Grundig M 7-C Service Anleitung Seite 42

Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
Schaltplan CD-Wechsler / Circuit Diagram CD Changer (CDC Board)
1 2 3 4
1805 10 -
+10V
A
2876
1805 12 - 470u/16V
POWER SUPPLY +5V +5
3870
1805 11 -
GND
1805 1 -
OE_LATCH
B
3896
3888 3871
1805 8 -
STR_OUTP
C
to 1806 CDC Interface
page 3 - 28 1805 7 -
SHR_CL
D
CPU
1805 3 - +5 +5
GND
3872 3877 3874
E
SWITCH_INFO 1805 9 -
1805 4 -
SILD
F
-
1805 5
DATA
-
1805 6
SICL
G
CDM12.1
DISC DRIVE
1800 - 9 3800
D2
120k
H
3802
1800 - 10
D3
120k
3804
1800 - 12
D4
I 56k
J
1800 11 -
D5
1800 - 8
D1
K
47p 47p 100p
2812 2813 2814
+5
18p
2815
L
1800 - 7
+5C
2816
47u/10V
7801
M
BF240
3810
1k
1800 - 5
GND
3891 3811
15k 15k
3812
N
330k
3813
47k
ALPC
1800 - 6
LDON
O
1 2 3 4
3 - 31
M 7-C / M 17-C / M 27-C
5 6 7 8 9
10V
+10
3887
LOADER CONTROL
5.1V
2872
100n
7872
6875
BZX79C5V1
HEF4094BT
16
15
EN3 VCC
1
C2
SRG8
3
C1/
2
4
1D 2D 3
5
6
INNER SWITCH
6874
7
1N4148
14
1881
6872
13
1N4148
12 CDM SWITCH
1880
11
6871
9
1N4148
O/C SWITCH
10
GND 1882
6873
8
1N4148 CAR SWITCH
3878
3875 3876
+5 10k 220k
7874
BC548
3894
5V
+5
3R3
2826
3801
SAA7378
10k
2800 2801
180p 220p
3803
10k 3827
2802 2803 390k
180p 220p
3805
10k
2804 2805
330p 220p
3806
2825
10k
2806
100n
2822 3825
220p
2k2
2n2 2823
3807
10k
2807 2808
1n5 220p 2824
22n
1
3808
10k HF-OUT
2810 2811
560p 220p eyepattern
2.5V
0,5us/DIV
2850
>800mVpp
1n
3897
HF AMPLIFIER
3814 3815 3816 3823
2821
22n
7805
7803 7804
BC548
BC558 BC548
3820 3892 3822 3893 3829
330E 100E 330E 100E 100R
7802
BC548 3824
2819 2820
3817 330p 180p
2817
180p
3821
3818
2818
3819
47u/10V
CPU
5 6 7 8 9
GRUNDIG Service
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
10 11 12 13 14
+10
3851
10V
3R3
7871 -2A
2873
TDA7073A
100n
5
1877
3879
16
10k 2 1
5V
3880
2874
22n
1
3881 1878
13
10k 1
3882
5V CARROUSEL MOTOR
14
7871 -2B
TDA7073A
3883 1875
9
100k 1
6
5V
3884
2829 2875
10u/10V 22n
7
1876
3885
12
100k 1
3886 5V TRAY MOTOR
10
DECODER
3890
470R
3873
470R
3889
470R
2827 2828
100n 100n
47u/10V
7800
VSSA1 VDDA1 VDDA2 VSSA2 VDD1P VDD2P
VSS1 VSS2 VSS3
3 D1
MICROPROCESSOR
4 D2 OUTPUT
INTERFACE
STAGE
5 D3 &
CONTROL
7 D4
ADC
10 IREFT
6 VRL
8 R1 SUBCODE
PROCESSOR
9 R2
PEAK
DETECT
DIGITAL
PLL
11 VRH VREF
GEN SERIAL
EFM DATA
3826
14 ISLICE
AUDIO
DEMOD INTERFACE
PROCESSOR
15 HFIN
FRONT
17 HFREF
END
47p
18 IREF
ERROR
SRAM CORRECTOR
FLAGS
RAM
ADDRESSER
58 STATUS
EBU
DECODER
INTERFACE
MICRO
PROCESSOR
INTERFACE
57 RESET
+5A
13 SELPLL
VERSATILE MOTOR
TIMING TEST KILL
50 CL4
INTERFACE CONTROL
VSS4
3830
1M
1810
+5 +5
8.46MHz
1 3
7809
BC328
2
2848
47u/10V
10 11 12 13 14
3 - 32
15 16 17 18 19
SERVO DRIVERS
5
3839
150k
6
3840
150k
4
3842
10k
2841
1n2
+5
3
3845
3895
10k
2844
5V
1n2
2831
2832
100n
47u/10V
+5A
2
3848 3849
8k2 8k2
2846
+5A
VDD3C
22n
RA 26
27 3837
FO
SL 28
LDON 64
SBSY 35
2835
3838
2836
36
SFSY
100n 47u/10V
SUB 38
RCK 37
SCLK 48
WCLK 46
DATA 45
MISC 44
3832
470u/10V
CFLG 61
GNDA
C2FAIL 60
DOBM 31
LEFT I/O
NC1 55
MOT2 34
1 BCK
CONTROL
MOT1 33
2 WS
AND
3
DATA
TIMING
VSSA3
RIGHT I/O
+5
3835
3834 Component numbers:
3836
7808
Servo-decoder:
BC548
Audio-part
Interface + Loader
15 16 17 18 19
M 7-C / M 17-C / M 27-C
20 21 22
+10
3852
3R3
7807 -2A
10V
2837
TDA7073
100n 5
16 5
1
0.25V 2
2838
100n 2840
3841
100n
1
13 5
0.25V
1
2839
100n
14
7806 -2A
TDA7073A
9 5
3843
2.5V 6 1
8k2
2842
3844
10N
7
12 5
2.5V
1
+10
10
3853
3R3
7806 -2B
10V
2843 TDA7073
5
100n
16 5
3846
1
2.5V 2
8k2
2845
3847
10n
1
13 5
2.5V
1
14
7807 -2B
TDA7073A
9 5
1
2.5V 6
3850 2847 2809
100n 100n
7
12 5
2.5V
1
10
+5
3869
4.4V
DAC AUDIO
2851 2852
100n
7851
TDA1311
GNDA
5
VDD
2860
6
VOL
I/V
10u
2861
8
VOR
I/V
10u
GND
4
GNDA
2855
100n
2856 GNDA
x800 -> x850
100n
x851 -> x870
2830 GNDA
x871 -> x899
100n
GNDA
20 21 22
GRUNDIG Service