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Allgemeiner T

eil / General Section

EC 4790 CD

1 - 10

GRUNDIG

Service

EXPERT control level

Possible settings 

1

§W

1

Activating coding (for details, see the
chapter ”Coding”, page 16).

If ”

CODE

” appears in the display, coding is

not activated.
If ”

SAFE

” appears in the display, coding is

activated.

2

Display brigthness

DISPL  07

” (00 … 07). Set according to the

location of the car radio so that
the display can optimally be read
off.

66

If you havec connected the car radio to 
the illumination contact of the vehicle’s
plug connector, the display brightness will
change if the headlights of the vehicle are
switched on (night setting) or off (day 
setting). Both settings can separately be
selected and stored in memory with 
switched on or switched off headlights.

3

Security LED (on/off)

BLK ON

” The Security LED flashes if 

the radio and the ignition are
switched off.

BLK OFF

” The Security LED does not

flash.

4

Sound signal (on/off)

BEEP ON

” Sound signal as function con-

firmation.

BEEP OFF

” Function confirmation

through brief muting of the
loudspeaker outputs.

5

Autom. LEARN (radio mode)

If you are in a reception area in which
reception of RDS programmes with traffic
announcements is poor, you can disable
the autom. LEARN function in radio mode.

LRN    ON

”: autom. LEARN 

LRN  OFF

”: no autom. LEARN wished.

66

If the volume is set below ”

VOL 4

”, the

LRN    ON

” setting is supposed.

6

Autom. change of regional programme

If an RDS programme consists of various
regional programmes, it may occur that
your car radio changes between regional
stations when changing the reception area.

REG    ON

” autom. change of regional 

programme is possible.

REG  OFF

” no change of regional 

programme is possible.

7

Switching on and off with the 
ignition/start switch

IGN   ON

” It is possible to switch the radio

on and off with the ignition/start
switch of the vehicle.

IGN  OFF

” Switching on and off is only 

possible with the  

¡

IO      

button.

8

Muting in telephone mode

PHONE  ON

” Muting activated.

PHONE  OFF

” Muting deactivated.

9

MCD and AUX input sensitivity

to adjust the sensitivity to a CD changer.

MCD    LOW

” low

MCD    MID

” medium 

(eg. MCD 36/MCD 40)

MCD  HIGH

” high

§I

Volume limitation when switching on

ONVOL  - -

”: no limitation 

ONVOL  20

”:  max. volume, eg., 20 

(- - … 46). 

The volume is limited only if the volume
when the car radio is switched off is 
greater than the set value!

§?

Minimum volume for traffic 
announcements

TA VOL  16

” (5 … 46)

The volume for the traffic announcement
can be heard during setting.

§`

CLOCK ON/OFF

CLOCK  ON

”  Time indication on.

CLOCK  OFF

”  Time indication off.

§Q

Clock synchronization

sync  ON

The built-in clock is
synchronized by RDS 
signals.

sync  OFF

”  In areas where no RDS

TIMER signals are received,
the synchronization func-
tion can be deactivated.

§W

DIGITIME

TM   00:00

”  This function serves for

manual time setting. If you
turn the right-hand control
knob quickly, it will act as a
flywheel.

66

If ”

sync  ON

” has been selected (see 

§Q

),

the manually set time may be corrected 
by the currently received RDS station.
If this RDS station should transmit an
undesired time, you must disable this 
correction by selecting ”

sync  OFF

”.

EXPERT control level

Deactivating coding

before removing the car radio, for example.

1. The EXPERT mode must be switched on

and ”

SAFE

” indicated in the display.

Activate the change mode:

Briefly press the right-hand 

¢

¢

control

knob. The display indicates ”

CH 1 - - - -

” 

(CH = Change).

2. Enter the code number (on the Identity

Card) by turning the right-hand 

¢

¢

control

knob as described under ”Activating
Coding” 

3. Confirm the code number:

Press the right-hand 

¢

¢

control knob until

CODE

” appears briefly in the display.

The radio will play after approximately 
3 seconds.

Coding is deactivated!
If you have entered the incorrect code 
number:
"

SAFE

" remains in the display and the radio

does not play.

Begin again. Be sure to observe the waiting
periods between attempts (see page 17).

66

Your personal code number is on the iden-
tity card of your car radio.
Coding is not activated when the radio lea-
ves the factory.

If you have “activated” your car radio's
coding: As soon as you disconnect the car
radio from the car battery (or permanent
plus terminal 30), it is electronically
blocked. 
Only you are able to put it back into opera-
tion by entering your personal Code Number.

Is the coding activated?

Activate the EXPERT mode and turn the 
left-hand 

¢

¢

control knob until the display indi-

cates "

SAFE

" or "

CODE

".

Coding activated.

Coding not activated.

Activating the coding

1. Select the EXPERT control level and turn

the right-hand 

¢

¢

control knob until ”

CODE

appears in the display.
Activate the change mode:

Briefly press the right-hand 

¢

¢

control

knob. The display indicates ”

CH - - - -

” 

(CH = Change).

2. Enter the code number (on the Identity

Card): Use the right-hand 

¢

¢

control knob

to enter the correct number.

66

When the right-hand 

¢

¢

control knob is 

turned quickly, it will function like a
flywheel.

3. Confirm the code number:

Briefly press the right-hand 

¢

¢

control knob.

SAFE

” appears in the display.

Coding is activated!

4. Deactivate the EXPERT control level:

Press the 

¡

button or the right-hand

¢

¢

control knob until the sig-

nal sounds.

Coding

The table shows the waiting periods between
the individual attempts.
Waiting period after the 7th attempt is always
24 hrs!
After the 6th attempt we recommend having a
dealer complete the “Return to operation” or
“Deactivate coding” process.

Return to operation

With coding activated, the car radio is electro-
nically disabled after it has been disconnected
from the car battery (or permanent plus, ter-
minal 30), e.g. after the radio has been remo-
ved during servicing.

1. Switch on the car radio.

The display indicates ”

SAFE

”.

After approx. 3 seconds, the display indi-
cates ”

I - - - -

”. (The ”

I

” stands for the

number of attempts).

2. Enter the code number (on Identity Card),

by turning the right-hand 

¢

¢

control knob 

as described in the chapter ”Activating
coding”.

3. Confirm the code number:

Press the right-hand 

¢

¢

control knob until

SAFE

” appears briefly in the display.

After approximately 3 seconds the radio
will play.

If you have entered the incorrect code 
number:
"

SAFE

" remains in the display and the radio

does not play.
Begin again. Be sure to observe the waiting
periods between attempts.

Coding

Waiting periods

To prevent deactivation of the coding being
possible by trial and error, waiting periods are
required between attempts. During these wait-
ing periods, the car radio can be switched on
and off but will not play.

During the waiting period 
the car radio needs not be switched on, but 
it must be connected to the per12 V
voltage. As long as the display indicates
"

SAFE

", the waiting period has not yet elapsed.

The waiting period is over when the number
of the next attempt is visible in the display,
e.g. "

2 - - - -

".

Attempt

Wait.per.

(in display)

(approx.)

1

21 sec.

2

1.5 min.

3

5.5 min.

4

22 min.

5

1.5 hrs.

6

6.0 hrs.

7

24 hrs.

8

24 hrs.

Summary of Contents for EC 4790 CD

Page 1: ...s for the Complete Service Service Manual Grundig Service Hotline Deutschland TV TV SAT VCR LiveCam HiFi Audio Car Audio Telekommunikation Fax Planatron 8 00 22 00Uhr 0180 52318 41 0180 52318 49 0180 52318 48 0180 52318 42 0180 52318 43 0180 52318 44 0180 52318 45 0180 52318 51 0180 52318 99 Mo Fr 8 00 18 00 Uhr 0180 52318 40 0180 52318 50 Telefon Fax Technik Ersatzteil Verkauf Mo Fr 8 00 19 00 Uh...

Page 2: ...Board 3 24 Spare Parts List 4 1 4 2 jInhaltsverzeichnis Seite Allgemeiner Teil 1 2 1 7 Meßgeräte Meßmittel 1 2 Ausbauhinweise 1 3 Bedienhinweise 1 4 Abgleichvorschriften 2 1 2 3 Schaltpläne und Druckplattenabbildungen 3 1 3 24 Schaltpläne Bedien Teil 3 1 CD Teil 3 3 HF Teil 3 4 Prozessor Teil 3 7 NF Teil 3 11 Platinenabbildungen Hauptplatte 3 15 Bedienplatte 3 23 Anschlußplatte 3 24 Ersatzteillist...

Page 3: ... L Fig 1 and 2 screws M Fig 7 Lift the CD Drive and open flexprint connector Fig 1 Ausbauhinweise 1 Entnehmen einer CD bei defektem Laufwerk Deckelblech abnehmen Die 4 Schrauben A Fig 1 herausschrauben und die Abdeckung B hochheben Achtung Kabel C Den CD Deckel D Fig 2 hochheben und die CD herausnehmen Beim Wiederzusammenbau auf die Rastung E Fig 3 achten 2 Frontblende abnehmen Deckel und Bodenble...

Page 4: ...st AF aktiviert AF 2 Stellen Sie einen Sender RDS Programm UKW ein z B durch Abruf eines LEARN Speichers 6 6Ist der eingestellte Sender RDS Programm bereits auf einem Speicherplatz abgelegt wird die jeweilige Ziffer im Anzeigefeld dar gestellt 3 Eingestellten Sender RDS Programm speichern Taste kurz drücken Das Zeichen STORE im Anzeigefeld ist zu sehen Stellen Sie mit dem rechten Drehgeber den gew...

Page 5: ...N Zufalls Titelsuche beenden Drücken Sie den rechten Drehgeber länger im Anzeigefeld erscheint RND OFF Diese Funktion wird beim Ausschalten auto matisch zurückgesetzt CD Wechsler Betrieb beenden Drücken Sie kurz die Taste und wählen Sie eine andere Programmquelle DAT Betrieb 6 6Diese Funktionen können Sie nur aus führen wenn Sie einen geeigneten CD Wechsler angeschlossen haben Bitte beachten Sie a...

Page 6: ...ingeschaltet und SAFE erscheint im Anzeigefeld Aktivieren Sie die Einstellung Drücken Sie den rechten Drehgeber kurz Im Anzeige feld erscheint CH 1 CH Change ändern 2 Code Nr siehe Identity Card wie im Kapitel Codierung aktivieren beschrieben durch Drehen des rechten Drehgebers eingeben 3 Code Nr bestätigen Rechten Drehgeber drücken bis im Anzeigefeld vorübergehend CODE erscheint Nach ca 3 Sekunde...

Page 7: ...C17 C6 und A5 darf zusammen 0 5 A nicht übersteigen Ein und Ausbau CD Entfernen Sie bei ausgeschaltetem Radio eine ausgeschobene CD um eine Verletzung durch die CD bei plötzlichem Bremsen oder einem Unfall zu vermeiden Befestigen Sie das Radio sicher im Einbau schacht damit Sie auch bei schlechter Weg strecke CD Musik in hoher Qualität genießen können Radio Empfangsbedingungen UKW Empfang Während ...

Page 8: ...ogramme FM for example by calling up a LEARN memory position 6 6If the selected station RDS programme is already stored in a memory position the display will indicate its number 3 Store the selected station RDS programme Briefly press the button The STORE sign is shown in the display Select the desired memory position Preset number 1 to 48 by turning the right hand control knob Confirm this by pre...

Page 9: ...right hand control knob until RND OFF appears in the display When switching the radio off this function will automatically be reset Ending CD changer mode Briefly press the button and select another programme source 6 6The following functions are only possible if you have connected a suitable CD changer to your radio Please also observe the ope rating instructions of the CD changer On page 21 you ...

Page 10: ...nob The display indicates CH 1 CH Change 2 Enter the code number on the Identity Card by turning the right hand control knob as described under Activating Coding 3 Confirm the code number Press the right hand control knob until CODE appears briefly in the display The radio will play after approximately 3 seconds Coding is deactivated If you have entered the incorrect code number SAFE remains in th...

Page 11: ...nd Removal CD When the radio is switched off remove an ejected CD to prevent injuries by the CD in the case of sudden braking or accidents Fix the radio securely in its mounting facility to ensure high quality CD play even in the case of bad roads Radio reception conditions VHF FM reception Reception conditions change constantly while you are driving Mountains buildings or bridges can all disturb ...

Page 12: ...eingang Frequenz 87 8MHz fmod 1kHz Hub 22 5kHz E 3µV 10dBµV NF Voltmeter an Lautsprecher Ausgang Meßsender an Antenneneingang Frequenz 93 5MHz fmod 1kHz Hub 22 5kHz E 3µV 10dBµV NF Voltmeter an Lautsprecher Ausgang Meßsender an Antenneneingang Frequenz 93 5MHz keine Modulation E 100µV 40dBµV DC Voltmeter zwischen FMP121 und FMP122 Mit L612A 2 bei 531kHz auf 1 2V 20mV abgleichen Kontrolle bei 1602k...

Page 13: ...ope to FMP115 Connect a Test Generator to aerial input Frequency 87 8MHz fmod 1kHz dev 22 5kHz E 3µV 10dBµV Connect an AF Voltmeter to Loudspeaker Output Connect a Test Generator to aerial input Frequency 93 5MHz fmod 1kHz dev 22 5kHz E 3µV 10dBµV Connect an AF Voltmeter to Loudspeaker Output Connect a Test Generator to aerial input Frequency 93 5MHz no modulation E 100µV 40dBµV Connect DC Voltmet...

Page 14: ...12A 2 L613A 3 L603A 4 L604A 5 F101 8 L04 7 F105 L01 9 L03 0 F601A 1 Q873 Q701 Q883 1 3 CD BUS 4 1 FL RL RL RR RR FR FR FL 4 1 2 3 1 IC1471L 2 3 1 IC1472L Q301 F102 F104 F103 CR105 6 20 11 10 1 CIC101 1 16 9 8 CIC01 1 16 9 8 CIC701 1 16 9 8 CIC601A CIC501 44 1 34 33 22 23 12 11 CIC1501 CBU1471L 80 1 64 65 41 40 25 24 CIC800 1 14 8 7 CIC802 639 122 121 115 24 ...

Page 15: ...02 10N CC1001 G1001 39K CR1021 39K CR1019 CS1004 39K CR1018 39K CR1017 390K CR1061 1N0 CC1011 1N0 CC1008 22N CC1009 22N CC1007 1N0 CC1006 CS1002 CS1001 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CBU1001 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CBU1002 27K CR1056 BC847B CT1001 27K CR1057 22N CC1004 INK2 INK2 G_SIEB G_SIEB 30V 30V T T T TAST TAST TAST LK1 LK1 G1 S14 S13...

Page 16: ...EGATIV ALLE SPANNUNGEN SIND NÄHERUNGSWERTE GEMESSEN BEI UB 14V GEGEN MINUS 13V8 5V0 5V0 D S G BF543 CT606A 10U 16V C603A 1SV172 CD01 BU01 22U 16V C30 BC818 40 CT603A BC848C CT604A BC848C CT607A C606A CC12 3P9 12P CC05 CC10 4P7 8P2 CC07 CC25 100N 15P CC08 CC09 1P0 2P2 CC04 CC20 COG 1N0 8P2 CC06 3P3 CC02 22N CC21 47N CC604A 100N CC609A CC613A CC614A 1N0 COG 1N0 CC22 CC617A 10N CC612A COG 1N0 CC11 10...

Page 17: ... PREAMPLIFIER N DIVIDER R DIVIDER OSCILLATOR LATCH SHIFT REG LATCH INTERFACE I C BUS 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CIC701 U4286BM FB 1 2 4 6 8 CR105 100K FMP636 FMP103 FMP106 FMP113 FMP107 FMP01 FMP658 FMP116 FMP624 FMP111 FMP122 FMP663 FMP108 FMP626 FMP121 FMP672 FMP104 FMP102 FMP618 FMP639 FMP646 MP606 FMP115 7 8 1 3 4 6 F601A 100U 10V C717 100U 10V C707 1MHZ 50khz DEMOD QUADRATUR KOMP ...

Page 18: ...4 FIP6 CIC800 UPD78045 4U7 16V C804 FMP803 FMP802 FMP801 1U0 50V C806 4 3 2 1 8 7 6 5 CIC801 24LC16 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CBU802 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CBU801 100U 6V3 C891 100U 6V3 C808 7 6 5 4 3 2 1 8 9 10 11 12 13 14 GND VDD CIC802 40106 8305 741 106 LH3344 00 D802 220U 6V3 C823 220U 6V3 C802 1K0 CR849 CR821 10K CR819 10K CR81...

Page 19: ...ENZ DECODER DIFFERENTIAL 9 10 11 12 13 14 15 16 8 7 6 5 4 3 2 1 CIC501 8305 826 579 SAA6579T 1U0 50V C2052 1U0 50V C2064 1U0 50V C2301 5 6 7 8 4 3 2 1 CIC2052 L78L05ACD BC368 T2302 BC368 T2301 100U 6V3 C2051 47U 16V C2053 10U 16V C2302 47K CR2051 100K CR2054 3K3 CR2052 47K CR2053 47K CR2056 CR2057 100R 15K CR2070 1K0 CR2066 22K CR2064 27K CR2069 CR503 0R CR2076 100R CR2077 100R 10K CR2061 CR2062 1...

Page 20: ...2 FMP301 FMP201 FMP308 FMP307 FMP1624 FMP1623 FMP1622 FMP1621 FMP1554 FMP1552 FMP1550 FMP1501 FMP1600 FMP1601 FMP1602 FMP1603 FMP1508 CD301 BAV99 BC848C CT301 CSB456_F11 Q301 10U 16V C307 220N 50V C301 PAUSE LEVEL VHCC VSB VR CREF GND VS MPX IN PEAK TBLANK HCR HCL TRR TRL L L R R CSM L R INR INL OUTL OUTR TREBLE R ICD CD L L PHONE GND PHONE IN CDR MUTE FM L FM R DIGGND SDA SCL TBR TBL BEEP AM CD B...

Page 21: ...4V 14V 14V 14V GND GND L RR L RR CD L CD L FR A CD BUS CD R CD GND CD L A A A A U 15 07 99 19373 228 00 HAUPTPLATTE 19373 222 00 ENDSTUFE POWER AMPLIFIER 9V2 4 CONNECTING BOARD ANSCHLUSSPLATTE MAIN BOARD BAUTEILE REFLOWSEITE S KONT S KONT WS VI GN RT BR SW BR OR SW BL GE GN RT II 5 II 6 II 7 II 8 II 3 II 4 II 1 3N9 CC1732 A9 A8 A7 A4 A5 A10 A1 A2 A3 A11 3N9 CC1738 II 2 3N9 CC1707 A13 I 2 I 5 I 4 I...

Page 22: ...54 C2069 20 147 C2071 33 148 C2301 24 114 C2302 19 117 D802 8 154 D2064 35 143 F101 123 31 F102 119 41 F103 120 56 F104 120 49 F105 134 80 F601A 97 38 F602A 91 36 IC1471L 12 28 IC1472L 42 12 IC1601 73 166 IC2001 137 111 L01 132 17 L03 133 29 L04 135 43 L603A 92 16 L604A 101 16 L612A 82 16 L613A 74 16 L2001 111 146 L2060 25 163 Q301 126 84 Q701 91 60 Q873 52 71 Q883 54 58 R1471L 25 13 R1472L 57 13 ...

Page 23: ...069 20 147 C2071 33 148 C2301 24 114 C2302 19 117 D802 8 154 D2064 35 143 F101 123 31 F102 119 41 F103 120 56 F104 120 49 F105 134 80 F601A 97 38 F602A 91 36 IC1471L 12 28 IC1472L 42 12 IC1601 73 166 IC2001 137 111 L01 132 17 L03 133 29 L04 135 43 L603A 92 16 L604A 101 16 L612A 82 16 L613A 74 16 L2001 111 146 L2060 25 163 Q301 126 84 Q701 91 60 Q873 52 71 Q883 54 58 R1471L 25 13 R1472L 57 13 R2010...

Page 24: ...CR854 42 78 CR856 40 86 CR857 37 86 CR858 35 86 CR859 33 86 CR860 39 95 CR861 34 81 CR866 30 86 CR867 27 86 CR868 25 86 CR871 32 101 CR872 27 104 CR873 51 29 CR874 48 29 CR876 48 71 CR877 56 71 CR879 45 66 CR891 14 101 CR1504 89 89 CR1507 93 100 CR1508 96 90 CR1514 119 123 CR1516 115 123 CR1517 121 125 CR1518 130 119 CR1523 99 106 CR1524 100 101 CR1532 102 86 CR1534 107 82 CR1601 95 135 CR1602 91 ...

Page 25: ...CR828 33 53 CR829L 41 62 CR831L 38 57 CR832L 41 54 CR833 44 55 CR841 56 57 CR843 48 62 CR846 36 72 CR847 48 68 CR848 47 71 CR849 36 69 CR851 39 73 CR862 37 86 CR863 35 86 CR869 25 84 CR870 37 113 CR1070 8 164 CR1071 13 148 CR1072 12 124 CR1073 9 124 CR1074 15 154 CR1075 16 148 CR1472L 63 91 CR1473L 45 93 CR1474L 61 108 CR1476L 58 108 CR1477L 66 108 CR1481L 64 108 CR1501 110 114 CR1502 107 114 CR15...

Page 26: ...27 CR1026 CR1023 CR1022 CR1021 CR1019 CR1018 CR1017 CR1061 CT1001 CC1008 Bedienplatte Operating Board Ansicht von der Bestückungsseite View of Component Side 02 00 2B 19373 402 01 2B 00 19373 402 22 1 22 1 G1001 G1051 CS1004 CS1002 TAST C A B R 35 30 25 43 40 15 10 5 2 1 CBU1001 CBU1002 L1003 L1004 L1002 L1001 44 20 CS1001 CS1003 01 425 00 2B 19373 0 1 1 9 3 7 3 4 2 5 0 0 2 L SICHANSL Ansicht von ...

Page 27: ...0 1 18398 103 0000 DREHKNOPF ABNEHMBAR KPL ROTARY KNOB REMOVABLE CPL 0022 000 18313 088 0000 ETUI KPL ETUI CPL 0024 000 18147 035 0000 ANTENNEN ADAPTER ANTENNA ADAPTER 0025 000 18147 036 0000 ADAPTER CLIPS ADAPTER CLIPS 0026 000 18300 099 0100 ANTENNENBUCHSE KPL ANTENNA SOCKET CPL 0027 000 19771 616 1300 ANSCHLUSSGEHAEUSE CONNECTION TERMINAL 0032 000 12037 040 0000 EINBAURAHMEN KPL MOUNTING FRAME ...

Page 28: ... 143 ZK CT 00125 83010 068 4800 SMD TRANS BC 848 C CT 00126 83010 068 4800 SMD TRANS BC 848 C CT 00301 83010 068 4800 SMD TRANS BC 848 C CT 00602 83011 309 9200 SMD TRANS BF 992 A CT 00603 83010 068 1800 SMD TRANS BC 818 40 S8 CT 00604 83010 068 4800 SMD TRANS BC 848 C CT 00606 83011 305 4300 SMD TRANS BF543E7810 SIE CT 00607 83010 068 4800 SMD TRANS BC 848 C CT 00608 83013 701 4300 SMD TRANS DTA ...

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