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Fujitsu Impact 3650, Maintenance Manual

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Fujitsu Impact 3650 Maintenance Manual Download Page 149

149 

DRAM 

Voltage 

dividing 

HDLSI 

(MBCG46183-520PF) 

(Flyback control   

output) 

 

(Print head driver) 

 

Pin data output 

PIN1 

 
 
 

PIN2 

 
 
 
 
 

PIN24 

 

Flyback absorption 

circuit 

Power supply

MB90706 

 

5.3.7 Print Head Driver 

 
Figure 5.3.19 is a print head drive circuit block diagram. 

Main board 

+34V 

Print head 

1   2      24 

 
 
 

 +34V 

 

+34V 

 
 
 

FLYBK1-6 

 

Transistor array 

*BKSI      SMA4032 

PDV1 

 

PD1 
*BKSI 

TIMER1 

PDV2  

PD2 

 
 

*BKSI 

 

PDV24 

PD24 

 
 
 
 

SG2 

 

 
 

Figure 5.3.19 Print head drive circuit

 

 

Summary of Contents for Impact 3650

Page 1: ...1 Impact 3650 SERIAL PRINTER MAINTENANCE MANUAL FUJITSU ISOTEC LIMITED FUJITSU ISOTEC LIMITED Proprietary Confidential ...

Page 2: ...JITSU ISOTEC LIMITED No part of this manual may be reproduced in any form without permission PREFACE This manual is for engineers who operate install or maintain the impact 3650 printer and covers Chapter 1 Printer specifications performance and configuration Chapter 2 Unpacking performance check and connection Chapter 3 Troubleshooting Chapter 4 Maintenance Chapter 5 Principles of operation Chapt...

Page 3: ...alization part 001 3 20 3 1 1 Problems at power on initialization part 002 3 21 3 1 1 Problems at power on initialization part 003 3 22 3 1 2 Problems related to printing part 001 2 23 3 1 2 Problems related to printing part 002 2 24 3 1 3 Problems related to printing result 25 3 1 4 Problems related to print quality part 001 2 26 3 1 4 Problems related to print quality part 002 2 27 3 1 5 Problem...

Page 4: ... Installation 53 13 Print Mechanism Unit removal and installation 54 14 Power Supply Unit removal and installation 56 15 ROM Board Main Board replacement 57 16 LAN RELAY PCA LAN cable 17P replacement 58 17 RS232C BOARD replacement 59 18 AC Switch ASY removal and installation 60 19 Inlet ASY replacement 61 20 FAN UNIT 2 replacement 62 21 Control Panel Cable replacement 63 22 F CSF Cable CSF Connect...

Page 5: ...on adjustment 102 6 Vertical Alignment V ALMNT adjustment 103 7 Top of forms adjustment factory use 104 8 Skew detection value adjustment 105 4 9 3 Lubrication 106 1 Upper angle 106 2 HCPP mechanism Stud for gear 107 3 Detent for DV roller 108 4 Bearings 108 5 Guide to slide the paper table 109 6 Carrier unit Ribbon drive mechanism 110 4 10 Diagnostics 111 4 10 1 Printing the Self Test 111 4 10 2 ...

Page 6: ...ller 137 5 3 2 4 The MPU MB89P585 has the following main functions 139 5 3 2 5 LAN interface 140 5 3 3 Head Control LSI MBCG46183 520PF 141 5 3 4 Motor Control LSI MBCG46183 525PFV 142 5 3 5 Control Panel Control 143 5 3 6 Motor Control and Drivers 144 5 3 7 Print Head Driver 149 5 3 8 Alarms 151 5 3 8 1 Fire Check 151 5 3 8 2 ROM or RAM Error 151 5 3 8 3 Spacing Error 151 5 3 8 4 APTC Gap Alarm 1...

Page 7: ...ed Impact 3650 Printer Product Description A1KA02038 B112 E The impact 3650 printer has a reliable simple mechanism requires little maintenance 1 2 Equipment Structure 1 2 1 Overview This section outlines printer structure and features 1 2 2 Model configuration The impact 3650 is a 136 column printer Factory options are as follows Power Supply type 220 240VAC input Interface type Centronics parall...

Page 8: ...idge Tractor unit Cut sheet feeder Front Cover assembly Operating panel Upper Cover assembly Print Head ROM board Power supply Lower cover assembly AC SWITCH assembly AC INLET assembly Components that operator can install and remove Frame Carrier Unit Tof L R sensor Aptc sensor Carrier Cable L RES sensor SP motor LF motor APTC motor Connector Board Inter Lock SW HCPP motor PS Sensors FTRPE Sensors...

Page 9: ...OM Board Control Panel sw inlet Carrier board LF Motor Print Head TR Motor Connector board SP Motor PS sensors HCPP motor HCPP HP SW APTCHP SW APTC motor FTRPE sensor RTRPE sensor FCSF RCSF connector INTER LOCK SW APTC sensor TOFR sensor TOFL sensor Option board LAN Carrier unit Mecha Unit USB Centro FAN Motor 2 LRES sensor FAN Motor 1 FAN driver RS232C ...

Page 10: ...10 1 Exterior components This section gives information on exterior components of the printer covers removable mechanism units etc Figure 1 3 Exterior components of the impact 3650 ...

Page 11: ... Table is necessary to use cut sheets exceeding 297 mm in length d Rear stacker The rear stacker holds printed cut sheets The optional Large Stacker is necessary to use cut sheets exceeding 297 mm in length e Control panel The control panel consists of an LSI ten push button switches one dial thirteen LEDs and a buzzer The switches are used for operations such as loading and feeding paper and cont...

Page 12: ...nting mechanism Figure 1 6 Mechanism of the impact 3650 Print head Ribbon cartridge Stay shaft Carriage Stepping motor for carriage drive mechanism Paper feed mechanism HCPP motor HCPP mechanism APTC mechanism ...

Page 13: ...ontinuous forms are automatically loaded to the print position e Automatic paper thickness control APTC mechanism The APTC mechanism adjusts the gap between the print head and the paper surface Before start printing the print head is approach to the platen until APTC sensor is pressed against the paper surface And then the print head is returned by a certain distance so that the gap actually betwe...

Page 14: ...ivers convert signals from the sensors The drivers supply power to motors print head wires and other components The separate RS 232C serial board or LAN relay board is connected to this board through the cable c Power supply unit The power supply unit supplies DC34V and DC5V by one transformer d AC inlet and AC switch The AC inlet has protective earth cable In order to prevent an electric shock it...

Page 15: ... units are the same and installable at either position c LAN card A LAN card is available as a printer add on option A user installable function the LAN card can be installed only on printer models with the Centronics parallel USB interfaces c Large paper table The large paper table helps to increase operability when large cut sheets are used Also sheets that are output from the front are easier t...

Page 16: ...e and expense 2 2 Notes on Installation For best results note the following points when installing the paper Place the printer on a level vibration free surface Keep the printer away from sunlight and heaters Be sure printer ventilation ports are not blocked Do not operate the printer in a humid or dusty environment Use an outlet that is separated from noise generating equipment such as motors Use...

Page 17: ...ws Figure 2 1 1 Open the carton and remove Rear stacker Ribbon cartridge and Cushion L R 2 Lift up the printer using the grip at right and left of the printer 3 Take out accessories Power cord Manual Figure 2 1 Unpacking the printer and accessories ...

Page 18: ...e 5 Remove the Block FC 6 Open the front cover and remove the cardboard shipping restraint holding the carriage in place Figure 2 3 Removing the shipping materials 7 Store the original shipping carton and packing materials for future use in moving or shipping the printer ...

Page 19: ...ails 3 Check the rated voltage or the printer and AC power outlet then connect the AC power cord between the printer and AC power outlet 5 Close the front cover 6 Turn on the power switch 7 Load cut sheet paper or continuous forms paper as explained in the User s Manual Check printing performance and quality using self test printing detailed in User s Manual ...

Page 20: ...POWER lamp does not go on The power cord is connected properly The cable connected to the control panel board is defective Check the connection Check the cable Turn off the power then wait for about 10 minutes Disconnect the space motor connector and turn on the power Initialization is not done but The POWER lamp comes on An SP motor fire check alarm is detected Replace the SP motor Replace the co...

Page 21: ...ssembly The interface cable is defective Replace the interface cable After the POWER lamp goes on simultaneous blinking of all other lamps is performed but the PAPER OUT lamp does not blink later If the interface cable is disconnected initialization is performed normally The host is defective Check the host The control board is defective Replace and initialize the control board The control panel b...

Page 22: ...poor The carriage cable is defective The driver board is defective The carriage cable is disconnected Clean or replace the carriage PC board Replace the carriage cable Replace the driver board Connect the carriage cable properly After APTC initialization the PAPER OUT lamp flashes The carriage does not move An abnormal sound is made Carriage movement is not smooth Space alarm is detected A The SP ...

Page 23: ...load alarm detected 34V isn t restore after 3pass printing The power supply is defective Replace it The paper to be Printed on is too thick Replace the paper Use paper of a thickness specified in the paper specification Difference thickness of the paper Replace the paper or use manual mode properly Card guide adjustment is incorrect Adjust card guide correctly 2 The PAPER OUT lamp starts blinking ...

Page 24: ... defective Replace and initialize the control board Replace the interface cable Check the host The carriage cable is improperly connected to the print head or control board Connect the carriage cable properly Even self test printing is not performed The control board is defective Replace and initialize the control board Paper out condition is detected Paper pass select isn t correct Paper isn t lo...

Page 25: ...ace cable Check the host The carriage cable is improperly connected to the print head or control board Connect the carriage cable properly Even self test printing is abnormal The control board is defective Replace and initialize the control board Printer ignores data that out of print area Area over detection works 1 The data sent from the host does not match the print results Area over detection ...

Page 26: ...r thickness is adjusted properly The automatic paper thickness control mechanism works normally The control board is defective Replace and initialize the control board The manual paper thickness adjustment dial is set improperly Adjust the manual paper thickness adjustment dial Multipart paper or thick paper is used Automatic paper thickness control is defective Replace and readjust the card guide...

Page 27: ...thickness setting is too narrow the ribbon is loosened The ribbon is loosened on a locally thick portion of paper The ribbon is partly twisted Poor card guide adjustment influenced ribbon movement The ribbon cartridge is defective The ribbon setting is inadequate Adjust the manual paper thickness adjustment dial properly according to paper thickness Check the paper specifications Check whether the...

Page 28: ...is defective The printer is detecting paper The paper detection mechanism is defective Correct the setup Replace TOF 1 or 2 sensor Eject the paper from the printer Replace the printing mechanism unit 4 Front fed continuous forms do not move back The front tractor PE sensor is defective Replace the FTRPE sensor Replace the tractor unit 5 Rear fed continuous forms do not move back The rear tractor P...

Page 29: ...al paper thickness adjustment dial is set improperly The card guide is mounted out of place The print head gap is invalid Paper skews in the CSF Set paper properly Replace paper with that conforming to the media specifications Adjust the manual paper thickness adjustment dial properly Adjust the card guide position Adjust the print head position Replace the CSF ...

Page 30: ...er or smoke emission eliminate the fault cause before turning on the power again 1 Switches on the control panel are disabled The control board is defective The control panel board is defective Replace the control board Replace the control panel board 2 Lamps on the control panel do not go on properly The connection between the control panel board and control board is defective The control board i...

Page 31: ...ssion The printer ignores the data data is lost and a question mark is stored in the input buffer when the error is recovered Check all settings for the RS 232C interface Download error The download buffer overflows The printer ignores the data data is lost Reduce downloaded data Reduce the print buffer capacity i e increase the download buffer capacity Overrun error The printer cannot accept data...

Page 32: ...ator blinks When removing the paper on the paper table is required The REMOVE PAPER indicator blinks In this case operator must remove paper for loading new paper The PS sensor detects this error by reflecting light form the paper or other obstruction It also detected by light that is shining into the photo sensor when the paper table is removed Therefore anyway paper table must be installed corre...

Page 33: ...and the power supply was stopped HCPP alarm Switching between cut sheet paper and continuous forms paper was not possible Overload alarm An overload occurred during printing and tripartite printing was performed However the power source voltage was not restored Low voltage alarm The power source voltage dropped below the specified level when no printing was in progress APTC gap alarm During the AP...

Page 34: ...est operation after error recovery 4 2 Notes on USE Note the following Do not connect or disconnect connectors or printed circuit boards while power is on Use screwdrivers wrenches and other tools suited to the parts being replaced Do not leave screws or parts inside the printer Use only the specified type of oil grease and cleaning solutions Be sure power is turned off before starting to replace ...

Page 35: ...echanical subassemblies and adjustment after replacement 4 5 Preventive Maintenance No periodic maintenance is required However keeping the printer clean lengthens its service life and MTBF 4 6 Part Drawings This section gives basic components and their location Figure 4 1 Part Drawings Print Head Card Guide Carriage SP Timing Belt SP Motor Stay Shaft Upper Angle Print Mechanism Unit Ribbon cartri...

Page 36: ... not to be loosened or removed Parts not to be Disassembled No Components Parts Remark 1 Frames L and R All screws 2 Space motor All screws and pulleys 3 Print head 4 Upper Angle 3 screws 5 Card Guide 2 screws Gage for Adjustment is necessary Figure 4 2 Parts That must not be disassembled Print head Space motor pulley Upper stay screws Rear stay screws Front stay screws Upper Angle Card Guide ...

Page 37: ...leaning procedure Remarks Paper path Remove paper particles and dirt Top of print head Remove ribbon debris paper scraps and other contaminants Card guide Remove ribbon debris paper scraps and other contaminants Platen surface Clean the surface with soft cloth 1 Stay shaft Remove dust from the surface of the shaft and clean it with soft cloth Refer to the lubrication specifications 1 If paper beco...

Page 38: ...king area clean Turn off power to equipment and unplug it before disassembled Follow procedures carefully Do not disassemble the parts that are not to be disassembled Store disassembled parts in a clean place where they will not get lost Check parts for number and shape after replacement and adjust them if necessary Reassemble the printer following the steps in reverse order of disassembly Confirm...

Page 39: ...tor unit Figure 4 4 Front feed tractor Removal Installation 1 Engage the U grooves on the left and right sides of the tractor unit with the counterpart pins on the printer fit the ditch of left pin there is any ditch of the right pin 2 Press down the front shaft of the tractor unit to lock the unit 3 Make sure that left and right mounting pins 2 have been hooked by lock levers Figure 4 5 Front fee...

Page 40: ...or unit Figure 4 6 Rear feed tractor removal Installation 1 Engage the U grooves on the left and right sides of the tractor unit with the counterpart pins on the printer fit the ditch of left pin there is any ditch of the right pin 2 Press down the front shaft of the tractor unit to lock the unit Figure 4 7 Rear feed tractor Installation ...

Page 41: ... power 3 Raise the paper table then engage the U grooves on both ends of the cut sheet feeder with the mounting pins on the printer and lower the cut sheet feeder carefully Push in the cut sheet feeder while aligning label A on the feeder with label A on the right side of the printer 4 Connect the cut sheet feeder cable connector to the connector on the front right of the printer 5 Insert the conn...

Page 42: ...ng pins on the printer and lower the cut sheet feeder carefully Push in the cut sheet feeder while aligning label A on the feeder with label A on the right side of the printer 3 Lower the cut sheet feeder like turning it using the mounting pins as fulcrums 4 Connect the cut sheet feeder cable connector to the connector on the rear left of the printer 5 Insert the connector with the arrow side faci...

Page 43: ...rame outward to disengage the stacker plate projections from the frame Installation 1 Install the stacker plate by reversing the removal procedure Figure 4 10 Stacker Plate removal and installation Stacker frame Stacker 1 1 Actually there are two kinds of stacker as follows Standard stacker small size Large Stacker large size option Stacker in Figure is Large Stacker ...

Page 44: ...he lock levers on the left and right sides of the stacker unit pull out the stacker unit to the back of the printer Installation 1 Install the stacker unit by reversing the removal procedure Figure 4 11 Stacker Frame removal and installation Stacker unit Lock lever Lock lever ...

Page 45: ...m the grooves on the cover Figure 4 12 Paper Table removal Installation 1 Insert the left and right protrusions on the paper table ends into the grooves on the cover as shown in the following figure 2 Set the paper table in the normal position Paper table in the following figure is the Large paper table Both standard paper table and large paper table can be opened or closed in the same way Figure ...

Page 46: ... LAN card Figure 4 14 LAN card removal Installation 1 Install the LAN card by reversing the removal procedure Note Take care to insert the card into the guide rail correctly Setup of a LAN card is necessary See the online manual in the CD of LAN card Figure 4 15 LAN card Installation ...

Page 47: ...emoval 1 Remove the paper table and stacker unit 2 Remove the flap Installation 1 Install the flap by reversing the removal procedure Figure 4 16 Flap removal and Installation Flap Flap Paper table Stacker frame Stacker plate ...

Page 48: ... both side of the cartridge and carefully lift the cartridge out of the printer Figure 4 17 Replacing the Ribbon cartridge Installation 1 Remove the new ribbon cartridge from its package Push in the sides of the two ribbon release tabs The tabs will snap into the cartridge and the ribbon feed mechanism will engage 2 Turn the ribbon feed knob clockwise to be sure that it feeds properly Figure 4 18 ...

Page 49: ...n release levers Insert the ribbon so that the ribbon falls between the nose of the print head and the plastic print guide Figure 4 19 Installing the Ribbon cartridge 4 Turn the ribbon feed knob clockwise to tighten the ribbon 5 Close the front cover of the printer Note The buzzer may sound if the print head is moved while the power supply is ON ...

Page 50: ...the left end of the head lock wire forward to release it from the hook at the left of the print head carriage 4 Then release the wire from the center hook 5 Release the wire under the head on the left side Figure 4 20 Print head removal 6 Remove the print head from the connector on the carriage as shown in the figure below Figure 4 21 Removing the Print head from connector Installation 1 Install t...

Page 51: ... 2 Unhook the control panel case at three positions then pull out the control panel unit to the front 3 Disconnect cable from the control panel board Installation 1 Install the control panel unit by reversing the removal procedure Figure 4 22 Removing the Control panel Three hooks ...

Page 52: ...allation Removal 1 Open the front cover 2 Pull The hinge of the Front Cover slantwise then remove the front cover Installation 1 Install the front cover by reversing the removal procedure Figure 4 23 Removing the Front cover Front cover ...

Page 53: ...r then lift off the upper cover 5 Remove the paper table Installation 1 Install the paper table 2 When installing the upper cover pass the control panel cable and cover open switch cable through the openings on the upper cover and control panel holder 3 Hereafter follow the removal procedure in reverse order Unhooking on the left Unhooking on the right Figure 4 24 Removing the Upper cover Screw Up...

Page 54: ...plug the connector So be carefully 5 Move the mechanism unit about 2cm to the right when looking form back of the printer and then put the rubber foots of the front of mechanism unit above the mounting projection of lower cover 2 6 Keep the left hand holding side plate and then move the right hand to the rear of the mechanism unit 3 7 Lift up the rear of the mechanism unit 4 and then place the til...

Page 55: ... and installation Installation 1 Install the mechanism assembly by reversing the removal procedure Note The following adjustments are required after installation Bi directional printing positions Auto loading positions Skew detection Relay cable LF Motor cable TR Motor cable R CSF Carrier cable 3 FFC Cables SP motor cables Although not drawn a picture there is also the following cables in fact SP ...

Page 56: ...the AC switch assembly connector reactor connector and power supply unit connector then remove the power supply unit Installation 1 Install the power supply unit by reversing the removal procedure 2 Counter reset should be done after Power Supply Unit replacement Figure 4 27 Power Supply Unit removal and installation Power supply unit connector Power supply unit Screws AC switch assembly ...

Page 57: ...nstallation 1 Replace the NVRAM memory chip to put adjustment and set up information from old board into the new board 2 Install the ROM board by reversing the removal procedure Mount the memory chip on the IC socket with the dent facing the printer cable connector To reset the NVRAM see the procedure as follows Note Resetting NVRAM requires adjustment and setting up If you don t know set up value...

Page 58: ...the two LAN cables Remove the bracket 2 screws 4 Remove the screws securing the LAN RELAY PCA 5 Remove the LAN cable 17P Installation 1 Install the LAN RELAY PCA LAN cable 17P by reversing the removal procedure Figure 4 29 LAN RELAY PCA LAN CABLE 17P removal and installation Two LAN cables 17P Screw LAN RELAY PCA Screws Bracket ...

Page 59: ...e the printer mechanism assembly 3 Remove the two exclusive screws and RS232C BOARD Installation 1 Install the RS232C BOARD and two exclusive screws by reversing the removal procedure Figure 4 30 RS232C Board removal and installation RS232C BOARD With two exclusive screws ...

Page 60: ...r 2 Remove the printer mechanism assembly 3 Remove the AC switch assembly from the lower cover Installation 1 Install the AC switch assembly by reversing the removal procedure Figure 4 31 AC Switch ASY removal and installation AC switch assembly Red upper side White lower side ...

Page 61: ...e two screws securing the inlet and one screw securing the frame ground wire and 4 remove the inlet assembly Installation 1 Install the inlet assembly by reversing the removal procedure 2 Regarding the connecting cables refer to the front page Figure 4 32 Inlet ASY removal and installation Inlet ASY Screws Screw ...

Page 62: ...ve the printer mechanism assembly 3 Remove the FAN UNIT 2 cable from ROM BOARD 4 Remove the two screws securing the FAN UNIT 2 Installation 1 Install the FAN UNIT 2 by reversing the removal procedure Figure 4 33 FAN UNIT 2 replacement FAN UNIT 2 CABLE FAN UNIT 2 Screws ...

Page 63: ...ove the FAN UNIT 2 4 Remove the 4 operator cable covers and then disconnect the operator cable from the ROM board Installation 1 Install the control panel cable by reversing the removal procedure Figure 4 34 Control Panel Cable replacement Figure 4 35 bending size of control panel cable ROM board Control Panel cable ...

Page 64: ...onnect the cable from the front CSF PCA connector 5 Remove the two screws securing the front CSF PCA to remove the PCA Installation 1 Install the front CSF PCA by reversing the removal procedure Figure 4 36 bending size of control panel cable Bending the front CSF cable KA02027 Y192 Figure 4 37 bending size of Front csf cable Front CSF PCA Screw Cable ...

Page 65: ...ssembly 3 Remove the screw securing the rear CSF PCA and remove the PCA Installation 1 Install the rear CSF PCA by reversing the removal procedure Figure 4 38 R CSF Cable CSF Connector replacement Bending the rear CSF cable KA02022 Y191 Figure 4 39 bending size of Rear csf cable Screw CSF CONNECTOR R CSF CABLE ...

Page 66: ... the upper cover 2 Remove the printer mechanism assembly 3 Disconnect the relay cable from the sensor PCA connector Installation 1 Install the relay cable by reversing the removal procedure Figure 4 40 Relay cable replacement Relay cable Sensor PCA ...

Page 67: ... 3 Disconnect the mechanism cable and flat cable from the sensor PCA connectors 4 Separate and remove the sensor PCA from the two saddles by using long nosed pliers Installation 1 Install the sensor PCA by reversing the removal procedure Figure 4 41 Sensor PCA replacement Sensor PCA Saddles Flat cable ...

Page 68: ...may be removed 4 Remove the screws securing SP motor 5 Remove the SP motor while loosen the tension pulley by driver Installation 1 Install the SP motor assembly by reversing the removal procedure Note After installation the following adjustment is required Bi directional printing position Figure 4 42 Sp motor removal and installation Screw for FAN unit 1 FAN unit 1 Screws for SP MOTOR Tension Pul...

Page 69: ... 4 Remove the screws fixing lf motor 5 Remove the LF motor from inside of side frame Installation 1 Install the LF motor by reversing the removal procedure Figure 4 43 LF motor removal and installation Screws Idle Gear LF Motor Note LF bracket needs adjustment Putting the mark before disassembly is gives aim to adjustment for assembly ...

Page 70: ...anism assembly 3 Remove the shift gear and shift spring 4 Remove the two screws securing the TR motor 5 Remove the TR motor from the side frame Installation 1 Install the TR motor by reversing the removal procedure Figure 4 44 TR motor removal and installation Screws Shift spring TR motor Shift gear ...

Page 71: ...Remove the two screws and APTC bracket Installation 1 Install the APTC unit by reversing the removal procedure Figure 4 45 APTC Unit removal and installation Screws APTC bracket APTC bracket APTC motor Screw APTC motor backside Push against the bracket to the stud in the direction of right and lower side ...

Page 72: ...CPP gear 4 Remove the two screws securing the HCPP motor 5 Disconnect cable from the sensor PCA connector then remove the HCPP motor from the side frame Installation 1 Install the HCPP motor assembly by reversing the removal procedure Figure 4 46 HCPP Motor removal and installation HCPP Motor Screws Ｅ ring HCPP Gear ...

Page 73: ...the upper cover 2 Remove the printer mechanism assembly 3 Remove the screw securing the bracket then remove fan unit Installation 1 Install the fan unit by reversing the removal procedure Figure 4 47 SP fan removal and installation Screws FAN UNIT 1 ...

Page 74: ...per cover 2 Remove the printer mechanism assembly 3 Remove the SW holder and INLK SW ASY Installation 1 Install the INLK SW ASY by reversing the removal procedure Figure 4 48 INLK SW ASY removal and installation INLK SW ASY SW holder INLK SW ASY SW holder ...

Page 75: ...2 Release the PS PCA from the three hooks on the PS holder 3 Disconnect the cable from the connector and remove the PS PCA Installation 1 Install the reactor by reversing the removal procedure Figure 4 49 PS PCA removal and installation PS PCA PS holder Cable ...

Page 76: ...oot from side frame L then unhook the holder at two locations 4 Disconnect the cable from the sensor PCA connector and remove the HCPP switch assemble Installation 1 Install the HCPP switch assembly by reversing the removal procedure Figure 4 50 HCPP switch ASY removal and installation Side frame L Holder HCPP SW ASY Rubber foot ...

Page 77: ... 3 Unhook the sensor cover TR and remove the sensor cover TR 4 Unhook the TRPES ASY and remove the TRPES ASY 5 Disconnect the TRPES ASY connector Installation 1 Install the TRPES assembly and sensor cover TR by reversing the removal procedure Figure 4 51 Sensor cover TR TR PES ASY replacement sensor cover TR TRPES ASY ...

Page 78: ...tall the ribbon rope If necessary remove the ribbon bracket to lead the ribbon rope under the ribbon pulley To remove the ribbon bracket release the craws of the ribbon bracket hooking the carriage 2 Check the direction of turning 3 Hook two springs left and right side of ribbon rope Figure 4 52 Ribbon Rope ASY replacement Direction of turning Ribbon pulley Ribbon Rope ASY ...

Page 79: ...ile turning it Installation 1 Install the card guide assembly by reversing the removal procedure 2 Improper cable forming may cause the breaking of wire See next page to form the wire appropriately 3 After installation the following adjustments are required Card guide attaching position TOF sensor output Auto loading position Printing positions at paper end Left printing start position Skew detect...

Page 80: ...r breaking wire may cause because of cables get into touch with upper guide F 2 Lead TOF L and APTC cables inside a rib behind the mark 3 Insert the extra length of TOFL cable into the place of A 4 Insert the extra length of TOFR cable into place of B Figure 4 54 Card Guide cable forming Guide part of the carrier frame Upper guide Ｒ mark Place A for extra length Place B for extra length ...

Page 81: ... from the carriage PC board 5 Remove the small screws by precision driver and remove the TOFL R sensor Installation 1 Install the TOFL R sensor assembly by reversing the removal procedure 2 After installation the following adjustments are required TOF sensor s voltage adjustment Top of forms adjustment factory use Skew detection value adjustment Figure 4 55 TOFL R sensor ASY replacement TOFL senso...

Page 82: ...y reversing the removal procedure 2 When insert the stay shaft take care of the oil felt inside the carrier hole Refer to lubrication inspection The following adjustments are required Print head gap adjustment for upper angle You may omit when having not loosened the screw Card guide position adjustment TOF sensor s voltage adjustment Vertical Alignment V ALMNT adjustment Top of forms adjustment f...

Page 83: ...Install by reverse order 2 The following adjustments are required Print head gap adjustment for upper angle Card guide position adjustment TOF sensor s voltage adjustment Vertical Alignment V ALMNT adjustment Top of forms adjustment factory use Skew detection value adjustment Figure 4 57 SP Timing Belt replacement Difference of teeth position shall be less than 1 teeth Belt Clamp Belt Belt Clamp ...

Page 84: ...on pulley 6 Remove the tension spring 1 Please hold firmly the hook part on the left side of a tension spring above on long nose pliers 2 Attach thumb of left hand to a frame and attach index finger to a pliers And pull the pliers left by gripping force of left hand so that spring hook removed form tension bracket 3 Remove a tension bracket from a frame portion Figure 4 58 Removing SP Tension spri...

Page 85: ...ve a crack to a shaft It is desirable to work carrying a paper on a stay shaft and protecting 2 Attach thumb of left hand to a frame and attach index finger to a pliers And pull the pliers left by gripping force of left hand so that spring hook is installed hook part of upper stay Install subsequent process by reverse order The following adjustments are required Vertical Alignment V ALMNT adjustme...

Page 86: ...ket and remove the LF belt Installation 1 Install the LF timing belt by reversing the removal procedure 2 Install the LF tension bracket while aligning it with the marking and secure it with a screw Note After installation is finished the following adjustment is required LF belt tension Figure 4 60 Replacing the LF timing belt Lf tension bracket screw LF belt Put the mark before disassembly ...

Page 87: ...LF tension pulley ASY put the mark to memory its adjusted position 4 Remove the LF tension pulley ASY and LF belt and Pulley gear 5 Remove the Platen gear Flanges DV gears 6 Remove the slide cam Figure 4 61 Removing the Platen roll Flange DV roller gear Platen gear E ring LF tension pulley ASY Slide cam Pulley gear LF belt ...

Page 88: ...ngs and slide in the direction of allow then remove it Note Take care of jamming cables together when install platen cover Figure 4 62 Removing the Platen roll Installation 1 Assembly by reverse order the removal Note Lubrication is necessary to right and left shaft of Platen roll Refer to lubrication tables Platen roll Screws for lower plate ...

Page 89: ...ver 2 Unhook four nip springs 1 two on each end and four nip springs 2 two on each end and remove the springs Installation 1 Install nip springs 1 and 2 by reversing the removal procedure Figure 4 63 Nip Spring 1 2 replacement NIP spring2 black NIP spring1 silver ...

Page 90: ...Remove the E ring of both side and Nip gear on the left side 4 Remove the flanges slide cam OC cam and bearings 5 Lift and slide the Nip roller to the right And remove it from its left end Figure 4 64 Nip Roller replacement Installation 1 Assembly by reveres order Lubrication is necessary refer to lubrication table E rings Nip gears OC Cams Slide CAM Flanges Bearings ...

Page 91: ...ing from the left of the mechanism assembly 5 Remove the slide cam and OC cam from the left side of the mechanism assembly 6 Remove the bearings from the left side of the mechanism assembly Figure 4 66 Removing DV Roller 7 Remove 3 e rings 2 flanges and slide cam at right side of printer mechanism 8 Remove the OC cam and bearing at right side of printer mechanism 9 Remove 4 screws fixing lower gui...

Page 92: ...92 10 Remove 8 screws fixing lower guide at base side and front and rear side Figure 4 66 Removing Lower Guide 11 Shift the lower guide a little upward Screws Screws ...

Page 93: ...DV Roller 14 Replace assembled parts on the DV roller Installation 1 Assembly by reverse order the removal Note Lubrication is necessary to right and left shaft of Platen roll Refer to lubrication tables NOTE after installation the following adjustment are required 1 LF belt tension Note Lubrication is necessary to right and left shaft of Platen roll Refer to lubrication tables Screws for lower pl...

Page 94: ...ach the head gap adjustment jig on the carriage 2 If necessary open the upper guide F open 3 Move the card guide upper side Figure 4 68 Attach the print head gap jig 4 Rotate the SS gear located at the left side of the stay shaft clockwise this direction makes the head gap narrow until its stopper touches the stopper studs of the side frame Figure 4 69 Rotate SS gear SS gear Stopper of SS gear Sto...

Page 95: ...e screw c 9 Center the carriage unit and move the upper angle back and forth so that the head gap may have value A then fasten the screw b 10 Slide the carriage unit to the left center and right and the check the value A at each position 11 If the head gap doesn t have value A loosen the screw at that position and move the upper angle back and forth again so that the head gap may have value A and ...

Page 96: ... 3 Place the carriage to the ribbon replace position Figure 4 71 Attach the head gap adjustment jig 3 Enter adjustment mode Turn the power on while pushing SW and SW of operation panel Then printer enters the adjustment mode Any motors don t move in this mode 4 Loosen the card guide mounting screws slightly to an extent where the card guide doesn t drop towards the platen 5 Place one sheet of 1p 5...

Page 97: ...to conducting state at the head gap is value A The value A should be checked during the SS gear is rotating in the direction of clockwise 8 Slope of card guide should be as follows Figure 4 74 Adjustment and check inclination of card guide A 0 25mm 0 01mm Stopper of SS gear SS gear Stopper stud About 15 mm Gap confirmation area Platen APTC SW 1P 55kg t 0 08 ...

Page 98: ...ated Turn the printer off immediately after printing is started Check the value B by head gap adjustment jig If the Value B is as follows adjustment is finished Figure 4 75 Check the gap after APTC operate B 0 29mm 0 03mm Paper Platen Dial gage Head gap adjustment jig Platen Paper ...

Page 99: ...1 on the tooth of the gear s and put the mark bracket at same position 5 Put the MARK 2 as the aim for adjustment Rotate the motor pinion clockwise to rotate drive gear by 10 teeth Then put the MARK 2 to the tooth which becomes ten pieces from the MARK 1 And then rotate the motor pinion clockwise to rotate drive gear by 2 teeth 6 Insert the 8 parts of paper into the right of card guide and platen ...

Page 100: ... the buzzer sound Once turn clockwise until buzzer is stop and then turn the motor pinion gear counterclockwise until buzzer sounds On an ideal target MARK 2 agree the mark on the bracket 2 tooth is a permission level When the buzzer start souding MARK 2 is on the righte of the mark on the bracket upper the card guide When the buzzer start souding MARK 2 is on the left of the mark on the bracket l...

Page 101: ...while pushing SW and SW of operation panel Then printer enters the adjustment mode Any motors don t move in this mode 3 Adjust the volume resistance shown below so that states on the table is satisfied Figure 4 78 adjusting TOFL R output level Name of sensor Name of LED Remark TOFL HI IMPACT TOFR ONLINE When paper is out of the printer LED should light steadily 4 Adjustment has finished Then turn ...

Page 102: ...n adjustment 1 Adjust the tension using tension bracket position so that reaction force is value A when LF belt is lowered 2mm Value A 250gf 20gf 2 45N 0 2N Figure 4 79 adjusting LF belt tension LF belt Screw Tension bracket ...

Page 103: ...ing and release the SW after carriage turning If the carriage turns two times while pushing SW adjustment value is added two steps Check all lines left center right and correct adjustment if necessary 4 Change the printing mode and adjust individually All printing mode is as follows For change the printing speed press TEAR OFF button To enter Hi impact mode press Hi impact button Speed mode LQ CQ ...

Page 104: ...OAD SW to load the paper Paper thickness should be 1P 55kg about 0 08mm Paper width should be wider than A4 size 210mm 4 Print the marks at the load position Push the TEAR OFF SW to print marks 5 Unload the paper to measure the value of top margin Push the LOAD SW to unload the paper Then measure the top margin And calculate the adjust values Figure 4 81 adjusting top of form position 6 Load the p...

Page 105: ...position Press the PAPER PASS SW to select the paper pass 3 Perform the sequence of adjustment 1 Advance the paper until TOFL sensor detects the paper top end 2 Move the carriage so that TOFR sensor detects the paper top end at the same position 3 Advance the paper until TOFR sensor detects the paper top end 4 Write the distance between the TOFL and TOFR to the NVRAM 5 Eject the paper And perform ...

Page 106: ... number for the location to be lubricated 2 Type A Alvania EP grease 2 FL Floil KF Silicone KF96SP manufactured by Shinetsu SG Silicone grease 3 Amount C Thin uniform film D 1 drop F Fill the case or oil wick S Several drops 4 Cycle O At overhaul 1 Upper angle No Oil Amount Lubrication cycle Location Remarks 1 SG C O Front and rear surface of the upper angle Area of phantom line Figure 4 82 upper ...

Page 107: ...ion Remarks 1 SG C O Hole of slide cam 2 SG C O Cam surface 3 SG C O OC lever L sliding section 4 SG C O Axis of OC lever L R 5 SG C O Studs for shift gears 2 points stud 6 SG C O Studs for LF gears Figure 4 83 HCPP mechanism lubrication 3 SG C O 4 SG C O 5 SG C O 6 SG C O ...

Page 108: ...ocation Remarks 1 SG C O Bearings of stay shaft Same as side frame R 2 SG C O Bearings Nip and DV roller shaft Same as side frame R 3 SG C O Bearings platen roller shaft Same as side frame R 4 SG C O Side of bearing Gear is sliding on the surface Figure 4 85 Bearing lubrication 1 SG C O 2 SG C O DV roller left side NIP roller left side Detent Mechanism to keep the accurate rotation ...

Page 109: ...e to slide the paper table No Oil Amount Lubrication cycle Location Remarks 1 KF C O Guide rails of paper table 2 SG C O Studs for gears Figure 4 86 paper table slide guide lubrication 1 KF C O 1 KF C O 2 SG C O ...

Page 110: ... Ribbon drive lubrication 1 FL F O 2 SG C O 3 SG C O 3 SG C O 3 SG C O 3 SG C O 4 SG C O 5 SG C O 4 SG C O 6 SG C O Note Don t apply grease too much to the teeth If excessive grease disperses the slide of a pulley and a rope will occur and It will be breaking down early Note Don t apply grease to the pulley It causes the slide of a pulley and a rope and mechanism will be breaking down early Note D...

Page 111: ...on press the TEAR OFF or LOAD button instead of the ONLINE button to print the menu The following FUNCTION menu is printed The following FUNCTION menu is printed 2 Select the SELF TST function Repeatedly press the TEAR OFF or LOAD button to position the cursor on the left edge of the aluminum print guide on SELF TST and then press the button or the button The printer selects SELF TST and starts pr...

Page 112: ...112 ...

Page 113: ...rinting and check that the following FUNCTION menu is printed 2 Select the HEX DUMP function Repeatedly press the TEAR OFF or LOAD button to position the cursor on the left edge of the aluminum print guide on HEX DUMP then press the button or the button to select the HEX DUMP function The printer goes online and prints a header and a short help menu 3 Print the hex dump To start hex dump printing ...

Page 114: ...is chapter To return to online normal mode press the ONLINE button If you press the ONLINE button while the hex dump is printing The printer immediately switches to normal online mode Any data that was sent to the printer but not printed is discarded cleared You can also enter hex dump mode by turning off the printer and then turning the printer back on while simultaneously pressing the ONLINE but...

Page 115: ...9 Left start position adjustment mode 9 9 Skew detect adjustment mode 9 Self Test Print Mode 9 9 No Print Mode 9 Vertical Alignment Mode 9 9 Enter HEX Dump Mode 9 Demonstration Print Mode 9 9 Enter Offline Setup Mode 9 List Setup Parameters 9 9 9 9 Flash ROM Update Mode 9 Online Setup Mode 9 9 EEPROM DATA Print Mode 9 9 9 Error Log Clear 9 9 9 All EEPROM Reset Note 1 a 9 9 9 EEPROM All Settings Re...

Page 116: ...LES OF OPERATION 5 1 Overview This section explains the principles of the impact 3650 operation A microprocessor controls the following basic functions Carriage drive Print head drive Paper feed Figure 5 1 Function sequence ...

Page 117: ...ving force which attracts the armature and accordingly moves the wire in the direction indicate by an arrow The wire is guided by the ceramic wire guide and other four plastic guides When attracted by the magnet the armature pushes the wire against the ribbon to print a dot When coil excitation is interrupted the armature returns to the stopper again by the elasticity of the coil spring Positions ...

Page 118: ...he space motor and the timing belt is put on the drive pulley The carriage with the print head is guided by the stay shaft parallel to the platen and the upper angle secured to the frame so that the carriage can move parallel to the platen The timing belt is connected to the carriage by the belt clamper and the carriage moves in parallel to the platen to the left and right in accordance with the s...

Page 119: ...on the upper stay The shield plates are different in length in the direction in which the carriage moves The LRES uses a photo interloper packaged device include LED and photo transistor and detects the presence of the shield plate i e the interrupted state and the transparent state Figure 5 4 LRES detection LRES sensor When LES detect LRES sensor When RES detect Left shield plate Right shield pla...

Page 120: ...riven when the carriage is moved in direction A or B left or right It is then transmitted to the ribbon feed shaft via planet gear and idle gear Figure 5 5 Ribbon feed mechanism Operation when the carriage moves in direction A Ribbon pulley rotation planet gear ribbon feed shaft Operation when the carriage moves in direction B Ribbon pulley rotation planet gear idle gear ribbon feed shaft Figure 5...

Page 121: ...nt head is moved up and down by the angle of the stay shaft Figure 5 7 APTC approach and escape mechanism The paper surface detection switch on the left side of the card guide The ceramic chip is pressed by the paper surface during print head approaches And then panel keyboard SW is pressed by lever The spring is mounted in order to acquire the proper load to detect the paper surface Figure 5 8 AP...

Page 122: ...sors TOFL and TOFR If a detection difference between the two sensors when the top end of paper passes them is too large paper is ejected to the front Skew detection is valid only when a cut sheet is fed manually It is invalid when a cut sheet is fed from the CSF front or rear or continuous forms are fed Figure 5 9 APTC sensor structure TOFL TOFR Card guide ASY ...

Page 123: ...TOR 4 What LF motor drives ROLLERS ROLLERS ROLLERS Note In each tractor mode both of nip rollers are closed when loading and ejecting the paper Opening and closing the Nip Roller HCPP motor moves OC lever L and R through the gear And OC lever L and R move the OC slide cams And OC slide cams moved the OC calms and OC came lift up the Nip roller When OC slide cam move to the front side then front Ni...

Page 124: ...Timing belt Idle gear LF Motor 2 step gear Shift spring TR Motor Shift gearＦ PL idle gear DV gear front and rear OC Lever Gear which drives front tractor Shift gear R Idle gear HCPP Motor OC lever R OC lever L OC slide cam OC cam The rib which shift the shift gear F The rib which shift the shift gear R Stud for shift gear R Stud for shift gear F ...

Page 125: ...the first and second transport roller gears pulleys via the pulley gear and timing belt Driving the front tractor The front tractor is driven by the TR motor which transmits power to the tractor driving gear via shaft gear F Driving the rear tractor The rear tractor is driven by the TR motor which transmits power to the tractor driving gear via shaft gear R idle gear 2 step gear and TR idle gear F...

Page 126: ... first and second rollers driven by the LF motor Paper fed by the rear paper feed tractor is also fed in the same way as with the front paper feed tractor and is pulled by the second and first rollers driven by the LF motor Figure 5 14 Tractor feed mechanism Entrance of rear paper pass DV Roller PL roller RTRPE sensor Paper detect Front fed tractor TOFL R sensor photo reflector on the card guide N...

Page 127: ...e figure below against the first roller in the cut sheet feeding slot is fed between the first transport roller and first nip roller which are driven by the LF motor and pulled by the second transport roller and second nip roller Figure 5 15 Cut sheet feed mechanism DV Roller Platen Entrance of paper pass Nip roller Nip roller PSS sensor DV Roller Front eject Load Eject ...

Page 128: ...paper present state to the no paper state or If 2 pages have unloaded then stop Continuous forms ejection operation Holding the pressing the LF FF button on the control panel while paper is loaded sends the continuous forms forward If 1 page has fed then stop Cut sheet loading operation automatic cut sheet setting operation Operator push against the cut sheet to the feed roller loading operation b...

Page 129: ...circuit Control panel board GAO99BA CA21264 B91X Serial parallel converter LSI display lamps control switches Power supply board PW37BZ 200V KA02951 0086 34 V and 5 V power supply X PC board EC level Table 5 3 1 Printed circuit boards Figure 5 3 1 shows the basic configuration of this printer PWSTOP PWS Figure 5 3 1 Basic configuration Note EEPROM part symbol IC30 mounted on the main board contain...

Page 130: ... motor ８ Tractor motor cable CNTLF Tractor motor ９ Sheet feeder cable Front CNFCSF Rear CNRCSF Sheet feeder connector board 10 Sensor board connection cable CNSEN Mechanism board sensor board 11 USB connector CNUSB Host computer 12 RS232C connector CNRS Host computer 13 Inter rock connector INLK Inter rock switch Power supply board PW37BZ This printed circuit board supplies logic power 5 V and dri...

Page 131: ...ctor board Front sheet feeder CNOP Control panel GAO99BA CNSEN See the following page for the sensor board CNPW Power supply board PW37BZ 200V AC 200 V CNMLF Ｍ Line feed motor CNTLF Ｍ Tractor motor CNHD1 CNHD2 Print head Temperature sensor CNLAN1 CNLAN2 RELAY BOARD CNRS IFCEN LAN BOARD USB RS232C BOARD Centronics Interface USB Interface LAN Interface RS232C Interface CNSP Ｍ Space motor INLK CNFAN ...

Page 132: ...sensor M PS1 PS4 RPM HCPPM APTCM Sensor board Paper setting sensor M M HCPPPS Transport roller position sensor APTCHP APTC reference position sensor RTRPES Rear fed continuous forms sensor FTRPES Front fed continuous forms sensor RPS Skew correction roller phase position sensor CNSEN Main board GMC06 APTC motor Skew correction motor Front rear tractor selection gear open close motor ...

Page 133: ...tronics driver receiver ROM RAM MB90706 Printer controller MBCG461 83 520PF Head control LSI MBCG461 83 525PFV Motor control LSI Motor driver Head driver Power supply unit Control panel Display panel Operation switches Sensor board Carriage board Head Motor EEPROM USB 8bit Controller USB LAN Board Option RS Board Option ...

Page 134: ...ng Enhanced interrupt function eight priority levels Automatic data transfer function independent of the CPU Device using 160 pin flat package CMOS technology FFMC 16 core UART I O extension serial Chip select Address decoder DRAM control Centronics control I O port External interrupt Control Noise resistant external interrupt 16 bit timer Stepping motor control 3ch 8 8 data converter 8 bit A D co...

Page 135: ...g and writing and refresh DRAM Chip select address decoder The chip select address decoder decodes addresses and outputs a chip enable signal to ROM The memory circuit consists of four types of elements DRAM PROGRAM ROM and EEPROM as shown in Figure 5 3 7 DRAM The MB90706 has a 256K x 16 bits DRAM for control program work areas line buffers and external character storage areas External bus DRAM co...

Page 136: ...arious types of emulation A 2 megabyte memory space is defined for each ROM A 16 megabit mask ROM is used for the character generator Address Capacity Explanation 000000 to 0000BF 192 bytes CPU internal I O area 0000C0 to 0000FF 64 bytes External I O area for head and motor LSI 000100 to 00037F 640 bytes CPU internal RAM area 000380 to 5FFFFF 5 9M bytes Reserved 600000 to 7FFFFF 2M bytes Program R...

Page 137: ...terrupt signals after noise is removed from them by sampling in the anti noise interrupt control circuit This printer supports nibble mode conforming to IEEE Std 1284 1994 The following shows the circuits used for two way Centronics control 1 Negotiation mode interrupt signal generator MB90706 SLCTIN NEGO 1284 Active AFXT Host Busy LS14 LS14 LS14 LS08 IRQ 36Pin 14Pin Centronics Driver receiver Hos...

Page 138: ...it to inform the MPU of the receipt of data The MPU checks that external data has been input reads the data and then stores it in DRAM After the interrupt is released from the MPU BUSY is reset and ACK is sent DATA1 8 DSTB BUSY ACK Data reading Interrupt to MPU Figure 5 3 9 Interface timing chart Anti noise external interrupt circuit The anti noise external interrupt circuit reads the results of s...

Page 139: ...ock diagram 3 USB interface USB interface signal Signal name Function 1 VBUS Power 2 D Data transfer 3 D Data transfer 4 GND GND Shell Shield Specification Basic specification USB interface conform Electric power control Self power device LSI3 MB89P585 HOST D D VBUS UNEGO URESET USBRQ UDATA1 4 UPRTRQ RQSTATU ...

Page 140: ...AN interface LAN interface signal Signal name Dir Function 1 TXO output Data transfer 2 TXO output Data transfer 3 RXI input Data transfer 4 5 6 RXI input Data transfer 7 8 Specifications A transfer mode 10 100BASE ...

Page 141: ... diagram A1 A5 PD1 PD24 HDTIM D00 D15 FLYBK1 FLYBK6 PS4 PS3 PS2 PS1 RPS BKSION PWSTOP HALM0 3 SPALMS SPALML SG1 LFALMS DVALM Figure 5 3 11 Head control LSI block diagram Address decoder Print head controller General purpose input port General purpose output port Alarm detection circuit ...

Page 142: ...TRPESC RCSFC FCSFC HCPPMC APTCMC RPMC TOFRSC RPJSC FPJSC FANALM GAP APTCHPS COS APTCM0 3 HCPPM0 3 RPM0 3 FCSFM0 3 D00 D15 RCSFM0 3 MLFM02 MLFM13 MLFM0 3 TLFM02 TLFM0 3 TLFM13 Figure 5 3 12 Motor control LSI block diagram Address decoder General purpose input port General purpose output port Motor control circuit ...

Page 143: ...A MBCG47492 502PF Figure 5 3 13 Control panel control block diagram Switches and LEDs are provided on the control panel board These switches and LEDs are controlled by serial parallel conversion by the MPLSI MBCG47492 502PF mounted on the control panel External b s Switch LED Parallel input serial con e sion Serial input parallel con e sion ...

Page 144: ... motor control boards and controls eight motors using the motor control LSI SPM0 3 SPI1 2 MLFM0 1 MLFI1 2 MLFM02 13 TLFM0 1 TLFI1 2 TLFM02 13 HCPPM0 3 APTCM0 3 FCSFMT0 3 RCSFMT0 3 RPM0 3 Figure 5 3 14 Motor controller block diagram Space motor drive circuit Line feed motor drive circuit Tractor motor drive circuit M M M Front rear tractor selection gear open close motor drive circuit APTC motor dr...

Page 145: ...ress bus data bus PWSTOP Figure 5 3 15 Block diagram for various motor control and drive circuits Space motor drive circuit Line feed motor drive circuit Tractor motor drive circuit APTC motor drive circuit Skew correction drive circuit Open close motor drive circuit M M M M M M MB90706 FFMC 16 Mot control circuit 3ch MTLSI MBCG46183 525PFV Front rear sheet feeders Long time excitation detection O...

Page 146: ... motor uses a constant current drive circuit as shown in Figure 5 3 16 The constant current drive IC is a hybrid IC used exclusively for motor driving The MB90706 stepping motor control circuit outputs SPM0 to SPM3 as phase data When the output signal is Hi Z H the FET in the HIC goes on to supply current to the motor phase Current I flows to SG2 through resistor R Voltage level IR for the SG2 whe...

Page 147: ...motor drive circuits The 4 phase line feed motor and tractor motor bi polar stepping motor are controlled by the constant current drive circuit shown below 34V HIC2 HIC3 HIC4 HIC5 HIC A3953SLB MLFM0 1 TLFM0 1 Motor SG2 MLFM0 3 TLFM0 3 TLFM02 13 MLFM02 13 LFALMS over current detection Figure 5 3 17 Bi polar motor drive circuit ...

Page 148: ...P signal to turn off 34 V It also notifies the MPU of the occurrence of a driver error Open close APTC skew correction and CSF motor control and drive circuits The phase data and switchover timing for the open close APTC skew correction and CSF motors are controlled by motor LSI control but current control is not performed CSF short circuit protection circuit If abnormal current flows to 34 V for ...

Page 149: ... PIN2 PIN24 Flyback absorption circuit Power supply MB90706 5 3 7 Print Head Driver Figure 5 3 19 is a print head drive circuit block diagram Main board 34V Print head 1 2 24 34V 34V FLYBK1 6 Transistor array BKSI SMA4032 PDV1 PD1 BKSI TIMER1 PDV2 PD2 BKSI PDV24 PD24 SG2 Figure 5 3 19 Print head drive circuit ...

Page 150: ...s elapsed the print head drive transistor is turned off and a flyback absorption signal FLYBK1 6 is output to activate the absorption circuit After the specified flyback absorption time has elapsed the absorption circuit is turned off TIMER1 T1 PDV1 24 main excitation T2 FLYBK1 6 flyback control signal Head current Figure 5 3 20 Print head drive circuit Error detection circuit Detection of abnorma...

Page 151: ...applied to the space motor but the left end sensor shows no change The sensor freezes in detection state or detects nothing Printer column management is abnormal the left end sensor is detected at a place other than the left end or vice versa 5 3 8 4 APTC Gap Alarm When the optional automatic paper thickness control mechanism is used a gap alarm occurs if Paper is thicker than the specified value ...

Page 152: ...ps to prevent damage to the power supply 3 Over voltage control If the 3 terminal switching regulator malfunctions in short mode over voltage may occur at the 5V output The detection section on the secondary side of this circuit detects the over voltage to prevent abnormal voltage from being output to the 5 V output 5 3 9 2 34 Switching Regulator This circuit consists of a one stone forward choke ...

Page 153: ...it block diagram Input connector AC input filter Rectifier Surge current preventive Something circuit Oscillation stop circuit latch Power control circuit Switching circuit 32 5V rectifier 5V rectifier Smoothing and regulating Smoothing circuit OVP detection PWSTOP Output filter Output filter ...

Page 154: ...ms of resistance when power is turned on This resistance suppresses surge current at power on During printer operation Because the power thermistor heats by itself by input current during printer operation resistance is lowered down to about one tenth of its initial value to reduce loss When power is turned on again If the power is turned on again immediately after it is turned off the power therm...

Page 155: ...02038 D229 4 9 1 35 9 9 21 SENSOR PCA KA02038 D230 4 9 1 25 9 9 22 RELAY CABLE 35P KA02038 D231 4 9 1 24 9 9 23 CSF CONNECT PCA KA02038 D232 4 9 1 22 23 9 9 24 FRONT CSF CABLE KA02038 D233 4 9 1 22 9 9 25 REAR CSF CABLE KA02038 D234 4 9 1 23 9 9 26 HCPP SW ASY KA02038 D235 4 9 1 34 9 9 27 S COVER TR F KA02038 D236 4 9 1 35 9 9 28 S COVER TR R KA02038 D237 4 9 1 35 9 9 29 LF TIMING BELT KA02038 D23...

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