GrundigFREEZZ10RRCD4300 维修电路图、原理图.pdf

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1、FREEZZ 10 RRCD 4300 Service Document Exchange Set Es gelten die Vorschriften und Sicherheitshinweise gem dem Service Manual Sicherheit, Material- nummer 720108000000, sowie zustzlich die even- tuell abweichenden, landesspezifischen Vorschrif- ten! The regulations and safety instructions shall be val

2、id as provided by the Safety Service Manual, part number 720108000000, 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 H-S43 1

3、202 S Service Manual Sicherheit Safety Materialnr./Part No. 720108000000 ? FREEZZ 10 RRCD 4300? FREEZZ 10 RRCD 4300? FREEZZ 10 RRCD 4300? FREEZZ 10 RRCD 4300? FREEZZ 10 RRCD 4300? FREEZZ 10 RRCD 4300? FREEZZ 10 RRCD 4300? FREEZZ 10 RRCD 4300? FREEZZ 10 RRCD 4300? FREEZZ 10 RRCD 4300? FREEZZ 10 RRCD

4、4300? ADJUSTMENT PROCEDURES Tuner Test equipment: Signal Generator, oscilloscope, Digital Voltmeter Item Adjustment Preparation Adjustment Procedures 1 MW Coverage Couple signal generator via loop antenna. On modulation Adjust alternating with L102 at 515 kHz and with C1 at 1640 kHz. 2 AM IF Couple

5、signal generator via loop antenna. F=465 kHz; On modulation Adjust T102 for maximum 3 MW Sensitivity Couple signal generator via loop antenna. On modulation Adjust alternating with MW Coil at 558 kHz and with C2 at 1440 kHz for maximum and least distortion 4 FM Coverage Signal Generator to Aerial In

6、put; Ue=12 dBoV; Fmod=1 kHz; Deviation =40 kHz; Oscilloscope to Loud Speaker Adjust alternating with L104 at 87.35 MHz; and with FC1 at 108.25 MHz for maximum and distortion least 5 FM IF Signal Generator to Aerial Input. F=10.7 MHz. On modulation Adjust alternating with T101 and T103 for maximum an

7、d least distortion 6 FM Sensitivity Signal Generator to Aerial Input; Ue=12 dBoV; Fmod=1 kHz; Deviation=40 kHz; Oscilloscope to Loud Speaker Adjust alternating with L103 at 88 MHz and with FC2 at 106 MHz for maximum and least distortion Tape Deck Test equipment; Frequency Counter, Oscilloscope, Test

8、 Cassette 3150 Hz / 10 kHz Item Adjustment Preparation Adjustment Procedures 1 Tape speed Frequency Counter to Loud Speaker Play Test Cassette (3150 Hz Part). Adjust Motorpoti to 3150 Hz r10 Hz 2 Azimuth Oscilloscope to Loud Speaker. Play Test Cassette (10 kHz Part) With head screw A adjust for Maximal and equal level in Both channels. 3 Bias Frequency With L301 adjust for 77 kHz r2 kHz Motorpoti FREEZZ 10 RRCD 4300?