MX-FD10 (serv.man7). Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 2

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ExplanationofSymbols

ThefollowingsymbolsareusedthroughoutthisServiceManual.

Symbols

Explanation

Symbols

Explanation

Check.

Removetheclaw.

Checkvisually.

Inserttheclaw.

Checkthenoise.

Usethebundledpart.

Disconnecttheconnector.

Pushthepart.

Connecttheconnector.

Plugthepowercable.

Removethecable/wire

fromthecableguideorwire

saddle.

Turnonthepower.

Setthecable/wiretothe

cableguideorwiresaddle.

Removethescrew.

Tightenthescrew.

ThefollowingrulesapplythroughoutthisServiceManual:

1. Eachchaptercontainssectionsexplainingthepurposeofspecificfunctionsandthe

relationshipbetweenelectricalandmechanicalsystemswithreferencetothetimingof
operation.

I n  t h e  d i a g r a m s , 

 r e p r e s e n t s  t h e  p a t h  o f  m e c h a n i c a l

d r i v e ;  w h e r e  a  s i g n a l  n a m e  a c c o m p a n i e s  t h e  s y m b o l ,  t h e
a r r o w  

  i n d i c a t e s  t h e  d i r e c t i o n  o f  t h e  e l e c t r i c  s i g n a l .

Theexpression"turnonthepower"meansflippingonthepowerswitch,closingthe
frontdoor,andclosingthedeliveryunitdoor,whichresultsinsupplyingthemachinewith
power.

2. Inthedigitalcircuits,'1'isusedtoindicatethatthevoltagelevelofagivensignalis

"High",while'0'isusedtoindicate"Low".(Thevoltagevalue,however,differsfrom
circuittocircuit.)Inaddition,theasterisk(*)asin"DRMD*"indicatesthattheDRMD
signalgoesonwhen'0'.

Inpracticallyallcases,theinternalmechanismsofamicroprocessorcannotbechecked
inthefield.Therefore,theoperationsofthemicroprocessorsusedinthemachines
arenotdiscussed:theyareexplainedintermsoffromsensorstotheinputoftheDC
controllerPCBandfromtheoutputoftheDCcontrollerPCBtotheloads.

ThedescriptionsinthisServiceManualaresubjecttochangewithoutnoticeforproduct
improvementorotherpurposes,andmajorchangeswillbecommunicatedintheformof
ServiceInformationbulletins.
AllservicepersonsareexpectedtohaveagoodunderstandingofthecontentsofthisService
ManualandallrelevantServiceInformationbulletinsandbeabletoidentifyandisolatefaults
inthemachine.

Thereisaportioncurrentlyexpressedwiththeillustrationofaconventionalmodelinthis
manual.