EpsonメーカーEPL-5500の使用説明書/サービス説明書
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EP SO N T ER MIN AL PR IN T ER EPL - 5500 SE RV I CE MANUAL EPSON 40 054 31.
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NOTICE All r ights r eserve d. Reproduction of any pa r t of t hi s manual in any form whats oever wi thout SE IKO EPSON ’s expre ss wri tten per missio n i s f orbidden. The contents of thi s m anual are s ubj ec ts t o c hange withou t not i c e. All ef forts ha ve been mad e t o ens ure th e accuracy of the cont ent s of this manual .
PR EC A UT IO NS Precauti onar y not ati ons throughout t he t ex t ar e cat egor ized relati ve t o 1 ) person al inju ry and 2) dam a ge t o equ ipm ent . DA NG ER S ignals a precautio n whi ch, if ignored, could result i n ser i ous or fatal person al injury .
SA FETY INFORMAT ION Th is printer is a page p ri nter w hich oper ates by means of a laser . There i s no possi bility of danger from t he laser, pr o vided the printer i s oper ated according to t h e i nstruc tions i n thi s m anual pr ovided.
Fo r Finland , Sw eden Users; VA RO ITU S Laitt een käyt tämin en m uulla kui n t ässä k ä yttöohjeessa m ai nitull a tav al la sa at - taa altistaa k äyt t ä jän tur vall isuusl uokan 1 yli ttäväll e näkym ät t öm älle laser - sä te iyll e.
Fo r Europe [Label i nsi de p r i nter] Th e f oll owi ng l aser saf ety label w il l be at ta ched i nside the pr inter as shown below. Fo r D e n mark, Fi nl and, Sw eden, an d N or way - v -.
PR EFA CE Th is manu al descr i bes funct ion s, t heo ry of electrical and mechanic al operations, m aintenance, and repair of E PL-5500. Th e i nstruc t ions and pr ocedur es i ncluded herei n a re i nt ended f or the ex perience rep air t echnici an, and at t e ntion shoul d be give n t o the pr ecauti ons on the pre c e ding page.
R EVI SI ON S HEE T Revisi on I ssue D at e Re visi on Page R ev. A O ctob er 06, 1995 1st i s sue R ev. B March 15, 1996 Revis e the w hole pages of the follow ing chapt ers: Chapter 1 Chapter 2 Chap.
Ch apt e r 1 G ener al De sc ri pti o n Ta ble of Co ntent s 1.1 FEATURES 1-1 1.2 SPECIFICATIONS 1-3 1.2.1 Basic Specifica tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.2.2 Electrica l Specifications .
1.5.7 Developing Ca rtridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36 1.5.8 Lower Pape r Cassette Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36 Lis t of Fi gur es Figure 1-1. Exte rior V iew o f the EPL-5 500 .
Rev. A 1-iii.
1 . 1 FEATURE S Th e EP SO N EP L-5500 i s n on-impact page pri nt e r t ha t com b ines a sem i -con ductor laser wi t h e lect r ophot ogr aphic tech nology. Thi s prin ter i s sm all and li ght , and featur es hig h- speed, h igh-resol ut ion pr inting.
Ta ble 1- 1 li s ts t he opt ional uni ts avai labl e f or t h e EP L- 5500. Table 1-1 . Op ti o ns fo r th e EPL -55 00 C at. No. Des cript ion No te C 83218 ✽ Window s P ri nting System RO M S I M.
1 . 2 SP E C IF IC A T IO N S T his secti on pr ov i des s t ati stic al dat a f or t he EP L-550 0. 1. 2. 1 B as ic Sp ec if i ca t i ons P rinti ng method: Laser beam scanni ng and dr y el ectrophot.
S tandard paper Xerox 4024 D P paper 20 l b (75 g/m 2 ) N ormal paper Regular photocopier paper Bond paper Recycled pape r 16 t o 2 4 l b ( 60 to 90 g/ m 2 ) S pecial papers Card st ock ( 90 to 157 g/m 2 ) Envel opes Labels Letter head Tr a nsparency ( OH P) s heet s Colored paper Printable Area 4.
U sabilit y of special paper s: S ee T able 1-4. T ab le 1 -4. U sab i li t y of S p eci al P a pe rs I nput O HP Envel opes Labels Card S to ck Lette rhead Standar d bui lt- in paper t r ay PP P P R Manual feed sl ot P P P P R Low er paper cass et te N N N N P R : Reliabl e f eedin g and good im age q uality.
1. 2. 2 E l ec tr ic al Sp e c if i ca ti o ns Ta bl e 1 - 5 . El e ct ric al R equi r em en ts a n d Ra nges D escr ipt ion 100 V V er s ion 2 00 V Ver sion Rated volt age 1 00 ∼ 120 V AC 220 ∼ 2.
1. 2. 6 Ap pl i ca bl e S t an da r ds Sa f e t y St and ard s 1 20 V AC m o del: U L 1 950, C S A 22.2 N o. 950 D ev iation 3 2 20/240 VAC model: E N 60950 ( I EC 950), N EM KO (IE C950), SE TI (IE C.
1.2 .9 S o ft ware Sp eci fic ati ons Built-in mo des: HP La ser Je t 4 emulation (P C L 5e ) EPSON GL/2 m ode (GL- lik e mode) Note : E PSON GL/2 mod e is similar to the GL / 2 mode in c luded in the H P Laser Jet 4 emulation. Ta ble 1- 6 show s the dif fere nces be tween EPS ON GL/2 mode a nd the LJ 4 GL/2 mode .
T a ble 1-7. Bui lt- in Fo nt s (C on ti nue d) Reside n t Fon ts Appl icabl e M ode HP LJ 4 GL/2 Sca lab le f o n ts Swiss 742B old Italic SW C S Swiss 7 21Ro m an SW M S Swiss 721Bold SWM S Swiss 72.
1.3 INTERFACE SPE CIF ICATIONS The EPL -55 00 is eq u ipp ed wit h the fo llowin g ex te rna l inte r fac es : ❏ Parallel inte rfac e ❏ Optional Lo ca lTalk/s er i al interfa ce ❏ Optional Type B in terfa c e with T y pe-B EX box 1.
Ta ble 1- 8. Par allel Inter face Pi n A ssign ments Pin No. Signal Name I/O Description 1 STROB E IN S T R O B E i s a s t r o b e p u l s e u s e d t o r e a d d a t a f r o m t h e h o s t com put er. The pulse width must be more than 0. 5 µ sec. Normally it is HIGH , a nd data is lat c hed at th e trailing edge o f th is s ig n al.
1. 3.1. 2 R eve rse Mo de Rever se mode for the EPL -5500 suppor ts the I EEE-P1 284 n ibble mo de. This printer can run in reverse mod e, in which the printer can inform the computer of its status wit h EJL and PJL comma nds.
Figur e 1-4 s hows the s wit ch d iag r am fo r th e par allel in te rf ac e st ate . Forward Da ta Transfer Forward Idle ST RO BE ACK and BU SY Compatib ilit y M o de Terminate Negoti ation SLC T IN .
Figu r e 1-5 s h ows th e ne go tiation tim in g char t . Notes: 1. This signal is set to HIGH wh en n o data is being sent. This sig nal i s set t o LO W duri ng se nding of data . 2. This signa l is set to HIGH if th e extens ion r e que st value w as 04h .
Figur e 1-7 s hows the t imin g cha rt for termina tion. Notes: 1. The s ignal is HIG H when HB DN A. The s ignal i s LOW wh en HB DA. 2. Th e signal is set to HIG H, if the ex te n sion r eq ues t value was 04h. 3. Idle = LOW . Figur e 1-8 s h ows the t iming chart for inter ru pts .
1.3.2 Seri al Inter fac e This pr inter c an use the o pt ional LocalT alk/serial int erface module . Type : R S-23 2C/cur rent loop Tr ansf er s yst em: F ull dupl ex Synchro niza tion: Asynchronous .
Handshaking Whe n th e vacan t area for data in the input buffe r d rops to 256 bytes, the pr inter outputs an X-OFF code or sets the DTR sig nal l evel to L OW, indi cat ing tha t the print er ca nnot rece ive m ore data.
1.3 .3 Opti onal Local Talk In terface This printer can use the optional LocalT alk/ serial in t er fac e module. Type : Local Ta lk Signal lev el: Same as RS-422 signa l le vel Proto co l: X-ON /X -OFF (c an n ot be co mbin ed wit h DTR c on trol) DT R c ontrol (c an n o t be c ombined wit h X-ON /X-OFF) Trans fer spe ed : 2 30.
1.4 OPERATING INSTRUCTIONS This s ection des cribes f unctions perfo r med through th e control pa nel, s uc h as print ing a status sheet , he xadeci mal dump, and print er se tti ngs f unctio ns. 1.4 .1 Control Pane l The pr inter contr o l pane l giv e s you e as y control over mo s t c ommon prin ter operations.
Functions of Press ing the Button ❏ Wh ile the Re d light flashe s slowly: Funct io n of b utton Cl ears a n error. Operation Hold down the button until the yellow and Re d lights both go on after re leas e. The pr inter pr ints a status sheet indicat ing the err or typ e.
1. 4.2 Pri n t er S etti n gs Func tio ns The printe r settings function from the Rem o te Control Panel (so f t ware) let s the user control most of the pr inter’s functio ns, su ch as pr inting test pages, sele c ting a paper si ze, and chang ing the p rinter ’ s configurat ion.
ESCP 2 * (C ontinue d ) Auto CR ON, OFF Au to LF O FF, ON Bi t Ima ge Dark , Li ght , BarC ode Zero Ch a r 0, φ FX* Font C ourier, Pr estige , Rom an, Sa ns serif , Script Pitch 10 CPI, 12 C PI, 15 CPI, Prop Co ndensed O FF, ON T-Mar gin 0.40 to 1.5 0 In ch (0 .
Tabl e 1- 12. Print er Se ttin gs (C o nt inu ed ) Menu Item Available Options JOB PAGE PRO TECT AUT O, ON RESOL U TION 600, 300 IM AGE O PTIM UM AUTO , OFF, ON TIME OU T 5 to 300 EMULA TIO N PA RA LL.
1.4 .3 S e rv ice Mo de This printer has th e followin g four serv ice modes: ❏ He xadeci mal dump m ode ❏ EEPRO M format mo de ❏ Facto ry reset m ode ❏ Default setting mo d e Each service mod.
1.4. 3.4 Def ault Setti ngs The d e fault s et tings function is used t o ent er printe r settings . T he procedure for entering d efault settings is: 1. To en ter the de fault sett ings m ode, tu rn on the printe r whil e holding down t he but ton unti l yellow an d re d light s turn off and on and off.
EMULA TIO N PAR ALLEL LJ4 211 ESC P2* 212 FX* 213 I239X* 214 PS* 215 GL2 221 AU TO* 222 SER IAL* LJ4 232 LT* AUX* SER IAL* ESC /P2 * 233 LT* AUX* SERIA L* FX* 234 LT* AUX* SERIA L* I239X* 235 LT* AUX* SERIA L* PS* 241 LT* AUX* SERIA L* GL/2 242 LT* AUX* SER IAL* AU TO* 243 LT* AUX* * With option EPL-5500 Service Manual General Description Rev.
Ta ble 1-14. Defa ul t Setti ngs C ode (C ont inu ed) Menu Item Available O pti ons Deafult Sett in gs Codes 1st Code 2nd Code 3rd Code ESC/P2* / FX* C G Table PcUSA 253 Italic 254 PcMultilin 255 PcPortugue 311 PcCa nFrenc 312 Pc Nordic 313 PcTurkish 314 PcE.
1.4. 4 Display of Messag es Th is pr inte r ind ica tes t hree type s of mes sage s with t he LED li ght s or s tatu s she et: st atu s mess ag es, erro r mes sage s, and the s ervic e ca ll e rror me ssa ge. 1. 4.4. 1 S tat us M essag es The LED lights normally in dicat e the print er’s status.
1.4. 5 Printe r Shar ing This section describes printer sharing. This prin t er has two metho ds of printer sharing, port fixed mo de an d aut o s ense m ode . The se mo des are s elect ed b y “INTE RFACE” in the pr inter s ett ings menu. 1.4.5.1 Port Fixed Mode Whe n the printer is in port fix ed mode, only one inter face port is a c tive .
1.4 .6 Emu lation M ode Swit ch Fu nc tion This sect ion de scr ibes the emulat ion mod e s wit ch func t ion. 1.4 . 6. 1 Emu lati on Sw i t ch by SPL The two types of emulation sw itch func tion desc r ibed be lo w a r e ava ilable o n t his prin ter.
The main improveme nt of this techniq ue is in eliminatin g “jaggies ” in diago nal lines. It is most ef fect ive when t h e do t ma p da t a f its the d eve l opm e nt cha ra cte ri s tic s o f t he p ri nte r mecha ni s m we l l. It is therefo re ne ce ssar y to set appropriat e value s in printer settings .
1.4 .8 Toner Sav e Mod e The Tone r S a ve M o d e u ses a b ou t 5 0% l e s s tone r tha n nor m a l. The pr i n te r saves tone r by su b s tiut ing a gray s had e for th e black insid e o f characters . t he out line s of the c harac t e r s are st ill print ed in full back.
1.5 MAIN COM PONENTS To simplify ma intenan c e and repair , the ma in com ponents of th e E PL -5500 h ave been des igned for easy re mov al and replace men t .
1.5. 1 C169 MAIN-B Boar d The C169 MAIN -B boar d is a video c ontr olle r and en g in e contr oller boar d . Th e prim ar y fun cti ons of this board are receiv ing print data from the hos t, gen erating the pr int image ( v ideo) , and sen ding the print image to the engin e controller via the vid eo interfac e.
1.5. 2 P WB- E Board The PWB - E is the pow er supply board, wh ich consists o f a switching r egulator cir cuit. It conver ts the AC line voltage into +24 V and +5 VDC voltages. There are t w o types of power s upply board, the 100/120 V type an d 220/240 V type.
1.5.4 Optica l Unit The opt ica l uni t consi s ts o f the l ase r di o de ( se m i -c ond ucto r la s er ), the m i rro r m o tor ( sc anner mo to r) whi ch drive s the pol ygon mirro r fo r laser sca nning, a nd sev eral mirro rs and lenses.
1.5 .6 Phot oc ondu cto r Uni t Core mec hanisms of the pr intin g process , such as c ha r ging a nd imaging, are in t egra t ed int o this unit. 1.5 .7 Develop ing Car tri dge Core mec han ism s of the printin g pro ce ss, such as de velo ping , are int egrate d int o this cart ridge.
Chapter 2 Opera ting Principle s Ta ble of Co ntent s 2.1 E NGINE OPERAT ION 2-1 2.1.1 Print Pr ocess . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.1.1.1 Paper F eeding . . . . . . . . . . . . . . .
Figure 2-20. High-V o ltage Supp ly Block Diagram . . . . . . . . . . . . . . . . . . . . . . 2-13 Figure 2-21. Print Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14 Fig u re 2-22. Print Seque nce (Star t) .
2.1 ENGINE OPERATION This section describes the functions and operating principles of the EPL-5500 engi ne. Figure 2-1 shows t he locations and names of the main engine components. 1. Fan Motor ( M3) 11. Paper Feeding Tray 2. Lower Fusing Roller 12. Paper Lift-up Plate 3.
2.1. 1 P rin t Pro cess This sect ion describes the print proc es s fr om paper feeding to paper exit. Figure 2-2 shows a diagram of the print process.
2.1. 1.1 Pap er Feed ing Paper can be fed int o the pr int er from t he paper f eed tr ay ( 150 s heets) or f rom the manual feed slot (1 sheet at a time). Installing an optional second paper feed unit ( lower cas sette, 250 sheets) adds another feedi ng method.
Second Pa per Feed Unit (Optiona l Low e r Cas s ette) This unit contai ns no dr ive motor, so t he main motor ( M 1) drive is transmitted to the paper take-up and transport sec tions in the unit vi a t he drive transmissi on gear .
2.1. 1.3 La ser E xpo sure The laser beam, emitted from the optical unit , makes an invisibl e s tati c image. The SOS (start of scan) sensor, instal led on the laser diode contr ol board (PWB-D), unifies the l aser emission timing for each scan line.
2.1. 1.5 Im age Transf er The electrode com b is an image transfer system that t ransfers t he toner image on the P C drum onto the paper. 2.1. 1.6 Fu si ng The toner image transferred onto the paper is fixed securely using a heat roller system as the fusing system.
2.1 .2 Engi ne Con tr ol This s ec t ion describes engine control, the power s uppl y boar d, and t he high-voltage supply boar d. The engine is controlled by the main board (C169 MAIN-B Board). Figure 2-10 shows t he engine controll er connecting diagr am.
2.1.2. 1 Ma in Motor F unctions and Control The M1 m ai n motor t ransmits the drive to the pr inter rollers and t he optional sec ond paper feed uni t (lower cas sette) v ia each gear as shown bel ow.
Figure 2- 12 s hows t he main motor dr iv e c ir c uit. The M1 main motor is a f our-phase s t epping motor controll ed by the CPU (IC201) on the main board (C169 MAIN-B). This board has a stepping motor driver IC that drives the M1 m ain motor with a constant current.
2.1. 2.3 Fu se r Co nt rol The heater lamp, powered by AC v oltage, heats the f user. When the power supply board receives a FUSER signal from the main board (C169 M AIN-B), the power supply board (PWB- E) supplies the AC v olt age to the heater lamp.
EPL-5500 Service Manual Operating Principles Rev. B 2-11.
If any of the f ol lowing conditions are detected, the printer indicates a fuser error: 1. If the thermis tor detects t he temperature has not r isen by 20º C for 50 msec. within 12 to 30 sec . after warm up. (This error applies onl y when t he thermistor detects a temperature of 90º C or less .
2.1. 2.5 La ser D io de Dr ive Figure 2-17 shows the laser diode drive circuit. Laser diode em ission is contr olled by three signals ( LDATA, LDAPC1, and LDA P C2) from the main board ( C169 MAIN-B). The LDATA signal is the laser on/off signal . When it is LOW, t he laser emits, and when it is HIGH, the l aser stops emitting.
2.1. 2.6 B ias V oltag es an d L aser Dr ive T imi ng Figure 2- 20 is a diagram of the drum charge bias v oltage, i m age transfer bias volt age, and the developing bias voltage c ontrol c ircuit. T hese bias volt ages are gener ated f rom the +24 V DC from the high-v oltage supply board (PWB-F).
Figure 2-21 shows t he print pr ocess. Figure 2-22 shows the start print sequence. The printer ’s engine s tarts pr int ing when it receives the PRINT signal from t he video controller cir cuit. Figure 2-23 is the end of the print sequence. Brush Roller Charging Laser Exposure PC Drum Image Transfer Development Fi gure 2-21.
2.1. 2.7 Fa n Moto r Cont rol The fan motor ( M3) rotates at engine initialization, and stops after 2 s ec. The fan m ot or also rotates during printing. When printing ends, the f an motor stops after 3 min. If the f ollowing c ondition is detected, the printer indicates a Fan m ot or error.
2.2 VIDEO CONTROLLER OPERATION The video control ler section generates the video s ignals for received data. The video controller section is the C169 M A I N-B Board. 2.2. 1 C169 MAIN-B B oar d Operat ion Figure 2-26 shows a block diagr am of v ideo control ler section of t he C169 MAIN-B Board.
Table 2-1 l ists the functions of t he main elements of the video controller section in C169 MAIN-B Board. Table 2-1. F unction s of C1 69 MAIN- B Board M ain Elem ents Element L ocation Function MB86933H RI SC CPU IC1 The CPU, whi ch operates at 22.5 MHz, manages the video control ler operati on.
Print data and commands transmitted from the host computer via the parallel or optional interf aces are read using the CPU interrupt proc ess and stored in t he DRAM input buf fer.
2.2. 1.1 R eset Circ uit The entire system (CPU and external devi ces) can be initialized if the RESET signal (CP U pi n 113) are active sim ultaneously. This c ircuit uses an M51938 IC to monitor the supply voltage if a voltage level less t han 4.25 V i s detect ed.
2.2. 1.3 In ter ru pt C ont rol The ASIC E05A93 determines the priority l evel of the interrupt and outputs it to terminals IRL0 - IRL3. Then an interrupt is sent to t he CPU. When the IRL0-3 value i s 1111b, the CPU proc ess is a non-maskable i nterrupt process.
2.2. 1.5 Par al le l Int er fa ce Cir cu it Figure 2- 31 shows a circuit bloc k diagram of the parallel int erface. Data sent from the host computer is lat ched within the E05A 93 by the STROBE signal. The E05A93 outputs a BUSY signal automatic ally to stop t he host computer f rom sending additi onal data.
2.2. 1.6 Vi deo Inte rf ace The ASIC E05A92 maps the S RAM int o a m em ory spac e different from the system m em ory. T he CPU transmi ts data from the V-RAM (in the syst em RAM ) to the SRAM using the ASIC E05A92.
Chapter 3 Disassem bly a nd Asse mbly Ta ble of Co ntent s 3.1 GENERAL INFO RM ATION 3-1 3.1.1 Precautions for Disassem bly/Assem bly . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.1.2 Tools . . . . . . . . . . . . . . . . . . . . . . . .
Fig ure 3-24. Removing the Paper Separato r . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17 Fig u re 3-25. Paper E xit Sens or . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17 Figure 3-26. Removing the G-Rin gs. . .
3.1 GENERAL INFORMATION This chapter describes disas sembly/assembly procedures to be used for replacing the m ain assembli es of the EPL-5500. 3.1 .1 P r ec aut io ns for Di sas sem bl y/Ass e mbly Follow t he precauti ons below when disassembling/ass embling the pr inter.
3.1.3 Small P arts In the following sections, abbreviations ar e used for small parts, such as screws and washers. Tables 3-2 and 3- 3 lis t these abbrev i ations.
3.1.4 Service Checks a fter Rep air Check t he repaired uni t usi ng the following list on complet ion of ser vicing. Tab le 3-3. Checks after Repai r Item Location Checkpoint Ch eck Operation Control.
3.2 DIS ASSEMBLY AND ASSEMBLY This section descri bes and illustrates the procedures for removing and disassembling the components of t he EPL- 5500. Cleaning is described i n Chapter 6.
3.2.2 Removal o f the Contro ller Sec tion The control section i s c om prised of t he cont roller board ( the C169 MAIN-B Board). 3.2. 1.1 M ain Boa rd (C 169 MAIN -B Boar d) R em oval CAUTION Before you remove t h e video controller bo ard, make sure that yo u remove any optional LocalTalk/ serial board or T ype-B EX box.
3.2 .3 Disassem bling the En gine This section describes disassembl ing t he engine, including the high voltage unit (PWB-F) and power supply boar d (PWB-E). 3.2. 3.1 Op ti cal U nit Rem oval CAUTION ❒ Do not tou ch the op t i cal unit excep t at t he time of rep lacement.
3.2. 3.2 Im age Transf er Un it R emo val 1. Open t he top cover. 2. Remove the har ness cover A. (Refer to Section 3.2.3.3.) 3. Remove the 2 screws (#5) and holders at both ends of t he image transfer unit. 4. Disconnect the 2 connectors and remove t he unit .
ASSEMBLY POINTS After reinstal ling the image transfer unit, check that the u ni t smoothly mo ves up an d down. 5. Remove the r emov e the electrode comb. ASSEMBLY POINTS When reinstallin g the el ect rode comb, be carefu l of the direct ion of instal latio n.
3.2. 3.3 U pper U ni t Rem oval 1. Open t he upper unit. 2. Remove the r i ght cover and lef t cover. (Ref er to Sec tion 3.2.1.1. ) 3. Disconnect connectors CN202, CN208, and CN211 f rom the C169 MAIN-B. 4. Remove harness covers A and B , and pull out t he CN1 of the PW B-E board.
3.2. 3.4 H igh- Vo lt age Sup ply Boa rd (PW B-F ) Remo va l 1. Open t he top cover. 2. Remove 1 screw (#5) from t he PWB-F cov er. 3. Remove the P W B-F cover. 4. Remove the 4 screws (#5) from the PWB-F boar d. 5. Disconnect 2 connectors. 6. Remove the P W B-F board.
3.2.3.5 Power S upply Unit (PWB-E) Remov al 1. Remove the upper unit . (Refer to Section 3.2.3.3.) 2. Remove 6 sc rews (#4:2, #7:2), and remove the PWB-E cover. 3. Disconnect connector CN207 f rom the C169 MAI N-B Board. 4. Remove 4 sc rews (#4) and 2 s c r ews (#6), and rem ov e the PWB-E.
3.2. 3.6 Fu si ng Un it Rem oval 1. Open t he top cover. (Refer t o Section 3.2.3.3.) 2. Remove the im age transfer unit. (Refer to Secti on 3.2.3.2.) 3. Remove 1 screw (#5), and remove the driv e tension section of the f using unit. 4. Remove the t r ans port gear.
7. Remove the har ness cover. 8. Remove the f us ing entranc e guide. Fi gure 3-17. Remov ing t he Har ness Co ver Fi gure 3-18. Remov ing t he Fu sing Entr ance G uide EPL-5500 Service Manual Disassembly and Assembl y Rev.
10. Remove 4 screws (#5), and remove t he fusi ng unit. ASSEMBLY POINTS After rei nstalling the fusing unit, check the direction of the bushings on the paper exit ro lle r and the conne cti on condi tion betwe en the roll er a nd t he grou nd pla te. Figu re 3-19.
3.2. 3.7 Fu si ng Un it Dis asse mb l y This s ection describes how to remove the paper exit sens or, heater lamp, l ower fusing roll er, and upper fus ing roll er. Heater Lamp CAUTION Do not touch t he glass surface of th e lamp with you r bare hands.
Thermistor 1. Remove the f us ing unit. (Refer to Secti on 3.2.3.6.) 2. Remove the 1 screw (#4), and remove t he thermistor. ASSEMBL POINTS When reinstalling the thermistor, wi re t he harness as shown b elow. Figu re 3- 22. Rem oving t h e Ther mist or Figu re 3-23.
Paper Separator 1. Remove the f us ing unit. (Refer to Section 3.2.3.6.) 2. Release the lock of the holder and r emov e the 3 paper separator. ASSEMBLY POINTS When reinstalling th e pap er separators, be careful of these positions as the middle one differs f rom others.
Fus ing R olle r 1. Remove the f us ing unit. (Refer to Section 3.2.3.6.) 2. Remove the 2 G-rings from the fusing unit. CAUTION Whe n r einst alli ng the G-ri ngs: ❒ Be caref ul of the direction. ❒ Securely position them i nto the grooves of the fusing roller.
5. Take out the l ower fusing roller. Thermal Fuse 1. Remove the f us ing unit. (Refer to Section 3.2.3.6.) 2. Remove 2 screws (#5), and remove the t hermal fuse. Figu re 3- 2 8. Rem ovi ng the Low er Fus ing Rol ler Figu re 3-29. Remo ving the Therm al Fuse EPL-5500 Service Manual Disassembly and Assembl y Rev.
3.2. 3.8 Main M ot or R emov al 1. Remove the hous i ng com ponent s. (Refer to Section 3.2.1.1.) 2. Remove 1 sc rew (#4) which fixing the motor bracket and t he 2 screws (#2) which fixing the main motor, and rem ove the main motor t ogether with the bracket.
3.2. 3.9 Pap er Ta ke-Up Sensor and Paper Take- U p Sole noi d Remo val 1. Remove the hous i ng com ponent s. (Refer to Section 3.2.1.1.) 2. Turn over the pr inter on its back. 3. Remove the 4 s crews (#6), and remove t he ground pl ate. 4. Turn up the lif ti ng plate.
3.2. 3.1 0 Pape r Take- Up Ro ll er Remo val 1. Remove the m ain motor. (Refer to Section 3.2.3.8.) 2. Remove the paper guide assembly. (Refer to Section 3.2.3.9.) 3. Remove the 6 screws (#4:2, #5:4), and remove the left frame. 4. Remove the 2 gear s (GEAR 29/ 65T, GEAR 22/ 57T), specified in t he figure bel ow.
Chapter 4 Adjus tme nt Ta ble of Co ntent s 4.1 ADJUSTMENT 4-1 4.1.1 Print Po sition Adjustm ent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Lis t of Fi gur es Figure 4-1. Pr int Position A djustme nt . . . . . . . .
4.1 ADJUSTME NTS This section descri bes the adjustment procedures for the EPL-5500. Y ou must perform these adjustment s after servici ng the print er, especiall y when any component or par t is r eplaced.
Chapter 5 Troub leshoo ting Ta ble of Co ntent s 5.1 OVERVI EW 5- 1 5.2 SELF-DIAGNOSTIC FUNCTION 5-1 5.2.1 SOFT ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 5.2.2 Service Call E rror . . . . . .
5.1 OVE RVIEW The EPL-5500 has a sophist ic ated, built -in, self -di agnostic funct ion that reduces the troubl eshooting time by ident if ying failed parts or components. T his sel f-diagnos ti c test identifies the t roubl eshooting problems for page pr inters, in whic h even a trivial f ailure can result in a ser ious print qual ity problem.
5.2. 2 S ervi ce C all E rro r If the pri nter detects a fatal error that unr ecoverable by the user , t he pr inter indic at es it with the LED lights as "Service Call Er ror".
Note that if any digit of corresponding error number i s "0", bot h yell ow and red LED li ghts go on and off once at the s ame time. EPL- 5500 Service Manual Troubl eshoo ting Rev.
Example: "Standard ROM error" (error number = 1130) Ord er LED (Yel lo w) LE D (Red) Interval State 1 ON OFF Short Service Call Error B indication 2 OFF ON Short 3 ON OFF Short 4 OFF ON Sh o.
Error No. Error Code Error Con d ition 4321 1000 C1000 RAM Validat ion error 1001 C1001 Sy stem RAM check error 1002 C1002 Standard RAM error 1003 C1003 Optional RA M (SIMM) error 1130 C1130 Standard .
5.3 TROUBLE SHOOTING This section describes troubleshooting abnormal operations and print quality problems. 5.3 .1 Tr oubl eshoo ting of Abn orm al Opera tion This section describes how to detect m alf unctions, and det ermine the cause, and it s uggests what actions to take for various types of malf unctions.
Ta ble 5-5. The P rint er Do es Not Operate at All Cau se Ste p Ch eckpoi nt Findin g S oluti on Connector CN207 on the C169 MAIN-B Board may be disconnected. 1 I s connector CN207 on the C169 MAIN-B Board disconnected? Yes Connect CN207 on the board.
Cause Step Checkpoint Finding Sol ution The interlock switch lever is bad. 1 Does the s witch turn on when the cas e is closed? No Replace the interlock lever. The i nte rlock sw itch m ay be dead. 2 Does the switch toggle? (Check with a multimeter.) No Replace the interloc k switch.
Ta ble 5-8. The L E D Does Not Come On (2) Cause Step Checkpoint Fi nd ing Solutio n The paper t ake-up solenoi d coil may be open or shorted. 1 Disconnect connec tor CN203 on the C169 MAI N-B Boar d and check t he coil resistance between pin 5 and pin 6 on the dis- connected cable side of t he connector, using a multimet er .
Tab le 5-8. The LED D oes No t C o me On ( 2) (Co ntinued ) Cause St ep Ch eckpoi nt Fi ndi ng Solut ion The main m otor c oil may be open or shorted. 2 Disconnect connec tor CN206 on the C169 M AIN-B.
Ta ble 5-9. The L E D Does Not Come On (3) Cause St ep Ch eck point Findin g Solut ion The standard tray has problems. 1 Is the standard tray OK? No Refer to Table 5- 8. The paper take-up solenoi d coil for the lower paper casset te may be open or shorted.
Table 5-10. The LED Does Not Come On (4) Cau se St ep Checkpoi nt Fi ndi ng Solut ion The consumables m ay not be installed. 1 A re the c onsumables ins talled? No Install the consumabl es . The paper take-up roller m ay be bad. 2 Does paper al ways jam i n paper take-up roller area? Yes Replace the paper take-up roller .
Cause Step Checkpoint Finding Solution The opt ical unit may be bad. 1 — — Replace the optical unit. The C169 MA IN-B Board m ay be bad. 2 — — Repl ace the C169 MAIN-B Bo ard .
Tab le 5-15 . Laser Light E rro r Cause Step C heckpoi nt Findi ng So luti on The optical unit may be dead. 1 — — Replace the optical unit. The C169 MAI N- B Board may be dead. 2 — — Replace the C169 MAIN-B Bo ard . Tabl e 5- 16. Comm unic atio n Err or Cause S te p Check point Findin g S olut ion The C169 MAIN- B Board may be bad.
Table 5-2 1. C1003 Error Cau se Step Ch ec kpoint Fi ndi ng Sol ution The optional SIMM may be bad. 1 Is the operat ion OK after you remove t he optional SIMM ? Yes Replace t he SIMM. The C169 MAIN-B Board may be bad. 2 — — Replace the C169 MAIN-B Board.
Table 5-2 6. C1320 Error Cau se St ep Ch eck point Fi ndi ng Solut ion The optional interface card may be bad. 1 — — Replace the optional inter face card . The C169 MAI N- B Board m ay be bad. 2 — — Replac e the C169 MAIN-B Board. Table 5-2 7.
5.4. 2 Print Qualit y Anom ali es This section describes how to isolate possible causes of a pr int qualit y problem . Tabl e 5-28. Print Quali ty A noma lies Symptom Possible Cause Part Name Check Item Remedy Low image density Poor development PWB-F board — Repl ace the PWB- F board.
Ta ble 5-28. Print Qualit y Anom ali es (Con ti nued) Symptom Possible Cause Part Name Check I tem Remedy Blank print Poor development Imaging cartridge Chec k whether the toner cartridge is installed properly . Reinstall t he toner cartridge. PWB-F boar d — Replace t he PWB-F board.
Ta ble 5-28. Print Qualit y Anom ali es (Con ti nued) Symptom Possible Cause Part Name Check I tem Remedy Toner smudges on the back side of the sheet. Improper charging PWB-F — Replace t he PWB-F board. Poor development PWB-F — Replace the PWB-F board.
Ch apt er 6 Mai nt ena nc e Ta ble of Co ntent s 6.1 MAINTENANCE 6-1 6.1.1 User Main tenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6.1.1.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . .
6-ii Rev. A.
6.1 MAINTENANCE The EPL-5500 is a page print er that uses an electrophotogr aphic printi ng m ethod. Unlike most impact or ink- jet print ers, the key c omponents i n the elect rophotographic process are integrat ed into two expendable units (the photoconduct or unit and toner car tridge).
6.1. 1.2 Replac emen t of Cons umabl es This printer uses a consumable photoconductor unit and toner cartri dge. The life of photoconductor unit is 20, 000 pages and the t oner cart r i dge life is 3,000 pages, when pri nt ing on A 4- or letter -size pages with a 5% pr i nt ratio.
EPL-5500 Service Manual Maintenance Rev. B 6-3.
Appendi x A Referenc e Materia ls Ta ble of Co ntent s A.1 CONNECTOR PIN ASSIGNM E NTS A-1 A.1.1 Main Board (C169 M A IN -B Boar d) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A -4 A.2 CIRCUIT DIAGRAM A- 1 1 A.3 CIRCUIT BOARD COMPONENT LAYOUT A-16 Lis t of Fi gur es Figure A-1.
A .1 CO NN EC TOR P I N ASSI GNME NTS F igures A- 1 and A-2 illust rate the interc onnect ion of the primar y com ponent s. Tabl e A - 1 gi ves t he si ze a nd a desc r iption of each connector. CN1 Parallel I/F CN2 RAM SIMM CN4 LocalTalk/Serial I/F module or Type-B EX ROM SIMM CN5 C169 MAIN-B Boad Video Controller Section Fi gur e A -1 .
1 2 3 4 M1 Main mo to r 5 4 3 2 M2 Polygon mot or 1 2 3 4 1 CN1 M CN206 ϕ A ϕ A ϕ B ϕ B POLYGON CTL DC5V GND DC24 V N.C. 1 2 M3 Fan motor CN211 FA N DC24 V CN21 0 1 2 3 1 2 3 CN3S ANO DE(P C1) GND PC3 PC 3 CN20 8 Pape r Exi t sensor 1 2 3 1 2 3 CN1S ANOD E (PC 1) GND PC1 PC 1 CN20 3 P a pe r Ta ke -u p s en so r 4 5 6 N.
Ta ble A -1 . B o a rd Co nne ct or S umm a ry Conn ector Descri ption Pi ns Refe rence M ai n Board (C169 M AI N-B Bo ard) C N1 C entroni cs parall el inter face 36 p ins Tabl e 1- 8 C N2 Connec tor .
A .1 .1 M ai n Bo ar d (C1 69 M AI N-B Bo ar d) Ta bl e A -2 . C N2 Pin A ss ign ment s Pin N o. Si gnal N ame I / O Descri ption 1 Vss — Ground 2 DQ 0 I/ O Data bu s bi t 0 3 DQ 16 I/ O Data bu s b.
Ta ble A-2 . C N2 Pi n As si gnme nts ( Co n tin u ed) Pi n No. S igna l Name I /O De scr i pt ion 50 DQ 24 I/ O Data bus bi t 24 51 DQ 9 I/ O Data bus bi t 9 52 DQ 25 I/ O Data bus bi t 25 53 DQ 10 I.
T abl e A -3. CN4 Pi n Ass ign ment s ( C on tinu ed ) Pin N o. Si gnal N ame I / O Descri ption 21 RD O Read st r obe s ignal 22 WR O Write strobe signal 23 IR E Q O I nt er rupt t o op ti on 24 NM I.
Ta bl e A- 4 . CN5 P i n A ssi g nm en t s Pi n No. S igna l Name I /O De scr i pt ion 1 Vss — Ground 2 D0 I/ O Data bus bi t 0 3 D16 I/ O Dat a bus bi t 16 4 D1 I/ O Data bus bi t 1 5 D17 I/ O Dat .
T abl e A -4. CN5 Pi n Ass ign ment s ( C on tinu ed ) Pin N o. Si gnal N ame I / O Descri ption 50 D24 I/ O Dat a bu s bi t 24 51 D9 I/ O Data bu s bi t 9 52 D25 I/ O Dat a bu s bi t 25 53 D10 I/ O D.
T ab l e A- 7. C N20 4 P in Ass ign men t s Pi n No. S igna l Name I /O De scr i pt ion 1 HV -C — 2 HV -T I 3 HV -S — 4 HV -S 2 — 5 HV -B 6 BI AS -M O 7 G ND2 — Ground 8 +24 — +24 V DC T ab l e A- 8.
T ab l e A- 12 . CN2 09 Pi n As si gnme nts Pin N o. Si gnal N ame I / O Descri ption 1 +2 4 V — +2 4 VD C 2 FEE D2 O Lower cass et t e sol enoid on 3 NC — No connected 4 +5 V — +5 VD C 5 GN D 1 — G r ound 6 PE 2 I Lower c assette pap er em pt y 7 PS IZ0 8 PS IZ1 9 PS IZE 2 10 CH ECK 1 11 CH ECK 2 12 CH ECK 3 T ab l e A- 13 .
A .2 CIR CUI T DIA GR AMS 16 19 20 21 22 23 24 25 26 27 28 29 30 33 2 3 4 5 6 7 8 9 1 36 14 31 10 11 12 13 32 35 17 15 18 34 CN1 PIF R8 1K R29 1K 1 2 3 4 8 7 6 5 RM7 100 C26 470P C27 470P C28 470P C29.
TOD X VI DEO X H SYN C X R212 2.2K R2 08 2. 2K 1 2 3 4 8 7 6 5 RM2 01 3.3K R211 10 K P54/CNTR0 15 P72/ SCLK 2 9 P53/ INT 4 16 P71/ SOUT 2 10 P7 0/SIN 2 11 P0 0 56 P8 6/RT P4 66 P56/ DA1 13 P57/ DA2 12.
L N F1 6. 3A, 125V R1 47 0 K C1 0. 2 2uF 125V NR1 ENC271D-10 Z7D27 1 L1 Z 0 408 , Z 04 62 C3 C4 C3 , C 4 2200pF 125V C2 0.1uF 125V BD 1 D 258 A 5 0 D2 S8 60 Th 1 100- g, M1 0 0 10 C , M 10 007 C NT H 9D 1 0 0 L A C19 0.0 1 u 25 0V R2 4 100 K 0. 5 W D4 EU 2A , A GIC ERA 22-06 R4 22 0K -1 8 0K 0.
+ 5 1 2 3 N. HEA TER 360W L. 1 2 3 N. HEAT E R 36 0W L. CN 2 IN L1 SW1 WH1 WH 2 F1 2 50V 5A C1 250V 0. 33uF VS1 47 0V L1 CM10 2 L2 CM10 2 R1 1/ 4W 470K R2 1/ 4W 470K C2 25 0 V 22 00 pF C3 25 0V 2200pF C4 250 V 0. 1 u F RC1 600 V , 1. 5 A RT1 10 C7 400V 82uF RC5 1 200 V 10A RC5 1 20 0 V 10A + + - + 1 2 4 3 ZC VS2 470V C21 250V 0.
A .3 CI RCU IT BOAR D C OM PONE NT LAY O UT Fig ur e A- 7. C1 69 MAI N- B Co mp o ne nt L ayo u t ( F ro nt) A ppendi x E PL-5500 S ervice Ma nual A- 16 R ev.
F igu re A -8 . C16 9 M AIN -B Co mp onent La yout (Rea r ) E PL- 5500 Ser vic e M anual App endi x R ev. A A- 1 7.
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