed sensor PID Paper in detector Photo sensor Senses paper entry 2 Paper exit sensor POD Paper out detector Photo sensor Senses paper exit 3 Document table sensor TPS Table position sensor Photo sensor Senses the document table position 4 AE sensor AESP Auto exposure s...

Page 11: ...toner image on the drum sur face is transferred onto the copy paper Step 6 The potential on the transfer paper is neutralized and the paper is separated Step 7 Cleaning residual toner on the drum surface is collected by the cleaning blade Step 8 Photoelectric discharge residual charge on the drum sur face is neutralized 3 Detailed description of image forming process Step 1 Photoelectric discharge...

Page 12: ...as imaged areas on the drum surface In this process a bias potential is applied to the MG roller magnet roller to prevent the toner from being attracted to the residual poten tial approx 80 to 100V in the non imaged areas after exposure Step 5 Transfer The visible image toner image on the drum is transferred onto the copy paper A high potential is applied to the back of the copy paper by negative ...

Page 13: ...tential at each step Because of the developing bias toner is not attracted to the non image areas of the drum surface If for any reason the developing bias fails the toner will be attracted to the residual charge on the drum producing background in the non image areas Cleaning blabe Residual toner Toner collection unit 0 Drum surface potential White image area Canceled by developing bias Charge Ex...

Page 14: ...age loss Loss or area of the image lost on the copy 3 Specified values of void area and image loss Void area Lead edge 1 5mm max Image loss Lead edge 2mm max 2 Paper feed section 2 1 paper feed section outline The paper feed section differs greatly from the models the Z 21 and the Z 26 In the Z 26 max 50 sheets of paper can be set on the multi tray and max 20 sheets of multi copy run is available ...

Page 15: ...ent table the fusing section and the fan unit 4 Document table drive section 4 1 Outline The document table is driven by a gear unit and the endless rack which is integrated with the document table A clutch is not used for selecting feed and return The structures of the endless rack and the C bracket unit gear unit are described in the following The endless rack is composed of the feed rack and th...

Page 16: ... function 4 In the auto shut off mode if any key input is made or a paper is inserted in the case of Z 21 the power relay is turned on to turn on the heater lamp ready state When the heater lamp temperature rises above 180 C a high temperature trouble is displayed H3 lamp lights up Z 26 all lamps except for READY lamp light up Z 21 and power supply to the heater is stopped Bracket guide Rack guide...

Page 17: ...d and the machine is stopped 3 In the case of the Z 26 if the toner control sensor signal keeps HIGH during 12 sheets of multi copying the developer cartridge replacement lamp is lighted and the machine is stopped 10sec 300msec 2 4sec 1 0sec 1 0sec 200msec 5 0sec 54sec 200msec 1 9sec x 582 pulese 250msec 500msec Paper in sw Copy key TCS Toner control sensor THS Toner supply solenoid Bias DV Bias M...

Page 18: ...t Do not allow pinches of lead wires 6 Do not tighten the screws too much Avoid breaking the screw threads 1 Document cover disassembly Warp the center portion of the document cover and lift it upwards 2 Document table disassembly 1 Remove four screws which are fixing the rack cover and remove the rack cover 2 Remove the rack gear bracket Note position of each component for reassembly 3 Slide the ...

Page 19: ...WB Do not touch the fuse bulb of the lamp directly with your hand It may result in a shortened life and uneven exposure 6 AE sensor removal 1 Remove the document table 2 Remove the top cabinet 3 Remove the copy lamp unit four screws 4 Remove the screw which is fixing the AE sensor and remove the AE sensor 7 Main PWB removal 1 Remove the document table 2 Remove the top cabinet 3 Remove the fan unit...

Page 20: ... of each cable Refer to the figure above 2 The spring terminal must be on the cable terminal 5 Disconnect the connector and remove four screws and the main PWB 8 Drive unit disassembly 1 Remove the document table 2 Remove the top cabinet 3 Remove the bottom cabinet 4 Remove the drum cartridge Spring White Red Main PWB Bottom cabinet 18 ...

Page 21: ...r CN106 8 Remove the grounding cable which is fixed to the drive unit with a screw 9 Disconnect connectors CN212 and CN210 which are connected to the main PWB F Remove the main chassis from the bottom base Z 21 7 screws Z 26 8 screws G Remove the five screws which secure the drive unit and pull out the drive unit toward the rear frame and remove Motor encoder sensor PWB Motor encoder disk 19 ...

Page 22: ...rew 6 Remove the three fixing screws and remove the power PWB 11 Lower heat roller disassembly 1 Remove the document table 2 Remove the top cabinet 3 Remove the bottom cabinet and the drum cartridge 4 Remove the main chassis 5 Remove the lower heat roller 12 Heater lamp disassembly 1 Remove the document table and the top cabinet 2 Remove the screw which secures the heater lamp terminal in the rear...

Page 23: ...cratch the roller Note for assembly Be sure to insert the ring securely in the heat roller groove 15 Paper feed unit and resist roller removal Z 26 1 Remove the document table and the top cabinet 2 Remove the main chassis 3 Remove the arm A 4 Remove the two screws and an E ring which are fixing the paper feed unit 5 Forcibly pull the resist roller upwards to remove 6 Remove the paper feed unit Not...

Page 24: ...d until the end of the simulation End of the simulation To terminate total counter read press the EXPOSURE key and the mode is changed to the standby mode for the next simulation 1 2 or 3 To terminate the simulation release the short of the PWB and turn off and then on the power 1 Drum counter read Entering the simulation mode Short the main PWB pins JP208 JP206 turn on the power and 0 will be dis...

Page 25: ...owed Set a value with the copy quantity set key and press the PRINT key to establish the setting The TD cartridge replacement indicator goes off and the LIGHT exposure indicator lights up Set the digit of hundred in the same manner Then the LIGHT exposure indicator goes off and the auto exposure lamp lights up Set the digit of ten in the same manner Then the auto exposure indicator lights up and t...

Page 26: ...tored The misfeed indicator goes off Copy lamp manual normal range brightness setting When the misfeed indicator goes off the TD cartridge replacement indicator blinks Press the EXPOSURE key and turn the VR202 and the misfeed indicator will light up from blinking allowing the adjustment When the VR202 is turned clockwise the brightness is increased When the VR202 is turned counterclockwise the bri...

Page 27: ...posure can be set in three levels to adapt for deterioration of the photoconductor dirt in the optical system and the user s preference In the toner save mode the toner consumption is saved by about 20 compared with the standard setting When this correction is performed the manual exposure mode is also changed Entering the simulation Turn on the power to set the machine to the ready state or the a...

Page 28: ...he AE sensor White strip on underside of glass is dirty Full wave signal is not inputted for more than 1 5 sec Copy lamp disconnection breakage Does not light up Power PWB defect Main PWB defect All indicators except for the ready indicator blink H2 Thermistor open detection Thermistor breakage Main PWB defect All indicators except for the ready indicator blink H3 Abnormally high temperature of th...

Page 29: ...he copy exposure key Copy exposure key ON Light exposure lamp lights up and the auto exposure mode adjustment is performed The auto exposure lamp blinks Copying can be performed Cpoy exposure key ON once Auto exposure mode Copy exposure adjustment mode Copy check The auto exposure lamp lights up allow auto exposure manual adjustment with VR202 NG OK Auto exposure manual adjustment mode Turn VR202 ...

Page 30: ...lamp PWB When replacing the AE sensor When performing the exposure adjustment set the auto exposure correction mode to the standard mode For the procedure refer to 2 OPERATION PANEL AND DISPLAY FUNCTIONS 3 Display section When performing the exposure adjustment clean the AE sensor light receiving section and the reflector The simulation for the exposure adjustment is the same simulation for the le...

Page 31: ...Check that the misfeed indicator blinks and turn on the copy exposure key G Check that the toner indicator blinks and turn on the copy ex posure key again H The copy lamp lights up and the auto exposure lamp blinks I Turn on the copy exposure key once to set to the auto adjustment mode and make a copy If the copy exposure is proper the adjustment is completed If the copy exposure is not proper go ...

Page 32: ...Turn the power switch off 2 Open the front cover and pull out the TD cartridge 3 Fold up the exit tray and remove the paper tray 4 Lift the copier by the handle and stand it up with the exit area on the bottom 5 Push the tab on the bottom cover towards the rear side of the copier to open it 6 Push the bottom cover release lever to the left to remove the bottom cover 7 Push the drum cartridge relea...

Page 33: ...ndicators except A will go out The copier is now ready for operation If the three exposure indicators do not light up while pressing and holding the EXPOSURE key for more than 10 seconds turn the power switch off and then perform steps 1 and 2 again Flow of drum counter clear Whith pressing the EXPOSURE key turn on the power switch Are the indicators other than READY indicator ON Yes No Release th...

Page 34: ...U IC203 MES PWB AE sensor PWB Z 21 Copy lamp control circuit High voltage circuit Heater lamp control circuit INLET TPS HL AC RRS VH 31V THS VH 31V RFS VH 31V TCS DVB TPS PID TCS RRS A RRS B THS PFS HL DVB VD 5V V18 18V FW VH 31V VD 5V CL AC TC MC SB GB GB M VH 31V DC Power supply PWB Development cartridge Bias circuit Operation panel PWB Main PWB CPU IC203 MES PWB AE sensor PWB Z 26 Copy lamp con...

Page 35: ... signal 33 P26 A14 RRS A OUT H Paper start solenoid control signal 34 P25 A13 PR OUT H Power relay control signal 35 P24 A12 THS OUT H Toner supply solenoid control signal 36 P23 A11 PFS OUT H Paper feed solenoid control signal 37 P22 A10 MHV OUT L High voltage control signal 38 P21 A9 GBC OUT H Grid control signal 39 P20 A8 DVB OUT H Developing bias control signal 40 VSS GND IN Power GND 41 P17 A...

Page 36: ... A L F1 3 Pin PLUG NOISE FILTER MAIN SWITCH TRANS POWER VH 31V V18 18V VH M CIRCUIT LSI VD 5V GND SGND CIRCUIT SECONDARY SWITCH INTER LOCK Inlet N POWER V18 RELAY PR L 2 Pin PULG H L 165C C L 133C 100V F1 CL H L 10A 10A 10A 110V 120V F1 F2 Inlet N POWER SUPPLY PWB MAIN PWB H V G 10A 127V ...

Page 37: ...D 1 2 3 4 5 6 7 8 D C B A L F1 3 Pin PLUG NOISE FILTER MAIN SWITCH TRANS POWER VH 31V V18 18V VH M CIRCUIT LSI VD 5V GND SGND CIRCUIT SECONDARY SWITCH INTER LOCK Inlet N POWER V18 RELAY PR L 2 Pin PULG H L 165C C L 115C F1 F2 Inlet N POWER SUPPLY PWB MAIN PWB H V G ...

Page 38: ...06 3 NOUT2 R101 1M R126 Inlet N VD R121 10K 1 4W CN109 2 PGN D ZD 101 RD18EB3 A101 R126 DSA242M RGBS5 3 125V 2 0A R101 1M 1 4W F103 125V 10A F101 F102 125V 10A 250V 250V CN109 3 F W 100V 127V C109 22000p Q105 JC501 R125 10K 1 4W R124 5 1K 1 4W D102 1SR35 100A D103 1SR35 100A F103 CN110 3 ACL2 RE101 S2VB10 C106 2200uF 50V CP1 220V 240V CN101 1 VH CN102 1 CN103 1 CN109 4 250V 6 3A 250V 6 3A 250V 2 0...

Page 39: ... 7 TCS CN109 5 TPS 4 VH R106 1 5K 3W 2 CN106 1 HLL 2 6 R107 CN109 8 RRSA CN109 9 THS CN109 10 PFS CN109 11 RRSB CN109 12 H L CN109 15 PR R120 1K 1 4W HL RRSB RRSA 1 2D OPS PR VH I1 1 I2 2 I3 3 I4 4 I5 5 I6 6 I7 7 O1 16 O2 15 O3 14 O4 13 O5 12 O6 11 O7 10 COMM 9 IC101 ULN2003A CN101 2 PFS CN102 2 THS R102 270 2W CN103 3 RRS PD102 GP1S53V 1 2 3 4 Q104 DTC124ES CN109 13 DVB DVB Z 20 Z 25 OPEN R102 CN...

Page 40: ...PR R120 1K 1 4W HL RRSB RRSA 1 2D OPS PR VH I1 1 I2 2 I3 3 I4 4 I5 5 I6 6 I7 7 O1 16 O2 15 O3 14 O4 13 O5 12 O6 11 O7 10 COMM 9 IC101 ULN2003A CN101 2 PFS CN102 2 THS R102 270 2W CN103 3 RRS PD102 GP1S53V 1 2 3 4 CN111 1 DVBO CN111 2 DVBO C112 1000P 1KV R135 1MJ R133 2 2MF 1 2W D105 SHV 03 2 5 T101 R131 200KJ R127 22KJ VH CN109 13 DVB Q106 DTC124ES Q107 2SC2458 R130 18KJ R129 10KJ R128 82KJ Q108 2...

Page 41: ...SUPPLY PWB 100V SERIES JAPAN AND EX 3PIN PLUG For power unit CPWBF1018FC55 56 only 9 POWER SUPPLY PWB 100V SERIES EX 2PIN PLUG For power unit CPWBF1042FC only Destination Colombia Dominica Equador Indonesia 39 ...

Page 42: ...aysia North Yemen Saudi Arabia Singapore Special countries Sri Lanka 11 POWER SUPPLY PWB 200V SERIES EX 2PIN PLUG For power unit CPWBF1044 only Destination Algeria Argentina Bangladesh Chile Eqypt Greece India Indonesia Iran Iraq Jordan Lebanin Morocco Nigeria Oman Paraguay Paru Philippines Qatar Syria Thailand Thnisia Turkey U A E Uruguqy West Africa 40 ...

Page 43: ...4 5 3 P 3 5 D 5 5 4 P 3 6 D 6 5 5 P 3 7 D 7 5 6 P 4 0 A D T R G I R Q 5 7 P 4 1 I R Q 1 5 8 P 4 2 I R Q 0 5 9 P 4 3 R D 6 0 P 4 4 W R 6 1 P 4 5 A S 6 2 P 4 6 0 6 3 P 4 7 W A I T 6 4 IC203 H8 326 SMIP1 SMIP2 2 1D TPS PID POD 2 1D 2 1D 2 1D TCS CN203 10 DSEG6 CN203 9 DSEG5 CN203 8 DSEG4 CN203 7 DSEG3 CN203 6 DSEG2 CN203 5 DSEG1 CN203 4 DSEG0 C702 22000p I1 1 I2 2 I3 3 I4 4 I5 5 I6 6 I7 7 G 8 O1 16 O...

Page 44: ...759 10KF 5 6 7 IC703B D709 MA152K R768 100KF R769 18KF C217 0 033uF ZD701 RD18MB1 R753 3 3KF Q703 2SC2712Y D710 MA153 D711 MA153 C211 100uF 35V C212 0 1uF 3 2 1 4 11 IC703A C209 R758 3 3KF D707 MA152K R755 3 3KF R754 1K Q704 2SC2712Y R757 22KF R762 100KF R761 36KF R770 560 R765 12KF R766 12KF R767 300KF R756 12KF C208 0 47uF R764 82KF R211 1 2W R212 1 2W R752 12KF R763 3 3KF C210 0 47uF R214 100J ...

Page 45: ... 2W CN208 HV CN209 R204 50M 1W D206 SHV 03 C205 220p 6K DE0910 C204 220p 6K DE0910 T201 Q203 2SK1299L C207 0 022u 50V D207 1SS131 R202 330 1W C202 0 068u 50V R205 3 9K 1 W 8 9 PGND D211 1SS131 TL494 1 16 IC202 C703 0 01u R730 43K R728 39K R726 3 9K R724 9 1K R703 47K C704 0 001u R784 1 5K Q708 2SA1576 R785 910 C721 2200P C201 1 0u 50V R720 7 5K C710 0 01u R723 100K PGND PGND C203 22u R725 3 3K R70...

Page 46: ...15 MAIN CONTROL PWB TOP VIEW BOTTOM VIEW 44 ...

Page 47: ... B A CN301 5 DSEG1 CN301 6 DSEG2 CN301 7 DSEG3 CN301 8 DSEG4 CN301 9 DSEG5 D305 ASL D306 LSL R305 51 J R306 51 J D301 POL D302 TEL D303 JAL D304 DSL R301 51 J R302 51 J R303 51 J R304 51 J S301 ESK CN301 2 VB CN301 4 DSEG0 CN301 1 GND CN301 3 KI POL DSL ASL LSL TEL JAL TLG209 TLR209 ...

Page 48: ...2 CN301 4 DSEG4 CN301 5 DSEG6 CN301 9 DSEG5 CN301 10 DSEG3 CN301 11 DSEG1 CN301 1 CSEG0 R308 2K Q301 2SD2114K C D E F G 1 6 B 7 Seg D304 LSL D305 ASL D306 DSL D303 A D308 JAL D309 TEL D307 P O L R312 8 2J Q302 2SD2114K R309 10K R310 2K CN301 6 CSEG1 R311 10K S303 CSW S304 ESSW S302 CQSW S301 PSW 7 Seg POL DSL ASL LSL TEL JAL GL8E03D TLG209 TLR209 CN301 7 KI CN301 8 GND ...

Page 49: ...SERIES 19 COPY LAMP CIRCUIT PWB 2 200V SERIES 20 MES Motor Encorder Sensor CIRCUIT P W B CLO2 CN401 1 CLO1 CN401 2 F401 115 C 100V CLO1 CN401 1 CLO2 CN401 2 F401 133 C 200V 1 3 CN501 1 MSS CN501 2 MRE CN501 3 GND 2 4 PD501 GP1S53V 47 ...

Page 50: ...otor Copy lamp High voltage Grid Paper gate A Paper gate B Paper out SW Table position 300msec 2 3sec 300msec ON with any key Sleep mode Copy end no key input After 90 sec Power switch Power relay H L Copy key 2 1 9sec X 582pulse 200m 2sec 2 3sec x 582pulse 2 63sec On sheet is campleted In the multi copy mode the operation is repeated from 2 0sec 1 6sec 800msec Bias Heater lamp Motor Copy lamp H V...

Page 51: ... D E F G H I A B C D E F G H I 10sec 300msec 2 4sec 1 0sec 1 0sec 200msec 5 0sec 54sec 200msec 1 9sec x 582 pulese 250msec 500msec Paper in sw Z 21 Copy key Z 26 TCS THS Bias DV Bias Motor Copy lamp H V Grid Table position TEL M300A Toner enpty Home position 49 ...

Page 52: ...T3 BK POWER SUPPLY ACL2 ACN2 1 2 CN110 NOUT1 CN108 1 2 3 ACL3 ACN3 BL BL PL PL W H ACN2 ACL2 ACL3 ACN3 POWER TRANS TC SB HIGH 1 1 TC SB CN208 CN211 RD W H CLO1 CLO2 CL 1 1 MC CN207 CN209 CN206 GB RD W H H L MC VOLTAGE GB H L NOUT2 HLL NOUT2 HLL 100V 200V 165C NOUT2 CN106 1 2 3 HLL CN103 BK BK PWB CN102 1 2 1 2 3 RRS THS VH VH BL BL BL BL THS RRS V H RRS V H THS 1 2 1 2 165C M TH 1 2 GND HLTH 1 2 M...

Page 53: ...2 CLO1 CLO2 CN201 CN202 BL BR 100V BK WH 1 2 ACL1 ACN1 3 CN212 BK W H LOUT1 NOUT1 LOUT1 CN104 CN105 1 2 1 2 3 NOUT3 LOUT3 BK POWER SUPPLY ACL2 ACN2 1 2 CN110 NOUT1 CN108 1 2 3 ACL3 ACN3 BL BL PL PL WH ACN2 ACL2 ACL3 ACN3 POWER TRANS TC SB HIGH 1 1 TC SB CN208 CN211 RD W H CLO1 CLO2 200V C L 133C 1 1 MC CN207 CN209 CN206 W H RD GB H L M C VOLTAGE H L G B NOUT2 HLL 165C NOUT2 HLL 100V 200V NOUT2 CN1...

Page 54: ...d in a retrieval system or transmitted In any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher SHARP CORPORATION Printing Reprographic Systems Group Quality Reliability Control Center Yamatokoriyama Nara 639 11 Japan 1997 October Printed in Japan S ...

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