1 - 2
GRUNDIG Service
Allgemeiner Teil / General Section
RR 740 CD / RR 770 CD
Table of Contents
Page
General Section ............................ 1 - 2 … 1 -
12
Measuring Instruments/Equipment ............................................ 1 - 2
Service Hints .............................................................................. 1 - 3
Technical Data ........................................................................... 1 - 3
Operating Hints .......................................................................... 1 - 6
Disassembly Instructions ........................................................... 1 - 8
Adjustment Procedures .................. 2 - 4 ... 2 - 6
Layout of the PCBs
and Circuit Diagrams ................... 3 - 1 … 3 - 26
IC Block Diagrams ..................................................................... 3 - 1
Wiring Diagram .......................................................................... 3 - 3
Circuit Diagrams:
CPU Board, Key Board – RR 740 CD .................................... 3 - 5
CPU Board, Key Board – RR 770 CD .................................... 3 - 9
Amplifier Board, Rectifier Board,
Headphone Board – RR 740 CD .......................................... 3 - 11
Amplifier Board, Rectifier Board,
Headphone Board – RR 770 CD .......................................... 3 - 15
Function Board – RR 740 CD .............................................. 3 - 17
Function Board – RR 770 CD .............................................. 3 - 19
Tuner Board, DSC Switch Board,
Stereo/Mono Switch Board – RR 740 CD / RR 770 CD ............. 3 - 21
CD Servo Board, CD LED Board – RR 740 CD / RR 770 CD .... 3 - 25
CPU Board, Key Board – RR 740 CD ................................... 3 - 7
CPU Board, Key Board – RR 770 CD ................................... 3 - 8
Amplifier Board, Headphone Board,
Rectifier Board – RR 740 CD .................................................. 3 - 13
Amplifier Board, Headphone Board,
Rectifier Board – RR 770 CD .................................................. 3 - 14
Function Board – RR 740 CD .............................................. 3 - 18
Function Board – RR 770 CD .............................................. 3 - 20
Tuner Board – RR 740 CD / RR 770 CD ................................... 3 - 23
Stereo/Mono Switch Board – RR 740 CD / RR 770 CD ............. 3 - 23
CD LED Board – RR 740 CD / RR 770 CD .............................. 3 - 23
DSC Switch Board – RR 740 CD / RR 770 CD ......................... 3 - 23
CD Servo Board– RR 740 CD / RR 770 CD ............................. 3 - 24
Exploded Views and
Spare Parts Lists ............................ 4 - 1 … 4 - 6
Inhaltsverzeichnis
Seite
Allgemeiner Teil ........................... 1 - 2 … 1 - 12
Messgeräte/Messmittel .............................................................. 1 - 2
Service-Hinweise ....................................................................... 1 - 3
Technische Daten ...................................................................... 1 - 3
Bedienhinweise .......................................................................... 1 - 4
Ausbauhinweise ......................................................................... 1 - 8
Abgleichvorschriften ...................... 2 - 1 ... 2 - 3
Platinenabbildungen
und Schaltpläne ........................... 3 - 1 … 3 - 26
IC-Blockdiagramme ................................................................... 3 - 1
Verdrahtungsplan ....................................................................... 3 - 3
Schaltpläne:
CPU-Platte, Tastenplatte – RR 740 CD ................................. 3 - 5
CPU-Platte, Tastenplatte – RR 770 CD ................................. 3 - 9
Verstärkerplatte, Gleichrichterplatte,
Kopfhörerplatte – RR 740 CD .............................................. 3 - 11
Verstärkerplatte, Gleichrichterplatte,
Kopfhörerplatte – RR 770 CD .............................................. 3 - 15
Funktionsplatte – RR 740 CD .............................................. 3 - 17
Funktionsplatte – RR 770 CD .............................................. 3 - 19
Tuner-Platte, DSC-Schalterplatte,
Stereo/Mono-Schalter-Platte – RR 740 CD / RR 770 CD .......... 3 - 21
CD-Servo-Platte, CD-LED-Platte – RR 740 CD / RR 770 CD .... 3 - 25
CPU-Platte,Tastenplatte – RR 740 CD ................................. 3 - 7
CPU-Platte,Tastenplatte – RR 770 CD ................................. 3 - 8
Verstärkerplatte, Kopfhörerplatte,
Gleichrichterplatte – RR 740 CD ............................................ 3 - 13
Verstärkerplatte, Kopfhörerplatte,
Gleichrichterplatte – RR 770 CD ............................................ 3 - 14
Funktionsplatte – RR 740 CD .............................................. 3 - 18
Funktionsplatte – RR 770 CD .............................................. 3 - 20
Tuner-Platte – RR 740 CD / RR 770 CD .................................. 3 - 23
Stereo/Mono-Schalter-Platte – RR 740 CD / RR 770 CD .......... 3 - 23
CD-LED-Platte – RR 740 CD / RR 770 CD .............................. 3 - 23
DSC-Schalterplatte – RR 740 CD / RR 770 CD ........................ 3 - 23
CD-Servo-Platte – RR 740 CD / RR 770 CD ............................ 3 - 24
Explosionszeichnungen und
Ersatzteillisten ................................ 4 - 1 … 4 - 6
Allgemeiner Teil
Messgeräte/Messmittel
Frequenzzähler, NF-Voltmeter, Tonhöhenschwankungsmesser,
Messsender, Wobbelsender, Oszilloskop, Digitalvoltmeter, FE-
Testcassette 3150Hz/8000Hz, Test-CD (z.B. 5A)
Beachten Sie bitte das GRUNDIG Messtechnik-Programm, das Sie
unter folgender Adresse erhalten:
General Section
Measuring Instruments/Equipment
Frequency counter, AF voltmeter, Wow and flutter meter, Signal
generator, Sweep generator, Oscilloscope, Digital voltmeter, FE Test
cassette 3150Hz/8000Hz, Test CD (e.g. 5A)
Please note the GRUNDIG Catalog "Test and Measuring Equipment"
obtainable from:
GRUNDIG Instruments Test- und Messsysteme GmbH
Würzburger Str. 150, D 90766 Fürth/Bay
Tel. 0911/703-4118, Fax 0911/703-4130
eMail: [email protected], Internet: http://www.grundig-instruments.de