Gebruiksaanwijzing /service van het product 5017C van de fabrikant 3Com
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ONline 17-Sl ot System Concentrat or Insta llation and Operat ion G uid e Docu men t Nu mbe r 1 7-00 4 17-3 Printe d March 19 9 5 M o del Numbe rs: 50 17C-L S 50 1 7C 5 0 17C w ith lo ad sha ring 3Co m Corpo ration 1 18 T urnpike R oad Sout hbo r ou gh, M A 0 1 77 2-1 8 86 U.
i i ONli ne 17 - Slo t Sy st em C once ntra tor I nst al lat ion and Op erat io n Gu ide Feder al Comm unications Com mission Notice This equipment ha s b een t e sted and foun d to com p ly with the limits for a Cla ss A digit al device, pursua n t t o Part 1 5 of the FCC Rules.
ONli n e 17 -Slot System Con cent rator Ins talla t i on a n d O per a tio n Guide iii The Chipcom Multichannel Ar chitecture C o mmunications S y stem is registered un der U . S . Patent Nu mber 5,30 1 ,30 3. UNIX is a register ed trademark in the U.
i v O Nl ine 1 7-Sl ot Sys tem C oncent rat or I ns ta llati on an d O perat ion Gu id e.
Contents ONl ine 17 - Sl ot Sys tem C onc ent rato r Ins ta llati on an d Oper at io n Guide v How to Use T his Guide Au dien ce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii i Structu re of Th i s Gu i de .
v i ONli ne 17 -S lot Sy st em C once ntra tor Ins tal lat ion and O per atio n Gu ide L oc ati on Requ ire ment s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -4 Ve nti lat ion . . . . . . . . . . . . . . . . . . . . . .
ONl ine 17- Slot Sys tem C on centr ator Ins ta llati on and Oper atio n Guid e vi i Appen di x B — Slot Us a ge Chart Appen di x C — Techn ical Su pport On-lin e Tec hnical S uppo rt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
v ii i ONli ne 17 -Slo t Syst em Co nce ntr a t or I nst al lat io n and Ope rati on Gui de.
ON li ne Et herne t 10BA SE -FL Mo du le I nst al lat ion a nd O p erat ion Gu ide i x Figures Figu re 1-1 . Multip le 17 -Slot Conc entrator Envi ronmen t . . . . . . . . . . . . 1-2 Figu re 1-2 . ONli ne Sy stem Conce ntrator R ear V iew . . . . . .
x O Nl ine E ther net 1 0B ASE-F L Modul e In stall at ion an d Ope rati on Gui de.
ON li ne Et herne t 10BA SE -FL Mo du le I nst al lat ion a nd O p erat ion Gu ide x i Tab les Tabl e 2-1. Steps for Install ing th e ON l i ne Syst e m Con centra tor . . . . . . 2-6 Ta ble 2- 2. Ra ck M oun t S etting s . . . . . . . . . . . . . . .
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ONli ne 17 - Slo t Sy st em C once ntra tor Inst al lat ion and Op erat io n Gu ide x iii How to Use This Guide T his g u id e ex plai ns h ow to i nst all, ope rat e, and ma nag e t he f oll ow in g 3Com ONline ™ 17- S lot S ystem C o ncen trators .
ONl ine 17 - Slo t Sy ste m Conc ent rato r Ins tal la ti on and Oper atio n Guid e xiv Stru cture of Th is G uide This guide co ntain s the fol l owi ng chap ters: Chapte r 1 , I n tro du ctio n – Introd uces the princ ipal fea tures o f the ON line System Con centrato r a n d provid e s a fr ont and rear view of the un it.
ONli ne 17-S lot Sys tem Con ce nt rato r Instal l a tion and Op erat ion Gu ide x v Docu ment Conventi ons The fol lowing d ocumen t conve ntion s a re used in thi s ma nual: Con v entio n I ndica te s Ex ample Courie r te xt Use r inp ut In th e Age nt In formatio n F orm, enter MIS in the N ew Con ta ct fi eld.
x vi ONli ne 17 - Slo t Sy st em C once ntra tor I nst al lat ion and Op erat ion Gu ide Relat ed Doc u me nts This sec tion provi des i nforma tion on sup p ortin g do cume ntatio n, inc ludi n g: ❑ 3Co m Docu ment s ❑ Ref ere nc e Do cu ment s Note: A Note .
ON line 1 7-S lot Sy stem C once ntrat or I nst allat ion a nd Opera tion Gui de xvi i 3Com Documents The fol lowi ng doc um ents provi de ad ditiona l inform atio n on 3 Com produ cts: 17-S lot ON li.
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I ntro ducti on 1 - 1 1 Int roduc tion This c ha pter b riefly de scribes the capab ilities and opera tion of t he 3Com ONli ne™ S y stem Co ncentra tor . Cha pter 2 pro vides im porta nt inform a tion for in stallin g mo dules and verify ing th eir operat i on.
1 - 2 ONl in e 17- Slot Sys tem C on centr ator I nsta ll atio n and O perat ion Guid e F igure 1 -1 shows a mod el syst em that i nclud es ea ch of thes e c able types. In this di agra m, an ON lin e Eth erne t Repe ater Modul e is co nne cted to a 1 0BASE5 seg ment v ia an AUI cable and a tran s c eiver .
I ntro ducti on 1 - 3 Back Panel A pow er supply an d DC fan uni t are installed w hen you re c eive y our conce ntrator . There i s an On/O f f s witch on the powe r sup ply . The po wer s uppl y sho uld be powe red do wn wh en you inst all or remo ve it.
1 - 4 ONl in e 17- Slot Sys tem C on centr ator I nsta ll atio n and O perat ion Guid e Figur e 1-3. ON line Syste m Co ncentrat or Front Vie w A cabl e tray is p rovided wi th the co ncentrato r so that c ables y ou attach to the me dia mod u les can be r u n unde r the unit an d out the back − where they will not be in the wa y .
I ntro ducti on 1 - 5 Modula r Design The ON line Co n ce ntrator' s modul ar des ign l ets yo u add d ifferent m e dia mo dule s (su ch a s f ib er , twi sted pai r , and co axi al) in an y co mbi na t io n to conn ect dif f eren t types of med i a se gm ents .
1 - 6 ONl in e 17- Slot Sys tem C on centr ator I nsta ll atio n and O perat ion Guid e TriChannel A rchitect ure The ONline Syste m Co ncentra tor's T riChann el arch itectu re lets you run Etherne t, Toke n Ring , and FDD I netw orks, al l in th e sam e conce ntrato r .
I ntro ducti on 1 - 7 Figur e 1-5 . ON line Syste m Co ncentrat or Using M ultiple N etwork s.
1 - 8 ONl in e 17- Slot Sys tem C on centr ator I nsta ll atio n and O perat ion Guid e Fault-T olerance Ca pabilities The ONline Syste m Co ncentra tor prov ides fault to lerance through redund ant f.
I ntro ducti on 1 - 9 Bac kup C o ntroller Module The c o ntrol ler i s vital to the syste m bec ause it perfo rms im port ant fu nctio ns in clu ding : ❑ syn chr onizi n g al l mod ules ❑ mo nitoring conce ntrator c onditio ns (tem pera ture, po wer su pp l y statu s, etc.
1 - 10 ONli ne 17-S lot Syst em Co nce ntrat or I nst al latio n and Op erat ion Gu ide Figur e 1-6 . Redund ant Cable Link Co nfigura ti on Backup Concentrator A seco n d con centrator o r 3Com Fi ber Ethe rnet Star Coup ler ma y be us ed to bac kup the prim ary co n cen trator in a star-wi red net work.
Int rod u ctio n 1 - 11 Figur e 1-7 . Ba ckup Concentr ator Co nfigura ti on Hot S w a pping of Me dia Modules Medi a mod u les c an be ad ded, re m oved , and reconfi gured withou t pow eri ng down the ONl i ne Sy stem Co ncentrato r or affecting the re st of the netw ork.
1 - 12 ONli ne 17-S lot Syst em Co nce ntrat or I nst al latio n and Op erat ion Gu ide Synchro nous Backplane The ONline Syste m Co ncentra tor bac kplane is d e signed wi th all pa ssive compo nent s to ach i eve the m axim um rel ia b ili t y .
Ins t alla t i o n and T roub les hoot in g 2 - 1 2 Ins tallatio n an d Tr ou ble sh oo ting This cha pter d e scri bes ho w to insta ll the ONlin e Sys tem Con centra tor , how to inst all ONl i n e mo du le s, a nd how to i nst all the op tio na l back up power supp ly in to yo ur ONline u nit.
2 - 2 ONl in e 17- Slot Sys tem C on centr ator I nsta ll atio n and O perat ion Guid e – 1 5 bl ank fa ceplate s ❑ Chass is ra ck mount kit ❑ Ca b le tray with ra ck mo un t kit ❑ ONl ine Fa .
Ins t alla t i o n and T roub les hoot in g 2 - 3 If an y o f t h es e it e ms ar e d ama ged or mi ss in g, c on ta ct your l oc al s up pl ier or a 3Co m serv ice rep res entati ve.
2 - 4 ONl in e 17- Slot Sys tem C on centr ator I nsta ll atio n and O perat ion Guid e Site Sele ction Co nside rat ions The co ncen trator ca n be pl a ced alm o st an ywhe re withi n your co mpa n y , includ ing of f ic e s a nd co m puter roo ms. I n gen eral, w e reco m mend insta l l ation in a wirin g clos et.
Ins t alla t i o n and T roub les hoot in g 2 - 5 Caution : The concen trator sh ould h a ve tw o fans runn i n g a t all time s to co o l the unit p roperl y . Y ou sh ould there fore have: (A) a p ower supp ly (with b uilt-in f a n) and a f a n unit in st alled or (B) two p o we r supplie s installed.
2 - 6 ONl in e 17- Slot Sys tem C on centr ator I nsta ll atio n and O perat ion Guid e T able To p Installa tion Requirements For table top or shelf moun t installa ti on of the ONline S ystem Con c entra tor you must m a ke s ure the table or sh elf can support 1 0 0 pound s (4 5 kg) for a fully load ed 17 -slot c onc entrato r .
Ins t alla t i o n and T roub les hoot in g 2 - 7 Installing the Cable Tray The cable tra y that c om es sta ndard with the conc entrato r helps to ma nage the cables that run from the front of the un it s o they are fed un d er the unit and out thro ugh the back .
2 - 8 ONl in e 17- Slot Sys tem C on centr ator I nsta ll atio n and O perat ion Guid e Cable Tray R ack Mounting To in stall th e conce ntrator i n a rack, firs t instal l the ca b le tray and then insta l l t he con c entrator abov e the tra y .
Ins t alla t i o n and T roub les hoot in g 2 - 9 Figu r e 2-2 . Rac k Mo unt Po sitio ns Foll ow the step s below to mount the cabl e tray in yo ur rack: 1 .
2 - 10 ONli ne 17-S lot Syst em Co nce ntrat or I nst al latio n and Op erat ion Gu ide Note: The function of t he clip is to hold the n ut in place be hind the rail. Be s ure to insta l l the clip on to the rai l so that the nut i s cente red b ehin d the hole throu gh which you plan to in ser t the scr e w .
I n sta llat io n an d Trou bl esh oot ing 2 - 11 Installing the ONline S ystem Conc entrator The ONli ne Sy stem Concen trator can be pla ced o n to p of a tabl e or a she lf, or mo unted i n a rack. Mak e sure th e cable tra y has b een insta lled f i rst on the tabl e or in the ra ck (or th at 1 3/4" (4.
2 - 12 ONli ne 17-S lot Syst em Co nce ntrat or I nst al latio n and Op erat ion Gu ide Caution : You must use t he supp lied 8-3 2 x 1/4" s crews to attac h the rack m ount fla ng es . A longer s crew ma y extend too far in to the ONline chassis an d disrupt the i ns tal la tion of mo dule s.
I n sta llat io n an d Trou bl esh oot ing 2 - 13 Figur e 2-5 . Ch assis M ounted in Rac k T able To p Mount ing the ONline Concentrato r You can se t the ONl i n e Con centra tor dire ctly on a table top or she lf that can s upp ort a t least 1 0 0 poun ds (4 5 kg ).
2 - 14 ONli ne 17-S lot Syst em Co nce ntrat or I nst al latio n and Op erat ion Gu ide Installing the Backup Powe r Supp ly (Option al) Insta ll the ba ckup pow er supply in the ON line Sy stem Concentra tor (i f ordere d). This power sup ply pro vides p o wer redu ndan c y if the prim ary pow er supply sh ould fa i l .
I n sta llat io n an d Trou bl esh oot ing 2 - 15 Figure 2-7 . Unplug ging th e Fan Unit Befo re you ins tal l the n ew pow er supply , chec k the la bel on the in side of th e power sup ply bay that explai n s where each of the seven p owe r leads from the po wer su pply are co nnected in the co ncentrat or chassis.
2 - 16 ONli ne 17-S lot Syst em Co nce ntrat or I nst al latio n and Op erat ion Gu ide Figure 2-8. P owe r Su pply Connecto rs 3. Hold the ba c kup po wer suppl y in one hand while us i ng your other hand to plug i n the s even (7) le ads from the pow er supp ly as show n in Fi gure 2 -9.
I n sta llat io n an d Trou bl esh oot ing 2 - 17 4. M a ke su r e the cable is push ed up to t he right side a nd the n slide the pow er sup p ly into the back o f the co ncentra tor as sh own in Figure 2-1 0 . Then faste n with the four (4) s crews you re moved earl ier from the fan unit.
2 - 18 ONli ne 17-S lot Syst em Co nce ntrat or I nst al latio n and Op erat ion Gu ide 2. Us e a fl at-bla de sc rewdri ver to m ov e the v oltag e sele ctor s witch so th e settin g that i s appro pria te for yo ur coun try's l ine vo ltage is sh ow ing: 1 00/ 1 2 0 V ol t s or 22 0/2 4 0 Volt s, a s sh own i n Fi gure 2 -1 1 .
I n sta llat io n an d Trou bl esh oot ing 2 - 19 War ning: D O NO T u s e a 3-to-2 p rong e d ad apter a t the outle t sinc e this m ay res ult in el e ctri cal sh o c k and do es no t pro vide adeq uate g round ing. Installing ON line Modules War ning: On ly s er vic e per son ne l sh ould ins tal l ONl ine modul es.
2 - 20 ONli ne 17-S lot Syst em Co nce ntrat or I nst al latio n and Op erat ion Gu ide Figur e 2-1 2. N etw ork Cable Co nnections Power Up and Verification This sectio n te lls ho w to pow er up the co nce ntrator a nd v erify t hat i t is work ing c orrectly .
I n sta llat io n an d Trou bl esh oot ing 2 - 21 Fan Operation Verification To ve rify that t h e fan uni t and the power s upply fan are func tio n ing correctl y yo u need to v i sual ly in spect the fa n un it(s) o n the rear of the conce ntrator to ma ke sure they a re turning a nd that no thing is block ing their pa th.
2 - 22 ONli ne 17-S lot Syst em Co nce ntrat or I nst al latio n and Op erat ion Gu ide If any o f these LED s are no t li t as sho wn in th i s chart, refer to T ab le 2 -4 to troubl e sho ot the pro blem.
I n sta llat io n an d Trou bl esh oot ing 2 - 23 Prima ry Po wer (cont. ) Stead y bl inki ng (cont. ) The pri mary pow er supply is no t pro perly i ns t al led. Rei n s ta ll the pri mary pow er supply a nd turn i t on. T wo bl in ks , then a pa use (i n un is on with Ba ckup Power LED) The po we r load -shari ng hardw are i s in an e rror state.
2 - 24 ONli ne 17-S lot Syst em Co nce ntrat or I nst al latio n and Op erat ion Gu ide Back up Po wer (cont. ) Stead y bl inki ng (cont. ) The ba ckup pow er supply has fai led. See Prim ary Pow er LED sug g estion s for same State and Po s sib le Prob lem (a bove).
I n sta llat io n an d Trou bl esh oot ing 2 - 25 Tech ni cal As sist anc e Yo u ca n re ceiv e ass ist ance for in stal lin g and tr oubl esh ooti ng the 17- Sl ot conce ntrator by c alling your d ea l er o r 3Com Cu sto m er Suppo rt.
2 - 26 ONli ne 17-S lot Syst em Co nce ntrat or I nst al latio n and Op erat ion Gu ide ❑ th e confi guratio n of yo ur concen trator ❑ th e screen info rmation reporti ng the SH OW DEVI CE co mma.
Mai nt ena nce 3 - 1 3 Mai nt enance This cha pter desc ribes routi ne ma inten ance d esi g ned to k eep y our ONli ne System Concentra tor wo rking at i ts best.
3 - 2 ONl in e 17- Slot Sys tem C on centr ator I nsta ll atio n and O perat ion Guid e Routine Maint enance You shoul d insp e ct you r equ i pmen t to mak e s ure that all of the f ollowi n g are t .
Mai nt ena nce 3 - 3 Figur e 3-1 . Remo ving the Po wer Su ppl y 3. Careful l y pu ll the po w er supp ly o ut from the c oncentra to r and discon nect the seve n (7) power l eads from t he conne cto rs i nside the ba se of t he ONl in e un it as sh own i n Fig ur e 3-2 .
3 - 4 ONl in e 17- Slot Sys tem C on centr ator I nsta ll atio n and O perat ion Guid e Figur e 3-2. Unplugging the Po wer Su pply Note: Before you install the n ew pow er supp l y , ch e c k the l a .
Mai nt ena nce 3 - 5 Figur e 3-3. Powe r Supply Plug s in ONline System Conc entrator 5. M a ke s ure the c able is pus hed up to the ri ght si de an d slid e the pow er supply into the ba ck of the conce ntrator and fa sten it w ith the four (4) sc rews yo u remov e d f ro m the d efective uni t as sho wn in Fig ure 3-4.
3 - 6 ONl in e 17- Slot Sys tem C on centr ator I nsta ll atio n and O perat ion Guid e Figur e 3-4 . Bac kup Pow er Su ppl y Ins talled 6. Set the volta g e s e l e c t i on s w i tch on the b ack of.
Mai nt ena nce 3 - 7 Replac ing t h e Fan Unit A fan ins ta lle d in either the left or rig ht bays i s remov ed or insta l l ed in exactl y th e sa me m anne r as th e po wer s upply . Fo l l ow th e step s below to replace a fan unit: Caution : The concen trator m ust hav e two fans ru nning at all times to co o l the un it.
3 - 8 ONl in e 17- Slot Sys tem C on centr ator I nsta ll atio n and O perat ion Guid e 2. Careful l y pu l l th e fan u nit out from th e conc entrat or and disconn e ct th e wiring ha rness f rom the plug i n s ide the base of the ONli ne unit as sho wn in Fi g ure 3-6.
Mai nt ena nce 3 - 9 Figure 3-7 . Fan Unit Installed ONline Mod ule Mainte nance Refer to the ONline ins tallation guides that c o me w ith the modules for insta llati on and o perati on info rmati on.
3 - 10 ONli ne 17-S lot Syst em Co nce ntrat or I nst al latio n and Op erat ion Gu ide Vors icht : D i eses ge rät hat eine od er zwei netzv erbindu ngen.
Sp ecif ica ti ons A - 1 A Sp ecifi cati on s Ge ne ral Netw ork Pro to cols Sup porte d: Ethern et/IEEE 80 2.3 over vari ous m edia IEEE 8 0 2 .5 To ken Ring over v arious med i a A N SI FDDI Environ.
A - 2 ONl ine 17- Slot Sy st em Conc ent rato r I nst al la ti on and Op erat ion Gu ide Mechanic al Dime ns io ns: 17 .5" W x 18 .3"D x 8 .75"H (4 4.5 cm x 46 .5 c m x 22.2 c m) Weigh t: unloa ded, wi th one po wer s upply: 38 lb. (17 k g .
Sp ecif ica ti ons A - 3 Ac cesso ries Cable M ana ge ment Tray (5000CT): 17 .5"W x 18.3" D x 1 .75 "H (44. 5 cm x 46 .5 cm x 4.5 cm) 8 lb. (3 .6 kg .) Rack-M ount Kit (50 17RM): 2.5 lb. (1 .2 kg.) Backup Powe r Sup ply (50 17PS -3 2 5): 8 lb.
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Sl ot Usage Cha rt B - 1 B Slo t Us age Chart The ONline Syste m Co ncentra tor has seven teen s l ots, sixtee n of w hich are a vaila ble slot s for in st al lin g media modu les ( one s lot is oc cupi ed b y th e ONli ne Con trol ler M o dul e). The sl ot on the far left i s s lot numb er 1 and runs to s lot 17 on the far righ t.
B - 2 ONl ine 17- Sl ot Sy s tem Conc ent rato r Ins ta lla ti on and Oper at ion Gu ide 3 4 5 6 7 8 9 10 11 12 T a ble B -1 . Conc entrato r Sl ot U s ag e Chart (Co ntinue d ) Slot Modu le Type N et.
Sl ot Usage Cha rt B - 3 13 14 15 16 17 T a ble B -1 . Conc entrato r Sl ot U s ag e Chart (Co ntinue d ) Slot Modu le Type N etwo rk (# or Isolated) Rema rks.
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Technic al Support C - 1 C Tec hn ic al Sup port 3Com prov i des e asy a ccess to techn ical sup port in forma tion thro ugh a va rie t y of ser vice s.
C - 2 ONl i ne 17_ Slot Sy s tem Conc ent ra tor I nstal la tion and O per atio n Guid e Email Technical Support You ca n conta ct the Integ rated Syste ms Divi s ion (formerly Chipcom ) o n the Intern et for techn i cal support us ing th e e-ma il ad dress te chsu pp@ chip com.
Technic al Support C - 3 When you contact your netwo rk supplier for ass i stance, ha v e the fo l lowing inform ation rea d y: ❑ Di agnos tic err or me ssag es ❑ A lis t of system hardw are an d .
C - 4 ONl i ne 17_ Slot Sy s tem Conc ent ra tor I nstal la tion and O per atio n Guid e For acc ess to c usto m er serv ice fo r all 3Co m pro ducts , call (800 ) 8 7 6-3 2 66. You can also co ntac t th e Integ rated S yste ms Div i sio n (ISD) o n the Inte rnet by us ing the e-m ail a ddress techsup p@c hipcom .
Technic al Support C - 5 3. Enter yo ur full I nterne t e-mai l add ress a s the p asswo rd (for exam ple, jdoe @com pany. com ). 4. Change to the mib or sc hema direc tory using the cd /p ub/m ibs or cd /p ub/ mi bs /s ch em as com man d. 5. To v i ew the 3Co m MIB, OID , or schem a entri es , enter the di r co mmand.
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Ind ex 1 Index Numer ics 3Com Bull e tin B oard Service (3C omBB S ) , C-3 A Audie nce of Ma nual , xiii B Back Pan el , 1-3 Ba c k up Powe r Su pply Insta lling , 2-1 4 bulle tin bo ard ser vice , C-.
2 Ind ex Power Sup ply Lo ad S har in g , 1-8 Repl acing , 3 - 2 Q Quick Inst a llat ion , 2 - 6 R Ra ck M ount ing , 2 - 1 1 Prepa ratio n , 2-5 Re gul ato ry Co mp lian ce , A-2 returning pro duct s.
Een belangrijk punt na aankoop van elk apparaat 3Com 5017C (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen 3Com 5017C heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens 3Com 5017C vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding 3Com 5017C leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over 3Com 5017C krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van 3Com 5017C bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de 3Com 5017C kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met 3Com 5017C . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.
