GrundigSC690 维修电路图、原理图.pdf

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1、Sono Clock 690 Service Document Exchange Set Es gelten die Vorschriften und Sicherheitshinweise gem dem Service Manual Sicherheit, Material- nummer 72010 800 0000, sowie zustzlich die eventuell abweichenden, landesspezifischen Vor- schriften! The regulations and safety instructions shall be valid as

2、 provided by the Safety Service Manual, part number 72010 800 0000, as well as the respective national deviations. S Dieses Service Dokument ist nur in Datenform verfgbar This Service Document is only available as data nderungen vorbehalten/Subject to alteration Made by GRUNDIG in Germany E-BS31 080

3、0 S Service Manual Sicherheit Safety Materialnr./Part No. 72010 800 0000 ? SonoClock 690 Alignment Information Model : GRUNDIG SC690 Ref. No. : SC690 Date : 16 FEB 2000 A) FM Radio section 1) FM IF INPUTSIGNALOUTPUTSET RADIOADJUSTADJUST FORREMARK TP810.7MHzTP3,4Quiet PointT101,102Max. o/p symmetrica

4、lVol. at min. position 2) RF VOLTAGE BANDSIGNALOUTPUTSET RADIOADJUSTADJUST FORREMARK FM- -TP2,5108MHzL1021.7V 2.3V high end 7.3V 7.7V 3) FM RF INPUTSIGNALOUTPUTSET RADIOADJUSTADJUST FORREMARK TP1,290MHzSpeaker90MHzL101Max. o/pVol. at max. position TP1,2106MHz 106MHzTC102 4) 75KHZ CRYSTAL OUTPUTADJUS

5、TADJUST FORREMARK TP6,7CHECK ONLY75KHz 10HZ 5) 1.8432MHZ CRYSTAL OUTPUTADJUSTADJUST FORREMARK TC201TC2011.8432MHz 10HZ Note : 1.Use the digital meter to measure each required voltage on the above items 2.Use weak signal in RF alignment 3.Radio & LCD board must be connected before alignment 4.Use the

6、 frequency counter to measure each required frequency on the about items. SonoClock 690 SonoClock 690 SonoClock 690 SonoClock 690 SonoClock 690 SonoClock 690 SonoClock 690 SonoClock 690 SonoClock 690 SonoClock 690 VOLTAGE TABLE OF MODEL : GRUNDIG SC690 (UNITS = VOLTS) DATE : 25 APR 00 COMPONENTS : I

7、CS IC 102, TA7358APIC 105, KA2201 AT POWER ON CONDITIONAT POWER ON CONDITION PIN NO.V-OUT (Volts) PIN NO. V-OUT (Volts) 10,4710,6 21,1720,5 32,9230 41,1640 5056,5 63,34612,2 72,22712,1 82,9687,2 92,92 IC 103, LA1260 IC 101, BU2614 AT POWER ON CONDITIONAT POWER ON CONDITION PIN NO.V-OUT (Volts)PIN NO

8、. V-OUT (Volts) 1012,3 22,521,7 31,530 4044,85 53,750 63,360 70,6870 81,5380 91,4590 101,46100 111,38110 122120 130134,85 140144,85 152,3151,14 161,76160 COMPONENTS : ICS IC 104, TC9260 AT POWER ON CONDITION PIN NO.V-OUT (Volts) 10 20 30 40 50 60 70 80 90 100 112,4 122,4 132,4 142,4 152,4 164,8 IC 1

9、06, 78L09 AT POWER ON CONDITION PIN NO.V-OUT (Volts) 116,7 20 39 Page 1 of 3 SonoClock 690 VOLTAGE TABLE OF MODEL : GRUNDIG SC690 (UNITS = VOLTS) DATE : 25 APR 00 COMPONENTS : TRANSISTORS MEASURED CONDITION : AT POWER ON Q1019014CQ10985500Q2019014C C5,25C12,2C0,37 B1,11B11,4B0,59 E0,58E12,2E0 Q10290

10、14CQ1109012HQ3019012G C5,25C4,91C1,3 B0,58B11,6B4,74 E0E12,2E4,88 Q1039018FQ1119014CQ3029012G C1,8C11,4C1,4 B0,75B0,56B4,72 E0E0E4,88 Q1049018FQ1129014CQ3039012G C0,07C0,56C1,4 B0B0,55B4,73 E0E0E4,88 Q1059015CQ1139012HQ3049012G C0C0C1,3 B0,7B11,4B4,73 E0,036E12,1E4,88 Q1069014CQ1149014CQ3059012G C0C

11、11,27C0 B0,036B0,57B1,3 E0E0E0 Q1089014CQ1159014C C6,1C0,57 B0,67B0,55 E0E0 Page 2 of 3 SonoClock 690 VOLTAGE TABLE OF MODEL : GRUNDIG SC690 (UNITS = VOLTS) DATE : 25 APR 00 COMPONENTS : TRANSISTORS MEASURED CONDITION : AT POWER OFF Q1089014C C12,54 B0,038 E0 Q10985500 C0,63 B12,5 E13,12 Q1109012H C4,91 B12,56 E13,1 Q1119014C C12,3 B0,57 E0 Q1129014C C0,57 B0,55 E0 Q2019014C C0,34 B0 E0 Page 3 of 3 SonoClock 690