7/23/2019 Epson LQ-590, LQ-2090 Service Manual
1/128
EV[HJ CW$596(0696
[epigc Idvgk} Mh} Dg}pir Vpij}ep
[EMD6;667
[EP^IKE DGJUGC
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
2/128
Jh}ike
Gcc piab}{ pe{ep~em* Jh vgp} hn }bi{ dgjugc dgy e pevphmukem# {}hpem ij g pe}pie~gc {y{}ed# hp }pgj{di}}em ij gjy nhpd hp `y gjy degj{ ecek}phjik#
dekbgjikgc# vbh}hkhvyija# hp h}bepqi{e# qi}bhu} }be vpihp qpi}}ej vepdi{{ihj hn [EIOH EV[HJ KHPVHPG]IHJ*
Gcc ennhp} bg~e `eej dgme }h ej{upe }be gkkupgky hn }be khj}ej}{ hn }bi{ dgjugc* Bhqe~ep# {bhucm gjy epphp{ `e me}ek}em# [EIOH EV[HJ qhucm
apeg}cy gvvpekig}e `eija ijnhpdem hn }bed*
]be khj}ej}{ hn }bi{ dgjugc gpe {u`lek} }h kbgjae qi}bhu} jh}ike*
]be g`h~e jh} qi}b{}gjmija [EIOH EV[HJ KHPVHPG]IHJ kgj g{{ude jh pe{vhj{i`ici}y nhp gjy epphp{ ij }bi{ dgjugc hp }be khj{ewuejke{
}bepehn*
EV[HJ i{ g peai{}epem }pgmedgpo hn [EIOH EV[HJ KHPVHPG]IHJ*
Aejepgc Jh}ike< H}bep vphmuk} jgde{ u{em bepeij gpe nhp imej}inikg}ihj vupvh{e hjcy gjm dgy `e }pgmedgpo{ hp peai{}epem }pgmedgpo{ hn }beip
pe{vek}i~e hqjep{* EV[HJ mi{kcgid{ gjy gjm gcc piab}{ ij }bh{e dgpo{*
Khvypiab} 066= [EIOH EV[HJ KHPVHPG]IHJ*
Idgaija . Ijnhpdg}ihj Vphmuk} Mi~i{ihj
I . I K[ Wugci}y Vphdh}ihj Mev}*
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
3/128
VPEKGU]IHJ[Vpekgu}ihjgpy jh}g}ihj{ }bphuabhu} }be }er} gpe kg}eahpi|em pecg}i~e }h 7)Vep{hjgc ijlupy gjm 0) mgdgae }h ewuivdej}*
MGJAEP [iajgc{ g vpekgu}ihj qbikb# in iajhpem# khucm pe{uc} ij {epihu{ hp ng}gc vep{hjgc ijlupy* Apeg} kgu}ihj {bhucm `e erepki{em ijvepnhpdija vphkemupe{ vpekemem `y MGJAEP Begmija{*
QGPJIJA [iajgc{ g vpekgu}ihj qbikb# in iajhpem# khucm pe{uc} ij mgdgae }h ewuivdej}*
]be vpekgu}ihjgpy deg{upe{ i}edi|em `echq {bhucm gcqgy{ `e h`{ep~em qbej vepnhpdija pevgip(dgij}ejgjke vphkemupe{*
MGJAEP
7* GCQGY[ MI[KHJJEK] ]BE VPHMUK] NPHD ]BE VHQEP [HUPKE GJM VEPIVBEPGC ME IKE[ VEPNHPDIJA GJY DGIJ]EJGJKE HP PEVGIP
VPHKEMUPE[*
0* JH QHPO [BHUCM @E VEPNHPDEM HJ ]BE UJI] @Y VEP[HJ[ UJNGDICIGP QI]B @G[IK [GNE]Y DEG[UPE[ G[ MIK]G]EM NHP GCC ECEK]PHJIK[
]EKBJIKIGJ[ IJ ]BEIP CIJE HN QHPO*
;* QBEJ VEPNHPDIJA ]E[]IJA G[ MIK]G]EM QI]BIJ ]BI[ DGJUGC# MH JH] KHJJEK] ]BE UJI] ]H G VHQEP [HUPKE UJ]IC IJ[]PUK]EM ]H MH
[H* QBEJ ]BE VHQEP [UVVCY KG@CE DU[] @E KHJJEK]EM# U[E ER]PEDE KGU]IHJ IJ QHPOIJA HJ VHQEP [UVVCY GJM H]BEP ECEK]PHJIK
KHDVHJEJ][*
=* Qbej mi{g{{ed`cija hp g{{ed`cija g vphmuk}# `e {upe }h qegp ach~e{ }h g~him ijlupie{ nphd de}gc vgp}{ qi}b {bgpv emae{*
QGPJIJA
7* PEVGIP[ HJ EV[HJ VPHMUK] [BHUCM @E VEPNHPDEM HJCY @Y GJ EV[HJ KEP]INIEM PEVGIP ]EKBJIKIGJ*
0* DGOE KEP]GIJ ]BG] ]BE [HUPKE ^HC]GAE[ I[ ]BE [GDE G[ ]BE PG]EM ^HC]GAE# CI[]EM HJ ]BE [EPIGC JUD@EP(PG]IJA VCG]E* IN ]BE
EV[HJ VPHMUK] BG[ G VPIDGPY GK PG]IJA MINNEPEJ] NPHD G^GICG@CE VHQEP [HUPKE# MH JH] KHJJEK] I] ]H ]BE VHQEP [HUPKE*
;* GCQGY[ ^EPINY ]BG] ]BE EV[HJ VPHMUK] BG[ @EEJ MI[KHJJEK]EM NPHD ]BE VHQEP [HUPKE @ENHPE PEDH^IJA HP PEVCGKIJA
VPIJ]EM KIPKUI] @HGPM[ GJM(HP IJMI^IMUGC KBIV[*
=* IJ HPMEP ]H VPH]EK] [EJ[I]I E DIKPHVPHKE[[HP[ GJM KIPKUI]PY# U[E []G]IK MI[KBGPAE EWUIVDEJ]# [UKB G[ GJ]I$[]G]IK QPI[]
[]PGV[# QBEJ GKKE[[IJA IJ]EPJGC KHDVHJEJ][*
5* MH JH] PEVCGKE IDVEPNEK]CY NUJK]IHJIJA KHDVHJEJ][ QI]B KHDVHJEJ][ QBIKB GPE JH] DGJUNGK]UPEM @Y EV[HJ* IN [EKHJM
[HUPKE IN[ HP H]BEP KHDVHJEJ][ QBIKB BG^E JH] @EEJ GVVPH^EM GPE U[EM# ]BEY KHUCM KGU[E MGDGAE ]H ]BE EV[HJ VPHMUK]#
HP KHUCM ^HIM ]BE QGPPGJ]Y HNNEPEM @Y EV[HJ*
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
4/128
G`hu} ]bi{ Dgjugc]bi{ dgjugc me{kpi`e{ `g{ik nujk}ihj{# }behpy hn ecek}pikgc gjm dekbgjikgc hvepg}ihj{# dgij}ejgjke gjm pevgip vphkemupe{ hn }be vpij}ep* ]be ij{}puk}ihj{ gjm
vphkemupe{ ijkcumem bepeij gpe ij}ejmem nhp }be ervepiejkem pevgip }ekbjikigj{# gjm g}}ej}ihj {bhucm `e ai~ej }h }be vpekgu}ihj{ hj }be vpekemija vgae*
Dgjugc Khjniaupg}ihj
]bi{ dgjugc khj{i{}{ hn {ir kbgv}ep{ gjm Gvvejmir*
KBGV]EP 7* VPHMUK] ME[KPIV]IHJ[
Vph~ime{ g aejepgc h~ep~ieq gjm {vekinikg}ihj{ hn }be
vphmuk}*
KBGV]EP 0* HVEPG]IJA VPIJKIVCE[
Me{kpi`e{ }be }behpy hn ecek}pikgc gjm dekbgjikgc
hvepg}ihj{ hn }be vphmuk}*
KBGV]EP ;* ]PHU@CE[BHH]IJA
Me{kpi`e{ }be {}ev$`y${}ev vphkemupe{ nhp }be
}phu`ce{bhh}ija*
KBGV]EP =* MI[G[[ED@CY ( G[[ED@CYMe{kpi`e{ }be {}ev$`y${}ev vphkemupe{ nhp mi{g{{ed`cija
gjm g{{ed`cija }be vphmuk}*
KBGV]EP 5* GMLU[]DEJ]
Vph~ime{ Ev{hj$gvvph~em de}bhm{ nhp gmlu{}dej}*
KBGV]EP >* DGIJ]EJGJKE
Vph~ime{ vpe~ej}i~e dgij}ejgjke vphkemupe{ gjm }be
ci{}{ hn Ev{hj$gvvph~em cu`pikgj}{ gjm gmbe{i~e{
pewuipem nhp {ep~ikija }be vphmuk}*
GVVEJMIR Vph~ime{ }be nhcchqija gmmi}ihjgc ijnhpdg}ihj nhp
penepejke ==6 ;=>
70 kvi 9> 7>; 509 =75
Mpgn} Khjmej{em71 kvi 7;1 0;; 559 ==7
06 kvi 7>6 010 >52 579
CW
76 kvi 26 7;> 776 2>
70 kvi 9> 7>; 7;0 76;
75 kvi 706 06= 7>5 709
CW Khjmej{em71 kvi 7;1 0;; 721 7=1
06 kvi 7>6 010 006 71;
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
10/128
EV[HJ CW$596(0696 Pe~i{ihj G
VPHMUK] ME[KPIV]IHJ[ Neg}upe{ 76
NEEMIJA DE]BHM
Npik}ihj neem < Nphj}# Pegp
Vu{b }pgk}hp neem < Nphj}# Pegp
Vu{b . Vucc }pgk}hp neem < Nphj}# Pegp
Vucc }pgk}hp neem < Nphj}# Pegp# @h}}hd
NEEM [VEEM
Jhpdgc dhme =*0; dd 7(> ijkb neem) =5 d{ekKhj}ijuhu{ neem 6*701 DV[ d({ek)
_5*6 IV[ ijkbe{({ek)T
Khvy dhme =*0; dd 7(> ijkb neem) >> d{ekKhj}ijuhu{ neem 6*690 DV[ d({ek)
_;*> IV[ ijkbe{({ek)T
NEEMEP
Nphj} vu{b }pgk}hp
Pegp vu{b }pgk}hp
K[N @ij 7 ( @ij 0 Hv}ihj)
Vucc }pgk}hp Hv}ihj )
Phcc vgvep bhcmep Hv}ihj)
VGVEP [VEKINIKG]IHJ[
Jh}e < Vpij}ija hj pekcgidem vgvep i{ g~gicg`ce hjcy ujmep jhpdgc }edvepg}upe gjm budimi}y
khjmi}ihj{*
Jh}e ,7 < Qbej u{ija Biab$Kgvgki}y K[N# vgvep }h}gc }bikoje{{ i{ echq 75 dd*
,0 < Qbej u{ija [ijace$@ij K[N# vgvep }h}gc }bikoje{{ i{ echq 5 dd*
]g`ce 7$;* Ku} [bee} "[ijace {bee}# Jh} duc}i vgp}) CW$596
CW$596
Nphj} Ej}py Pegp Ej}py
Dgjugc Dgjugc Biab$Kgvgki}yK[N
[ijace$@ij K[N
Dij* Dgr* Dij* Dgr* Dij* Dgr* Dij* Dgr*
Qim}b ijkb)dd)
;*9)
766
76*7)
051
;*9)
766
76*7)
051
;*9)
766
2*5)
07>
1*0)
720
2*5)
07>
Ceja}b ijkb)dd)
;*9)
766
7=*;)
;>=
;*9)
766
7=*;)
;>=
;*9)
766
7=*;)
;>=
2*;)
076
7=*;)
;>=
]bikoje{{ ijkb)
dd)
6*6605)
6*6>5
6*6655)
6*7=
6*6605)
6*6>5
6*6655)
6*7=
6*6602)
6*61
6*6655)
6*7=
6*6602)
6*61
6*6655)
6*7=
Qeiab} "a(d0)c`)
507=)
960=)
507=)
960=)
>=72)
960=)
>=72)
960=)
K[N Kgvgki}y $$$ $$$ 725 {bee}{ qi}b }benhpd >= a(d0 71c`) ,7
>6 {bee}{ qi}b }be nhpd>= a(d0 71c`) ,0
756 {bee}{ qi}b }benhpd 20 a(d0 00c`) ,7
56 {bee}{ qi}b }be nhpd20 a(d0 00c`) ,0
Wugci}y Vcgij vgvep# Pekcgidem vgvep
Jh} kupcem# jh} nhcmem# jh} kpudvcem
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
11/128
EV[HJ CW$596(0696 Pe~i{ihj G
VPHMUK] ME[KPIV]IHJ[ Neg}upe{ 77
Jh}e < Vpij}ija hj pekcgidem vgvep i{ g~gicg`ce hjcy ujmep jhpdgc }edvepg}upe gjm budimi}ykhjmi}ihj{
Jh}e ,7 < Qbej u{ija Biab$Kgvgki}y K[N# vgvep }h}gc }bikoje{{ i{ `echq 75 dd*,0 < Qbej u{ija [ijace$@ij K[N# vgvep }h}gc }bikoje{{ i{ echq 5 dd*
Jh}e7< ]yve hn vgvep hn duc}i$vgp} nhpd{ {bhucm `e Kgp`hjce{{* Mhj} u{e Kgp`hj$`gkoem gjm
Kgp`hj$ij}epceg~em*0< ]yve hn vgvep hn cije acue g} }be }hv {bhucm `e {e} qi}b }be lhij}ija {ime hn vgvep
bhpi|hj}gc*
]g`ce 7$=* Ku} [bee} "[ijace {bee}# Jh} duc}i vgp}) CW$0696
CW$0696
Nphj} Ej}py Pegp Ej}py
Dgjugc DgjugcBiab$Kgvgki}y
K[N[ijace$@ij K[N
Dij* Dgr* Dij* Dgr* Dij* Dgr* Dij* Dgr*
Qim}b ijkb)dd)
;*9)
766
7>*5)
=06
;*9)
766
7>*5)
=06
;*9)
766
7>*5)
=06
1*0)
720
7>*5)
=06
Ceja}b ijkb)dd)
;*9)
766
7>*5)
=06
;*9)
766
7>*5)
=06
;*9)
766
7>*5)
=06
2*;)
076
7=*;)
;>=
]bikoje{{ ijkb)
dd)
6*6605)
6*6>5
6*6655)
6*7=
6*6605)
6*6>5
6*6655)
6*7=
6*6602)
6*61
6*6655)
6*7=
6*6602)
6*61
6*6655)
6*7=
Qeiab} "a(d0)c`)
50
7=)
96
0=)
50
7=)
96
0=)
>=
72)
96
0=)
>=
72)
96
0=)
K[N Kgvgki}y $$$ $$$ 725 {bee}{ qi}b }benhpd >= a(d0 71c`) ,7
>6 {bee}{ qi}b }be nhpd>= a(d0 71c`) ,0
756 {bee}{ qi}b }benhpd 20 a(d0 00c`) ,7
56 {bee}{ qi}b }be nhpd20 a(d0 00c`) ,0
Wugci}y Vcgij vgvep# Pekcgidem vgvep
Jh} kupcem# jh} nhcmem# jh} kpudvcem
]g`ce 7$5* Ku} [bee} "Duc}i vgp}) CW$596
CW$596
Nphj} Ej}py Pegp Ej}py
DgjugcDgjugc ( Biab$Kgvgki}y
K[N ( [ijace$@ij K[N
Dijidud Dgridud Dijidud Dgridud
Qim}b ijkb)dd)
;*9)
766
76*7)
051
$$$$$ $$$$$
Ceja}b ijkb)dd)
;*9)
766
7=*;)
;>=
$$$$$ $$$$$
Khvie{ 7 hpiaijgc / = khvie{ $$$$$
]h}gc }bikoje{{ ijkb)dd)
6*66=1)
6*70
6*675)
6*;9
$$$$$ $$$$$
Qeiab}hje {bee} hn duc}i vgp})
"a(d0)c`)
=670)
5275)
$$$$$ $$$$$
Wugci}y Vcgij vgvep# Pekcgidem vgvep
Jh} kupcem# jh} nhcmem#jh} kpudvcem
$$$$$
Lhij}ija Cije acue g} }be }hv {ime hn nhpd $$$$$ $$$$$
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
12/128
EV[HJ CW$596(0696 Pe~i{ihj G
VPHMUK] ME[KPIV]IHJ[ Neg}upe{ 70
Jh}e7< ]yve hn vgvep hn duc}i$vgp} nhpd{ {bhucm `e Kp`hjce{{* Mhj} u{e Kgp`hj$`gkoem gjm
Kgp`hj$ij}epceg~em*0< ]yve hn vgvep hn cije acue g} }be }hv {bhucm `e {e} qi}b }be lhij}ija {ime hn vgvep
bhpi|hj}gc*
Jh}e7< Vpij}ija hj kgpm i{ g~gicg`ce hjcy ujmep jhpdgc }edvepg}upe gjm budimi}y khjmi}ihj{
0< Qbej {e}}ija kgpm{# `e {upe }h gciaj }beip cen} emae qi}b }be dg}kbdgpo hn }be {bee}auime*
;< Qbej Vgvep {i|e i{ G> gjm }be {bee} i{ }h `e {e} bhpi|hj}gc# i} {bhucm `e ij{ep}em nphdpegp ej}pgjke hjcy*
=< Qbej u{ija kgpm# {e} uv kgpm dhme*
]g`ce 7$>* Ku} [bee} "Duc}i vgp}) CW$0696
CW$0696
Nphj} Ej}py Pegp Ej}py
DgjugcDgjugc ( Biab$Kgvgki}y K[N
( [ijace$@ij K[N
Dijidud Dgridud Dijidud Dgridud
Qim}b ijkb)dd)
;*9)
766
7>*5)
=06
$$$$$ $$$$$
Ceja}b ijkb)dd)
;*9)
766
7=*;)
;>=
$$$$$ $$$$$
Khvie{ 7 hpiaijgc / = khvie{ $$$$$
]h}gc }bikoje{{ ijkb)dd)
6*66=1)
6*70
6*675)
6*;9
$$$$$ $$$$$
Qeiab}hje {bee} hn duc}i vgp})
"a(d0)c`)
=670)
5275)
$$$$$ $$$$$
Wugci}y Vcgij vgvep# Pekcgidem vgvep
Jh} kupcem# jh} nhcmem#jh} kpudvcem
$$$$$
Lhij}ija Cije acue g} }be }hv {ime hn nhpd
$$$$$ $$$$$
]g`ce 7$1* Kgpm
CW$596
.
CW$0696
Nphj} Ej}py Pegp Ej}py
Dgjugc DgjugcBiab$Kgvgki}y
K[N
[ijace$@ij
K[N
Dij* Dgr* Dij* Dgr* Dij* Dgr* Dij* Dgr*
Qim}b ijkb)dd)
;*9)
766
5*2)
7=2
;*9)
766
5*2)
7=2
;*9)
766
5*2)
7=2
$$$ $$$
Ceja}b ijkb) 5*2)7=2
;*9)
766
5*2)
7=2
;*9)
766
5*2)
7=2
$$$ $$$
dd)
]bikoje{{ ijkb)dd)
6*6621)
6*00
6*6621)
6*00
6*6621)
6*00
$$$ $$$
Qeiab} "a(d0) 790
57)
790
57)
790
57)
$$$ $$$
c`)Wugci}y Vcgij vgvep# Pekcgidem vgvep
Jh} kupcem# jh} nhcmem# jh} kpudvcem
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
13/128
EV[HJ CW$596(0696 Pe~i{ihj G
VPHMUK] ME[KPIV]IHJ[ Neg}upe{ 7;
Jh}e7< Vpij}ija hj ej~echve i{ g~gicg`ce hjcy ujmep jhpdgc }edvepg}upe gjm budimi}ykhjmi}ihj{
0< [e} }be chjaep {ime hn ej~echve bhpi|hj}gccy*
;< Qbej {e}}ija ej~echve{ hn Jh* > vgvep {i|e# `e {upe }h gciaj }beip cen} emae qi}b }be
dg}kbdgpo hn }be {bee} auime*=< Ej~echve {bhucm e ij{ep}em nphd pegp ej}pgjke hjcy*
5< Erkev} nhp GIPDGIC# }be {bee}{ {}gkoem du{} jh} erkeem = {bee}{*
>< Vpij}ija i{ gcchqem hjcy hj }be nphj} {ime? vpij}ija hj }be gko {ime i{ idvh{{i`ce*
]g`ce 7$2* Ej~echve
CW$596
.
CW$0696
Nphj} Ej}py Pegp Ej}py
Dgjugc DgjugcBiab$Kgvgki}y
K[N
[ijace$@ij
K[N
Dij* Dgr* Dij* Dgr* Dij* Dgr* Dij* Dgr*
Ej~echve
Jh*>)
Qim}b ijkb)dd)
$$$$$ >*5)
7>5
$$$$$
Ceja}b ijkb)dd)
$$$$$ ;*>)
90
$$$$$
Ej~echve
Jh*76)
Qim}b ijkb)dd)
$$$$$ 9*5)
0=7
$$$$$
Ceja}b ijkb)dd)
$$$$$ =*7)
765
$$$$$
]h}gc ]bikoje{{ ijkb)dd)
$$$$$ 6*66>;)
6*7>
6*6065)
6*50
6*66>;)
6*7>
6*6065)
6*50
$$$$$
$$$$$ ]be minnepejke hn }bikoje{{ g} }be vpij}g cegpeg i{ qi}bij 6*05 dd 6*6692 ijkb)
$$$$$
Qeiab} "a(d0) $$$$$ =5 96 =5 96 $$$$$
c`) 70) 0=) 70) 0=)
K[N kgvgki}y$$$$$ $$$$$
05 {bee}{ 0= c`) $$$$
;6 {bee}{ 70 c`) $$$$
Wugci}y
$$$$$
@HJM vgvep# VCGIJ vgvep hp GIPDGIC
Jh acue g} g ncgv
Jh} kupcem# jh} nhcmem# jh} kpudvcem
$$$$$
]g`ce 7$9* Bgjmcija vh{{i ce ku} {bee}{ hn nirem nhpd{
"{ijace {bee}(duc}i$vgp}) qi}b CW$596
[i|eG; @= G= @5 G5 G> Ej~echve
Mipek}ihjPegp Ej}py
dgjugc)
^ep}ikgc $$$($$$ {($$$ {($$$ {($$$ {($$$ {($$$ $$$
Bhpi|hj}gc $$$($$$ $$$($$$ $$$($$$ {($$$ {($$$ {($$$ {
Nphj} Ej}py
dgjugc)
^ep}ikgc $$$($$$ {({ {({ {({ {({ {({ $$$
Bhpi|hj}gc $$$($$$ $$$($$$ $$$($$$ {({ {({ {({ $$$
Biab$Kgvgki}y K[N^ep}ikgc $$$($$$ {($$$ {($$$ {($$$ {($$$ {($$$ $$$
Bhpi|hj}gc $$$($$$ $$$($$$ $$$($$$ {($$$ {($$$ {($$$ {
[ijace$@ij K[N ^ep}ikgc $$$($$${
($$${
($$${
($$${
($$${
($$$ $$$Bhpi|hj}gc $$$($$$ $$$($$$ $$$($$$ {($$$ $$$ $$$ $$$
]g`ce 7$76* Bgjmcija vh{{i`ce ku} {bee}{ hn nirem nhpd{
"{ijace {bee}(duc}i$vgp}) qi}b CW$0696
[i|eG; @= G= @5 G5 G> Ej~echve
Mipek}ihj
Pegp Ej}py
dgjugc)
^ep}ikgc {($$$ {($$$ {($$$ {($$$ {($$$ {($$$ $$$
Bhpi|hj}gc {($$$ {($$$ {($$$ {($$$ {($$$ {($$$ {
Nphj} Ej}py
dgjugc)
^ep}ikgc {({ {({ {({ {({ {({ {({ $$$
Bhpi|hj}gc {({ {({ {({ {({ {({ {({ $$$
Biab$Kgvgki}y K[N^ep}ikgc {($$$ {($$$ {($$$ {($$$ {($$$ {($$$ $$$
Bhpi|hj}gc {($$$ {($$$ {($$$ {($$$ {($$$ {($$$ {($$$
[ijace$@ij K[N^ep}ikgc $$$($$$ {($$$ {($$$ {($$$ {($$$ {($$$ $$$
Bhpi|hj}gc {($$$ {($$$ {($$$ {($$$ $$$($$$ $$$($$$ $$$
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
14/128
EV[HJ CW$596(0696 Pe~i{ihj G
VPHMUK] ME[KPIV]IHJ[ Neg}upe{ 7=
]g`ce 7$77* Khj}ijuhu{ vgvep "[ijace {bee} gjm Duc}i Vgp}) CW$596
CW$596@h}}hd(Nphj}(Pegp Ej}py
Dijidud Dgridud
Qim}b ijkb)
dd)
=)
767*>
76)
05=
Ceja}b hje vgae) ijkb)
dd)
=)
767*>
00)
552*2
Khvie{ 7 hpiaijgc / = khvie{
]h}gc }bikoje{{ ijkb)
dd)
6*6605)
6*6>5
6*675)
6*;9
Qeiab}
jh} duc}i vgp})
"a(d0)
c`)50
7=)
20
00)
Qeiab}
hje {bee} hn duc}i vgp})
"a(d0)
c`)=6
70)
52
75)
Wugci}y Vcgij vgvep# Pekcgidem vgvep
Kgp`hjce{{ duc}i vgp} vgvep
Jh} `pego# qi}bhu} qpijoce# qi}bhu} }egp#qi}bhu} }upj h~ep
Lhij}ija Vhij} acue hp vgvep {}gvce`h}b {ime)
]g`ce 7$70* Khj}ijuhu{ vgvep "[ijace {bee} gjm Duc}i Vgp}) CW$0696
CW$0696@h}}hd(Nphj}(Pegp Ej}py
Dijidud Dgridud
Qim}b ijkb)
dd)
=)
767*>
7>)
=6>*=
Ceja}b hje vgae) ijkb)
dd)
=)
767*>
00)
552*2
Khvie{ 7 hpiaijgc / = khvie{
]h}gc }bikoje{{ ijkb)
dd)
6*6605)
6*6>5
6*672)
6*;9
Qeiab}
jh} duc}i vgp})
"a(d0)
c`)50
7=)
20
00)
Qeiab}
hje {bee} hn duc}i vgp})
"a(d0)
c`)=6
70)
52
75)
Wugci}y Vcgij vgvep# Pekcgidem vgvep
Kgp`hjce{{ duc}i vgp} vgvep
Jh} `pego# qi}bhu} qpijoce# qi}bhu} }egp#qi}bhu} }upj h~ep
Lhij}ija Vhij} acue hp vgvep {}gvce`h}b {ime)
EV[HJ CW 596(0696 P i i G
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
15/128
EV[HJ CW$596(0696 Pe~i{ihj G
VPHMUK] ME[KPIV]IHJ[ Neg}upe{ 75
Jh}e7< Vpij}ija hj cg`ec{ i{ g~gicg ce hjcy ujmep jhpdgc }edvepg}upe gjm budimi}y khjmi}ihj{*
0< ]be `g{e {bee} hn cg`ec{ du{} e khj}ijuhu{ vgvep*
;< Cg`ec{ {bhucm e ij{ep}em nphd `h}}hd hp nphj} ej}pgjke*
=< Mh jh} vucc hu} vgvep nphd `gkoqgpm*5< Jh cg`ec vgvep {bhucm `e cen} hj }be vpij}ep qbej }be vpij}ep i{ jh} u{em*
>< Mh jh} vpij} hj }be `g{e {bee} hn cg ec{*
1< Mh jh} u{e ku} {bee} cg ec{*
Jh}e7< Vpij}ija hj cg`ec{ i{ g~gicg`ce hjcy ujmep jhpdgc }edvepg}upe gjm budimi}y khjmi}ihj{*
0< ]be `g{e {bee} hn cg ec{ du{} e khj}ijuhu{ vgvep*
;< Cg`ec{ {bhucm e ij{ep}em nphd `h}}hd hp nphj} ej}pgjke*
=< Mh jh} vucc hu} vgvep nphd `gkoqgpm*5< Jh cg`ec vgvep {bhucm `e cen} hj }be vpij}ep qbej }be vpij}ep i{ jh} u{em*
>< Mh jh} vpij} hj }be `g{e {bee} hn cg`ec{*
1< Mh jh} u{e ku} {bee} cg ec{*
Niaupe 7$7* Cg`ec [i|e
]g`ce 7$7;* Cg`ec{ "CW$596)
CW$596@h}}hd(Nphj} Ej}py Pegp Ej}py
Dijidud Dgridud Dijidud Dgridud
Cg`ec {i|e [ee Niaupe 7$7 `echq* $$$$$
@g{e {bee} qim}b ijkb)dd)
=)
767*>
76)
05=
$$$$$ $$$$$
@g{e {bee} ceja}b
hje vgae)
ijkb)
dd)=)
767*>
00)
552*2
$$$$$ $$$$$
@g{e {bee}
]bikoje{{
ijkb)
dd)
6*6602)
6*61
6*66;5)
6*69
$$$$$ $$$$$
]h}gc }bikoje{{ ijkb)dd)
6*66>;)
6*7>
6*6615)
6*79
$$$$$ $$$$$
Cg`ec qeiab} "a(d0)c`)
>=
71)
$$$$$
Wugci}y Vcgij vgvep hp }be {gde wugci}ycg`ec{
$$$$$
]g`ce 7$7=* Cg`ec{ "CW$0696)
CW$0696@h}}hd(Nphj} Ej}py Pegp Ej}py
Dijidud Dgridud Dijidud Dgridud
Cg`ec {i|e [ee Niaupe 7$7`echq* $$$$$
@g{e {bee} qim}b ijkb)dd)
=)
767*>
7>)
=6>*=
$$$$$ $$$$$
@g{e {bee} ceja}b
hje vgae)
ijkb)
dd)=)
767*>
00)
552*2
$$$$$ $$$$$
@g{e {bee}
]bikoje{{
ijkb)
dd)
6*6602)
6*61
6*66;5)
6*69
$$$$$ $$$$$
]h}gc }bikoje{{ ijkb)dd)
6*66>;)
6*7>
6*6615)
6*79
$$$$$ $$$$$
Cg`ec qeiab} "a(d0)c`)
>=
71)
$$$$$
Wugci}y Vcgij vgvep hp }be {gde wugci}ycg`ec{
$$$$$
EV[HJ CW 596(0696 P i i G
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
16/128
EV[HJ CW$596(0696 Pe~i{ihj G
VPHMUK] ME[KPIV]IHJ[ Neg}upe{ 7>
Jh}e7< Phcc vgvep du{} `e {e} hj }be phcc vgvep bhcmep hv}ihj)*
0< Phcc vgvep {bhucm e ij{ep}em nphd pegp ej}pgjke hjcy*
;< Peceg{e ce~ep vh{i}ihj {bhucm `e npik}ihj*
]YVENGKE
@i} dgv nhj}
EV[HJ Mpgn}< 76 kvi# 70 kvi# 75 kvi
EV[HJ Phdgj< 76 kvi# 70 kvi# 75 kvi# Vphvhp}ihjgc
EV[HJ [gj{ [epin< 76 kvi# 70 kvi# 75 kvi# Vphvhp}ihjgc
EV[HJ Khupiep< 76 kvi# 70 kvi# 75 kvi
EV[HJ Vpe{}iae< 76 kvi# 70 kvi
EV[HJ [kpiv}< 76 kvi
EV[HJ HKP$@< 76 kvi
EV[HJ Hpg}hp< 76 kvi
EV[HJ Hpg}hp$[< 76 kvi
EV[HJ [kpiv} K< Vphvhp}ihjgc
[kgcg`ce nhj}*;5ddhp dhpe
7*0ddhp dhpe
Vpij}g`ce gpeg
EV[HJ CW$596(0696 Pe~i{ihj G
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
22/128
VPHMUK] ME[KPIV]IHJ[ Neg}upe{ 00
Phcc vgvep
Niaupe 7$5* Vpij}g`ce Gpeg nhp Phcc Vgvep
]g`ce 7$0=* Vpij}g`ce Gpeg nhp Phcc Vgvep
Phcc Vgvep
VQ Qim}b) Penep }h VGVEP [VEKINIKG]IHJ[ ]g ce 7$75 hj vgae 7>
VC Ceja}b) $$$$$
CD Cen} Dgpaij) ; dd hp dhpe
PD Piab} Dgpaij) ; dd hp dhpe
]D ]hv Dgpaij) =*0 dd hp dhpe
@D @h}}hd Dgpaij) $$$$$
VQ
Vpij}g`ce gpeg
CD PD
]D
EV[HJ CW$596(0696 Pe~i{ihj G
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
23/128
VPHMUK] ME[KPIV]IHJ[ Ij}epngke 0;
7*0 Ij}epngke
]bi{ vpij}ep vph~ime{ `i$mipek}ihjgc 2$`i} vgpgccec ij}epngke# U[@ ij}epngke gjm ]yve$@hv}ihjgc ij}epngke {ch} g{ {}gjmgpm*
7*0*7 Vgpgccec ij}epngke "Nhpqgpm kbgjjec)
[vekinikg}ihj{
]pgj{di{{ihj dhme< 2$`i} vgpgccec# IEEE$702= khdvg}i ici}y dhme
Gmgv}g`ce khjjek}hp< 51$;6;>6 Gdvbejhc) hp ewui~gcej}
[yjkbphji|g}ihj< $[]PH@E vuc{e
Bgjm{bgoija < @U[Y gjm $GKOJCA {iajgc{
[iajgc ce~ec< ]]C khdvg}i`ce IEEE$702= ce~ec 7 me~ike)
Jh}e < Ij(Hu} {bhq{ }be mipek}ihj hn {iajgc nchq nphd }be vpij}ep{ vhij} hn ~ieq*
]g`ce 7$05* Khjjek}hp vij g{{iajdej} "Nhpqgpm kbgjjec)
Vij
Jh*
[iajgc
Jgde
Pe}upj
AJM
Vij
IJ(
Hu},Nujk}ihj me{kpiv}ihj
7 $[]PH@E 79 Ij[}ph`e vuc{e* Ijvu} mg}g i{ cg}kbem g} ngccija emae hn}be {iajgc*
0 MG]G7 06 Ij Vgpgccec ijvu} mg}g }h }be vpij}ep* `i} 6< C[@
; MG]G0 07 Ij `i} 7
= MG]G; 00 Ij `i} 0
5 MG]G= 0; Ij `i} ;
> MG]G5 0= Ij `i} =
1 MG]G> 05 Ij `i} 52 MG]G1 0> Ij `i} >
9 MG]G2 01 Ij `i} 1< D[@
76 $GKOJCA 02 Hu}]bi{ {iajgc jeag}i~e vuc{e) ijmikg}e{ }bg} }bevpij}ep bg{ pekei~em mg}g gjm i{ pegmy }h gkkev} jer}hje*
77 @U[Y 09 Hu}]bi{ {iajgc{ biab ce~ec degj{ }bg} }be vpij}ep i{ jh}pegmy }h gkkev} mg}g*
70 VE 02 Hu} ]bi{ {iajgc{ biab ce~ec degj{ }bg} }be vpij}ep i{ ijg {}g}e hn vgvep$hu} epphp*
7; [CK] 02 Hu}Gcqgy{ g} biab ce~ec qbej }be vhqep }h }be vpij}epi{ hj*
7= $GNR] ;6 Ij Jh} u{em*
;7 $IJI] ;6 Ij ]bi{ {iajgc{ jeag}i~e vuc{e iji}igci|e{ vpij}ep*
;0 $EPPHP 09 Hu}]bi{ {iajgc{ chq ce~ec degj{ }be vpij}ep i{ ij g{}g}e hn epphp*
;> $[CIJ ;6 Ij Jh} u{em*
72 Chaik B $ Hu}]bi{ cije i{ vuccem uv }h /5 ^ }bphuab ;*9 ope{i{}hp*
;5 /5 ^ $ Hu}]bi{ cije i{ vuccem uv }h /5 ^ }bphuab 7*6 ope{i{}hp*
71 Kbg{{i{ $ $ Kbg{{i{ AJM*
7># ;;
79$;6AJM $ $ [iajgc AJM*
75# ;= JK $ $ Jh} khjjek}em*
]g`ce 7$05* Khjjek}hp vij g{{iajdej} "Nhpqgpm kbgjjec) "khj}ijuem)
Vij
Jh*
[iajgc
Jgde
Pe}upj
AJM
Vij
IJ(
Hu},Nujk}ihj me{kpiv}ihj
EV[HJ CW$596(0696 Pe~i{ihj G
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
24/128
VPHMUK] ME[KPIV]IHJ[ Ij}epngke 0=
Mg}g }pgj{di{{ihj }idija
Niaupe 7$>* Mg}g }pgj{di{{ihj }idija
Jh}e ,7 < Pi{e gjm ngcc }ide hn hu}vu} {iajgc{
,0 < Pi{e gjm ngcc }ide hn ijvu} {iajgc{
@U[Y {iajgc i{ gk}i~e biab ce~ec) ujmep gjy hn }be nhcchqija khjmi}ihj{ MG]G5 0= Ij `i} =
1 MG]G> 05 Ij `i} 5
2 MG]G1 0> Ij `i} >
9 MG]G2 01 Ij `i} 1< D[@
76 V}pKco 02 Hu} Vpij}ep kchko {iajgc*
77V}p@u{y (
Mg}g@i}$;#109 Hu}
Vpij}ep `u{y {iajgc gjm pe~ep{e kbgjjec }pgj{nepmg}g `i} ; hp 1*
70GkoMg}gPew (Mg}g@i}$0#>
02 Hu}Gkojhqcemae mg}g pewue{} {iajgc gjm pe~ep{ekbgjjec }pgj{nep mg}g `i} 0 hp >*
7;Rncga (
Mg}g@i}$7#5 02 Hu}R$ncga {iajgc gjm pe~ep{e kbgjjec }pgj{nep mg}g i} 7hp 5*
7= Bh{}@u{y ;6 Ij Bh{} @u{y {iajgc*
;7 $IJI] ;6 Ij Jh} u{em*
;0$Mg}gG~gic (Mg}g@i}$6#=
09 Hu}Mg}g G~gicg`ce {iajgc gjm pe~ep{e kbgjjec }pgj{nepmg}g `i} 6 hp =*
;> 702=$Gk}i~e ;6 Ij 702= gk}i~e {iajgc*
72 Chaik$B $ Hu}]bi{ cije i{ vuccem uv }h /5 ^ }bphuab ;*9 o
pe{i{}hp*
;5 /5 ^ $ Hu}]bi{ cije i{ vuccem uv }h /5 ^ }bphuab 7*6 ope{i{}hp*
71 Kbg{{i{ $ $ Kbg{{i{ AJM*
7># ;;
79$;6AJM $ $ [iajgc AJM*
75# ;= JK $ $ Jh} khjjek}em*
]g`ce 7$02* Khjjek}hp vij g{{iajdej}
Vij Jh* [iajgc jgde Ij(Hu} Nujk}ihj me{kpiv}ihj
7 ^KK $Kg`ce vhqep* Dgridud vhqep khj{udv}ihj i{766dG
0 $Mg}g @i$mipek}ihjgc Mg}g
; /Mg}g @i$mipek}ihjgc Mg}g# vucc uv }h /;*;^ ~ig 7*5O pe{i{}hp= Aphujm $ Kg`ce aphujm
Vij +0
Vij +=Vij +;
Vij +7
EV[HJ CW$596(0696 Pe~i{ihj G
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
27/128
VPHMUK] ME[KPIV]IHJ[ Ij}epngke 01
7*0*= Hv}ihjgc Ij}epngke
]yve$@ hv}ihjgc ij}epngke kgpm{ gpe g~gicg`ce*
7*0*5 ]yve$@ Ij}epngke khddujikg}ihj {vekinikg}ihj
Pevcy nhp Hv}ihjgc khddgjm,< Pevcy nhp ]yve$@ I(N Ce~ec 0 me~ike< jh} me{kpi`em ij u{ep!{ dgjugc)]g`ce 7$09* CW$596
Pevcy de{{gae E[K(V I@D VVM[
Dgij$]yveD]0=v#VQ26kc76kvi#VPAQ6rrrr)pe~#GV566dg
D]0=v#VQ26kc76kvi#VPAQ6rrrr)pe~#GV566dg
Vphmuk}$Jgde CW$596 CW$596
Educg}ihj$]yve E[KVC0#VPVRC0=#@MK E[KVC0#VPVRC0=#@MK
Ej}i}y$]yve EV[HJCW0 EV[HJVPVRC0=
]g`ce 7$;6* CW$0696
Pevcy de{{gae E[K(V I@D VVM[
Dgij$]yveD]0=v#VQ7;>kc76kvi#VPAQ6rrrr)pe~#GV566dg
D]0=v#VQ7;>kc76kvi#VPAQ6rrrr)pe~#GV566dg
Vphmuk}$Jgde CW$0696 CW$0696
Educg}ihj$]yve E[KVC0#VPVRC0=#@MK E[KVC0#VPVRC0=#@MK
Ej}i}y$]yve EV[HJCW0 EV[HJVPVRC0=
]g`ce 7$;7* Pevcy nhp Hv}ihjgc khddgjmHv}ihj khddgjm
jud`epKhddgjm jgde Pevcy$G Pevcy$@
66b Jh$hvepg}ihj $$$$$ $$$$$
67b [}gp} Bgpmqgpe Pe{e} Gkkev}, Ereku}e HO,
60b [}gp} [hn}qgpe Pe{e} Pelek} $$$$$
6;b [ejm Dgij [y{}ed ]yve Gkkev} Ereku}e HO
6=b [ejm Jgde Mg}g Pelek} $$$$$
65b Ijwuipe Jgde Mg}g Gkkev} Ereku}e HO
6>b [ejm Vphmuk} Jgde Gkkev} Ereku}e HO
61b [ejm [hn}qgpe Educg}ihj ]yve Gkkev} Ereku}e HO
62b Khdvce}e @unnepem Mg}g Gkkev} Ereku}e HO
69b [}hv Vphkemupe Pelek} $$$$$
6Gb Pe}upj @unnepem Mg}g Pelek} $$$$$
6@b [ejm Ej}i}y ]yve Gkkev} Ereku}e HO
6Kb [ejm [}g}u{ Gkkev} Ereku}e HO
6Mb Wui} Vphkemupe Pelek} $$$$$
6Eb Ijwuipe G[KII De{{gae Pelek} $$$$$
6Nb [ejm G[KII De{{gae Gkkev} Ereku}e HO
76b Pe{ep~em) Ujojhqj $$$$$
77b [ejm Gcc Ej}i}y ]yve Pelek} $$$$$
70b Ijwuipe Vph}hkhc Pelek} $$$$$
7;b Pe{ep~em) Ujojhqj $$$$$
7=b Ijwuipe Edepaejky De{{gae Gkkev} Ereku}e HO
75b [ejm Edepaejky Pevcy Gkkev} Ereku}e HO
7>b$7Nb Pe{ep~em) Ujojhqj $$$$$
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
28/128
EV[HJ CW$596(0696 Pe~i{ihj G
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
29/128
VPHMUK] ME[KPIV]IHJ[ Ij}epngke 09
7*0*1 IEEE702=*= vph}hkhc
]be vgkoe} vph}hkhc me{kpi`em `y IEEE702=*= i{ {uvvhp}em hj }be vgpgccec I(N*]qh nujk}ihj dhme{ hn IEEE702=*= vph}hkhc# Hnn gjm Gu}h# gpe g~gicg`ce gjmhje hn }bed i{ {ecek}em gkkhpmija }h }be ~gcue hn Menguc} {e}}ija* [ee [ek}ihj
7*;*5* Menguc} [e}}ija)*
JH]E
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
30/128
VPHMUK] ME[KPIV]IHJ[ Hvepg}ihj ;6
7*; Hvepg}ihj
]bi{ {ek}ihj me{kpi`e{ }be hvepg}ihj{ hj }bi{ vpij}ep*
7*;*7 Khj}phc vgjec
]be khj}phc vgjec hn }bi{ vpij}ep i{ ewuivvem qi}b > {qi}kbe{ gjm 76 CEM{# qbikb gpechkg}em g{ {bhqj `echq*
Niaupe 7$2* Khj}phc Vgjec
7*;*0 [qi}kbe{
7*;*0*7 Hvepg}ihj ij Jhpdgc Dhme
Ij }be jhpdgc dhme# vpe{{ija vgjec {qi}kbe{ ereku}e{ }be nhcchqija nujk}ihj{*
]g`ce 7$;;* Jhpdgc Dhme
[qi}kb Nujk}ihj
Vgu{e Gc}epjg}e{ vpij}ija gjm jh$vpij}ija {}g}u{*
Ejg`ce{ Dikph Gmlu{} nujk}ihj# bhcmija i} mhqj nhp ; {ekhjm{*
Chgm(Elek} Chgm{ hp elek}{ }be vgvep*
Ereku}e{ dikph neem nhpqgpm# qbej }bi{ nujk}ihj i{ ejg cem*
CN(NN
Ereku}e{ cije neem# vpe{{ija i} {bhp}cy*
Ereku}e{ nhpd neem# bhcmija i} mhqj nhp g neq {ekhjm{*
Ereku}e{ dikph neem `gkoqgpm# qbej }bi{ nujk}ihj i{ ejg cem*
]egp Hnn(@ij Gm~gjke{ khj}ijuhu{ vgvep }h }be ]egp$Hnn vh{i}ihj*
[ecek}{ K[N `ij 7(0 hp Kgpm dhme ij npik}ihj dhme*
Nhj} [ecek}{ nhj} gjm mpgn} wugci}y*
Vi}kb [ecek}{ vi}kb*
Pe{e} Nhj} . Vi}kb) Pe{e}{ }be vpij}ep*
DejuVi}kb . ]egp Hnn(@ij)
Ej}ep hp eri} }be menguc} {e}}ija dhme*
EV[HJ CW$596(0696 Pe~i{ihj G
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
31/128
VPHMUK] ME[KPIV]IHJ[ Hvepg}ihj ;7
7*;*0*0 Hvepg}ihj{ g} Vhqep$hj
Bhcmija mhqj }be {vekiniem {qi}kb {qi}kbe{) qbice }upjija hj }be vhqep }h }be vpij}epejg`ce{ }be {vekigc nujk}ihj{ g{ ci{}em `echq*
Jh}e ,7 < ]bi{ {e}}ija i{ nhp kuk}hdi|g}ihj vupvh{e hjcy*
,0 < Penep }h 7*;*>*0 Vphapgd Pechme dhmenhp me}gic{*
7*;*0*; Hvepg}ihj ij Menguc} [e}}ija Dhme
7*;*; Ijmikg}hp{ " CEM{ )
]bi{ vpij}ep bg{ }be nhcchqija ijmikg}hp{ }h ijmikg}e i}{ kuppej} khjmi}ihj# g{ {bhqj ij}be }g`ce `echq nhp CEM ijmikg}ihj qbej g chkoem {qi}kb i{ vpe{{em*
]g`ce 7$;=* G} Vhqep$Hj
[qi}kbe{ Nujk}ihj
Chgm(Elek} CW {ecn }e{}
CN(NN Mpgn} {ecn }e{}
Chgm(Elek} . CN(NN Mg}g mudv
Chgm(Elek} . CN(NN . Vgu{e Kcegp EEVPHD
]egp Hnn(@ij . Chgm(Elek} Kcegp EEVPHD nhp Mpi~ija Cije khuj} nhp pi``hj kbgjae}idija
Vgu{e @i$M gmlu{}dej}
Chgm(Elek} . Vgu{e Vgjec chko hu} dhme
CN(NN . Vgu{e Menguc} {e}}ija nhp vgjec chko hu}
Vi}kb . Vgu{e Khvy dhme ,7
Nhj} . Vi}kb . ]egp Hnn(@ij Vphapgd pechgm dhme ,0
]be h}bep{ Jh} g~gicg`ce
]g`ce 7$;5* Menguc} [e}}ija Dhme
[qi}kb Nujk}ihj
Deju Vi}kb . ]egp Hnn(@ij) Ej}ep hp eri} }be menguc} {e}}ija dhme*
I}ed Nhj})# I}ed Vi}kb) [ecek} }be deju*[e} ]egp Hnn(@ij) Kbgjae{ }be {e}}ija*
]be h}bep{ Jh} g~gicg`ce
]g`ce 7$;>* Jhpdgc Dhme
CEM Vgu{e Vgvep Hu} ]egp$Hnn (
@ij
Nhj} Vi}kb
Vpij}ep {}g}u{ ,7 ,0
Vgu{e Hj X X X X
Vgvep hu} epphp Hj Hj X X X
Peceg{e ce~ep epphp Hj X X X X Vgvep elek} epphp Hj @cijo X X X
Begm bh} qgpjija @cijo X X X X
Dikph Gmlu{} @cijo X X X X
]egp hnn X X ,; X X
@ij {ecek}ihj X X ,; X X
Nhj} {ecek}ihj X X X ,= X
Vi}kb {ecek}ihj X X X X ,5Chkoem {qi}kb vpe{{em ,> ,> X X X
Ng}gc epphp @cijo @cijo @cijo @cijo @cijo
EV[HJ CW$596(0696 Pe~i{ihj G
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
32/128
VPHMUK] ME[KPIV]IHJ[ Hvepg}ihj ;0
,0* Vgvep Hu} Pem )
]be Vgvep Hu} CEM i{ hj qbej }be vpij}ep i{ ij }be vgvep hu} {}g}u{# gjm i}`cijo{ qbej }be vpij}ep bg{ me~echvem g vgvep elek} epphp# gjm i} i{ hnn qbej}be vpij}ep i{ jh} ij {ukb {}g}u{*
[ee ,> nhp CEM ijmikg}ihj qbej g chkoem {qi}kb i{ vpe{{em*
,;* ]egp Hnn ( @ij Apeej)
]qh CEM{ mi{vcgy }be {}g}u{ hn K[N `ij {ecek}ihj qbej ku} {bee} i{ u{em*@h}b CEM{ gpe hnn qbej @ij7 i{ {ecek}em# hjcy }be piab} CEM i{ hj qbej @ij0i{ {ecek}em# gjm hjcy }be cen} CEM i{ hj qbej Kgpm dhme i{ {ecek}em*
@h}b CEM{ `cijo qbej khj}ijuhu{ vgvep i{ ij }be ]egp$hnn vh{i}ihj gjm `h}bCEM{ gpe hnn qbej khj}ijuhu{ vgvep i{ hu} hn }be ]egp$hnn vh{i}ihj*
@h}b CEM{ gpe hj qbej }be vpij}ep i{ ij menguc} {e}}ija dhme*
Niaupe 7$9* ]egp Hnn( @ij CEM{
,=* Nhj} Apeej )
]bpee CEM{ ijmikg}e }be {}g}u{ hn Nhj} . Mpgn} Wugci}y {ecek}ihj*
*
Niaupe 7$76* Nhj} CEM{
,5* Vi}kb Apeej )
]bpee CEM{ mi{vcgy }be {}g}u{ hn Vi}kb {ecek}ihj*
Niaupe 7$77* Vi}kb CEM{
,>* CEM ijmikg}ihj qbej g chkoem {qi}kb i{ vpe{{em
Qi}b vgjec chko hu} dhme Hj# qbej g chkoem {qi}kb i{ vu{bem# }be Vgu{eCEM gjm Vgvep Hu} CEM ncg{b {iduc}gjehu{cy nhp }bpee {ekhjm{ hp {h*
Niaupe 7$70* CEM ijmikg}ihj qbej g chkoem {qi}kb i{ vpe{{em
JH]E
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
33/128
VPHMUK] ME[KPIV]IHJ[ Hvepg}ihj ;;
7*;*= @u||ep
]bi{ vpij}ep bg{ }be `u||ep }h ijmikg}e i}{ kuppej} khjmi}ihj qi}b }be nhcchqijaijmikg}ihj{*
]be {yd`hc{ u{em ij }be }g`ce `echq pevpe{ej} }be nhcchqijaijkb# 1ijkb# 2ijkb# 2*5ijkb#77ijkb# 16(>ijkb# 70ijkb# 7=ijkb# 71ijkb
[oiv h~ep vepnhpg}ihj HNN# HJ
Gu}h }egp hnn HNN# HJGu}h cije neem HNN# HJ
Vpij} mipek}ihj @i$M# Uji$m*# Gu}h
[hn}qgpe E[K(V0# I@D VVM[
6 {cg{b 6#
I(N dhme Gu}h# Vgpgccec# U[@# Hv}ihj
Gu}h I(N qgi} }ide 76 {ekhjm{*# ;6 {ekhjm{*
Vgpgccec I(N imipek}ihjgc }ide HNN# HJVgkoe} dhme Gu}h# HNN
Gu}h KP I@D VVM[),7 HNN# HJ
G*A*D* I@D VVM[),7 HNN# HJ
Kbgpgk}ep }g`ce
[}gjmgpm ~ep{ihj6# VK2>;# VK2>5# VK2>7#@PG[KII# G`ikhdv# Phdgj 2# I[H Cg}ij 7# VK 252# I[H2259$75
JC[V ~ep{ihj=# VK2>># VK2>9# DH\HQIG# Khme DLO# I[H2259$1# I[H Cg}ij 7]# @ucagpig# VK11=# E{}hjig# I[H 2259$0#VK2>> CG]*# VK2>>UOP# VKGV]EK# VK162# VK106# VKGP2>=# VK2>6# VK2>5# VK2>7# VK 2>;# @PG[KII# G`ikhdv#Phdgj2# I[H Cg}ij 7# VK252# I[H2259$75# VK117# VK=;1[ch~ejig# VK DK# VK 7056# VK 7057
Ij}epjg}ihjgc kbgpgk}ep {e} nhpI}gcik }g`ce
I}gcik U*[*G*# I}gcik Npgjke# I}gcik Aepdgjy# I}gcik U*O*# I}gcikMejdgpo 7# I}gcik [qemej# I}gcik I}gcy# I}gcik [vgij 7
Nhj} ,; HKP$@# H}g}hp# Hpg}hp$[# [kpiv} K# Phdgj ]# [gj{ {epin BDgjugc neem qgi} }ide 7 {ekhjm# 7*5 {ekhjm{# 0 {ekhjm{# ; {ekhjm{
@u||ep HNN# HJ
Gu}h KP I@D VVM[),7 HNN# HJ
Chq$jhi{e dhme HNN# HJ
]g`ce 7$;2* [e}}ija ^gcue{ G~gicg`ce ij Menguc} [e}}ija Dhme "khj}ijuem)
I}ed [e}}ija ( gcue ,0
EV[HJ CW$596(0696 Pe~i{ihj G
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
35/128
VPHMUK] ME[KPIV]IHJ[ Hvepg}ihj ;5
7*;*> [vekigc Hvepg}ihj
@uic}$ij {vekigc nujk}ihj{ kgj e gk}i~g}em y }upjija hj }be vpij}ep qbice bhcmija mhqj}be {qi}kbe{ hj }be khj}phc vgjec ij {vekinik khd`ijg}ihj*
7*;*>*7 EEVPHD Kcegp Nujk}ihj
Yhu kgj pe}upj {hde vgpgde}ep{ ij}h }be ngk}hpy {e}}ija{ }h vepnhpd vgjec hvepg}ihjeg{icy* Vpe{{ija Chgm(Elek} . CN(NN . Vgu{e {qi}kbe{ g} }be {gde }ide qbice}upjija hj }be vpij}ep pe}upj{ }be menguc} {e}}ija{ ij}h }be ngk}hpy {e}}ija{*; @i$M Gmlu{}dej}
Penep }h }be nhcchqija nchqkbgp} nhp }be @i$M gmlu{}dej}*
Niaupe 7$7=* @i$M Gmlu{}dej} Nchqkbgp}
{}gp}
EJM
]upjija }be vpij}ep hj qbice vpe{{ija Vgu{e {qi}kb* ]be auime }hgmlu{} @i$m* gciajdej} ij }bi{ dhme i{ vpij}em gjm nip{} gciajdej}vg}}epj i{ vpij}em*
[ecek} dh{} kch{ecy gciajdej} jud`ep `y vpe{{ijaI}ed "Nhj}) gjm I}ed "Vi}kb) {qi}kbe{* Nhj} CEM{ {bhq }bevg}}epj jud`ep qbikb i{ {ecek}em g} }bg} }ide* ]be {ece{}ihj i{gm~gjkem hje `y hje g{ }be {qi}kb i{ vpe{{em# gjm }bekhd`ijg}ihj hn Hj(Hnn(@cijo hn }bh{e }bpee CEM{ i{ gc{hkbgjaem gkkhpmija }h }be {ecek}ihj*
Nir }be {ecek}em jud`ep `y vpe{{ija [e} "]egp Hnn(@ij) {qi}kb*[ecek}em jud`ep i{ nirem gjm jer} gciajdej} vg}}epj i{ vpij}em*
Peveg} [}ev{ G gjm @ uj}ic niji{bija @i$m* gmlu{}dej} nhp CWdhme*Nhcchqija gmlu{}dej} i{ ereku}em*7* @i$m* gmlu{}dej} nhp biab {veem mpgn} dhme0* @i$m* gmlu{}dej} nhp @i} Idgae "E[K , 0>B) dhme;* @i$m* gmlu{}dej} nhp CW dhme
]upj }be vpij}ep hnn*]be {e}}ija i{ {}hpem ij}h EEVPHD*
_ [}ev G T
_ [}ev @ T
EV[HJ CW$596(0696 Pe~i{ihj G
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
38/128
VPHMUK] ME[KPIV]IHJ[ Midej{ihj{ gjm Qeiab} ;2
7*= Midej{ihj{ gjm Qeiab}
Vby{ikgc {vekinikg}ihj{
CW$596
Midej{ihj{< =7= dd Q) r ;56 dd M) r 7>1*5 dd B) ,Qeiab}< Gvvphridg}ecy 1*7 oaGvvegpgjke< [ee }be niaupe{ echq*
, ]bi{ deg{upe erkcume{ }be vph}pu{ihj{*
Niaupe 7$75* Vby{ikgc [vekinikg}ihj{ nhp CW$596
CW$0696Midej{ihj{< 529 dd Q) r ;56dd M) r 7>1*5dd B) ,Qeiab}< Gvvphridg}ecy 9*5 oa
, ]bi{ deg{upe erkcume{ }be vph}pu{ihj{*
Niaupe 7$7>* Vby{ikgc [vekinikg}ihj{ nhp CW$0696
EV[HJ CW$596(0696 Pe~i{ihj G
Vb i c ini }i i c mi Bi b i} } b } n m @i 7) CW 0696
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
39/128
VPHMUK] ME[KPIV]IHJ[ Midej{ihj{ gjm Qeiab} ;9
Vby{ikgc {vekinikg}ihj{ ijkcumija Biab kgvgki}y ku} {bee} neemep @ij7)
CW$596Midej{ihj{< =7= dd Q) r =;= dd M) r ;12 dd B) ,Qeiab}< Gvvphridg}ecy 2*= oa
Gvvegpgjke< [ee }be niaupe{ echq*, ]bi{ deg{upe erkcume{ }be vph}pu{ihj{*
Niaupe 7$71* Vby{ikgc [vekinikg}ihj{ ijkcumija Biab kgvgki}y ku} {bee}
neemep "@ij 7) nhp CW$596
CW$0696Midej{ihj{< 529dd Q) r =;=dd M) r ;12dd B) ,Qeiab}< Gvvphridg}ecy 77*; oa
, ]bi{ deg{upe erkcume{ }be vph}pu{ihj{*
Niaupe 7$72* Vby{ikgc [vekinikg}ihj{ ijkcumija Biab kgvgki}y ku} {bee}
neemep "@ij 7) nhp CW$0696
=;1*5
EV[HJ CW$596(0696 Pe~i{ihj G
Vby{ikgc {vekinikg}ihj{ ijkcumija [ijace `ij ku} {bee} neemep @ij0) CW 0696
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
40/128
VPHMUK] ME[KPIV]IHJ[ Midej{ihj{ gjm Qeiab} =6
Vby{ikgc {vekinikg}ihj{ ijkcumija [ijace `ij ku} {bee} neemep @ij0)
CW$596Midej{ihj{< =7= dd Q) r ==5 dd M) r ;2> dd B) ,Qeiab}< Gvvphridg}ecy 1*1 oa
Gvvegpgjke< [ee }be niaupe{ echq*, ]bi{ deg{upe erkcume{ }be vph}pu{ihj{*
Niaupe 7$79* Vby{ikgc [vekinikg}ihj{ ijkcumija [ijace `ij ku} {bee} neemep
"@ij 0) nhp CW$596
CW$0696Midej{ihj{< 529dd Q) r ==5dd M) r ;2>dd B) ,Qeiab}< Gvvphridg}ecy 76*; oa
, ]bi{ deg{upe erkcume{ }be vph}pu{ihj{*
Niaupe 7$06* Vby{ikgc [vekinikg}ihj{ ijkcumija [ijace ij ku} {bee} neemep
"@ij 0) nhp CW$0696
EV[HJ CW$596(0696 Pe~i{ihj G
Vby{ikgc {vekinikg}ihj{ ijkcumija Biab kgvgki}y ku} {bee} neemep @ij) . [ijace CW$0696
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
41/128
VPHMUK] ME[KPIV]IHJ[ Midej{ihj{ gjm Qeiab} =7
Vby{ikgc {vekinikg}ihj{ ijkcumija Biab kgvgki}y ku} {bee} neemep @ij) . [ijace`ij ku} {bee} neemep @ij0)
CW$596Midej{ihj{< =7= dd Q) r 5>= dd M) r =62 dd B) ,
Qeiab}< Gvvphridg}ecy 9*6 oaGvvegpgjke< [ee }be niaupe{ echq*
Niaupe 7$07* Vby{ikgc [vekinikg}ihj{ ijkcumija Biab kgvgki}y ku} {bee}
neemep "@ij7) . [ijace `ij ku} {bee} neemep "@ij 0) nhp CW$596
CW$0696Midej{ihj{< 529dd Q) r 5>=dd M) r =62dd B) ,Qeiab}< Gvvphridg}ecy 70*7 oa
, ]bi{ deg{upe erkcume{ }be vph}pu{ihj{*
Niaupe 7$00* Vby{ikgc [vekinikg}ihj{ ijkcumija Biab kgvgki}y ku} {bee}
neemep "@ij7) . [ijace `ij ku} {bee} neemep "@ij 0) nhp CW$0696
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
42/128
KBGV]EP
0HVEPG]IJA VPIJKIVCE[
EV[HJ CW$596(0696 Pe~i{ihj G
0 7 H~ep~ieq K50= V[@(V[E(V[B @hgpm
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
43/128
Hvepg}ija Vpijkivce{ H~ep~ieq =;
0*7 H~ep~ieq
]bi{ vpij}ep i{ mi~imem ij}h {e~epgc dgij khdvhjej}{ nhp eg{y pedh~gc gjm pevgip* ]bedgij khdvhjej}{ gpez7*6 dG 5 MK 5%
Pe{i{}gjke chgm) [qi}kb dhme Qi}bij bhde IJ)< KCH[E
Hu} hn bhde HU])< HVEJ
v*11
VE me}ek}ihjNphj})
Degj{ Dekbgjikgc khj}gk}
[qi}kb pg}ija 6>z7*6 dG 5 MK 5%Pe{i{}gjke chgm)
[qi}kb dhme ]bepe i{ vgvep< HVEJJh vgvep< KCH[E
v*2>
VE me}ek}ihj
Pegp)
Degj{ Vbh}h ij}eppuv}ep [qi}kb pg}ija 5 MK 5%
Pe{i{}gjke chgm) [qi}kb dhme ]bepe i{ vgvep< HVEJ
Jh vgvep< KCH[E
v*2>
Vcg}ej Agvme}ek}ihj
Degj{ Dekbgjikgc khj}gk} [qi}kb pg}ija 6>z7*6 dG 5 MK 5%Pe{i{}gjke chgm)
[qi}kb dhme Jhpdgc dhme 6z7)< KCH[EKhvy dhme 0z1)< HVEJ
v*25
Peceg{e Ce~epme}ek}ihj
Degj{ Dekbgjikgc khj}gk} [qi}kb pg}ija 6>z7*6 dG 5 MK 5%
Pe{i{}gjke chgm) [qi}kb dhme Npik}ihj< HVEJ
]pgk}hp< KCH[E
v*25
Kh~ep hvejme}ek}ihj
Degj{ Dekbgjikgc khj}gk} [qi}kb pg}ija 6>z7*6 dG 5 MK 5%
Pe{i{}gjke chgm) [qi}kb dhme Kg{e hvejem< HVEJ
Kg{e kch{em< KCH[E
v*17
EV[HJ CW$596(0696 Pe~i{ihj G
0*7*0 Kipkui} Hvepg}ihj ]g`ce 0$0* Dglhp Ecedej}{ hj DGIJ @hgpm "khj}ijuem)
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
46/128
Hvepg}ija Vpijkivce{ H~ep~ieq =>
v
0*7*0*7 K552 DGIJ @hgpm
]be K552 DGIJ `hgpm i{ }be khj}phc kipkui} `hgpm hn }bi{ vpij}ep* ]bi{ `hgpm khj{i{}{
hn {e~epgc IK kbiv{ gjm mpi~ep{# g{ me{kpi`em ij }be }g`ce `echq16 Bi}gkbi) ewui~gcej}) Hvepg}ija npewuejky< 0= DB|
I(N {ek}ihj E65@26KK Bi}gkbi {epie{) ewui~gcej}) Hvepg}ija npewuejky< =2 DB|
Nujk}ihj< E65@26K
Dedhpy kykce< ; {}g}e{ 7 {}g}e =7*1 j{# PMJj 4 6# jh K[g{{ep}ihj)
Dekbgjikgc Khj}phccep {ek}ihj E65@25YG Nulidi)ewui~gcej})
Hvepg}ija npewuejky< 0= DB|
Dedhpy kykce< ; {}g}e{ 7 {}g}e =7*1 j{# PMJj 4 6# jh K[
g{{ep}ihj)
VPHDNcg{b PHD)
IK=
U{e< Vphapgd ]yve< D@D09C^266@G$96 Kgvgki}y< 2D`i} Vgkogae< ==[HV @i} khjniaupg}ihj< 2(7> {qi}kbija }yve @u{ qim}b< 7> i}{ Gkke{{ }ide< }KE 727 j{ hp ce{{
}GKK 727 j{ hp ce{{
}HE 75> j{ hp ce{{}MN >6 j{ hp ce{{ Dedhpy kykce< ; {}g}e{ 7 qeiab}
7 {}g}e 56*> j{# PMJj 4 6# jh K[g{{ep}ihj)
EEVPHD IK77
U{e< [}hpgae hn menguc} {e}}ija ~gcue{ gjm~gpihu{ vgpgde}ep{
Me~ike< [$9;K=>GMNL [II) 76 d{(qhpm qpi}ija) Kgvgki}y< 7 o`i}{ Vgkogae< [HV2 vij 756 dic)
Dg{o PHD IK2 D26K9=0G EV[HJ)
Vgpgccec IN kipkui}
[vekinikg}ihj< IEEE702= khdvcigj} Ji` ce
Mg}g pekei~ija {y{}ed< Mg}g }pgj{nep y MDG GKO vuc{e qim}b< Kgj `e {ecek}em Mg}g }pgj{nep }idija< Kgj `e {ecek}em ]pgj{kei~ep IK< 1=C^R7>702= NGIPKBICM) IK0) Khj}phc kipkui}< Ij{ime }be G[IK
U[@ IN kipkui}
[vekinikg}ihj< Uji~ep{gc [epigc @u{ [vekinikg}ihjPe~i{ihj 7*7
Pekev}ihj dhme66(7066(0=66(=266(9>66(79066 _`v{T* Mg}g pekev}ihj pg}e `e}qeej ]YVE @ gjm Dgij Kipkui}
@hgpm) i{ 0 D@({ g} vego* Mg}g pekei~ija {y{}ed< MDG Mg}g pekev}ihj }idija< @g{em hj ]YVE$@ {vekinikg}ihj
Ecedej}{ Chkg}ihj Nujk}ihj
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
47/128
EV[HJ CW$596(0696 Pe~i{ihj G
0*7*0*0 K50= V[@(V[E(V[B Vhqep [uvvcy Kipkui}
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
48/128
Hvepg}ija Vpijkivce{ H~ep~ieq =2
Niaupe 0$5* K552 DGIJ @chko Migapgd
]bi{ vpij}ep kgj `e vhqepem `y hje hn }be nhcchqija }bpee vhqep {uvvcy `hgpm{< }beK50=V[@ 706 ^) `hgpm# }be K50=V[E 0;6 ^) `hgpm# hp }be K50=V[B Uji~ep{gc)`hgpm* ]be nujk}ihj hn }be `hgpm{ i{ }be {gde# erkev} nhp g minnepejke ij }be vpidgpy
kipkui}py* ]be vhqep {uvvcy hu}vu}{ }be MK kuppej} jeke{{gpy }h mpi~e }be vpij}epkhj}phc kipkui} gjm mpi~e }be dekbgji{d*
KIPKUI] KHJ[]I]U]IHJ
Niaupe 0$> `echq {bhq{ }be `chko migapgd hn }bi{ vhqep {uvvcy kipkui}*
Niaupe 0$>* Vhqep [uvvcy Kipkui} @chko Migapgd
]g`ce 0$;* Kipkui} Khj{}i}u}ihj
@chko Me{kpiv}ihj
Ijvu} Nic}ep Ijpu{b kuppej} vpe~ej}i~e kipkui} qi}b g vhqep }bepdi{}hp
\K$PKK Khj~ep}ep
=0 ^ |eph kph{{ PKK hn biab vepnhpdgjke Khj{}gj}$~hc}gae me}ek}ija kipkui} hn ]p/\M }yve Chq vhqep {}gjm`y dhme nujk}ihj `y }be E[G^E {iajgc i{
{uvvhp}em
/5 ^ Kipkui} Kbhvvep kipkui} qi}b g DH[NE] mi{kpe}e {}puk}upe
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
49/128
EV[HJ CW$596(0696 Pe~i{ihj G
VPH]EK]I^E NUJK]IHJ[
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
50/128
Hvepg}ija Vpijkivce{ H~ep~ieq 56
]g`ce 0$>* Vph}ek}i~e Nujk}ihj{
I}ed Hu}vu} 7 Hu}vu} 0
H~epkuppej} vph}ek}ihj HKV) Mphvvija / ku}hnn Ku}hnn
HKV pe{e} de}bhm]upjija vhqep hnnhjke gjm hj gagij
]upjija vhqep hnnhjke gjm hj gagij
Chgm {bhp}$kipkui} kuppej} 6 G 6 G
H~ep~hc}gae vph}ek}ihj H^V) Ku}hnn }yve Ku}hnn }yve
H^V vpe{e} ~hc}gae =5 z 52 > z 9
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
51/128
KBGV]EP
;]PHU@CE[BHH]IJA
EV[HJ CW$596(0696 Pe~i{ihj G
;*7 H~ep~ieq ;*7*0 Vphkemupe nhp ]phu`ce{bhh}ija
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
52/128
]phu`ce{bhh}ija H~ep~ieq 50
]be vpij}ep dgy erbi`i} minnepej} {ydv}hd{ nhp }be {gde vph`ced# qbikb dgoe{}phu`ce{bhh}ija dhpe minnikuc}* ]bi{ {ek}ihj# bhqe~ep# vph~ime{ {idvce gjm ennek}i~eqgy{ }h ngkici}g}e }phu`ce{bhh}ija*
Ij gmmi}ihj# }be U{ep!{ Dgjugc nhp EV[HJ CW$596(0696 me{kpi`e{ me}gicem {}ev{ }h `e}goej nhp pekh~epy nphd }yvikgc epphp{*
;*7*7 [vekiniem ]hhc{
]bi{ vpij}ep mhe{ jh} pewuipe gjy {vekiniem }hhc{ nhp }phu`ce{bhh}ija*
Vepnhpd }phu`ce{bhh}ija qhpo gkkhpmija }h }be nchqkbgp} {bhqj g} piab}*
Niaupe ;$7* ]phu`ce{bhh}ija Vphke{{ Nchqkbgp}
QGPJIJA Qbej yhu mi{g{{ed`ce }be vpij}ep# vucc }be vhqep kg`ce gjm }be
ij}epngke kg`ce hu} hn }be vcua {hkoe} `enhpebgjm*
Qbej yhu }hukb gjy {upngke qbikb kgj `ekhde bh}# }goe kgpe
jh} }h {unnep g `upj*
KGU]IHJ U{e hjcy {vekiniem }hhc{ }h g~him idvgipija }be wugci}y hn }be
vpij}ep*
U{e hjcy {vekiniem cu`pikgj}{ gjm gmbe{i~e{*
Kgppy hu} }be gmlu{}dej} `y nhcchqija }be {vekiniem vphkemupe*
Qegp g qpi{} {}pgv }h mi{kbgpae {}g}ik ecek}piki}y nphd }be
budgj `hmy# qbeje~ep vh{{i`ce*
KGU]IHJ @enhpe {}gp}ija mi{g{{ed`cy gjm g{{ed`cy qhpo# pegm gjm
ujmep{}gjm }bhphuabcy }be khj}ej}{ hn;*7*; Vpecidijgpy Kbeko{
"v*5;)*
@phoej cije gpphq;)
Gmlu{}dej} "v*90)gjm Dgij}ejgjke "v*99)
;*0 ]phu`ce{bhh}ija @g{em hj [ydv}hd{ "v*5=)
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
53/128
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
54/128
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
55/128
EV[HJ CW$596(0696 Pe~i{ihj G
;*0*= G`jhpdgc vgvep neemija
]g`ce ; > G`jhpdgc vgvep neemija
]g`ce ;$>* G`jhpdgc vgvep neemija
[}ev Gk}ihj gjm Wue{}ihj Ye{ Jh
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
56/128
]phu`ce{bhh}ija ]phu`ce{bhh}ija @g{em hj [ydv}hd{ 5>
]g`ce ;$>* G`jhpdgc vgvep neemija
[}ev Gk}ihj gjm Wue{}ihj Ye{ Jh
Vgp}{ `echq kgj `e }be {hupke hn }bi{ epphp "Kbgv}ep = Mi{g{{ed`cy gjm G{{ed`cy)
Nphj} VE Vgvep Ejm) Me}ek}hp"v*2>)
Bgpje{{ hn Nphj} VE Me}ek}hp
Pegp VE Me}ek}hp"v*2>)
Bgpje{{ hn Pegp VE Me}ek}hp
Peceg{e Me}ek}hp"v*25)
Bgpje{{ hn Peceg{e Me}ek}hp
Pegp Vgvep Auime G{{ed`cy "v*29)
VN Dh}hp"v*20)
VN Aegp ]pgij "v*2;)
K552 DGIJ @hgpm "v*1;)
7
Kbekoija nhp nhpeiaj dg}}ep{
Dgoe {upe }bg} }bepe gpe jh nhpeiaj dg}}ep{ ij }benhcchqija gpeg{*
Vgvep vg}b
VN Aegp ]pgij
I{ }be vph`ced {hc~em8
Vph`ced{hc~em
Ah }h [}ev 0
0
Khjjek}ihj hn {ej{hp
Dgoe {upe }bg} }be nhcchqija {ej{hp{ gpe khjjek}emvphvepcy)
Pegp VE Me}ek}hp KJ1)
Peceg{e Me}ek}hp KJ77)
I{ }be vph`ced {hc~em8
Vph`ced{hc~em
Ah }h [}ev ;
;
Menek}i~e {ej{hpPevcgke }be menek}i~e hje hn }be nhcchqija {ej{hp{qi}b g jeq hje)
Pegp VE Me}ek}hp KJ1)
Peceg{e Me}ek}hp KJ77)
I{ }be vph`ced {hc~em8
Pevcgke }bemenek}i~e{ej{hp{*
Ah }h [}ev =
=
Bgpje{{ hn {ej{hp
Pevcgke }be menek}i~e bgpje{{ hn }be nhcchqija{ej{hp{ qi}b g jeq hje)
Pegp VE Me}ek}hp KJ1)
Peceg{e Me}ek}hp KJ77)
I{ }be vph`ced {hc~em8
Pevcgke }bemenek}i~ebgpje{{*
Ah }h [}ev 5
5
Vgvep kbgjaeh~ep dekbgji{d
I{ }be vgvep neemija mipek}ihj {qi}kbem qbej yhu
hvepg}e }be peceg{e ce~ep8
Ah }h [}ev >KbekoVNAegp ]pgij
"v*2;)
>
Vgvep neem dekbgji{d
Qi}b vhqep }upjem hnn# kbeko }h {ee in yhu kgj neemvgvep `y }upjija }be vcg}ej ojh` `y bgjm*
Kgj vgvep `e nem `y }upjija }be vcg}ej ojh` `ybgjm8
Ah }h [}ev 1Kbeko }be
vgvep neemdekbgji{d
1VN Dh}hp
Pevcgke }be VN Dh}hp qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }be VNDh}hp*
Ah }h [}ev 2
2Dgij @hgpm
Pevcgke }be Dgij @hgpm qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beDgij @hgpm*
Ah }h ;*0*77Ecek}pikgc
Jhi{e "v*>7)
EV[HJ CW$596(0696 Pe~i{ihj G
;*0*5 Vpij}ija i{ nguc}y mupija {ecn$}e{}# `u} kgppigaehvepg}ihj i{ jhpdgc
]g`ce ;$1* Vpij}ija nguc}y mupija {ecn$}e{}# `u} kgppigae hvepg}ihj jhpdgc
[}ev Gk}ihj gjm Wue{}ihj Ye{ Jh
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
57/128
]phu`ce{bhh}ija ]phu`ce{bhh}ija @g{em hj [ydv}hd{ 51
]g`ce ;$1* Vpij}ija nguc}y mupija {ecn$}e{}# `u} kgppigae hvepg}ihj jhpdgc
[}ev Gk}ihj gjm Wue{}ihj Ye{ Jh
Vgp}{ `echq kgj `e }be {hupke hn }bi{ epphp "Kbgv}ep = Mi{g{{ed`cy gjm G{{ed`cy)
Nu{e
Vpij}begm "v*1>)
KP Dh}hp"v*26)
VN Dh}hp"v*20)
K50=V[@(V[E(V[B @hgpm "v*15)
K552 DGIJ @hgpm "v*1;)
7
Nu{e
Kbeko }be ecek}pik kipkui} gjm vpij}ep dekbgji{d#gjm in }bey gpe jh} {bhp}$kipkui}}em# pevcgke }be nu{eqi}b g jeq hje*
I{ }be vph`ced {hc~em8
Vph`ced{hc~em
Ah }h [}ev 0
0
Khjjek}ihj qi}b khjjek}hp{
Dgoe {upe }bg} gcc }be khjjek}hp{ hj }be DgijKipkui} @hgpm gjm Vhqep [uvvcy @hgpm gpekhjjek}em vphvepcy*
I{ }be vph`ced {hc~em8
Vph`ced{hc~em
Ah }h [}ev ;
;Vcg}ej Agv
Gmlu{} }be Vcg}ej Agv*
I{ }be vph`ced {hc~em8
Pevcgke }beVpij}begm*
Ah }h [}ev =
=Menek}i~e KP Dh}hp
Pevcgke }be KP Dh}hp qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beKP Dh}hp*
Ah }h [}ev 5
5Menek}i~e VN Dh}hp
Pevcgke }be VN Dh}hp qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }be VNDh}hp*
Ah }h [}ev >
>Vhqep [uvvcy @hgpm
Pevcgke }be Vhqep [uvvcy @hgpm qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beVhqep [uvvcy
@hgpm*Ah }h [}ev 1
1Dgij @hgpm
Pevcgke }be Dgij @hgpm qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beDgij @hgpm*
Ah }h ;*0*77Ecek}pikgc
Jhi{e "v*>7)
EV[HJ CW$596(0696 Pe~i{ihj G
;*0*> G`jhpdgc hvepg}ihj hn Khj}phc Vgjec ;*0*1 G`jhpdgc hj$cije hvepg}ihj "jhpdgc {ecn$vpij}ija#}bhuab)
]g`ce ;$2* G`jhpdgc hvepg}ihj hn Khj}phc Vgjec
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
58/128
]phu`ce{bhh}ija ]phu`ce{bhh}ija @g{em hj [ydv}hd{ 52
]g`ce ; 2* G`jhpdgc hvepg}ihj hn Khj}phc Vgjec
[}ev Gk}ihj gjm Wue{}ihj Ye{ Jh
Vgp}{ `echq kgj `e }be {hupke hn }bi{ epphp "Kbgv}ep = Mi{g{{ed`cy gjm G{{ed`cy)
Khj}phc Vgjec "v*17)
Bgpje{{ hn Khj}phc Vgjec
K552 DGIJ @hgpm "v*1;)
7
Khjjek}ihj hn bgpje{{ hn Khj}phc Vgjec
Dgoe {upe }bg} }be khjjek}hp{ hn Khj}phc Vgjec zDgij Kipkui} @hgpm KJ7 z KJ06) gpe khjjek}emvphvepcy*
I{ }be vph`ced {hc~em8
Vph`ced{hc~em
Ah }h [}ev 0
0
Bgpje{{ hn Khj}phc Vgjec
Pevcgke }be bgpje{{ hn }be Khj}phc Vgjec qi}b g jeqhje*
I{ }be vph`ced {hc~em8
Pevcgke }bebgpje{{*
Ah }h [}ev ;
;Khj}phc Vgjec
Pevcgke }be Khj}phc Vgjec qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beKhj}phc Vgjec*
Ah }h [}ev =
=Dgij @hgpm
Pevcgke }be Dgij @hgpm qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beDgij @hgpm*
Ah }h ;*0*77Ecek}pikgc
Jhi{e "v*>7)
]g`ce ;$9* G`jhpdgc hj$cije hvepg}ihj "jhpdgc {ecn$vpij}ija# }bhuab)
[}ev Gk}ihj gjm Wue{}ihj Ye{ Jh
Vgp}{ `echq kgj `e }be {hupke hn }bi{ epphp "Kbgv}ep = Mi{g{{ed`cy gjm G{{ed`cy)
Ij}epngke kg ce U[@ hp vgpgccec)
K552 DGIJ @hgpm "v*1;)
7
Khjjek}ihj hn ij}epngke kg`ce
Dgoe {upe }bg} }be ij}epngke kg`ce dee}{ }be{vekinikg}ihj gjm i{ khjjek}em vphvepcy*
I{ }be vph`ced {hc~em8
Vph`ced{hc~em
Ah }h [}ev 0
0Ij}epngke kg`ce
Pevcgke }be ij}epngke kg`ce ekgu{e }be kg`ce dgy`e menek}i~e gjm }bu{ kgj kgu{e {hde }phu`ce*
I{ }be vph`ced {hc~em8
Pevcgke }beij}epngke
kg`ce*Ah }h [}ev ;
;Nipdqgpe
Uvapgme nipdqgpe }h }be cg}e{} ~ep{ihj*
I{ }be vph`ced {hc~em8
Vph`ced{hc~em
Ah }h [}ev =
=
EEVPHD kcegpija
Kcegp EEVPHD }h pe{}hpe }be menguc} {e}}ija{*I{ }be vph`ced {hc~em8
Vph`ced{hc~em Ah }h [}ev 5
5Dgij @hgpm
Pevcgke }be Dgij @hgpm qi}b g jeq hje*@
I{ }be vph`ced {hc~em8
Vph`ced{hc~em
Ah }h ;*0*77Ecek}pikgc
Jhi{e "v*>7)
EV[HJ CW$596(0696 Pe~i{ihj G
;*0*2 G`jhpdgc hvepg}ihj hn pi `hj
]g`ce ;$76* G`jhpdgc hvepg}ihj hn pi``hj
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
59/128
]phu`ce{bhh}ija ]phu`ce{bhh}ija @g{em hj [ydv}hd{ 59
v
[}ev Gk}ihj gjm Wue{}ihj Ye{ Jh
Vgp}{ `echq kgj `e }be {hupke hn }bi{ epphp "Kbgv}ep = Mi{g{{ed`cy gjm G{{ed`cy)
Pi `hj Kgp}pimae
]idija @ec}
KP Dh}hp"v*26)
Pi``hj Mpi~e PM) G{{ed`cy "v*97)
K552 DGIJ @hgpm "v*1;)
7Pi``hj Kgp}pimae
Menek}i~e Pi``hj Kgp}pimae
Kgj }be Pi``hj Kgp}pimae `e }upjem `y bgjm8
Ah }h [}ev 0Pevcgke }be
Pi``hjKgp}pimae*
0
Menek}i~e Kgppigae
Kbeko }be hvepg}ihj hn }be Kgppigae gjm ]idija@ec}*
Mhe{ }be kgppigae gjm `ec} hvepg}e {dhh}bcy8
Ah }h [}ev ;
Ah }h ;*0*9G`jhpdgc
hvepg}ihj hnKgppigae Uji}
"v*>6)
;
Menek}i~e Pi``hj Mpi~e G{{ed`cy
Kbeko }be hvepg}ihj hn }be Pi``hj Mpi~e G{{ed`cy*
Mhe{ }be Pi``hj Mpi~e G{{ed`cy }upj {dhh}bcy8Ah }h [}ev ;
Pevcgke hpcu`pikg}e }bePi``hj Mpi~e
G{{ed`cy*
=Dgij @hgpm
Pevcgke }be Dgij @hgpm qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Vph`ced{hc~em
Ah }h ;*0*77Ecek}pikgc
Jhi{e "v*>7)
EV[HJ CW$596(0696 Pe~i{ihj G
;*0*9 G`jhpdgc hvepg}ihj hn Kgppigae Uji}
]g`ce ;$77* G`jhpdgc hvepg}ihj hn Kgppigae Uji}Menek}i~e bgpje{{ hn BV Me}ek}hp P c }b
]g`ce ;$77* G`jhpdgc hvepg}ihj hn Kgppigae Uji} "khj}ijuem)
[}ev Gk}ihj gjm Wue{}ihj Ye{ Jh
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
60/128
]phu`ce{bhh}ija ]phu`ce{bhh}ija @g{em hj [ydv}hd{ >6
[}ev Gk}ihj gjm Wue{}ihj Ye{ Jh
Vgp}{ `echq kgj `e }be {hupke hn }bi{ epphp "Kbgv}ep = Mi{g{{ed`cy gjm G{{ed`cy)
]idija @ec} KP Dh}hp"v*26)
BV Bhde Vh{i}ihj) Me}ek}hp"v*11)
Bgpje{{ hn BV Me}ek}hp
Pi``hj Mpi~e PM) G{{ed`cy "v*97)
K552 DGIJ @hgpm "v*1;)
7
Kbekoija }be khjjek}ihj hn khjjek}hp{
Dgoe {upe }bg} }be nhcchqija khjjek}hp{ gpe
khjjek}em vphvepcy* BV Me}ek}hp KJ2)
KP Dh}hp KJ70)
I{ }be vph`ced {hc~em8
Vph`ced{hc~em
Ah }h [}ev 0
0
]idija @ec}
Kbeko }h {ee in }be mpi~ija vg}b hn }be ]idija @ec}i{ h`{}puk}em qi}b nhpeiaj dg}}ep{ hp }be `ec} i{mgdgaem*
I{ }be ]idija @ec} npee nphd h`{}puk}ihj hp mgdgae8
Ah }h [}ev ;Pevcgke }be]idija @ec}*
;
Pi``hj Mpi~e G{{ed`cy
Hvepg}e }be ]idija @ec} `y bgjm gjm kbeko }bedh~edej}*
Mhe{ }be ]idija @ec} hvepg}e {dhh}bcy8
Ah }h [}ev =
Pevcgke hpcu`pikgj} }bePi``hj Mpi~e
G{{ed`cy*
=
Kbekoija }be hvepg}ihj hn }be Kgppigae Uji}
Kbeko }h {ee in yhu kgj dh~e }be Kgppigae Uji} hj}be [BGN]#KP#AUIME nphd {ime }h {ime `y bgjm*
Mhe{ }be Kgppigae Uji} hvepg}e {dhh}bcy8
Ah }h [}ev 5Penep }h
Cu`pikg}ihj
"v*767)
5Menek}i~e BV Me}ek}hp
Pevcgke }be BV Me}ek}hp qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beBV Me}ek}hp*
Ah }h [}ev >
>
Menek}i~e bgpje{{ hn BV Me}ek}hp
Pevcgke }be bgpje{{ hn }be BV Me}ek}hp qi}b g jeqhje*
I{ }be vph`ced {hc~em8
Pevcgke }be
bgpje{{ hn
}be BV
Me}ek}hp*
Ah }h [}ev 1
1Menek}i~e KP Dh}hp
Pevcgke }be KP Dh}hp qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beKP Dh}hp*
Ah }h [}ev 2
2Dgij @hgpm
Pevcgke }be Dgij @hgpm qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beDgij @hgpm*
Ah }h ;*0*77Ecek}pikgc
Jhi{e "v*>7)
EV[HJ CW$596(0696 Pe~i{ihj G
;*0*76 Nguc}y vpij} ;*0*77 Ecek}pikgc Jhi{e
]g`ce ;$70* Nguc}y vpij} ]g`ce ;$7;* ]phu`ce{bhh}ija nhp Ecek}pikgc Jhi{e
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
61/128
]phu`ce{bhh}ija ]phu`ce{bhh}ija @g{em hj [ydv}hd{ >7
[}ev Gk}ihj gjm Wue{}ihj Ye{ Jh
Vgp}{ `echq kgj `e }be {hupke hn }bi{ epphp "Kbgv}ep = Mi{g{{ed`cy gjm G{{ed`cy)
Pi``hj Dg{o Vpij}begm "v*1>)
Vpij}begm NNK
K552 DGIJ @hgpm "v*1;)
7
Pi``hj Dg{o
Pedh~e }be Pi``hj Dg{o nphd }be Vpij}begm# gjmdgoe {upe }bg} }be Pi``hj Dg{o i{ npee nphdmenhpdg}ihj hp mgdgae*
I{ }be vph`ced {hc~em8
Vph`ced{hc~em
Ah }h [}ev 0
0Menek}i~e Vpij}begm
Pevcgke }be Vpij}begm qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beVpij}begm*
Ah }h [}ev ;
;Vcg}ej Agv Gmlu{}dej} "v*9=)
Gmlu{} }be vcg}ej agv*
I{ }be vph`ced {hc~em8
Vph`ced{hc~em
Ah }h [}ev =
=Vpij}begm NNK
Pevcgke }be Vpij}begm NNK qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beVpij}begm
NNK*Ah }h [}ev 5
5Dgij @hgpm
Pevcgke }be Dgij @hgpm qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beDgij @hgpm*
Ah }h ;*0*77Ecek}pikgc
Jhi{e "v*>7)
[}ev Gk}ihj gjm Wue{}ihj Ye{ Jh
Vgp}{ `echq kgj `e }be {hupke hn }bi{ epphp "Kbgv}ep = Mi{g{{ed`cy gjm G{{ed`cy)
K50=V[@(V[E(V[B @hgpm "v*15)
K552 DGIJ @hgpm "v*1;)
7
Er}epjgc jhi{e
7* Kbeko }h {ee in qi}bij ; d nphd }be vpij}ep }bepe i{gjh}bep ecek}pikgc gvvgpg}u{# {ukb g{ g aejepg}hp#pgmih }pgj{di}}ep hp gj gvvgpg}u{ ijkhpvhpg}ija gdh}hp*
0* ]upj hnn }be vhqep }h }be ecek}pikgc gvvgpg}u{ ij
wue{}ihj hp dh~e }be vpij}ep }h g vh{i}ihj g} ceg{} >d mi{}gj} nphd }be gvvgpg}u{*
Mhe{ }be vph`ced qi}b ecek}pikgc jhi{e {}icc hkkup8
Ah }h [}ev 0Vph`ced{hc~em
0
GK aphujmija
Kbeko }be GK vhqep khjjek}ihj*
I{ }be GK vhqep kg`ce khjjek}em gjm aphujmemvphvepcy8
Ah }h [}ev ;
G{o }beku{}hdep nhppevgip hn }beGK vhqepkhjjek}ihj*
;
Bgpje{{ hn Vhqep [qi}kb
7* Pedh~e }be Vpij}ep Dekbgji{d* "v*19)
0* Pevcgke }be BHU[IJA G[[Y*#CHQEP qi}b g jeqhje*
I{ }be kg`ce aphujmem vphvepcy8
Ah }h [}ev =
Ij{}gcc }beaphujmija
{kpeqvphvepcy*
=
Aphujmija hn kipkui} `hgpm{
7* Pedh~e }be [biecm Kh~ep*"v*1;)
0* Dgoe {upe }bg} }be {kpeq{ nhp }be Vhqep [uvvcy@hgpm i{ }iab}ejem {ekupecy*
I{ aphujmija ej{upem8
Ah }h [}ev 5Ej{upe
aphujmija*
5Vhqep [uvvcy @hgpm
Pevcgke }be Vhqep [uvvcy @hgpm qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beVhqep [uvvcy
@hgpm*Ah }h [}ev 1
>Dgij @hgpm
Pevcgke }be Dgij @hgpm qi}b g jeq hje*
I{ }be vph`ced {hc~em8
Pevcgke }beDgij @hgpm*
Vph`ced{hc~em
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
62/128
EV[HJ CW$596(0696 Pe~i{ihj G
;*; ]phu`ce{bhh}ija nhp Ijmi~imugc Uji}{
; ; 7 Dgij Khdvhjej} Kbekoija Vhij}
]g`ce ;$7>*
Khddhj Cije Khppe{vhjmija Qipe{
K7 7 2 7> 0=
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
63/128
]phu`ce{bhh}ija ]phu`ce{bhh}ija nhp Ijmi~imugc Uji}{ >;
;*;*7 Dgij Khdvhjej} Kbekoija Vhij}
]be nhcchqija khdvhjej}{ kgj `e kbekoem qi}b g {idvce deg{upedej} }hhc# {ukb g{ gduc}i$de}ep# eg{icy*
Dh}hp{
Jh}e , < [e} }be de}ep }h hbd{* ]bej mi{khjjek} }be Dh}hp nphd }be Dgij @hgpm gjm kbeko i}qi}b vpij}ep vhqep hnn*
Vpij}begm
]e{} De}bhm < Nhp ergdvce# vcgke hje cegm hj vij K7 gjm }be h}bep cegm hj]e{} vij 7 }h kbeko +7 vij hn }be Vpij}begm {hcejhim* ]e{}vij jud`ep{ dg}kb }be vpij}begm {hcejhim mh} qipe)jud`ep{*
JH]E< [e} }be de}ep }h hbd{* ]bej mi{khjjek} }be Dh}hp nphd }be Dgij @hgpm
gjm kbeko i} qi}b vpij}ep vhqep hnn*
[vekinikg}ihj{ < ;7*; 0*0 g} 05K)
Jh}e < 7z 0=< Qipe jud`ep{ Penep }h Niaupe 0$; ij Kbgv}ep 0 nhp qipe jud`ep{*)K7z K>< Khddhj }epdijgc{]< ]bepdi{}hp }epdijgc
]be khj}gk} hn }be khjjek}hp gjm NNK i{ vh{i}ihjem g} }be `h}}hd {ime hn }bekhjjek}hp*)
Niaupe ;$0* Vpij}begm Khjjek}hp Vij G{{iajdej}
]g`ce ;$75* Dh}hp Khic Pe{i{}gjke ]e{} Vhij}{
Dh}hp ]e{} Vij Jud`ep ]e{} De}bhm,De}ep
Pegmija
VN Dh}hp
KJ7;)
7 gjm ;#
0 gjm =
Vcgke hje cegm hj vij 7 vij0) gjm }be h}bepcegm hj vij; vij =) hj egkb hn }be }e{} vij{}h kbeko }be }qh dh}hp vbg{e{*
7>*6 76%g} 05 K vephje vbg{e)
KP Dh}hpKJ70)
Khddhj vij< 5]e{} vij{< 7# 0# ;gjm =
Vcgke hje cegm hj vij 5 gjm }be h}bep cegm hjegkb hn }be = }e{} vij{ }h kbeko }be }qh dh}hpvbg{e*
0*1 76%g} 05K vephje vbg{e)
K7 7# 2# 7># 0=
K0 0# ># 76# 72
K; ;# 1# 77# 75
K= =# 70# 06# 07
K5 5# 9# 7;# 71
K> 7=# 79# 00# 0;
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
64/128
KBGV]EP
=MI[G[[ED@CY GJM G[[ED@CY
EV[HJ CW$596(0696 Pe~i{ihj G
=*7 H~ep~ieq
]bi{ {ek}ihj me{kpi`e{ vphkemupe{ nhp mi{g{{ed`cija gjm g{{ed`cija EV[HJ NR$296(
=*7*0 ]hhc{ gjm Ij{}pudej}{
]be }g`ce `echq ci{}{ }be }hhc{ gjm }be ij{}pudej}{ pewuipem nhp mi{g{{ed`cija#g{{ed`cija hp gmlu{}ija }be vpij}ep U{e hjcy }hhc{ }bg} dee} }be{e {vekinikg}ihj{
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
65/128
Mi{g{{ed`cy gjm G{{ed`cy H~ep~ieq >5
0796* Ujce{{ h}bepqi{e {vekiniem# mi{g{{ed`cem uji}{ hp khdvhjej}{ kgj `e pe$g{{ed`cem y pe~ep{ija }be mi{g{{ed`cy vphkemupe* ]bepenhpe# jh g{{ed`cy vphkemupe{
gpe ijkcumem ij }bi{ {ek}ihj* Vpekgu}ihj{ nhp gjy mi{g{{ed`cy hp g{{ed`cy vphkemupe gpeme{kpi`em ujmep }be begmija KBEKO VHIJ]* Gjy gmlu{}dej}{ pewuipem gn}epmi{g{{ed`cija }be uji}{ gpe me{kpi`em ujmep }be begmija GMLU[]DEJ][*
=*7*7 Mi{g{{ed`cy Vpekgu}ihj{
Nhcchq }be vpekgu}ihj{ `echq qbej mi{g{{ed`cija }be vpij}ep*
g{{ed`cija hp gmlu{}ija }be vpij}ep* U{e hjcy }hhc{ }bg} dee} }be{e {vekinikg}ihj{*
JH]E*)
Gmlu{} }be vpij}ep hjcy ij }be dgjjep me{kpi`em ij }bi{dgjugc*
Gcqgy{ qegp ach~e{ nhp mi{g{{ed`cy gjm peg{{ed`cy }h g~him
iulupy nphd {bgpv de}gc emae{* ]h vph}ek} {ej{i}i~e dikphvphke{{hp{ gjm kipkui}py# u{e {}g}ik
mi{kbgpae ewuivdej}# {ukb g{ gj}i${}g}ik qpi{} {}pgv{# qbejgkke{{ija ij}epjgc khdvhjej}{*
@e gqgpe }bg} }be eri{}ija mpgqija{ nhp NR$296 gpe {u`{}i}u}emnhp NR$0796* I} i{ `ekgu{e jh erkcu{i~e mpgqija{ nhp NR$0796bg{ `eej dgme {ijke }be dglhp dekbgjikgc minnepejke `e}qeejNR$296 gjm NR$0796 i{ qim}b hjcy*
]g`ce =$7* ]hhc gjm Ij{}pudej} Ci{}
Jgde [vekinikg}ihj EV[HJ Vgp} Jh*
Vbicciv{ [kpeqmpi~ep Jh*0 @1=;266066
Vbicciv{ [kpeqmpi~ep Jh*7 @1=;266766
@hr Mpi~ep 1*6dd Migahjgc @1=7166066
]qee|ep{ $ @1=7666766
Phujm$jh{e vciep{ $ @1=6=66766
]bikoje{{ agae $ @11>160067
[hcmepija iphj $ @1=6066766
E$Pija bhcmep [i|e @1=6266266
EV[HJ CW$596(0696 Pe~i{ihj G
=*7*; [ep~ike Kbeko Gn}ep Pevgip
Gn}ep khdvce}ija pevgip hn }be vphmuk}# u{e }be kbeko ci{} {bhqj `echq }h kbeko }be{}g}u{ hn }be pevgipem vphmuk} gjm h~epgcc pevgip qhpo vepnhpdem `enhpe pe}upjija }be
Hvepg}ihj[ecn$]e{}
Qg{ }be {ecn$}e{} vpij}ijan c8
Kbekoem# HO
]g`ce =$0* Pevgip [}g}u{ Kbeko Ci{} "khj}ijuem)
Kg}eahpy Khdvhjej} I}ed }h Kbeko [}g}u{
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
66/128
Mi{g{{ed`cy gjm G{{ed`cy H~ep~ieq >>
v v v v avphmuk} }h }be u{ep{* ]bi{ ci{} kgj e u{em g{ g pekhpm hn gcc {ep~ike qhpo{ vepnhpdem
qi}b }be vphmuk}*
]g`ce =$0* Pevgip [}g}u{ Kbeko Ci{}
Kg}eahpy Khdvhjej} I}ed }h Kbeko [}g}u{
Vpij}epDekbgji{d
Vpij}begm Mh gcc qipe{ vpij} vphvepcy8 Kbekoem# HO
Jh} jeke{{gpy
KgppigaeDekbgji{d
Mh{e }be kgppigae dh~e {dhh}bcy8
Jhi{y
Gjy mip} hp erke{{i~e hic8
Kbekoem# HO
Jh} jeke{{gpy
I{ }be KP Dh}hp g} }be jhpdgc}edvepg}upe8 Jh} }hh bh}8)
Kbekoem# HO
Jh} jeke{{gpy
Vgvep NeemDekbgji{d
Mhe{ vgvep gm~gjke {dhh}bcy8
, Jhi{y8
, Vgvep i{ lgddija8
Kbekoem# HO
Jh} jeke{{gpy
I{ }be VN Dh}hp g} }be jhpdgc}edvepg}upe8 Jh} }hh bh}8)
Kbekoem# HO
Jh} jeke{{gpy
Vgvep Vg}b Mh gcc }yve{ hn vgvep gm~gjke{dhh}bcy8
Kbekoem# HO
Jh} jeke{{gpy
I{ }be }pgk}hp neemija vgvep{dhh}bcy8
Kbekoem# HO
Jh} jeke{{gpy
Gpe gcc vgvep vg}b{ kcegp hnh`{}puk}ihj{8
Kbekoem# HO
Jh} jeke{{gpy
I{ }be vcg}e npee hn mgdgae8 Kbekoem# HO
Jh} jeke{{gpy
Pi``hj Dg{o I{ }be pi``hj dg{o npee hn mgdgae8 Kbekoem# HO
Jh} jeke{{gpy
[ecn ]e{}{ukke{{nuc8 Jh} jeke{{gpy
Hj$cije ]e{} Qg{ }be hj$cije vpij}ija{ukke{{nuc8
Kbekoem# HO Jh} jeke{{gpy
Gmlu{}dej}Vcg}ej$Agv
I{ }be agv gmlu{}em khppek}cy8
VA 4 6*;2 6*60dd )
Kbekoem# HO
Jh} jeke{{gpy
@i$M Gciajdej}I{ }be @i$Mipek}ihjgc gciajdej}dgme vphvepcy8
Kbekoem# HO
Jh} jeke{{gpy
PHD ^ep{ihj Cg}e{} ~ep{ihj 4 Kbekoem# HO Jh} jeke{{gpy
VgkoijaPi``hj Kgp}pimae
Bg{ }be pi``hj kgp}pimae `eejpedh~em nphd }be vpij}ep8
Kbekoem# HO
Jh} jeke{{gpy
G}}gkbdej}{Bg~e gcc pece~gj} g}}gkbdej}{ eejvgkoem }hae}bep qi}b }be vpij}ep8
Kbekoem# HO
Jh} jeke{{gpy
EV[HJ CW$596(0696 Pe~i{ihj G
=*7*;*7 G``pe~ig}ihj{ nhp [dgcc Vgp}{
]be }g`ce `echq ci{}{ }be g``pe~ig}ihj{ u{em ij }bi{ dgjugc nhp {dgcc vgp}{# {ukb g{{kpeq{ gjm qg{bep{*
VPIJ]EP
]g`ce =$;* Ci{} hn [kpeq{ U{em
Jh* Jgde gjm {vekinikg}ihj [bgve
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
67/128
Mi{g{{ed`cy gjm G{{ed`cy H~ep~ieq >1
]g`ce =$;* Ci{} hn [kpeq{ U{em
Jh* Jgde gjm {vekinikg}ihj [bgve
7 K@[ D;r>)
0 K@[ D;r70)
;VCG[]IK BEGM
V ]I]E#=R7;
= K@V D=r70)
5 K@[ D;r2)
> K@V D;r2)
1 K@V D;r70)
2 K@[ D;r=)
9 K@[ D;r2) KV0)
76 K@ 6) D=r2)
77VPIJ]EP
DEKBGJI[D
DHUJ]IJA [KPEQ
70 KV D;r=)
7;[BGN]#DHUJ]#KP
D2r76)
7= K@ D;r>)
75 K@[ D;r76)
7>Bergahj ju}jhpdgcD=)
EV[HJ CW$596(0696 Pe~i{ihj G
=*0 Dgij Khdvhjej}{ Mi{g{{ed`cy
]bi{ {ek}ihj vph~ime{ }be mi{g{{ed`cy vphkemupe{* ]be `g{ik hpmep nhp mi{g{{ed`cy i{ {bhqj ij }be nchqkbgp} `echq* ]be ervchmem migapgd{ gpe gc{h vph~imem ij }be ErvchmemMigapgd{ vgae 775) Penep }h }bed }h {ee bhq khdvhjej}{ gpe ejagaem qi}b egkb h}bep in jeke{{gpy
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
68/128
Mi{g{{ed`cy gjm G{{ed cy Dgij Khdvhjej}{ Mi{g{{ed`cy >2
Migapgd{ vgae 775)* Penep }h }bed }h {ee bhq khdvhjej}{ gpe ejagaem qi}b egkb h}bep in jeke{{gpy*
Niaupe =$7* Mi{g{{ed`cy Nchqkbgp}
Vpe$mi{g{{ed`cy Vphkemupe{ "v*>9)
Uvvep Bhu{ija "v*17)
K552 DGIJ @hgpm "v*1;) K50=V[@(V[E(V[B @hgpm "v*15)
[]GP]
KP Dh}hp "v*26)
Peceg{e Me}ek}hp "v*25)
Vpij}ep Dekbgji{d Mi{g{{ed`cy "v*1>)
Vpij}begm "v*1>) BV "Bhde Vh{i}ihj) Me}ek}hp "v*11) Vcg}ej "v*12)
Kgppigae G{{ed`cy "v*21) Pegp Vgvep Auime G{{ed`cy "v*29)
VN Aegp ]pgij "v*2;)
VN Dh}hp "v*20)
Pi``hj Mpi~e "PM) G{{ed`cy "v*97)
VA "Vcg}ej Agv) Me}ek}hp "v*25)
Vpij}ep Dekbgji{d "v*19)
Pegp VE Me}ek}hp "v*2>)Nphj} VE "Vgvep Ejm) Me}ek}hp "v*2>)
Dgij Khdvhjej}{ Mi{g{{ed`cy
EV[HJ CW$596(0696 Pe~i{ihj G
=*0*7 Vpe$mi{g{{ed`cy Vphkemupe{
Pedh~e }be Vgvep Auime G{{ed`cy# }hv kh~ep# nphj} kh~ep# vgvep elek} kh~ep# ojh` gjm}pgk}hp uji}*
Vgvep Elek} Kh~ep
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
69/128
Mi{g{{ed`cy gjm G{{ed cy Dgij Khdvhjej}{ Mi{g{{ed`cy >9
Vgvep Auime G{{ed`cy* "[ee Niaupe =$0)
]hv kh~ep*"[ee Niaupe =$0)
Ojh`* "[ee Niaupe =$0)
Vgvep elek} kh~ep* "[ee Niaupe =$;)
Nphj} kh~ep* "[ee Niaupe =$=)
]pgk}hp uji}* "[ee Niaupe =$5)
Niaupe =$0* Vpe$Mi{g{{ed`cy
Niaupe =$;* Vgvep Elek} Kh~ep Pedh~gc
Niaupe =$=* Nphj} Kh~ep Pedh~gc
Vgvep Auime G{{ed`cy
Ojh`
]hv kh~ep
Nphj} Kh~ep
EV[HJ CW$596(0696 Pe~i{ihj G
KGU]IHJ Pedh~e }be vgvep elek} kh~ep gjm }be }pgk}hp uji} `y vu{bija gjm
peceg{ija }be bhho{ g} `h}b {ime{* Qbej pedhuj}ija }bed# `e {upe
}h {jgv }be{e bhho{ hj }be vphlek}ija vgp}{*
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
70/128
Mi{g{{ed`cy gjm G{{ed cy Dgij Khdvhjej}{ Mi{g{{ed`cy 16
Niaupe =$5* ]pgk}hp Uji} Pedh~gc
EV[HJ CW$596(0696 Pe~i{ihj G
=*0*0 Uvvep Bhu{ija
7* Vepnhpd Vpe$Mi{g{{ed`cy* "v*>9)
0* Pedh~e ; K@[ D;r2) {kpeq{ {ekupija }be uvvep bhu{ija }h }be chqep kg{e*
K@[ [kpeq ";r2)]iab}ejija ]hpwue< 6*52$6*12 J*d
K@[ [kpeq{ ";r2) r0]iab}ejija ]hpwue< 7*62 6*7 J*d
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
71/128
Mi{g{{ed`cy gjm G{{ed cy Dgij Khdvhjej}{ Mi{g{{ed`cy 17
"[ee Niaupe =$>)
;* [e} }be peceg{e ce~ep }h }be npik}ihj neem {ime*
=* Cin}ija }be nphj} {ime hn }be uvvep bhu{ija g ci}}ce# mi{ejagae }be bhho nhujm g} }becen} hn }be vgjec g{{ed`cy*
5* Vu{b hu} }be cen} {ime hn }be Vgjec G{{ed`cy {ciab}cy gjm }goe i} hu} y {bin}ija i} }h}be cen} g ci}}ce# gjm mi{khjjek} }be Vgjec NNK*
Niaupe =$>* Uvvep Bhu{ija Pedh~gc 7
Qbej ij{}gccija }be Vgjec G{{ed`cy# cegm }be cegm qipe{ hn }beKg{e Hvej [ej{hp g{ {bhqj `echq* Hvej }be uvvep bhu{ija nphd }be nphj} {ime# gjm pedh~e i}*
KGU]IHJ Qbej g{{ed`cija }be uvvep bhu{ija# vu} }be kg}kbija bhce{ ij
}be uvvep bhu{ija hj }be bhho{ g} }be pegp {ime hn }be chqep kg{e
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
72/128
Mi{g{{ed`cy gjm G{{ed cy Dgij Khdvhjej}{ Mi{g{{ed`cy 10
Niaupe =$1* Uvvep Bhu{ija Pedh~gc 0
}be uvvep bhu{ija hj }be bhho{ g} }be pegp {ime hn }be chqep kg{e
g} nip{}# }bej kch{e }be bhu{ija* "[ee Niaupe =$1)
Dhuj} }be Vgjec g{{ed`cy hj}h }be uvvep bhu{ija `enhpe
ij{}gccija }be uvvep bhu{ija g{{ed`cy*
[bee}# Peceg{e# Kgv kgj `e g{{ed`cem gn}ep }be uvvep bhu{ija
g{{ed`cy i{ ij{}gccem*
[bee}# Peceg{e# Kgv
Bhho{
Kg}kbija bhce{
EV[HJ CW$596(0696 Pe~i{ihj G
=*0*; K552 DGIJ @hgpm
KGU]IHJ ]be K552 DGIJ @hgpm bg{ }be dekbgjikgc mpi~e vhqep {uvvcy
~hc}gae "/=0^# ^v) dgjgaedej} kipkui} gjm gj ecek}pikgc
b } i }i n }b } m n }bi i i} i
K@[ [kpeq{ ";r>) r5]iab}ejija ]hpwue< 6*52$6*12 J*d
K@V [kpeq{ ";r70) r0]iab}ejija ]hpwue< 6*12$6*92 J*d
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
73/128
Mi{g{{ed`cy gjm G{{ed cy Dgij Khdvhjej}{ Mi{g{{ed`cy 1;
7* Vepnhpd Vpe$Mi{g{{ed`cy* "v*>9)
0* Pedh~e }be Uvvep Bhu{ija* "v*17)
;* Pedh~e 5 K@[ D;r>) {kpeq{ gjm 0 K@V D;r70) {kpeq{ {ekupija }be {biecmkh~ep }h }be Vpij}ep Dekbgji{d gjm chqep bhu{ija* ]bej pedh~e }be {biecm kh~ep*"[ee Niaupe =$2)
=* Mi{khjjek} gcc }be khjjek}hp{ khjjek}em }h }be K552 DGIJ @hgpm*"[ee Niaupe =$9) Niaupe =$2* K552 DGIJ @hgpm Pedh~gc 7
Niaupe =$9* K552 DGIJ @hgpm Pedh~gc 0
kbgpgk}epi{}ik hn }be khdvhjej}{ khdvh{em hn }bi{ kipkui} i{
deg{upem qi}b }be ku{}hd ij{}pudej}{ gjm peaucg}em g} }beg{{ed`cy vphke{{* Je~ep g}}edv} }h pevcgke gjy khdvhjej}{ hn
}bi{ kipkui} hj }be `hgpm# gjm mhija {h pe{uc}em ij mgdgaija }be
uji}*
@e kgpenuc qi}b }be emae{ hn }be {biecm vcg}e# g{ }bey gpe ~epy
{bgpv*
@e {upe }h dg}kb }be khjjek}hp khchp{ qi}b egkb h}bep*
]g`ce =$=*
KJ Jh* Vij{ Khchp Khjjek}em }h
KJ5 0 @cue VA Me}ek}hp KJ> 0 @cgko Nphj} VE Me}ek}hp KJ1 ; Qbi}e Pegp VE Me}ek}hp KJ2 0 Qbi}e BV Me}ek}hp
KJ77 0 Yecchq Peceg{e Me}ek}hp KJ70 5 Pem KP Dh}hp KJ7; = Qbi}e VN Dh}hp KJ7= 76 $ K50=V[@(V[E(V[B @hgpmKJ75 NVK) Vpij}begmKJ7> NVK) Vpij}begmKJ79 0 Qbi}e NgjKJ06 NVK) Vgjec
[biecm Kh~ep
Jh {kpeq bepe"[kpeq nhp }iab}ejija }beUvvep Bhu{ija }hae}bepdu{} `e ij{}gccem cg}ep)
EV[HJ CW$596(0696 Pe~i{ihj G
5* Pedh~e }be 0 K@[ D;r70) {kpeq{ {ekupija }be KH^EP#KHJJEK]HP#UVVEPhp }be hv}ihjgc ]yve$@ I(N @hgpm }h }be I(N APHUJMIJA VCG]E* "[ee Niaupe=$76)
>* Pedh~e }be > K@V D;r70) {kpeq{ {ekupija }be K552 DGIJ @hgpm }h }be chqep
K@V [kpeq{ ";r70) r>]iab}ejija ]hpwue< 6*96*7 J*d
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
74/128
Mi{g{{ed`cy gjm G{{ed cy Dgij Khdvhjej}{ Mi{g{{ed`cy 1=
kg{e*
1* Cin} }be pegp {ime hn }be I(N APHUJMIJA VCG]E {ciab}cy gjm pedh~e }be I(NAPHUJMIJA VCG]E }hae}bep qi}b }be K552 DGIJ @hgpm*
2* Pedh~e }be ; KV D;r=) {kpeq{ {ekupija }be I(N APHUJMIJA VCG]E }h }beK552 DGIJ @hgpm* ]bej pedh~e }be I(N APHUJMIJA VCG]E*
Niaupe =$76* K552 DGIJ @hgpm Pedh~gc ;
Cegm }be cegm qipe{ g{ {bhqj `echq9)
0* Pedh~e }be Uvvep Bhu{ija* "v*17)K@V [kpeq{ ";r70) r0KJ7
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
75/128
Mi{g{{ed`cy gjm G{{ed cy Dgij Khdvhjej}{ Mi{g{{ed`cy 15
;* Pedh~e }be {biecm kh~ep* "[ee Niaupe =$2)
=* Mi{khjjek} }be bgpje{{ nphd }be khjjek}hp KJ7= hj }be K552 DGIJ @hgpm*"[ee Niaupe =$77)
5* Mi{khjjek} }be vhqep kg ce nphd }be khjjek}hp KJ7 hj }be K50=V[@(V[E(V[B@hgpm*
>* Pedh~e }be 0 K@V D;r70) {kpeq{ {ekupija }be K50=V[@(V[E(V[B @hgpm }h }beChqep Kg{e# gjm pedh~e }be K50=V[@(V[E(V[B @hgpm*
Niaupe =$77* K50=V[@(V[E(V[B @hgpm Pedh~gc
QGPJIJA @enhpe mi{g{{ed`cija# g{{ed`cija hp gmlu{}ija }be vpij}ep#
mi{khjjek} }be vhqep {uvvcy kg`ce nphd }be GK vhqep {hkoe}*
Ngicupe }h mh {h diab} kgu{e vep{hjgc ijlupy*
Mh jh} }hukb }be beg} {ijo g}}gkbem }h }be {qi}kbija NE] "W7)
hj }be vhqep {uvvcy `hgpm piab} gn}ep vhqep hnn g{ i} dgy `e
~epy bh}*
KJ7=
K@V [kpeq{ ";r70) r0]iab}ejija ]hpwue< 6*226*7 J*d
K50=V[@(V[E(V[B @hgpm
KJ7
EV[HJ CW$596(0696 Pe~i{ihj G
=*; Vpij}ep Dekbgji{d Mi{g{{ed`cy
=*;*7 Vpij}begm
7 P b "[ Ni = 0) K@[ K"V0)
Pi``hj Dg{o
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
76/128
Mi{g{{ed`cy gjm G{{ed cy Vpij}ep Dekbgji{d Mi{g{{ed`cy 1>
7* Pedh~e }be }hv kh~ep*"[ee Niaupe =$0)
0* Pedh~e }be 0 K@[ K V0) D;r2) {kpeq{ {ekupija }be Vpij}begm }h }be KgppigaeG{{ed`cy*"[ee Niaupe =$70)
;* Mi{khjjek} }be begm NNK nphd }be Vpij}begm gjm pedh~e i}*
Niaupe =$70* Vpij}begm Pedh~gc
QGPJIJA @e kgpenuc qi}b }be Vpij}begm qbej yhu bgjmce i}# g{ i} dgy e ~epy
bh} piab} gn}ep vpij}ija*
GMLU[]DEJ]
PEWUIPEM
Gn}ep ij{}gccija }be Vpij}begm# dgoe }be nhcchqija gmlu{}dej}{)
Qbej ij{}gccija }be Vpij}begm qi}b }be Begm NNK# vu} }be
Begm NNK ujmep }be bhho hn }be kgppigae `g{e*
Dgoe {upe }bg} }be Begm NNK i{ vphvhepcy khjjek}em }h }be
vpij}begm* Mh jh} khjjek} }be Begm NNK g} gjace# }h g
khjjek}hp ei}bep hj }be vpij}begm hp }be K552 DGIJ @hgpm*
Qbej pevcgkija }be Vpij}begm# `e {upe }h pevcgke }be Pi``hj
Dg{o Bhcmep "qi}b }be Pi``hj Dg{o) g} }be {gde }ide* Gcc
pecg}em vgp}{ gpe g~gicg`ce g{ g oi} g{ `echq*
BEGM OI]# G[V
Khme< 7019=96
Begm NNK
Bhho
K@[ K"V0)
[kpeq{ ";r2) r0]iab}ejija ]hpwue< 6*16*7 J*d
Vpij}begm
Pi``hj Dg{o Bhcmep
EV[HJ CW$596(0696 Pe~i{ihj G
=*;*0 BV "Bhde Vh{i}ihj) Me}ek}hp
7* Pedh~e }be }hv kh~ep* "[ee Niaupe =$0)
0* Peceg{e }be bhho g}}gkbija }be BV me}ek}hp }h }be Vpij}ep Dekbgji{d# gjm pedh~ei}* "[ee Niaupe =$7;)
Bhho
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
77/128
Mi{g{{ed`cy gjm G{{ed cy Vpij}ep Dekbgji{d Mi{g{{ed`cy 11
i}* "[ee Niaupe = 7;)
;* Mi{khjjek} }be bgpje{{ hn }be me}ek}hp nphd }be me}ek}hp khjjek}hp*
Niaupe =$7;* BV Me}ek}hp Pedh~gc
Bgpje{{
Bhho
BV Me}ek}hp
EV[HJ CW$596(0696 Pe~i{ihj G
=*;*; Vcg}ej
7* Vepnhpd Vpe$Mi{g{{ed`cy* "v*>9)
0* Pedh~e }be 0 K@[ D;r2) {kpeq{ {ekupija }be KH^EP#VCG]EJ* "[ee Niaupe=$7=)
K@[ [kpeq{ ";r2) r0]iab}ejija ]hpwue< 6*96*7J*d
@u{bija# 2# Cen}
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
78/128
Mi{g{{ed`cy gjm G{{ed cy Vpij}ep Dekbgji{d Mi{g{{ed`cy 12
)
;* Ph}g}ija }be }ee}b hn }be @u{bija# 2# Piab} gjm @u{bija 2 Cen} nhpqgpm# mi{ejagae}bed nphd }be Cen}(Piab} [ime Npgde*
=* Dh~e }be kgppigae }h }be piab} ejm# cin} }be cen} {ime hn }be vcg}ej {ciab}cy# dh~e }bekgppigae }h }be kej}ep gjm pedh~e }be vcg}ej }h }be cen}* "[ee Niaupe =$75)
Niaupe =$7=* Vcg}ej Pedh~gc 7
Niaupe =$75* Vcg}ej Pedh~gc 0
KGU]IHJ ]goe kgpe jh} }h ku} yhup nijaep hj }be de}gccik npgde hp hj }be
VGVEP AUIME G[[Y*# [UVVHP]*
Qbej ij{}gccija }be KH^EP# VCG]EJ# dgoe {upe }bg} }be bhho
hj }be piab} {ime hn }be KH^EP# VCG]EJ i{ ejagaem qi}b }be aegp
{bgn} hj }be piab} {ime hn }be Vpij}ep Dekbgji{d G{{y vphvepcy*
GMLU[]DEJ]
PEWUIPEM
Gn}ep ij{}gccija }be Vcg}ej# dgoe }be nhcchqija gmlu{}dej}9)
0* Pedh~e }be Uvvep Bhu{ija* "v*17)
; Pedh~e }be {biecm kh~ep "[ee Niaupe =$2)
K@@ "Q7;# D;r7=) [kpeq{ r=]iab}ejija ]hpwue< 7*7 6*7J*d
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
79/128
Mi{g{{ed`cy gjm G{{ed cy Vpij}ep Dekbgji{d Mi{g{{ed`cy 19
;* Pedh~e }be {biecm kh~ep*"[ee Niaupe =$2)
=* Mi{khjjek} gcc }be khjjek}hp{ khjjek}em }h }be K552 DGIJ @hgpm*"[ee Niaupe =$9)
5* Pedh~e }be 0 K@V D;r2) {kpeq{ {ekupija }be DHUJ] BHU[IJA }h }be chqepbhu{ija# gjm pedh~e }be DHUJ] BHU[IJA* "[ee Niaupe =$7>)
>* Pedh~e }be = K@@ Q7;# D;r7=) {kpeq{# gjm pedh~e }be Vpij}ep Dekbgji{d `ycin}ija i} uv*
Niaupe =$7>* Vpij}ep Dekbgji{d Pedh~gc 7
GMLU[]DEJ]
PEWUIPEM
Gn}ep ij{}gccija }be Vpij}ep Dekbgji{d# dgoe }be nhcchqija
gmlu{}dej})
Vh{i}ihj }be KP Dh}hp g{{ed`cy hj }be DHUJ]IJA
VCG]E#DH]HP#KP khppek}cy g{ {bhqj `echq?
Cegm }be NNK gjm cegm qipe{ g{ {bhqj `echq) r0]iab}ejija ]hpwue< 6*9 6*7J*d
DHUJ]IJAVCG]E#DH]HP# KP
EV[HJ CW$596(0696 Pe~i{ihj G
=*;*> VN Dh}hp
7* Pedh~e }be Vpij}ep Dekbgji{d* "v*19)
0* Peceg{e }be dh}hp bgpje{{ nphd }be Vpij}ep Dekbgji{d* "[ee Niaupe =$79)
;* Chkg}e }be peceg{e ce~ep Ce~ep# Peceg{e) ij }be nhpenphj} vh{i}ihj ]pgk}hp K@[ [kpeq ";r76)]iab}ejija ]hpwue< 6 9 6 7J d
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
82/128
Mi{g{{ed`cy gjm G{{ed cy Vpij}ep Dekbgji{d Mi{g{{ed`cy 20
Vh{i}ihj)*
=* Pedh~e }be 0 K@[ D;r76)# K@ D;r2)) {kpeq{ {ekupija }be VN Dh}hp }h }beNPGDE#[U@#PIAB]# gjm pedh~e }be VN Dh}hp*
Niaupe =$79* VN Dh}hp pedh~gc
KGU]IHJ In }be peceg{e ce~ep i{ {e} }h }be Npik}ihj neemija vh{i}ihj# VN Dh}hp
i{ jh} peceg{em*
]iab}ejija ]hpwue< 6*9 6*7J*d
K@ [kpeq ";r2)]iab}ejija ]hpwue< 6*9 6*7J*d
VN Dh}hp
BHCMEP# KG@CE
EV[HJ CW$596(0696 Pe~i{ihj G
=*;*1 VN Aegp ]pgij
7* Pedh~e }be Vpij}ep Dekbgji{d* "v*19)
0* Pedh~e }be VN Dh}hp* "v*20)
;* Chkg}e }be peceg{e ce~ep Ce~ep# Peceg{e) ij }be nhpenphj} vh{i}ihj ]pgk}hp
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
83/128
Mi{g{{ed`cy gjm G{{ed cy Vpij}ep Dekbgji{d Mi{g{{ed`cy 2;
Vh{i}ihj)*=* Pedh~e }be begm NNK nphd }be NPGDE#[U@#PIAB] hn }be Vpij}ep Dekbgji{d*
"[ee Niaupe =$06)
5* Pedh~e }be 0 K@[ D;r2)# K@ D;r2)) {kpeq{ {ekupija }beNPGDE#[U@#PIAB]# gjm pedh~e }be NPGDE#[U@#PIAB]*
Niaupe =$06* VN Aegp ]pgij Mi{g{{ed`cy 7
Begm NNK
K@[ [kpeq{ ";r2)]iab}ejija ]hpwue< 6*9 6*7J*d
NPGDE#[U@#PIAB]
K@ [kpeq{ ";r2)]iab}ejija ]hpwue
< 6*96*7J*d
EV[HJ CW$596(0696 Pe~i{ihj G
Cu`pikg}ihj i{ jeke{{gpy g} }qh vhij}{*
"Nhp me}gic{# penep }h Cu`pikg}ihj "v*767) ij Kbgv}ep >*)
Vgy g}}ej}ihj }h }be aegp ejagaedej} vh{i}ihj hn }be
CE^EP#PECEG[E*
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
84/128
Mi{g{{ed`cy gjm G{{ed cy Vpij}ep Dekbgji{d Mi{g{{ed`cy 2=
Niaupe =$07* VN Aegp ]pgij Mi{g{{ed`cy 0
Nhp g{{ed`cy# nhcchq }be nhcchqija vphkemupe
;* Mi{khjjek} }be bgpje{{ nphd }be me}ek}hp*
Niaupe =$0=* Nphj} VE Me}ek}hp Pedh~gc
=* Peceg{e }be 0 jh}kbe{ hj }be Pegp Vgvep Auime G{{ed`cy {ekupija }be me}ek}hp#gjm {cime }be me}ek}hp }hqgpm pegp g ci}}ce* ]bej pedh~e }be me}ek}hp `y vuccija i}mhqjqgpm* "[ee Niaupe =$05)
5* Mi{khjjek} }be bgpje{{ nphd }be me}ek}hp*
Niaupe =$05* Pegp VE Me}ek}hp Pedh~gc
Nphj} VEMe}ek}hp
Bgpje{{
Pegp Vgvep AuimeG{{ed`cy
Kciv{
7
7
0
Pegp VE Me}ek}hp
Bgpje{{
EV[HJ CW$596(0696 Pe~i{ihj G
=*;*70 Kgppigae G{{ed`cy
7* Pedh~e }be Vpij}ep Dekbgji{d* "v*19)
0* Pedh~e }be Begm NNK* "[ee vgae 1>)
;* Pedh~e }be Vcg}ej* "v*12)
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
87/128
Mi{g{{ed`cy gjm G{{ed cy Vpij}ep Dekbgji{d Mi{g{{ed`cy 21
=* Pedh~e }be KP Dh}hp* "v*26)
5* Pedh~e }be bergahj ju} D=) gjm }be qg{bep {ekupija }be CE^EP#A#GMLU[] }h}be [BGN]#KP#AUIME# gjm pedh~e }be ce~ep* "[ee Niaupe =$0>)
>* Pedh~e }be @U[BIJA#VGPGCCEC#GMLU[] }h }upj }be [BGN]#KP#AUIME*
Niaupe =$0>* Kgppigae G{{ed`cy Pedh~gc 7
@U[BIJA# VGPGCCEC#GMLU[]
Bergahj Ju} "=)]iab}ejija ]hpwue< }gdvhpgpy"g`hu} 0Oankd)
CE^EP# A# GMLU[]
EV[HJ CW$596(0696 Pe~i{ihj G
1* Dh~e }be Kgppigae G{{ed`cy }h }be piab} ejm# gjm pedh~e i} nphd }be pgko hn }beNPGDE#NPHJ] qi}b }be [BGN]#KP#AUIME* "[ee Niaupe =$01)
2* Peceg{e }be ]IDIJA @EC] nphd }be 0 kciv{ g} }be `h}}hd hn }be KgppigaeG{{ed`cy*
GMLU[]DEJ] Gn}ep ij{}gccija }be Kgppigae G{{ed`cy dgoe }be nhcchqija
]IDIJA @EC]
Kciv{
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
88/128
Mi{g{{ed`cy gjm G{{ed cy Vpij}ep Dekbgji{d Mi{g{{ed`cy 22
Niaupe =$01* Kgppigae G{{ed`cy Pedh~gc 0
GMLU[]DEJ]PEWUIPEM Gn}ep ij{}gccija }be Kgppigae G{{ed`cy# dgoe }be nhcchqijagmlu{}dej}{)
Cu`pikg}ihj i{ jeke{{gpy g} }bpee vhij}{*
"Nhp me}gic{# penep }h Cu`pikg}ihj "v*767) ij Kbgv}ep >*)
Qbej g}}gkbija }be ]IDIJA @EC] }h }be Kgppigae G{{ed`cy#
{ekupe }be ]IDIJA @EC] qi}b }be cen} gjm piab} kciv{ ij }be
Kgppigae G{{ed`cy# g{ {bhqj `echq# gjm ej{upe }bepe i{ jh
{cgko ij }be ]IDIJA @EC]*
Dgoe {upe }bg} }be aphh~e nhp }be pgic ij }be nphj} hn }be
Kgppigae G{{ed`cy i{ ni}}em hj }be pgic hn }be NPGDE# NPHJ]*
Kciv
3JA: 3HO:
]IDIJA @EC]
Npgde# NPHJ]
KgppigaeG{{ed`cy
[BGN]# KP# AUIME
Kciv{
EV[HJ CW$596(0696 Pe~i{ihj G
=*;*7; Pegp Vgvep Auime G{{ed`cy
7* Pedh~e }be Vpij}ep Dekbgji{d* "v*19)
0* Pedh~e }be Vcg}ej* "v*12)
;* Pedh~e }be bergahj ju} gjm }be qg{bep {ekupija }be CE^EP#A#GMLU[] }h }be
[BGN] KP AUIME m }b c "[ee Niaupe = 0>)
K@[ [kpeq{ ";r>) r;]iab}ejija ]hpwue< 6*9 6*7J*d
Bhcmep V cce
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
89/128
Mi{g{{ed`cy gjm G{{ed cy Vpij}ep Dekbgji{d Mi{g{{ed`cy 29
[BGN]#KP#AUIME# gjm pedh~e }be ce~ep* "[ee Niaupe =$0>)=* Pedh~e }be @U[BIJA#VGPGCCEC#GMLU[] }h }upj }be [BGN]#KP#AUIME*
"[ee Niaupe =$0>)
5* Pedh~e }be bgpje{{ nhp VA Me}ek}hp* "[ee vgae 25)
>* Pedh~e }be bgpje{{ nhp BV Me}ek}hp* "[ee vgae 11)
1* Pedh~e }be K@[ D;r2) {kpeq {ekupija }be Bhcmep Vuccey Mpi~ej }h }be CEN]NPGDE# gjm pedh~e }be Bhcmep Vuccey Mpi~ej* "[ee Niaupe =$02)
2* Pedh~e ; K@[ D;r2) {kpeq{ {ekupija }be CEN] NPGDE ij }be Vpij}epDekbgji{d*
9* Pedh~e }be Begm NNK nphd }be NPGDE#PEGP ij }be Vpij}ep Dekbgji{d*Gjm peceg{e gcc }be kg`ce{ nphd }be bhho{ hj }be NPGDE#PEGP*"[ee Niaupe =$09)
Niaupe =$02* Pegp Vgvep Auime G{{ed`cy Pedh~gc 7
;
Niaupe =$09* Pegp Vgvep Auime G{{ed`cy Pedh~gc 0
CEN] NPGDE K@[ [kpeq{ ";r2)]iab}ejija ]hpwue< 6*96*7J*d
Bhcmep VucceyMpi~ej
NPGDE#PEGP
Begm NNK
NPGDE#[U@#PIAB]
EV[HJ CW$596(0696 Pe~i{ihj G
76* Peceg{e }be kg`ce{ nphd }be BHCMEP#KG@CE hj }be PIAB] NPGDE# gjmpedh~e }be BHCMEP#KG@CE nphd }be PIAB] NPGDE*
77* Pedh~e }be K@[ D;r2) {kpeq {ekupija }be NPGDE#PEGP }h }be PIAB]NPGDE# gjm pedh~e }be Pegp Vgvep Auime G{{ed`cy* "[ee Niaupe =$;6)
70* Vu{b gjm {cime }be kciv hj }be cen} {ime hn }be Pegp Vgvep Auime G{{ed`cy cg}epgccy#
gjm {evgpg}e }be Pegp Vgvep Auime G{{ed`cy gjm }be NPGDE PEGP nphd egkb
NPGDE#PEGP
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
90/128
Mi{g{{ed`cy gjm G{{ed cy Vpij}ep Dekbgji{d Mi{g{{ed`cy 96
gjm {evgpg}e }be Pegp Vgvep Auime G{{ed`cy gjm }be NPGDE# PEGP nphd egkbh}bep*
Niaupe =$;6* Pegp Vgvep Auime G{{ed`cy Pedh~gc ;
Cu`pikg}ihj i{ jeke{{gpy*
"Nhp me}gic{# penep }h Cu`pikg}ihj "v*767) ij Kbgv}ep >*)
Qbej g}}gkbija }be Bhcmep Vuccey Mpi~ej }h }be CEN]
NPGDE# vu} }be bhho hn }be Bhcmep Vuccey Mpi~ej hj }be {bgn}
hn mpi~ej vuccey g} }be Pi``hj Mpi~e G{{ed`cy*
Ij{}gcc }be PIAB] NPGDE gjm Pegp Vgvep Auime G{{ed`cy {h
}bg} }be Peceg{e [bgn} i{ vh{i}ihjem g{ {bhqj `echq gjm }be
CE^EP#PECEG[E i{ ij }be Vucc ]pgk}hp vh{i}ihj "nhpenphj}
vh{i}ihj)* Gn}ep ij{}gccg}ihj# dgoe kep}gij }bg} }be CE^EP#
PECEG[E dh~e{ {dhh}bcy*
[bgn} VucceyMpi~ej
Bhcmep Vuccey Mpi~ej
Peceg{e [bgn}
Vh{i}ihj Phccep G{{y*#VN g{ {bhqj
K@[ [kpeq{ ";r2)]iab}ejija ]hpwue< 6*96*7J*d
Kciv
BHCMEP# KG@CE
EV[HJ CW$596(0696 Pe~i{ihj G
=*;*7= Pi``hj Mpi~e "PM) G{{ed`cy
7* Pedh~e }be Vpij}ep Dekbgji{d* "v*19)
0* Pedh~e }be Vcg}ej* "v*12)
;* Pedh~e }be bergahj ju} gjm }be qg{bep {ekupija }be CE^EP#A#GMLU[] }h }be
[BGN] KP AUIME gjm pedh~e }be ce~ep "[ee Niaupe =$0>)
K@[ K"V0) [kpeq ";r2)]iab}ejija ]hpwue< 6*9 6*7J*d
7/23/2019 Epson LQ-590, LQ-2090 Service Manual
91/128
Mi{g{{ed`cy gjm G{{ed cy Vpij}ep Dekbgji{d Mi{g{{ed`cy 97
[BGN]#KP#AUIME# gjm pedh~e }be ce~ep* "[ee Niaupe = 0>)=* Pedh~e }be @U[BIJA#VGPGCCEC#GMLU[] }h }upj }be [BGN]#KP#AUIME*
"[ee Niaupe =$0>)
5* Pedh~e }be bgpje{{ nhp VA Me}ek}hp* "[ee vgae 25)
>* Pedh~e }be bgpje{{ nhp BV Me}ek}hp nphd }be CEN] NPGDE* "[ee vgae 11)
1* Pedh~e }be K@[ D;r2) {kpeq {ekupija }be Bhcmep Vuccey Mpi~ej }h }be CEN]NPGDE# gjm pedh~e }be Bhcmep Vuccey Mpi~ej* "[ee Niaupe =$02)
2* Pedh~e }be ; K@[ D;r2) {kpeq{ {ekupija }be CEN] NPGDE ij }be Vpij}epDekbgji{d# gjm pedh~e }be CEN] NPGD