Epson LX-1170 Service Manual Download

Page: 59 / 129

LX-300+/1170

Revision C

Operating Principles

Electrical Circuit Operating Principles

NOTE: *: Core voltage of CPU and G/A is 3.3V and it is generated by the

regulator IC on the MAIN board form +5VDC.

Table 2-16. Output Voltage and its Use

Output voltage

Use

35 V +5%/ -10%

Drive

5 V ± 5%

Logic Voltage*

Summary of Contents for LX-1170

Page 1: ...EPSONLX 300 1170 9 pin Serial Impact Dot Matrix Printer SEDM997003 SERVICE MANUAL LX 300 LX 1170 ...

Page 2: ...All effort 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 o The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof EPSON is a registered trademark of SEIKO EPSON CORPORATION General Notice Other pr...

Page 3: ...E MUST BE CONNECTED USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS 4 WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT MAKE SURE TO WEAR GLOVES TO AVOID INJURIER FROM METAL PARTS WITH SHARP EDGES WARNING 1 REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN 2 MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE LISTED...

Page 4: ...he following additional information for reference Connector pin assignments Electric circuit boards components layout Electrical circuit boards schematics Exploded diagram Parts List Symbols Used in this Manual Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action Be aware o...

Page 5: ...ease B April 5 2001 Revision Page 70 Warning and caution messages added Page 107 EEPROM Address Map added Page 111 Component Layout added Page 124 C294MAIN B Board added C April 19 2001 Revision Page 117 LX 1170 Exploded Diagrams added Page 121 Parts list for LX 1170 added ...

Page 6: ...i d Adjustment 29 1 4 3 Errors 30 1 5 Control codes 31 1 5 1 ESC P2 31 1 5 2 IBM 2390 Plus Emulation 32 1 5 3 Bi Directional Commands 33 1 5 3 1 Reply Printer Status 35 1 5 3 2 Packet commands 36 1 6 Initialization 37 1 7 Paper Specifications 38 1 8 Physical Specifications 41 1 8 1 Physical Specifications for LX 300 41 1 8 2 Physical Specifications for LX 1170 42 1 9 Accessories 43 Chapter 2 Opera...

Page 7: ...embly Removal 78 4 2 6 C294 Power Supply Board Assembly Removal 79 4 2 7 Printer Mechanism Disassembly 80 4 2 7 1 CR Motor Assembly Removal 81 4 2 7 2 Platen Removal 81 4 2 7 3 Carriage Unit Removal 82 4 2 7 4 Ribbon Feed Mechanism Removal 84 4 2 7 5 RPE Sensor Removal 84 4 2 7 6 BPE Sensor Removal 84 4 2 7 7 HP Sensor Removal 85 4 2 7 8 PG Sensor Removal 85 4 2 7 9 Release Lever Position Sensor R...

Page 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...

Page 9: ...es Standard version 13 tables NLSP version 38 tables o Input buffer 8 Kbytes o Acoustic noise LX 300 1170 49 dB A ISO 7779 pattern LX 1170 55 dB A ISO 7779 pattern for India o Reliability Total print volume 12 million lines except printhead MTBF 6000 POH 25 Duty Printhead life LX 300 400 million strokes wire Black 100 million strokes wire Color LX 1170 400 million strokes wire Ribbon life 3 millio...

Page 10: ...0 160 LX 300 272 LX 1170 300 Draft 10 80 LX 300 136 LX 1170 225 12 96 LX 300 163 LX 1170 270 15 120 LX 300 204 LX 1170 225 Draft condensed 17 137 LX 300 233 LX 1170 191 20 160 LX 300 273 LX 1170 225 Draft emphasized 10 80 LX 300 136 LX 300 112 NLQ 10 80 LX 300 136 LX 1170 56 12 96 LX 300 163 LX 1170 67 15 120 LX 300 204 LX 1170 56 17 137 LX 300 233 LX 1170 47 20 160 LX 300 272 LX 1170 56 NOTE When...

Page 11: ...CATIONS 11 o Control code ESC P and IBM 2380 Plus emulation Refer to 1 5 Control codes NLQ 240 144 No Bit image 60 72 80 90 or 120 72 Yes 120 or 240 72 No Table 1 2 Resolution Printing mode Horizontal density dpi Vertical density dpi Adjacent dot print ...

Page 12: ...c PC APTEC Arabic PC708 Arabic PC 720 Arabic PCAR864 Arabic PC863 Canadian French Abicomp BRASCII Roman 8 ISO Latin 1 Hebrew 7 1 Hebrew 8 1 PC862 Hebrew 1 PC858 IAO8859 15 PC771 Lithuania NOTE 1 This item is not displayed in a default setting mode Do not describe this in the manual o International character sets 13 countries U S A France Germany U K Denmark 1 Sweden Italy Spain 1 Japan Norway Denm...

Page 13: ... PC 865 Nordic BRASCIl Roman 8 PC437 Greek PC 855 Cyrillic PC 857 Turkish PC 869 Greek Code MJK CSFR lSO Latin 1T Turkish PC774 LST 1283 1993 1SO 8859 2 PC 866 UKR Ukrania PC 708 Arabic PCAR864 Arabic Hebrew 8 1 PC 858 PC771 Lithuania PC 850 Multilingual PC 861 Icelandic PC863 Canadian French Abicomp lSOLatin1 PC 853 Turkish PC 852 East Europe PC 866 Russian MAZOWIA Poland lSO 8859 7 Latin Greek B...

Page 14: ...r must be set at the proper position as shown below Table 1 4 Release Lever Lever position Paper path Feeder Paper Media Friction Manual insertion rear Cut sheet Single sheet and Multi part Envelop CSF single bin Cut sheet Single sheet Roll paper holder feed rear Roll paper Tractor Push tractor feed rear Continuous paper Single sheet and Multi part Push and Pull tractor feed rear Continuous paper ...

Page 15: ... 0 39 up to 0 52 0 0102 0 0130 over 0 26 up to 0 33 5 0 0130 0 0154 over 0 33 up to 0 39 6 0 0154 0 0205 over 0 39 up to 0 52 Table 1 5 Paper Thickness Lever LX 300 LX 1170 Lever position Paper thickness inch Paper thickness mm Paper thickness inch Paper thickness mm Min Max Min Max ...

Page 16: ...lectric strength AC 1500 Vrms 1 min between AC line and chassis 1 2 4 Environmental Condition o Temperature 5 to 35 C operating 1 15 to 25 C operating 1 2 30 to 60 C non operating o Humidity 10 to 80 RH operating 1 30 to 60 RH operating 1 2 0 to 85 RH non operating 1 o Resistance to shock 1 G within 1ms operating 2 G within 2ms non operating 3 o Resistance to vibration 0 25 G 10 to 55 Hz operating...

Page 17: ... version n Safety standards UL1950 CSA C22 2 No 950 n EMI FCC part15 subpart B class B CSA C108 8 class B o 230 V version n Safety standards EN60950 n EMI EN55022 CISPR pub 22 class B AS NZS 3548 class B 1 2 8 CE Marking 230 V UPS version n Low voltage directive 73 23 EEC EN60950 n EMC Directive 89 336 EEC EN55022 class B EN61000 3 2 EN61000 3 3 LX 300 only EN50082 1 IEC801 2 IEC801 3 IEC801 4 LX ...

Page 18: ... or more PW 229 mm 24mm or more PW 257 mm LX 1170 3 mm or more PW 364 mm 29mm or more PW 420 mm LX 300 3 mm or more PW 229 mm 24mm or more PW 257 mm LX 1170 3 mm or more PW 364 mm 29mm or more PW 420 mm RM Right Margin LX 300 3 mm or more PW 229 mm 24mm or more PW 257 mm LX 1170 3 mm or more PW 364 mm 29mm or more PW 420 mm LX 300 3 mm or more PW 229 mm 24mm or more PW 257 mm LX 1170 3 mm or more ...

Page 19: ...m or more RM Right Margin 3 mm or more TM Top Margin 4 2 mm or more BM Bottom Margin 4 2 mm or more NOTE The maximum horizontal printable area is 203 2mm P r i n t a b l e A r e a L M T M R M B M Table 1 8 Printable Area for Continuous Paper Continuous Paper PW Width Refer to 1 7 Paper Specifications PL Length Refer to 1 7 Paper Specifications LM Left Margin LX 300 13 mm or more PW 254 mm 24mm or ...

Page 20: ...OTE The maximum horizontal printable area is 203 2mm for LX 300 345 44 for LX 1170 Table 1 8 Printable Area for Continuous Paper Continuous Paper Table 1 9 Printable Area for Roll Paper Continuous Paper PW Width Refer to 1 7 Paper Specifications PL Length Refer to 1 7 Paper Specifications LM Left Margin 3 mm or more RM Right Margin 3 mm or more TM Top Margin 4 2 mm or more BM Bottom Margin 4 2 mm ...

Page 21: ...el 1 device Figure 1 6 Data Transmitting Timing Table 1 10 Parameter Parameter Minimum Maximum Condition VOH 5 5V VOL 0 5V IOH 0 32mA VOH 2 4V IOL 12mA VOL 2 4V CO 50pF VIH 2 0V VIL 0 8V IIH 0 32mA VIH 2 0V IIL 12mA VIL 0 8V CI 50pF NOTE Logic H signal is 2 0V or lower when the printer is off and the signal is 3 0V or higher when the printer is on The receiver has impedance which is equivalent to ...

Page 22: ...e pulse Input data is latched at falling edge of the signal 2 DATA1 20 In Parallel input data to the printer bit0 LSB 3 DATA2 21 In bit1 4 DATA3 22 In bit2 5 DATA4 23 In bit3 6 DATA5 24 In bit4 7 DATA6 25 In bit5 8 DATA7 26 In bit6 9 DATA8 27 In bit7 MSB 10 ACKNLG 28 Out This signal negative pulse indicates that the printer has received data and is ready to accept next one 11 BUSY 29 Out This sign...

Page 23: ...ON SP LX 1170 LX 300 LX 1170 00H 4BH MFG EPSON CMD ESCPL2 PRPXL24 BDC MDL LX 300 CLS PRINTER DES EPSON SP LX 1170 00H 4BH MFG EPSON CMD ESCP9 PRPII9 BDC MDL LX 1170 CLS PRINTER DES EPSON SP LX 1170 LX 300 LX 1170 Table 1 13 Connector Pin Assignment and Signals Reverse Channel Pin No Signal Name Return GND Pin In Out Functional Description 1 HostClk 19 In Host clock signal 2 DATA1 20 In Parallel in...

Page 24: ...ed when the rest of the input buffer is regained 256 byte o Error handling Parity error is only detected Overrun error and framing error are ignored o Connector 25 pin subminiature D shell connector female In Out shows the direction of signal flow from the printer s point of view 17 Chassis Chassis GND 16 33 19 30 GND Signal GND 15 34 NC Not connected Table 1 13 Connector Pin Assignment and Signal...

Page 25: ...e is not selected 1 3 5 Prevention Hosts from Data Transfer Time out Generally hosts abandons data transfer to peripherals when a peripheral is in busy state for dozens of seconds continuously To prevent hosts from this kind of time out the printer receives data very slowly several bytes per minute even if the printer is in busy state This slowdown is started when the rest of the input buffer beco...

Page 26: ...ction Pause Alternates printing and non printing status Enables Micro Adjustment function and Font selection holding it down for 3 seconds Load Eject Loads or ejects paper Execute micro feed forward when this function is enabled LF FF Executes line feed by pressing it shortly Executes form feed by holding it down for a few seconds Executes micro feed backward when this function is enabled Tear Off...

Page 27: ...in the Tear off position n Draft n Draft Condensed n Roman Roman Condensed Sans serif n Sans serif Condensed Tear Off LED On n LED Off LED Blinks 1 4 1 3 Buzzer o Paper out error Beeper sounds o Release lever operation Beeper sounds o Illegal panel operation Beeper sounds The description and in the above shows how the beeper sounds Beeper sounds approx 100ms and interval is approx 100ms Beeper sou...

Page 28: ...pause and turn off the power o Default setting Starts the default setting mode See 1 4 2 3 Default Setting o Data Dump Starts the data dump mode in which all the input data are printed as hexadecimal numbers and corresponding characters o Clear EEPROM Resets the printer to the factory default setting which is not always proper setting for each market demand i e This function is for emergency Clear...

Page 29: ... tractor 3 inch 3 5 inch 4 inch 5 5 inch 6 inch 7 inch 8 inch 8 5 inch 11 inch 70 6 inch 12 inch 14 inch 17 inch Skip over perforation OFF ON Auto tear off OFF ON Auto line feed OFF ON Print direction Bi d Uni d Auto Software ESC P2 IBM 2390 Plus 0 slash OFF ON High speed draft OFF ON I F mode Auto Parallel Option Auto I F wait time 10 seconds 30 seconds Baud rate 19200BPS 9600BPS 4800BPS 2400BPS ...

Page 30: ...ng adjustment is executed Bi d adjustment for high speed draft mode Bi d adjustment for draft mode Bi d adjustment for NLQ mode 5 Turn the printer off The setting is stored into non volatile memory 1 4 3 Errors o Paper out error When the printer fails to feed a sheet it goes a paper out error o Release lever error When release lever position is wrong it goes a release lever error o Fatal errors Ca...

Page 31: ...ntally ESC D HT Tab Vertically ESC B VT Advance paper ESC J Font selection Typeface ESC k ESC x ESC y Pitch ESC P ESC M ESC g ESC p Italic Font ESC 4 ESC 5 Bold Font ESC E ESC F Master Select ESC Font enhancement Double Width ESC W DC4 SO Condensed DC2 SI Double height ESC w Double Strike ESC G ESC H Super Subscript ESC T ESC S Underline ESC Spacing Intercharacter Space ESC Space Character handlin...

Page 32: ... ESC 4 Print position motion Horizontal Print Position ESC d Initialize Tab Position ESC R Tab Horizontally ESC D HT Tab Vertically ESC B VT Advance paper ESC J Font selection Pitch DC 2 ESC P ESC Bold Font ESC E ESC F Master Select ESC I Print Quality ESC d Select Font and Pitch ESC I Font enhancement Double Width DC4 SO ESC SO ESC W Enlarge and Life Space ESC Condensed SI ESC SI Double Strike ES...

Page 33: ...re saved No parameter is saved 1 Don t describe in manual 2 m1 0 to 1 only 3 Only the following parameters are memorized Table 1 23 EJL SP ID CR LF MFG EPSON CMD ESCPL2 PRPXL24 BDC MDL LX 300 CLS PRINTER DES EPSON SP LX 300 FF EJL SP ID CR LF MFG EPSON CMD ESCP9 PRPII9 BDC MDL LX 1170 CLS PRINTER DES EPSON SP LX 1170 FF LX 300 LX 1170 Table 1 22 Bi Directional Commands Function Code Parameter Save...

Page 34: ...H 00H PC862 22H 00H Hebrew 8 0DH 00H PC864 24H 00H PC 774 0EH 00H PC866 25H 00H Estonia 0EH 20H PC866 LAT 28H 00H PC APTEC 0EH 30H PC866 UKR 29H 00H PC 708 0FH 00H PC869 2AH 00H PC720 0DH 20H PCAR_864 7FH 02H ISO 8859 2 1BH 00H MAZOWIA 2DH 00H PC771 Table 1 26 Bi Directional Commands Function Code Parameter Save Set page length PG 05H 00H 00H p1 p2 m1 m2 p1 0 Continuous paper p2 0 Rear p1 1 CSF p2...

Page 35: ...sable Turn IBM emulation Auto CR on off EX 06H 00H 00H 00H 00H 00H 04H m1 m1 0 off 1 on Set starting data month year SD 04H 00H 00H m1 m2 m3 00 m1 99 01 m2 12 01 m3 31 Inquire printer state reply on off ST 01H 00H 01H BDC SP PS CR LF ST nn FF Echo parameters nL nH 01H chr str BDC SP PS CR LF chr str FF Inquire starting date month year SD 01H 00H 01H BDC SP PS CR LF SD nn1 nn2 nn3 FF Inquire total ...

Page 36: ...le 1 30 Characteristic Status Code location size type Refer to Structure version 0 2bytes 02 fixed Starting date 2 6bytes yy mm dd SD command Total printing line number 8 8bytes nnnnnnnn TL command Total power on hour 16 4bytes nnnn TL command Total printing number for ribbon charge timing 20 8bytes nnnnnnnn TL command Table 1 31 Packet Commands Function Code Device ID request di 01H 00H 01H Devic...

Page 37: ...ization o Operator initialization The initialization of this level is activated by INT signal negative pulse This initialization is n to clear the all buffers of data n to cancel the download character definition n to make the printer stand by state if no errors occur n to execute Software initialization o Software initialization The initialization of this level is activated by the control code ES...

Page 38: ...52 14 90 24 64 18 90 24 Quality Plain paper Reclaimed paper Not curled not folded not crumpled Plain paper Reclaimed paper Not curled not folded not crumpled NOTE Printing on reclaimed paper is available only under normal temperature and humidity conditions Minimum Maximum Width inch mm 3 9 100 10 1 257 Length inch mm 3 9 100 14 3 364 Copies 1 original 4 copies Total Thickness inch mm 0 0047 0 12 ...

Page 39: ...led not folded not crumpled NOTE Printing on reclaimed paper is available only under normal temperature and humidity conditions NOTE Set the longer side of envelope horizontally Rear Entry Bottom Entry Min Max Min Max Width inch mm 4 101 6 10 254 4 101 6 10 254 Length one page inch mm 4 101 6 22 558 8 4 101 6 22 558 8 Copies 1 original 4 copies 1 original 4 copies Total Thickness inch mm 0 0025 0 ...

Page 40: ...inch mm 0 0063 0 16 0 0075 0 19 Label weight g m2 lb 64 17 Quality AVERY CONTINUOUS FORM LABELS AVERY MINI LINE LABELS or the same quality labels NOTE Printing on labels is available only under normal temperature and humidity conditions NOTE The base sheet of labels must be continuous paper NOTE Continuous paper with labels should be inserted from the bottom entrance Minimum Maximum Width inch mm ...

Page 41: ...sical Specifications Without pull tractor n Dimensions 366 x 275 x 159 mm WxDxH n Mass Approx 4 4 kg n Appearance See the figure below Figure 1 9 Appearance Without Pull Tractor LX 300 o Physical Specifications CSF n Dimensions 366 x 441 x 370 mm WxDxH n Mass Approx 4 6 kg n Appearance See the figure below Figure 1 10 Appearance With CSF LX 300 ...

Page 42: ...l Specifications for World Wide Without pull tractor n Dimensions 366 x 275 x 159 mm WxDxH n Mass Approx 4 4 kg n Appearance See the figure below Figure 1 11 Appearance Without Pull Tractor LX 1170 o Physical Specifications CSF n Dimensions 366 x 441 x 370 mm WxDxH n Mass Approx 4 6 kg n Appearance See the figure below n ...

Page 43: ...d Items Description Ribbon cartridge Black For LX 300 8750 Ribbon cartridge Black For LX 1170 8755 Ribbon pack Black 8758 Ribbon cartridge Color Only available for LX 300 S015073 Table 1 40 Options Unit Description Cut sheet feeder For LX 300 For LX 1170 C80637 C80639 Pull tractor unit For LX 300 C80030 For LX 1170 C80034 Roll paper holder 8310 Color upgrade kit Only available for LX 300 C83208 Ep...

Page 44: ...C H A P T E R 2 OPERATINGPRINCIPLES ...

Page 45: ...ards Figure 2 1 Component Unit o Circuit board n Main control circuit C294MAIN LX 300 C294MAIN B Board LX 300 LX 1170 n Power C294PSB C294PSE Board n Panel C294PNL Board The following sections describe the operating principles of each unit Power Supply Board C294PSB PSE Main Board C294MAIN C294MAIN B Printer Mechanism Panel Board C294PNL ...

Page 46: ...laten gap adjustment mechanism Adjust lever Platen gap detector o Paper feed mechanism PF motor rear paper end RPE detector bottom paper end BPE detector o Release mechanism Release detector REL Figure 2 2 Printer Mechanism Block Diagram Rear paper end detector Bottom paper end detector Platen Tractor PF motor Ribbon Carriage Ribbon Mechanism Printhead Adjust lever Platen gap detector Carriage mot...

Page 47: ...guration Note The figure is seen from the back of the head facing printing side Direct current coil resistance 33 3 3 3 Ω 25 C Head drive method Rated voltage drive Head drive voltage 35 2 1 3 5 V Peak current Normal 0 75 A Standard Copy 0 85 A Standard 1 0 A Maximum Head drive frequency Normal 1350Hz or less Copy 1350Hz or less Head life Black ribbon 0 2 billion stroke wire or more Color ribbon 0...

Page 48: ...llel to the platen o HP detector Detects carriage home position CR MOTOR This printer uses stepping motor for CR motor Open loop control switches the phases according to the setting period and this mechanism enables the carriage to move until the appointed position The table below is the CR motor specifications Table 2 3 CR Motor Specifications Item Specification Motor type 2 phase 200 pole hybrid...

Page 49: ...700 Color 2 2 0 79 0 79 0 70 0 70 0 70 60 1350 High speed draft 15cpi Draft 10cpi Bit image 60 dpi F BW 2 2 0 70 0 59 0 59 0 59 0 59 Draft 12cpi D 2250 Color 2 2 0 79 0 79 0 70 0 70 0 70 1440 21 1286 High speed draft 17cpi BW 2 2 0 70 0 59 0 59 0 59 0 59 72 1350 Bit image 72 dpi E 1800 Color 2 2 0 79 0 79 0 70 0 70 0 70 80 1200 Bit image 80 dpi G x BW 1 2 0 65 0 65 0 59 0 59 0 59 90 1350 High spee...

Page 50: ...or ribbon up and down to change the color area of the ribbon to be printed Color ribbon mechanism consists of the color shift CS motor CS cam ribbon detector CS lever assembly and color cartridge holder Color ribbon is installed on the color cartridge holder When CS motor revolves 1 the pinion revolves CS cam 2 the CS lever assembly on the CS cam shifts the color cartridge holder up and down and 3...

Page 51: ...up the printing is done by the following order when printing green violet and orange Color ribbon drive circuit CS lever assembly Ribbon detector CS cam CS motor CS lever assembly Color ribbon Color cartridge holder CS motor pinion CS cam Black Cyan Magenta Yellow Table 2 7 Ribbon Detector Specifications Item Specification Method Mechanical contact method Switching rate 0 6 to 1 0 mA Switching mod...

Page 52: ...s the printhead o Carriage guide shaft Shifts the carriage horizontally o Adjust lever and Parallelism adjust bushing Installed at the both ends of the carriage guide shaft o Platen gap detector PG_SW Carriage guide shaft is eccentric toward the adjust lever rotating center Due to this when rotating the adjustment lever back and forth the printhead shifts toward and against the platen to adjust th...

Page 53: ...aper load n Push tractor Rear paper load top paper load n Pull tractor Rear Bottom paper load top paper load o Auto loading When loading paper manually push paper between the platen and the driven paper load roller Paper will be loaded automatically PF MOTOR LX 300 1170 uses a stepping motor for PF motor Open loop control switches the phases according to the setting period and this mechanism loads...

Page 54: ...n CSF is used page length measurement calculates the printable lines and if the paper is longer than the printable lines the number of printing line is considered the printable lines fixed value When paper is shorter than the printable lines the printer prints the fixed number of lines by forms over ride function which allows the fixed number of lines to be printed even when RPE detector detects p...

Page 55: ...e detector specifications 2 2 7 Other Special Functions 2 2 7 1 Energy saving mode This function saves electric consumption when the printer is in the standby mode This mode turns hold current of PF motor CR motor and CS motor OFF 2 2 7 2 Quiet Mode Quiet mode lowers printing temperature When this mode is selected carriage speed will be lowered to the power down mode speed Refer to Table 2 4 Carri...

Page 56: ...is installed in LX 300 for initial production and for later production the main board is switched to C294 MAIN B 2 in 1 As for LX 1170 C294 MAIN B is installed from initial production o C294 MAIN Board Block Diagram NOTE CS motor is only avilable for LX 300 Figure 2 7 C294 MAIN Board Block Diagram LX 300 Control Panel HP sensor RPE Sensor Release Sensor BPE Sensor PG Sensor ...

Page 57: ...LX 300 1170 Revision C Operating Principles Electrical Circuit Operating Principles 57 o C294 MAIN B Block Diagram Figure 2 8 C294 MAIN B Board Block Diagram LX 300 1170 ...

Page 58: ...pin Outside clock 19 66 MHz Inside clock 39 32 MHz 8KBRAM built in Various DMA A D converter Approximately 21000 gates QFP 160 pin Bit manipulation Clock control interface control IEEE1284 Type B I F Input Buffer control Motor control Head control PROM IC7 4M 8Mbit DIP 40 42 pin Stores firmware CG DRAM IC8 1 2 4M bit switching method SPJ package 40 pin Various buffer work area EEPROM IC5 AT93C46 1...

Page 59: ... Electrical Circuit Operating Principles 59 NOTE Core voltage of CPU and G A is 3 3V and it is generated by the regulator IC on the MAIN board form 5VDC Table 2 16 Output Voltage and its Use Output voltage Use 35 V 5 10 Drive 5 V 5 Logic Voltage ...

Page 60: ...C H A P T E R 3 TROUBLESHOOTING ...

Page 61: ...I N G n Never touch printhead and any motors right after printing since they are highly heated n When disassembling the printer be sure to disconnect the power cable and remove the interface cable C A U T I O N n Be sure to use specified tools for servicing to maintain the quality n Make sure to apply specified oil grease and glue n Perform adjustment as specified Troubleshooting Initialization Ch...

Page 62: ... reset to the factory default setting Refer to Chapter 1 3 2 2 Check Performance By Self Check Function LX 300 1170 has self check function and it supervises the printer condition constantly If any problem occurs it indicates error by indicator LED and in some cases it notifies error to the operator by beeping the buzzer Identify error cause referring to the indication first If error is not solved...

Page 63: ...t should be performed but if necessary parts level replacement should be performed Find your symptom in the table below and check the corresponding table Table 3 2 Symptoms and Solutions Symptom Problems Check Table When power is applied the printer does not operate Control panel LED does not operate at all Printer mechanism does not operate at all When power is applied the printer becomes fatal e...

Page 64: ...perly Main board is defective Replace the main board Printer mechanism is defective Replace the printer mechanism Table 3 5 When Power is Applied the Printer Becomes Fatal Error Cause Check Point Y N Solution CR motor harness is not connected properly Is CR motor harness CN10 connected properly NO Connect it properly CR motor is defective Replace the CR motor HP detector harness is not connected p...

Page 65: ...ism parts PF motor is defective Is PF motor normal NO Replace the PF motor PF motor driver is defective Replace the main board Table 3 8 Control Panel and Switches Do Not Operate Cause Check Point Y N Solution Switch is defective Is conductivity of the switch is OK NO Replace the control panel Connect the control panel harness Control panel harness is connected properly NO Connect it properly Cont...

Page 66: ... can check if it is all right Figure3 2 Head Coil Pin No W A R N I N G When repairing the unit make sure to turn the printer off and plug off the power cable except when this manual specifies to keep the power on Table 3 10 Printhead Coil Resistance Item Operation Specification Printhead 1 Set the multimeter to the resistance measuring range 2 Connect the one side of the probe to C 3 Connect the o...

Page 67: ...em Operation Specification HP detector 1 Set the multimeter to the resistance measuring range 2 Connect the one side of the probe to CN3 1 pin 3 Connect the other side of the probe to CN3 2 pin When switching the sensor actuator it should be switched ON OFF RPE detector 1 Set the multimeter to the resistance measuring range 2 Connect the one side of the probe to CN4 1 pin 3 Connect the other side ...

Page 68: ...e done by the following method Table 3 13 Printhead Driver Check Item Operation Specification Printer driver 1 Set the multimeter to the resistance measuring range 2 Connect the one side of the probe to the base of the transistor 3 Connect the one side of the probe to emitter of the transistor The resistance should NOT be 0 or infinity ...

Page 69: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...

Page 70: ...inter with power applied strictly follow the instructions in this manual n Always wear gloves for disassembly and reassembly to avoid iujury from sharp metal edges n To protect sensitive microprocessors and circuitry use static discharge equipment such as anti static wrist straps when accessing internal components C A U T I O N n Use only recommended tools for disassembling assembling or adjusting...

Page 71: ...C Disassembly and Assembly Overview 71 Table 4 3 List of Screws Screw Name Screw Name C B P Tite 3x10 F ZN C P Screw 3x4 F ZN C P B Screw 3x14 F ZN C B O Screw 4x8 F ZN C B S Screw 3x4 F Zn Jack Socket C B B W 13 3x14 F ZN ...

Page 72: ... is not oily OK NG Is the PF motor assembly at the correct temperature Not overheating OK NG Paper path Are all the types of paper fed smoothly OK NG Does the tractor feed paper smoothly OK NG Is the paper path clear of obstructions OK NG Is the platen free of damage OK NG Ribbon mask Is the ribbon mask free of distortion OK NG Test printing Is the test printing successful OK NG Online printing Is...

Page 73: ...d under Adjustment When you have to remove parts that are not described in this chapter refer to the exploded diagram on Appendix of this manual The figure below is the disassembly flowchart for main component Flowchart 4 1 Disassembly Flowchart Main Component C A U T I O N n Read 4 1 1 Precautions before start disassembling the printer n Remove ink ribbon and paper before disassembling the printe...

Page 74: ...d to the carriage assembly 3 Lift the printhead a little bit Unlatch 2 hooks securing the printhead FFC to carriage unit 4 Remove FFC from the printhead Figure4 1 Printhead Removal C A U T I O N Check if the printer is powered off before removing the printhead A D J U S T M E N T R E Q U I R E D When the printhead is replaced perform the platen gap adjustment Carriage Assembly Printhead C P B Scre...

Page 75: ...he release lever to the tractor feed 3 Remove 4 screws for LX 300 and 6 screws for LX 1170 CBP Tite 3x10 F Zn Torque 0 78 0 98 securing the upper housing to the lower housing 4 Remove the upper housing Figure4 2 Upper Housing Removal Upper Housing CPB 3x10 C B P Tite 3x10 F ZN C H E C K P O I N T When installing the upper housing be sure to insert LEDs on the panel board to the LED holes of the up...

Page 76: ...w 3x4 F Zn Torque 0 78 0 98 N M securing the upper shield plate to the lower housing 3 Remove the shield cover Figure4 3 Upper Shield Plate LX 300 4 LX 300 Remove 2 screws with washer C B B W 13 3x14 F ZN securing the printer mechanism to the lower housing See Figure 4 3 on page 76 LX 1170 Remove 4 screws with washer C B B W 13 3x14 F ZN securing the printer mechanism to the lower housing See Figu...

Page 77: ...ift the printer mechanism a little bit and remove harnesses from the main board assembly Figure4 5 Harness Removal 6 Remove the printer mechanism A D J U S T M E N T R E Q U I R E D Perform Bi D adjustment after removing the printer mechanism Printer Mechanism Main Board Assembly ...

Page 78: ...w C B P Tite 3x10 F ZN Torque 0 78 0 98 N M and the right grounding plate Table 4 5 Right Grounding Plate Removal LX 1170 4 Remove 2 Jack Sockets Torque 0 29 0 49 N M securing the serial interface connector to the lower shield plate 5 Remove the serial interface connector from the installation hole of the lower shield plate 6 Remove 2 screws C P Screw 3x4 F ZN Torque 0 48 0 78 N M securing the par...

Page 79: ...cting to the Power Supply board assembly Remove the power switch from the lower housing 6 Remove the harness connecting the Power Supply board assembly to the main board assembly CN8 of the main board assembly Press one edge of CN8 in order to remove or install the harness 7 Remove 4 screws C B P Tite 3x10 F ZN Torque 0 78 0 98 N M securing the Power Supply board assembly to the lower housing 8 Re...

Page 80: ...ism Disassembling Procedure Power Switch P S Board Assembly CN1 C B P Tite 3x10 F ZN CBP 3x10 C B P Tite 3x10 F ZN C B P Tite 3x10 F ZN START 4 2 7 10 PF Motor Assembly Removal 4 2 7 2 Platen Removal 4 2 7 9 Release Lever Position Sensor Removal 4 2 7 1 CR Motor Assembly Removal 4 2 7 3 Carriage Unit Removal 4 2 7 4 Ribbon Feed Mechanism Removal 4 2 7 5 RPE Sensor Removal 4 2 7 7 HP Sensor Removal...

Page 81: ...Removal 1 Remove the printer mechanism See 4 2 3 Printer Mechanism Removal 2 Remove the platen grounding wire from the platen 3 Release 1 hook at the rotating hole of the combination gear 17 5 27 and remove the gear from the right frame Figure4 12 Hook at the Combination Gear 17 5 27 4 Rotate right and left bushing 11 and remove them off from the right left frame 5 Remove the platen A D J U S T M ...

Page 82: ...Removal 2 Remove the printhead See 4 2 1 Printhead Removal 3 Remove the timing belt from the carriage installation point Figure4 14 Timing Belt Removal 4 Remove the CR shaft grounding plate from the base frame on the left side of the printer Bushing 11 Platen Gear 34 Platen grounding wire Combination gear 17 5 27 Right frame Left frame Bushing 11 Carriage Unit Timing Belt Installation Point ...

Page 83: ...ing to the left frame Figure4 16 Hook at the PG Adjust Lever 7 Remove the carriage unit along with the CR guide shaft and PG adjust lever from the printer mechanism PG adjust lever CR guide shaft Carriage unit Right frame CR guide grounding plate Left frame Base frame Parallelism adjust bushing Oil pad Parallelism adjust bushing A D J U S T M E N T R E Q U I R E D When the carriage unit is replace...

Page 84: ...Remove the printer mechanism See 4 2 3 Printer Mechanism Removal 2 Remove the hook of the RPE sensor installed at the paper guide 3 Remove RPE sensor 4 Remove the harness from the RPE sensor white Figure4 18 RPE BPE Sensor Removal 4 2 7 6 BPE Sensor Removal 1 Remove the printer mechanism See 4 2 3 Printer Mechanism Removal 2 Remove the hook of the BPE sensor installed at the paper guide 3 Remove B...

Page 85: ... Sensor Removal 1 Remove the printer mechanism See 4 2 3 Printer Mechanism Removal 2 Release 2 hooks of the PG sensor securing it to the left frame with tweezers and remove the sensor 3 Remove the harness from the sensor white Figure4 20 PG Sensor Removal 4 2 7 9 Release Lever Position Sensor Removal 1 Remove the printer mechanism See 4 2 3 Printer Mechanism Removal 2 Release 2 hooks of the releas...

Page 86: ...y to the right frame 4 Remove 1 hook at the right frame securing the PF motor assembly to the right frame and remove the PF motor assembly Figure4 22 PF Motor Assembly Removal C A U T I O N When installing the release lever position sensor be sure to insert it between the release lever and the right frame Release lever position sensor blue C H E C K P O I N T When installing the PF motor assembly ...

Page 87: ...elease the hook of the right frame securing the gear 27 5 and remove the gear plain washer 5 2x0 3x10 and the compression spring 1 18 5 Remove the combination gear 8 5 25 2 from the right frame Figure4 24 Paper Feed Mechanism Disassembly C H E C K P O I N T When installing the release lever be sure to align the marking on the release lever with the marking on the release shaft Release shaft Releas...

Page 88: ...2 7 10 PF Motor Assembly Removal 7 Release 1 hook securing the paper guide to the bottom of the paper guide to the lower paper guide pull the paper guide to the rear and remove it Figure4 25 Lower Paper Guide Removal 8 Release 1 hook at the left frame securing the base frame and remove it by pulling it to the rear Figure4 26 Left Frame Removal 9 Release 1 hook securing the paper guide to the lower...

Page 89: ...LX 300 1170 Revision C Disassembly and Assembly Disassembly and Assembly 89 ...

Page 90: ...C H A P T E R 5 ADJUSTMENT ...

Page 91: ...printhead 5 Follow the procedure in the flowchart below for the adjustment Figure5 1 Platen Gap Adjustment Table 5 1 Adjustment Method Platen Gap Setting Judging Method 0415 0 015mm Thickness gauge 0 40mm falls down by its own weight OK Thickness gauge 0 43 mm does NOT fall down by its own weight NG Table 5 2 Parallelism Adjust Bushing Rotational direction of the parallelism adjust bushing Platen ...

Page 92: ...nd the host computer by parallel interface cable 2 Turn on the PC and the printer 3 Set FF paper to the printer 4 Insert FD that contains the adjustment program and click GWBASIC EXE in the disk to execute GWBASIC The following DOS prompt screen appears 5 LX 300 Load and run the adjustment program Q80A12V bas Input Q80A12V and press ENTER Then input run LX 1170f Load and run the adjustment program...

Page 93: ... it and press ENTER LX 300 After pressing ENTER input 1 model number to select LX 300 LX 1170 After pressing ENTER go to step 8 8 LX 300 Printer 9 24 pin select screen appears Use and key to shift mark to the left of 1 9 pin and press ENTER to select 9 pin printer LX 1170 Select LX 1170 and press ENTER ...

Page 94: ...d key to shift mark to the left of the appropriate destination and press ENTER to select destination Table 5 3 Destination Setting List Destination Setting LX 300 EAI USASTD EAI Latin EURO EURSTD EUL SCANDINAVIA EFS EIS EIB EDG EDG NLSP NLSP EUL MIDDLE EAST DEFSTD EAL ESP EHK LX 1170 EUR NLSP NLSP Conti NLSP EUL NLSP 240V EUL NLSP 220V EUL 120V DEFSTD RUSSIA RISSIAN ESP Inter USASTD Table 5 3 Dest...

Page 95: ... the carriage width of LX 300 is 80 use and key to shift mark to the left of 1 80 column and press ENTER LX 1170 Not applicable Go to step 12 12 Main MENU appears Use and key or and key to shift mark to the left of 1 Bi D Adjust and press ENTER 13 The printing mode select menu for Bi D adjustment appears Use and key to select the printing mode and use and key to select Bi D setting Then press ENTE...

Page 96: ...ode 0 VRO 0 the pattern below will be printed Figure 5 3 Bi D Printing Pattern 1 Model 0 16 At step14 if you select Mode1 VRO 0 and press the SPACE bar 1 Bi D printing patter will be printed If Model 4 0 2 will be printed Figure 5 4 Bi D Printing Pattern 2 Mode1 4 17 By changing the VRO value adjust the Bi D Repeat step 14 to 17 until the value A becomes within the range below Refer to Table 5 4 B...

Page 97: ...t Less than 0 25 mode 1 Draft Less than 0 25 mode 4 NLQ Less than 0 15 C A U T I O N n This test program used here is originally the program for production line Operations that are not described in this manual are forbidden thereafter n The adjusted value will not be stored to the EEPROM on the main board assembly until the printer is turned off n Clear EEPROM by the panel operation does not clear...

Page 98: ...C H A P T E R 6 MAINTENANCE ...

Page 99: ...te the plastic parts or rubber parts n Use the specified amount of the specified oil Table 6 1 Lubricants Type Name Quantity Availability Part No Grease G 26 40g EPSON B702600001 Oil O 2 40cc EPSON B710200001 Table 6 2 Lubrication Points Fig Lubrication Points Lubrica nt Quantity 6 1 3 shafts and 2 bosses of the left frame G 26 1 2 grain of rice Shaft of RD ratchet G 26 1 grain of rice 6 2 Teeth o...

Page 100: ...te G 26 on the shaft of the RD ratchet G 26 1 grain of rice Planetary lever assy Combination Gear 5 1 16 2 Spur Gear 13 2 RD ratchet Driven pulley assy Lubrication Points Spur Gear 13 2 RD ratchet shaft Lubricate G 26 on teeth of gears G 26 1 2 grain of rice Lubricate G 26 at 3 places on 3 shafts at the right frame Shafts at the right frame assembly G 26 1 grain of rice Lubricate G 26 at 2 places ...

Page 101: ...e assembly upside down and lubricate at the touching part of the PF roller assembly with the release shaft 4 places Paper guide assembly G 26 1 grain of rice Release shaft Paper guide assy Lubricate G 26 into the hole of the right TR tractor frame facing to the TR guide shaft and the left TR frame Tractor assembly G 26 1 2 grain of rice The picture at the left is the back of the printhead 1 Set th...

Page 102: ...me Carriage G 26 40mm x 2 places Lubricate G 26 on the 2 touching position with CR motor assembly from the inside of the base frame CR motor assembly G 26 1 2 grain of rice x 2 Lubricate G 26 on the installing shaft of the Combination Gear 17 5 27 of the right frame Combination gear 17 5 27 G 26 1 2 grain of rice Lubricate G 26 to the touching position of the platen grounding spring with Platen sh...

Page 103: ...C H A P T E R 1 9 7 APPENDIX ...

Page 104: ...N1 Parallel I F 36 CN2 Serial I F 6 CN3 HP Detector 2 CN4 PE Rear Sensor 2 CN5 Release Detector 2 CN6 PE bottom Detector 2 CN7 PG Detector 2 CN8 Power Board C294PSB PSE 9 CN9 Printhead 12 CN10 CR Motor 4 CN11 PF Motor 4 CN12 CS Motor Option 10 CN13 Operation Panel C294PNL 12 Table 7 2 Connector Pin Assignments CN3 Pin I O Signal Name Function 1 I HP Carriage home position sensor signal 2 GND Signa...

Page 105: ...CN8 Pin I O Signal Name Function 1 VH 35VDC 2 VH 35VDC 3 GP Signal ground 4 GP Signal ground 5 O PSC Power save control 6 O POFF Power off signal 7 5V 5VDC 8 5V 5VDC Table 7 8 Connector Pin Assignments CN9 Pin I O Signal Name Function 1 O HD7 Head data 7 2 O HD1 Head data 1 3 O HD5 Head data 5 4 O HD3 Head data 3 5 HDCOM Common VP 6 HDCOM Common VP 7 HDCOM Common VP 8 O HD2 Head data 2 9 O HD9 Hea...

Page 106: ...C 2 CS HOLD 5VDC 3 5V 5VDC 4 O CSA CS motor phase A 5 O CSXA CS motor phase XA 6 O CSB CS motor phase B 7 O CSXB CS motor phase XB 8 GP Signal ground 9 I CSSW Color ribbon sensor signal 10 GND Signal ground Table 7 12 Connector Pin Assignments CN13 Pin I O Signal Name Function 1 5V 5VDC 2 O LED5 LED5 3 O LED4 LED4 4 O LED3 LED3 5 O LED2 LED2 6 O LED1 LED1 7 I SW1 Switch 1 8 GND Signal ground 9 GND...

Page 107: ...tarting Month 0 12 See Remote spec SDcmd 00H 00H 12H Starting Data 0 31 See Remote spec SDcmd 00H 00H 13H Backup Flag1 b0 In Tear Off state 0 No 1 Yes b1 to b7 Reserved 00H 00H 14H 15 H Paper edge length 0 to 22x432 by 0 0588mm 1 432inch 00H 00H Area1 22H 23 H Character table selection 0 PC437 21 Code MJK 1 PC850 22 Bulgaria 2 PC860 23 Estonia 3 PC863 24 PC774 4 PC865 25 IC8859 2 5 PC861 26 PC866L...

Page 108: ...value of 5CH 5DH 0000H 8 5mm 0000H 8 5mm 36H 37H Reserved 0000H 0000H 38H 39H Bottom margin for tractor 1 to 22x432 by 0 0588mm 1 432 inch 0000H 279 4mm 11 inches same as default 0000H 0000H Table 7 13 EEPROM Address Map continued Address Explanation Setting QPIT Settings Factory Settings 3AH 3BH Reserved 0000H 0000H 3CH Font selection 0 Draft 1 Roman 2 Sans serif 00H Draft 00H Draft 3DH Pitch sel...

Page 109: ...13 EEPROM Address Map continued Address Explanation Setting QPIT Settings Factory Settings 4DH Tear off wait time 3 to 30 by 0 1 sec 00H 3 sec same as default 00H 3 sec 00H 3 sec 4EH 4FH Tear off adjustment value 432 to 432 25 4mm 1inch to 0mm 25 4mm inch by 0 0588mm 1 432 inch 0000H 0000H 50H Serial baud rate 0 19200 bps 1 9600 bps 2 4800 bps 3 2400 bps 4 1200 bps 5 600 bps 6 300 bps 00H 19200 00...

Page 110: ...09H 000000H Standard 000000H Standard 6BH Reserved 00H 00H 6CH Market 0 Standard version 1 NLSP version 00H 00H Table 7 13 EEPROM Address Map continued Address Explanation Setting QPIT Settings Factory Settings 6DH IBM character table 0 Table2 1 Table1 00H 00H 6DH IBM character table 0 Table2 1 Table1 00H 00H 6EH Fatal Error 00H 00H 6FH Printable column 0 80 columns 1 136 columns 01H 01H Area 3 70...

Page 111: ...X 300 1170 Revision C Appendix Component Layout 111 7 3 Component Layout Component layouts for each electric circuit board are shown as follows C294 MAIN BOARD Figure 7 2 C294 MAIN Board Component Layout ...

Page 112: ...LX 300 1170 Revision C Appendix Component Layout 112 C294 MAIN B BOARD Figure 7 3 Component Layout C294 MAIN B Board ...

Page 113: ...LX 300 1170 Revision C Appendix Component Layout 113 C294PSB BOARD Figure 7 4 Component Layout C294PSB C294PSE BOARD Figure 7 5 Component Layout C294PSE ...

Page 114: ...LX 300 1170 Revision C Appendix Component Layout 114 C294PNL BOARD Figure 7 6 Component Layout C294PNL ...

Page 115: ...ms Figure 7 7 LX 300 Exploded Diagram 1 127 126 for EAI LX 300 No 01 Rev 01 10202 570 451 127 127 103 120 129 500 129 102 106 100 116 117 117 102 101 200 320 127 130 400 119 104 125 131 132 132 200 127 127 127 127 127 450 300 320 123 118 127 115 105 109 111 124 127 180 127 127 127 128 128 401 400 190 ...

Page 116: ...503 561 562 514 517 539 563 536 537 579 506 538 540 578 511 580 568 564 559 515 514 569 567 566 565 590 571 545 576 581 531 534 533 532 531 535 577 523 524 529 520 528 525 526 527 528 526 527 521 522 553 554 551 556 555 558 557 552 550 530 502 542 559 541 512 516 505 510 509 559 514 544 532 513 510 542 501 559 543 650 651 518 581 581 581 581 ...

Page 117: ... 7 9 LX 1170 Exploded Diagram 1 LX 1170 No 01 Rev 01 10309 105 451 103 120 129 129 500 129 129 401 400 400 100 104 530 122 128 128 111 128 119 119 200 519 547 550 550 549 550 550 119 119 119 119 300 180 126 125 530 130 119 119 119 119 119 450 121 119 124 118 320 123 116 117 117 106 107 109 ...

Page 118: ... 501 541 508 546 119 523 524 535 543 540 536 517 537 562 514 563 651 651 504 503 531 534 533 532 531 542 502 511 568 564 515 559 514 569 590 571 529 520 521 522 556 594 552 551 553 554 558 557 558 555 593 528 528 528 528 525 525 525 525 526 526 526 526 527 527 527 527 545 565 567 566 560 538 506 561 592 539 650 512 516 505 510 509 119 559 518 ...

Page 119: ... 120 LOGO PLATE 123 FERRITE CORE FPC 25 20 124 SHEET PROTECT 125 CONNECTOR LOCK NUT 126 RIVET B TITE SCREW TYPE 127 C B P TITE 3X10 F ZN 128 C B S SCREW 129 C B B TITE P 13 3X14 F ZN 130 C B O SCREW 4X8 F ZG 131 C P SCREW 132 C B S SCREW 180 GUIDE STACKER 200 BOARD ASSY MAIN 320 HARNESS 300 BOARD ASSY POWER SUPPLY 400 POWER CABLE ASSY 450 BOARD ASSY PANEL 451 SHEET PANEL 500 PRINTER MECHANISM M 3M...

Page 120: ...ARRIAGE ASSY 537 GROUNDING PALTE HEAD 538 OIL PAD 539 LEVER G ADJUST 540 RIBBON MASK Table 7 14 LX 300 Parts List Number Parts Name 541 TIMING BELT 542 BUSHING PARALLEL ADJUST 543 CABLE HEAD 544 HARNESS PG 545 PAPER GUIDE LOWER 550 SPURGEAR 17 551 PAPERSUPPORT 552 FRAME TR RIGHT 553 FRAME TR LEFT 554 TRACTOR LEFT 555 TRACTOR RIGHT 556 SHAFT TR GUIDE 557 SHAFT TR DRIVE 558 RETAINING RING 559 DAMPER...

Page 121: ...X 300 Parts List Number Parts Name Table 7 15 LX 1170 Parts List Number Parts Name 100 HOUSING ASSY LOWER 103 HOUSING UPPER 104 SHIELD PLATE LOWER 105 COVER ASSY PRINTER 106 KNOB 107 COVER ASSY PRINTER REAR 109 SHEET GUIDE ASSY 111 SHIELD PLATE UPPER 116 HEXAGON NUT 117 GROUNDING PLATE 118 GROUNDING PLATE PANEL 119 C B P TITE 3X10 F ZN 120 LOGO PLATE 121 GROUNDING PLATE L 122 GROUNDING PLATE R 123...

Page 122: ...CTOR LEAF B1 515 GROUNDING WIRE PLATEN 516 PULLEY ASSY DRIVEN 517 HARNESS HP 518 C P B SCREW Table 7 15 LX 1170 Parts List Number Parts Name 519 ROLLER PAPER EJECT 520 PAPER GUIDE 521 DETECTOR PE REAR 522 HARNESS PE REAR 523 DETECTOR PE BOTTOM 524 HARNESS PE BOTTOM 525 HOLDER ROLLER PF 526 ROLLER PF DRIVEN 527 ROLLER PF DRIVE REAR B 528 COMPRESSION SPRING 13 72 529 SHAFT RELEASE 531 RETAINING RING...

Page 123: ...E 558 RETAINING RING 559 DAMPER 560 FRAME BASE 561 PAPER GUIDE SUPPORT 562 GROUNDING PALTE SHAFT CR 563 SHEET CABLE HEAD 564 GEAR 34 565 SPUR GEAR 27 5 566 PLAIN WASHER 567 COMPRESSION SPRING 1 18 568 COMBINATION GEAR 8 5 25 2 569 HARNESS RELEASE 571 COMBINATION GEAR 17 5 27 Table 7 15 LX 1170 Parts List Number Parts Name 590 LEVER RELEASE 592 SHEET CABLE CR 593 SPURGEAR 17 594 RETAINING RING 650 ...

Page 124: ...LX 300 1170 Revision C Appendix Electric Circuit Schematics 124 7 6 Electric Circuit Schematics o C294MAIN Board o C294MAIN B Board o C294PSB Board o C294PSE Board o C294PNL ...

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