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YACHT BOY 80 WR5408 PLL

Service Manual
Sicherheit Safety
Materialnr./Part No. 720108000001

S S

Es gelten die Vorschriften und Sicherheitshinweise gemäß dem Service Manual "Sicherheit", Materialnummer 720108000001, sowie zusätzlich die eventuell abweichenden, landesspezifischen Vorschriften! The regulations and safety instructions shall be valid as provided by the "Safety" Service Manual, part number 720108000001, as well as the respective national deviations.

Dieses Service Dokument ist nur in Datenform verfügbar This Service Document is only available as data Änderungen vorbehalten/Subject to alteration Made by GRUNDIG in Germany · HS-41 0404 http://www.grundig.com

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 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. (4) Adjust T2 to have a max. output and best center marker frequency to 450kHz.
(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 sweep 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 Center marker frequency of 10.7MHz.

AM

T2

FM

T1

c. Instrument Connection
c. Instrument Connection

T2

T1

450KHz Marker

10.7MHz Marker

Test Point TP2 1.2K

IN

RF OUT 2.2K

Test Point TP3

Test Point TP4 1.2K

IN

RF OUT 2.2K

Test Point TP5

FM IF Sweep Generator

FM IF Sweep Generator

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 to ON. (2) Set " 108 MHz". (3) Connect at to the test point TP6 and TP7. (4) Adjust L2 for show on 8.5V. (5) Set "87.5MHz" and check on DVM between 2.2V 2.7V.

(4) ALIGNMENT FOR AM VOLTAGE TUNING RANGE a. Required Instruments DVM b. Alignment Procedure Mode Adjustment T10 VC4 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. (5) Set "1710 kHz" and adjust VC4 for DVM show on 8.5V.

L2

c. Instrument Connection

c. Instrument Connection

L2

T10 VC4

DVM

Test Point TP6
DVM

Test Point TP6

YACHT BOY 80

(5) ALIGNMENT FOR LW VOLTAGE TUNING RANGE a. Required Instruments DVM b. Alignment Procedure

(6) ALIGNMENT FOR FM SENSITIVITY a. Required Instruments FM Signal Generator SSVM b. Alignment Procedure

Mode

Adjustment T11 VC5

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. (5) Set "279 kHz" and adjust VC5 for DVM show on 5.00.

Mode

Adjustment

L1 VC1

c. Instrument Connection

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 FM 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. (8) Repeat steps 4-7 until best sensitivity on these two frequency is formed.

c. Instrument Connection

L1 VC1

T11

VC5

DVM

Test Point TP6
FM Signal Generator
SSVM

Test Point TP5

Test Point TP8

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 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. (8) Repeat steps 4-7 until best sensitivity on these two frequency is formed.

(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 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. (8) Repeat steps 4-7 until best sensitivity on these two frequencies is formed.

L19A VC2

L19B VC3

c. Instrument Connection

c. Instrument Connection

L19

A

B

L19

VC3

VC2

AM Signal Generator

AM Signal Generator

SSVM
60 cm 60 cm

SSVM

Test Point TP8

Test Point TP8

Loop Antenna

The radio is located perpendicularly to the Loop Antenna

Loop Antenna

The radio is located perpendicularly to the Loop Antenna

YACHT BOY 80

(9) ALIGNMENT FOR SW 2 ND LOCAL OSC a. Required Instruments Frequency counter with higher impedunce probe b. Alignment Procedure

(10) ALIGNMENT FOR SW SENSITIVITY a. Required Instruments AM Signal Generator SSVM b. Alignment Procedure

Mode AM

Adjustment T8

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. (4) Adjust T8 to have a reading of 20.9898 20.9902 MHz.
Mode Adjustment Procedure (1) Turn on the 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 and T9. (6) Remove steps (5) until test sensitivity.

Coution : a loading effect could emerge in the circuit if inserted with a lower impedance probe of frequency Counter. c. Instrument Connection

T6 T7 T9

c. Instrument Connection

A

T8

T6

T7

T9

Freq. Counter Test Point TP10

AM Signal Generator

SSVM

Test Point TP5

Test Point TP8

YACHT BOY 80

(11) ALIGNMENT FOR SW SENSITIVITY a. Required Instruments AM Signal Generator SSVM b. Alignment Procedure Mode Adjustment Procedure (1) 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 that of the signal generator. (5) Adjust VC6 to have a minimum reading on the SSVM.

VC6

c. Instrument Connection

VC6

AM Signal Generator

SSVM

Test Point TP5

Test Point TP8

YACHT BOY 80

YACHT BOY 80

YACHT BOY 80

YACHT BOY 80

YACHT BOY 80

10

YACHT BOY 80

YACHT BOY 80

TROUBLESHOOTING FLOW CHART
( 1 ) Weak sensitivity in FM mode
Check whether the sensitivity is recovered if antenna is directly connected to the point between D2 and C5. No Yes Check the antenna terminal and antenna circuit.

( 3 ) PLL does not work
Check whether the gate voltage of Q30 is more than 8.5V DC while the display is 29.999 MHz in the SW band. Yes No Check whether the problem comes from the DC-DC converter.

Yes Check IF waveform. Check Q2 and IC2.

Check whether the frequency at the collector of Q13 is within 51.43875 ~ 51.43925 MHz.

No

Check whether the OSC circuit Of Q14 and the two buffer circuits Of Q13 and Q15 are normal. Yes

Yes

No Check IC1 and Q1. Check the PLL circuit.
Check Q208 and Q209.

No

Check whether the LPF circuit is normal. Yes

( 2 ) Weak sensitivity on SM band
Is the reception in MW/LW band O.K.? No Yes Check the antenna circuit and antenna terminal. No
Check the Q204 and IC201.

Check whether both the VCO and the 2 nd OSC are normal.

Yes

Check whether the AGC circuit is normal.

Check whether the circuit of the 2 nd IF stage(450 kHz) is normal. Yes

No Check D6, C82, C83 and Q22.

Check whether the circuit of the 1 IF stage (21.44MHz) is normal.

st

No Check Q17, Q18, and Q21.

Yes

Check Q12 and the low-pass fiter filter circuit (L5, L8, L9).

YACHT BOY 80

( 4 ) Power cannot be turned on
Check whether IC201 pin 58 is 3V DC. Yes No Check whether IC201 pin 45 is 3V DC. No

Check whether the collector voltage of Q36 is less than 0.2V DC. No

Check safety switch SW201 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

IC CIRCUIT BLOCK DIAGRAM
1. IC1-TA7358AP
BUFFER AMP LOCAL OSC RF AMP MIX.

4. IC201-TC9327AF

5. IC4e 5-AN7117

BIAS

REG.

2. IC3-TA2057N

6. IC202-S-812C30

3. IC3-LA5003

STARTER

REFERENCE VOLTAGE ERROR AMP.

YACHT BOY 80

IC AND TRANSISTOR VOLTAGE CHART
IC1-TA7358AP PIN 1 2 3 4 5 6 7 8 9 FM 0.85 1.55 2.67 1.52 0 2.68 1.96 2.62 2.67 AM ------------------IC2-TA2057N PIN 1 2 3 4 5 6 7 8 9 10 11 PIN 1 2 3 4 5 6 7 8 9 10 FM 7.75 AM 7.80 12 13 14 15 16 17 18 19 20 21 22 23 24 FM 1.89 0.93 0 1.89 5.24 5.25 0 0 0 4.38 4.85 1.52 1.47 4.66 0 3.47 1.37 0.18 1.19 1.05 1.89 1.89 5.25 1.89 AM 1.93 0.95 0 1.92 5.04 5.34 0 0 0 4.39 4.96 1.52 1.47 4.75 0 0 1.39 1.39 1.31 1.38 1.93 1.93 5.35 0.40 IC202-S-812C30 PIN 1 2 3 FM 5.30 0 2.97 AM 5.30 0 2.97 IC4,5-AN7117 PIN 1 2 3 4 5 6 7 8 9 FM 2.75 0 2.73 2.74 2.64 5.89 0 3.31 5.94 AM 2.74 0 2.73 2.73 2.64 5.89 0 3.31 5.94 IC3-LA5003 PIN 1 2 3 4 FM 5.33 0 3.01 4.70 AM 5.43 0 3.01 4.87
IC201-TC9327F PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 FM 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 0 AM 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 1.50 0 PIN 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 FM 0 0 0 0.22 0.25 0.23 0.25 0 0 0 0 0 0 --0 0 3.29 --0 --------0.57 0 0 0 2.70 0 1.50 AM 0 0 0 0.22 0.25 0.23 0.25 0 0 0 0 0 0 --0 0 3.29 --0 --------0.57 0
Q11 Q10

Transistor
PIN 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 FM 1.50 0 --1.16 --0.19 1.76 0 0 1.27 0 2.80 1.55 0.32 0 1.41 2.94 0.74 2.21 1.49 AM 1.50 0 --1.20 --0.18 1.81 0 0 0 0.72 2.80 1.55
Q6 Q5 Q4 Q3 Q2 C Q1 B E D S G C B E C B E C B E C B E C Q7 B E C Q8 B E C Q9 B E C B E C B E D Q12 S G FM 2.68 1.99 1.31 2.35 0.01 0 1.89 1.16 1.90 1.88 1.28 1.90 0 0.64 0 1.15 0 0 0 0.76 0 3.47 0 0 1.90 0 0 ------------------AM ------2.35 0.01 0 0 5.92 1.98 1.97 1.36 1.98 1.44 0 0 0 0.65 0 0 0.76 0 0 0.61 0 0 0.65 0 1.07 0.56 0 1.81 0.39 0 5.4 0.69 0.02 Q24 Q23 Q22 Q21 Q20 Q19 Q18 Q17 Q16 Q15 Q14 Q13 C B E C B E C B E C B E D S G D S G C B E C B E D S G C B E C B E C B E FM ------------------2.73 2.21 2.89 ------------------------------------0 0.63 0 1.90 1.88 1.90 AM 2.07 0.71 0 1.85 1.55 0 1.09 0.70 0 0 2.93 2.97 5.08 1.14 0 5.08 1.14 0 1.30 1.12 0.53 1.69 0 0 5.50 1.04 0 2.41 0.75 0.19 0 0 0 1.98 1.96 1.98 Q36 Q35 Q34 Q33 Q32 Q31 Q30 Q29 Q28 Q27 Q26 Q25 C B E C B E C B E C B E C B E D S G C B E C B E C B E C B E C B E C B E FM 2.80 2.28 2.89 1.87 0.16 0 0 0.63 9 0 0.17 0 0 0.35 0 2.36 8.79 2.56 1.15 5.33 5.95 0 0.66 0 0 5.30 2.89 5.9 0.8 0 5.95 5.90 0 0.10 0.64 0 AM 0 2.91 2.97 0 0.62 0 0 0 0 0 0.61 0 0 0.63 0 2.54 8.79 2.73 5.92 5.21 5.94 5.32 0 0 2.86 2.19 2.89 5.9 0.8 0 5.95 5.90 0 0.10 0.64 0

15.35 15.34 8.03 8.03 0.10 5.32 0.93 5.32 5.30 0 8.03 8.03 0.10 5.32 0.94 5.33 5.32 0

0.32 0 1.41 2.93 0.73 2.20 1.48

0 0 2.90 0 1.50

YACHT BOY 80

SEMICONDUCTOR LEAD IDENTIFICATION
FM C Q37 B E C Q38 B E C Q39 B E C Q40 B E 5.95 5.31 5.99 0 5.52 5.99 5.83 0 0.16 2.35 0 0 AM 5.95 5.31 5.99 0 5.85 5.99 5.52 0 0.04 2.35 0 0 Q205 Q204 Q203 Q202 Q201 C B E C B E C B E C B E C B E C Q206 B E C Q207 B E D Q208 S G C Q209 B E FM 4.60 0 0 3.85 2.97 3.85 2.95 2.45 2.97 1.19 0.73 0 0 0 0 0 0 0 0 0 0 2.81 0.75 0.18 2.07 0 0 AM 4.60 0 0 3.85 2.97 3.85 2.95 2.45 2.97 1.14 0.74 0 0 0 0 0 0 0 0 0 0 2.81 0.75 0.18 0.81 0.60 0

Transistors C E C B B E 2SA1020Y B E C

2SC2812L6

2SC4933F4 2SC4177L7 2SA1576A/R 2SC4081R

C

B

E

DA114

(E: Emitter C: Collector B: Base S: Source G: Gate D: Drain)

Diodes

A

C RL-S4148

1N4002 HBZX55C4V3

YACHT BOY 80

YACHT BOY 80

Ersatzteilliste Spare Parts List 11 / 2003
POS. NR. ABB. POS. NO. FIG. MATERIAL-NR. ANZ. PART NUMBER QTY. BEZEICHNUNG

AUDIO/HIFI
YACHT BOY 80 WR5408 PLL
MATERIAL-NR. / PART NO.: 759816000800 BESTELL-NR. / ORDER NO.: GRO0450 CHROM/CHROME

d

DESCRIPTION

©

759816000800

YACHT BOY 80 / WR 5408 PLL CHROM TAUSCHGERAET DECKEL BATTERIE BEDIENUNGSANLEITUNG D/GB/F/I/P/E/NL/PL/DK/S/FIN

YACHT BOY 80 / WR 5408 PLL CHROME EXCHANGE SET BATTERY COVER INSTRUCTION MANUAL D/GB/F/I/P/E/NL/PL/DK/S/FIN

759545015300 720114036000

Es gelten die Vorschriften und Sicherheitshinweise gemäß dem Service Manual "Sicherheit", Mat.-Nummer 720108000001, sowie zusätzlich die eventuell abweichenden, landesspezifischen Vorschriften!

! (!)

The regulations and safety instructions shall be valid as provided by the "Safety" Service Manual, part number 720108000001, as well as the respective national deviations.
ÄNDERUNGEN VORBEHALTEN / SUBJECT TO ALTERATION

YACHT BOY 80