GrundigSonoclock890 维修电路图、原理图.pdf

《GrundigSonoclock890 维修电路图、原理图.pdf》由会员分享，可在线阅读，更多相关《GrundigSonoclock890 维修电路图、原理图.pdf（19页珍藏版）》请在收音机爱好者资料库上搜索。

1、Sono Clock 890 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 070

3、0 S Service Manual Sicherheit Safety Materialnr./Part No. 72010 800 0000 ? SonoClock 890 I Alignment Information Model : GRUNDIG SC890 Ref. No. : SC890 Date : 29 FEB 2000 A) FM Radio section 1)FM IF INPUTSIGNALOUTPUTSET RADIOADJUSTADJUST FORREMARK TP810.7MHzTP3,4Quiet PointT101,102S curve symmetrica

4、lVol. at min. position 2)RF VOLTAGE BANDSIGNALOUTPUTSET RADIOADJUSTADJUST FORREMARK FM- -TP2,5108MHzL102High end 7.3V 7.7V 1.7V 2.3V 3)FM RF INPUTSIGNALOUTPUTSET RADIOADJUSTADJUST FORREMARK TP1,288MHzSpeaker88MHzL101Max. o/pVol. at max. position TP1,2106MHz 106MHzTC102 4)75KHZ CRYSTAL OUTPUTADJUSTAD

5、JUST FORREMARK TP6,7CHECK ONLY 75KHz 4HZ 5) 32.768KHZ CRYSTAL OUTPUTADJUSTADJUST FORREMARK IC201, PIN 56 TC202Clock accuracy 20 sec/month 6) 4.194304MHZ CRYSTAL OUTPUTADJUSTADJUST FORREMARK IC201, PIN 59 CHECK ONLY 4.194296MHz 4.194336MHz SonoClock 890 II 7) 4.332MHZ CRYSTAL OUTPUTADJUSTADJUST FORRE

6、MARK IC202, PIN 14 TC 2014.332MHz 500Hz 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 frequency counter to measure each required frequency on the above items. S

7、onoClock 890 SonoClock 890 SonoClock 890 SonoClock 890 SonoClock 890 SonoClock 890 SonoClock 890 SonoClock 890 SonoClock 890 SonoClock 890 SonoClock 890 SonoClock 890 VOLTAGE TABLE OF MODEL : GRUNDIG SC890 (UNITS = VOLTS) DATE : 25 APR 00 COMPONENTS : ICS IC 102, TA7358APIC 105, KA2201 AT POWER ON C

8、ONDITIONAT POWER ON CONDITION PIN NO.V-OUT (Volts) PIN NO. V-OUT (Volts) 10.5210.65 21.2320.57 33.4230 41.2240 5056.84 63.42612.9 72.68712.7 83.3987.58 93.42 IC 103, LA1260 IC 101, BU2614 AT POWER ON CONDITIONAT POWER ON CONDITION PIN NO.V-OUT (Volts)PIN NO. V-OUT (Volts) 11.5212.43 21.5222.1 31.523

9、0 4044.97 53.850 63.864.97 73.870 81.6480 91.4790 101.52100 110.75110 122.68122.37 130134.96 140144.96 152.41151.14 161.83160 Page 1 of 4 SonoClock 890 VOLTAGE TABLE OF MODEL : GRUNDIG SC890 (UNITS = VOLTS) DATE : 25 APR 00 COMPONENTS : ICS IC 104, TC9260 AT POWER ON CONDITION PIN NO.V-OUT (Volts) 1

10、0 20 30 40 50 60 70 80 90 100 112.41 122.41 132.41 142.41 152.41 164.95 IC 106, 78L09 AT POWER ON CONDITION PIN NO.V-OUT (Volts) 116.7 20 39 Page 2 of 4 SonoClock 890 VOLTAGE TABLE OF MODEL : GRUNDIG SC890 (UNITS = VOLTS) DATE : 25 APR 00 COMPONENTS : TRANSISTORS MEASURED CONDITION : AT POWER ON Q10

11、19014CQ10985500Q2019014C C5.25C12.9C12.9 B1.11B12.2B4.2 E0.58E12.9E3.53 Q1029014CQ1109012HQ2029014C C5.25C4.96C0.03 B0.58B11.7B0.59 E0E12.3E0 Q1039018FQ1119014C C2C11.6 B0.76B0.51 E0E0 Q1049018FQ1129014C C0C0.51 B0B0.56 E0E0 Q1059015CQ1139012H C0C4.94 B3.75B12.4 E0E13 Q1069014CQ1149014C C0C12.2 B0B0

12、.56 E0E0 Q1089014CQ1159014C C0.17C0.56 B0.7B0.56 E0E0 Page 3 of 4 SonoClock 890 VOLTAGE TABLE OF MODEL : GRUNDIG SC890 (UNITS = VOLTS) DATE : 25 APR 00 COMPONENTS : TRANSISTORS MEASURED CONDITION : AT POWER OFF Q1089014C C14.1 B0 E0 Q10985500 C0.62 B14.1 E14.8 Q1109012H C4.96 B13.5 E14.1 Q1119014C C13.4 B0.48 E0 Q1129014C C0.48 B0.56 E0 Page 4 of 4 SonoClock 890