GrundigYachtBoy80 维修电路图、原理图.pdf

《GrundigYachtBoy80 维修电路图、原理图.pdf》由会员分享，可在线阅读，更多相关《GrundigYachtBoy80 维修电路图、原理图.pdf（20页珍藏版）》请在收音机爱好者资料库上搜索。

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 th

2、e 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 80 WR5408 PLL Dieses Service Dokument ist nur in Datenform verfgbar This Service Document is only available as data nde

3、rungen vorbehalten/Subject to alteration Made by GRUNDIG in Germany HS-41 0404 YACHT BOY 80? ALIGNMENT INSTRUCTIONS (1) ALIGNMENT FOR AM IF a. Required Instruments AM IF Sweep Generator with Scope b. Alignment Procedure Mode Adjustment Procedure (1) Turn on the radio. (2) Connect the input of the AM

4、 IF sweep generation in series with a resister of 1.2K Ohm to the test point TP2 and TP7. (3) Connect the RF output of the AM IF sweep generation in series with a resister of 2.2K ohm to another test point TP3. AM T2 (4) Adjust T2 to have a max. output and best center marker frequency to 450kHz. c.

5、Instrument Connection T2 INOUT 1.2K2.2K RF FM IF Sweep Generator 450KHz Marker Test Point TP2 Test Point TP3 (2) ALIGNMENT FOR FM IF a. Required Instruments FM IF Sweep Generator with Scope b. Alignment Procedure Mode Adjustment Procedure (1) Turn on the radio. (2) Connect the input of the FM IF swe

6、ep generation in series with a resister of 1.2k Ohm to the test point TP4 and TP7. (3) Connect the RF output of the FM IF sweep generation in series with a resister of 2.2k ohm to another test point TP5. (4) Adjust T1 have a max. output and best symmetrical S curve with respect to the FM T1 Center m

7、arker frequency of 10.7MHz. c. Instrument Connection T1 RF 1.2K IN 2.2K OUT Test Point TP4 Test Point TP5 FM IF Sweep Generator 10.7MHz Marker YACHT BOY 80? (3) ALIGNMENT FOR FM VOLTAGE TUNING RANGE a. Required Instruments DVM b. Alignment Procedure Mode Adjustment Procedure (1) Set the power switch

8、 to ON. (2) Set “ 108 MHz”. (3) Connect at to the test point TP6 and TP7. (4) Adjust L2 for show on 8.5V. L2 (5) Set “87.5MHz” and check on DVM between 2.2V 2.7V. c. Instrument Connection L2 Test Point TP6 DVM (4) ALIGNMENT FOR AM VOLTAGE TUNING RANGE a. Required Instruments DVM b. Alignment Procedu

9、re Mode Adjustment Procedure (1) Set the power switch to ON. (2) Set “ 520 kHz”. (3) Connect at to the test point TP6 and TP7. (4) Adjust T10 for show on 1.10V. T10 VC4 (5) Set “1710 kHz” and adjust VC4 for DVM show on 8.5V. c. Instrument Connection VC4 T10 Test Point TP6 DVM YACHT BOY 80? (5) ALIGN

10、MENT FOR LW VOLTAGE TUNING RANGE a. Required Instruments DVM b. Alignment Procedure Mode Adjustment Procedure (1) Set the power switch to ON. (2) Set “ 153 kHz”. (3) Connect at to the test point TP6 and TP7. (4) Adjust T11 for show on 1.20V. T11 VC5 (5) Set “279 kHz” and adjust VC5 for DVM show on 5

11、.00. c. Instrument Connection VC5T11 Test Point TP6 DVM (6) ALIGNMENT FOR FM SENSITIVITY a. Required Instruments FM Signal Generator SSVM b. Alignment Procedure Mode Adjustment Procedure (1) Set the power switch to ON. (2) Connect a SSVM to the test point TP8 and TP9. (3) Connect the output of the F

12、M signal generator to the test point TP5 and TP7. (4) Set FM 90 MHz. (5) Adjust L1 to have a max. Audio output. (6) Set FM 106 MHz. (7) Adjust VC1 to have a max. Audio output. L1 VC1 (8) Repeat steps 4-7 until best sensitivity on these two frequency is formed. c. Instrument Connection L1 VC1 Test Po

13、int TP5 FM Signal Generator Test Point TP8 SSVM YACHT BOY 80? (7) ALIGNMENT FOR AM SENSITIVITY a. Required Instruments AM Signal Generator SSVM b. Alignment Procedure Mode Adjustment Procedure (1) Set the power switch to ON. (2) Connect a SSVM to the test point TP8 and TP9. (3) Connect the output of

14、 the FM signal generator to the test point TP8 and TP9. (4) Set AM 600 kHz. (5) Adjust L19A to have a max. Audio output. (6) Set AM 1400 kHz. (7) Adjust VC2 to have a max. Audio output. L19A VC2 (8) Repeat steps 4-7 until best sensitivity on these two frequency is formed. c. Instrument Connection A

15、L19 VC2 Loop Antenna The radio is located perpendicularly to the Loop Antenna 60 cm AM Signal Generator Test Point TP8 SSVM (8) ALIGNMENT FOR LW SENSITIVITY a. Required Instruments AM Signal Generator SSVM b. Alignment Procedure Mode Adjustment Procedure (1) Set the power switch to ON. (2) Connect a

16、 SSVM to the test point TP8 and TP9. (3) Connect the output of the AM signal generator to a standard loop antenna. (4) Set LW 162 kHz. (5) Adjust L19B to have a max. Audio output. (6) Set LW 270 kHz. (7) Adjust VC3 to have a max. Audio output. L19B VC3 (8) Repeat steps 4-7 until best sensitivity on

17、these two frequencies is formed. c. Instrument Connection B L19 VC3 Loop Antenna The radio is located perpendicularly to the Loop Antenna 60 cm AM Signal Generator Test Point TP8 SSVM YACHT BOY 80? (9) ALIGNMENT FOR SW 2 ND LOCAL OSC a. Required Instruments Frequency counter with higher impedunce pr

18、obe b. Alignment Procedure Mode Adjustment Procedure (1) Turn the radio ON. (2) Turn the frequency for away from any station to avoid interference. (3) Connect the test probes of frequency counter to TP10 and TP7. AM T8 (4) Adjust T8 to have a reading of 20.9898 20.9902 MHz. Coution : a loading effe

19、ct could emerge in the circuit if inserted with a lower impedance probe of frequency Counter. c. Instrument Connection T8 Freq. Counter Test Point TP10 (10) ALIGNMENT FOR SW SENSITIVITY a. Required Instruments AM Signal Generator SSVM b. Alignment Procedure Mode Adjustment Procedure (1) Turn on the

20、radio. (2) Tune the radio band frequency to 15.100 MHz. (3) Feed a signal with modulation from the AM signal generator output to tese point TP5 and connect a SSVM to the speaker (TP8). (4) Tune the generator frequency to exactly the same as that of the radio frequency Displayed. (5) Adjust T6, T7 an

21、d T9. T6 T7 T9 (6) Remove steps (5) until test sensitivity. c. Instrument Connection T6 A T7 T9 Test Point TP5 AM Signal Generator Test Point TP8 SSVM YACHT BOY 80? (11) ALIGNMENT FOR SW SENSITIVITY a. Required Instruments AM Signal Generator SSVM b. Alignment Procedure Mode Adjustment Procedure (1)

22、 Set the power switch to the ON position. (2) Set the band to SW. SSB switch to ON, and clarify.ur to center position. (3) Feed a signal without modulation from the signal generator to the EXT ANT jack, And connect a SSVM to the test point TP8. (4) Tune the radio frequency to exactly the same as tha

23、t of the signal generator. VC6 (5) Adjust VC6 to have a minimum reading on the SSVM. c. Instrument Connection VC6 Test Point TP5 AM Signal Generator Test Point TP8 SSVM YACHT BOY 80? YACHT BOY 80? YACHT BOY 80? YACHT BOY 80? YACHT BOY 80? 10 YACHT BOY 80? YACHT BOY 80? ( 1 ) Weak sensitivity in FM m

24、ode Check whether the sensitivity is recovered if antenna is directly Yes Check the antenna terminal and connected to the point between antenna circuit. D2 and C5. No Yes Check IF waveform. Check Q2 and IC2. Yes No Check IC1 and Q1. Check the PLL circuit. ( 2 ) Weak sensitivity on SM band Yes Is the

25、 reception in MW/LW band O.K.? Check the antenna circuit and antenna terminal. No No Yes Check whether both the VCO and the 2 nd OSC are normal. Check whether the AGC circuit is normal. No Check D6, C82, C83 and Q22. Check whether the circuit of the 2 nd IF stage(450 kHz) is normal. Yes No Check Q17

26、, Q18, and Q21. Check whether the circuit of the 1st IF stage (21.44MHz) is normal. Yes Check Q12 and the low-pass fiter filter circuit (L5, L8, L9). TROUBLESHOOTING FLOW CHARTTROUBLESHOOTING FLOW CHART ( 3 ) PLL does not work Check whether the gate voltage of Q30 is more than 8.5V DC No Check wheth

27、er the problem comes while the display is 29.999 MHz in from the DC-DC converter. the SW band. Yes Check whether the frequency at the No Check whether the OSC circuit Of collector of Q13 is within 51.43875 Q14 and the two buffer circuits Of 51.43925 MHz. Q13 and Q15 are normal. Yes No Check Q208 and

28、 Q209. Check whether the LPF circuit is normal. Yes Check the Q204 and IC201. YACHT BOY 80? ( 4 ) Power cannot be turned on No Check whether IC201 pin 58 is 3V DC. Check whether IC201 pin 45 is 3V DC. Yes No No Check whether the collector voltage of Q36 is less than 0.2V DC. Check safety switch SW20

29、1 and the circuits of the key matrix. No Check Q36. Check Q201. Yes Check whether the collector voltage of Q37 is more than 5.8V DC. No Check Q37. YACHT BOY 80? 1. IC1-TA7358AP RF AMP BIAS MIX. BUFFER AMP REG. LOCAL OSC 3. IC3-LA5003 ERROR AMP. VOLTAGE STARTER REFERENCE IC CIRCUIT BLOCK DIAGRAMIC CI

30、RCUIT BLOCK DIAGRAM 2. IC3-TA2057N 5. IC4Ee Ee 5-AN7117 6. IC202-S-812C30 4. IC201-TC9327AF YACHT BOY 80? IC1-TA7358AP IC2-TA2057N IC3-LA5003 PIN FM AM PIN FM AMPIN FM AM 1 0.85 - 1 1.89 1.931 5.33 5.43 2 1.55 - 2 0.93 0.952 0 0 3 2.67 - 3 0 03 3.01 3.01 4 1.52 - 4 1.89 1.924 4.70 4.87 5 0 - 5 5.24

31、5.04 6 2.68 - 6 5.25 5.34IC4,5-AN7117 7 1.96 - 7 0 0PIN FM AM 8 2.62 - 8 0 01 2.75 2.74 9 2.67 - 9 0 02 0 0 10 4.38 4.39 3 2.73 2.73 11 4.85 4.96 4 2.74 2.73 PIN FM AM 12 1.52 1.52 5 2.64 2.64 1 7.75 7.80 13 1.47 1.47 6 5.89 5.89 2 15.35 15.34 14 4.66 4.75 7 0 0 3 8.03 8.03 15 0 0 8 3.31 3.31 4 8.03

32、 8.03 16 3.47 0 9 5.94 5.94 5 0.10 0.10 17 1.37 1.39 6 5.32 5.32 18 0.18 1.39 IC202-S-812C30 7 0.93 0.94 19 1.19 1.31 PIN FM AM 8 5.32 5.33 20 1.05 1.38 1 5.30 5.30 9 5.30 5.32 21 1.89 1.93 2 0 0 10 0 22 1.89 1.93 3 2.97 2.97 23 5.25 5.35 24 1.89 0.40 IC AND TRANSISTOR VOLTAGE CHART IC AND TRANSISTO

33、R VOLTAGE CHART 0 IC201-TC9327F PIN FM AM PIN FM AM PIN FM AM 1 1.50 1.50 31 0 0 61 1.50 1.50 2 1.50 1.50 32 0 0 62 0 0 3 1.50 1.50 33 0 0 63 - - 4 1.50 1.50 34 0.22 0.22 64 1.16 1.20 5 1.50 1.50 35 0.25 0.25 65 - - 6 1.50 1.50 36 0.23 0.23 66 0.19 0.18 7 1.50 1.50 37 0.25 0.25 67 1.76 1.81 8 1.50 1

34、.50 38 0 0 68 0 0 9 1.50 1.50 39 0 0 69 0 0 10 1.50 1.50 40 0 0 70 1.27 0 11 1.50 1.50 41 0 0 71 0 0.72 12 1.50 1.50 42 0 0 72 2.80 2.80 13 1.50 1.50 43 0 0 73 1.55 1.55 14 1.50 1.50 44 - - 74 0.32 0.32 15 1.50 1.50 45 0 0 75 0 0 16 1.50 1.50 46 0 0 76 1.41 1.41 17 1.50 1.50 47 3.29 3.29 77 2.94 2.9

35、3 18 1.50 1.50 48 - - 78 0.74 0.73 19 1.50 1.50 49 0 0 79 2.21 2.20 20 1.50 1.50 50 - - 80 1.49 1.48 21 1.50 1.50 51 - - 22 1.50 1.50 52 - - 23 1.50 1.50 53 - - 24 1.50 1.50 54 0.57 0.57 25 1.50 1.50 55 0 0 26 1.50 1.50 56 0 0 27 1.50 1.50 57 0 0 28 1.50 1.50 58 2.70 2.90 29 1.50 1.50 59 0 0 30 0 0

36、60 1.50 1.50 Transistor FM AM FM AM FM AM C 2.68 - C - 2.07 C 2.80 0 Q1 B 1.99 - Q13 B - 0.71 Q25 B 2.28 2.91 E 1.31 - E - 0 E 2.89 2.97 D 2.35 2.35 C - 1.85 C 1.87 0 Q2 S 0.01 0.01 Q14 B - 1.55 Q26 B 0.16 0.62 G 0 0 E - 0 E 0 0 C 1.89 0 C - 1.09 C 0 0 Q3 B 1.16 5.92 Q15 B - 0.70 Q27 B 0.63 0 E 1.90

37、 1.98 E - 0 E 9 0 C 1.88 1.97 C 2.73 0 C 0 0 Q4 B 1.28 1.36 Q16 B 2.21 2.93 Q28 B 0.17 0.61 E 1.90 1.98 E 2.89 2.97 E 0 0 C 0 1.44 D - 5.08 C 0 0 Q5 B 0.64 0 Q17 S - 1.14 Q29 B 0.35 0.63 E 0 0 G - 0 E 0 0 C 1.15 0 D - 5.08 D 2.36 2.54 Q6 B 0 0.65 Q18 S - 1.14 Q30 S 8.79 8.79 E 0 0 G - 0 G 2.56 2.73

38、C 0 0 C - 1.30 C 1.15 5.92 Q7 B 0.76 0.76 Q19 B - 1.12 Q31 B 5.33 5.21 E 0 0 E - 0.53 E 5.95 5.94 C 3.47 0 C - 1.69 C 0 5.32 Q8 B 0 0.61 Q20 B - 0 Q32 B 0.66 0 E 0 0 E - 0 E 0 0 C 1.90 0 D - 5.50 C 0 2.86 Q9 B 0 0.65 Q21 S - 1.04 Q33 B 5.30 2.19 E 0 0 G - 0 E 2.89 2.89 C - 1.07 C - 2.41 C 5.9 5.9 Q1

39、0 B - 0.56 Q22 B - 0.75 Q34 B 0.8 0.8 E - 0 E - 0.19 E 0 0 C - 1.81 C 0 0 C 5.95 5.95 Q11 B - 0.39 Q23 B 0.63 0 Q35 B 5.90 5.90 E - 0 E 0 0 E 0 0 D - 5.4 C 1.90 1.98 C 0.10 0.10 Q12 S - 0.69 Q24 B 1.88 1.96 Q36 B 0.64 0.64 G - 0.02 E 1.90 1.98 E 0 0 YACHT BOY 80? FM AM FM AM C 5.95 C 4.60 4.60 Q37 B

40、 5.31 5.31 Q201 B 0 0 E 5.99 5.99 E 0 0 C 0 0 C 3.85 3.85 Q38 B 5.52 5.85 Q202 B 2.97 2.97 E 5.99 5.99 E 3.85 3.85 C 5.83 5.52 C 2.95 2.95 Q39 B 0 0 Q203 B 2.45 2.45 E 0.16 0.04 E 2.97 2.97 C 2.35 2.35 C 1.19 1.14 Q40 B 0 0 Q204 B 0.73 0.74 E 0 0 E 0 0 C 0 0 Q205 B 0 0 E 0 0 C 0 0 Q206 B 0 0 E 0 0 C

41、 0 0 Q207 B 0 0 E 0 0 D 2.81 2.81 Q208 S 0.75 0.75 G 0.18 0.18 C 2.07 0.81 Q209 B 0 0.60 E 0 0 5.95 C A C E C 2SC2812L62SA1020Y DA114 BE C C B BE BE 1N4002 HBZX55C4V3 Diodes Transistors RL-S4148 2SC4933F4 2SC4177L7 2SA1576A/R 2SC4081R (E: Emitter C: Collector B: Base S: Source G: Gate D: Drain) SEMI

42、CONDUCTOR LEAD IDENTIFICATIONSEMICONDUCTOR LEAD IDENTIFICATION YACHT BOY 80? YACHT BOY 80? Ersatzteilliste Spare Parts List YACHT BOY 80 WR5408 PLL AUDIO/HIFI MATERIAL-NR. / PART NO.: 759816000800 BESTELL-NR. / ORDER NO.: GRO0450 CHROM/CHROME ? 11 / 2003 POS. NR. ABB.MATERIAL-NR.ANZ.BEZEICHNUNGDESCR

43、IPTION POS. NO. FIG.PART NUMBERQTY. d NDERUNGEN VORBEHALTEN / SUBJECT TO ALTERATION ( ! ) ! Es gelten die Vorschriften und Sicherheitshinweise gem dem Service Manual Sicherheit, Mat.-Num- mer 720108000001, sowie zustzlich die eventuell ab- weichenden, landesspezifischen Vorschriften! The regulations

44、 and safety instructions shall be valid as provided by the Safety Service Manual, part number 720108000001, as well as the respective national deviations. 759816000800YACHT BOY 80 / WR 5408 PLL CHROMYACHT BOY 80 / WR 5408 PLL CHROME TAUSCHGERAETEXCHANGE SET 759545015300DECKEL BATTERIEBATTERY COVER 720114036000BEDIENUNGSANLEITUNGINSTRUCTION MANUAL D/GB/F/I/P/E/NL/PL/DK/S/FIND/GB/F/I/P/E/NL/PL/DK/S/FIN