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1. Ref Name for service manual Name for price list Q ty Note 101 NE detectoradjustment screw SC REW DETEC TO R ADJ USTM ENT N E 1 102 Logo plate LOGO PLATEAB 1 103 Head caution seal SEAL CAUTIO N HEAD B 1 104 Fixed blade holder spring SPRING BLADE HOLDER 1 105 Switch screw SCREW SWITCH 1 2 106 Caution seal SEAL C AUTION C 1 107 Frame R FRAME R 1 108 Front frame FRAME FRONT 1 109 Frame strengthening plate R PLATE FRAME STRENG THEN R 1 110 Frame strengthening plate L PLATE FRAME STRENG THEN L 1 111 Circuit board frame FRAME CIRC UITBOARD A 1 112 BM detector holder HOLDER BM DETECTOR 1 113 Spring holder plate PLATE SPRING HOLDER 1 114 Fixed blade FIXED BLADE 1 115 Reduction gearC GEAR REDUCTION C 1 116 Reduction gearD GEAR REDUCTION D 1 117 Paperfeed motor damper DAMPER PAPER FEED MOTOR 3 118 Motorground plate GROUND PLATE MOTOR 1 119 Center frame FRA ENTER 1 120 Label paperholder HO LDER LA BEL 1 121 LED holder assembly HOLDER LED ASSEM BLY 1 122 Paper holding roller ROLLER PA PER HOLD 8 123 Tenson plate spring SPRING TENSION PLATE 2 124 Coverleaf spring PLATE SPRING CO VER 1 125 Head holder spring SPRING HEAD HOLDER 2 126 Label paperguide GUIDE LABEL 1 127 Hinge cover COVERARM AA 1 128 Coveropen lever LEVER C OVER OPEN 1 129 Lever shaft SHAFT LEVER 1 130 Lever button BUTTON LEVER AA 1 131 Feed button BUTTON FEE
2. Main assembly unit case Auto cutter unit Switch circuit Main circuit N E detector Cover detector board assembly board unit assembly assembly Paper feed Label paper Sub circuit board motor holder assembly Representation of Small Parts The standard small parts used in this chapter such as screws washers and nuts are all indicated with abbreviations For details see Appendix D Parts List Disassembly and Assembly 3 3 Rev C Replacing the Thermal Print Head Assembly N CAUTION This job may be performed only after turning off the printer and waiting for approximately 10 minutes The thermal print head assembly may be hot and otherwise you might get burned When performing this job anti static measures such as wearing a grounded wrist band Failure to do so may result in thermal print head failure Do not touch the print head portion that appears like a black line and the adjacent areas in the thermal print head assembly Touching this area may result in thermal print head failure When the thermal print head assembly is contaminated or has a deposit of foreign particles wipe it off with a cotton swab moistened with alcohol Open the roll paper cover Remove the cutter cover by spreading area of the main case assembly as shown below Main case assembly 3 4 Disassembly and Assembly Rev C C onfide ntia TM L90 Serv
3. Printing is not performed correctly due to a coveropen Replace the autocutter unit Recovers automatically when the roll paper coveris closed Paperlayout eror JU LI NN Label paperorthe black mark is not detected orthe paper layout of the paper installed in the printerand the setting of the paperlayout defined by the GS Ecommand do not match Recovers automatically when prpperlabel paperorthe black mark installed in the printer Q Note With the memory switch the roll paper cover open error can be specified either as an automatically recoverable error or as a recoverable error Rev B Troubleshooting Guide 2 5 Recoverable errors Table 2 4 Recoverable errors Error ERROR LED Blinking Pattem Description Remedy Autoc utter eror The autocutter does not work Checkto see if paperisjammed correctly around the autocutter If so that remove the jammed paper After then close the roll papercover tum it off and then tum it on again lt Approx 5 125e Checicfor paperdussorto particles attached to the autocutter blade See the section Cleaning in Chapter5 for details on how to remove these Checkthe cutter motor sub assembly see page 2 8 Replace the motor and the main circuit board unit if the cutter motor sub assembly hasbeen shorted See page 3 39 3 13 Replace the main
4. 5 Rig 2 1 4 lt m Wy 0 2 ti amp S 8311 2 ATIS ADTRG 2A FG TC e AE m 1 mme 3 idi ot amp 2 E t ATIB PRA 2 1 UIBSEL BMS 1 GND TEE RR CIC 4 8 1 UCN a3 i STILE 2 7 2 M Swa 20 3 6 6 3 R37 BM 5 4 vo 1 7 5 4 nnvo2 247 1 1 Anis e 3 Eurer m 2 ete E nM nTMI2 20 2 4 qiie TB 6 1 E 2 9 3 0 GEJ ATIS SOLATI Reserved 82 SAKI e reserved Li 1 SODAT e Reseved 2 2 2 A13 1 sur 2 Aid 5 HH 414 io LI SOK a 2 AIS 4 4 pa E I o 5 An 3 6 SDAT E 5 4 5 5 NN BOARDTH Pu 176 _ 5 586865 2 dhin ATUS RTC DAT 248 DH oie lt 222 5 o TH500 IZ H UK 1 ATIS ded T 8 85 88 bisis isll ATE 2 ATUS SERVED Bs NA om nENTCE 2 nFNTGE lt U4 168 INK E 17 1 17 1167 Tees 5 Ser Peak Per greens gigas Socee SENRU ENS gy ears aS Kos 022220222202222 gt gt gt 020 5 lt 542595 Emi nCE14 0555 lt 5 gt 555 lt 25252 5 8
5. IoSNSINS oA BRE i mu Psw 8 ATI aa RPF PHB2 A yy E DKDSt 5 PHBI TATE INK NE SANE AT RPF 2 Mj nad PPF 20 ROUT LED Tom ATs st 1 28 PHB2 20 PWR LED 00 nol Anis 1127 FCR PAET 7 9 20 nWDTOUT ares D ors ATIS RCH PHS o ATT 19 D3 E p CLKINDTR m Rr MES FCR PHAT um n ATi 04 225 REQ Arii 1 um 17 217 2985 5 4 2 6 ACI ATAS D5 3865 amp E ATI ATUS 6 3 RPF PHBT ee M 6 2 06 5 gt 9154 PXD ATi08 e 1119 T 2 PHAZ 5 DKDi E att 50 57 z5303 059909 DO ATiO7 ATTIE 8 1 RPF PHAT HEP M 5 DKD2 c 8 sszopQzo XXX oC Zzo N25 RESET Ris 24 aes 8 Us 9320204 AEE LEN DSR RESET vss4 EREE 2905 55482 EEE T RESET 55 9495288 55552 558255 2222 E 520554 22552 9492924 ERRER 85990545020 ae DE cR HCTS 4 TFU nmo SEREEN TATT EANAN 15 CTS CTS 4 xioos58r5 250 5555 530654075558 EEEL Gores 20229 00509 20058605525 CNDA LARIS 4 B22 amp 9Pag225505565t20502052ctccccc2008608502o00cccc2FFF F KOPCLKINDTR 4 AT REQ ATP e ans DET ATE esl lo e sies S An
6. Power Supply On Off Control The figure below shows a block diagram of the power supply and on off control circuit ac Logic circuit Power off command The logic circuit operates according to the specifications listed in the table below Table F 3 Logic circuit functions DC IN Dip switch 1 1 Power Switch DC Out ON OFF ON OFF lsec ON ON OFF 3sec ON OFF Appendix F 4 Overview of Electric Circuits Rev B C onfide ntia TM L90 Service Manual DIP switch on the main circuit board DSW2 This DIP switch is used only at the factory Always set this to OFF Switch Circuit Board Assembly The switch circuit board assembly consists of three LEDs one switch and one DIP switch Sub Circuit Board Assembly The next table shows the major components of the sub circuit board and their major functions Table F 4 Major components of the sub circuit board unit and their major functions Block location Signal name Description Function Connector CNSI PS ConnectorforPS adapterconnection CNS2 DKD Connectorfor drawerconnection CNS3 Cable formain circuit board connection Interface Circuit Board Unit The interface circuit board unit serves as the core of the system that controls data send and receive operations between the TM L90 and host computer Various interface circuit boards can be used including the EPSON UB series ex
7. 2 6 Troubleshooting Guide Rev B Confidential Q Note TM L90 Service Manual When a paper jam is present in the autocutter turn off the unit and remove the jammed paper Then turn it on again Non recoverable errors CAUTION When any error shown below occurs turn off the power as soon as possible Table 2 5 Non recoverable errors Error ERROR LED Blinking Pattem F Approx 320 msec Description Remedy R W error in memory orgate After R W checking the printer Replace the main circuit board doesnot work corectly unit See page 3 13 High voltage The powersupply voltage is 1 Replace the power supply unit extremely high 1 Replace the main circuit board unit See page 3 13 Low voltage emor The power supply voltage is Replace the power supply unit extremely low Replace the main circuit board unit See page 3 13 CPU execution eror The CPU executesan incomect 0 Replace the main circuit board address unit See page 3 13 Interface circuit board eror Interface circuit board doesnot Check installation status of the work correctly interface circuit board Replace the interface circuit board See page 3 11 Replace the main circuit board unit
8. The explanations below show how to power the unit ON or OFF by each method Power ON OFF method using the power switch Power ON Press the power switch Power OFF Hold down the power switch for more than 3 seconds Power ON OFF method with disabling the power switch Power ON Turn ON the power breaker at the store where the printer is installed or turn ON the switch on the power box or wall outlet where the printer is connected Power OFF 1 Execute the power off process using the DLE DC4 fn 2 command 2 Make sure the POWER LED starts flashing 3 Turn off the power breaker or the switch on the power box or wall outlet Rev B Handling 7 5 Loading the paper roll CAUTION The manual cutter blade is sharp Do not touch it with your hands when mounting or EL roll paper because you can be injured Be aware that the thermal print head and its supporting parts become very hot Be sure not to touch these parts Touching them may cause burns Q Note Be sure to use paper rolls that meet the specifications Do not use paper rolls that have the paper glued to the core because the printer cannot detect the paper end correctly 1 Make sure the printer is not receiving data otherwise it may be lost Open the paper roll cover by pressing the cover open button 2 Load the roll paper inside the printer in the correct direction Horizontal installation Vertical installation 7 6 Handling Rev B
9. 3 4 Disassembly and Assembly of the 100 3 9 First Level sates eter aria reote he s nae neva edt dein m dcs 3 9 Disassembly and Assembly of the Printer Mechanism 1 3 15 First Level 3a xe iee a aue es Tea RE eu PR RN CSI 3 15 Second Level Rec Cere e bos E an cot 3 35 Third bevel 4 cere e eee ue Va eR vade eda der pes ea enar 3 47 Chapter 4 Adjustment and Settings Threshold Value Setting for Detectors i ug efie esu eue eU 4 1 Chapter 5 Maintenance Inspection Lubrication and Cleaning Periodic Maintenance or Inspection 2 2 5 1 EVA LIC ALON cy Cte ed t S cr m desi ne alk ses e REG AE EA RAM 5 1 Cleaning cute eee dre e vac eRe 5 1 Recommended Cleaning Ee eA reg ie Bold S Ue 5 1 Cleaning the Case zc ueber ce tee ute ob ue veel meals ee ae Ore ru EAE METUIT 5 2 Cleaning the Thermal Head idu RE eme dee Pee 5 2 Chapter Installation Installation Pr cautions seere ecn RO EE ERR RE NEE Od PE eR aU Ra edt 6 1 Installation tete om t e a a old o DOE UE Bet dae db t heh
10. N N e x E E E i T i i i i i z i i pere o TH D3 TH D4 Appendix F 18 Rev B MECHA Sensor Block Drawing Number 23 PF Driver Block Drawing Number 24 Rev B 1 ARRE 1 ALRE 1 RNE 1 AC RST 1 CVS 1 PTLED COM1 1 PTLED COM2 PF PHI 1 PF 10 20 PF VR PF PH2 PF 120 RLI 2 VBUS 9 wh ca dial T lt RE 1 2 5 20 lt 4 RL6 1 2 RES 20 1 2 4 5 20 lt RL9 1 2 4 RST S 20 RLIO 1 2 5 5 20 EID BLOCK 10 M5 J RL4 lt RLS y q Q cr 05 ftf 5 77 a RL11 3 2 1 2 gt PWR _LED1 20 5 1 1 2 d d PWRLED2 20 RL12 _ 1 A Peto UP1 PFD VBB 6 REF 15 RC po 35 Gi 64 H3 1 vio G2 03 11 1 2 SENSE 15 ow PHASE OUTA FPS 02 Dt F2 34 A 1 PF t B PF VR d UP2 1 PFD 18 2 REF 35 a RC 00 ca H3 1 PF PH2 6 GP 0371 1 2 gt 8 PF PH2 3 1 vcc SENSE 10 ow
11. qu EE RE EH eR DUC S d ed 4 Paper Roll Supply Device ag cec prec ce ipe ke E eere re A 5 Electrical Specifications onis e opis a bbe b Ue es nee DEDE IHE Rc Eds A 6 Dimensi ns nd M ss i gue uar dre er REX e BW wT Peg o E per EET A 6 Environmental Conditions TVAE RETRO S Sud E RENTE Eg A 7 Drawer Kick out Connector 02 4 A 8 Interfaces s cioe tud c bt abu e vedi eh heb ed e NR dt erg A 8 Buttons and Switches ouvre de RI Fe C ra E UC E EY HE ITE A 8 PO WETS WIECH usu Red A de Sn E dere deste eh ao tenu eade dad lvl A 8 Panel DUttoD siu bare tie Er Ree tee rerba ca A 8 DIP Switehesand Memory velim natni paced hri e datas CER ne E ETE FERRE A 9 Indicators ice ede uS Wee e EA E Mam A 9 LEDS s ian RE oM tav tata tps Pais Da aee NM aT s Res A 9 Appendix Overview of the Mechanisms vus io Des D He aM Rate vast dts fed par Ges PONE doa odas NIRE Ls B 2 Print Papet Feed Unit UP d D da ie eerte B 3 Thermal Print Head ei aed pase ete onte BIOS Dice ee BE et uetus Re B 4 Raper Supply Unit c ho Mae ie Denis a ende ene ture risu e B 5
12. Cleaning the Case Use a dry cloth or lightly dampened cloth to clean the case Disconnect the power cord from the wall outlet before doing this Avoid using alcohol benzene thinner trichloroethylene or ketone based substances to remove dirt or foreign matter from the printer because these substances can affect or damage plastic and rubber parts Cleaning the Thermal Head N CAUTION Turn off the printer power before cleaning 2 Note that the thermal head thermal element and radiation plate becomes very hot during normal operation creating the danger of burn injury Be sure to wait for about 10 minutes after turning printer power off before beginning the cleaning 1 Open the paper roll cover 2 Clean the thermal element the area that looks like it is marked with a thin black line of the thermal head with a cotton swab moistened with an alcohol solvent ethanol methanol or IPA N CAUTION Never touch the thermal element with your hands Doing so can damage the thermal elements Radiation plate Head chip Driver IC Connector 3 After confirming that the alcohol solvent has dried completely close the paper roll cover 5 2 Maintenance Inspection Lubrication and Cleaning Rev B C onfide ntia TM L90 Service Manual Chapter Installation Installation Precautions CAUTION Do not place the printer in an unstable place such as an unsteady base or on a slanted surface T
13. nFRST DRAWER KICK DRIVER 1 R19 lo swa Sy SONA LI nTIMO1 Mete lo Y x La TIMOR 18 nOFF 2 18 Fg SEL IRL IF PWRON XERRO 4 PSW 4 Power SW ul gt gt CLKINDTR vio Note Non contiguous numbers are given to the drawing numbers iwprour nERRDIS DSW 8 18 DSW 8 1 821 gt 1 nova G ES 4 enun ue sl 1 1 nNMI y y vio pet BSPOVEH 1 2 nACOVC Y Me 4 KM e of TRG Kno 18 gt gt nERRDIS 122 122 122 122 122 122 128 128 123 123 123 123 1 MFS yes ROUT LED e 2 2500 1 1 RLE P 3 2 23 PWRLED 1 5 i ova 77 X 1 SEL HRDATA x gt HRAO HRAS TH TH TH TH TH TH TH 98 89 PTLEDi PTLED2 ARRE ALRE
14. dul 2 Gy PAD MC ic je fe ws www L N p Overview of Electric Circuits Appendix F 7 Confidential Parts Layout Main Circuit Board Unit Parts Layout for the Main Circuit Board Unit Side A R69 Eo L In71cSgz 1873 asst n IRI 5 5 CARN SO gr TOWO 2020202020902202020202020200 lt lt lt lt lt lt lt lt lt lt lt lt lt lt ONGC DU OFS Nea aes FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE ONLY WITH SAME TYPE AND RATINGS OF FUSE 227 TM T9O MAIN 15 4 CNI 5 n 1 cac UNO T 112 Lr 211 B 9 ED 79 4 d M TI co 5 LJ R18 E Siem xs Gres o Cd rm e CJ E R84 wag wl As Appendix F 8 Overview of Electric Circuits Rev B TM L90 Service Manual Confide Parts Layout for the Main Circuit Board Unit Side B R46 C3 2 e R68 Rea R53 R56 zm e ine amp RM2RM1 2 RM6 eNe oe RA gt 186 0 51 t mG 256 555 hed SET 2056091 00 2040808 00 2040810 00 Overview of Electric Circuits Appendix F 9 Rev B Confidential Switch Circuit Board Assembly Parts Layout for the Switch Circuit Board Side A Ma CMK Pex SW1 j TM T9 SWITCH O
15. 1 Dei SET 2056095 SEEN c 1 CNS 4 16 2 1 CN2 2 17 CN1 1 Parts Layout for the Switch Circuit Board Side B 8 00 0010602 SlHUd Sub Circuit Board Assembly SET 2036092 00 1 e a 2 D Q T Appendix F 10 Overview of Electric Circuits Rev B Co dentia Circuit Board Diagrams Main Circuit Board 1 of 3 Drawing Number 1 Rev B This number showsthe drawing number short e An 2 DSAM powem 2 i nOFF_TRG aa FN AD AMY amp noFF TRG 820 ceo 14 C51 BLOCKO AUS
16. BE meu wm Ste 4 ATE akj 212122474 215242474 939 iii ii iii Riiie iiie iiie nn 5 RES g y o ids Staring DOR res ERES 4 ATIO 8 8 HH Kg S r8 DTRS SS b ATE INTS TOT 95 INTS Ti ang y ATS INT ATi E E 8 e 5 B 5 T BLOCK 1 2 3 D 4 4 5 ICEMD 5 CasTEST 2 ATPGIN ATIS 8 ATPGCE ATi TM L90 Service Manual Appendix F 12 Main Circuit Board 2 of 3 Drawing Number 2 Rev B VBUS BLOCKOD E zi 2 8 1 2 4 5 7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 nPGMCE nFNTCE Memory Rewrite nRD nWR nLCAS nHCAS nRAS2 1 DSWMEM lt PSWMEM i at 140 7 an 1 DO D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 TM L90 Service Manual Appendix F 13 Co Main Circuit Board 3 of 3 Drawing Number 20 Rev B dentia 1 one VF CIRCUIT SD IF RD IF_N25RES IF DSRRES IF HCTS Page F 16 BB IN I e ii 3 y Eb ES
17. Original paper or specified paper for detector setting TF50KS Nippon Paper Industries Co Ltd P350 Kanzaki Specialty Paper USA KF50 KANZAN Spezialpapiere GmbH Germany Q Note You cannot make an accurate setting if you do not use the specified paper shown above 2 With the roll paper cover opened turn the power on while pressing the FEED button 3 Press the FEED button again eight times 4 Close the roll paper cover 5 The printer performs the setting Once the setting value is printed on the roll paper the setting is finished The printer power may be turned off automatically depending on the DIP switch setting The setting value is stored in NV memory on the main circuit board unit Rev B Adjustment and Settings 4 1 Confidential Q Note For details about the settings listed below see Chapter 6 Installation Setting for the position of the roll paper near end detector Setting for the roll paper cutting method Roll paper width setting DIP switch settings NV memory settings 4 2 Adjustment and Settings Rev B Chapter 5 TM L90 Service Manual Maintenance Inspection Lubrication and Cleaning Periodic Maintenance or Inspection There are no parts in this product that require periodic maintenance or inspection Lubrication There are no parts in this product that require periodic lubrication Lubrication is required during disassembly and assembly Obs
18. Rev B General Specifications Appendix A 9 Appendix A 10 General Specifications Rev B C onfide ntia TM L90 Service Manual Appendix B Overview of the Mechanisms This printer consists of the next four units Cover unit LI Print paper feed unit Paper supply unit Autocutter unit The illustration below shows an external view of the printer mechanism Cover unit Pc 25 2 Autoc utter unit aper supply unit Print paper feed unit Rev B Overview of the Mechanisms Appendix B 1 Cover Unit The cover unit is installed onto the paper supply unit by a hinge and it makes a rotational movement Attached to the platen holder of the cover unit are the paper feed roller shaft holder platen cover open lever lever shaft lever button fixed blade and reflective photo detector The reflective photo detector is able to detect the black mark on the non printing surface of the paper Platen holder Reflective photo detector wv x em Paperfeed roller 3 shaft holder P Fixed blade Cover open lever E 2 aN Lever shaft Paper feed roller shaft holder Lever button 2 7 When an operator closes the cover unit the cover open lever is engaged by the protrusions on the print paper feed unit and the cover unit is locked to the print paper feed unit At this time the paper feed roller shaft holder hits the locators on the right and the left frames of the print paper feed unit an
19. X dentia Overall Exploded Diagram Co Case Unit A Ng SAY 4 Parts List Appendix D 11 Rev C TM L90 Service Manual dentia Co Printer Mechanism Parts List Appendix D 12 Rev C TM L90 Service Manual dentia Co Appendix E Lubrication Points Diagram Lubrication Points Diagram Appendix E 1 Rev B TM L90 Service Manual Confide Appendix F Ove f Electric Circuits rview o General Description The figure below shows a block diagram of the electric circuits for the TM L90 jeuueu Jeiuud p4eoq eAup peau jeuueu SyinoJr 105098 WOud33 15 60 10043 WOudaa zn TD a 10 0w pn pad jedeg nouo 1031u0219 0d uleis s amod lr uieis s Ag 5 amod Jenup aveau pieoq 4 1 eoejiojul E pueoq uouws uouws yms A ddns 1amog Overview of Electric Circuits Appendix F 1 Jamelq Rev B Confidential Main Circuit Board Unit The main cir
20. C 9 entia TM L90 Service Manual 3 Pullouta small amount of roll paper 4 Then close the paper roll cover Horizontal installation Vertical installation Removing the roll paper Open the roll paper cover and remove the used paper roll core if there is one Rev B Handling 7 7 Appendix A TM L90 Service Manual General Specifications Printing Specifications Printing method Dot density Paper Specifications Paper type Form Paper width Rev B Thermal line printing 203 dpi x 203 dpi dpi dots per 25 4 mm dots per inch Specified thermal roll paper The following paper can be used Receipt paper without black mark Receipt paper with black mark Label paper without black mark Label paper with black mark Refer to page 6 13 Paper Layout Automatic setting mode Paper roll 79 5 0 5 mm 3 13 0 02 for 80 mm 3 15 paper width 59 5 0 5 mm 2 34 0 02 for 60 mm 2 36 paper width 37 5 0 5 mm 1 48 0 02 for 38 mm 1 5 paper width General Specifications Appendix A 1 Paper Specifications Specified roll paper Roll Width Original 80mm 4315 60mm 2 36 38mm 1 5 paper Monochrome thermal ENTPDO80090 TF60KS E roll paper Monochrome themal ENTPEO80090 TF11KS ET roll paper thickness type Two color thermal roll ENTPC 080090 PD750R paper Labelsto
21. Changing th paper width ete gp eec eg ree oem E E eU dut Salada ad B 6 Rev B iii Confidential Autoeutter Dnit unam bI BA ARUM Ru ERUIT Fulbcutand partial cut eee E RU WG bMS Que Manual Cut is uUa MERDA eolit ueni a s a tee ane eld rei Appendix C Tools Appendix D Parts List Alphanumeric Eist sis oigucuRT oat e EI OR ave Reference Number Listes us UD EI VM Overall Explod d Diagram RR RP P en eee td bial pras uerunt te Case UNE AD Beth wees Printer Mechanism v CVV Y eA rece entr AERA Appendix Lubrication Points Diagram Appendix F Overview of Electric Circuits General Description set ees ees edP uit BAG aaa thoes ets Main Circuit Board Unit rele le pc ee rr Ra E Switch Circuit Board Assembly isine ed n Ree oe RE E Sub Circuit Board Assembly sherep eu eene Interface Circuit Board Unit 2 LOSE oe tree hades ed eke Sete elie he oe INR Oe Me Bee Test points on the main circuit board
22. Continued use may lead fo fire or electric shock Immediately unplug the equipment Only disassemble this product as described in this manual Do not make modifications to the unit Tampering with this product may result in injury fire or electric shock Be sure to use the specified power source Connection an improper power source may cause fire or shock 2 Never insert or disconnect the power plug with wet hands Doing so may result in severe shock Do not allow foreign objects to fall into the equipment Penetration by foreign objects may lead to fire or shock If water or another liquid spills into this equipment unplug the power cord immediately Continued usage may lead fo fire or shock Do not place multiple loads on the power outlet wall outlet Overloading the outlet may lead to fire Always supply power directly from a standard domestic power outlet Handle the power cord with care Improper handling may lead to fire or shock Do not modify or attempt to repair the cord Do not place any object on top of the cord Avoid excessive bending twisting and pulling Do not place cord near heating equipment e Check that the plug is clean before plugging it in Besure to push the prongs all the way in Rev B Handling 7 1 N CAUTION Cj Cj Do not connect cables other than as described in this manual Different connections may cause equipment damage and burning Be sur
23. Outside 31 4 mm 1 24 Adjusting screw Fixed position 1 diameter approximately 36 mm 1 42 2 diameter approximately 41 mm 1 61 80 mm 3 15 default setting 38 mm or 60 mm 1 5 or 2 36 paper width can be selected using the label paper spacer packed in the box By adjusting the label paper spacer it is also possible to set optional positions in the range of 38 mm to 70 mm 1 5 to 2 76 When you attach the label paper spacer you must also specify the paper width setting in the NV memory to match the print areas Once the printer is used do not change the paper width from narrow to wide Otherwise printing problems and paper cutting problems may occur There are two reasons for this restriction as the follows The area on the print head where the paper does not pass be worn out since the platen directly contacts the head The wear rate on the cutter blades differs between the areas where the paper passes and does not which can result in paper cutting problems However if the printer is new you can change the paper width from narrow to wide Rev B General Specifications Appendix A 5 Electrical Specifications Operating voltage 24 7 optional power supply EPSON 5 170 or PS 180 Pin assignments for the power connector Table A 2 Pin assignment for the power connector Pin Function 1 24V 2 GND 3 N C SHELL F G Dimensions and Mass
24. See page 3 13 Drive circuit One ofthe following was QO Check installation status of the detected interface circuit board 1 Print head thermistor Replace the head FFC See page 2 Level drive motor 3 13 c Approx 5 12 gt assembly Q Replace the thermal print head assembly See page 3 4 Replace the main circuit board unit See page 3 13 Replace the interface circuit board See page 3 11 Rev B Troubleshooting Guide 2 7 Test Points on the Printer Mechanism Before you replace the main circuit board to see if the printer is repaired you need to check the printer mechanism If the motor or the coils are shorted replacing the main circuit board will not fix the problem The following explains how to test the motors and coils Table 2 6 Test points on the printer mechanism Name of Mechanism Part Name Intemal Hement Function Where to Check Normal Status Thermal Cutter motor sub DC brush motor Autocutterdrive Remove the cable There is mechanism assembly connector continuity assembly connected to Aproxinately CN8 on the main 38 3 8Q circuit board Test between and Paperfeed 4 phase stepping Receipt paper Remove the cable Approximately motor motor feed connector 2 6 Q per connected to phase x 5 CN9 on the main E 3 om _ circuit board Test g between pin 1 and pin 2 and between pin 3 and pin 4 2 8 Troubleshooting Guide Rev B C onfid
25. TM L90 Service Manual NE Detector Assembly 1 Remove the NE detector lead wire from the hook on the label paper holder 2 Remove E1 type E retaining ring 3 Remove the NE detector adjustment screw by rotating it with a coin 4 Remove the 1 hex nut and the NE detector assembly 5 Remove the NE detector lead wire from the hook of the NE detector holder and remove it from the micro switch connector 6 Remove the NE detector lever by lightly pressing the two keys inside 7 Remove one S7 screw 8 Remove the micro switch screw NE d 1 PS 2 N1 1 ine t SZ SS Pd 1 gt NE detec Rev C Disassembly and Assembly 3 43 Install using the following steps 1 Affix insulating tape on the NE detector lead wire as shown in the photo below This process is necessary only if the original NE detector lead wire has insulation tape affixed Insulating tape 2 Install the micro switch by aligning one key with the hole in the NE detector holder and secure with one S7 screw 3 Install the NE detector lever by pressing the two keys inside 4 Connect the NE detector lead wire to the micro switch connector and hook it to the NE detector holder 5 Install the NE detector assembly by placing it temporarily facing the left slanting diagonally 6 Fitthe N1 hex nut and install the NE detector adjustment screw Rotate the NE detector adjustment screw with a coin unti
26. which is located on the paper cutter cover assembly with G 36 Lubricate halfway around the cutter motor gear located on the paper cutter cover assembly and the reduction A C gear with G 36 3 40 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual 11 12 13 14 15 Rev C Adjust the position of the cutter driving gear so that the triangle mark on the cutter driving gear becomes visible through the hole in the paper cutter cover assembly Install the paper cutter cover assembly onto the cutter frame assembly N CAUTION Do not pinch the lead wire between the paper cutter cover assembly and the cutter frame assembly Tighten one manual cutter screw at on the previous page Install the manual cutter by aligning the two holes in it with the two dowels on the paper cutter cover assembly Tighten the two manual cutter screws at 1 on the previous page Disassembly and Assembly 3 41 LED Holder and Cover Plate Spring 1 Pullout the LED holder assembly from the label paper holder while pressing both claws inside 2 Remove the cover leaf spring Label paper holder Cover leaf spring Install using the following steps 1 Pressin the cover leaf spring into the label paper holder 2 Install the LED holder assembly Then pass the lead wire through first and then insert the LED holder assembly into the label paper holder 3 42 Disassembly and Assembly Rev C C onfide ntia
27. Height Approx 203 mm 7 99 Width Approx 140 mm 5 51 Depth Approx 148 mm 5 83 Weight Approx 1 9 kg 4 19 Ib not including paper Appendix A 6 General Specifications Rev B C 9 entia TM L90 Service Manual Environmental Conditions Temperature Operating 5 45 23 113 F See the figure below Storage 10 50 14 122 F except for paper Humidity Operating 10 90 RH See the figure below Storage 10 90 RH except for paper RH 90 H 34 C 90 80 L PIU POPE EE ELEM VON AES 40 65 60 Operating Relative humidity environment range 45 C 50 40 20 10 peche 0 0 10 20 30 40 50 gt Ambient temperature Rev B General Specifications Appendix A 7 Drawer Kick out Connector Pin assignments Table A 3 Drawer kick out connector pin assignments Pin Number Signal Name Direction 1 Frame GND 2 Drawer kick out drive signal 1 Output 1 3 Draweropen close signal Input 1 6 4 AV 5 Drawer kic k out drive signal 2 Output 6 Signal GND 24V isalways output through pin 4 during poweron Interfaces Various interface boards EPSON UB series except for the UB P02 can be used Buttons and Switches Power switch The power switch non locking push switch on the right part of the front face of the unit turns the printer on or off You c
28. PHASE OUTA 120 EN 20 85 D rs RP6 PF 20 20 20 20 TM L90 Service Manual Appendix F 19 EPSON SEIKO EPSON CORPORATION Printed in Japan
29. RNE TM L90 Service Manual Appendix F 14 Co Logic Power Block Drawing Number 3 I F Circuit Block Drawing Number 4 Rev B dentia 71 FZ1 1 2 121 5 820 V24S 1 2 2 vec OUT 1 2 VIO 1 2 4 5 6 8 20 23 24 4 pz j ZH COMP 55 NH H do FB GND i 65 4 021 2273 M z d 2076 czi Rz 825 lt 071 a J M e tz cud NN 74 212 T 2071 4 1 Uz2 oee vBUS gt VBUS 12202223 3 8 RESET GND 29 IFRST cze i nIFRST 20 7j q J al 2 0215 QMzi Hi RZ5 CYzi z al 1 M ud e CZ8 0213 EA T 26 1 2 nRESET nRESET nRESET 120 4 vio o e 3 5 UY2B 20 HOST RTS lt BY4 tame 1 LE CLKIN DTR RY8 1 2 20 IF CLKIN DTR W T BLOCKS CLKINDTR 1 CY502 CY500 o UY2A a 1 HIBSEL TUIBSEL 1 d Hg 20 1 2 1 Sb 9 gt RY19 9 RY14 RY13 RY20 RY23 RY15 RY10 VIO 9 evi E ASI oe RY18 RYT7
30. Wo ow 4 4 7 J RY16 gt 77 M oa a E al Rys 1 2 CTS 20 IFCTS 4 CIS 1 20 IF DET Br 2 DE 20 CLKREQ nCLK_REQ 1 RY121 2 TXD 20 IF 50 TD 1 20 IRD i BY111 2 RXD ID eid 20 IF N25RES RY2 1 2 25 RES i 5 RES 1 20 IF DSRRES 1 DSR_RES 1 CYsoi E DMY1 5 o 777 gt IF_PWRON 8 4 QMY1 4 21 1 2 HUS 1 20 IFHCTS TM L90 Service Manual Appendix F 15 DK Driver Block Drawing Number 5 A C Driver Block Drawing Number 6 Rev B DKDSt 1 20 DKS DK 81 20 DK 1 Di 2 DMKt vio RK5 2 1 6 20 DK 2 5 1 I e DKD EN DKD EN 20 aka DK5 s 4 PT DK P 20 DKP 4 4 RK6 4 La AA 2 2 3 aq DD V24S RK7 y am LLL AAN 2 9 L5 kp 1 lt E 1 2 3 4 6 20 22 23 24 GPS24 V24 ER vio CA4 CA3 QMA3 QMA1 4 2 Mo 10 1 3 7 P 4 1 2 1 ACM 20 2 7 2 m tn TOE ru oM
31. assembly See page 3 4 3 Replace the main circuit board unit See page 3 13 Paperfeed failure Thermal Printing 1 Check that the roll paper is properly loaded See page 7 6 Label Printing 2 Replace the main circuit board unit See page 3 13 3 Replace the receipt paperfeed motor See page 3 34 Drawer kick operation failure 1 Replace the main circuit board unit See page 3 13 2 Replace the Sub circuit board assembly See page 3 20 Missing characters misprinted characters font 1 Check the setting for serial communication conditions by Self breakdown test See page 2 4 You can change the setting with the DIP switch 2 ormemory switch See page 6 10 Also you can set with the Printer Status function in the TM Printer Service amp Support Utility See the TM Printer Service amp Support Utility Operatation Guide 2 Replace the interface cable See page 6 11 ERROR LED is lit Close the roll paper coversecure When it is flashing see page 2 5 Rev B Troubleshooting Guide 2 3 Confidential How Use the Self test There are two types of self tests L Print tests Print Tests Testing the Thermal Printer Execute this test using the following procedure Table 2 2 Running the thermal printer print test Step 1 Operation Tum the powersupply ON while pressing the FEED button and continue to push the FEED button untill ERROR LED is li Printer Oper
32. can contaminate the heating elements and affect proper operation Do not open the roll paper cover during printing The printer mechanism may fail 7 2 Handling Rev B C 9 entia TM L90 Service Manual Precautions on Paper Handling CAUTION Thermal paper containing Na K or CL ions etc can adversely affect the heating elements of the thermal head Be sure to use thermal paper that meets the paper specifications described in Appendix A General Specifications Thermal paper starts to color at around 70 C 158 FJ Take care to protect unused and printed thermal paper against the effects of heat light and humidity which can cause the paper to color and characters on the paper to fade Lj Take the roll paper out of the printer when you will not use the printer for a long time in an environment of high temperatures and humidity When the printer is not used for one week or more it is recomended not to leave the thermal paper between the platen and the print head Part Names Power switch nn 1 Cover open M Control panel En _ Table 7 1 Part names and functions Roll paper cover Name Function Roll paper cover Open to insert or remove roll paper Cutter cover Remove when the roll papercoverdoesnot open Do notopen this normally Power switch Tumson or off power Coveropen lever Used to open the roll papercover Control panel Includes LEDs for showin
33. circuit board unit to see if the printer is repaired See page 3 13 if The printeris repaired analyze the defective part by referring to Main Circuit Board Unit Test Points See page Appendix F 6 Replace the autocutter unit Paperlayout eror Label paperorthe black markis Confirm if the erorhappened by not detected orthe paper the jammed paperwhile printing If layout of the paperinstalled in so that remove the jammed r the printerand the setting of the paper Afterthen close the roll paper layout defined by the papercover tum it off and then GS Ecommand do not match tum iton again Perform the threshold value setting for detectors See Chapter 4 Check if the label paperorthe black mark paper installed in the printerisa cause of the problem Check ifthe paperlayout of the paperinstalled in the printer and the setting of the paperlayout defined by the GS Ecommand match Checkforpaperdustorforeign particles attached to the LED holder assembly and the black mark paperdetectorcircuit boa rd assembly Replace the LED holderassembly Replace the black mark paper detectorcircuit board assembly Roll papercoveropen enor Printing is not performed QO Close the roll paper cover tum it when an emorthat can possibly due to a coveropen off and then tum it on again recoveris selected 1
34. emor the rol papercoverisopened automatic ally recoverable by ESC while printing recoverable emor POS command Rev B Installation 6 15 Confidential Customized Values Table 6 9 Customized values Function Select NV user memory capacity Selection 1KB 64KB 128KB 192KB Select NV bit image memory capacity None 64KB 128KB 192KB 256KB 320KB 384KB Select paper width 38 mm 39 mm e 80 mm 43 stepsin increment of 1 mm except forthe size from 71 mm to 79 mm Select number of division forhead energizing Undivided energizing Two part energizing Three part energizing Four part energizing Select print density x 0 7 x 0 75 x O 8 x 0 85 x 0 9 x 0 95 x 1 0 x 1 05 x 1 1 x 1 15 x 12 x 1 25 x 1 3 x 1 35 x 1 4 Select papertype mono orcolor Single color Two colors Select print speed Print speed level 1 Print speed level 9 Serial Communication Conditions Table 6 10 Serial communication conditions Function Selection Baud rate 2400 bps 4800 bps 9600 bps 19200 bps 38400 bps 57600 bps 115200 bps Parity None Odd Even Flow control DTR DSR control XON XOFF control Data length 7 bits 8 bits 6 16 Installation Rev B C 9 entia TM L90 Service Manual Chapter 7 Handling Safety Precautions N WARNING 9 Shut down your equipment immediately if it produces smoke a strange odor or unusual noise
35. feed motor when the cover unit is closed drives the reduction gear to rotate the platen Thermal paper is fed if it is rolled up on the platen With the thermal paper pinched between the platen and the thermal print head the printing is performed by heat generation in the heating element of the thermal print head Rev B Overview of the Mechanisms Appendix B 3 Thermal Print Head The thermal print head consists of a head chip that includes the heating element a driver IC that controls each dot of the heating element a thermistor that detects the temperature of the thermal print head radiation plate and connector Radiation plate Connector Principles of Thermal Printing When the print signal energizes a corresponding dot of the heating element with the specified pulse the dot heats up to a high temperature and dissolves the color forming ingredient of the color forming layer on the thermal paper that is contacting the dot When the transparent color forming layer is dissolved at room temperature it generates color When the temperature cools down it is fixed again to the thermal paper side thus forming printing The color can be set to various colors by changing the formulation of chemicals used for the color forming layer but the popular thermal paper is the one that forms the color black Depending on the paper type environment and printing conditions part of the dissolved color forming layer may be deposited on the
36. position Then align the two dowels on the frame assembly with the two slits in the autocutter unit 2 Setthe autocutter unit to the user s position partial cut or full cut To select partial cut adjust the dowel to the position marked P To select full cut adjust the dowel to the position marked F Dowel 3 Secure the autocutter unit with the two S4 screws Q Note When tightening the screws do not deform the frame assembly This can decrease the sharpness of the cutter O Do not tighten the autocutter unit when the dowels are not properly engaged This can also decrease the sharpness of the cutter 3 22 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Thermal Print Head CAUTION 9 This job may be performed only after turning off the printer waiting for Rev C approximately 10 minutes The thermal print head assembly may be hot and otherwise you might get burned When performing this job anti static measures such as wearing a grounded wrist band Failure to do so may result in thermal print head failure Do not touch the print head portion that appears like a black line and the adjacent areas in the thermal print head assembly Touching this area may result in thermal print head failure When the thermal print head assembly is contaminated or has a deposit of foreign particles wipe it off with a cotton swab moistened with alcohol While holding the two
37. 1 AC e 1 5 I amp 1 8 914 x J 77 5 4 1 ELLE 00 20 E aai iil RA 49 A A 4 gi M 7 RAS 2 E lt 4 77 TM L90 Service Manual Appendix F 16 C entia TM L90 Service Manual Power SW Controller Block Drawing Number 8 RS30 RS31 20 veain xean 3 ar V240UT p V24OUT 3 5 20 aj cst RS1 RS2 RS27 zi 051 052 2 lt al 4 2 4 19 2 _ 051 54 J RS3 RS5 o rz nes RS26 lt al eH om 20 osm lt 4 4215 ass 1 psw lt __ PS PWRON 4 msi 8 9 e 2 pHa 4 lt 4 D SS cuu RS10 TES s 4 cs2 al 5 al A te H tw e DMS4 DMS5 l4 al PUE m E OM d 4 d n D SS QMS2 75 oss 5 lOFF_CTRL 1 20 DSW1 1 DSWi 1 4 77 77 exl N US1A al CS6 77 DMS6 E 2 AW 1 e RS9 EY RS8 4 hn c
38. 222 224008520 592 Aries Roa 1 MFS A oz 5 52 5557 5 5554 4 gt 22 658860050002 99 Wy MFS 20 nULCE 858852285 330952329 9995 koog 22 992225222 229200277 E 533 e nes eo 2 WW T PREP pne 2 2 52 RA Ap nRESET 858888885 5552 g HATS I 5 m 2 nPGMCE M lt lt lt lt gt lt lt lt lt HOLK2 HRSA oA Lote 1 ERED gt PTED 2 Tm ss 2352 2 2 Ane Annas TATE is THB 2 R ae 2222 ws RAE ATIS 2 nLOAS Rr ATSB H Hos ie ATI T i a 157 n ATS ATI Anar Amm 2 Do HL gt ARE HRDATA pm TIT 2D toyota VOD VSsu3 XHAru A 2m co ARI ATi IE 2 T are e DAGEK ATi An E s ATIS A10 RPM ADS gt ca RPM 03453 ATID e 22 204 ae RPM 2 nm 2 05 ADS RPM PHBI nw 22 206 4 RPM 2 ae 2 207 ABL RPM PHAT 22 A16 Vssu7 4 vss Xat oar Res c 20 2 be As EPSON J A18 apan Xin 2 Dio AE P ATPGCE oe Se 23 2 Dn AT57 01 06 Res It SNSIN12 i AT Aither RCR_IOSNSIN11 RPM 2 2 012 CES nCE17 RCR PHB2 TT PR PRET 2 013 ADSL 15 RCR PHBI ABA PAS 2 Di4 T 9 ip VbD2 PHA A 205 Rtgs nCEBnCEtAnFASS RCR 1 noermcetannase vssu2 ATE nCEG I SNSINTO i p ATE
39. 60 Covertape TAPE COVER 1 Accessory 162 Autocutter unit AUTO CUTTER UNIT 1 163 Platen assembly PLATEN ASSEMBLY 1 164 Paperfeed roller shaft holder SHAFT HOLDER PAPER FEED ROLLER 1 165 Bottom plate PLATE LOWER 1 166 Cover detectorassembly COVER DETEC TOR ASSEMBLY 1 167 Manual cutter MANUAL CUTTER 1 169 Holder auxiliary plate PLATE HOLDER AUXILIARY 1 170 Spacer guide shaft SHAFT SPAC ER GUIDE 1 171 Spacerguide plate PLATE SPAC ER GUIDE 1 172 Hinge spacer SPAC ER HINGE 2 173 Label paperspacer SPAC ER LA BEL 1 Accessory 174 Paper outlet guide G UIDE PA PER OUTLET AA 1 Accessory 175 Paperoutlet tape TAPE PAPER OUTLET 1 Accessory Rev C Parts List Appendix D 7 Table D 2 Reference number list Ref Name for service manual Name for price list Q ty Note 178 SpacerB SPAC ER B 2 179 Mini c lamp MINI CLAMP 1 180 Shield plate PLATE SHIELD 1 201 Main circuit board unit MAIN CIRC UIT BOARD UNIT 1 202 VF circuit board unit CIRCUIT BOARD UNIT 1 205 Paperfeed motor MOTOR PAPER FEED B 1 206 NE detectorlead wire LEAD WIRE N E DETECTOR 1 207 Head FFC FFC HEAD 1 208 Switch circuit board FFC FFC SWITC H CIRC UIT BOARD 1 209 Sub circuit board assembly SUB CIRCUIT BOARD ASSEMBLY 1 210 Switch circuit board assembly SWITCH CIRCUIT BOARD ASSEMBLY 1 211 Ferrite core FERRITE CORE 1 213 BM paperdetectorcircuit boa rd CIRCUITBOARD BM PAPER DETECTOR 1 assem
40. Confidentia Service manual TM L90 senes Issued date Issued by 401392002 EPSON C onfide ntia TM L90 Service Manual Revision Table Rev Page Description Rev all pages Newly authorized Rev B viii Add the information of the related documentation Reason forchange The Service amp Support Tool isrelease 1 1 Add the powersupply unittype in the specificationsand configurations Exclusive extemal power supply unit PS 175 North America only or PS 180 power supply packaged specification only Extemal power supply unit Model PS 180 and PS 170 Reason forchange Missing information 2 2 Added the sentence below to the explaination Paperis jammed inside the printer Please confirm to be attached the holder guide sheet 82 and D 183 when the paperisjammed in spite of doing the above steps Referto Appendix D 12 Reason forchange The parts Holder guide sheet C 182 and Holderguide sheet D 4183 were provided in orderto preventthe paperfrom jamming Add the before servicing and diagnosing failures Reason forchange To make the explanation easerto understand 2 3 Change the Troubleshoting Fliowc harts to the simptomsand solutions Reason forchange To make the explanation easerto understand 2 5 Add the explanation to the paperlayoutemor thatisthe automatically recoverable emorsofthe Troubleshooting using the E
41. D AA 1 132 Feed spacer SPAC ER FEED 1 133 Cover rotation shaft SHAFT C OVER TURNING 2 134 Switch panel holder HOLDER SWITC H PANEL 1 Appendix D 6 Parts List Rev C Table D 2 Reference number list TM L90 Service Manual Ref Name for service manual Name for price list Q ty Note 135 Feed sheet SHEET FEED A 1 136 Main case assembly CASE MAIN ASSEMBLY AA 1 139 Cuttercover COVER C UTTER AA 1 140 RubberfootA RUBBER FO OTA 4 141 Connectorcover COVER CONNECTOR AA 1 142 Frame Lassembly FRAME LASSEM BLY A 1 144 NE detector lever LEVER N E DETEC TOR 1 145 NE detector holder HOLDER N E DETEC TOR 1 146 Micro switch MICRO SWITCH 1 147 Thermal print head assembly THERMAL PRINT HEAD ASSEMBLY C 1 148 Manual cutter screw SC REW M ANUAL CUTTER 3 149 Cutter frame assembly FRAME C UTTER ASSEMBLY 1 150 Papercutter cover assembly COVER PAPER UTTER ASSEM BLY B 1 151 Cutter motor sub assembly MOTOR C UTTER SUB ASSEM BLY 1 152 Roll paper coverassembly COVER ROLL PAPER ASSEMBLY BA 1 153 Spacer 3X4X4 SPAC ER 3XAXA F ZN 3 154 DIP switch cover COVER DIP SWITCH 1 155 Handling label LABEL O PERATIO N BA 1 156 Label paperplaten holder HO LDER LABEL PLATEN 1 157 Power switch cover COVER POWER SWITCH AA 1 Accessory 158 Switch panel label LABEL SWITC H PANEL BA 1 Accessory 159 Rubber foot C RUBBER FO OT C 4 1
42. RROR LED Reason forchange Missing information 2 6 Add the below explanation to Autocutterermor thatisthe automatically recoverable emors of the Troubleshooting using the ERROR LED Checkthe cutter motor sub assembly see page 2 8 Replace the motorand the main circuit board unit if the cutter motor sub assembly hasbeen shorted See page 3 39 3 13 Replace the main circuit board unit to see if the printerisrepaired See page 3 13 If the printer is repaired analyze the defective part by referring to Main Circuit Board Unit Test Points on page appendix F 6 Reason forchange Missing information 2 8 Add the test points on the printer mechanism Reason forchange Because of changing chapter2 3 17 Add the inslating tape to fix femte core 3 37 Add two spacerson the illustration Confidential ii Page 4 1 Description Add the papertypesfororiginal and specified paper Reason for change To make the explanation easerto understand 6 10 Add the note about the setting forserial communication conditions 6 13 Changed the explanation forthe Capacity of the receive buffer thatisthe function forthe memory switch1 2 old Capacity of the receive buffer large OFF new Capacity of the receive buffer 4KB OFF old Capacity of the receive buffer small ON new Capacity of the receive buffer 45B ON Reason forchange To m
43. Test Eoc ations tmb LIAE Bec i Ro a Parts ha yout zu Ree uen eese ota Paral bes Rind Main Circuit Board Unit 223 GRE ua tuU BES EE AREA cat Switch Circuit Board Assembly AGA OE eS Sub Circuit Board Assembly 2 welt oO M pem eke IR e ERA o E GA NR Circuit Board Diagrams 5 cocer UU S Rupees quad seres erede Main Circuit Board 1 of 3 Drawing Number 1 Main Circuit Board 2 of 3 Drawing 2 Main Circuit Board 3 of 3 Drawing Number 20 iv Rev B C onfide ntia TM L90 Service Manual For Safe Repair and Maintenance Work Key to Symbols The symbols in this manual are identified by their level of importance as defined below Read the following carefully before handling the product N WARNING You must follow warnings carefully to avoid serious bodily injury N CAUTION Observe cautions to avoid minor injury to yourself damage to your equipment or loss of data Q Note Notes have important information and useful tips on the operation of your equipment Safety Precautions Maintenance Repair Inspection Rev B N WARNING 2 Be sure to use the designated type of fuse for the circuit board
44. Use of a different type result in fire Lj Remove the power cord and all other cables from this product before disassembly or reassembly to prevent electrical shock To prevent the possibility of electrical shock do not perform maintenance repair or inspection during a thunderstorm Shut down your equipment immediately if it produces smoke a strange odor or unusual noise Continued use may lead fo fire or electric shock Immediately unplug the equipment Only disassemble this product as described in this manual Do not make modifications to the unit Tampering with this product may result in injury fire or electric shock Be sure to use the specified power source Connection an improper power source may cause fire or shock Never insert or disconnect the power plug with wet hands Doing so may result in severe shock Confidential CAUTION When mounting or replacing the paper roll be careful not to touch the manual cutter because it is sharp can injure you This product contains other metal parts with sharp edges in addition to the cutter Touching these parts also may cause injury Parts on the circuit board may become hot during operation Therefore wait approximately 10 minutes after turning the power off before touching them 2 Note that the thermal print head and paper feed motor become very hot during normal operation creating the danger of burn injury Be sure to wait fo
45. ake the explanation easerto understand Rev B 6 15 Add the felow explanation for select paper withs 43 steps increment of 1 mm except for the size from 71 mm to 79 mm Reason forchange To make the explanation easerto understand 7 3 Add the explanation for Precautions on paper handling When the printer is not used forone week or more it isrecomended not to leave the thermal paperbetween the platen and the print head Reason forchange Missing information AppendixA Add the explanation forthe papertypesfor original and specified paper To ensure print quality be sure to use the specified paper old Label paper new Lavel paper with black mark Lavel paper without black mark Reason forchange Missing information Appendix D The partsbelow were newly provided spacer Sheet holder guide C Sheet holderguide D Confidential TM L90 Service Manual Rev Page Description Rev C Discontinued parts Sheet holder guide Ref 176 Sheet holder guide C Ref 182 Sheet holder guide D Ref 183 Sheet holder guide D CN Sheet holder guide 3 26 46 52 The new parts Spacer Thermal Head is added on Thermal Print Head So the following illustration is changed Before change After change Spacer Thermal Head 3 25 52 Added the explanation about the method of installing the head new type as Important Note About Installing Thermal P
46. al can damage the head Lj Do not touch the thermal head or radiation plate Printing can cause them to become very hot 1 Power off the unit and open the roll paper cover If you cannot open the roll paper cover see the previous section 2 Remove the jammed paper Please confirm to be attached the holder guide sheet C 182 and D 183 when the paper is jammed in spite of doing the above steps Refer to Appendix D 12 Before Servicing Pages vi to viii at the beginning of this manual provide precautions you should observe to perform work safely and the necessary information to service this product safely Always read that information before starting your work Diagnosing Failures Use one of the following methods to identify the area where a failure occurred 4 See Table 2 1 for diagnosing failures by the symptom of the problem 4 See Table 2 3 on page 2 5 for diagnosing failures from the ERROR LED code See Table F 5 on page Appendix F 7when the failure is on the main circuit board unit Q Note The explanation of how to use the self test is on page 2 4 The explanation of power on self checks is on page appendix F 4 2 2 Troubleshooting Guide Rev B C onfide ntia TM L90 Service Manual Symptoms and Solutions This explains how to find the source of a problem using the symptom The numbers in the Checkpoints column indicate the order to use to check the problem If you cannot determine the cause of the problem af
47. al information SEIKO EPSON MAKES NO OTHER WARRANTIES CONCERNING THE CONFIDENTIAL INFORMATION OR ANY OTHER INFORMATION IN THE DOCUMENT INCLUDING WITHOUT LIMITATION ANY WARRANTY OF TITLE OR NON INFRINGEMENT Seiko Epson has no liability for loss or damage arising from or relating to your use of or reliance on the information in the document You may not reproduce store or transmit the confidential information in any form or by any means electronic mechanical photocopying recording or otherwise without the prior written permission of Seiko Epson Your obligations under this Agreement are in addition to any other legal obligations Seiko Epson does not waive any right under this Agreement by failing to exercise it The laws of Japan apply to this Agreement Cautions No part of this document may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior written permission of Seiko Epson Corporation The contents of this document are subject to change without notice Please contact us for the latest information While every precaution has been taken in the preparation of this document Seiko Epson Corporation assumes no responsibility for errors or omissions Neither is any liability assumed for damages resulting from the use of the information contained herein Neither Seiko Epson Corporation nor its affiliates shall be liable
48. an use the DIP switches to enable or disable the power switch Panel Button Feed FEED button Type Non locking push button Function Feeds paper The paper cannot be fed if 1 roll paper end detector detects no paper 2 cover is open Q Note The ESC c 5 command enables or disables the panel button When disabled the button will not function Appendix A 8 General Specifications Rev B C 9 entia TM L90 Service Manual DIP Switches and NV Memory For explanations of the DIP switches and the NV memory see Chapter 6 Installation Indicators Panel LEDs Power POWER LED Green ON Power is stable OFF Power is not stable Paper roll end PAPER OUT LED Red On The paper roll near end or real end is detected Off Paper is loaded normal condition Blinking Waiting for the self test print to continue Or itis waiting for the macro execution command Table A 4 PAPER OUT LED blinking pattem State PAPER OUTLED Blinking Pattem Recovery Conditions Waiting for self test printing to PAPER OUT continue ormacro execution ready state Approx 320 ms Pressing the PAPER FEED button continues self test printing or executesa macro Error ERROR LED Red On Offline except during paper feeding using the FEED button self test printing and the error state Blinking Error See the section Error types and processing in Chapter 2 Off Normal condition
49. assemble the parts 1 Attach the insulating tape on the new thermal print head assembly as shown below then lubricate with G 45 along the surfaces on both ends of the head assembly Insulating tape 2 Attach the head FFC to the connector of the thermal print head assembly 3 Placethe thermal print head assembly in its installation position inside the printer 4 Insert the two head holder springs onto the two dowels on the spring holder plate by rotating them Head holder springs Spring holder plate 5 Insert the two head holder springs into the groove in the thermal print head assembly 6 While holding the two head holder springs so they do not fly out install the spring holder plate N CAUTION Be sure to hold the two head holder springs while installing the spring holder plate Otherwise the head holder springs may suddenly fly out creating the danger of eye injury 7 Adjust the two head holder springs so they are perpendicular with the thermal print head assembly 8 Attach the autocutter unit in its installation position At this time align the two dowels on the frame assembly with the two slits in the autocutter unit Reo C Disassembly and Assembly 3 7 9 Settheautocutter unit to the user s position partial cut or full cut To select partial cut adjust the dowel to the position marked P To select full cut adjust the dowel to the position marked F Dowel 10 Secure the autocutter unit w
50. at the protrusion on the switch faces the position marked on frame R Install the center frame Then route the lead wire of the paper feed motor forward Align two dowels on the center frame with two holes in the frame L assembly Install frame R Tighten one S4 screw at 2 Install frame strengthening plate R Tighten one 54 screw at f 3 32 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Front Frame 1 Remove 54 screw 2 Remove frame strengthening plate L 3 Remove the front frame Frame strengthening plate L Install in the reverse sequence of removal Rev C Disassembly and Assembly 3 33 Paper Feed Motor 1 Remove two W1 washers and one motor ground plate by removing three 1 nuts 2 Slide out the paper feed motor from the hole in the frame L assembly 3 Remove the three paper feed motor dampers from the paper feed motor 4 Remove the three spacers from inside the three paper feed motor dampers N1 Motorground plate Spacer Paperfeed motor damper Paper feed motor Paperfeed motor damper Install using the following steps 1 2 Insert the three spacers into the three paper feed motor dampers Insert the motor dampers into the three holes in the frame L assembly Install the paper feed motor To do this insert the motor shaft into the cutout in the frame L assembly then insert the three screws on the motor into the holes in the three paper feed mot
51. aten assembly PLATEN ASSEMBLY 1 163 Powerswitch cover COVER POWER SWITCH AA 1 157 Accessory Reduction gear C GEAR REDUCTION C 1 115 Reduction gearD GEAR REDUCTION D 1 116 Roll paper coverassembly COVER ROLL PAPER ASSEM BLY BA 1 152 Rubber footA RUBBER 4 140 Rubber foot C RUBBER FO OT C 4 159 Screw S1 C B P TIE 3X10 F ZN S01 Screw S10 C C S SCREW S10 Accessory Screw S2 SC REW 3X8 F ZN S02 Screw S3 5 REW 4X12 F ZN 503 Screw 54 5 SCREW 504 Screw 55 C B S SCREW S05 Screw S6 C P S O SCREW S06 Screw S7 C B B TITE SC REW S07 Screw S9 C B SCREW 509 Shield plate PLATE SHIELD 1 180 Spacer SPACER 3x4x4 3 153 SpacerB SPACER B 2 178 Spacerguide plate PLATE SPAC ER GUIDE 1 171 Spacer guide shaft SHAFT SPAC ER GUIDE 1 170 Spacer 3X4X4 SPAC ER 3X4X4 F ZN 3 153 Spring holder plate PLATE SPRING HOLDER 1 113 Sub circuit board assembly SUB CIRC UIT BOARD ASSEMBLY AA 1 209 Switch circuit board assembly SWITCH CIRCUITBOARD ASSEMBLY AA 1 210 Switch circuit board FFC FFC SWITC H CIRC UIT BOARD 1 208 Switch panel holder HOLDER SWITC H PANEL 1 134 Switch panel label LABEL SWITC H PANEL BA 1 158 Accessory Switch screw SC REW SWITC H 1 2 105 Tension plate spring SPRING TENSION PLATE 2 123 Thermal print head assembly THERMAL PRINT HEAD ASSEMBLY C 1 147 Rev C Parts List Appendix D 5 Reference Number List Table D 2 Reference number list
52. ation The printer will print the status of the printer settings Afterward the autoc utter will cut the roll paperand the PAPER OUTLED will flash Press the FEED button after the PAPER OUTLED flashes The print test will be executed When the print test is completed the printer will print completed The printer will enter the normal printing mode when the test isended Q Note You can interrupt the test print by pressing the FEED button during the test To continue press the FEED button again 2 4 Troubleshooting Guide Rev B Confidential Troubleshooting Using the ERROR LED TM L90 Service Manual You can learn the cause of a failure by checking the ERROR LED code The following table shows problems and solutions to repair the printer Numbers in the Solutions column indicate the order to use to check the problem If you cannot determine the cause of the problem after checking all the solutions listed go back to Table 1 1 earlier in this chapter Automatically recoverable errors Automatically recoverable errors are not abnormalities Table 2 3 Automatically recoverable errors Eror ERROR LED Blinking Pattem Print head temperature enor Approx 320 msec Description The temperature of the print head is extremely high Recovery Recovers automatically when the print head cools Roll paper coveropen enor
53. bly ASSEMBLY El E ring E1 RETAINING RING E2 E ring E2 RETAINING RING N1 Nut N1 HEXAGON NUT S01 Screw S1 C B P TITE 3X10 F ZN S02 Screw S2 C C P TITE SC REW 3X8 F ZN S03 Screw S3 5 REW 4X12 F ZN 504 Screw 54 5 SCREW S05 Screw S5 C B S SCREW S06 Screw S6 C P S O SCREW S07 Screw S7 SC REW S09 Screw S9 C B SCREW S10 Screw S10 C C S SCREW Accessory W1 Plain washer W1 PLAIN WASHER Appendix D 8 Parts List Rev C Reference for Screw Types Head side X Head top Standard Screws Table D 3 Standard screw types E Body TM L90 Service Manual Head top C Cross Head side P Pan Body Stite B tite P tite 0000000 Washer assembled S Spring lock washer TT S P1 S P2 SP3 S P4 Spring loc k washer plain washer O Outside toothed lock washer P1 P2 P3 PA Plain washer O P1 Outside toothed washer plain washer C d Rev C Parts List Appendix D 9 Special Screws Table D 4 Special screws Overview Ref 101 105 148 Appendix D 10 Parts List Rev C TM L90 Service Manual OS y J l Up 0 AV X KY E Q y N AX R Le
54. cept for the UB P02 and 503 Overview of Electric Circuits Appendix F 5 Confidential Test Points Test points on the main circuit board After a main circuit board unit failure one basic method for diagnosing the cause of the problem on the main circuit board unit is to check the power supply line Use the following table to check the power supply line First check step number 1 and proceed to the next step if that is not the problem Table F 5 Checking the power supply line Power source Terminal name Testterminal Parts terminal Normal value Power source for logic Semiconductor switch ON 051 C 15V circuit DC Semiconductor switch OFF 24V Powersource for logic circuit VIO VIO UZ 4 5V Power source for logic circuit VBUS UZ 35 3 3V VBUS Power source for logic circuit GND OV GND Power source for 24V operated components Q1 D 24V mechanisms printer mechanism Drive powersource Q1 ON Paperfeed motor Rotating REF PF 0 81 1 36V Halted 0 0V Powersource for I F CN6 45 24V board Power source for UK1 pinz3 24V drawer Appendix F 6 Overview of Electric Circuits Rev B Confidential Test Point Locations Test Point Locations Side A GND REF RF Q1 VIO UK1 051 022 Rev B TM L90 Service Manual a R38 gt gt VBUS CN6 ES cea FE I Sra i
55. ch circuit board FFC from the switch circuit board assembly 2 Remove two S2 screws 3 Remove the switch circuit board assembly by spreading the two hooks of the switch panel holder Y Cover detector lead wire Switch circuit board FFC Install in the reverse sequence of removal Rev C Disassembly and Assembly 3 19 Confide Sub Circuit Board Assembly Remove two S6 screws 1 2 Remove the sub circuit board assembly by pulling it up diagonally and out Sub circuit board assembly Install in the reverse sequence of removal Rev C 3 20 Disassembly and Assembly C onfide ntia TM L90 Service Manual Autocutter Unit 1 Users may choose between partial cut and full cut by adjusting the autocutter unit to the desired position Check the part shown below to see if the autocutter is set to full cut or partial cut When you install the autocutter unit return the unit to the user s position The dowel positions are marked P To select partial cut adjust the dowelto the position marked P To select full cut adjust the dowelto the position marked F 2 Remove the two 54 screws 3 Remove the autocutter unit Autoc utter unit Q Note When you need to disassemble or assemble the autocutter unit further see page 3 39 for instructions Rev C Disassembly and Assembly 3 21 Install with the following steps 1 Attach the autocutter unit in its installation
56. cifications of the unit Describes major mechanisms of the unit Provides information about tools required for maintenance and repair Lists service parts and gives an exploded view of the unit Shows a lubrication drawing of the unit Provides electric circuit diagrams and explanations about major elements vii Confidential Related Documentation Documents related to the TM L90 are listed below Documentation Related Documents Name of document Description TM Service amp Support Utility User s This manual is written forthe person that repairsoradjusts of the TM L90 Manual 1 TM L90 User s Guide This manual is written forthe operator of the TM L90 TM L90 Developer s Guide This manual is written for users who are designing TM L90 TM Service amp Support utility is to use for repairing the TM printer The utility has the function below It uses for repair of the TM L90 and adjustment The repairment means to change the print head autocutter main circuit board unit etc Communication test self test and test print can be performed Setting for the memory switch or customized value be performed The error history information saved on the memory that a printer has when a printer is repaired can be reffered to It can check that sensors are operating by using the demand of real time status Sequence peculiar to a printer such as a paper layout setting can be performed The ne
57. ck Length Label Width of label 80 mm 43 15 60 mm 42 36 38mm 1 5 Monocrome 25 1 ENTLA080090 ENTLA060090 ENTLA038090 labelpaper 025 025 025 stock 51 mm 2 ENTLA080090 ENTLA 0600900 051 51 76mm 3 ENTLA080090 ENTLA060090 076 076 102 mm 4 ENTLA080090 ENTLA060090 102 102 Two color 25mm 1 ENTLA080090 060090 ENTLAO38090 label paper 025 025 025 stock 51 2 ENTLAO80090 060090 051 051 76 mm 3 ENTLAO80090 ENTLAO60090 076 076 102 mm 4 080090 ENTLAO60090 102 102 Q Note To ensure the print quality be sure to use the specified paper Appendix A 2 General Specifications Rev B Specified original paper Paper roll size Paper roll core Rev B TM L90 Service Manual The following original paper types can be used Monochrome thermal paper TF60KS E Paper thickness 75 Nippon Paper Industries Co Ltd TF11KS ET Paper thickness 145 Nippon Paper Industries Co Ltd TF50KS E Paper thickness 65 um Nippon Paper Industries Co Ltd PD160R Paper thickness 75 paper Mfg Co Ltd P350 Paper thickness 62 Kanzaki Specialty Paper USA KF50 Paper thickness 62 um KANZAN Spezialpapiere GmbH Germany Two color thermal paper PD750R Paper thickness 75 paper Mfg Co Ltd Roll diameter Maximum 90
58. cuit board unit is comprised of circuits used to control the CPU memory mechanism drive unit detectors and power supply It forms the nucleus of the control system for the TM L90 CPU z 9 yis T us WIS 29 S i 9299 ME bor oo E 7 ES TED aisi Font ROM Elo ste eroe oon Tw uj Program gt 242 ROM ses E RR s Appendix 2 Overview of Electric Circuits Rev B Confidential TM L90 Service Manual The table below lists the main elements of the main circuit board unit and their functions Table F 1 Main elements and their functions for main circuit board unit Rev B Signals on Block location diagram Description Functions CPU and U4 c CPU and custom logic I O ports peripherals 7 7 07 max 8M bit 512K 16 bit Program memory U8 4M bit 256K 16 bit DRAM U9 8M bit 512K 16 bit Font Memory X1 40 MHz System clock for U4 X2 25 MHz System clock for U4 Power F1 154004T 4A surge proof Printer power supply fuse suppl Q1 24V 24 VDC 1 7A Semiconductor switch for power supply to mecha nism QS1 Qg 424V OUT 24 VDC 1 7A Semiconductor switch for power supply to printer 24 1 Powersupply to drawer LH9 VH2 Power supply forthermal head VIO 5 VDC 1 5A Power supply to I O logic circuits 022 VBUS 3 3 VDC 0 15A Power supply to bu
59. d the platen is secured into place The platen gear attached to the lever shaft is engaged with the reduction gear on the print paper feed unit and can rotate the platen A proper load is applied to the cover unit by the leaf spring on the paper supply unit When an operator manipulates the lever button while the cover unit is closed the lock between the cover open lever and the print paper feed unit is released and the cover unit opens slightly Then the cover unit can be fully opened by the operator Although the cover open lever and the lever button are installed onto a single lever shaft they can move individually allowing the cover unit to be closed without manipulating the lever button Appendix 2 Overview of the Mechanisms Rev B C onfide ntia TM L90 Service Manual Print Paper Feed Unit The print paper feed unit consists of various frames thermal print head head holder mechanism paper feed motor reduction gear and cover open detector Thermal print head Head holder mechanism Frame R Reduction gears Paper feed motor Circuit board frame The right and the left frames supporting the thermal print head can be installed or removed together with the paper supply unit and provide the locator for the paper feed roller shaft holder The circuit board frame holds the main circuit board that controls the printer mechanism The cover open detector detects if the cover unit is closed or open Rotating the paper
60. de GUIDE LABEL 1 126 Label paperholder HO LDER LA BEL 1 120 Label paper platen holder HOLDER LA BEL PLA TEN 1 156 Label paperspacer SPACER LABEL 1 173 Accessory LED holder assembly HOLDER LED ASSEMBLY 1 121 Lever button BUTTO N LEVER AA 1 130 Lever shaft SHAFT LEVER 1 129 Logo plate LOGO PLATE AB 1 102 Main case assembly CASE MAIN ASSEMBLY AA 1 136 Main circuit board unit MAIN CIRCUIT BOARD UNIT 1 201 Manual cutter MANUAL CUTTER 1 167 Manual cutter screw SC REW M ANUAL CUTTER 3 148 Micro switch MICRO SWITCH 1 146 Mini cla mp MINI CLAMP 1 179 Motor ground plate GROUND PLATE MOTOR 1 118 NE detectorholder HOLDER N E DETEC TOR 1 145 NE detectorlead wire LEAD WIRE N E DETEC TOR 1 206 NE detectorlever LEVER N E DETEC TOR 1 144 Nut N1 HEXAGON NUT N1 Papercutter coverassembly COVER PAPER UTTER ASSEM BLY B 1 150 Paperfeed motor MOTOR PAPER FEED B 1 205 Paperfeed motordamper DAMPER PAPER FEED MOTOR 3 117 Paperfeed roller shaft holder SHAFT HOLDER PAPER FEED ROLLER 1 164 Paperholding roller ROLLER PAPER HOLD 8 122 Paperoutlet guide GUIDE PAPER OUTLET AA 1 174 Accessory Appendix D 4 Parts List Rev C Table D 1 Alphanumeric list TM L90 Service Manual Name for service manual Name for price list Q ty Ref Note Paperoutlet tape TAPE PAPER OUTLET 1 175 Accessory Plain washer W1 PLAIN WASHER W1 Pl
61. detection for the diameter of the roll paper core To adjust the amount of remaining paper 1 Open the roll paper cover and remove the paper roll 2 Loosen the detector adjustment screw with a coin or similar tool 3 Adjust the detector by sliding the tab in the direction shown below Vertical installation Horizontal insta llation or wall mounting The table below shows the diameter at which the near end detector is triggered Note that this figure is a calculated value and there may be some variations depending on the printer Table 1 Detection point of roll paper near end Detector position Trigger point diameter of paper roll 1 setting Approx 36 mm 11 42 2 setting Approx 41 mm 11 61 4 Tighten the detector adjustment screw 5 Check to be sure that the detecting lever moves freely 6 Replace the paper roll 6 4 Installation Rev B C onfide ntia TM L90 Service Manual Setting the Paper Roll Cutting Method You can choose between partial cut and full cut by adjusting the autocutter unit to the desired position The steps below show the setting of the cutting method Q Note Once the printer is used do not change the cutting method from partial cut to full cut because of the difference in the wear rate on the blades between the areas where the paper passes and the paper does not pass which can result in a paper cutting problem However if the printer is new you can cha
62. e ntia TM L90 Service Manual Chapter 3 Disassembly and Assembly Notes for Assembly and Disassembly Always observe the following precautions when disassembling and assembling the printer N CAUTION Cj Cj Rev C Wear a grounded wrist band when handling the internal circuit boards to prevent damage from static electricity When removing an internal circuit board place it on an anti static rubber sheet or similar surface to prevent damage from static electricity Be careful not to subject the circuit boards to shock or vibration because this may damage them Do not touch the circuit board or cable terminals with your hands to prevent contamination that may result in a malfunction Always remove the power supply unit from the printer before working Power is flowing to the internal circuit boards even if you turn the printer off at The power supply switch You may damage the printer if you work while the power supply is still attached Remove all peripheral equipment connected to the printer before starting work Do not perform any work that is not described in this chapter Doing so may result in injury or damage to the printer Do not touch the FPC or FFC pins Hold circuit boards only by their edges Disassembly and Assembly 3 1 How to Read this Chapter Structure of this Chapter This chapter consists of the items listed in Table 3 1 Reading from the top item to the bottom in sequence allows users to disa
63. e to set this equipment on a firm stable flat surface Product may break or cause injury if it falls Do not use in locations subject to high humidity or dust levels Excessive humidity and dust may cause equipment damage fire or shock Do not place heavy objects on top of this product Never stand or lean on this product Equipment may fall or collapse causing breakage and possible injury To ensure safety please unplug this product prior to leaving it unused for an extended period Be aware that the thermal print head and its supporting parts become very hot Be sure not to touch these parts Touching them may cause burns Precautions on Handling the Printer Observing the following operational precautions protects the unit against damage CAUTION Do not turn off the printer while the autocutter is working Doing so leaves the cutter blade exposed which prevents the roll paper cover from opening Do not pull out paper when the roll paper cover is closed Except for a paper jam do not tum the knob when the cutter cover is open Turning it accidentally may expose the cutter blade which prevents the roll paper cover from opening The heating element of the printer mechanism s thermal head and the ariver IC are easily damaged Never allow these components to come into contact with metal or other hard objects Never touch the printer mechanism s thermal head s heating elements with your hands Doing so
64. ecified with NV conditions switches memory 3 Handshake XO N XO FF DTR DSR 4 Bit length 7 bits 8 bits 5 Parity check Yes No 6 Panty selection Even Odd 7 Baud rate selection See the next table 8 Table 6 3 Baud rate selection Transmission speed Switch number bps 7 8 2400 ON ON 4800 OFF ON 9600 ON OFF 19200 OFF OFF bps bits per second Note About the setting for serial communication conditions When DIP switch 2 is ON you can set for serial communication conditions by the DIP switch In case of OFF it doesn t enables to set by the DIP switch but by the memory switch Then you need to run the Memory Switch Setting Mode For non serial interface models Table 6 4 DIP switch settings for non serial interface models Switch number Function ON OFF 1 Power switch function Disabled Enabled 2 Reserved Fixed to off 3 Reserved Fixed to off 4 Reserved Fixed to off 5 Reserved Fixed to off 6 10 Installation Rev B C onfide ntia TM L90 Service Manual Switch number Function ON OFF 6 Reserved Fixed to off 7 Reserved Fixed to off 8 Reserved Fixed to off Rev B Installation 6 11 Confidential Connecting Cables N WARNING Make sure you use the EPSON 5 170 or PS 180 power supply Using an incorrect power supply may cause fire or electrical shock N CAUTION When connecting or disco
65. eduction gear C 3 Remove reduction gear D 11777 Reduction gear D g S Reduction gear C E Install using the following steps 1 Lubricate the two reduction gear shafts with G 45 in a line shape 2 Install reduction gear D Q Note When installing reduction gears C and D see the drawing and install them in the correct directions 3 Install reduction gear C 4 Secure with one E ring E2 3 28 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Rev C Lubricate half of reduction gear C with G 45 Lubricate the contact area of frame R and the front frame with G 36 Lubricate the contact area of the frame L assembly and the front frame with G 36 Lubricate the contact area of the right side of the center frame and the circuit board frame with G 36 Lubricate the right side of the center frame and the groove in frame R with G 36 Frame Lassembly frame Disassembly and Assembly 3 29 Label Paper Holder 1 Remove the lead wire of the LED holder assembly from between the center frame and the front frame Remove the S1 screw Pull the label paper holder out straight along the grooves in the frame L assembly and frame R Install using the following steps 1 Pass the lead wire of the LED holder assembly through to the front between the center frame and the front frame Press in and slide the label paper holder straight along the groove
66. er leaf spring PLATE SPRING CO VER 1 124 Coveropen lever LEVER C OVER OPEN 1 128 Cover rotation shaft SHAFT CO VER TURNING 2 133 Covertape TAPE COVER 1 160 Accessory Cutter cover COVER C UTTER AA 1 139 Cutter frame assembly FRAME C UTTER ASSEM BLY 1 149 Cutter motor sub assembly MOTOR C UTTER SUB ASSEM BLY 1 151 NE detector adjustment screw SC REW DETEC TOR ADJ USTM ENT 1 101 DIP switch cover COVER DIP SWITCH 1 154 E ring E1 RETAINING RING El E ring E2 RETAINING RING E2 FEED button BUTIO N FEED AA 1 131 Feed sheet SHEET FEED A 1 135 Feed spacer SPAC ER FEED 1 132 Ferrite core FERRITE CO RE 1 211 Fixed blade FIXED BLADE 1 114 Fixed blade holder spring SPRING BLADE HOLDER 1 104 Frame L assembly FRAME L ASSEMBLY A 1 142 Rev C Parts List Appendix D 3 Table D 1 Alphanumeric list Name for service manual Name for price list Q ty Ref Note Frame R FRAME R 1 107 Frame strengthening plate L PLATE FRAME STRENG THEN L 1 110 Frame strengthening plate R PLATE FRAME STRENG THEN R 1 109 Front frame FRAME 1 108 Handling label LABEL O PERATIO N BA 1 155 Head caution seal SEALCAUTION HEAD B 1 103 Head FFC FFC HEAD 1 207 Head holder spring SPRING HEAD HOLDER 2 125 Hinge cover COVER ARM AA 1 127 Hinge spacer SPACER HINGE 2 172 VF circuit board unit F CIRCUIT BOARD UNIT 1 202 Label papergui
67. erve the instructions on lubricants and lubrication points described in Chapter 3 Disassembly and Assembly The table below lists the lubricants used in this product Table 5 1 Lubricants Type Name Grease G 15 G 36 G 45 Cleaning Recommended Cleaning It is recommended that you perform the following cleaning during repair Observe the precautions in the front of Chapter 3 before cleaning Table 5 2 Recommended cleaning Checkpoints Whetherany dust orforeign material adheresto thermal print head Cleaning method See Cleaning the thermal head section in this chapter Whetherany paperdust orforeign material adheres to LED holderassembly Remove the dust orforeign material with a cotton swab lightly dampened with water Whetherany paperdust orforeign material adheres to BM paper detector circuit board assembly Remove the dust orforeign material with la cotton swab lightly dampened with water Whether any paperdustorforeign material adheres to platen assembly Clean the platen with a cotton swab orcloth lightly dampened with water Whetherany paperdustorforeign materialis present onthe cutterblade Wipe off with dry cloth orcotton swab Whetherany paper dust dirt orforeign material adheresto oris insde other parts Clean thoroughly using a small vacuum cleanerfor computer equipment Rev B Maintenance Inspection Lubrication and Cleaning 5 1
68. fications Tip size 5 mm The tightening torque forthe nut should be between 34 3 to 39 2 Nc m 3 5 to Purpose Remove and install the paper feed motor Source Use commercially available product 4 0 kgc m Crosshead screwdriver 0 1 2 Disassembly and assembly Use commercially available product Flathead screwdriver Disassembly and assembly Use commercially available product Tweezers Disassembly and assembly Use commercially available product Wrist strap Disassembly and assembly Use commercially static electricity countermeasure available product E ring holder 1 5 3 Disassembly and assembly Use commercially available product Tools Appendix C 1 Rev B TM L90 Service Manual Appendix D Parts List Alphanumeric List Table D 1 Alphanumeric list Name for service manual Name for price list Q ty Ref Note Autocutter unit AUTO CUTTER UNIT 1 162 Auxiliary holder plate PLATE HOLDER AUXILIARY 1 169 BM detector holder HOLDER BM DETECTOR 1 112 BM paperdetector circuit board CIRCUITBOARD BM PAPER DETECTOR 1 213 assembly ASSEMBLY Bottom plate PLATE LO WER 1 165 Caution seal SEALCAUTION C 1 106 Center frame FRAM E C ENTER 1 119 Circuit board frame FRAME CIRCUITBOARD A 1 111 Connectorcover COVER CONNECTOR AA 1 141 Cover detector assembly COVER DETEC TOR ASSEM BLY 1 166 Cov
69. g the fixed blade see the drawing below to check the installation direction N CAUTION The fixed blade is sharp Handle it with care Fixed blade f Tension plate spring Tension plate spring Rev C Disassembly and Assembly 3 47 3 Pullout the lever shaft and remove one E2 type E retaining ring Cover open lever 5 Remove the lead wire of the BM black mark detection set board from the hooks of the platen holder Hooks 3 48 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual 6 Remove two S1 screws and remove the BM detector holder When you assemble the BM detector holder make sure the shield plate fits into place as shown below NG This portion of the shield plate goes up slightly 7 Pull the lead wire of the BM paper detector circuit board assembly out of the hole in the platen holder Hole Rev C Disassembly and Assembly 3 49 8 Remove one 51 screw then remove the shield plate BM paper detector circuit board assembly 3 50 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual 10 Remove the fixed blade holder spring by lifting up the claw Q Note The claw of the fixed blade holder spring is hooked to the platen holder When removing it do not pull forcibly as this may result in deformation When installing it make sure the claw has been hooked Fixed blade holder spring 11 Remove the two E2 type E retain
70. g the printerstatus and a button for feeding paper See the net illustration for details Rev B Handling 7 3 LEDs and Button Table 7 2 LEDs and button Name Function POWER LED Lights when the powerison and isoff when the poweris off ERROR LED Off when the printerisonline lights when the printeris offline and flashes when an emoroccurs PAPER OUTLED Lights when roll paperis nearly out FEED Button Feedsthe roll paper Handling Powering the unit ON or OFF There are two methods to power this printer ON or OFF Using the power switch With the power switch disabled Each method is used for the following purposes Table 7 3 Purpose of each method of power ON OFF Method Power ON OFF using the power switch Description To powerthe printer ON orOFF using the power switch PowerON OFF with the power switch disabled To powerthe printer ON orOFF using the power breakerwhere the printer is installed or using the switch on the powerboxor wall outlet where the printeris connected In this case the program must execute the power off process using the DLE DC4 fn 2 command before tuming the printer power off 7 A Handling Rev B C 9 entia TM L90 Service Manual These methods can be selected by DIP switch 1 Table 7 4 Setting of DIP switch 1 Method DIP switch 1 PowerON OFF using the powerswitch OFF PowerON OFF with the power switch disabled ON
71. he printer is used do not change the paper width from narrow to wide Otherwise printing problems and paper cutting problems may occur There are two reasons for this restriction as follows The area the print head where paper does not pass can be worn out since the platen directly contacts the head The wear rate of the cutter blades is different between the areas where paper passes and does not pass which can result in a paper cutting problem However if the printer is new you can change the paper width from narrow to wide 1 When you want to set the roll paper width from 61 mm to 70 mm 2 4 to 2 76 break off the two claws on the spacer shown in the illustration below with your hands 2 Open the paper roll cover 3 Insert the label paper spacer so that the front edge goes through the notch then push down the spacer so that the hook on the spacer and the shaft align Rev B Installation 6 7 Confidential 4 Push the label paper spacer until you feel it click onto the shaft Check that the label paper spacer slides smoothly to the left and right 5 Slide the label paper spacer to the appropriate width You can use the ruler printed inside the printer aligning the inside edge of the spacer with the desired measurement 6 Tighten the spacer with the screw included with the spacer See figure above 7 Setthe NV memory for the desired paper width Attaching the Power Switch Cover N WARNING If a
72. he unit may fall or drop and may cause injury Do not place the printer in a location where it is exposed to excessive humidity or dust It may malfunction or cause fire Do not wire cables other than as instructed in this document Improper wiring cause malfunction or fire Installation Position This printer can be installed vertically horizontally or mounted on the wall If you change the installation position you also need to set the installation position of the roll paper near end detector Refer to the section Setting the Installation Position of the Roll Paper Near End Detector in this chapter Vertical Installation Place the printer with the paper exit facing forward E Rev B Installation 6 1 Confidential Horizontal Installation Place the printer with the paper exit facing upward When you install the printer horizontally perform the following steps 1 Attach the switch panel label as shown below POWER 5 e ERROR lt PAPER OUT E e Switch panellabell FEED a M 2 Ifthe autocutter is set to full cut attach the paper outlet guide using the paper outlet tape double sided tape as shown below paperoutlet guide paperoutlet tape Wy D paper outlet guide Q Note If you install the printer horizontally and choose full cut without attaching the paper outlet guide the cut paper falls inside the paper path which can result in double c
73. head holder springs so they do not fly out pull out the spring holder plate N CAUTION Be sure to hold the two head holder springs while removing spring holder plate Otherwise head holder springs may suddenly fly out creating the danger of eye injury Head holder springs Spring holder plate Disassembly and Assembly 3 23 2 Remove the two head holder springs from the spring holder panel by rotating them 3 Liftup the thermal print head assembly and remove the head FFC from the thermal print head assembly N CAUTION To prevent static generated failures keep the removed thermal print head assembly in an anti static bag or other suitable container Thermal print head assembly Head holder springs Spring holder plate 3 24 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Install using the following steps 1 Attach the insulating tape on the new thermal print head assembly as shown below then lubricate with G 45 along the surfaces on both ends of the head assembly 2 Insert the head FFC into the connector of the thermal print head assembly 3 Passthe head FFC through as indicated with the arrow in the drawing on the previous page and place the thermal print head assembly in the installation position 4 Insert the two head holder springs onto the two dowels on the spring holder plate by rotating them Head holder springs Spring ho
74. ice Manual 3 Users may choose between partial cut and full cut by adjusting the autocutter unit to the desired position Check the part shown below to see if the autocutter is set to full cut or partial cut When you install the autocutter unit return the unit to the user s position The dowel positions are marked F and P To select partial cut adjust the dowelto the position marked P To select full cut adjust the dowel to the position marked F 4 Remove the autocutter unit by removing the two S4 screws securing it Stand the removed autocutter unit against the front of the printer Autoc utter unit Rev C Disassembly and Assembly 3 5 5 While holding the two head holder springs so they do not fly out pull out the spring holder plate N CAUTION Be sure to hold the two head holder springs while removing spring holder plate Otherwise head holder springs may suadenly fly out creating the danger of eye injury Head holder springs Spring holder plate 6 Liftup the thermal print head assembly and remove the head FFC from the thermal print head assembly N CAUTION To prevent static generated failures keep the removed thermal print head assembly in an anti static bag or other suitable container Thermal print head assembly Head holder spring Spring holder plate Pd 3 6 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Follow the steps below to
75. ing rings and one paper feed roller shaft holder then remove the platen assembly Q Note When installing the paper feed roller shaft holder see the drawing and engage it to the platen holder in the correct direction Platen holder Paper feed roller shaft holder Platen assembly Install in the reverse sequence of removal Rev C Disassembly and Assembly 3 51 Important Note About Installing Thermal Print Head Please follow these instructions to install the new thermal print head correctly Note that the new head has a spacer on it 1 Cutthe plastic sheet with a cutting tool such as a cutter knife Be sure not to cut the surrounding parts 2 Install the new thermal print head in the correct position sheet spacer 3 52 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Chapter 4 Adjustment and Settings Threshold Value Setting for Detectors Perform this setting when you have replaced any of the following Items Requiring Setting holder assembly BM paper detector circuit board assembly Main circuit board unit Q Note If you do not perform this setting or perform it incorrectly the printer generates the paper layout error See the section Error types and Processing in Chapter 2 for the description of the error Follow the steps below to execute the setting 1 Install any of the following specified paper rolls for the detector setting
76. ith the two S4 screws Q Note e When tightening the screws do not deform the frame assembly This can decrease the sharpness of the cutter Do not tighten the autocutter unit when the dowels are not properly engaged This can also decrease the sharpness of the cutter 11 Install the cutter cover 12 Close the roll paper cover 3 8 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Disassembly and Assembly of the 190 First Level Cutter Cover Rev C 1 Open the roll paper cover 2 Remove the cutter cover by spreading area A of the main case assembly as shown below T Main case assembly Cutter cover Install in the reverse sequence of removal Disassembly and Assembly 3 9 Connector Cover 1 With the main assembly upside down remove the connector cover by pressing its rear section and unhooking the two claws onnector cover Claw Install in the reverse sequence of removal 3 10 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual I F Circuit Board Unit 1 With the main assembly upside down remove two 56 screws 2 Remove the I F circuit board unit VF circuit board unit Install in the reverse sequence of removal Rev C Disassembly and Assembly 3 11 Main Case Assembly 1 With the main assembly upside down remove two 55 screws and one 53 screw 2 Remove the main case assembly N CAUTION When insta
77. l the groove in it comes out of the N1 hex nut 7 Install one E1 type E retaining ring into one groove in the NE detector adjustment screw 8 Align the NE detector assembly straight and further tighten the NE detector adjustment Screw 9 Hook the NE detector lead wire to the label paper holder NE detector assembly NE detector lead wire 3 44 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Auxiliary Holder Plate and Side Plate Guide Shaft 1 2 Rev C Remove one S10 screw Disengage both projections located in the lower part of the auxiliary holder plate and pull out the auxiliary holder plate downward at an angle Remove the eight paper holding rollers Remove the two 1 type E retaining rings and pull out the side plate guide shaft Remove the spacer guide plate while pushing up one front claw of the label paper holder Paper holding rollers Paper holding rollers Label paper holder Disassembly and Assembly 3 45 Install in the reverse sequence of removal After you have installed the paper holding rollers lubricate with G 45 at the 16 points shown below la Wc is Wc db is G 45 G 45 lt Zoom up 3 46 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Third Level Platen Holder 1 Remove the fixed blade from the platen holder by raising the blade When installin
78. lder plate 5 Insert the two head holder springs into the groove in the thermal print head assembly 6 While holding the two head holder springs so they do not fly out install the spring holder plate N CAUTION Be sure to hold the two head holder springs while installing the spring holder plate Otherwise the head holder springs may suddenly fly out creating the danger of eye injury 7 Adjust the two head holder springs so they are perpendicular with the thermal print head assembly Q Note Please take care the following explanation to exchange the thermal print head with new type If the printer has the old thermal print head the plastic sheet that the head is installed on need to be cut Refer to Importaint Note About Installing Thermal Print Head on page 3 52 Rev C Disassembly and Assembly 3 25 Hinge Cover 1 Remove two S1 screws and one 52 screw 2 Remove the hinge cover by spreading the two hooks 3 Remove the feed sheet from the hinge cover 4 Remove the DIP switch cover from the hinge cover Install in the reverse sequence of removal 3 26 Disassembly and Assembly Rev C TM L90 Service Manual Confide Label Paper Guide Remove the label paper guide by raising it and pulling it out from the label paper holder groove Label paper guide Install in the reverse sequence of removal Disassembly and Assembly 3 27 Rev C Reduction Gears 1 Remove one E ring E2 2 Remove r
79. le or assemble the platen holder further see page 3 47 for instructions 4 Remove one F2 type E retaining ring and remove the FEED button 5 Remove the feed spacer from the FEED button Roll paper cover Feed spacer GN 4 FEED buton 0 Double sided adhesive tape side 3 36 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual 6 Peeloff spacer B Disassembly and Assembly 3 37 8 Remove the two hinge spacers from the roll paper unit When assembling make sure you insert the spacers in the direction shown below Hinge spacer Hinge spacer Install in the reverse sequence of removal 3 38 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Aufocutter Unit 1 Remove two manual cutter screws 1 2 Remove the manual cutter The manual cutter has a sharp blade Handle it with care 3 Remove manual cutter screw 2 4 Remove the paper cutter cover assembly 5 Remove switch screw 6 Remove the micro switch 7 Remove the lead wires of the micro switch and the cutter motor from the hooks 8 Remove the two S9 screws S Note When removing the screws near the paper cutter cover insert a screwdriver into the gap between the paper cutter cover and the cutter driving gear Do not damage the gear 9 Remove the cutter motor sub assembly Q Note When removing the cutter motor sub assembly pull it out
80. lea 6 1 Vertical Installation e uu a pec y ce RUE Reque eie dad eaa a d afe ed 6 1 Horizontal Installation 2 2 6 2 it Rev B C onfide ntia l TM L90 Service Manual WallMounting 2 ete oh n a ieee bee a ete EINER 6 2 Setting the Installation Position for the Roll Paper Near End Detector 6 3 Adjusting the Detecting Point of the Roll Paper Near End 6 4 Setting the Paper Roll Cutting Method 2 2 6 5 Setting the Paper Roll Width eb he UE SIRE ees 6 7 Attaching the Power Switch Covers crece e rh eere se to eei e aas eese Deeper re PUE 6 8 Setting the DIP Switches s eR Pi RR eere ee RN ehe tals 6 9 Location of the DIP switches 2 1 4 6 9 DIP switch settings Me Ele ta alee tine I RS alee des 6 10 Connecting Cables coe Rer ber Uer Che fees redire nee 6 12 Setting the NV Memory hil yr Rea Rena NG Aretha 6 13 Memory Switch Setting E IH A UE beer RS 6 13 Paper Layout Automatic Set
81. lling the case do not pinch the lead wire Doing so may cause failures Install in the reverse sequence of removal 3 12 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Main Circuit Board Unit 1 Rev C Remove the cutter lead wire from connector Then remove the insulating tape securing the lead wire When installing route the cutter lead wire as shown below and then fix with the insulating tape Front view Right side view all Cutter lead wire Insulating tape e Cutterlead wire Remove four S6 screws and remove the bottom plate See the illustration on the next page Remove lead wire from the connector on the main circuit board unit Remove four S6 screws See the illustration on the next page Q Note When tightening the four S6 screws tighten in the order 1 and 2 The other two places can be tightened in any order but should be tightened diagonally Remove the head FFC from connector C on the main circuit board unit Remove the three lead wires from the main circuit board unit connector in the order of D and Remove the switch circuit board from connector on the main circuit board unit Q Note When replacing the switch circuit board FFC note that the switch circuit board FFC is not bent when provided as a service part Bend it in the same way as the one that was installed into the printer When in
82. mm 3 54 Take up paper roll width 80 60 38 mm 3 15 2 36 1 5 with 0 5 1 0 mm 0 02 0 04 of tolerance Inside diameter 25 4 mm 11 Out side diameter 31 4 mm 1 24 Paper must not be pasted to the paper roll core General Specifications Appendix A 3 Autocutter Either of the following settings can be applied Table A 1 Autocutter settings Setting Description Partial cut cutting with one point in left Set by changing the autocutter edge left uncut unit position Full cut completely cut 5 Note Cj Once the printer is used do not change the cutting method from partial cut to full cut since the wear rate on the blades differs between the areas where the paper passes and where the paper does not which can result in a paper cutting problem However if the printer is new you can change the cutting method from partial cut to full cut If the printer is installed horizontally and the full cut is chosen attach the paper outlet guide Refer to Chapter 6 If it is not attached the cut paper falls inside the paper path which can result in double cutting a paper jam or cutter error Appendix A 4 General Specifications Rev B Paper Roll Supply Device Supply method Near end detector Detection method Paper roll core diameter Near end adjustment Paper width selection Q Note TM L90 Service Manual Drop in paper roll Micro switch Inside 25 4 mm 1
83. n accident occurs when the power switch cover is attached unplug the power supply cord from the outlet immediately Continued usage may lead to fire or shock You can use the power switch cover to make sure the power switch is not accidentally pressed Peel off the paper on the back of the power switch cover and attach it as shown in the illustration 6 8 Installation Rev B C onfide ntia TM L90 Service Manual For removal use a sharp edged object Power switch cover D If you want to turn on or off the power switch with the cover attached insert a sharp edged object into the hole in the power switch cover and remove portion 1 in the above illustration Setting the DIP Switches Location of the DIP switches A single set of DIP switches is located in the area shown below To access the DIP switches remove the DIP switch cover DIP switches DIP switch cover A Note About the DIP switch on the main circuit board When disassembling and assembling the printer you may notice a DIP switch on the main circuit board This switch is used only at the factory Always set this switch to OFF Rev B Installation 6 9 Confidential DIP switch settings For serial interface models Table 6 2 DIP switch settings for serial interface models Switch number Function ON OFF 1 Power switch function Disabled Enabled 2 Setting forserialcommunication To be specified with DIP To be sp
84. n again six times 4 Close the roll paper cover The printer runs the Paper Layout Automatic Setting Mode During the mode the printer checks the necessary information for the paper installed and stores it in the NV memory Memory Switches MSW 1 Table 6 6 Memory switch MSW1 Bit Function 0 off 1 1 Send poweron notification No Yes 2 Capacity ofthe receive buffer 4KB 45B 3 Conditions for BUSY Receive bufferfullor Receive buffer full offline 4 Data processing for receiving Prints Ignores emor 5 Automatic line feed Disabled Enabled 6 Reserved Fixed to off 7 Pin 46 selection of reset signal Not used Used 8 Pin 25 selection of reset signal Notused Used 6 14 Installation Rev B C onfide ntia TM L90 Service Manual MSW2 Table 6 7 Memory switch MSW2 Function 0 off 1 on Reserved Fixed to Autocutteroperation Disa bled Enabled Undefined Undefined Undefined Undefined Undefined Undefined MSW8 Table 6 8 Memory switch MSW8 Bit Function 0 off 1 on Undefined Undefined Undefined Undefined Undefined Feeding paperto the start Enabled Disa bled position during poweron Undefined 8 Selectthe type of error when Generate an Generate an
85. ng paper feed improve the paper feed pitch accuracy and ease the maximum load applied to the paper feed motor The paper detection LED works with the reflective photo detector on the platen holder and detects the several types of paper The paper detection LED is covered by a transparent resin to prevent the detector from being destroyed by static The NE detector detects the remaining amount of roll paper It can be set to perform detection at two points depending on the setting This detector can be rotated by loosening it with a coin and allows detection whether the TM L90 is installed vertically or horizontally The switch circuit board is installed onto the hinge cover and the printer settings can be configured with the DIP switches or FEED button even when the cover is open The printer status is shown with LEDs Rev B Overview of the Mechanisms Appendix B 5 Changing the paper width The unit can handle paper roll widths of 38 mm to 70 mm 1 5 to 2 76 when you install a paper spacer into the label holder by ba Appearance of paperspacer Paperspacerisattached to the label holder example Autocutter Unit The autocutter unit is installed into the print paper feed unit and consists of a movable blade cutter sub assembly motor movable blade position detector power transmission mechanism and frame Movable blade position detector Cutter sub assembly motor Power transmission mechanism Manual cutte
86. nge the cutting method from partial cut to full cut If the printer is installed horizontally and full cut is chosen attach the paper outlet guide See page 6 2 If it is not attached the cut paper falls inside the paper path which can result in double cuts a paper jam or cutter error 1 Open the roll paper cover 2 Remove the cutter cover by spreading area 4 of the main assembly case as shown below 3 Remove two 54 screws Rev B Installation 6 5 Confidential 4 Adjust the autocutter unit to the desired position To select partial cut adjust the dowel to the position marked P To select full cut adjust the dowel to the position marked F Dowel 5 Secure the autocutter unit with the two S4 screws Make sure the two dowels on the frame assembly engage the two slits in the autocutter unit Q Note When tightening the screws do not deform the frame assembly This can decrease the sharpness of the cutter Do not tighten the autocutter unit when the dowels are not properly engaged This can also decrease the sharpness of the cutter 6 Install the cutter cover 7 Close the roll paper cover 6 6 Installation Rev B C onfide ntia TM L90 Service Manual Setting the Paper Roll Width The TM L90 accommodates 80 mm 3 15 wide paper rolls with no adjustments For rolls from 38 to 70 mm 1 5 to 2 76 wide use the label paper spacer included with the printer Q Note Once t
87. nnecting the power supply from the printer make sure the power supply is not plugged into an electrical outlet Otherwise you may damage the power supply or the printer 9 Note To remove the DC cable connector make sure the power supply s power cord is unplugged then grasp the connector at the arrow and pull it straight out Power source connector Interface connector Drawer kic k out connector 6 12 Installation Rev B C onfide ntia TM L90 Service Manual Setting the NV Memory The functions shown below are assigned to the memory system used with this printer NV memory Customized values Memory switches e Select NV user memory capacity MSW1 Select NV graphics memory capacity e MSW2 Select paper width MSW8 Select number of division forhead energizing Select print density e Select papertype mono or color Select print speed Serial communication conditions Baud rate Type of paper size Data length Parity Flow control Paperlayout Normally you set the NV memory using the ESC POS command However some functions can be set using either the Memory Switch Setting Mode or the Paper Layout Automatic Setting Mode on the printer itself as described below Memory Switch Setting Mode The functions listed below can be set using the Memory Switch Setting Mode Table 6 5 Setup items in the memory switch setting mode I
88. or dampers Install two W1 washers and one motor ground plate Then make sure the ground plate touches the frame L assembly If you insert the ground plate in an incorrect way it does not touch the frame Tighten the three N1 nuts with the specified torque of 34 3 to 39 2 Ncm 3 5 to 4 0 kgcm in the order shown in the illustration above Make sure the motor ground plate is attached at the angle shown in the illustration above N CAUTION Tighten the three nuts with the specified torque If you overtighten these nuts the screws on the paper feed motor become loose when you loosen the nuts the next time 3 34 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Second Level Roll Paper Cover Unit 1 Remove one type E retaining ring and slide the lever shaft to remove the lever button Lever button 2 Remove the lead wires of the BM black mark paper detector circuit board assembly from the roll paper cover unit When assembling thread the wires as shown below Pass through the hole Hook with the clamp Rev C Disassembly and Assembly 3 35 3 Remove the three 51 screws and remove the platen holder N CAUTION When removing the screws near the platen gear take precautions against touching the gear with the screwdriver Do not use a screwdriver with a short handle and or thick shaft as it can easily touch the gear Touching the gear may damage it Q Note When you need to disassemb
89. paper detector circuit board assembly ammi os t 3 16 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual 3 Remove one S1 screw to release the ground wire of the BM paper detector circuit board assembly Ground wire 4 Disconnect the lead wire of the BM paper detector circuit board assembly from the switch circuit board assembly and remove the ferrite core When assembling pass the lead wire into the ferrite core twice so that you make one loop as shown below Ferrite core Connector Insulating tape wire make one loop Rev C Disassembly and Assembly 3 17 5 Remove the two E rings E2 6 Remove the two cover rotation shafts by pressing them inside 7 Remove the roll paper cover unit Then pull the lead wire of the BM paper detector circuit board assembly out through the clearance in the hinge cover Cover rotation shafts Roll paper cover unit Hinge cover To remove the roll paper cover unit position the cover unit as shown below and pull out the unit in the direction shown with the arrow in the illustration Roll papercoverunit Q Note When you need to disassemble or assemble the roll paper cover unit further see page 3 35 for instructions Install in the reverse sequence of removal 3 18 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Switch Circuit Board Assembly 1 Remove the cover detector lead wire and the swit
90. r Movable blade The autocutter unit s movable blade and the fixed blade attached to the cover unit cross each other and cut paper with the principle of scissors Appendix B 6 Overview of the Mechanisms Rev B C onfide ntia TM L90 Service Manual Opening the cover unit separates the two blades Closing the cover unit while the movable blade is in the standby position makes the fixed blade hit the frame portion of the autocutter unit and is set to the correct position against the movable blade The movable blade is always in the standby position and is moved to the intersecting direction against the fixed blade by various gears If paper is present it is cut between the movable and the fixed blades Then the movable blade returns to the standby position The movable blade position detector detects if the movable blade is in the standby position or not The power transmission mechanism is equipped with a one way clutch that cuts power transmission when the movable blade catches on foreign material or something Full cut and partial cut The paper cutting can be set to either of two methods full cut and partial cut by changing the autocutter installation position on the print paper feed unit Manual cut You can also use the manual cutter to cut paper manually Rev B Overview of the Mechanisms Appendix B 7 Appendix C Tools Table C 1 Tools TM L90 Service Manual Tool Torque limiting hexagon box driver Speci
91. r about 10 minutes after turning printer power off before beginning the maintenance repair or inspection Modular Connector Use the modular connector specifically designed for the cash drawer for this product Do not connect this connector to an ordinary telephone line Rev B Confidential About this Manual Aim of the Manual TM L90 Service Manual This manual was created to provide the information on printer maintenance and repair required by technicians who handle this work Contents of the Manual The configuration of the manual is as follows Chapter 1 Product Overview Chapter 2 Troubleshooting Guide Chapter3 Disassembly and Assembly Chapter 4 Adjustment and Settings Chapter 5 Maintenance Inspection Cleaning and Lubrication Chapter 6 Installation Chapter 7 Handling Appendix A Features and General Specifications Appendix B Overview of the Mechanisms Appendix C Tools Appendix D Parts list Appendix E Lubrication Points Diagram Appendix F Overview of Electric Circuits Rev B Describes features and configurations of the unit Explains troubleshooting to pinpoint the problem area by the symptom Describes disassembly and assembly of the unit Provides information about adjustment Offers information about periodic maintenance and inspection cleaning and lubrication of the unit Provides information about installation Gives information about handling Describes major spe
92. r supply packaged specification only External power su ly unit Model PS 180 and 5 170 Note Selections the table above may be added orchanged in the future dpi dots per 25 4 mm dots per inch Rev B Product Overview 1 1 C onfide ntia TM L90 Service Manual Chapter 2 Troubleshooting Guide Preparations for Troubleshooting Before troubleshooting check and if necessary correct the following point Roll paper cover does not open cover open lever does not move 1 Liftup and remove the cutter cover by inserting a flathead screwdriver or similar tool into the cutout in the main case assembly and spreading it in the direction of an arrow 2 Return the cutter blade to the normal position by rotating the autocutter knob in the direction of the arrow When it is returned to the normal position a triangle mark becomes visible through the hole in the autocutter frame le ae Main case assembly 3 Lift up the roll paper cover Q Note Besides a paper jam a foreign object such as a push pin can cause the autocutter to lock up If this is the case follow the same procedure described above to return the cutter to its normal position Do not open the cutter cover unless you find that the roll paper cover does not open Rev B Troubleshooting Guide 2 1 Paper is jammed inside the printer CAUTION Take care not to let metal objects come into contact with the thermal head Met
93. rint Head Appendix The part Spacer Thermal Head on ParsList and Exploded Diagram is deleted D 10 iii C onfide ntia TM L90 Service Manual CONRDENTAALITY AGREEMENT BY USING THIS DOCUMENT YOU AGREE TO ABIDE BY THE TERMS OF THIS AGREEMENT PLEASE RETURN THIS DOCUMENT IMMEDIATELY IF YOU DO NOT AGREE TO THESE TERMS This document contains confidential proprietary information of Seiko Epson Corporation or its affiliates You must keep such information confidential If the user is a business entity or organization you must limit disclosure to those of your employees agents and contractors who have a need to know and who are also bound by obligations of confidentiality On the earlier of a termination of your relationship with Seiko Epson or b Seiko Epson s request you must stop using the confidential information You must then return or destroy the information as directed by Seiko Epson If a court arbitrator government agency or the like orders you to disclose any confidential information you must immediately notify Seiko Epson You agree to give Seiko Epson reasonable cooperation and assistance in the negotiation You may use confidential information only for the purpose of operating or servicing the products to which the document relates unless you obtain the prior written consent of Seiko Epson for some other use Seiko Epson warrants that it has the right to disclose the confidenti
94. s in the frame L assembly and frame until it hits the stop N CAUTION When installing the label paper holder do not pinch the cables Tighten the S1 screw 3 30 Disassembly and Assembly Rev C C onfide ntia TM L90 Service Manual Circuit Board Frame 1 Remove four S4 screws 2 Remove the circuit board frame Insulating tape Install using the following steps 1 Affix insulating tape on the right side of the circuit board frame as shown in the photo above 2 Install the circuit board frame Then align the dowels on the circuit board frame with the holes in the frame L assembly and frame R 3 Tighten the four 54 screws See the drawing to locate the screw holes Rev C Disassembly and Assembly 3 31 Frame R and Center Frame 1 2 3 4 Remove one S4 screw 1 Remove frame strengthening plate R Remove 54 screw 2 Remove frame R Remove the center frame Remove one switch screw and remove the cover detector assembly from frame R Cover detector assembly Frame Lassembly 5 Geisha row 2 a Insulating tape Install using the following steps 1 Affix the insulating tape on the cover detector assembly as shown in the photo above This process is necessary only if the original cover detector assembly has the insulation tape affixed Install the cover detector assembly onto frame R and secure with one switch screw Then align the front and back so th
95. s7 3 4 77 m 4 279526 A FH 2145 20 PSW mE E 4 4 11016 DMS7 653 2 8529 20 PSW QMS4 a o al HS Rsg al 4 89145 d amp RS21 NS RS19 l ines RS16 9917 2 Wat 4 98205 4 1 cse 77 zE US2A 4 ed 3 7 3 42 AM P n 2j RS22 iom 510 RS23 2 1 USIB Wy T 1 QS14 77 ANE PLT zx 2 1 gt TRG 1 20 12 5 E 2 U2B 77 Rev B Appendix F 17 TM L90 Service Manual dentia Co Number 22 wing HEAD Driver Block Dra TH TM1 20 z T E T E 1 RH1 d AAA 2 LH1 LH9 TH 20 plv TH STB 20 TH CLK 20 9 1 20 elg AAA E RH3 RH6 moo m 6265 LH2 LH3 EEA 9 7TH LATCH 20 M TER REIS RH8 m gt 1 CEN e 1 2 DI Wd AA RR rol I t i i i i i i o x m zi Q 5 8 ae E 2 e 5 x er m Ta it i UUXPUPSES o pm RH10 LH5 i TH VH 20 RH11 _1 A eg AAA E ot RH13 N I d N p i ule Ed
96. slogic circuits Connectors CN6 I F BOARD Universal interface board UIB connector CN10 HEAD Connectorforthermal head unit connection front of the printer CN11 NE Connectorforpapernear end connection CN12 RE for TM T90 only CN13 Label photo Connector for transmission sensor photo connection CN4 SUB Connectorfor sub circuit board connection CN7 SWITCH Connectorfor switch circuit board connection CN8 Connector for autocutter unit connection front of the printer CN9 PF Connectorfor PF motor connection Switch 9 1 Power switch front of the printer Interfaces QK3 DKD 1 24 1 Drawer drive transistor output signal DKD 2 Mechanism QMA1 24 VDC 0 25 Driverand outputsignalforpush pull c utter drivers ACM motor UP1 UP2 24 VDC 0 7A Driver and output signal for PWM power PF A supply control of bipolarstepping motor PF forfeed mechanism PF B Overview of Electric Circuits Appendix F 3 Confidential Power circuit The power circuit generates three voltages 5 V 24 V and 3 3 V Each voltage is supplied to the circuits listed below Table F 2 Output voltages and their applications Voltage Level Application V e Logic circuit used mainly for circuits around CPU 24 V Print mechanism power supply Drawer kick power supply Interface circuit board unit power supply 3 3V Logic circuit used mainly for circuits around memory
97. ssemble all the serviceable parts Table 3 1 Structure of this chapter assembly of the TM L90 1st level Cutter cover 2nd level 3rd level Disassembly and Connector cover VF circuit board unit Main assembly case Main circuit board unit Disassembly and assembly of the printer mechanism Cable wiring Roll papercover unit Roll papercover unit Platen holder Switch circ uit board assembly Sub circuit board assembly Autoc utter unit Autocutter unit Thermal print head assembly Hinge cover Label paperguide Reduction gears Label paper holder assembly LED holder assembly and cover plate spring NE detector assembly Auxiliary holder plate and side plate guide shaft Circuit board frame Frame Rand center frame Front frame Paperfeed motor 3 2 Disassembly and Assembly Rev C Shortest Route for Disassembly of Major Parts The next diagram shows the shortest disassembly route of major parts Perform disassembly by TM L90 Service Manual following this diagram as well as explanations for the target item For the disassembly procedure of the thermal print head see page 3 4 Start Cutter cover Connector cover Thermal print head assembly I F circuit board
98. stalling hook the bent portion against the circuit board frame Remove the main circuit board unit Disassembly and Assembly 3 13 Confide Main circuit board unit Install in the reverse sequence of removal Rev C 3 14 Disassembly and Assembly C onfide ntia TM L90 Service Manual Disassembly and Assembly of the Printer Mechanism Q Note The term printer mechanism is used only for convenience in this document there are no parts in the actual product that use this name First Level Cable Wiring 1 Remove the lead wire of the LED holder assembly from one hook 2 Remove the lead wire of the paper feed motor from two hooks 3 Remove the NE detector lead wire from the hook on the frame L assembly When installing see the figure below and hook the NE detector lead wire onto the frame L assembly by wrapping around it twice N CAUTION When removing the lead wire take precautions against damaging the cable Lead wire of the LED holder assembly Lead wire of the paperfeed motor NE detector lead wire Install in the reverse sequence of removal Rev C Disassembly and Assembly 3 15 Roll Paper Cover Unit 1 Release the two tabs on the label paper guide from the roll paper cover unit Tabs Label paperguide 2 Remove the insulating tape that is securing the lead wire of the BM black mark
99. straight so not to catch the cutter motor gear in the hole in the paper cutter assembly cover Manual cutter Pa perc itercovei Manual cutter screw 1 assembly Manual cutter screw 2 lt lt inner side Disassembly and Assembly 3 39 Install using the following steps Reduction A C gear contactarea between the cutter worn gearand the paper cutter cover assembly 10 ong ole movable Install the cutter motor sub assembly Then see the drawing to insert it correctly so that the label side faces the right direction Tighten the two S9 screws Install the micro switch The switch must face the shaft side and one dowel on the back must align with the hole in the paper cutter cover assembly Hold the lead wire of the micro switch to the side of the cutter motor and secure it with the hook together with the lead wire from the cutter motor sub assembly Tighten one switch screw Lubricate two areas on the long hole in the movable blade in a line shape with G 15 The blade is located in the cutter frame assembly Adjust the position of the movable blade so that the round hole in the cutter frame assembly is visible through the long hole in the movable blade Lubricate halfway around the center of the contact area with G 36 between the cutter worm gear located in the paper cutter cover assembly and the paper cutter cover assembly Lubricate once around the cutter driving gear
100. tems Description Autocutter Enables ordisables the autocutter operation Paper Print density e Selects paper type mono orcolor Selects print density Basic serial interface Setsthe baud rate data length flow control parity settings Advanced interface Setsthe receive buffer capacity data processing for receiving error settings conditions for busy Interface reset signal Sets if the reset signal on the interface connectoris used or not used Paper width Sets paper width Rev B Installation 6 13 Confidential Follow the steps below to run the Memory Switch Setting Mode 1 Installa paper roll 2 With the roll paper cover opened turn the power on while pressing the FEED button And You need to hold down the paper FEED button continuously until the ERROR LED lights on release the paper FEED button once when the ERROR LED light on 3 Press the paper FEED button located inside the printer twice 4 Close the roll paper cover The printer prints the main menu and operation instructions 5 Follow the instructions for further operation to set the memory switches 6 Once the setting is finished the printer initializes and enters the normal state Paper Layout Automatic Setting Mode Follow the steps below to run the Paper Layout Automatic Setting Mode 1 Install the paper roll you want to use 2 With the roll paper cover opened turn the power on while pressing the FEED button 3 Press the FEED butto
101. ter checking the first item proceed to the next number Table 2 1 Symptoms and Checkpoints Symptom Checkpoints by Priority Powerdoesnot tum on 1 Check the power supply unit Check that 24V is coming out of Poweron self check is not completed the powersupply See page F 6 Or POWER LED does not light 2 Checkthe main circuit board unit See page F 6 3 Unplug the printer Then unplug each motororhead orFFC s connector from the main board one by one plug the printer backin and poweriton This will let you know if any motor has bumed out and ispulling down the power See page 3 13 4 Replace the I F circuit board See page 3 11 5 Replace the Sub circuit board assembly See page 3 20 There are missing dots Thema Printing 1 Clean the thermal print head assembly See page 5 2 in the print Label printing 2 Replace the thermal print head assembly See page 3 4 3 Replace the main circuit board unit See page 3 13 4 Replace the Head FFC See page 3 13 The print is thin Receipt Printing 1 Clean the thermal print head assembly See page 5 2 Label printing 2 Setting the memory switch See page 6 12 3 Replace the thermal print head assembly See page 3 4 4 Replace the main circuit board unit See page 3 13 Unevenness occursin the Receipt Printing 1 Clean the thermal print head assembly See page 5 2 concentration ofthe print Label printing 2 Replace the thermal print head
102. thermal printer head side In this case you need to clean the heat generating element of the thermal print head Data Input and Printing Serial print data input from DATA IN synchronizes with the CLOCK signal and is transmitted to the SHIFT REGISTER within the driver IC It is then recorded to the LATCH REGISTER within the driver IC on the LATCH signal timing turns on the gate with the STROBE signal and energizes the heating element The STROBE signal energizing pulse width is set properly depending on the voltage thermistor detected temperature and print speed to obtain the optimum print density There are two terminals for STROBE which can be driven with up to two parts by hardware Normal printing performs one part printing for printing speed and two part printing for high duty printing which causes a high voltage drop Appendix B 4 Overview of the Mechanisms Rev B C onfide ntia TM L90 Service Manual Paper Supply Unit The paper supply unit consists of the label holder paper detection LED NE detector and hinge cover Switch circ uit board inside Label guide Hinge cover Label holder NE detector Paper detection LED The label guide is attached to the label holder and interlocks with the cover unit This allows the TM L90 to receive paper roll in the correct position whether the unit is installed vertically or horizontally The guide rollers that receive the paper roll ease the load that occurs duri
103. ting Mode 6 14 Memory Switches pU ER P MeL SM Oe C phe el ee ence 6 14 Customized Values 1 4 0 6 16 Serial Communication Conditions 0 6 16 Chapter 7 Handling Safety Precautions Se eG Gd ua Kenia PE ad Spa FS E 7 1 Precautions on Handling the Printer 7 2 Precautions on Paper Handling ereire ete REEL er Y X rA Ye Id prassi xe eee eer 7 3 Part Names sete hot Sog LI be Had grt teo e tu fe pde ad 7 3 LEDs and B tton eere RI pe i acs heb oS ae qu rV WANA T ERE 7 4 Handling e eost eis 7 4 Powering ON or OBE 554 devo ue Peete Rr Wer ee ert ee ex PES 7 4 Loading the paper roll a LEEREN RD SUR URRRDREU CIN S EIE Red 7 6 Removing th roll paper RELIER Iu EIU ae ESTEE TIT ma OLTRE 7 7 Appendix A General Specifications Printing Specifications s ei had A 1 Paper Specifications aao ee eb epi eR A 1 exe AR ia dod E E a A 2 AJutocutter ice Cee ls
104. to the purchaser of this product or third parties for damages losses costs or expenses incurred by the purchaser or third parties as a result of accident misuse or abuse of this product or unauthorized modifications repairs or alterations to this product or excluding the U S failure to strictly comply with Seiko Epson Corporation s operating and maintenance instructions Seiko Epson Corporation shall not be liable against any damages or problems arising from the use of any options or any consumable products other than those designated as Original EPSON Products or EPSON Approved Products by Seiko Epson Corporation EPSON and ESC POS are registered trademarks of Seiko Epson Corporation Rev B 1 Confidential Contents For Safe Repair and Maintenance 2 v Key to Symbols thie yet Dake cede a RTI a epe Rede d t Safety Precautions on Maintenance Repair Inspection Modular Connector sits erac dud P pae Ve id Pad DEDI anda i vi About this Manual Rae aa er OUT VEM Ue drea ies vii Aim OF the Mafiual s vela EEUU A rema e edd vii Gontents of the Manual onis 12 emer Mee Uie ass aon hark se Da ebbe a ge eds vii Related Documentation ess un a a evi c s dE Ee PCR YER VARY viii Chapter 1 Prod
105. uct Overview Specifications and Configurations 1 1 Chapter 2 Troubleshooting Guide Prepar tions for Troubleshooting 2 224 RI Res GO o Ege ee ee AE Lire RE P reae 2 1 Befote sSelviclriQgi s oci TL Run T EL eM 2 2 Diagnosing Fall les e Ro th e ee ie bec Is OU 2 2 Symptoms andi Solutio Tis no ome cse wha yeaa Oy pes OR x etel eo e e e RU RR 2 3 How to Use the Self tesE xut vou Cn eee ha t eR ep E LE TTE E 2 4 Print Bests aaae ede ML aee Eun sa Seda eo C e t aeu ta dated 2 4 Troubleshooting Using the 2 5 Test Points on the Printer Mechanism 2 8 Chapter 3 Disassembly and Assembly Notes for Assembly and 3 1 How to Read this Chapter hee Les aude eden wade qo 3 2 Structure of this Chapter aie es See obey etre er Neve ea EY Ud T gis s 3 2 Shortest Route for Disassembly of Major Parts 3 3 Representation of Small he esq E tede EH EUM be 3 3 Replacing the Thermal Print Head Assembly
106. uts a paper jam or cutter error However if the printer is installed vertically or partial cut is chosen the paper outlet guide is not necessary Wall Mounting The printer can be attached to the wall by using the wall hanging bracket WH 10 When you are going to use the printer by mounting it on a wall see the installation manual that comes with the wall hanging bracket 6 2 Installation Rev B C onfide ntia TM L90 Service Manual Setting the Installation Position for the Roll Paper Near End Detector This printer allows you to change the installation position for the roll paper near end detector using the following procedure Set the detector based on whether your printer is installed vertically or horizontally 1 Loosen the detector adjustment screw with a coin or similar tool Turn the screw at least 3 or 4 times 2 Push the detector lever in until it touches the back of the hole 3 While pushing the detector lever turn the tab until the lever clicks into place in the desired hole Hole for vertical installation or wall mount Hole for horizontal installation Detector adjuat screw Detector lever 4 Secure the detector adjustment screw 5 Make sure the detector lever moves smoothly Rev B Installation 6 3 Confidential Adjusting the Detecting Point of the Roll Paper Near End Detector Below are two reasons for the roll paper to require an NE detector adjustment 2 To adjust the location of
107. west firmware released can be written in memeory that a printer has It is released and multilingual fonts can be written in the memory that a printer has corresponding to multilingual e If a repair wizard is used it can be made to complete by operating a series of work which is needed for part exchange according to a screen If you have any questions please contact SD Technical Support Mail Address Sd techsupt exc epson co jp viii Rev B Chapter 1 Product Overview TM L90 Service Manual The 190 is a line thermal printer for POS systems that can print on roll paper or a ticket TM L90 external view Specifications and Configurations The TM L90 is configured by combining features from the list below Table 1 1 Specifications and configurations Features Interface type Selection 501 RS 232 UB PO2II IEEE1284 bidirectional parallel etc Description Use EPSO N approved interface board Font type Alphanumeric Use the EPSON approved main circuit Japanese board Simplified C hinese Traditional Chinese Thai Korean Autoc utter setting Partial cut For details about how to set partial or full Full cut cut see Chapter6 Installation Paper width selection 38 60 80 mm etc For details about how to set the paper width see Chapter 6 Installation Power supply unit type Exclusive external power supply unit PS 175 North America only or PS 180 powe

Confidential

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