Grundig-Sonoclock-420-Service-Manual电路原理图.pdf

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1、Sono Clock 420Service DocumentExchange SetEs gelten die Vorschriften und Sicherheitshinweisegem dem Service Manual “Sicherheit“, Material-nummer 72010 800 0000, sowie zustzlich dieeventuell abweichenden, landesspezifischen Vor-schriften!The regulations and safety instructions shall bevalid as provid

2、ed by the “Safety“ Service Manual,part number 72010 800 0000, as well as therespective national deviations.SDieses Service Dokument ist nur in Datenform verfgbarThis Service Document is only available as datanderungen vorbehalten/Subject to alterationMade by GRUNDIG in Germany E-BS31 0700http:/SServ

3、iceManualSicherheitSafetyMaterialnr./Part No.72010 800 0000IK501SonoClock 420Alignment InformationModel : GRUNDIG SC420Ref. No. : SC420Date : 21-Jan-00A) FM Radio section1) FM IFINPUT SIGNAL OUTPUT SET RADIO ADJUST ADJUST FOR REMARKTP3, 210.7MHz TP5,2 Quiet Point T1,2 Max. o/p symmetrical Vol. at mi

4、n. position2) RF VOLTAGEBAND SIGNAL OUTPUT SET RADIO ADJUST ADJUST FOR REMARKFM - - TP4,2 87.5MHz L2 1.9 2 .1V high end 7.5 8V3) FM RFINPUT SIGNAL OUTPUT SET RADIO ADJUST ADJUST FOR REMARKTP1,2 90MHz Speaker 90MHz L1 Max. o/p Vol. at max. positionTP1,2 106MHz “ “ 106MHz TC1 “ “ “ “4) 75KHZ CRYSTALOU

5、TPUT ADJUST ADJUST FOR REMARKTP6,7 TC2 75K 1HZNote :1. Use digital meter to measurement each required voltage on above items2. Use weak signal in RF alignment3. Radio & LCD board must be connected before alignment4. Use the frequence counter to measurement each required frequence on about items.SonoClock 420SonoClock 420SonoClock 420SonoClock 420SonoClock 420SonoClock 420SonoClock 420SonoClock 420