Grundig K-RCD 500 Service Manual Download Page 14

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K-RCD 500

2 - 8

Schaltpläne und Platinenabbildungen / Circuit Diagrams and Layout of PCBs

GRUNDIG Service

K-RCD 500

2 - 7

Schaltpläne und Platinenabbildungen / Circuit Diagrams and Layout of PCBs

GRUNDIG Service

Schaltbild / Circuit Diagram
CD

1
2
3
4
5
6
7

CN1

TO CN101

PAGE 2-9

1
2
3
4
5

1
2
3

CN5

CN6

TO AUDIO BD.

CN303

PAGE 2-3

TO AUDIO BD.

CN405

PAGE 2-3

1 2 3 4 5 6 7 8 9 1 0

0 0.5 0.9 0.3 0 0 8.4 8.4 0.9 0.5

IC3 BA6209N

CN2

CON103

PAGE 2-9

C0N104

PAGE 2-9

IC2

TC9236F

DATA PROCESSOR

SERVO PROCESSOR

2 VREF

SEL

FCSI

FKIC

FEL1

FEL2

FEI

TESH

TEOF

SBAD

REFB

VREF

RF1

AGND

DTSC2

KFMO

DTSC1

AVCC

PDCND

PDO

TMAX

LPFN

LPFO

VCOF

CLCK

SUDO

CCNT

RST

4MCK

BUCK

CCK

BUS3

BUS2

BUS1

BUS0

DGND

DVCC

SBOK

SUBQ

SUBSYC

PFCK

SPDA

COFS

CKOM

TEST5

TEST4

DMPC

DMFC

DMON

TEST

FMFB

FMON

TKIC

TGUH1

TGUH2

TGUL

TEL1

TEL2

DFCT

TEST1

LOCK

VCOX

PLCK

MOD0

MOD1

MOD2

WDCK

CHCK

BCK

AOUT

CKSE

DOUT

TEST2

EMPH

TEST3

MCK

4.0

2.3

2.1

1.2

1.6

2.1

2.6

2.5

2.1

1.8

4.2

2.1

TP0

TPI

TNI

FNI

FPI

LDO

MDI

RFN

RFO

RFI

VREF

IC1

TA8191F

RF AMP

FOCUS TRACKING

SLED SPINDLE

SERVO AMP

FABO

FMEP

FMEN

FMEO

FMPO

PVR

DMPO

DMEO

DMEN

DMEP

VCC

TSN

TSO

TS1P

TS1N

TS1O

TS2P

TS2N

TS2O

2VRN

2VRP

2VRO

REFP

SBAD

FEB

FEO

SEL

VEE

FSN

FSO

COSC

OSCI

GND

IC9

UPD6379A

RCH

LCH

BUS0

BUS1

BUS2

BUS3

CCK

BUCK

SLSW

C D R S T

8.4

12.5

7.7

8.3

0.4

8.4V

4.8

2.5

5.0

7.7

8.4

IC4

BA6398FB

3.7

4.4

2.1

2.1

5.0

2.1

4.2

4.4

4.1

C50

2.2P

R89

2.2K

R88

3.9K

R90
22K

C55
33P

C49
0.1

TP 2
VREF

TP 1

C47

220U

10V

R91

4.7K

C48

0.01

R85
10K

C45

0.18

R55
180

R84
680

R86
10K

VR2

4.7K

C42

.22U

50V

C53

0.01

R56

8.2K

C46
33U
16V

6.8K

C35

3.3U

50V

R65

6.8K

R51 38K

R62 820

R60 15K

R58 68K

C41

0.033

R59
47K

C43

0.01

C44

220U

10V

R40
10K

R41

C24

100P

C26 3300P

C25 3300P

C23 0.1

C27 0.01

C28 1000P

R43 33K

R48 1.5K

C18

0.01

C17

0.01

R37
47K

R38
33K

R39

2.2M

R36 220K

C22

C220U 10V

C12
39P

16.93

MHz

C13
39P

R13

R6
1K

DTA144TS

Q9
C8550

Q11

2SA933S

Q601
C458

Q602
C458

Q603

2SB1185

DTC124XS

DC-VOLTAGES MEASURED AGAINST
MINUS TERMINAL (GND) AT 230V AC.
...V = CD PLAYBACK
THE MEASURED VALUES GIVEN IN THE
CIRCUIT DIAGRAM ARE APPROXIMATES.

CD-DECKELSCHALTER

CD DOOR SWITCH

CD2 CD1

KURVENRADSCHALTER
CAM SWITCH
CD2 CD1

CD-LAUFWERKSCHLITTEN / CD SLEDGE

SCHLITTENMOTOR
TRAY MOTOR

Summary of Contents for K-RCD 500

Page 1: ...Unterlagen für den Komplettservice Additionally required Service Manuals for the Complete Service K RCD 500 75 3118 1051 G DG 6051 CD Remote Control 75954 036 11 K RCD 500 2 08 OPER BATT FM STEREO REMOTE SENSOR CONTINUOUS PLAY REPEAT PROGRAM SKIP STOP PLAY PAUSE S T 9 2 LC DISPLAY CD 2 CD 1 STEREO CASSETTE RECORDER OTR PLAY REW F FWD STOP EJECT PAUSE 9 R Q B 0 OPEN OPEN 9 S T 2 REPEAT STOP PLAY PA...

Page 2: ...PCBs 2 1 2 12 Wiring Diagram 2 1 Circuit Diagrams Tuner Cass AF Section 2 3 CD Section 2 7 Control Section Remote Control 2 9 Layout of the PCBs Tuner Cass AF Section 2 5 CD Section Control Section 2 10 IC Block Diagrams 2 11 Exploded Views and Spare Parts List 3 1 3 7 Exploded Views 3 1 Spare Parts List 3 5 j Inhaltsverzeichnis Seite Allgemeiner Teil 1 3 1 10 Technische Daten 1 3 Servicehinweise ...

Page 3: ...icehinweise Cassettenteil ÜberprüfenSievorBeginnderService Arbeiten ob die Magnetköpfe die Tonwelle und die Gummiandruckrolle frei von Bandabrieb sind Zum Reinigen dieser Teile verwenden Sie ein mit Spiritus oder Reini gungsbenzin getränktes Wattestäbchen dadurch verbessert sich der Aufnahme und Wiedergabepegel sowie der Bandlauf Nach dem Ersatz von Magnetköpfen oder sonstiger Bauteile müssen die ...

Page 4: ... have to be loosened they must be resecured in the same manner when the repair is completed Magnetic tools shall not be brought near the magnetic heads Each time repair work has been carried out on the cassette drive mechanism clean the heads the capstan and the rubber pinch roller with spirit or cleaning benzine 1 Gehäuserückteil abnehmen Fig 1 Batteriefachdeckel abnehmen 8 Schrauben A lang und 2...

Page 5: ...g 5 Fit new flywheel clean capstan in white spirit and reassemble in reverse order 5 Dismantling of Spool Carrier forward wind Fig 5 Remove the drive mechanism see para 2 Push the catch R in the direction of arrow A and take off lever S take care of leg spring T Lift off the spool carrier U forward wind by means of a screw driver S T S T O N A R P Q O U Fig 5 3 Motor ausbauen Fig 3 und 4 Laufwerk ...

Page 6: ...chalter d und e Fig 10 abschrauben 6 Schrauben f herausdrehen Fig 10 und CD Laufwerkchassis abnehmen 6 Removing the Chassis Fig 2 and 6 Remove the rear panel of the cabinet see para 1 Undo the screw D and remove the record switching lever E Fig 2 Undo 2 screws V Press the top of the cabinet upwards at the positions W and X Remove the chassis towards the rear Disconnect the plug in connections if n...

Page 7: ... necessary When refitting the sledge of the drive mechanism note the marked position h 1 9 Removing the CD Mechanism Remove the chassis of the CD drive mechanism see para 7 Undo 4 screws j Fig 11 and remove the respective holding brackets Take out the CD drive mechanism with the frame Undo 4 screws k Fig 12 Remove the CD mechanism Take care of the buffers i red and m blue Fig 12 The buffer pressur...

Page 8: ...evice q carefully in the direction of the arrow 1 Fig 13 Move the guide rail r in the direction of arrow 2 and remove the laser pick up Fig 14 n Laseranschlußplatte Laser PCB Fig 14 r 2 Fig 13 q 1 Fig 16 Achtung beim Einbau einer neuen Lasereinheit Die Laserdiode ist gegen statische Aufladung beim Transport kurz geschlossen Nach dem Einbau und Anschluß der Lasereinheit muß die Kurzschlußlötstelle ...

Page 9: ...der Kopfeinstellschraube 1 den linken und rechten Kanal auf Pegelmaximum einstellen Der Pegelunterschied von Kanal zu Kanal darf maximal3dB betragen Oszillatorfrequenz 60kHz 10kHz Einstellen mit T301 Die Vormagnetisierungsspannung beträgt ca 15mV gemessen mit einem kapazitiven Spannungsteiler 1 1000 Einstellen mit VR301 1 1 AM ZF 2 AM MW Oszillator 3 AM MW Vorkreis 4 FM ZF 5 FM Oszillator 6 FM Vor...

Page 10: ... should be 60kHz 10 kHz Adjust with T301 The bias voltage is approx 15mV measured with a 1 1000 capacitive voltage divider Adjust with VR301 1 Tape speed 2 Take up torque on Start 3 Wow and flutter 4 Head gap angle Azimuth 5 Bias frequency 6 Bias voltage Adjustment Preparations Adjustment Process 3 Tuner Measuring instruments Standard signal sweep signal generator oscilloscope frequency counter 1 ...

Page 11: ...er PCB Bedienplatte Keyboard PCB CD Platte CD PCB Cass Laufwerk Cass Drive Mechanism Audioplatte Audio PCB Netzteilplatte Power Supply PCB L R 2 2 5 6 4 3 4 7 6 2 2 8 8 7 2 3 2 R W BL BL R W BL W A W KOPF R P HEAD K RCD 500 Schaltpläne und Platinenabbildungen Circuit Diagrams and Layout of PCBs Schaltpläne und Platinenabbildungen Circuit Diagrams and Layout of PCBs 2 2 2 1 GRUNDIG Service GRUNDIG ...

Page 12: ...d Circuit Diagram Audio Tuner ch1 ch2 MUTE COM BA 3308 NF 2 ALC Vcc GND 1 2 3 4 5 6 7 8 9 INPUT 1 INPUT 2 OUTPUT 1 OUTPUT 2 NF 1 RF IN GND IF OUT Vcc RF OUT OSC OSC RF MIX REG OSC BUFFER Vref 1 2 3 4 5 6 7 8 9 LA 1186 GND BAND SWITCH REC SWITCH FUNCTION SWITCH AM FM FM ST CD RAD TAP RECORD PLAY SW301 A F SW401 A E SW201 A B IC202 LA1805 IC201 LA1186N IC301 BA 3308 TP 2 TP 3 TP 1 TP 4 START CASS DE...

Page 13: ... 2 6 2 5 GRUNDIG Service GRUNDIG Service Leiterplatten PCBs Audio Tuner Netzteil Power Supply Bestückungsseite Component side Netzteilplatte Power Supply PCB Audioplatte Audio PCB Tunerplatte Tuner PCB 1 IC201 IC202 IC301 1 IC 401 Für die tatsächliche Bauteilebestückung ist das Schaltbild maßgebend The circuit diagram is relevant for the actual component assembly ...

Page 14: ...FNI FPI LDO MDI RFN RFO RFI VREF IC1 TA8191F RF AMP FOCUS TRACKING SLED SPINDLE SERVO AMP 33 32 31 30 29 28 27 26 25 24 23 FABO FMEP FMEN FMEO FMPO PVR DMPO DMEO DMEN DMEP VCC 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 TSN TSO TS1P TS1N TS1O TS2P TS2N TS2O 2VRN 2VRP 2VRO REFP SBAD FEB FEO SEL VEE FSN FSO COSC OSCI GND IC9 UPD6379A RCH LCH BUS0 BUS1 BUS2 BUS3 CCK BUCK SLSW CD...

Page 15: ...it diagram is relevant for the actual component assembly 1 1 1 6 5 4 3 2 1 1 0 9 8 7 1 7 R114 CD1 LED101 CD2 LED104 5V 5V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 SEG27 SEG26 SEG25 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12...

Page 16: ... CH4 OUTA CH4 OUTB CH4 INA CH4 INB BIAS IN Vcc Vcc CH3 INB CH3 INA CH3 OUTB CH3 OUTA OP IN OP IN CH1 OUTA CH1 OUTB CH1 INA CH1 INB Tr B Vreg OUT MUTE GND CH2 INB CH2 INA CH2 OUTB CH2 OUTA GND OP OUT 20 19 18 17 16 15 21 BA 6398 FB R OUT MAIN DAC SUB DAC SUB DAC MAIN DAC L OUT GND VDD CLK SI LRCK 6 7 5 8 4 3 1 TIMING GENERATOR SHIFT REGISTER LATCH µPD 6379 REF 2 8 7 5 6 Control Logic 4 3 9 2 10 1 F...

Page 17: ... Ersatzteilliste Exploded Views and Spare Parts List Explosionszeichnungen und Ersatzteilliste Exploded Views and Spare Parts List 3 2 3 1 GRUNDIG Service GRUNDIG Service Explosionszeichnungen und Ersatzteilliste Exploded Views and Spare Parts List ...

Page 18: ...teilliste Exploded Views and Spare Parts List GRUNDIG Service K RCD 500 3 3 Explosionszeichnungen und Ersatzteilliste Exploded Views and Spare Parts List GRUNDIG Service Cassettenlaufwerk Cassette Drive Mechanism CD Laufwerk CD Drive Mechanism 2 3 ...

Page 19: ...1 75954 035 27 TUER CD R DOOR CD R 036 000 1 75954 035 28 LINSE TUER CD L LENS DOOR CD L 037 000 1 75954 035 29 LINSE TUER CD R LENS DOOR CD R 038 000 1 75954 035 55 METALLRING METAL RING 039 000 1 75954 035 21 MAGNET MAGNET 040 000 1 75954 035 49 HALTER HOLDER 041 000 1 75954 035 60 ANDRUCKPLATTE PRESSURE PLATE 042 000 1 75954 035 51 FEDER EJEKT TUER CD L SPRING EJECT DOOR CD L 043 000 1 75954 03...

Page 20: ... SENSOR 053 000 2 75987 544 47 2 MOTOR SCHRAUBE MOTOR SCREV 054 000 2 75954 035 13 MOTOR PULLY MOTOR PULLEY 055 000 2 75954 035 09 HAUPTRIEMEN MAIN DRIVE BELT 056 000 2 75987 544 48 SCHRAUBE SCREW 060 000 2 75987 467 84 AUFNAHMESPERRE RECORD LOCK 062 000 2 75954 035 10 A W KOPF R P HEAD 063 000 2 75954 035 11 LOESCHKOPF ERASE HEAD 064 000 2 75954 035 12 MOTOR EG530AD 2B MOTOR EG530AD 2B 070 000 2 ...

Page 21: ...BA 6398 FP IC 6 75954 035 66 IC UPD 6379AGR IC 8 S75987 425 97 IC ICPN 10 IC 101 75954 035 68 IC TMP 470820DF NA34 Z IC 201 75987 456 62 IC LA 1186 N IC 202 75987 512 73 IC BA 3308 IC 301 75987 512 73 IC BA 3308 IC 401 75952 500 24 IC TA 8227 P IC 501 S75987 425 97 IC ICPN 10 L 1 75954 035 75 SPULE IND 100UH L 2 75954 035 75 SPULE IND 100UH L 201 75954 035 74 SPULE 4T 4 5MM L 203 75954 035 74 SPUL...

Page 22: ...w Amstelveste Joan Muyskenweg 22 CJ Amsterdam 00 31 20 5 68 15 68 GRUNDIG ITALIANA S P A Via Brennero 364 Trento 00 39 461 82 20 55 GRUNDIG SVENSKA AB Albygatan 109 d Box 4050 Solna 00 46 8 6 29 85 30 GRUNDIG DANMARK A S Lejrvej 19 Værløse 00 45 42 48 68 22 SF 02271 GRUNDIG NORGE A S Glynitveien 25 Postboks 234 Ski 00 47 64 87 82 00 GRUNDIG BELUX N V Deltapark Unit 3 Weihoek 3 Zaventem 00 32 2 7 1...

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