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Summary of Contents for SQ-B50/2550

Page 1: ...EPSON Y502999010 A EPSON TERMINAL PRINTER 5Q B50 2550 TECHNICAL MANUAL ...

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Page 3: ...SQ BSO 2SS0 TECHNICAL MANUAL EPSON ...

Page 4: ...ject to change without notice All efforts have been made to ensure the accuracy of the contents of this manual However should any errors be detected SEIKO EPSON would greatly appreciate being informed of them The above notwithstanding SEIKO EPSON can assume no responsibility for any errors in this manual or the consequences thereof Copyright 1989 by SEIKO EPSON CORPORATION Nagano Japan ...

Page 5: ...RONICS TECHNICIANS IN THEIR LINE OF WORK 4 WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS WARNING 1 REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN 2 MAKE CE...

Page 6: ...REV A iii ...

Page 7: ...Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Provides a general product overview lists specifications and illustrates the main components of the printer Describes the theory of printer operation Discusses the options Includes a step by step guide for product disassembly assembly and adjustment Provides Epson approved techniques for troubleshooting Describes preventive maintenance te...

Page 8: ...REV A REVISION TABLE REVISION DATE ISSUED CHANGE DOCUMENT A April 28 1989 1st issue v ...

Page 9: ... CHAPTER 2 CHAPTER 3 CHAPTER 4 CHAPTER 5 CHAPTER 6 APPENDIX TABLE OF CONTENTS GENERAL DESCRIPTION OPERATING PRINCIPLES OPTIONAL EQUIPMENTS DISASSEMBLV ASSEMBLV AND ADJUSTMENT TROUBLESHOOTING MAINTENANCE vi REV A ...

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Page 11: ...4 1 3 INTERFACE SPECIFICATIONS 1 18 1 3 1 Parallel Interface Specifications 1 18 1 3 2 RS 232C Serial Interface Specifications 1 21 1 4 FUNCTIONS 1 24 1 4 1 Operating Controls 1 24 1 4 1 1 Power Switch 1 24 1 4 1 2 Control Panel 1 24 1 4 1 3 SelecType 1 28 1 4 1 4 Self Test Function 1 31 1 4 1 5 Hexadecimal Dump Function 1 32 1 4 1 6 Printhead Cleaning and Capping 1 33 1 4 1 7 Ink Charge Function ...

Page 12: ... Sheet Printable Area 1 5 Figure 1 5 Fan fold Paper Printable Area 1 7 Figure 1 6 Envelope Printable Area 1 8 Figure 1 7 Label Dimensions 1 9 Figure 1 8 Normal Character Matrix 1 15 Figure 1 9 Subscript Character Matrix 1 15 Figure 1 10 Superscript Character Matrix 1 15 Figure 1 11 Interface Timing Chart 1 18 Figure 1 12 57 30360 36 pin Connector 1 18 Figure 1 13 Handshaking for RS 232C Interface ...

Page 13: ...ons 1 2 Envelope Specifications 1 8 Dimensions and Weight 1 12 Fonts 1 13 Print Speed Printable Columns and Character Pitch 1 14 Printing Mode Horizontal Dot Density and Character Size 1 16 Bit Image Printing 1 17 8 bit Parallel IIF Connector Pin Assignment 1 19 Printer Select Deselect Control with the DC1 DC3 Code 1 20 Table 1 10 Serial Interface Handshaking 1 21 Table 1 11 RS 232C Serial l F Con...

Page 14: ...REV A ...

Page 15: ...n be performed without removing the CSF Low noise 50 dB A or less Highest printing speed in its class Draft characters 500 CPS LO characters 165 CPS An 80 column model for personal use and a 136 column model for office work are available Printer operation and selection of various settings are made easier due to the employment of a control panel with a multifunctional LCD Liquid Crystal Display The...

Page 16: ...ge Option C806111 Double bin cut sheet feeder for the 50 2550 C806101 Single bin cut sheet feeder for the 50 2550 C806091 Double bin cut sheet feeder for the 50 850 C806081 Single bin cut sheet feeder for the 50 850 C800042 Pull tractor unit for the 50 2550 C800032 Pull tractor unit for the 50 850 8143 New serial interface 8148 Intelligent serial interface 8165 Intelligent IEEE 488 interface 1 2 ...

Page 17: ...ecifications of the printer REV A 1 2 1 1 Printing Printing method Pin configuration Dot pitch Column spacing On demand type ink jet system 24 nozzles 12 nozzles x 2 rows 0 14 mm 1 180 2 54 mm 10 CPI 0 14 mm 180 DPI Nozzle Stagger 1 Nozzle Stagger 2 o l 1 2 0 o 0 3 o 0 O 141mm 1 180 o hO 282mm o 0 o 0 o 0 o 0 o 0 24 41mm j 23 1 18 Figure 1 2 Nozzle Configuration 1 3 ...

Page 18: ...6 or 1 8 or any of n 60 n 180 and n 360 programmable n is a user defined value From the rear Cut sheets and envelopes From the upper paper entrance Fan fold paper and labels From the lower paper entrance 62 msec Line spacing 1 6 4 0 IPS inches sec continuous paper feeding WARNING Do not turn the manual paper feed knob unless a paper jam occurs The reasons are as follows Usually reverse paper feedi...

Page 19: ...lly feed paper in the reverse direction after printing is completed 3 0mm 0 12inch or more __ i 182 364mm 7 2 14 3 inch 136 columns 3 0 m 182 257mm 7 2 10 1 inch 80 columns 0 12 in or more Printable Area 8 5mm 0 35inch or more P r i n t a b I e 25mm 0 98inch 364mm maximm A r e a a 5 m m L_ _ _ L J 33inch Figure 1 4 Cut Sheet Printable Area NOTE 1 The parenthesized values apply for the 50 2550 NOTE...

Page 20: ... width Paper thickness Paper quality Paper weight SO 850 101 to 279 mm 4 00 to 11 00 SO 2550 101 to 406 mm 4 00 to 16 00 0 065 to 0 10 mm 0 0026 to 0 004 High quality paper See Table 1 2 52 to 82 g m2 45 to 70 kg 14 to 22 Ib 1 6 ...

Page 21: ...tor 101 406mm 4 0 16 0 in 136 columns 101 279mm 4 0 11 0 in 80 columns I 1 I Printable Area I I 13mm 0 51 in or more 1 t l I 0 0 0 0 0 0 Printable 0 0 Area 0 0 0 0 0 0 0 k 0 0 0 8 5mm 0 33 In 0 0 or mfe 0 0 8 5mm O 33 In 0 0 O l 0 0 0 F XYZT 0 0 0 0 0 Printable 0 0 Area 0 0 0 0 0 0 1 80 columns 13mm or more when using 4 9 in width paper 21 mm or more when using 10 in width paper 46mm or more when ...

Page 22: ...curacy is not guaranteed outside of the printable area shown above by the oblique lines WARNING Set the envelope so that the longer side is becomes parallel to the platen Print at normal room temperature Do not manually feed the paper in the reverse direction after printing is comp leted Total paper thickness at the printable area and the non printable area must not vary more than 0 25 mm 0 009S 9...

Page 23: ...Print labels at normal room temperature Use only tractor feed labels The dimensions shown above are for the label itself For the dimensions of the entire sheet those for fan fold paper are applicable Never manually feed the paper in the reverse direction A label might adhere to the printer AVERY CONTINUOUS FROM LABELS AVERY MINI LINE LABELS 101 6mm 4 in 63 5mm 2 5 in 23 8mm 0 94 in 36 5mm 1 44 in ...

Page 24: ... range Within two years from the production date at normal room temperature 30 to 65 C transit 30 to 40 C storage NOTE 2 If the cartridge is transported at 65 C it must not remain at that temperature for more than 120 hours If it is transported at 40 C it should not remain at that temperature for more than one month NOTE 3 When the cartridge is stored at 40 C the shelf life is reduced to one month...

Page 25: ...quency range Rated current Insulation resistance Dielectric strength 49 5 to 60 5 Hz Max 1 0 AIAC 120 V version Max 0 6 AlAC 2201240 V version 10 M ohms or more at 500 VDC between the AC line andchassis 1250 VAC RMS 1 min between the AC line and chassis 120 V version 3750 VAC RMS 1 min between the AC line and chassis 2201240 V version 1 2 1 6 Reliability MCBF Mean Cycles Between Failure MTBF Mean ...

Page 26: ... non condensing NOTE 5 NOTE4 For the printhead only 10 to 85 non condensing NOTE5 For the printhead only 5 to 90 non condinsing Vibration resistance Operating 0 15G 10 to 55 Hz X Y and Z directions Storage 0 50G 10 to 55 Hz X Y and Z directions Impact resistance Operating 1G within Storage 2G within msec X Y and Z directions msec X Y and Z directions 1 2 1 8 Dimensions and Weight See Table 1 3 Tab...

Page 27: ...characters 14 international character sets See Table 1 4 Table 1 4 Fonts Family No 10CPI 12CPI 15CPI Proportiona I EPSON Roman 0 0 0 0 0 EPSON Sans Serif 1 0 0 0 0 EPSON Courier 2 0 0 0 EPSON Prestige 3 0 0 0 EPSON Script 4 0 0 0 EPSON OCR B 5 0 x EPSON OCR A 6 0 x EPSON Orator 7 0 x EPSON Orator S 8 0 x EPSON Draft 0 0 0 xx NOTE 0 resident desired pitch is made by software using selected font x p...

Page 28: ...97 99 Condensed 160 272 20 495 330 Condensed enlarged 80 136 10 248 165 15 pitch Normal 120 204 15 743 247 Emphasized 120 204 15 371 247 Enlarged 60 102 7 5 371 124 Emphasized enlarged 60 102 7 5 186 124 Proportional Normal Max 68 116 8 6 141 Min 160 272 20 330 Enlarged Max 34 58 4 3 71 Min 80 136 10 165 Condensed Max 137 233 17 1 283 Max 320 544 40 660 Condensed Max 68 116 8 6 142 enlarged Min 16...

Page 29: ... 6 F I 7 T G 8 Ascender Area l5pitchl H 9 S T 10 P 11 A S 12 C P 13 E A 14 00 C 15 E 16 02 17 18 19 20 21 Descender Area 22 23 24 I Face Width 01 1 Character Width CW Figure 1 8 Nomal Character Matrix 9 10 L R 11 E I 12 F G 13 T H 14 T 15 S 16 P S 17 A p 18 C A 19 E C 20 E 21 22 23 24 Figure 1 9 Subscript Character Matrix I 2 L R 3 E I 4 F G 5 T H 6 T 7 S 8 p S 9 A p 10 C A 11 E C 12 E 13 14 15 16...

Page 30: ... 360 21 1 2 X 3 2 La 12 pitch condensed 360 18 1 0 X 3 2 Max 42 2 6 X 3 2 La proportional 360 Min 18 1 0 X 3 2 Max 21 1 3 X 3 2 La proportional densed 360 Min 9 0 5 X 3 2 Max 28 1 8 X 2 3 La proportional super subscript 360 Min 12 0 7 X 2 3 La proportional super subscript Max 14 0 9 X 2 3 360 condensed Min 6 0 4 X 2 3 NOTE 1 Character size in the above table is forthe largest character and the val...

Page 31: ... 90 Yes 1224 720 33 00 32 Normal density 60 Yes 816 480 49 50 33 Double density 120 Yes 1632 960 24 75 24 pin 38 CRT graphics 11 90 Yes 1224 720 33 00 39 Triple density 180 Yes 2448 1440 16 50 40 Sextuple density 360 No 4896 2880 16 50 NOTE1 The parenthesized values apply to the SQ 850 NOTE2 m is the m in the command format ESC m n 1 n2 NOTE3 Yes and No in the column Adjacent Dot Printing Possible...

Page 32: ...nter Uses the ACKNLG and BUSY signals Input data and all interface control signals are TTL compatible 36 pin Amphenol 57 30360 or equivalent NOTE It is recommended that the interface cable be as short as possible BUSY ACKNLG DATA STROBE 5 tls 5 tlS typ typ Figure 1 11 Interface Timing Chart 14 AUTO FEED X IS NC 15 GND 17 CHASSIS GND lB NC I STROBE 2 DATAl 3 DATA2 4 DATA3 5 DATA4 5 DATA5 7 DATA5 B ...

Page 33: ... when the printer is initialized a line 14 AUTOFEED XT I feed is automatically performed by input of CR code See NOTE6 15 Not used 16 GND Ground for twisted pair 17 Chassis GND Printer chassis ground 18 Not used 19 to 30 GND Ground for twisted pair 31 INIT 16 I Pulse width 50 p s min active LOW input for printer initialization LOW indicates that some error has occurred in the printer 32 ERROR 0 Re...

Page 34: ...F LINE High DC1 Low High Not output Data entry disabled Error DC3 Low DC1 DC3 ON LINE High DC1 High Low NOTE1 Output after Data entry normal each data processing entry DC3 High Low Output after Data entry enabled NOTE 1 each data However input data is entry ignored waits for DC 1 NOTE 2 Low DC1 High Low NOTE1 Output after Data entry enabled each data normal processing entry DC3 High Low NOTE1 Outp...

Page 35: ...1 H When the number of bytes remaining in the input buffer reaches 512 or more the signal level goes to SPACE or an X ON code is sent to the host computer This indicates that the printer is ready to receive data DTR REV Signal MARK I 1ZV 1I 11 SPASE 1ZV l 512 byte Z56byte X ON X OFF byte Input Buffer Vacant Area X ON X OFF Protocol Word Length Bit Rate Logic Level Figure 1 13 Handshaking for RS 23...

Page 36: ... the input data 2 The word structure of serial data is 1 start bit 8 data bits bits parity Odd Even or none 1 or more stop bits Error Detection Parity error is printed Overrun error lgnored Framing error lgnored Connector D SUB 25 pin connector See Figure 1 5 Connector Pin Assignments Refer to Table 1 11 4 NC 5 NC G NC 7 NC a NC 9 NC 20 DTR 21 NC 22 NC 23 NC 24 NC 25 NC ASSIS GND D I I D I NAL GND...

Page 37: ...it data 20 DTR 0 Indicates when printer is ready to receive data MARK level indicates printer is not ready to receive data 11 REV 2nd RTS 0 Same as DTR 3 RXD I Receive data 7 SIGNAL GND Signal Logic ground level 1 CHASSIS GND Printer chassis ground NOTE Direction of signal flow is as viewed from the printer 1 23 ...

Page 38: ...OTE Do not turn the printer power on when the ink cartridge is not mounted 1 4 1 2 Control Panel This section describes switches and indicators on the control panel The control panel consists of nine switches six indicators and a 20 column LCD Liquid Crystal Display Figureure 1 16 shows the control panel The letter identifying each description below match those in the figure I I I I k m I EOWE e b...

Page 39: ...y This switch is valid only in the OFF LINE mode d TEAR OFF This switch is valid only when fan fold paper is used Pressing this switch advances the paper to the tear off paper cut off position Pressing it again feeds the paper in reverse to the TOF position This switch is valid both in the ON LINE and OFF LINE modes e ON LINE This switch sets the printer either ON LINE or OFF LINE Normally the pri...

Page 40: ... FEED switches are pressed simultaneously head cleaning is executed This operation is valid only in the OFF LINE mode See Section 1 4 1 6 e h RESET When the ON LINE and LOAD EJECT switches are pressed simultaneously the printer is reset This operation is valid both in the ON LINE and OFF LINE modes See Section 1 4 2 Indicators j POWER Green LED Lights when the power switch is on AC power is suppli...

Page 41: ...d Indicates that a self test is being executed Indicates that the printer is in the hexadecimal dump mode Displayed during TOF position adjustment See Section 1 4 1 9 Displayed during the tear off position adjustment See Section 1 4 1 10 Displayed if the printer cover is open Displayed if an error occurred The error number is displayed to indicate the error type For details see Section 1 4 3 4 and...

Page 42: ...are set they are stored in the memory which is backed up Since the settings will remain even after the printer power is turned off the values displayed on the LCD will be set as default values the next time the printer power is turned on Therefore the printer has no DIP switches Back up is performed with a battery and requires no maintenance The following page shows the operation flow in the Selec...

Page 43: ...ver perforation function for fan fold paper AUTO TEAR OFF On Off Set the auto tear off function See Section 1 4 1 10 LEFT MARGIN number of columns at 10 CPI Set the left margin in columns NOTE 2 RIGHT MARGIN number of columns at 10 CPI Set the right margin in columns NOTE 3 CG TABLE Italic Graphic Download Select the character code table ASCII code 80H through FFH COUNTRY USA France Germany UK Dem...

Page 44: ...Left margin 1 to 80 columns SO 2550 Left margin 1 to 136 columns NOTE 4 Displayed only when the serial interface is selected Not displayed when the parallel interface is selected NOTE 5 Displayed only when the Serial interface is selected NOTE 6 Since the following combinations are impossible they will be automatically ignored Draft Proportional OCR A 15 CPI OCR B 15 CPI Orator 15 CPI Orator S 15 ...

Page 45: ... location of the problem the host computer or the printer can be determined by executing the self test The self test operation flow is shown below Starting the self test in the Draft mode Turn the printer power on while pressing the I LINE FEED Iswitch Starting the self test in the LQ mode Turn the printer power on while pressing the IFORM FEED Iswitch Stopping or resuming the self test Press the ...

Page 46: ...lecType mode Some of the settings changed in the SelecType mode are reflected in the printing format If trouble occurs the hexadecimal dump function can be used to check if the data from the host computer is correct Entering the hexadecimal dump mode Turn the printer power on while pressing both the I FORM FEED Iand I LINE FEED Iswitches Stopping and exiting the hexadecimal dump mode Stop printing...

Page 47: ...when the printer is OFF LINE Automatic cleaning The printer automatically executes cleaning in the following cases When the printer power is turned on after 145 6 hours or more have passed since the last cleaning operation Power ON Cleaning is not executed CI aningp _ C Power ON Cleaning is executed F I I I I Figure 1 17 Head Cleaning Timing Chart When the printer power is turned on and the printh...

Page 48: ...on Figure 1 18 Ink Path Conditions at Delivery from the Factory The ink supply operation is used to prepare the printer after storage Step 1 Remove all protective parts that were installed for transit For the protective parts see Chapter 4 Step 2 Mount the ink cartridge Step 3 Turn the printer power on while pressing both the I ON LINE Iand I LINE FEED Iswitches During the ink supply operation the...

Page 49: ...state Loads the paper advances the paper to the TOP position then stops When the paper is in the printer Ejects the paper 1 When the printer is in the paper out state Loads the paper advances to the TOF position then stops When the paper is in the printer Executes back out Back out Feeds the paper in the reverse direction then ejects it Loading ejecting fan fold paper 1 Set the paper at the sprock...

Page 50: ... even after the printer power is turned off When the MICRO FEED switch is pressed ITOF ADJUST The message shown above is displayed on the LCD Since a TOF value can be set for four types of paper as shown below it is not necessary to check the value after changing the paper type The right side indicates the TOP range Cut sheet NOTE 2 Fan fold paper Paper for the single bin CSF Paper for the double ...

Page 51: ...the tear off function is started in either the manual or auto mode the printer advances the perforation to the paper bail position and displays the following message on the LCD IPLEASE TEAR OFF After the paper is torn off it is returned to the original position regardless of the mode manual or auto in any of the following cases When the I TEAR OFF I switch is pressed When the printer is set ION LI...

Page 52: ...ction any farther Fan fold paper If reverse paper feeding is executed by pressing the MICRO FEED switch after printing the paper will only be fed until the line printed last reaches the paper guide plate position The platen will not rotate in the reverse direction any farther If an eject back out operation is attempted just after printing it will be ignored and the following message will be displa...

Page 53: ...ually Press both the ON LINE and LOAD EJECT switches simultaneously Software reset When the ESC code is received from the host computer Hardware reset operation Printer mechanism is reset including head cleaning Input data buffer is cleared Print buffer is cleared Default values are set Software reset operation This differs from the hardware reset operation in the following points The printer mech...

Page 54: ...set is executed the following settings will be reset ON OFF of auto LF Select deselect of DC 1 DC3 ON OFF of superscript mode Items listed neither in the above lists nor in the SelecType mode are basically set OFF 1 4 3 Various Detection Functions This section describes each detection function of the printer 1 4 3 1 Ink End Detection Function This printer has an ink end detection function An ink e...

Page 55: ...er out state after the paper is loaded Even after the end of the paper is detected the printer does not immediately enter the paper out state so that printing can be continued up to 13 5 mm from the actual paper end by the forms override mechanism Therefore the printer enters the paper out state after feeding paper until the printhead reaches the position 13 5 mm from the bottom edge of the paper ...

Page 56: ...tate shut the printer coverb and set the printer ON LINE printing executed when the cover was opened will be resumed No data will be lost 1 4 3 4 Error Detection Mechanism The printer enters an error state when any of the following occurs Printer is set OFF LINE Paper out is detected See Section 1 4 3 2 Ink end is detected See Section 1 4 3 1 Cover open state is detected For the following errors t...

Page 57: ...an ink end is detected When paper out is detected When the cover open state is detected When an error is detected When the printer enters the SelecType mode During the TOF position adjustment at 8 5 mm and 22 mm positions 1 43 x specified times five times three times five times five times REV A ...

Page 58: ...table columns Otherwise they are basically the same The printer mechanism is composed of a printing mechanism carriage and printhead paper feed mechanism ink supply mechanism and pump The printer mechanism has the following features when compared with the conventional basic printer mechanism used in the SO series printers A paper top edge holding mechanism that enables use of the entire paper effe...

Page 59: ...upplies DC voltages to the mechanisms and control drive circuits and is composed of an AC cable switching board and regulator circuit By employing a switching regulator DC to DC converter circuits in the SEIPS SANPSE board were made very compact but which work very efficiently The 494 is employed as a controller in the regulator circuit 494 Figure 1 21 SEIPS Board Unit Figure 1 22 SANPSE Board Uni...

Page 60: ...am ROM 128 4M byte C G Character Generator 108 256K byte PSRAM 118 256K byte SRAM 13C Gate arrays Parallel Interface PIF 12C Memory Management Unit MMU 88 Printhead Controller PHC 68 DC Motor Control Unit DCU 48 Motor Control Unit MCU 2A The logic circuits are composed of the above ICs The analog circuits consist of the circuits for each mechanism a buzzer circuit and a battery circuit A lithium b...

Page 61: ... 20 column LCD Liquid Crystal Display LCD controller Non volatile memory 256K byte EEPROM Switches and LEDs Cover open sensor Other general purpose TTL ICs All of the above are contained on the single SEIPNL board The SEIPNL board is controlled by a serial connecting to the SEIMA board Figure 1 24 SEIPNL Board 1 47 ...

Page 62: ... cover for replacing the optional interface has been added to the upper case The printer cover is divided into two pieces and one of them is a half fixed type The direction of the slot for the optional cartridge was changed from vertical to horizontal The paper support separator was normally used for both cut sheets and fan fold paper but it should be removed when the CSF is mounted When the optio...

Page 63: ...it 2 22 2 3 8 12 VDC Supply Circuit 2 23 2 4 CONTROL CIRCUIT AND PRINTER MECHANISM OPERATION 2 24 2 4 1 Operation of the Paper Feed Mechanism 2 24 2 4 1 1 Paper feed mechanism 2 24 2 4 1 2 Paper Feed Motor Control 2 26 2 4 1 3 Paper Feed Motor Drive Circuit 2 28 2 4 1 4 Top Edge Holder Mechanism Operation 2 33 2 4 1 5 TE Holder Motor Contol 2 34 2 4 1 6 Top Edge Holder Motor Drive Circuit 2 36 2 4...

Page 64: ...ly Circuit and Reset Signal Circuit 2 71 2 4 5 Timer and Backup Circuitry 2 72 LIST OF FIGURES Figure 2 1 SO 850 2550 Component Connections 2 2 Figure 2 2 Summary of the Printer Mechanism 2 5 Figure 2 3 Overview of Power Supply Circuit Operation 2 6 Figure 2 4 Control Circuit Block Diagram 2 10 Figure 2 5 Power Supply Circuit Block Diagram 2 11 Figure 2 6 Filter Circuit SEIPS Board 120V Version 2 ...

Page 65: ...ve Forms 2 31 Figure 2 31 Excitation Signal Input Circuit 2 32 Figure 2 32 2 2 Phase Excitation Timing Chart 2 32 Figure 2 33 TE Holder Mechanism 2 33 Figure 2 34 Top Edge Holding Control Circuit Block Diagram 2 34 Figure 2 35 TM2 Signal and TEA Signal Operation Wave Forms 2 35 Figure 2 36 Top Edge Holding Motor Control Sequence Independent Mode 2 35 Figure 2 37 Top Edge Holder Moter Circuit 2 36 ...

Page 66: ... 55 Figure 2 63 Print Head Control Circuit Block Diagram 2 56 Figure 2 64 Charge and Discharge Circuit 2 57 Figure 2 65 Charge and Discharge Pulse Timing 2 58 Figure 2 66 Discharging Wave Form 2 58 Figure 2 67 Charging Wave Form 2 58 Figure 2 68 Vh Supply Main Circuit 2 59 Figure 2 69 494 Switching Wave Form 2 59 Figure 2 70 Constant Voltage Control Circuit 2 60 Figure 2 71 Relationship Between In...

Page 67: ...88 Timer and Backup Circuit Block Diagram 2 72 Figure 2 89 Backup Circuit Operation While Power OFF 2 73 Figure 2 90 Clock Circuit While Power OFF 2 73 LIST OF TABLES Table 2 1 Connector Summary 2 3 Table 2 2 Power Supply Applications 2 6 Table 2 3 Standard Voltages 2 30 Table 2 4 Carriage speeds 2 45 Table 2 5 Current Signals 2 49 Table 2 6 Drive Voltage 2 53 Table 2 7 Rotation of P Motor and Mov...

Page 68: ...REV A ...

Page 69: ...arious components A variety of ICs are used in the electrical circuits Please read this chapter in addition to the Appendix for details 2 2 Summary of the Theory of Operation The theory of operation for the component connections mechanisms and electrical circuits are explained here Although the basic contents of the explanations given here are subjective 2 3 explains the meanings of abbreviations ...

Page 70: ...rinter Mechanism CRH lE TE RL CM PE ICE TH CSF RLS EN PF TE PM VBS HEAD SEIMA Board Optional IIF Board Font Module Font Module ID Module r Ir I I I Extend I CG I Board I I 1 F 0 __ I I I I I I I I _____ ____ I SEIPNL Board Cover Open Sensor Host Computer CN2 SEIPS 120VAC SANPSE 2201240VAC Board Future Spec AC Power Figure 2 1 8Q 850 2550 Component Connections 2 2 ...

Page 71: ... 44 CN8 DC voltage input 24VDC 4 White CN9 DC voltage input 5VDC 12 12VDC 6 White CN10 Carriage home position 6 Yerllow CN 11 Ink end sensor signal input 4 Red CN12 Ink thermistor connection 2 Black CN13 TE CSF sensor signal input 5 White CN14 Release solenoide drive signal output Re 4 White lease sensor signal input CN15 Carriage motor drive signal output encoder 6 White signal input CN16 Paper f...

Page 72: ...The TE sensor generates signals to detect whether the paper is being held properly or not The paper exchange mechanism is used to drive the paper feed motor and converts the paper feed method to either friction or tractor This conversion is carried out by the release solenoid The release sensor generates a signal to detect the state of conversion The CSF sensor generates a CSF signal to detect whe...

Page 73: ...chanism TE Top edge holder motor drive signal TE SENSOR Top edge sensor signal RS Release solenoid drive signal RL Release sensor signal CSF CSF Sensor signal CM Carriage motor drive signal PF PE Paper feed motor drive signal Paper end sensor signal ENA B CRH HEAD lE ICE TH VBS PM Carriage motor encoder signal Carriage home position sensor signal Print head drive signal Ink end sensor signal Ink c...

Page 74: ...nsors 24 V DC Printer mechanism drive Carriage motor drive voltage Paper feed motor drive voltage Pump motor drive voltage Release solenoid drive voltage TE motor drive voltage Valve solenoid drive voltage 1 12 V CD Optional I F voltage Vh Printhead drive voltage Vx Protection voltage for abnormal power supply operation is detected Reset circuit Printhead data signal pull up voltage TE motor phase...

Page 75: ...9 216 MHz 18 432 2 MHz 512 Kbytes of physical address space can be accessed by the MMU which controls the memory and gate arrays described below Data buses and lower position address buses are connected between each gate array and the CPU and interfacing is carried out according to MMIO Memory Mapped I O address Read Write Memory 27512 PROM 12B The memory is the CPU program ROM which contains the ...

Page 76: ...Y ERROR etc INIT signal latch from the host and output to the printer READY lamp ON OFF RXD signal exchange serial interface I O sensor and switch signal reading LOAD EJECT RL and drive signal output LOAD EJECT lamp Release solenoid E05A22EA PHC Print Head Controller GB This E05A22EA PHC provides the following functions on a single chip According to these functions all of the print head drive cont...

Page 77: ...revolutions counter and output for stepping motor control Time control for phase switch over stepping Two channels SED1200 LCD Driver SEIPNL Board The SED 1200 which contains the CG for the LCD is a 20 column LCD controller In addition to the CG the SED 1200 also contains a CPU and internal memory and carries out operation by external commands The analog circuits are as follows Reset circuit The r...

Page 78: ...0 PROMIIZBI CS 1101 ASC I IRC I MMU III I INTJ INTD NMI RST MMIOIODI J L CPU ADDRESS BUS IAO AISI I e IIOCI R D WR Strobe DATA BUS mO D7l I ___ RST MMIr031 n Rr MMTDII n Rr MMIroZll Rr XTAL ASCI I I I 1 PTS I t E05A091ZAJ E05AZZlSBl r I E05AZ314Bl TIMER 4 4 Z4r DC 4 Circuit PF Motor I Print head Vh Vh Supply I CR Motor I Drive Drive Ci rcui t Drive f Back Up y TE Motor I Thermisterl y Encoder Circ...

Page 79: ...ming AC power passes first through a noise filter then through a full wave rectifying circuit The power then passes into the main switching circuit which outputs 24V and 12V DC Stabilization is provided by an over voltage limiting circuit located on the 24V line which feeds back to the main switching circuit The 24V line is also used to generate the 5V output 23V 12VDC 5VDC 24VDC Gl GP 12VDC F 1 r...

Page 80: ...ally generated noise from running though the AC line All the circuit s coils and condensers are designed to withstand fluctuations in the incoming AC power F 1 RI L 2A 4 7 5W Cl R2 0 22 390K N RO Figure 2 6 Filter Circuit SEIPS Board 120 V Version FIR 1 1 25A No o R2 390K R15 390K RO Figure 2 7 Filter Circuit SANPSE Board 220 240 V Version 2 12 ...

Page 81: ... feedback current of switching circuit IB flows in the direction of This causes a sharp rise and Q 1 quickly switches on 4 Current IL through coil 0 increases linearly over time During this time a voltage of 1 0 60T VIN is induced through coils 0 0 and 0 0 and a voltage of 19 60T VIN through coil For all these coils then current attempts to flow in the direction of however this direction opposes t...

Page 82: ...that is maintained 8 The sequence returns to the stage described in 3 above This repetition enables the circuit to maintain oscillation R7 is involved however only at the time of starting The above sequence is generally known as a self excitation type ringing choke converter R e e configuration Note that at the instant when Q 1 goes off in step 5 above the potential at point jumps violently upward...

Page 83: ... ent IB COII O I I I I I I I Iv Co 11 O 1 m_l_m 1 ml nm_l_m f mm_ f REV A Collector Current le Secondally Coli Current Output Current 120 V Version 2201240 V Version Figure 2 10 Main Switching Circuit Waveforms 2 15 ...

Page 84: ...off if the voltage exceeds 24V If excess voltage occurs reverse current will flow through Zener diode ZD20 PC 1 will be activated and the condition of the switching circuit will be as shown in Figure 2 12 R4 0 63 2W 1J le R13 1 8K RIO 2K D5 I 24V DC ZD20 22V GND PCl 5 4 r __ _ 4 2 I R12 I 3 6K 6 5 I I 3 1 L __ J 120 V Version 220 240 V Version Figure 2 11 24 VDC Voltage Control Circuit 2 16 ...

Page 85: ...mer s primary winding surpasses a certain value creating a potential difference of at least 2 5V across resistance R4 Resistance R4 in other words serves as an excess current detector 03 R4 R13 0 68 1 8k 1 3 2W 2W RIO 2k ICI LS431 120 V Version 220 240 V Version Figure 2 12 Switching Circuit When PC 1 Operation 7 60 VIN S 84Vlo R4 0 68 1 3 2W 2W R10 2k IC 1 LS431 120 V Version 220 240 V Version Fi...

Page 86: ...wo output transistors will be exactly alike The IC incorporates an internal oscillating circuit The oscillating frequency is determined by the external inputs to pins 5 and 6 In this circuit the frequency set by R29 and C25 is about 27kHz INPUT lP401 02SD R39 020 r 1 A1469 l20 1 R33 R38 10k R20 270 0 22 lwx2 R27 T 1 2WX 2 R28 R26 R21 200K 3 9K 20 C26 R3 r j ZD23 O 1 8K 021 D21 HZ5C 2 50Y Al020 ERC...

Page 87: ...tage is output when necessary to bring the voltage at the positive terminal to 5V Figure 2 17 shows the EA2 output conditions If the voltage of pin 16 becomes higher than that of pin 15 i e if over voltage occurs EA2 begins output PWM is activated on the basis of the output level and the circuit s output voltage is lowered Further details are provided subsequently o 20lls DIV Figure 2 15 Oscillato...

Page 88: ...voltage to appear at the positive terminal OUTPUT VOLTAGE X R34 R39 R38 1 R35 R35 becomes the load current flow see Figure 2 18 In other words higher current than this will trigger over current protection the output voltage will be reduced and the current will thereby be restricted Output Voltage R38 R34 R37 620 2K R35 10K Figure 2 18 Over Current Protection OCP 2 20 ...

Page 89: ...EA2 outputs is input to the negative terminal of the PWM a sawtooth waveform from the oscillator is input to the positive terminal and the PWM modulated waveform is output as shown in Fig 2 20 Output Control 13 GND RT CT Dead Time Control Non Inv Input Inv Input Non Inv Input Inv Input Feedback Reference Regulator Low Voltage J Stop OSC Dead Time COMPARATOR PWM COMPARATOR Always L Figure 2 19 IC 4...

Page 90: ...hows the Voltage Limiting Circuit In this circuit switching transistor Q 1 will go off if the voltages on the 24V line reaches about 30V or if the voltage on the 5V line reaches about 6V Zener diode Z022 is used to detect abnormal voltage on the 24V line Zener diode Z021 is used on the 5V line 05 24VOC line _ 5VOC line 021 6V 7 1 2 1 4__ _ PC 1 1 1 8 120V Ver Figure 2 21 Voltage Limiting Circuit 2...

Page 91: ...ations in the output voltage In particular output voltage may be quite high under no load conditions To prevent this problem dummy resistors R24 and R25 are inserted into the circuit 02 R31 2 1 4W F r I t J M 12VOC 28 2200P 023 C22 470 C23 470 R24 2 2K 112W R25 2 2K 112W 4 IlCI 4 1IJI JI __ 12VOC R32 2 1 4W GNO Figure 2 22 12 VDC Supply Circuit 2 23 Fuse resistor 120V VerI ...

Page 92: ...ing motor capable of bi directional rotation rotation in arbitrary amounts and stopping Motor power is transferred by the paper feed change mechanism to the platen friction and to the pull tractor unit tractor Specifications for the paper feed motor are shown below Type Drive voltage Coil resistance Drive method Consumption current Drive time Hold time Drive frecuency Minimum feed pitch 4 phase 96...

Page 93: ...d Transmission Gear Paper Feed Roller Platen Gear Paper Feed Motor Figure 2 23 Friction Feed Platen Paper Feed Roller Platen Gear Paper Tractor Tractor Gear Tractor Transmission Gear Paper Feed Motor Figure 2 24 Tractor Feed 2 25 ...

Page 94: ...FA A signals are shown in Figure 2 26 Furthermore HIGH LOW is set to ports P1 P3 according to similar address settings and the SCK RCK port settings Accordingly control of the constant current circuit is carried out The paper feed motor controls bi directional rotation and paper feed stop at selected positions From start to finish of one rotation sequence there are five modes 1 Pre drive rush 2 Ac...

Page 95: ...ck Diagram n Il l 1 1 JI 11 l JJ JJ II 11111 I r III r r r r I L U W L J W i 6V 6V 6 ne me Upper step TM1 signal Lower step PFA A signal Figure 2 26 TM 1 Signal and PFAIA Signal Operation Wave Forms Drive Current Phase Swithing Speed I r _ l IlI QIII CA 0 04AI 0 74A I I l I I I I I I I 3 Conatant Sp ed I Pre Drive Z Acceleration Control 4 Deceleratlon 5 Post Drlve Rush Control Control Rush Figure ...

Page 96: ...o phases AB AA and CD BB that use the same circuit Reference Current Motor Main Current rz RC to Protect Abnormal Chopper Operation Vb Vcc f Auxiliary Excitation Motor RC to Set RZ8 Current Current Chopper OFF Time C7 C8 J T __ J s n IN OUT OUT r f I R30 REF Excitation Current C9 C 10 I Current Peak _ Chopper OFF Signal Transfer Current Control and _ Circuit Counter Electromotive I Detection Time ...

Page 97: ...d to the motor coil For this purpose the coil current channel switches from I ON to I OFF 7 When I OFF flows the direction of the current that flows to resistors R27 and R28 changes The CaMP 1 feedback voltage VRS V drops from Vref and CaMP 1 again reverses 8 The CaMP 1 output stage is housed in the open collector circuit In 7 because CaMP 1 output goes HIGH the Td voltage Vtd slowly operates acco...

Page 98: ...d the applied standard voltage switches to RF terminals A and B of SLA7020M The stepping motor is powered by the current propor tionalized to Vref voltage Transistors Q7 and Q8 go ON by port P3 of the XDCU 2A going LOW Accordingly if the Td terminal is ground level the motor can be stepped arbitrarily Table 2 3 Standard Voltages P1 P Standard Voltage V Calculated Value H H 0 054 H L 0 914 L H 0 05...

Page 99: ...REFA COMPI 2V C6 C7 T 470P Gp I CD RSA t ION R5 R27 R28 IOIW Gp Gp 02 Figure 2 29 Constant Current Drive Circuit T I T2 T3 1 I I I TO o o O o I I I P J I Vee Vee Vr ef 1 I I 8 0 0 o e 8 0 8 e Figure 2 30 Section Operation Wave Forms 2 31 ...

Page 100: ...l input The output is divided into the A phase output and the A phase output that passes through the converter For this reason when the excitation signal input IN goes HIGH the A phase output side goes ON and when input IN is LOW the A phase output goes ON The B phase works in the same way Figure 2 32 shows the 2 2 phase excitation timing chart PhaseA Output INA PhaseA Output I i Ch0 ppin9 _ _ J C...

Page 101: ...older plate moves forward and backward TE holder motor specifications are listed below Type Drive voltage Coil resistance Drive method Consumption current Drive frequency Feed pitch 4 phase 8 pole PM type pulse motor 24VDC 10 42 2 1 ohms phase 25 C 2 2 phase excitation constant voltage control Maximum time 0 66 A phase 26 4V 39 9 ohms Drive time ave 0 32 A phase Hold time 100mA phase 360 pps 4 IPS...

Page 102: ... motor with the two different speeds shown below 1 Synchronous mode This drive is for when the platen paper feed motor turning speed and the TE holder plate speed are approximately equal such as when the print characters are near the top edge of the paper micro feed and line feed While the paper feed motor is driven in the 4 phase mode the TE holder is driven in the 1 phase mode 2 Independent mode...

Page 103: ...REV A Upper step TM2 signal Lower step TEA signal Figure 2 35 TM2 Signal and TEA Signal Operation Wave Forms Phase Swithing Speed Acceleration Cont rol Constant Speed Control Area Deceleration Control Figure 2 36 Top Edge Holding Motor Control Sequence Independent Mode 2 35 ...

Page 104: ...In A2 02 of the phase switching signal board only those phase coils which become high receive the common voltage The waveforms at point A and B of Figure 2 37 are shown in Figure 2 38 24V 5V OCUl2AJ TEENB 14 PO A2 t V f v j I 02 Common Voltage Swithing Motor Coil GH Figure 2 37 Top Edge Holder Motor Drive Circuit I I I I h r 1 I r1V1 Ih il r1 In rl 1 1 1 50 5V 10me Omt Upper 011 014 collectors A w...

Page 105: ...top edge of the paper Operation is as follows The TE roller is linked to the photo interrupter through the lever If the paper end is present there will be pressure on the roller which will cause the lever that normally covers the photo sensor to be released which in turn will cause a LOW signal to be output Paper feed paper eject paper changeover and the TEAR OFF function are controlled in accorda...

Page 106: ... I I I I I I I L 2000 10KO GND 5V Frame Figure 2 40 Sensor Interface TE detect ion area Paper 4mm ABCDE WXYZ L Frame M 0 0 Frame R 0 0 0 0 0 0 4mm PE detect ion area 68mm 97mm 165mm Figure 2 41 Senor Detection Area 2 38 31 8mm ...

Page 107: ...and the motor s operation is as follows When feeding is in normal direction When feeding is in reverse direction switchover is from friction mode to tractor switchover is from tractor mode to friction mode The type of mode in use is detected by means of the release sensor which is a microswitch attached to the release lever When friction mode is in effect the release lever is open and when tractor...

Page 108: ...IGH 24VDC is applied to the release solenoid the release sensor signal is also input to PIF port P11 An RSEN signal LOW is used to indicate that tractor feed has been selected Figure 2 44 shows the operating waveforms for the release solenoid drive 24 PlO PII PIF1I2CJ EOSA24GA RS Release Solenoid RSEN Driver RS Circuit GH RU1rocfor ease sor Rei Sen Release Solenoid Figure 2 43 Block Diagram of Pap...

Page 109: ...e frame M The detects the presence or absence of the CSF unit If the CSF unit is not in place the leaf switch is open otherwise the leaf switch is closed CSF Sensor Specifications Sensing method Voltage Current Leaf switch 5VDC 5 Resistance load 0 6 1 0 mA C S F Frame M le Figure 2 45 CSF sensor 2 41 ...

Page 110: ...irection of the carriage motor can be determined by a phase comparison The encoder A phase detects carriage motor revolutions and control the speed in addition the A phase signals standard head drive printing timing The carriage home position sensor generates the carriage home position signal based on which the print starting location is calculated The sensor is comprised of a photosensor and the ...

Page 111: ...hase difference Magnetic style encoder A B 5VDC 5 max 70mA min 20 0kHz Magnetic resistance element 120 p r equivalent to 180 pulses inch H min 4 5VDC L max OAVDC Short waves 50 20 90 30 Carriage Home Position Sensor Specifications Detection method photo interruptor Withstandable voltage to 30VDC Sink current 0 3mA at 10VDC Figure 2 46 Carriage Mechanism 2 43 Head adjust lever ...

Page 112: ...m the encoder and the carriage home position sensor and provides this information to the CPU The encoder signal is also used as a basis for generating the print timing signal which is output to the printhead control circuit The functions of the carriage motor control circuit can be broadly divided into the following Speed revolution speed control Drive current control Carriage position control rev...

Page 113: ...ed loop PLL or period control PRC Table 2 4 Carriage speeds Mode No Set speed kHz Set frequency 115 Control type Print density OPI 3 2 97 337 PLL 360 2 4 45 225 240 1 5 94 168 PRC 180 0 8 91 112 120 The set speeds shown above are the basic speed modes i e the speeds which normally apply during printing Accelerated speed or reduced speed modes are applied to these standard speeds on a line by line ...

Page 114: ...se errors are determined and are sent to the motor These signals control the ON or OFF state of motor energizing and thereby maintain the set motor speed L Setting Speed J 1 c 1 Internal Speed Signal Encoder A Phase Motor OFF Drive ON Signal Figure 2 48 PLL control at normal speed Encoder A Phase Internal Speed Signal Motor Drive Signal Internal Speed Signal OFF ON f Figure 2 49 PLL control at acc...

Page 115: ...ignal is later than the one shot time lapse then the motor will be energized for the single cycle time of the next encoder A phase signal If on the other hand the positive going edge is earlier than the one shot time lapse energizing will not occur Thus the circuit maintains the desired set speed by causing motor energizing to be switched ON and OFF in sync with the encoder A phase signal Figure 2...

Page 116: ... control The circuit when ON causes forced energizing The activation of the circuit is enabled by a command written into the gate array For speed reduction modes under both PLL and PRC control activation of the full energizing circuit enhances the features of the motor s negative going edges causing forced energizing that is in opposition to the motor This allows for rapid braking ON Motor ON OFF ...

Page 117: ... detailed description will be provided later Table 2 5 shows a variety of current signal combinations given at each port Table 2 5 Current Signals Motor Operation Rotation PNP1 PNP2 NPN1 NPN2 Contents CW LOW HIGH HIGH Cu rrent flow from CM to LOW CM Acceleration constant velocity Current flow from CM to CCW HIGH LOW LOW HIGH CM Hold LOW LOW HIGH HIGH CM and CM have the same electrical potential CW...

Page 118: ...r pre driven circuit in the OCU The current level detected at R49 and then cut off is set at approximately 2 5A by Resistor R77 Wave forms are shown in Figure 2 54 24 PNP10 I Vx R77 NPN2o t Motor Pre driver 0 56 V R49 0 22 3W PNP2 NPN1 Upper CM 06 cathode Lower CM 07 cathode Figure 2 53 Carriage Motor Drive Circuit I 1 J 1 JI 4 Cl I r 1 1 I If lJ f 20 I 0 1 0 2ms 0 2ms Figure 2 54 Carriage Motor C...

Page 119: ...t speed Note that the pulse signal is constant with the 900 phase lag The reverse phase difference is observed if the motor is driven in the opposite direction During acceleration or deceleration of the motor the pulse cycle is not constant Figure 2 56 shows the relational control positions I I IOil t l I 5V V O ms 0 1 ms Upper wave ENA signal Lower wave ENB signal Figure 2 55 Encoder Output Wave ...

Page 120: ... values for each printing mode The calculated pulse cycle goes to the PHC Print Head Controller 68 gate array Figure 2 56 shows the operational wave form The PTS the wave form shown on the lower side changes its cycles for the required printing mode velocity and print density PTS alteration is conducted by a command execution to the DCU I r Ir I r If II l po r la IT 11 IV I II 5V IV p 21Ins Upper ...

Page 121: ... The continuous type printer has a higher running cost because a steady flow is ink is required Some printers try solve this problem by re cycling unused ink Printer Head Specifications Print method Nozzles Nozzle config uration Drive conditions On demand ink jet 24 nozzles Arranged alternately Ink temperature driving voltage follow control See Table 2 6 Table 2 6 Drive Voltage Temperature q 5 25 ...

Page 122: ...oir Reservoir Ink flowing to the inside of the print head accumulates in the reservoir Nozzle Accumulated ink in the reservoir is injected through the nozzles Nozzle construction is shown in Figure 2 58 Piezoelectric Element Reservoir Head Damper I f 1 1 I I I I I I I I I I J I J I I I I _ _ 1 _ _ Figure 2 58 Head Construction Ink Path Nozzle Pressure Chamber Piezoelectric Element Diaphragm Printe...

Page 123: ...al electric discharge to expand the pressure chamber and allow ink to flow into the pressure chamber Pressure Chamber E I Figure 2 61 Printing Principle 2 3 Discharging Ink injection is carried out by distortion of the piezoelectric element as it is rapidly charged Figure 2 62 Printing Principle 3 In short printing occurs only when the piezoelectric element is distorted or expanded Suction and inj...

Page 124: ...eloped by the internal selector register to coincide with the printing direction and nozzle arrangement even odd Therefore the CPU has to begin the printing process and the actual printing task is executed automatically by the direct memory access controller and the DCU Charge and discharge control Developed character data is latched at output ports H 1 to H24 The PHC generates printing pulses cha...

Page 125: ... come on and the electric charge of the piezoelectric element discharges through the source terminal of the FET The piezoelectric element is usually charged with voltage Vh The discharge time depends on the drive pulse which the DCU generates Charge pulse High pulses are provided from CHA and CHB of the DCU The leading edge of the pulse makes transistors QC 1 and QC2 turn on then the piezoelectric...

Page 126: ...B Figure 2 65 Charge and Discharge Pulse Timing I L 5V 50V 0 1 Ins 0 11Ins Upper Discharge pulse PHC CHA B Lower Piezoelectric voltage CN20 Figure 2 66 Discharging Wave Form I M rl n n In I l I I lV 50V 0 1 rns 0 1 rns Upper Charge pulse PHC CHA B Lower Piezoelectric voltage CN20 Figure 2 67 Charging Wave Form 2 58 ...

Page 127: ... in Figure 2 67 For more details refer to the SEIMA board circuit diagram location 9 10 1 The circuit employs the DC DC converter method The 24VDC supplied to the primary stage of the voltage transformer T1 is controlled by the switching motion of the chopper switching controller 494 3C Two error amplifiers EA 1 and EA2 form the constant voltage control and current limit circuits respectively of t...

Page 128: ... temperature detected by the temperature resistor to ensure that the ink is injected at a constant rate The value of Vref changes proportionally with the fluctuation resistance of the temperature sensor The Vref fluctuation range is set by the adjustment of the variable resistor VR 1 Figure 2 70 shows the relationship between ink temperature and drive voltage R41 549 VR1 500 R37 2 43K R36 4 64K Vh...

Page 129: ...55 R52 Figure 2 72 Current Limit Circuit Over voltage limit circuit The over voltage limit circuit is a cut off circuit to protect the piezoelectric element of the head from damage due to excessive Vh The voltage setting at 27 6 27 0 6 VDC by zenadiode ZD3 and VBE of 024 maintains a voltage drop level of R218 R21 7 at about 168VDC Accordingly if the Vh output level exceeds 168VDC the 024 turns off...

Page 130: ...ng parts Ink cartridge Cartridge holder Ink end sensor Cartridge sensor Pump unit Pump mechanism pump motor Cap mechanism head cap cap damper valve solenoid Cleaner mechanism brush mechanism Wasted Ink Absorber Ink Pack Ink Flow Ink Cartridge Valve Solenoid Filter Figure 2 74 Outlined Ink Mechanism System 2 62 ...

Page 131: ...vided Pump Motor Specifications Type Specifications Rated voltage Starting torque Rated torque Rated speed Coil resistance DC motor 24VDC 10 More than 180 g cm at 200 21 6V 30 g cm 3800 rpm 60 ohms Pump pin plate IPumping I Cap clutch cam Capping I Pump motor Brush gear Figure 2 75 P Motor Power Transmission Table 2 7 Rotation of P Motor and Movement of Others P motor drive direction CCW CW Pump o...

Page 132: ...CCW P1 cw PO TH3C10 1 B GH Figure 2 76 Pump Motor Control and Drive Circuit Block Diagram 2 4 3 3 Pump Mechanism The pump sucks ink from the head toward the wasted ink pack side of the ink cartridge by which means it keeps the head full of ink and the nozzle free of bubbles and dust Pump reciprocation is the same regardless of motor drive direction therefore the ink flow direction also remains the...

Page 133: ...Capping Mechanism The capping mechanism protects the head from drying and from bubbles Negative pressure is generated inside the cap as the pump is driven while the valve is closed Ink can therefore flow through the cap from the head to the pump The clutch cam which is driven by the pump motor by means of the pump drive gear is in direct contact with the cap support therefore cam movement generate...

Page 134: ...therefore if the pump is operated while the cap is firmly attached to the front surface of the head ink will flow into the pump When the valve is open on the other hand ink cannot flow under any circumstances and regardless with whether or not the pump is operating When ink is being sucked in the inside of the cap is being subjected to negative pressure a relatively large force is therefore requir...

Page 135: ... of the SEIMA Board Circuit Diagram in the Appendix When the solenoid draws for valve opening a rush current first occurs which then switches to a maintaining current Transistor 03 normally switches wile 04 is turned on during discharge of the charge accumulated at C5 This discharge provides the rush current bl pi I I 17I I 11 20 V 2OV O gs Upper 04 collector terminal Lower 03 collector terminal F...

Page 136: ... compressed by the ink end detection plate spring As ink is consumed and the pack shrinks the ink end detection lever rotates counterclockwise causing to ink end detection plate to the right as indicated in the Figure This movement drives the ink level indicator At the moment when the ink completely runs out the part of the ink end detection lever marked as A in the Figure completely unlocks and t...

Page 137: ...nt Ink cartridge present closed HIGH LOW no ink remaining open Ink cartridge not open HIGH HIGH installed open Wasted ink absorbent Ink end detection spring Level indicator I 1 A Ink end detection plate Figure 2 84 Composition of Ink Cartridge Ink draining needle lE IEC sensor I Ink supply needle I Figure 2 85 Composition of Ink Cartridge Holder 2 69 ...

Page 138: ...m shuts in air between cap and valve 5 The pump sucks ink from the head and charges fresh ink into the head 6 By means of the valve mechanism the vacuum within the cap is released 7 Detaches the cap from the head Note the following explanations that pertain to operations a Power on under normal conditions Capping Ink charging 1 sec Release capping All nozzles inject 100 times wait b Power on under...

Page 139: ...DISC terminals of the MMU 8B The reset generator is equipped with an MMU that generates power on reset signals for various chips This is described in the block diagram of Figure 2 86 The initialization signal from the host is latched at the 12 pin PIF 12C from where it goes to the INT2 terminal of the CPU 1 QC where the interrupt software is reset For more details about the circuit see the SEIMA b...

Page 140: ... The backup circuit backs up SRAM 43257 13C and the timer circuit while the power supply is off SRAM stores the panel settings and is maintained even when power is off The circuit also monitors 5VOC When power is supplied 5VOC is provided to the Vbak line If the voltage of the 5VOC line drops down to 4 6VOC Z02 voltage 4 0V 022 VBEO 6V 3 6VOC ofthe lithium battery BAT 1 is supplied to the Vbak lin...

Page 141: ... 2V 2V 0 25 Upper 5VDC line Lower Vbak line Figure 2 89 Backup Circuit Operation While Power Off Ill 11 V I 2V O 5 292 13D CLK1 input clock Figure 2 90 Clock Circuit While Power Off 2 73 REV A ...

Page 142: ......

Page 143: ...igure 3 3 Figure 3 4 Figure 3 5 Figure 3 6 Figure 3 7 Figure 3 8 Figure 3 9 Figure 3 10 Figure 3 11 Figure 3 12 Figure 3 13 Figure 3 14 SQ 2550 with Double bin Cut Sheet Feeder 3 4 SQ 850 with Single bin Cut Sheet Feeder 3 4 Double bin CSF with Printer Dimension Diagram 3 7 Single bin CSF with Printer Dimension Diagram 3 7 Cut Sheet Feeder Operation 3 9 Cut Sheet Feeder Disassembly 3 10 Side Cover...

Page 144: ... Table 3 1 Major Optional Interfaces 3 1 Table 3 2 8143 Jumper Settings 3 2 Table 3 3 DIP Switch Settings 3 3 Table 3 4 Bit Rate Selection 3 3 Table 3 5 8143 Handshaking Control 3 3 Table 3 6 Dimensions and Weight 3 7 3 ii ...

Page 145: ...es 8172M 128K 128 K byte buffer parallel interface Buffer Size Flag Control X ON OFF Max Bit Rates Control BPS RS 232C 8143 None a a 19200 8145 2K a x 9600 8148 2K 8K a a 19200 Current Loop 8149 32K a a 19200 8149M 128K a a 19200 Buffer Size Function Listen Only Address Operation Operation IEEE 488 8161 None L x a a GP IB 8165 2K 8K AH L DC a a a Available x Not available Refer to section 3 2 1 NO...

Page 146: ...nterface cable if connected should be disconnected before using the 8143 board because parallel interface input is used to read jumper settings and DIP switch status Jumper Settings Table 3 2 shows the 8143 interface jumper settings Table 3 2 8143 Jumper Settings Function J1 ON TTY TXD is pulled up to 12V through 470 ohm resistor J2 ON TTY TXD RET is connected to signal ground J3 ON TTY RXD is pul...

Page 147: ...5 ON ON ON ON 1 800 OFF ON ON ON 110 ON ON ON OFF 2 400 OFF ON ON OFF 134 5 ON ON OFF ON 4 800 OFF ON OFF ON 150 ON ON OFF OFF 9 600 OFF ON OFF OFF 200 ON OFF ON ON 19 200 OFF OFF ON ON 300 ON OFF ON OFF 19 200 OFF OFF ON OFF 600 ON OFF OFF ON 19 200 OFF OFF OFF ON 1 200 ON OFF OFF OFF 19 200 OFF OFF OFF OFF NOTE In the current loop operation normal data transfer cannot be guaranteed at a bit rate...

Page 148: ...nvelopes in the same manner as fanfold paper Can use fanfold paper without dismounting the cut sheet feeder Has two bins so that two types sheet can be used Double bin type Allows user to load a sheet by manual insertion Is easy to change the stacker either to bin 1 or bin2 by the control panel operation Double bin type Requires no electrical connection to and from the printer Is easy to mount ont...

Page 149: ...eets Envelopes Loading Position Cut sheets Envelopes Paper Skew Cut sheets Envelopes Reliability MCBF 100 sheets maximum 10 sheets maximum 1 mm 0 039 Within the following conditions Paper weight 64 82 g m2 Temperature 5 35 C Humidity 15 80 2 mm 0 079 Within the following conditions Paper weight 45 91 g m2 Temperature 5 35 C Humidity 15 70 0 3 0 Within the following conditions Paper weight 64 82 g ...

Page 150: ...tested prior to regular use Paper with a textured embossed glossy or hammered surface also must be tested individually prior to regular use 2 The cut sheet feeder may not feed smoothly with some kinds of paper 3 Using curled or curved paper causes the paper to jam Therefore paper should always be removed from the platen when the printer is not in use Paper Width and Length Cut sheets Envelopes Pap...

Page 151: ...7mm 17 2 346mm 13 6 3 5Kg 80 col Single 428mm 16 9 337mm 13 3 346mm 13 6 2 6Kg Cut sheet feeder with printer 136 col Double 664mm 26 4 608mm 23 9 470mm 18 5 20 0Kg 136 col Single 664mm 26 4 508mm 20 0 470mm 18 5 17 6Kg 80 col Double 537mm 21 1 608mm 23 9 470mm 18 5 15 5Kg 80 col Single 537mm 21 9 508mm 20 0 470mm 18 5 14 6Kg LO q N o r q 432 608 Figure 3 3 Double bin CSF with Printer Dimension Dia...

Page 152: ...ns so that two different sizes of paper can be handled The panel setup or control command ESC EM can be used to select a bin and specify the cut sheet feeder mode Command ESC EM Format Where LPRINT CHR 27 CHR 25 n n 0 Cancels the CSF mode n 1 Specifies bin 1 n 2 Specifies bin 2 n 4 Specifies the CSF mode n R Ejects a sheet NOTE This command should be input when paper is loaded 3 8 ...

Page 153: ...paper feed roller The combination of the gears makes the paper feed sub roller always rotate in the same direction paper loading direction egardless of the rotational direction forward or reverse of the paper feed motor The hopper unit sends out cut sheets one by one using the paper holder which holds the paper against the paper loading roller and the separation notches positioned at the left and ...

Page 154: ...column model as an example Figure 3 6 shows a flow chart of the cut sheet feeder disassembly procedure I Cut sheet feeder disassembly I I 3 3 4 1 3 11 I I Side Cover Removal I 3 3 4 2 3 11 I 3 3 4 4 3 13 1 Hopper Unit Removal I Idle Lever Assembly Removal I 3 3 4 3 3 12 Paper Loading Roller Assembly Removal Figure 3 6 Cut Sheet Feeder Disassembly 3 10 ...

Page 155: ...tion of paper support shaft holder L from the hole in side frame L then rotate shaft holder L 90 so that the projecting portion faces up Do the same thing for shaft holder R Remove the Ering at the left of the paper loading roller shaft then slide the paper loading roller shaft to the right to remove the shaft holder from side frame L Remove the shaft holder at the right of the paper loading rolle...

Page 156: ... paper loading roller cover is secured with two studs Take out the paper loading roller shaft by pulling it in the R direction then remove the paper loading roller L assembly and the paper loading roller R assembly Paper loading roller covers Figure 3 10 Paper Loading Roller Assembly Removal ASSEMBLY POINTS When installing the paper loading roller assembly be careful of the correct left right orie...

Page 157: ...ly Removal 1 Remove the E ring from the paper loading sub roller shaft at the side frame L side then remove the paper loading sub roller shaft holder Remove the four CBS set screws M3 x 6 from paper guide plate A and remove paper guide plate A with the paper loading sub roller shaft assembly with the sheet guide lever and paper loading sub gear still assembled Remove the left idle lever shaft hold...

Page 158: ...e paper loading sub roller shafts holes in of side frames Land R When reassembling the idle lever assembly check that the plastic film on the front frame is not caught by the idle lever assembly Idle lever assembly Paper loading sub roller r tJ J l ll lL_ _ 1 I Plastic film Figure 3 14 Idle Lever Assembly Installation 3 14 ...

Page 159: ...echanism Unit Disassembly 4 20 4 2 6 1 Paper Bail Removal 4 20 4 2 6 2 Carriage Motor Removal 4 21 4 2 6 3 Carriage Unit Removal 4 22 4 2 6 4 Paper Feed Motor Removal 4 25 4 2 6 5 Release Trigger Solenoid Removal 4 26 4 2 6 6 Pump Unit Removal 4 27 4 2 6 7 Pump Unit Disassembly 4 28 4 2 6 8 Ink End Sensor and Thermistor Set Removal 4 33 4 2 6 9 Home Position Sensor Removal 4 35 4 2 6 10 Top Edge S...

Page 160: ...Removal 4 13 Figure 4 9 Control Panel Removal 4 14 Figure 4 10 Cover Open Sensor Removal 4 14 Figure 4 11 Tractor Unit Removal 4 15 Figure 4 12 SEIMA Board Removal 4 17 Figure 4 13 SEIPS SANPSE Board Removal 4 17 Figure 4 14 Cable Wiring 4 18 Figure 4 15 Printer Mechanism Removal 4 19 Figure 4 16 Paper Bail Removal 1 4 20 Figure 4 17 Paper Bail Removal 2 4 20 Figure 4 18 Carriage Motor Removal 1 4...

Page 161: ...t Guide Plate Removal 4 36 Figure 4 44 CSF Sensor Removal 4 36 Figure 4 45 Top Edge Sensor Removal 4 37 Figure 4 46 Paper Eject Guide Plate Spring 4 37 Figure 4 47 Platen Unit Removal 4 38 Figure 4 48 Top Edge Holder Set and Top Edge Holder Transmission Shaft Set Removal 4 39 Figure 4 49 Top Edge Holder Transmission Shaft Set Installation 4 40 Figure 4 50 lower Paper Guide Removal 4 41 Figure 4 51...

Page 162: ...n Adjustment 4 54 Figure 4 67 Head Slant Adjustment 4 55 Figure 4 68 Bidirectional Printing Adjustment 4 55 LIST OF TABLES Table 4 1 Ink Handling and Countermeasures 4 2 Table 4 2 Repair Process 4 4 Table 4 3 Tools 4 6 Table 4 4 Necessary Measuring Instruments 4 6 Table 4 5 Abbreviations List of Small Parts 4 7 Table 4 6 Form and Abbreviated Part Name of Screw 4 7 4 iv ...

Page 163: ...ls The battery might burn or burst if the internal solution leaks out or if it shorts internally If the solution in the battery leaks and it is left as it is for a long time the printer components around the battery could be damaged d Do not charge the battery If it is charged gas would be generated and it could ignite or burst e Do not disassemble the battery or deform it using pressure The gas i...

Page 164: ...e printhead head or to perform maintenance When transporting the Ink leakage due to vibration or Discharge the remaining ink printer impact Cap the printhead parts When sending the repaired Attach the protective the printer to the customer customer Clogged printhead due to the Clean the ink path then to printer being sotred for a long the printer being drain the time with ink in the system A clean...

Page 165: ...d Draining the ink The ink can be drained by mounting the special ink draining cartridge in the ink cartridge holder and executing a cleaning All the remaining ink in the ink path can be removed drained Cleaning After the maintenance is completed clean the ink path before sending the printer back to the customer The ink path can be cleaned by mounting the special cleaning cartridge in the cartridg...

Page 166: ...printhead from Turn the printer power 1 Capping being damaged on off Remove the remaining ink Draining Cleaning 2 Ink draining from the ink path cartridge two times 3 Repair Check the results of the Self test 4 Self test Ink cartridge repair Drain the ink used in the self Draining Cleaning 5 Ink draining test cartridge two times 6 Ink path Clean the ink path with the Cleaning Cleaning cleaning spe...

Page 167: ...he 0 ring might be cut or cracked which could cause ink leakage When tightening the tube set screw the tube must be fully inserted O ring Tube Set Screw 1 Insert the tube fully 2 Set the O ring 3 Tighten the tube set screw Figure 4 2 Tightening Tube Set Screw Lubrication After disassembly assembly and adjustment be sure to perform lubrication adhesive application and cleaning as indicated in Chapt...

Page 168: ...hickness gauges T 0 5 mm 0 B776700301 NOTE 2 T O 4 mm 0 B776700101 T 0 6 mm 0 B776700501 Tension gauge 3 000 g 0 B747700200 Torque wrench 6 mm X 1 kg E589 E B765106901 Position alignment tool E693 E F765113301 Adjustment cartridge E687 E Y591008020 Cleaning cartridge E691 E F348881000 Draining cartridge E690 E F348871000 NOTE 1 0 Standard commercial tool E Epson exclusive tool NOTE 2 Select either...

Page 169: ...her CPS 0 Cross Pan head S tight with Outside toothed washer CPS P Cross Pan head with S tight with Plain washer CP 0 Cross Pan head with Outside toothed washer CP P Cross Pan head with Plain washer HNO Hexagon Nut with Outside toothed lock washer PW Plain Washer LS Leaf Spring RE Retaining ring type E Table 4 6 Form and Abbreviated Part Name of Screw Head Body Washer assembled Top Side 1 ross rec...

Page 170: ...NING Read Section 4 1 before disassembly Remove the protective parts for transportation before disassembly Remove paper and the ink cartridge before disassembly The disassembly sequence in this section is grouped into five parts 1 Printhead replacement 2 Case removal 3 Circuit removal 4 Printer mechanism removal and 5 Printer mechanism disassembly This manual describes in detail the disassembly an...

Page 171: ...4 2 6 2 I 4 21 4 2 6 5 I 4 26 14 2 6 11 I 4 38 Carriage motor removal Release trigger IPlaten unit removal solenoid removal 4 2 6 4 I 4 25 Paper feed motor removal 4 2 6 6 I 4 27 4 2 6 10 I 4 36 Pump unit removal Top edge sensor board and CSF sensor removal 4 2 6 3 I 4 22 4 2 6 12 I 4 39 Carriage unit removal Top edge holder set and 4 2 6 8 I 4 33 Top edge holer transmission shaft Ink end sensor t...

Page 172: ...Step 2 Remove the upper case See Section 4 2 2 1 Step 3 Move the paper bail up Move the printhead to a position near the 20th column by moving the carriage manually while pressing the head cap set Head Cap set Paper bail Pirnthead FPC Cover Figure 4 4 Moving the Printhead Step 4 Remove the CC screw 3 X 12 at the rear of the printer which secures the FPC cover then remove the FPC cover Step 5 Disco...

Page 173: ...Supply Needle Tube set screw CPB M3 X 8 O ring Tube Set Screw Ink Supply needle CCS M3 X 8 O ring Remove the CCS screw M3 X 15 securing the tube cover base then remove the base Remove the tube which is wound from the base Remove the CCS screw M3 X 8 securing the filter set to the base frame then remove the filter set Remove the CPB screw M3 X 8 securing the filter set to the tube cover base then r...

Page 174: ...base check that it is set correctly Check that the connected portions between the ink supply needle set and filter set and the tube cover base and tube cover spring are straight See Figure 4 6 When reattaching the tube cover spring base first set the tube against the base then attach the tube cover spring hook using your finger Pass the tube cover spring base under the base frame of the printer me...

Page 175: ...one Step 3 Unlock the two hooks at the front by inserting a hand from the rear side of the upper case then lift the upper case a little bit Insert your hand through the space at the right side and disconnect the control panel cable from connector CN6 on the SEIMA board Step 4 Lift the front of the upper case by using the back of the case as a fulcrum CBB M4 x 25 Figure 4 8 Upper Case Removal Sheet...

Page 176: ...ontrol panel to the upper case then remove the panel Connectors SEIPNL Board Notch B Figure 4 9 Control Panel Removal ADJUSTMENT REQUIRED Control panel cable After replacing the control panel the following adjustment is required Printing alignment See Section 4 3 5 4 2 2 3 Cover Open Sensor Removal Step 1 Remove the control panel See Section 4 2 2 2 Step 2 Turn the upper case over again to the ori...

Page 177: ...on 4 2 2 1 Step 2 Remove the two CB N S screws M3 X 6 at the left and right which secure the tractor unit Step 3 Pull the tractor unit backward CB N 8 M3 x 6 Tractor Unit Figure 4 11 Tractor Unit Removal ASSEMBLY POINT When reattaching the tractor unit match the unit and the guide pin and tighten the screw while pushing the unit frontward 4 15 ...

Page 178: ... 2 Remove the tractor unit See Section 4 2 3 Step 3 Remove the connector cover for optional interface Step 4 Disconnect the cables from the all connectors on the SEIMA board 14 cables CN3 and CN8 through CN20 Step 5 Remove the two CPS P screws M3 X 8 securing the shield plate to the lower paper guide Step 6 Remove the two CPS P screws M3 X 8 securing the board and the noise shield to the base plat...

Page 179: ...ase plate Remove the CB O screw M4 X 8 securing the ground wire of the AC cable inlet to the base plate Step 5 Remove the AC cable inlet and the POWER switch from the lower case Step 6 Loosen the three bent tabs fixing the board to the lower case then remove the board r I I I I L _ CN9 CN8 CN12 CN 10 CN 11 CNB CN17 CN18 CN19 I SEIMA Board I I I 1 I I SEIPS Board I SANPSE Board CN2 Pr inter Mechan ...

Page 180: ...l care is required for handling the ink Read the notes in Section 4 1 thoroughly before starting the removal WARNING Be sure to check that the printhead is capped correctly before removing the unit Be sure to remove the ink cartridge before removing the unit Even after the above two steps some ink remains between the printhead and ink needle Because the ink might leak due to impacts and get the in...

Page 181: ...from the lower case NOTE The mechanism mounting screw at the left front is hidden under the printhead when the printhead is capped You can see the screw by moving the printhead to the right while holding the cap section with your finger as shown in Figure 4 4 Mounting screw Figure 4 15 Printer Mechanism Removal Mounting Screw CPS 0 M3 X 6 Mounting Screw ASSEMBLY POINT When reattaching the mechanis...

Page 182: ...Step 2 Move the carriage to the center of the platen See Figure 4 4 Step 3 Remove the paper bail spring each from frame L and R Step 4 Remove the E ring from each frame L and R then remove the paper bail with the scale paper bail shaft holder and paper bail spring Paper bail Carriage E ring Paper bail spring Figure 4 16 Paper Bail Removal 1 Paper bail spring I E ring Step 5 Remove the E ring with ...

Page 183: ...curing the carriage motor then remove the carriage motor Carriage drive pulley CP P M3 X 6 Figure 4 19 Carriage Motor Removal 2 ASSEMBLY POINTS Reattach the carriage motor so that the label on the carriage motor faces up When reassembling the carriage motor adjust the backlash between the carriage motor and carriage drive pulley If the backlash is too tight printing pitch might become abnormal or ...

Page 184: ... 8 securing the motor mounting plate set to frame R then remove the motor mounting plate from frame R NOTE Be careful not to apply stress to the lead wires of the CR motor CPS P M3 x 8 Belt tension plate Pulley Timing belt Frame R CCS M3 x 8 Motor mounting plate Figure 4 20 Motor Mounting Plate Removal Step 5 Remove the two N4 nuts securing carriage guide shafts A and B to frame R then remove the ...

Page 185: ...lder link from guide shaft A Frame L N4 Shaft hold link Figure 4 22 Shaft Holder Link Removal Step 7 Remove carriage guide shafts A and B from frame L by sliding them along the U groove of frame L then remove them from frame R Frame L Groove 0tf Carriage guide shaft A Figure 4 23 Carriage Removal 4 23 B Frame R ...

Page 186: ...esive lock to the belt holder set screw See Chapter 6 Lubricate the felt 0 2 before inserting the carriage guide shafts into the carriage unit When inserting them be careful not to move the felt See Chapter 6 Reattach carriage guide shaft A so that the larger chamfer of eccentric cut is on the upper side See Figure 4 23 Timing belt Figure 4 25 Timing Belt Assembly ADJUSTMENT REQUIRED After removin...

Page 187: ...3 X 6 securing the paper feed motor then remove the paper feed motor Paper feed motor CP P M3 X 6 Figure 4 26 Paper Feed Motor Removal Lead wire Spacer clip ASSEMBLY POINT When reattaching the paper feed motor adjust the backlash between the gear pinions tightly However be careful if the backlash is hot too tight or the printing pitch might be abnormal and printing noise might become loud 4 25 ...

Page 188: ...se trigger solenoid with the release trigger lever set Step 6 Remove the CC screw M2 X 10 securing the release sensor then remove the release sensor Release trigger solenoid Release trigger lever set CP P M3 X 6 Lead wire Release trigger lever spring Release sensor CC M2 X 10 Cable clamp Figure 4 27 Release Trigger Solenoid Set Removal ASSEMBLY POINT Apply adhesive to the release sensor set screw ...

Page 189: ...ning tube from both the pump and the hook of the valve Tube set screw Pump Ink draining tube Figure 4 28 Ink Discharge Tube Removal Step 3 Move the carriage to the right Step 4 Remove the CC screw M3 X 6 and CCS screw M3 X 8 which secure the pump unit to frame L and the base frame respectively then remove the pump unit Pump unit Pump unit CC M3 X 6 Figure 4 29 Pump Unit Removal ASSEMBLY POINT Afte...

Page 190: ...areful because the remaining ink in the pump unit and ink tube might leak When installing the pump unit check that the ink tube and 0 ring are not cut or damaged and insert the ink tube fully I Pump unit disassembly I 1 I 4 29 Pump motor set removal 2 I 4 30 3 I 4 31 Pump set removal Valve set removal 4 I 4 31 5 I 4 32 Cap set removal Cleaner set removal Figure 4 30 Pump Unit Disassembly Procedure...

Page 191: ...or _ CB M2 6 X 5 Figure 4 31 Pump Motor Set Removal ASSEMBLY POINTS Install the pump motor so that the label side faces down and apply abhesive to the two screws securing the pump motor See Chapter 6 After installing the pump motor set lubricate the point at which where the pump motor pinion pump transmission gear and pump drive gear engage one another 4 29 ...

Page 192: ...ecuring the pump set then remove the pump set Ink tube CC M3 X 5 Figure 4 32 Pump Set Removal ASSEMBLY POINTS Install the pump set so that the pin follower of the pump set and the pin of the pin plate mate correctly Apply locking compound to the two screws securing the pump set Screw Hole Dowel Pin Follower Figure 4 33 Pump Set Installation 4 30 ...

Page 193: ...Figure 4 34 Valve Set Removal 4 Head cap set removal WARNING Be careful not to deform the head cap aligning spring Step 1 Take the head cap aligning spring out using tweezers Step 2 Loosen the tube set screw on the pump set then remove the ink tube from the pump set Step 3 Loosen the tube set screw on the valve set then remove the ink tube from the valve set Step 4 Remove the head cap set from the...

Page 194: ...e prop Head cap spring Head cap support Snapfit P frame prop Figure 4 36 Head Cap Support Removal Step 5 Pull the cleaner set out from the P frame prop Cleaner set P frame prop Figure 4 37 Cleaner Set Removal ASSEMBLY POINTS When installing the snap fit attach it so that a click can be heard which means the notch of the snap fit has mated with the groove of the prop During this installation rememb...

Page 195: ...screw at the metal tube side of the filter set then remove the ink supply needle from the filter set Step 4 Remove the four eBB screws M3 X 12 securing the cartridge holder unit to the base frame Step 5 Shift the cartridge holder unit a little bit toward the front of the printer mechanism unlock the three hooks of the holder from the cut outs of the base frame then remove the cartridge holder unit...

Page 196: ...hen attaching the micro switch to the ink end sensor be careful of the assembly procedure the black lead wirte must be installed first and mounting direction see Figure 4 41 Check that the lead wires from the ink end sensor set and thermistor set run correctly When attaching the cartridge holder unit to the base frame turn the printer mechanism over so that the unit can be attached easily and chec...

Page 197: ... Frame L Step 4 Remove the home position sensor from frame L then pull out the lead wire connector Frame L Lead wire Wire band Home position sensor Figure 4 42 Home Position Sensor Removal NOTE Be careful not to stress the lead wire of the home position sensor ASSEMBLY POINT Install the wire band securing the home position sensor so that the cable clamping section comes outside of frame L See Figu...

Page 198: ...he papger eject guide plate and frame M middle Step 4 Remove the E ring from the shaft of frame M then remove the paper eject guide plate and paper eject paper guide plate spring Paper eject guide plate E ring Paper eject guide plate spring CBS M3 X 6 CB N M3 X 6 Frame M Figure 4 43 Paper Eject Guide Plate Removal Step 5 If necessary cut the cable clamp which binds the lead wires from the top edge...

Page 199: ...Y POINTS Before installing the upper paper guide insert the top edge sensor board into frame M Apply adhesive to the screws securing the top edge sensor board and CSF sensor See Chapter 6 Adjust the positions of the upper paper guide and top edge sensor board so that the lever will be positioned at the center of the photo coupler on the top edge sensor board Hook the paper eject guide plate spring...

Page 200: ...ge holder transmission shaft by moving the platen unit along the slits of frames M and R Top edge holder Transmission shaft Shaft holder CBS M3 X 6 Figure 4 47 Platen Unit Removal ASSEMBLY POINT Apply abhesive to the screws securing each of the platen shaft holders Land R ADJUSTMENT REQUIRED After removing the platen unit the following adjustment is required during the assembly procedure TE sensor...

Page 201: ...reful not to lose them Disc springs are also used at the right side of the platen Moreover the disc springs are different from those of the disc springs used on the left side When removing the disc springs used on the right side keep them separated from those used at the left side Step 1 Remove the platen unit See Section 4 2 6 11 Step 2 Pull out platen shaft holder L from the platen shaft Step 3 ...

Page 202: ...allel insert platen shaft L into the platen shaft Platen shaft holder L Top edge holder transmission shaft set Plain washer E P g Platen shaft holder R Figure 4 49 Top Edge Holder Transmission Shaft Set Installation ADJUSTMENT REQUIRED After removing the top edge holder set and top edge holder transmission shaft set the following adjustments are required during the assembly procedure TE sensor rol...

Page 203: ...se frame CCS M3 X 6 Figure 4 50 Lower Paper Guide Removal Step 3 Remove the CCS screw M3 X 8 securing the paper end sensor set then remove the paper end sensor set Studs Paper end sensor CCS M3 X 8 Figure 4 51 Paper End Sensor Set Removal ASSEMBLY POINT When installing the paper end sensor set confirm that the two studs of the sensor are inserted correctly in the holes of the base frame then tight...

Page 204: ...Step 3 Remove the four paper feed lever springs from the hooks of the base frame then remove the paper feed roller shaft set Paper feed roller shaft Paper feed lever spring Base frame Figure 4 52 Paper Feed Roller Shaft Set Removal ASSEMBLY POINT Before installing the paper feed roller shaft set perform lubrication as indicated in Figure 6 4 in Chapter 6 4 42 ...

Page 205: ... 11 Step 4 Remove the paper bail See Section 4 2 6 1 Step 5 Remove the two screws S tight up set hexagonal M3 X 6 securing the paper guide plate then remove the paper guide plate set Screws Paper guide plate set Figure 4 53 Paper Guide Plate Set Removal Step 6 Remove the two CCS screws M3 X 8 securing the support frame then remove the support frame Figure 4 54 Support Frame Removal 4 43 ...

Page 206: ...g a screwdriver through the holes two in frame L Remove frame M from the cutout in the base frame while tilting frame M Wire clip Frame L Holes Figure 4 55 Frame M Removal Step 1OUnlock the three bent tabs of the TE motor cover then remove the TE motor cover from frame M Tabs Cc Tabs TE motor cover Figure 4 56 TE Motor Cover Removal 4 44 ...

Page 207: ...pace exists between frame M and the stopper of the base frame ADJUSTMENT REQUIRED After replacing the TE motor the following adjustments are required TE sensor roller position adjustment See Section 4 3 2 Carriage timing belt tension adjustment See Section 4 3 3 Platen gap adjustment See Section 4 3 4 Printing position alignment See Section 4 3 5 NOTE When you want to remove only the paper guide p...

Page 208: ...g the other parts such as the carriage motor This adjustment is required in the following case When the trigger solenoid or trigger lever is removed This adjusts the clearance at the point where the trigger solenoid lever meets the release planetary gear set Clearance should not be too narrow nor too wide If this adjustment is not performed correctly the following may result Paper selection select...

Page 209: ... 6 Trigger solenoid Figure 4 60 Tightening Down The Trigger Solenoid 4 3 2 TE Sensor Roller Adjustment This adjustment can be performed without removing the printer mechanism But the following parts should be removed besides the upper case Paper eject guide plate Platen cover This adjustment is required in the following cases When the TE sensor roller is removed When the TE sensor is removed The T...

Page 210: ...sensor roller position by moving the TE sensor set forward or backward so that the dimension of the projected portion above the platen surface becomes the same as that of the cutout on the position alignment tool First set the TE roller to the lowest position then adjust the roller position upward step by step until the roller is stopped by the position alignment tooL Step 5 Tighten the TE sensor ...

Page 211: ...n the screw CCS M3 X 8 clamping the belt tensioner on the left side of the carriage mechanism temporarily NOTE Confirm that the carriage timing belt is not twisted Step 2 Place the top of the tension gauge in the hook of the belt tensioner Step 3 Clamp the mechanism pull the tension gauge and tighten the screw firmly with the gauge reading as follows Tension 2 6 0 2 Kg CCS M3 X 8 Tension gauge I B...

Page 212: ... screws clamping the print head to the carriage temporarily so that you can move it manually Right side CP P M3 X 6 Left side CP P M3 X 12 Step 4 Confirm that the head adjust lever is in the usual place at the narrow side Refer to section 1 2 1 1 Step 5 Confirm that the inclined adjusting pin on the left side is at the center the direction of the projection is exactly to the left If it isn t remov...

Page 213: ...wo different ways in ADJUSTMENT REQUIRED indicated in Section 4 2 What each representation means is described below Example Printing alignment see Section 4 3 5 Perform all the adjustment items described in this section Printing alignment only for bidirectional printing see Section 4 3 5 Perform only the bidirectional printing alignment described in this section Skip the other adjustment items Whe...

Page 214: ...tal dots the printed dots shift Bidirectional printing adjustment This adjustment is required in the following cases When the horizontal printing positions characters are misaligned When either the control panel printer mechanism or both are replaced unit replacement When any part related to carriage operation such as the carriage carriage motor timing belt guide shaft or frame is replaced or remo...

Page 215: ...artridge in optional cartridge slot A and turn the printer power on Basic operation To skip an adjustment item Press the MICRO FEED switch To execute an adjustment item Press the LOAD EJECT switch NOTE Select either the 80 or 136 column model Since the PROM used is common to both the 80 and 136 column models this mode must be reset each time the adjustment is started so that the PROM can identify ...

Page 216: ...lt the tool but attach it closely TE Holder E693 OK Press the LOAD EJECT switch RETURN NG Paper guide plate set For the dimension indicated by the tool Press the MICRO FEED J switch as many times as needed Press the LOAD EJECT switch Nallow Press the MICRO FEED v switch as many times as needed Figure 4 66 Top Edge Holder Position Adjustment 4 54 ...

Page 217: ...n I I I b OK a or c NG whitch best I I I categorizes the printing 8 I I I I I I 08 RETURN Move the printing to the center of the platen and loosen the head fixing screw see Figure 4 5 Turn the adjusting pin and make the printhead as it was When the printing is categorized as pattern a Turn the adjusting pin clockwise When the printing is categorized as pattern c Turn the adjusting pin counter cloc...

Page 218: ...lignment is still the smallest in the selected pattern Press the LOAD EJECT switch check printing in the Draft and high speed modes RETURN Press the MICRO FEED 6 switch the number of times corresponding to the value Select the pattern whitch has the least vertical misalignment among the above three patterns Input the pattern data again Since alignment is based on the LO characters aliment in the D...

Page 219: ... 1 Figure 5 2 Figure 5 3 Figure 5 4 Figure 5 5 Figure 5 6 Table 5 1 Table 5 2 Table 5 3 Table 5 4 Table 5 5 Table 5 6 Unit Replacement 1 5 3 Unit Replacement 2 5 4 Unit Replacement 3 5 5 Unit Replacement 4 5 6 Unit Replacement 5 5 7 Unit Replacement 6 5 8 LIST OF TABLES Unit Replacement Numbers 5 1 Symptom and Reference Pages 5 2 SEIPS SANPSE Board CN2 Output Voltage 5 3 Paper Feed Motor Coil Resi...

Page 220: ...REV A ...

Page 221: ...ch specifies procedures for identifying defective components by using the diagnostics tool 5 2 UNIT REPLACEMENT This section correlates symptoms with the potentially defective units that may be causing them The unit numbers are listed in Table 5 1 Table 5 1 Unit Replacement Numbers Name of Unit Description Unit No SEIPS Board Power Board of 120V Y502202000 SANPSE Board Power Board of 2201240V Y567...

Page 222: ...5 5 Print quality is bad print density or other No paper is fed Abnormal paper feed The amount of paper fed is irregular 5 6 Paper jam occurs No paper is fed when you press the return key or change pages key in OFF L1NEmode Control panel does not oper You can not select function modes using panel 5 7 ate correctly switches You can not select ON LINE or OFF LINE mode You can not set panel settings ...

Page 223: ...oard Replace the power board No Yes Replace the printer mechanism END Figure 5 1 Unit Replacement 1 Table 5 3 SEIPS SANPSE Board CN2 Output Voltage Connector Terminal Voltage 3 4 GND 1 2 Approx 24 V 7 8 Approx 4 8 V 5 6 GND 9 Approx 12 3 V 11 7 V 10 Approx 12 3 V 11 7V NOTES 1 The voltages shown in Table 5 3 are measured when the printer is onstandby 2 The voltages in parentheses are measured with...

Page 224: ...EIMA board Yes Check the cable No connect ion on the control panel No Yes Connect the cable correctly Turn off the power Yes supply and try to Replace the SEIPNL move the carriage board manually No No Replace the pr inter mechanism Yes Yes No Yes Replace the power board END Figure 5 2 Unit Replacement 2 5 4 ...

Page 225: ...or print density is incorrect Yes Clean the ink path and re ink Refer to Section 3 1 2 Yes No No No Is each connector on the SEIMA board connected correctly Yes Execute the adjustment for pr inthead slant and Bi d print Replace the pr inter mechanism No No Connect each connector correctly Yes END END No Replace the SEIMA board Figure 5 3 Unit Replacement 3 5 5 ...

Page 226: ... or anything 1 else nothing abnormal within the paper the paper path Remove any stray pieces ar other fore Ign obJects Yes Turn off the power supply and turn the No aper feed knob Does the knob turnsmoothly END END Figure 5 4 Unit Replacement 4 Table 5 4 Paper Feed PF Motor Coil Resistance Measurement Terminal Resistance PF motor reed wire connector 1 pin 5 pin 2 pin 27 0 4 ohmns 3 pin 6 pin 4 pin...

Page 227: ... panel does not operate correctly REV A Yes Replace the control panel Yes END No No No Yes Connect the control panel cable correctly Replace the SEIMA board Replace the power board Figure 5 5 Unit Replacement 5 5 7 ...

Page 228: ...t ion for troubleshoot Ing Option Check the setup values 1between printer and 1 host computer Parallel Replace option interface board No Replace the Interface cable between pr inter and host computer No Adjust the Setup values No Replace the SEIMA board Figure 5 6 Unit Replacement 6 5 8 ...

Page 229: ...the repair that will correct the fault The Table 5 3 shows the main components used on the SEIPS SANPSE boards Table 5 5 SEIPS SANPSE Board Parts List Board Location Parts Name Description Parts No Name SEIPS IC 1 L5431 AA Adjustable Plesison REG X440164319 SANPSE IC20 TL494CN PWM Control X440034940 020 2SA1469 Transistor 60V 5A 20W X300146900 03 21 2SA1020 Transistor 50V 2A 900mW X300102009 02 2S...

Page 230: ... coils operate at all open 4 3 6 2 11 12 Q 1 is dead Check the voltage waveforms at Q 1 Replace Q 1 collector D I r l t kl l 50V 20I us The voltage Q3 IC1 PC1 Check the voltage waveforms at Q3 Replace Q3 on the 24V or ZD20 is collector IC 1 PC 1 or line is below dead ZD20 normal I ZV 20 JS Q2 is dead Check the voltage waveforms at the Q2 Replace Q2 collector r J J 1I I lU 11 JL I L1 IJU J 10 0 r i...

Page 231: ...oes not op at 5V line line is dead erate at all is dead IC20 is dead Check the oscillation waveform and the Replace IC20 switching waveform J 1 J Ij A V J V V V V Ij 1V 20 s Oscillation Waveform IC20 5Pin r J r U w 10rv 10IJJS Switching Waveform IC20 8Pin 020 or 021 Check the switching waveform Replace is dead either 020 or 021 10 V 2 JS 020 Collector 5 11 ...

Page 232: ...r The voltage The 24V Check the 24V line does not on the 12V power supply operate at all line is dead circuit is dead Fuse resistor Measure the resistance values of R31 and Replace R31 or R32 R32 either R31 or is open R32 Transformer Measure the resistances of transformer coils Replace T1 coils are 7 8 8 11 open 5 12 ...

Page 233: ...nsert the diagnostic cartridge in the printer s option slot A I ROM cartridge I Jo Printer Option slot A 5 4 4 Functions and use of diagnostic ROM This ROM is equipped with 36 diagnostic modes which can be selected and executed using the LCD panel and 10 switches a Power on If power is turned on with the diagnostic ROM installed the CPU first lights the READY LEDs on the control panel This indicat...

Page 234: ...O 11 B ADDR ERR RAMO 11 B REF ERROR In case of an error on IC 13C only RAM 1 1 3C RD WR ERR I I RAM 1 13C ADDR ERR I Replace RAM chip IC 11 B Replace RAM chip IC 11 B Replace RAM chip IC 11 B or IC8B Replace IC 13C Replace IC 13C In case of errors on both IC 11 Band IC 13C The READY LED blinks on off Replace IC 11 C and IC8B When the RAM check finishes the buzzer eill sound After the above diagnos...

Page 235: ... 01 Switch check 02 LCD LCDC check 03 Panel LED check 04 Prog ROM check 05 CGO l0B ROM check 06 CG1 13B ROM check 07 Case open sensor 08 HP sensor 09 Ink cart sensor 10 Ink end sensor 11 PE sensor 12 TE sensor 13 C S F sensor 14 CR encoder check 15 CR position reg 16 Re lease sensor 17 Buzzer check 18 Bsy Ack Pe Er H L 19 At Sin P S lnt RD 20 Parallel data RD 21 RS 232C loop back 22 PF motor drive...

Page 236: ...mode to check the ROM in the diagnostic ROM cartridge When this is selected the read address and data from the ROM is displayed on the LCD When the checksum is displayed at the end of this check compare it with the correct value They should both match To exit this mode press the ON LINE switch IAD xxxx BK OO DT xx I AD read address BK bank number ln this mode BK is always 00 DT read data 05 CGO 10...

Page 237: ...correct value To exit this mode press the ON LINE switch AD xxxx BK OO DT xx AD read address BK bank number In this mode BK ranges from 40H to 7FH DT read data 07 Case open sensor Select this mode to check the case open sensor The state of the case open sensor is displayed on the LCD panel Check case open sensor by operating it manually i e open and close the printer cover To exit this mode press ...

Page 238: ...m can not be corrected by replacing the paper end sensor please replace IC6B G A 12 TE sensor Select this mode to check the paper sensor The state of the paper sensor is displayed on the LCD panel Check the paper sensor by operating it manually i e move the paper in front of the sensor To exit this mode press the ON LINE switch If a problem can not be corrected by replacing the paper exist sensor ...

Page 239: ...zzer drive circuit is activated To exit this mode press the ON LINE switch 18 Bsy Ack Pe Er H L Select this mode to check the operation of the control signal output lines on the parallel interface When this mode is selected the PE ERROR BUSY and ACK signal lines change between HIGH and LOW at a constant rate so that the operation of each line can be checked easily To exit this mode press the ON LI...

Page 240: ...ode to drive the paper feed motor In this mode the following displays appear on the LCD LF speed L E start IMODE O COUNTER 10001 LF Select the paper feed speed mode L E Execute paper feed COUNTER Step value of paper feed motor Press the ON LINE switch during paper feeding to stop the paper feed motor Press the ON LINE switch again to exit this mode 23 PF phase HI LO Whe thal the waveforms from IC2...

Page 241: ...this mode the waveforms of IC2A and Q 11 to Q 14 for the TE motor drive circuit can be easily observed To exit this mode press the ON LINE switch 28 CR motor check Select this mode to drive the carriage motor In this mode the carriage speed selection menu is displayed on the LCD as follows F speed L E start speed O L E start LF Select CR speed mode L E Drive the CR motor Press the ON LINE switch d...

Page 242: ...32 EEPROM check Select this mode to check the EEPROM on the control panel unit This mode performs two tests a read write check and an address check This EEPROM stores very important data for the mechanism In this test ifthe CPU does not detect an error in the EEPROM the current data is restored to the EEPROM so do not turn the printer power off until the test is completely finished 33 146H timer c...

Page 243: ...o drain the ink from the printer mechanism When this mode is selected the LCD displays the following LF clean FF charge LF same as cleaning operation same as pressing the cleaning switch FF same as charging operation same as pressing cleaning switch while turning power on If the LF key is pressed The LCD panel displays the following to select loop time LF No FF Start Loop OO FF Start LF select loo...

Page 244: ...t the data in the EEPROM LF switch Decrement the data in the EEPROM I ADD OOH E DATA 01 I E Indicates the editing mode After exiting the editing mode press the ON LINE switch to exit this mode The data in the EEPROM is as follows ADDRESS 00 DATA01H EEPROM ID 01 Standard Format ADDRESS 01 DATA xx CR Bi D in 120DPI L R ADDRESS 02 DATA xx L R ADDRESS 03 DATA xx 180DPI L R ADDRESS 04 DATA xx L R ADDRE...

Page 245: ...rge Finish 1 1 Japan 1 World 0 o 136 1 80 0 ADDRESS 14 DATA OOH reserved ADDRESS 15 DATA OOH reserved ADDRESS 16 DATA OOH reserved ADDRESS 17 DATA OOH reserved ADDRESS 18 DATA OOH reserved ADDRESS 19 DATA OOH reserved ADDRESS 1A DATA OOH reserved ADDRESS 1B DATA OOH reserved ADDRESS 1C DATA OOH reserved ADDRESS 1D DATA OOH reserved ADDRESS 1E DATA OOH reserved ADDRESS 1F DATA OOH reserved ADDRESS ...

Page 246: ...REV A ...

Page 247: ...6 2 Figure 6 2 Lubrication Points Diagram 1 6 2 Figure 6 3 Lubrication Points Diagram 2 6 3 Figure 6 4 Lubrication Points Diagram 3 6 4 Figure 6 5 Lubrication Points Diagram 4 6 6 Figure 6 6 Adhesive Points Diagram 6 7 LIST OF TABLES Table 6 1 Lubricants and Adhesive 6 1 Table 6 1 Lubrication Points 6 1 Table 6 2 Adhesive Application Points 6 2 6 j REV A ...

Page 248: ......

Page 249: ...ICATION EPSON recommends lubrication at the points illustrated in Figure 6 2 through 6 5 Table 6 2 provides a list of these points and the recommended lubricant to be used for each The lubricants EPSON 0 2 and EPSON G 14 have all been thoroughly tested and fUlly meet the needs of this printer Table 6 1 lists details of these lubricants 8efore applying any lubricant make sure that the part to be lu...

Page 250: ...f the self aligning bearing of the G 14 6 3 paper feed lever four points 1 1 Platen unit and paper guide plate set stopper two points G 14 6 2 12 1 4 perimeter of platen gear 1 4 center gear G 14 6 2 13 Paper feed transmission gear shaft G 14 6 2 1 3 of the way from the end 14 1 4 perimeter of paper feed G 14 6 2 1 5 1 4 perimeter of tractor transmission gear G 14 6 2 16 1 4 gear perimeter of top ...

Page 251: ...4 Cleaner drive gear and cleaner transmission gear G 14 6 5 Cleaner planetary gear and cleaner transmission gear Cleaner driven gear of cleaner set and cleaner transmission gear 25 Pin follower of pump set two points G 14 6 5 26 Bellows set shaft of pump set two points G 14 6 5 27 Contact portion of the gear and disc spring of the cleaner G 14 6 5 planetary gear set Total four points 6 3 ...

Page 252: ...for CSF sensor screw head 1 4 Lock screw SCP P M3X6 M3X 12 for head unit 2 5 Top edge sensor holder shaft center holder cutout 1 6 Lock screw CS M3X 14 for cable clip contacted to CN8 1 7 Set screw CS M2X 10 for trigger solenoid release sensor 1 8 Set screw CS M3X 12 for carriage belt holder 1 9 Set screw CS M3X5 for pump set 2 10 Set screw CS M2X6 for pump lid 4 1 1 Lock screws CBS M3X6 for Land ...

Page 253: ...REV A Figure 6 2 Lubrication Points O lagram 1 6 5 ...

Page 254: ...REV A 10 Figure 6 3 Lubrication Points Diagram 2 21 4 21 Lf 19 Figure 6 4 Lubrication Points Diagram 3 Figure 6 5 Lubrication Points Diagram 4 6 6 ...

Page 255: ...REV A F Igure 6 6 Adh eSlve P omts 0 lagram 6 7 ...

Page 256: ......

Page 257: ...HD64180 Block Diagram A 3 Figure A 3 OP Code Fetch Timing A 5 Figure A 4 Memory Data Read Write Timing A 5 Figure A 5 E05A09BA Pin Diagram A 6 Figure A 6 E05A09BA Block Diagram A 6 Figure A 7 E05A21AA Memory Map A 7 Figure A 8 E05A21 AA Pin Diagram A 9 Figure A 9 E05A22EA Pin Diagram A 11 Figure A 10 E05A24GA Pin Diagram A 14 Figure A 11 E05A24GA Block Diagram A 14 Figure A 12 E05A23GC Pin Diagram...

Page 258: ... SQ 850 Exploded Diagram A 34 Figure A 31 SO 2550 Exploded Diagram A 35 Figure A 32 Model 4410 Printer Mechanism Exploded Diagram A 36 Figure A 33 Model 4460 Printer Mechanism Exploded Diagram A 37 Figure A 34 SQ 850 External Dimension Diagram A 39 Figure A 35 SO 2550 External Dimension Diagram A 40 LIST OF TABLES Table A 1 SEIMA Board Primary ICs A 1 Table A 2 HD64180 Terminal Functions A 4 Table...

Page 259: ...ption 10C HD64180R1P10 CPU 2A E05A09BA MCU 8B E05A21AA MMU 6B E05A22EA PHC 12C E05A24GA PIF 4B E05A23GC DCU 1D SLA4390 HIC 3B SLA7020M HIC 5C 6C 7C LZ1008AD FET array 3C TL494CN PWM controler 2D L5431 AA Adjustable presision shant regurator BT1 CR 17335SE FT1 Litium battery 13E MN6275A C MOS 13D HD74HC292P C MOS 11 C 74LSOO TTL 11 D 74LS32 TTL 9A SN75188N Quad line transmitter 8A SN75189N Quad lin...

Page 260: ...ng memory mapped I O ASCI 2 channels Start stop asynchronous system full duplex SCI modem control signals CS I O port 1 channel Serial to parallel conversion shift register 16 bit timer 2 channels Pulse output function Interrupts Internal 4 external 8 Bus I F 80 CPU line bus I F Dynamic RAM refresh controller Programmable refresh interval Low speed memory input output I F Programmable number of we...

Page 261: ...ENDl Programmable DMACs TOUT Reload Timers 2 2 I 0 I 2 m m l CO l CO m m t il I TXAo TXS I a Clocked 0 0 I 0 J CKAoIDREQo CTS1 Serial I O Port Asynchronous RXAo CKS I SCI channel 0 RTSo Ioo CTSo Ioo DCDo I TXAl MMU Asynchronous Ioo CKA1 TENDo V SCI channel 1 I RXA1 I I V I l Address Data Buffer Buffer Vcc U 0 Vss RXS Ala Figure A 2 HD64180 Block Diagram A 3 ...

Page 262: ... up 60 E 0 Enable synchronous clock 6 BUSREO I Pulled up 5 BUSACK 0 Pulled up 58 HALT 0 Pulled up 61 L1R 0 Pulled up 12 ST 0 Pulled up 57 REF 0 Refresh signal Pulled down 8 NMI I 9 INTO I Pulled up 10 INn I Pulled up Interrupt 2 1 1 INT2 I 47 DREOO I Data request signal 54 DRE01 I Pulled up 55 TEND1 0 Pulled up 45 TXAO 0 Pulled up 46 RXAO I Pulled up 42 RTSO 0 SCI channel 0 RTS 43 CTSO I SCI chann...

Page 263: ...ory Data Read Write Timing The memory data access timing is different from the OP code fetch timing in the following points The L1R signal does not go active Read data is valid a half clock later as comparing with the OP code fetch timing The data is fetched at the trailing clock of state T3 For memory data write timing the ME signal and WR signal are activated at the latter half of state n and th...

Page 264: ... 002 AD 2 10 15 CO 2 AD 3 11 4 802 Vss 12 13 A02 Figure A 5 E05A09BA Pin Diagram 09 1 _ AO I 1 80 1 CO 1 DO I POT 0 1 POT 1 1 POT 2 1 1 POT 3 09 09 04 O l 06 07 08 MODE SELECTOR 00 01020304 O l 06 0708 09 OA MOTOR 2 AO 2 7 o PHA tLSESI IGATEI I 802 GENERATOR C02 EN 1 1 DO 2 MOTOR I I o j PHASE PULSES GENERATOR OA 03 OA 01 I L ADDRESS DECODER I I i ii 2 o CS AD3 AD2 AD ADO SCK RCK R ST Figure A 6 E...

Page 265: ...e 18 RCK 19 SCK I Write pulse 0 Motor reference voltage 4 POTO 0 OFF ON 0 Motor reference voltage 5 POTl 1 OFF ON 0 Motor reference voltage 1 POT2 2 OFF ON 0 Motor reference voltage 17 POT3 3 OFF ON 7 AOl 0 Motor coil A 6 801 0 Motor coil 8 3 COl 0 Motor coil C 2 DOl 0 Motor coil D 13 A02 0 Motor coil A 14 802 0 Motor coil 8 15 CO2 0 Motor coil C 16 D02 0 Motor coil D I Reset signal 22 RST 23 CS I...

Page 266: ... PROM external PROM Reset signal generator power on reset cartridge mount dismount ON LINE SW state reading 7FFFF 7FDOO 60000 BANK 40000 20000 10000 00000 MMIO RAM OOH 3FH 40H 1FH 80H BFH COH CFH DOH DFH EOH EFH FOH FFH CGO CGl KCG KCGO CAO CAl RAM 256KB 256KB 256KB 256KB 256KB 256KB 256KB X X X X X X X 64 64 64 16 16 16 16 EXTERNAL PROGRAM INTERNAL PROGRAM l28K 256K 64K 64K Figure A 7 E05A21AA Me...

Page 267: ... GND 25 AD7 26 AD6 27 AD5 28 AD4 29 AD3 30 AD2 31 AD1 32 ADO E05A21AA 64 MMIO 04 63 MMIO 03 62 MMIO 02 61 MMIO 01 60 MMIO 00 59 PROE 58 PRO 57 VDD 5V 56 RAM 55 CSBFO 54 CSBEO 53 CSBDO 52 CSBCO 51 CSB40 50 CSBOO 49 BNK80 48 BANK 47 BANK5 46 BANK4 45 BANK3 44 BANK2 43 BANK 1 42 BANKO 41 A7 40 VDD 5V 39 A6 38 A5 37 A4 36 A3 35 A2 34 Al 33 AO REV A Figure A S E05A21 AA Pin Diagram A 9 ...

Page 268: ...D GND 25 32 AD7 ADO I O Multiplexed lower address bus 7 0 data bus 7 0 33 39 AO A6 I O Address bus 0 6 40 VDD 5V Power sourse 41 A7 I O Address bus 7 42 47 BO B5 0 Bank change signal 0 5 48 BANK 0 Bank signal for external CG board 49 BNK80 0 Bank signal for external CG board KCG area 50 CSBOO 0 Decoded Chip Select signal CGO area 51 CSB40 0 Decoded Chip Select signal CG 1 area 52 CSBCO 0 Decoded C...

Page 269: ...A control Equipped general purpose I O port Push pull open drain FET head nozzle drive port 1 CHGB 2 CHGA 3 A3 4 A2 5 A 1 6 AO 7 TEST 8 RSET 9 VSS 10 D7 11 D6 12 D5 13 D4 14 D3 15 D2 16 D1 17 DO 18 VSS GND 19 H12 20 H 11 21 H10 22 H9 23 H8 24 H7 25 H6 26 H5 27 VSS GND 28 H4 29 H3 30 H2 31 Hl 32 VDD 5V E05A22EA 64 VDD 5V 63 P7 62 P6 61 P5 60 VSS GND 59 P4 58 H24 57 H23 56 H22 55 H21 54 H20 53 H19 5...

Page 270: ...0 Head data output 5th nozzle 27 VSS GND GND 28 H 4 0 Head data output 4th nozzle 29 H 3 0 Head data output 3rd nozzle 30 H 2 0 Head data output 2nd nozzle 31 H 1 0 Head data output 1st nozzle 32 VDD 5V Power sourse 33 35 PO P2 I O Multi purpose I O TTL level 36 VSS GND GND 37 P3 I O Multi purpose I O TTL level 38 H 13 0 Head data output 13th nozzle 39 H 14 0 Head data output 14th nozzle 40 H 15 0...

Page 271: ...ozzle 54 H2O 0 Head data output 20th nozzle 55 H21 0 Head data output 21th nozzle 56 H22 0 Head data output 22th nozzle 57 H23 0 Head data output 23th nozzle 58 H24 0 Head data output 24th nozzle 59 P4 I O Multi purpose I O TTL level 60 VSS GND GND 61 63 P5 P7 I O Multi purpose I O TTL level 64 VDD 5V Power sourse A 13 ...

Page 272: ...ND N G 18 47 GlK SlGT 19 46 TESTEN IBF 20 45 SOUT RDY 21 44 WDOG N G 22 43 WR BUSY 23 42 RD AGK 24 41 GE N G 25 40 A2 ERROR 26 39 Vcc N G 27 38 Al PE 28 37 AO GND 29 36 SlGTIN P20 30 35 PIS P21 31 34 GND P22 32 33 P23 Figure A 10 E05A24GA Pin Diagram DIN7 0 STB ACK BUSY PE ERROR SlCT INIT AFXT SUN PIS IBF ITO lOUT RDY Vcc GND Serial IIF General I O Port Parallel IIF Watch Dog Timer System System B...

Page 273: ...ENB Pulled down 13 29 GND Ground 34 48 58 64 63 P14 0 Multi purpose I O 30 P20 0 Multi purpose I O 31 P21 0 Multi purpose I O 32 P22 0 Multi purpose I O 33 P23 0 Multi purpose I O 16 TM I Not used open 61 I P12 0 Multi purpose I O 60 P11 0 Multi purpose I O 59 PlO 0 Multi purpose I O 62 P13 0 OULLt 1 21 READY 0 READY lED 20 IBF 0 BUSY latch signal 15 ITO 0 INIT latch signal 47 ClK I Watch dog time...

Page 274: ...REV A Table A G E02A24GA Terminal Functions Pin No Name I O Function 27 22 NC 0 Not used 25 18 14 lOUT Not used 41 CS I Chip select signal 17 RST I Reset signal 45 SOUT 0 Output Serial data A 16 ...

Page 275: ...ng fuction REV A 1 R1 2 VCOIN 3 R2 4 CS 5 CA 6 VCOOUT 7 AVCC 5V 8 AGNO GNO 9 TRIG 10 CTRL 11 N C 12 THR 13 DISC 14 lOUT 15 POUT 16 MINUS 17 PLUS 18 AVCC 5V 19 GNO 20 ENCA 21 ENCB 22 HOME 23 XOUT 24 XIN 25 AO 26 A 1 27 A2 28 CE 29 OE 30 WE 31 VCC 5V 32 PNP 1 E05A23GC 64 POUT 63 AGNO GNO 62 PCA 61 PCS 60 INH 59 VCC 5V 58 TSTV 57 RST 56 VCC 5V 55 PTS 54 CPMP 53 STOP 52 TEST 51 RISE 50 TSTO 49 GNO 48 ...

Page 276: ...tage comperater output 16 MINUS I Comperater input 17 PLUS I Comperater input 18 AVcc Analog power sourse 19 GND GND 20 ENC A I Encoder signal input CMOS schmitt trigger 21 ENC B 22 HOME I Home position siganal input 23 XOUT 0 External x tal terminal 24 XIN I 25 27 AO A2 I Address decoder input CE I Chip enable signal 28 29 OE I Output enable signal 30 WE I Write enable signal 31 Vcc 5V Power sour...

Page 277: ...nal output for timer CTRL 0 Print Timing Signal generator output 55 PTS 56 Vcc 5V Power sourse Reset signal input Low all counter register initialized 57 RST I I Clock input for VCO output simulation N U 58 TSTV 59 Vcc 5V Power sourse 60 INH I VCO outout initialize signal 61 PCB I Internal phase comperater test signal input N U 62 PCA I Phase comperater test signal input N U 63 AGND Analog GND 64 ...

Page 278: ...s darlington transistor array Pln1 SK JAPAN I I I I H H H H H H H H I i I H I 12 Figure A 13 SLA4390 Case Outline Drawing 2 6 4 9 11 I I Rl Z 5KnTyp I RZ ZOOnTyp I UVI rvIr J R3 3KnTyp R4 IOOnTyp 7 Figure A 14 SLA4390 Functional Equivalent Circuit A 20 ...

Page 279: ...or driver for unipolar constant current driving lJllf JlllJl llJlfJllf IllfJllfll I 2 3 4 S 6 7 8 9 10 11 12 13 14 15 Figure A 15 SLA7020M Case Outline Drawing Vcc Db 1 C2 Cl a Do u J I L_ _L _ _ _ 2 J L ____t _ 6 J Figure A 16 SLA7020M Functional Equivalent Circuit A 21 ...

Page 280: ...dth modulation control The block diagram is shown in Figure A 17 shows r 13 Output Control Vcc Ref out GND RT CT Dead Time Conrol Non Iny Input 1 1 Iny Input Non Inv Input Iny Input Feedback Low Voltage Stop Figure A 17 TL494 Block Diagram A 22 ...

Page 281: ...hat it is capable of replacing various Zener diodes The 431 is especially suitable for driving the photodiode in the photocoupler section of the feedback circuit used in the RCC system switching regulator Temperature compensated reference voltage 50 ppm C TYP High response speed Low noise CATHODE ANODE REF REF NC A NC Figure A 18 L5431 AA Pin Diagram CATHODElll 8IREFERENCE Vref L oCathode L _ _ An...

Page 282: ...driving pulse outputs for a 1 Hz stepper motor The device is also provided with a 4096 Hz intermittent alarm output and has a voltage stabilizer ALO __ 1 1 01 2 7 02 3MN6275A6 XI 4 5 All 00 Vss XO Figure A 20 MN6275AS Pin Assignment XO 3 Stage r J Mr 4 r l Div ider r m All r IN1nput Circuit TEST 13 Stage 1 1 Divider Figure A 21 MN6275AS Block Diagram A 24 ...

Page 283: ...e frequency divider digital timer Table A S HD74HC292P Function Table Clear Clock1 Clock2 Q Output Mode L X X Clear to L H S L Count H L S Count H H X Inhibit H X H Inhibit CLR C_Do o eLK 1 CLKZ Figure A 22 HD74HC292 Block Diagram A 25 rp rpz rp REV A ...

Page 284: ...PSE Board Table A 9 shows the primary ICs used on the SEIPS SANPSE board Table A 9 SEIPS SANPSE Board Primary ICs Location Name Description IC 1 L5431 AA Adjustable presision shant regurator IC20 TL494CN PWM controler A 26 ...

Page 285: ...Figures A 23 to A 35 are provided as additional reference 1 T I O ll N b I co 32 J7 J6 SEl PS BOARDCMl XT8 M L 2 o J IJ 1 j i 1 r T uuuuu 1 I g I _ L JI 1 1 0 11 2 UNIT 2 E II T J e J Y567202 X OOO I L _ _ 8N N C28 __ _ t i Cl J J J J Figure A 23 SEIPS Board Component Layout A 27 ...

Page 286: ...36 11 I R 37 100 001 R19 lK j T 43K R3S 10 K iiO nF j R22 R1J 390 390 4 t 1 3 ZDlO Hl 1 Z D2 2 v HZ to l 1 1 VL Z021 HZ C l PC T1 G PT P69ATD v 01 ERB4t 06 l C 8 RS 0 56 U 22000F i 2W V 200V R 7 300JJF 3aQK 1 l nB44 06 C3831 RI R4 L 390 062 01 CD lw D 04 ERA OO4 Fi vr CID R G 1 7 sw O OljJF N sov OS ERA B2 004 01 R8 03 C3746 1 A1020 2200PFlI2 60 1 R9 RID cm lDD 1K 0 C9 22fJF Cl ISV o 22 lF Rll 250...

Page 287: ... 011 I IV 1 _ Ra Rla T UNIT fiI Y56720400000 L fit n S g Z Ill C I 3 REV A Figure A 25 SANPSE Board Component Layout A 29 ...

Page 288: ...R37 2K L R 35 10K r V I Rn R23 3 0 3 0 l 2 2020 t I H 3 J H 2_1 I l021 H2 1 l C_ T1 PT P68ENF 0 E RB41 10 Le RBV4Q6 R5 0 RI4 lOOK LJ4700 P F 30QK 2W IKV 40g Z SO JF R7 02 300K L ERB44 10 C3460 R2 R4 ri RI5 13 CD 390K 390K 2W 03 04 ER 2 OO4 v HTr CID R3 CB 470DpF1l2 120 2W O OljJF N N 05 02 EAAB2 X 4 Re A 62n cm6 1 620 L R RlO 200 2K f C 22lJ F Cl 25 250V O 47 JF Rll 360 RO ZOI 2 1 _2SA l5431 Cl 4 ...

Page 289: ...371RS 8 VDD i330 P 16 01 0 0 01 5 0 01 02 14 VSS l 03 DIN 04 11 L 1 LD 05 12 02 ON LINE 11 06 SW5 5V 07 10 CLK 08 7 LED3 220 X 4 v h LED4 jMA165 09 6 lOOK lOOK 010 5 LED5 MAI65 LED6 1 5V 17 RST 011 4 012 3 9 4 7fJF 16V I 2 2fJF 16V z O lIJF 0 10 T7 NMC9306 ER59256 5V 3 DI CS f 1 10K 7 LS04 2 ClF 3 3K I 10K X7 6 f5V 220p DOTEST J 10K Trr Vo lifc I r _ If 11 r I r s SW3 SW4 SW6 SW7 J SWl SW2 5V 74HC...

Page 290: ...REV A rw i C3 CO2 c C 1 1 Cl T T n J 4 11M nll HO ICNlI IO g n T I Ill OM I I I CN2 w Figure A 28 SEIMA Board Component Layout A 32 ...

Page 291: ... oo NC K Bll l JI2 CIk CNIS r I 1 2 145 611 i CSA4 00M Gm C56 0 I T I I n AI I C7 11 CM 15S166 5 0 RI 040 I TIT I AI Ne 4700P 06 CR Motorl f 11 R RI97 rcf8 R213 i CR2 I I _ loO 1481 GH j RKI4 RKI4 0708 Of I 1 rlTl L eATl J043 I R20533K 041 680 I R9 1J l I I i OS310 550104M_2 I ll lIE NPH2 37 00 4 2 4 RKI4 2 1 5 1 1015 _ V a11 65 H074H 66 MA 165 IK 1 1t 2 l FL4 ir MINUS 16 4 1 __ 1I0 SLA i3 O iir C...

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Page 296: ... 354 CP M3X6 548 Sub Cap Spring 355 Cup M3X8 549 Cap Spring 356 Insulation Spacer 550 Pump Tension Gear 400 Power Cable 551 Pump Driving Gear 401 Power Cable 552 Tube Set Screw 402 Power Cable 550 Pump Transmission Gear 403 Power Cable 551 Pump Driving Gear 404 Cable Set 8DW 552 Tube Set Screw 405 Cable Set 8EY 553 o Ring 450 SEIPNL W PANEL 554 Cartridge Holder Unit 500 Printer Mechanism 555 Ink E...

Page 297: ...REV A r J J 1 1 1 _ 1 F E I c I f I l r hJ 0 1 1 I m I I I I Oqg 1 i bO 2 j4 i I l E 1 1 I JI d h i 0 i i u I J 1 L l ih J IL Jr 80 6 1 176 Figure A 34 80 850 External Dimension Diagram A 39 ...

Page 298: ...REV A I r _ _ GG4 542 f 1 0 l 111 L L t 1ll1 L T I 0 C 31 i I Ln NI _ Cl Cl I I t I D I 80 6 I 176 I r ____30 413 _ _ _ i _ _ _ _ I Figure A 35 80 2550 External Dimension Diagram A 40 ...

Page 299: ...raghi 427 20099 SESTO S GIOVANNI MI ITALY Phone 2 26233 1 Fax 2 2440750 SEIKO EPSON CORPORATION Hirooka Office 80 Harashinden Hirooka Shiojiri shi Nagano ken 399 07 Japan Phone 0263 52 2552 Telex 3342 214 SEPSON J EPSON DEUTSCHLAND GmbH ZUlpicher StraBe 6 4000 OUsseldorf 11 F R Germany Phone 0211 56030 Fax 211 504 7787 EPSON FRANCE S A 68 bis rue Marjolin 92300 Levallois Perret France Phone 1 47 3...

Page 300: ...EPSON Printed in Japan 90 11 15 G ...

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