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1、Service Document Exchange Set Es gelten die Vorschriften und Sicherheitshinweise gem dem Service Manual “Sicherheit“, Material- nummer 720108000001, sowie zustzlich die even- tuell abweichenden, landesspezifischen Vorschrif- ten! The regulations and safety instructions shall be valid as provided by

2、the “Safety“ Service Manual, part number 720108000001, as well as the respective national deviations. S S Service Manual Sicherheit Safety Materialnr./Part No. 720108000001 YACHT BOY 50 WR5405 Dieses Service Dokument ist nur in Datenform verfgbar This Service Document is only available as data nderu

3、ngen vorbehalten/Subject to alteration Made by GRUNDIG in Germany HS-41 0404 http:/ RadioFans.CNYACHT BOY 50 (2) ALIGNMENT FOR FM SENSITIVITY a. Required Instruments FM/AM RF S ignal Generator SSVM b. Alignment Procedure Mode Adjustment Procedure (1) Set the power switch to the ON position. (2) Conn

4、ect a SSVM to the speaker. (TP2, TP3) (3) Connect the FM signal generator to the input terminal of the rod antenna (TP1, TP4) (4) Set the signal of the signal generator to the standard FM band, with frequency deviation to 22.5kHz modulation. (5) With the tuning gang fully closed, set the signal gene

5、rator to 90 MHz and adjust L15 (stretch or squeeze) for a maximum reading on the SSVM. (6) With the tuning gang fully open, set the signal generator to 106 MHz and adjust VC1 for a maximum reading on the SSVM. FM L15 VC1 (7) Repeat steps 5 and 6 until the best sensitivity is obtained at both frequen

6、cies. c. Instrum ent Connection L15 VC1Signal Generator Test Point TP4 Test Point TP1Test Point TP2 Test Point TP3 SSVMALIGNMENT INSTRUCTIONS (1) ALIGNMENT FOR FM FREQUENCY RANGE a. Required Instruments FM RF si gnal generator S SVM b. Alignment Procedure Mode Adjustment Procedure (1) Set the power

7、switch to the ON position. (2) Connect a SSVM to the TP2 and TP3. (3) Connect the FM signal generator to the input terminal of the rod antenna (TP1, TP4) (4) Set the signal of the signal generator to the standard FM band, with frequency deviation to 22.5 kHz modulation. (5) With the tuning gang full

8、y closed, set the signal generator to 87.35 MHz 0.15 MHz and adjust L16 (stretch or squeeze) for a maximum reading on the SSVM. (6) With the tuning gang fully open, set the signal generator to 108.25 MHz 0.25 MHz and adjust VC2E for a maximum reading on the SSVM. FM L16 VC2 (7) Repeat Steps 5 and 6

9、until the best sensitivity is obtained at both frequencies. c. Instrum ent Connection VC2 L16Signal Generator Test Point TP4 Test Point TP1Test Point TP2 Test Point TP3 SSVMRadioFans.CNYACHT BOY 50 (3) ALIGNMENT FOR AM IF a. Required Instruments AM RF Signal Generator SSVM b. Alignment Procedure Mod

10、e Adjustment Procedure (1) Set the power switch to the ON position. (2) Connect a SSVM to the TP2, TP3. (3) Connect the AM signal generator to the loop antenna. AM CF 1 (4) Set the signal generator to 460 kHz, with 30% modulation. Set the tuning gang fully closed, and adjust CF1 for a maximum readin

11、g on the SSVM. c. Instrum ent Connection CF1Test Point TP2 Test Point TP3 SSVM(4) ALIGNMENT FOR AM FREQUENCY RANGE a. Required Instruments AM RF S ignal Generator SSVM b. Alignment Procedure Mode Adjustment Procedure (1) Set the power switch to the ON position. (2) Connect a SSVM to the TP2, TP3. (3

12、) Connect a AM RF signal generator to the loop antenna. (4) Set the signal generator to 516.5 kHz with 30% modulation. Set the tuning gang fully closed, and adjust T2 for maximum reading on the SSVM. (5) Set the signal generator to 1630 kHz. Set the tuning gang fully open and adjust VC4 for a maximu

13、m reading on the SSVM. MW T2 VC4 (6) Repeat Steps 4 and 5 until the best sensitivity is obtained at both frequencies. c. Instrum ent Connection T2 VC4Test Point TP2 Test Point TP3 SSVMRadioFans.CNYACHT BOY 50 (5) ALIGNMENT FOR AM SENSITIVITY a. Required Instruments AM RF Signal Generator SSVM b. Ali

14、gnment Procedure Mode Adjustment Procedure (1) Set the power switch to ON position. (2) Connect a SSVM to the TP2, TP3. (3) Connect the AM RF signal generator to the loop antenna. (4) Set the signal generator to 558 kHz, with 30% modulation. Set the tuning gang fully closed and adjust L17 for a maxi

15、mum reading on the SSVM. (5) Set the signal generator to 1440 kHz. Set the tuning gang fully open and adjust VC3 for a maximum reading on the SSVM. MW L17 VC3 (6) Repeat steps 4 and 5 until the best sensitivity is obtained at both frequencies. c. Instrum ent Connection L17 VC3Test Point TP2 Test Poi

16、nt TP3 SSVM(6) OSCILLATOR ALIGNMENT FOR REMAINDER OF SW BANDS a. Required Instruments AM RF Signal Generator SSVM b. Alignment Procedure Mode Pr ocedure (1) Set the power switch to ON position. (2) Connect a SSVM to the TP2, TP3. (3) Connect a signal generator with a 10pF dummy antenna. (TP1, TP4) (

17、4) Set the signal generators frequency as noted below (use 1kHz, 30% modulation). 49m 16m (5) With the tuning gang fully closed, adjust the appropriate coils noted below for maximum reading on the SSVM. Mode Generator Frequency Adjustment 49m 5.8 MHz T4 41m 7.0 MHz T3 31m 9.3 MHz T6 25m 11.43 MHz T5

18、 21m 13.43 MHz T7 19m 15 MHz T9 16m 17.32 MHz T1 c. Instrument Connection T7 T5 T1 T6 T4 T3 T910 pF Test Point TP4 Test Point TP1 Signal GeneratorTest Point TP2 Test Point TP3 SSVMRadioFans.CNYACHT BOY 50 T4 L1 T1 Q1 TIME LIGHT AM SW2 SW4 SW6 SW7 AM IC2 OSC Q4 Buffer Switch Q6, Q7 HP WORLD KEY SW103

19、 LCD Q106 Q107 OSC T2 SW1 ANT L2 OSC T3 SW3 ANT L6 OSC T7 T5 SW5 ANT L5,L9 OSC OSC T9 SW7 ANT L11,L7 CF4 AMP IF FM L16 IC3 HP JACK CF2 IF FM Det FM FM/AM Switch Batt JACK VR1 TC2 FM OSC power LED101 Q102 SW1 SW3 SW5 SW1 SW1 L14,3 POWER Q2, Q3 IC1 TA2111FN SW2 ANT Switch AMP FM OSC Q101 AMP IC101 TC9

20、318FA X101 OSC OSC OSC T6 Q9 Buffer R5, R7 BAND Det SW2 SW4 SW6 ANT ANT ANT L4,10 L8,12 SW1 D1 SWITCH Q5, Q6 SWITCH AMP BUZZ TDA2822 CF3 AM CF1 T8 FM ST/MO Switch L15 LIGHT Q103 AM OSC SW1 AM OSC TC1 DC JACK RadioFans.CNYACHT BOY 50 RadioFans.CNYACHT BOY 50 RadioFans.CNYACHT BOY 50 RadioFans.CNYACHT

21、 BOY 50 ( 1 ) Weak sensitivity on FM mode Check whether the sensitivity is recovered if antenna is directly Yes Check the antenna terminal and connected to the point between antenna circuit. C17 and C35. No Yes Check IF waveform. Check CF3, CF2, CF5. No Check C31 and L15. ( 2 ) Weak sensitivity in A

22、M band Yes Is the reception in MW/SW band O.K.? Check the antenna circuit and antenna terminal. No No Y e s Check if band selectors are normal. Check whether If is normal. No Y es Check SW1. Check whether the circuit of the buffer is normal. o Y es No Check C24 and Q1. Check whether the antenna circ

23、uit is normal. (L3, C21) Y es Check T8 and IC1. TROUBLESHOOTING FLOW CHART ( 3 ) Power can not be turned on Yes Check Con1 and Jw101. Check whether the pin 31 of IC101 is 3V DC. No Y es Check DC Jack and connecter wire. Check Q5 and Q8. ( 4 ) Display can not be Normal Yes Check whether MW, SW are ok

24、. Check whether FM is ok. No No Check Q9, Q102, con1, Q106, Q107. Check Q4, Q101, con1, Q106, Q107. RadioFans.CNYACHT BOY 50 1. IC1-TA2111N 2. IC2-TDA2822 IC CIRCUIT BLOCK DIAGRAM 3. IC101-TC9318FA RadioFans.CNYACHT BOY 50 IC AND TRANSISTOR VOLTAGE CHART IC1-TA2111N IC2- TDA2822 PIN FM AM PIN FM AM

25、1 0.8 0 1 1.25 1.25 2 0 0 2 3 3 3 0.4 1 3 1.25 1.25 4 2.4 2.8 4 0 0 5 0 0 5 0.55 0.55 6 2.9 2.9 6 0 0 7 2.3 2.3 7 0 0 8 2.9 2.9 8 0.55 0.55 9 0 0 10 2.7 2.7 11 2.7 2.7 12 2.0 2.3 13 1.2 1.2 14 1.2 1.2 15 2.9 2.9 16 1.8 2.9 17 0.7 0.7 18 1.0 1.0 19 0.4 0.9 20 2.9 2.9 21 2.9 2.9 22 2.9 2.9 23 2.9 2.9

26、24 2.9 2.9 IC1-TC9318FA PIN FM MW PIN FM MW PIN FM MW 1 1.5 1.5 26 1.54 1.54 51 1.17 1.33 2 1.5 1.5 27 1.07 1.24 52 1.09 1.09 3 1.5 1.5 28 1.30 1.24 53 0 0 4 1.5 1.5 29 1.25 1.25 54 1.31 0 5 1.5 1.5 30 1.25 1.17 55 0 1.21 6 1.5 1.5 31 0 0 56 2.48 2.94 7 1.5 1.5 32 0 2.92 57 2.48 0.22 8 1.5 1.5 33 0

27、0 58 0.22 0.23 9 1.5 1.5 34 0 0 59 0.50 0.40 10 1.5 1.5 35 2.47 2.92 60 1.42 1.42 11 1.5 1.5 36 0 0 61 3 3 12 1.5 1.5 37 0 0 62 0 0 13 1.5 1.5 38 2.82 2.96 63 2.24 2.26 14 1.5 1.5 39 2.96 3.39 64 1.5 1.5 15 1.5 1.5 40 2.96 3.39 16 1.5 1.5 41 0.39 0 17 1.5 1.5 42 1.48 0.02 18 1.5 1.5 43 1.45 1.45 19

28、1.54 1.54 44 0.62 0.60 20 1.54 1.54 45 2.82 2.96 21 1.54 1.54 46 0 0 22 1.54 1.54 47 0 0 23 1.54 1.54 48 0 0 24 1.54 1.54 49 2.82 2.96 25 1.54 1.54 50 1.33 1.49 Transistor FM AM FM AM G 0 0 C 1.9 1.9 Q1 D 1.6 1.6 Q101 B 0.7 0.7 S 0 0 E 0 0 C 0 0 C 1.3 1.3 Q2 B 2.4 2.4 Q102 B 0.6 0.6 E 3 3 E 0 0 C 2.

29、4 2.4 C 1.5 1.5 Q3 B 0 0 Q103 B 0 0 E 0 0 E 0 0 C 2.4 2.4 C 0 0 Q4 B 1 1 Q104 B 0 0 E 0.3 0.3 E 0 0 C 3 3 C 0 0 Q5 B 2.3 2.3 Q105 B 0 0 E 3 3 E 0 0 C 1.8 2.9 C 2.9 2.9 Q6 B 2.3 2.3 Q106 B 2.3 2.3 E 2.8 2.9 E 3.0 3.0 C 2.2 0 C 0 0 Q7 B 0 0.6 Q107 B 0.6 0.6 E 0 0 E 0 0 C 0 0 Q8 B 0.6 0.6 E 0 0 C 2.2 2

30、.2 Q9 B 1.2 1.2 E 0.6 0.6 RadioFans.CNYACHT BOY 50 B E D S G C MM4148 2SA1576 2SB815 1SS367 1N4148 2SC4081 2SC2223 2SA1745 1SS314 2SK212D Diodes Transistors (E:Emitter C:Collector B:Base S:Source G:Gate D:DraSEMICONDUCTOR LEAD IDENTIFICATIONS RadioFans.CNYACHT BOY 50 RadioFans.CNYACHT BOY 50 Ersatzt

31、eilliste Spare Parts List YACHT BOY 50 WR5405 AUDIO/HIFI MATERIAL-NR. / PART NO.: 759816000700 BESTELL-NR. / ORDER NO.: GRO0350 CHROM/CHROME 11 / 2003 POS. NR. ABB. MATERIAL-NR. ANZ. BEZEICHNUNG DESCRIPTION POS. NO. FIG. PART NUMBER QTY. d NDERUNGEN VORBEHALTEN / SUBJECT TO ALTERATION ( ! ) ! Es gel

32、ten die Vorschriften und Sicherheitshinweise gem dem Service Manual “Sicherheit“, Mat.-Num- mer 720108000001, sowie zustzlich die eventuell ab- weichenden, landesspezifischen Vorschriften! The regulations and safety instructions shall be valid as provided by the “Safety“ Service Manual, part number

33、720108000001, as well as the respective national deviations. 759816000700 YACHT BOY 50 / WR 5405 CHROM YACHT BOY 50 / WR 5405 CHROME TAUSCHGERAET EXCHANGE SET 759545015200 DECKEL BATTERIE BATTERY COVER 720114035500 BEDIENUNGSANLEITUNG INSTRUCTION MANUAL D/GB/F/I/P/E/NL/PL/DK/S/FIN D/GB/F/I/P/E/NL/PL/DK/S/FIN RadioFans.CN