Panasonic KX-W1500 User manual

verVIC
GRDER NO. KME8804079C1
Manual
Personal Word Processor
KX-W1500
Specifications
Print Unit
Print Speed: 12 CPS
Print Element:
Typing Pitch:
Line Spacing:
Paper Width:
Writing Line:
Paper Capacity:
Ribbon Cassette:
Correction Tape:
Keyboard:
Memory
Correction Memory:
Text Memory:
Line Formats:
Battery Backup:
Spell Verify
Basic Dictionary:
User’ Dictionary:
CRT Display
Type:
Number of Chrs:
Floppy Disk
Disk Drive:
Capacity:
Cassette Type Daisy
Wheel (Mono Plastic)
96 Characters
10, 12, 15 CPI -
1, 14, 2 Lines
12” (304mm)
10” (254mm)
Original+-1
Correctable,
Fabric (Option)
Lift-Off,
Cover-Up (Option)
45 Alpha/Numeric
keys
1 Line
56 KB (56,000 Characters)
3 Formats
5 Years (Approx.)
63,000 words
120 words (8 char./word)
9” CRT
80 Characters X25 Line
3.5” Micro Floppy Disk Drive (1 Drive)
353 KB/Disk
Power Requirements
Voltage:
Frequency:
120V+10%
60Hz
Power Consumption: 50W (AC Use)
Operating Condition
Temperature:
Humidity:
Dimensions:
Weight:
Panasonic
5°C (41°F) to 35°C (95°F)
20% ~80%RH
Height 10%" (258mm) X Width 17%” (451mm) X Depth 13%” (334mm)
Approx. 9.8Kg (21% Ibs)
Panasonic Hawaii Inc.
91-238 Kauhi St. Ewa Beach
P. O. Box 774
Honolulu, Hawaii 96808-0774
Matsushita Services Company
50 Méadowland Parkway.
Secaucus, New Jersey 07094
Panasonic Sales Company,
Division of Matsushita Electric
of Puerto Rico, Inc.
Ave. 65 De infanteria, KM9.7
f Victoria Industrial Park
Matsushita Electric Carolina, Puerto Rico 00630
of Canada Limited
5770 Ambier Drive, Mississauga,
Ontano, L4W 2T3

Safety Precautions
Caution
No modification of any circuit should be attempted. Service should only be performed sets you are thoroughly er
familiar with all of the following safety checks and service guide lines.
Safety Check
Care should be taken while servicing this display unit because of the high voltage used in the deflection
circuits. These voltages are exposed in such areas as the associated flyback and yoke circuits.
Fire and Shock Hazard
1. When servicing, pay attention to the original lead routing, especially in the high voltage circuit. If a short circuit
is found, replace all parts which have been overheated or damaged by the short circuit.
2. All protective devices must be reinstalled per original design.
3. Soldering must be inspected for possible cold solder joints, frayed leads, damaged insulation, solder splashes
or sharp solder points.
Be certain to remove all foreign material.
Implosion
Protection
ee
All
Panasonic
picture
tubes
are
equipped
with
an
integral
implosion
protection
system,
but
care
should
be
taken
to
avoid
damage
and
scratching
during
installation.
Use
only
a
Panasonic
replacement
picture
tube.
X-Radiation
Warning: The only potential source of X-Radiation is the picture tube.
However when the high voltage circuitry is operating properly there is no possibility of an X-Radiation
problem. The basic precaution which must be exercised is to keep the high voltage at the following fac-
tory-recommended level.
Note: It is important to use an accurate periodically calibrated high voltage meter.
1.
To
measure
the
high
voltage,
connect
a
high
voltage
meter
(electrostatic
type)
to
the
unit
(©
to
chassis
ground
and
@
to CRT
anode).
2. Turn the brightness control fully to the left (minimum brightness).
3. Measure the high voltage. The high voltage meter reading should indicate 12.7KV += O.5KV.
4.
If
the
meter
indication
is
out
of
tolerance,
immediate
service
is
required
to
prevent
the
possibility
of
premature
component
failure.
5.
To
prevent
the
possibility
of
X-Radiation,
it
is
essential
to
use
the
specified
picture
tube.
Any
attempt
to
substi-
tute
a
tube
of
a
different
manufacturer
of
color
can
result
in
a
serious
X-Radiation
hazard
and
component
fai-
lure.
Important Safety Notice
There
are
special
components
used
in
the
Panasonic
Word
Processor
unit
which
are
important
for
safety.
These
parts
are
shaded
on
the
schematic
diagram
and
marked
A\
on
the
replacement
parts
list.
It
is
essential
that
these
critical
parts
should
be
replaced
with
manufacturer's
specified
parts
only
to
prevent
X-
RADIATION,
shock,
fire
or
other
hazards.
Do
not
modify
the
original
design
without
written
permission
form
Panasonic
Company
or
this
will
void
the
original
parts
guarantee.
aM

INDEX
Section 1 General Information
1.1
1.2.
Function Key Location ooo... ec ecceecceecesecenerseeeaseesecsseesesseseaeceaeesateranerentees vate sseedutVesavenelidandeutihedeaigiaeseoeat 4
List:of Code Key: FUNRCHIONS : 20s écccveccasceciesdand sees iden cdvaudacet niobate Nadhes heal eyes gad nest tte eden dave rete daeees th 5
Section 2 General Removal and Replacement Procedures
2.1 Reat COVEM 0.0... eeececeeeerreees i oes Bese Povaate veal eeid ca sehads dale Sedeea cateet steam antaedeeeantsedaten autaniabeiisdectieederdteteadeiee atte 6
2.2 Mechanisini: Unity. ::2.ccc5.d.ccsaececch iach steteos ets ogc vorgsvsvenbontiss tease inaye reach Sete oeies sacescavelscsebausasiacazedea ich surebutdeenteaugeee 6
2.3 Mairi: Logic: BOaid 2: sicccc.csccescd cies Pistnceds bieied eas despancuate Corry esteteenat cad sebusvavenieitees deddiaes Pridnebasiacedentner cen ce taee er etter 7
2.4 Power Supply ?.scs.cccsuisteck Nice iri Ail stee ctetesees rete techn ethereal cetera tins gente OG ig teaatleet 7
2.5 Floppy: Disk: Drive: Uniti: .eiicsccc Sevcie cd anehitiactteinle hast teat ole a nteiele Shais Nell a eltaiaa hh tail aa 8
2.6 Video Board ou... eee eee sisepusveheg bustbestheven clossauvesees tea debs potas puesta sihevibioslansisbes Nidvsegeuteaididides stesstestegebitens 9
2.7 CRY- Display: Tube ..ccc02escecieicccceesas citeedesitive Sasha le daabs vec iee eb vek babi oel heaves os nada hoa debelaig an davbedeacbhi Medvaviadials 10
2.8 PC. CON segs cscs cicepeecccscoseceat she veSeies Teak Fah ae ede senh abc Fak Oa LT he IG eo Bed eA aT Gs 11
2.9 FROME: COVGR 55sec Rocca odes ced Based casa ciaac cts ce eee sk eee TA oe 12
2:10: “Keyboard Units his hcici Savoie Secchi concatenate a 13
Section 3 Logic Board Connection Diagram... cece eee eeenescsseeeeneeseesnesesensessiatsneneen 14
Section 4 Printing Mechanism
4.1 Removal and Replacement Procedures oo... cc cccecceceerecseecsecsseceseeeseeesseeceaeersuecsaeeseaeessaeessnaeesateveeeartags 15
4.4.1 Carriere vo dg deabasaachybidowedieceaadevalecudeedens evista ctaetaus ull pbisusshesuvexceneatdeaeh dy eteugduedgnevviceetseceauee Qoveenaieesseaeavs 15
4x12 RIDDOM: HOMER Ss.ssccesccesesestes iecevsd acne hetice fa cctacbe Wiens uandad ote ete Soa dea bag cdaasoaeesabneeaea Geeddies die gerassbe ea detente 15
4.1.3: “Ribbon: Feed Motors: :csssccescsdeesc. a ecpesoseveuea cds apes buaeeeastes endl diva cdavhancsasnuedencaveccyenediensuceataWieensradeasteveiconaseatiy 15
ANAS “DAISY DRIVE UII sccectesscceacize cdots onadsareseed isos decatus icenibee,Lannte None coach dtu beiaae twtdanadenanenl Meeeledectudeblia cocsbanyel sieand ides 16
4.1.5 Hammer and Hammer Solenoid ..........::cccsccesseeceeeeceeeneseeseseeecesneessaeesceeeeeeeecneceeseaeeseeetessneeseenvaeesenateeaeeentee 16
4:46. DaisyWhEel: MOON scscccescccez cccscceesateovecadsecedunbses evi dha ceusscodenesvevovavcesdeenth covacecs dacendead buna cccduveuses sadedetoverdgunisatieds 16
ANT. “Catriel: SPAaCing, MOU sess ies ss ed yaa chs cassie as oaks cette saa be ckastedee snail cadbnte thevetas ete neuen bidaedaeasiaed abled eae 17
41:8 “Paper FESO: MOOK cce.cesstcvcseesoe ccaeascoteideugs Sac sip ecvteetna cine okt ges Aivazed canedatel. Seetendseecasaeseyeesoccaees otlatebowecayeedsashuntes 17
AlAS9:. “ Caitriek: Cables ariccsloscsisedcecscescoctian ened i pcestecgsghedeesyeathsieaasecectennch bens Made chuchs suction dees desdteacebviecsalt a aatiegea selena eh 17
4.1.10 Carrier. Cable" Winding. «..2vc anes tleien ide eetsiodi a ieieele ed one dita chelation donaaineds 18
4.2 Mechanical Functions and Adjustments .:..............ccccccseeeseccsneeceseceeeeetsereeescneeceneasecsaeeeesneeeseeentesnatesseeenas 19
4.2.1 Paper Feed Mechanism ............cessccesssscecesssesseesteesssnceessneesseeeseessseeessseaeecesneneeenes sitivivedgustereacdusveusdalgiideneveds 19
4:2:2) . Paper Feed Motor vei. ciecsicuier cue, Sieiecagutt lisse ccaese sceyonen vents Sete ilcosons yea cea tashanesegids atebaatestendtesise jodaanaisevartas Stace beaux 19
4:2:3° LING SPacCe-DCteMty sn scciiicccceissczescasctescaescencevevbeeded saddens caves beieaueel exstenh iyi veceeosv'skdboeesavsaseadbdaadlaaeacedbedesaseeasinaeet ihe 19
4.2.4 Paper Release Mechanism ...0.......c.ccccesscceessseceesseeeeseneecesesevsaceeeeeaaeesseaueeeceeaaaeeeesscauaeteesssneaseessseeseessesatesenees 20
4.2.5. «Plater: LatenesSssvaicc ck fessscceve, casdves sectehas apeanes suchatacenusasdanesd cocteadaaenslenysactaveibes inden vevkaeevosneaetalataereicevusgereuieetenes 20
4.2.6 _Platen Variable Clutch Mechanism............ dydebokdisarhelinpedt ven igtuntyblacdvns Stuylasaateteaslscavbteredasenseteteens dani thee ntitarans 20
42:7 Carrier: SPACING .si..scaseesscescsseeaduedes seed encdensecbectsonduisveevedstonsscoueteyabeuceesteene eas satheadecalaveabuasssaatigdcdeseneliedecgsiua: 21
4.2°8. -Carrier HOME SOMSOP.. .ccisseelessshacescisieeeets ievssodeeedcevdsavstes seatevecebedouss eaesecweybaasaaadesusance ds sarsoncbedacdcendatancseotsceesunaegts 21
4.2.9 RIDDON Feed... ce eeessesssnsensasetsesseneeses saasdvatetvictace thutaneditage stele xastince ManiieaddatdsbravieaitaaansstisanetengsiMetaadts 21
42:10 GOPECtiON: Tape FOCUS si cacceeckdechicedaethcnuttvesvareutacceoosed evel dvedusredadsaeateaid euuustenegiendsSessvenvedsdetigersdietacevenderectsdeatevss 22
4.2.11 Daisywheel Motor and Character Printing ............ ee ccesessesenceeeseeeeeeessaeeeseeneneeeeesebaneneeseeaeeeeesenaeeeeeeseereenenanees 22
4.2.12 Easy Handling: FUNCHON :. csc. seeceses cert iseveseidecausdacs SeabegeessecsossobaptbusdgalsscoadansueeastesberastabadahssGbucegeivisaoedaienveates 23
A O13? [MMMAMZING s szess cv adeceddbacented oscie die bavabi ebecesuceas lad aieotael a Deasi esc edl ee ec dag aia eee eaiele dat dees tee eat hed see taeeate poe cent 23
4.2.14 Daisy Home Position AdjUStment.............:ce cece csseceeeeessecneteeneeeeaneseceereaeesesaaeepsneessscanersaeesenaessaeeeeseaseenaeesaee 24
4.2.15 Ribbon Life Adjustment............:cccesseeeenererteeees Sdessenste shcbchaptncanayedapebaunlgba lege svagabeages eu cceehsvsdedeces dévushexteuiey 24
Section 5 Electronic Circuit Description
5.1
5.2
5.2.1
5.2.2
5.2.3
Principle. Of Operation ss-scciscivseetscsevccecciacesi ge neanneceseeasectacavauea uate suena tcbaaceck sn edeareegaanesb ett ovseceydgneees densectdn ates 26.
CPU cn COMOl Circuit isc izi 8s ois conc ct asaceed as octane nas thiemcbers tage cana dana cat eoahead mbaneanl ya aipeeriatuagvanteaneds eeiaaaal 27
General DESCription::..s.cc..ic.aecesedesiegesse liv eatedsgectasevel ss tabhucbenelaeidout stasneshiousbi adbseasaberer ney poe liviGiaemidetielte alent 27
CP fescceaeodcsas ioe cck copng woth bar ne ee ees eda ena beaneeatei oe cies daehubeacbecGizaits caigectects ceeeuavs septal daly aaldedd te edecessoaseneaiis 28
Memory Map stvcccns cose. cccveecceecicepecs ieccagees esungctteden 25 sol bepdhcete accede carta netsh id ta ceed pevaneecnceebvaaleney wagddevepstebecey acest 29

5.2.4. “Gate-Array Pins FUNCHOM sis .ssscstacasctaeeedscteacee sesatags encivevshaiassnteetnsscnsacbanccstesevnchong sedi lend evens oblgsesedae cocgatedidegaesteade 30
5.3 Keyboard Matrix Circuit......00..00 ccc eee cere tsenenereeerennens Sncaicuubetvsscaddeviduets dai eugeercs teem nae wae 33
5.4 CRT Display. CirCult..iccssc.ccscc acd csuensescentepsecdbvesapsstuadibetiias secsstsceces sactestesccdisnidesiecucudanssearevde bea seseddaustpaadinenate 34
BIAS: - “SOCCIHICALIONS saszzcec2.cec ie hieverl sete ieeslacecdecceceetostesth sendeeeeaceceoucalaneds pantvdecdenie deeedatectagineatensadseestiveaad abdisaseieeted 11 34
B42? “ACUStMO Nba cuss cosesecceasescaurdctaccarancelaess ooosestcsabscocsisbessys'ets ganevsessaveneescesetelueplesdegasialiayetaes eitartivoseedendisuastavisieeds 36
FANS SCG rath CORA OM, ctv caccesacsesscv tes eseces foaloda acne Se estin we eae a cel eec ca Sree creda sal anete aoe Coenen catia 36
(b) Vertical Hold AdjUStMent......... eee ee eee teseecsecceesececsessseesssueseesssesensneseessseesaeseaeersesesessanescaeeeaeaeeeecaueenneedennaraes 36
(c) Horizontal Hold Adjustment.........0. cece cee cce esse eteeeeeseeeeneeeeneee as diegs NEC NDs og stagiven Seeders ives cnettvetatan ates 36
(d) Vertical Size AjUStMENE .0.. ee cece cece eee tesceesensnersecseseeeseesssseeeeesesaeeneeenecneesaseneee Suiaahpeulucues fees a eatiats 36
(e) Horizontal Size Adjustment... eee ceeeecsecseeeeteneeeeees jadassecebesetsddeGeesazccuaia less aiesdaveiied da -cadiivendeieteae 36
(f) Vertical Linearity AdjUStMeNt. 0... cece cs cccceereenescstesesseeessneeedeeeseseesesessssneecsessessesnensreecsueesrerarcesieneeias 37
(g) Centering Magnet Adjustment... ec cece cceesscssseeeserersenesDeaereseseeescaeesaseaseseesssesgensesateccenesserassusnenensenes 37
(h) Focus Control Adjustment... ee iacuaiallasatl dv auton ued aw ned Mage ftesuad pues getzastanas Gin couse tae mRda trast TONES 37
(i) Geometric Distortion Adjustment .0..... cece eee cceeeeeeseeesceeeeeeeseeeeeenssenesseesanensesseseneeeaeseaeeeeeeneeseneeennesneseeennes 37
~ (J) Low-Brightness AdjUStMent........ ce eee eeeseteessecsssensesensecesessesseeessasaseasensessecneessesneensesaeseaaneaesensansaersesnenes 38
(ky Sub-Brighthess Ags tee rit ascacvescoratpserspestetevtancsaig.oeduteats starelecasnainentar dang dueeeianteaiaanSiadias sana otetiaataes 38
BAB)’ BlOCK DIAQreina sv evccesvecs bvdecvsesscartaea Seca dacheattata rath sa eeteget cathe oadbe Dep esaedigy pod geseee Deatuadedeaa Nsdas iad na Meta 39
5.4.4 Wave FOI .......ccccccecesesesssseeesessnsecereesecsonsenseees saveblossidesligeniciegis hier eink hanlive ns ted AR hi chade beatae 40
5.5 Floppy Disk: Drive. Unlt........:c..ccdce ie iedi cent cess Hesdeotigendentivnces sion dle. couiesnetdeiseelees tte 41
BS ii (General: DESCHIPLON sacses ecco. veo cueceascas scat db scets tcccicedssSicvecieebgechansuenssiindvasecasestadealueasestaveeian tadsteaecae tanta diteendtes 41
5.5.2 “SPSCHICATION iaicc.fecevee teed eases cockes cose cseddungestedsbansaeauevtactusecazs cussed es igabacdsnth svasubedeescie ides esdsipstorsedantensbucgeesseegutnaenens A1
5.5.3. Periodic Maintenance and Drive Information ............c ccc ceseeceeserneeeeessseeeeeseeeesereneseaeccesaeneaseeeeeeneneneeneesenas 42
(a)s SHG ad: CIO AMIN G Sasi, Zeige. evcstns acces ceantecednins dvacteiuenovacnoacadevsuidettedategectvastens ten aninshnedenesseeevlens vesegiousacuaceaytedueteeae ey 42
(Dye SHCA ERG cei ecccdesiccceceess leant Siva baaviet ca Seuss oseqaabacunnsasbatugtsocuwentapsaiedarsdaveuisves cvtenisenataseadscshacasevaenseMesveanseebreeeeade 42
(6) HAM Pad ois. sesccescce dens srcnencs tesptoaies ween coves dscns neustbosedinesvodabana coucaddelandaeaapesduaseasosedsssetsddeesuecaudevsvabegeaazasaeaenizgees 42
(Q) DISK: acc snieeslacdedadcieebacbagscedeuedihchccstgh cps ouadevtalaed veouisye cncatabapevdeasgnonstentvisagatdasteasdetesatis oFalesder ieee: di ieagyte 43
55.4 BIOCK DiaQram aiscisccvseseesicegeeeca di sgvessinestedes revues stuns soteevecsevodeebees oneupsna satessentesedasndeacteseeessaensssUnecagesdensaeatastonsesat¥e 44
Section
6
Explanation
of
COMMe@Ctors
............:::
ccc
cc
cesses
nes
csesseeseesecsecisesensaseassueseennessaiensseeseeseesieaeennns
45
Section 7 Component Reference Guide
LOGIC BOA ic. becieresasnet i coups ds fae ok tg asaesa eta andy aaaano sg eaeteet dances Peace eeeta, Ae vave de ceses sieteedas aa daeeateissaceteete mean 50
Power Supply Board css.csc.c...:5ecesicsscenstacs de ecd fs ahs esbcanoie aokadabetesneny cece snnsmcb estes cuslvag bobasipndiasveeae ebbeanteresavebvates 54
CRT Display Circuit Board ooo... ccc cecenceseeeeeereeeeeeeeeaeessesesesesesensesneneseeeseseeeeensaeessaaeseanenneenresneenes 55
FDOD Unite. chris hee ia iieeeietndiiebeesteees ssa tgebbatebedd esa ag ua Sevtadvvatel earn duasavereiss madiacentatadh team cieiedeie sO
Section 8 Circuit Board
LOGIC BOA iis ccssesccecs sic csedest has sacete tics peca de onachacbile bate au cos'ta neki cceahbassiedansaats suabdatyecl@e asl alata dieiecees abe tae Geet tee 57
Key DOAN ois. cisscciese. eostsekoaceessivencaeesedsdcaentsteegeerresces So besh selina Cou sdases vis ced cqienpiabcobivasd ue sdeduedes uveninntelessertensawa aeieeer) 58
POW6r’ BOar i c52cceenccicchecctGensziecekeaxbebaa clap eauiay suche ehuneates vtavenestiaussateaseta seen bilit iesctlastia sae idea tuaadessubiedeanaesseanet 59
CRT Display Circuit Board oon... cece ree cere ceeeseserenenseeeseseeneesssessesensesenssnsasenaeestineesnestisenaetaeey 60
DBD ROA sci ssesessa sag Seiaceresocdci sty wed Geincaene yo ded a2. acas Donte iad cesevtaatlbetg GGunGlsiedcaserenaosleat Aneeebinr mt ateceatar testes 60
Section 9 Schematic Diagram
9.1 Logic Board Schematic «000.000... cece cscs aceescseseceeeeeeeeeseeanesessaeensseserseesseeesessseeesans Seehvendattenderedeeneessats 61
9.2 Keyboard Schematics. ...c:cccciccscsicsccteavesdensacsteetsivevsasactuhvatecsteuetevesateueetartensandbbas entasiedsacddeasedatsal cghenseceavtaree 62
9.3
Power
Supply
Schematic
...............
ib
ech
din
sine
a
EAL
Sethe:
hese
a
CR
tod
ona
tBunaote
awonetuzae
Tas
Mees
cacy
Sia
natimenayn’
63
9.4 CRT Display Circuit Board Schematic... cies cece ceeee reer eeeeceaeeeseeesanessessaeeenenecesesseeeeesgesseseeaserees 64
9.5 Floppy Disk Drive Board Schematic .............. ce ec ccccceececseesseeseseseresesesenaseeeenseenssesseeeneesensecseaecorerseeatias 65
Section
10:
Test
Program)
i436:
vesciee
ts
ee
eg
hn
ian
aaa
ee
66
Section
11
Trouble
Shooting
Flow
Chaft
......0......0...
cc
cece
ees
eeeeneeneeseesassieeeeaeseeeteasenmaneseneseas
70
Section
12
Parts
Catalog
and
Lubrications................0..000:ce
eieareer
ta
ete
eects
etna
92

1. General Information
1.1 Function Key Location
Keyboard
Selector
Line Spacing
Selector
LPitch Selector
Mode Selector
Power Switch
Brightness Control
Eject Button
7—Pliaten Knob
— Help Key
Menu Key
Spell Correct ON-OFF Key
_soyext Key (Spell Correct)
i Add Key (Code Function)
Replace Key (Spell Correct)
Delete Key (Code Function)
Cancel Key (Spell Correct)
List Key (Code Function)

s ee OF CODE KEY FUNCTIONS
CODE FE Doveeccsecescssssseeeseee S@t8/feleases auto carriage return mode.
CODE + B............ bene, sets/releases BOLD print.
CODE + C....ccceceeseceeeeeeses Centers information.
CODE + D........... Delete ieee aes sets page length. .
CODE + Bins. cieisntaiesin embeds the screen symbols.
CODE + Fincccecccssosciseccesrossoerene finds mistake (in edit-mode).
CODE + Gone. ceceeeteeetee sets/releases the insert/over typing mode.
CODE + Hiss. ciiieccicicancne half spacing.
CODE = Verasaccuedsestistivnteest sets/releases Paragraph Indent.
CODE He J iavcitin ceded: micro-pitch spacing.
CODE + Ko... ceeeeceeeeeeeeeeeeee stores line spacing to text.
CODE: Liki. haitisecnsccde changes margin format.
CODE + Ma... ceceeeteees checks remaining memory quantity.
CODE + NN... eeeeeeteteetereeees jumps to desired page.
CODE 0 viscentisiceeavascases: recalls Margin Format O.
CODE PF Piiesceccscclecresesssrsetecsees Stop Code.
CODE + Qu. ecccceestestetretree Moves, copies and deletes information block in a text.
CODE +R... ceecccessssscesteeees prints information with the last character on each line aligned at the right margin. —
CODE + 7'Siinccincceeincis searches words in a phrase or a text.
CODE: Ti iidiakuciicked. text append.
CODE + Ui. cccccccsssssesserseees sets/releases underlining.
CODE. Vivsieinuieeaccidase reference code for mail merge.
CODE + W.... ee eeeeeteneree sets page break.
CODE “6 Xveniecncciadtein replaces words in a phrase or a text.
CODE Se Vvtiscadcticctactacdet recalls Margin Format Y.
CODE Ziniciee tinea sd recalls Margin Format Z.
CODE + TAB............::cceeeeee aligns decimal points at the preset tab stops.
CODE -++ TAB CLR................ ..clears all tabs and margins... ~
CODE + LOCK... presets the unit for typing capital letters, lower case numbers, sanchustien marks and
symbols.
CODE + SPACE BAR............. sets Permanent Space.
CODE + —(hyphen).............. sets Permanent Hyphen.
CODE + 1-20 +RETURN......recalls phrases.
CODE + wee eeeeeeeeeeeees makes correction manually in the typewriter mode.
CODE + BACKSPACE .......... fast scroll backward word by word.
CODE + FWD............cee eee fast scroll forward word by word. =
CODE + RETURN.................. searches the return mark while executing the word search command or the word re-
place command.
CODE 6} iechenccevhaernccaniedss Mail Merge recorder header.
CODE ee iccsccitsiciradisecaak impression control.
CODE + RELOC.........0000.. express return.
CODE bbe cstisissiccteraedasaes next search/replace word (in edit mode)
CODE + OF ceeccccecseeesssesesereees Previous search/replace word (in edit mode)
CODE + NEXT PAGE............. scrolls to the previous page.
CODE + SC/NEXT............0. adds the word to the user’s dictionary.
CODE + REPLACE................ deietes the word from the user’s dictionary.
CODE + CANCEL................ lists the words in the user’s dictionary.
CODE+ 7... es tdeaieanees scrolls to the previous screen.
CODE HF chticeieieeessscsecssves scrolls to the next screen.
CODE
©
ceecsecsccsescssvaessevnie
advances
the
cursor
to
the
beginning
of
the
line.
CODE + > sedavesetceaaasenene ete adbances the cursor to the end of the line.
CODE
+¢*4
CS
ee
sets/resets
the
white
screen.
a

2. Removal and Replacement Procedures
Important Caution:
For reasons of safety and to avoid possible damage to electronic components, the AC cord must be removed before
disassembly.
Whenever servicing or replacing the CRT display tube, it is important that the anode high voltage be completely dis-
charged, as high voltage (12.7KV) may remain on the anode for an extended time after power off.
Refer to “Safety Precautions” on pages 1 and 14.
Remove the keyboard unit before proceeding with the following:
Paper Support Note: To comply with safety requirements please fol-
Silent Cover
low the caution label on the inside of the Ac-
cess Cover.
SERVICE CAUTION
PLEASE USE SCREW WITH
Platen
Platen Knob—-@
A
Printing Mechanism Unit 2
Mechanism Plate
1.
2.
1.
2.1 Rear Cover
Se | <=) WASHER IN THIS LOCATION
Remove both platen knobs.
Remove the top cover with reducing the clamp
part from the projection. And release the platen
by rotating the platen latches. (3.2.5)
. Remove 2 screws @ from the rear.
. Carefully raise the rear cover by holding the back
side and remove it.
. Replacement is done in the reverse order.
2.2 Mechanism Unit
Remove the rear cover (2.1) and 5 screws
from the access cover.
. Unplug the following from the main logic board;
the carrier flat cable CN4, the spacing motor con-
nector CN5 and the paper feed motor connector
CN2 and lid open switch connector (CN8).
. Remove 3 screws © from the mechanism plate.
And remove 2 screws © from the printing
mechanism to separate from mechanism plate.
. Release the hooks by sliding the unit a little to
front and lift off it.
For disassembly the printing mechanism refer to the
section 3.1.
5. Replacement is done in the reverse order:

Access Cover
12
As
2.3 Main Logic Board
Carefully turn the unit side down, remove the ac-
- cess cover by removing 5 screws ©).
. Unplug the following from the main logic board;
Keyboard connector CN3, CRT display connector
CN1, carrier connector CN4, spacing motor con-
nector CN5, paper feed motor connector CN2,
sensor connector CN8, and power supply connec-
tor CN7. ;
. Unplug the FDD signal cable from the FDD unit.
. Remove 4 screws ©) and lift off the main logic
board.
Replacement is done in the reverse order.
2.4 Power Supply
Remove the rear cover (2.1) and the mechanism —
unit (2.2).
. Carefully turn the unit side down and remove the
access cover by removing 5 screws ®. Unplug
the power supply connector CN7 from the main
logic board.
. Reposition the unit, and unplug the CRT power
supply connector Co-1A from the video board.
. Unsolder the AC SW lead from the Power Board.

. Remove one screw © which holds the ground
wire of the AC cord (Green Wire) to the switching
power supply frame.
. Remove 2 screws @ from the power supply
frame. -
. Remove 4 screws © from the power supply.
. Replacement is done in the reverse order.
2.5 Flopply Disk Drive
Caution:
When removing the floppy disk drive, make sure that
the floppy disk is not loaded.
1.
Remove the rear cover (2.1) and the mechanism
unit (2.2):
. Unplug the FDD signal (grey/flat) cable from the
FDD unit, and unsolder the power switch lead
(Red) from the power supply.
. Remove the power supply with the frame (2.4).
. Carefully turn the unit face down, and remove 4
screws © from the FDD frame and the Video
frame (2 screws each).
. Remove 2 screws @) from the bottom of the front
cover.
. Carefully remove. the front cover from the base.
. Remove 2 screws © from the front cover and lift
off the FDD unit with the frame.
. Remove 3 securing screws © with washer from.
the right side frame to release the FDD unit.
. Replacement is done in the reverse order.

2.6 Video Board
Caution:
When servicing or replacing the CRT display tube, it is
important that the high voltage on the anode be com-
pletely discharged, as -high voltage (13KV) may re-
main on the anode for an extended time after power
off.
1. Remove the rear cover (2.1) and the mechanism
unit (2.2).
2. Discharge the remaining static electricity by short-
ing between the anode and the picture tube frame
ground before disassembly. Failure to completely
discharge the anode may result in a shock hazard
and possible component damage.
3. Unplug the anode spring and the CRT neck board
from the CRT display tube.
And Unplug the FDD Cable (grey/flat) from the
FDD.
4. Unplug the CRT power supply connector Co-1A,
the CRT connector Co-2A, and the brightness
control connector Co-3A from the video board, the
connector from the DY terminal and the CRT
ground connector Co-2C from the CRT neck
board. Then unsolder the power switch lead from
the power board.
5. Carefully turn the unit face down, and remove 4
screws () from the FDD frame and the video
frame (2 screws each).
6. Remove 2 screws @ from the bottom of the front
cover.
7. Carefully remove the front cover from the base.
8. Remove 2 screws ™) from the front cover and lift
off the video board with frame.
Note:
When installing the video board with the frame, make
sure that the ground wire is secured with the screw.
9. Remove 1 screw ® which secures the Transistor
to the frame and 1 screw ® which secures the
GND lead.
10. Remove 2 screws © from the video board.
11. Replacement is done in the reverse order.

2.7 CRT Display Tube
2240) =
Caution: —
When servicing or replacing the CRT display tube, it is
‘important that the anode high voltage be completely
discharged, as high voltage (13KV) may remain on the’
anode for an extended time after power off.
1.
Remove the rear cover (2.1) and the mechanism
unit (2.2).
. Discharge the remaining static electricity by short-
ing between the anode and the picture tube frame
ground before disassembly.
Failure to completely discharge the anode may
result in a shock hazard and possible component
damage.
. Unplug the connector from the DY terminal on the
video board.
. Unplug the anode spring and the CRT neck board
from the CRT display tube and the CRT ground
connector Co-2C from the CRT neck board. The
unplug the power SW connector from the power
board.
. Carefully turn the unit face down, and remove 4
screws (© from the FDD frame and the video
frame (2 screws each).
. Remove 2 screws @) from the bottom of the front
cover.
. Carefully remove the front cover from the base.
. Remove 4 screws ® and washers, and remove
the CRT display tube from the front cover.
Note:
Do not lift the CRT display tube by the neck.
9.
Replacement is done in the reverse order.

Power Supply Frame 2.8 AC Cord
1. Remove the rear cover (2.1), the mechanism unit
(2.2) and the switching Power Supply (2.4).
2. Unsolder the AC cord from the power board.
3. Replacement is done in the reverse order.
See

Brightness Control Board
1.
11.
12.
13.
2.9 Front Cover
Caution:
-When servicing or replacing the CRT display tube, it is
important that the high voltage on the anode be com-
pletely discharged, as high voltage (13KV) may re-
main on the anode for an extended time after power
off.
Remove the rear cover (2.1) and the mechanism
unit (2.2).
. Discharge the remaining static electricity by short-
ing between the anode and the picture tube frame
ground before disassembly.
. Unplug the GND wire from the CRT neck board
(Co-2C), the anode spring and the CRT neck
board from the CRT display tube and the connec-
tor from the DY terminal on the video board.
. Unsolder the power switch lead from the power
supply, remove 2 screws @ from the power
switch and release the button by pulling the pow-
er switch.
. Unplug the brightness control connector Co-3A
Power Switch Button B 6
‘i a
Power Switch -
( -—=2z ! : «
from the video board, and remove the brightness
Key from the front cover. Remove 2 screws ®
from the brightness control board.
Carefully turn the unit face down, and remove 4
screws @) from the FDD frame and the video
frame (each 2 screws).
. Remove 2 screws @ from the bottom of the front
cover located at bottom side.
. Carefully remove the front cover from the base.
. Remove the FDD unit with the frame (2.5).
10. Remove the video board unit with the flame (2.6).
Remove 2 screws ©) from the disk storage.
Remove 4 screws ©) from the CRT display tube.
Note:
Do not lift the CRT display tube by the neck.
Replacement is done in the reverse order.

Selector |=
Y Switch
Board
Rubber Feet
$
;
' Function:
2.10 Keyboard Unit
' Keyboard Base
| Keyboard
Adjustable
Feet
Keyboard Cable
Function Key
3 43 =
1.
Unplug the curl keyboard Cable from the main
unit.
. Turn over the keyboard unit and remove the 3
rubber feet.
. Raise the keyboard adjustable feet.
. Remove 5 screws © from the keyboard base.
. Remove 4 selector keys from the top and then re-
move 2 screws ™) from the selector switch board.
. Remove 3 screws W from the function . switch
board.
. Unplug the flat cables CN101 and CN102 from
the function board and keyboard Cable connector.
. Remove 4 screws ® from the key board.
Replacement is done in the reverse order.

3 Logic Board Connection Diagram
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Josues
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prouajos
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pseog
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uedo
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ae

4. Printing Mechanism
4.1 Removal and Replacement Procedures
a 4.1.1 Carrier
Ce 1. Unplug the flat cable from the Carrier.
ad
2. Position the Carrier in front of the left side.
Pallet Gable Daniget 3. Remove the screw from the Carrier Cable
Hanger.
(Rear View)
Bail Lever Arm.
Carrier Rear Guide
Carrier Shaft
. Remove the screw from the right side frame.
. Remove the spring from the right Bail Lever Arm.
. Carefully remove the Bail Lever Arm away from
the end of the Carrier Shaft.
. Carefully slide the Carrier Shaft to the right.
. Remove the Carrier.
Replacement is done in the reverse order.
4.1.2 Ribbon Holder
1.
Ribbon Holder
Cam Follower
Ribbon Feed Motor
Drive Cam
Screws
Ribbon Feed Motor
2o4 =
Pull the Cam Follower out of the groove in the
Drive Cam.
. Slighty slide the Ribbon Holder to the right and
remove it upward.
Replacement is done in the reverse order.
; 4.1.3 Ribbon Feed Motor
Carrier Board {
Unsolder the Motor leads from the Ribbon Feed
Motor.
2. Remove the 2 screws from the Motor.
Replacement is done in the reverse order.

Screw Card Holder |
Front Support
——_f____--—____ 2
3
/ Seng,
Screw
rai
___
Slide
Shaft
5.
Ribbon > 6.
Sensor
7
Board
8
\
9
E-ring
Daisy Drive Screw Carrier Board
Unit
4.1.4 Daisy. Drive Unit
. Remove the Front Support and the Card Holder
by removing the screw.
. Remove the E-ring and the Drive Cam.
. Remove the screw from the. Ribbon Sensor
Board.
Remove the screw from the Carrier Board.
Remove the spring.
Remove the Clip from the Slide Shaft.
. Remove the Slide Shaft by pulling it to the front.
. Carefully lift off the Daisy Drive Unit, Carrier
Board and Ribbon Sensor Board together.
Replacement is done in the reverse order.
4.1.5 Hammer and Hammer Solenoid
Spring
Hammer Plastic Washer
aa,
1.
E-ring 2.
Remove the E-rings from the Hammer Pivot
Shaft.
Slide the Shaft to the left and remove the Ham-
mer with the plastic washer and spring.
3. Remove the 2 screws from the Hammer Solenoid.
. Remove the Solenoid.
5. Unsolder the Solenoid leads from the Carrier
Board.
Replacement is done in the reverse order.
4.1.6 Daisywheel Motor
Hammer
D
Rel
L
Bit
A
aisy
Release
Lever
4
Shatt
“——~
Screw
Screw
Hammer
Solenoid
Screw
Daisywheel
Gear
1
S46:
. Remove the E-ring @ from the Daisywheel Gear
Shaft.
2. Pull the Daisywheel Gear forward to remove.
3. Remove the screw from the Daisywheel Motor.
4. Remove the E-ring ® from the Daisywheel Shaft
bushing.
5. Remove the Bushing.
6. Remove the Motor.
7. Unsolder the Motor leads from the Carrier Board.
Replacement is done in the reverse order.
During replacement check the following:
@ Make sure that leads match with indicated color
as shown in the figure.
@ Make sure that the marks on the two Daisy-
wheel Drive Unit Gears are aligned.

Ar 8
Paper Feed Gear
Paper Feed Motor
Carrier Cable Hanger
Tension Arm
Tension Spring
ae AZ
4.1.7 Carrier Spacing Motor
1. Remove the 2 screws and disengage the motor
from the Cable Drum.
Replacement is done in the reverse order.
Note:
Connector CN5 must be unplugged before removing
the motor.
4.1.8 Paper Feed Motor
1.
Remove the E-ring from the Paper Feed Gear
Shaft.
Remove the Paper Feed Gear.
Remove the 2 screws and pull the Motor down-
ward to remove it.
Unsolder the Motor leads.
Replacement is done in the reverse order.
4.1.9 Carrier Cable
. Remove the Tension spring from the Tension
Arm.
. Remove the Tension Arm from the frame.
. Remove the Cable Gear Shaft screw and the
Cable Drum.
. Release the cable ends from the Carrier Cable
Hanger.
. Unwind the Carrier Cable.
Replacement is done in the reverse order.
Follow the next section 3.1.10 for winding the cable on
the Drum.

Short Side
Cable Stop
4.1.10 Carrier Cable Winding
Note: . :
Use of Carrier Cable Jig No. PUZXXR250M will make
cable installation much easier, as illustrated.
1. Insert the short end of the cable through the lower
hole and back through the upper hole, pulling until
the cable stops.
2. Wind the short cable end 3 full turns clockwise
around the drum, starting in the first groove and
hold while proceeding with Step “3”.
3. Wind the long cable end 4 full turns counterclock-
wise around the drum, starting in the first groove
from the outside, and hold.
4. Slide the Carrier Cable Jig onto the drum, as illus-
trated, with the cable ends through the Jig
opening.
Note:
@ The cable can be held in place with tape if the Jig is
not available.
@ Pull the Carrier Cable Jig downward to remove.
—~ 18 —

4.2 Mechanical Function and Adjustment
Paper Pan
Rear Feed Roller
Paper Release Plate
Front Feed
Roller
(Right Side View)
Reed Switch
Sector Gear , Gear
Intermediate
Gear
Magnet Shutter e T
B j
pal Pee,
Paper Feed Motor
49-55
4.2.1 Paper Feed Mechanism .
The paper feed mechanism, mounted on the Chassis,
consists of the Platen, a spring-loaded Paper Release
Plate and a floating Paper Pan which has 3 front and
3 rear Feed Rollers. As paper is inserted, it is guided
between the rear Feed Rollers and the Platen, where
it is gripped and fed as the Platen rotates. The paper
can be advanced manually mreugn use of either
Platen Knob.
4.2.2 Paper Feed Motor
Drive for the Platen is provided by a DC motor, which
rotates the Platen through a Sector Gear engaged
with the Plated Gear. One complete revolution of the
Intermediate Gear and Sector Gear provides 1/2 line
space movement to the Platen. As the Motor is ener-
gized, it begins to rotate counterclockwise (viewed
from the top) and its Gear causes the Intermediate
Gear to rotate clockwise, bringing the Sector Gear into
engagement with the Platen Gear and advancing the
Platen. The Home Detecting Lever is activated by
Cam rotation and the Magnet Shutter mounted on the
top of the Home Detecting Lever turns the Reed
Switch off. The Motor and Gear continue to turn
through momentum until a full revolution has been
completed. After rotation is completed, Platen position
is maintained by a spring-loaded Detent which is en-
gaged with the Platen Ratchet. The Paper Feed Motor
is actuated whenever the Carrier return key is de-
pressed.
4.2.3 Line Space Detent
After each line space operation, the Detent is fully
seated between 2 platen gear teeth by the tension of
the spring attached to the Detent shaft to obtain prop-
er line space operation.