Grundig M 28-C Servicehandbuch Seite 56

Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
Blockschaltplan CD-Wechsler CDC 3 MG / Block Diagram CD Changer CDC 3 MG
CDC 3 DH bei allen Geräte bis Ser.-Nr. 001047
CDC 3 MG bei allen Geräte ab Ser.-Nr. 001048
CDC 3 DH at all sets until serial no. 001047
CDC 3 MG at all sets from serial no. 001048 onwards
CD MECHANISM PHOTODIODE & HF AMPLIFIER - LOADER CONTROL PCB
DISC
7806
TDA7073A
TURNTABLE FOCB+
MOTOR
FOCUS 27
FO
MOTOR FOCB-
RADB+
RADIAL 26
RA
MOTOR RADB-
7807
TDA7073A
SERVO - DECODER
SLEDGEB+
SLEDGE
28
SL
MOTOR SLEDGEB-
TTM-
33
MOT1
TURNTABLE
MOTOR TTM+
34
MOT2
+5V
LASER
7808-7809
POWER
CONTROL
64
LD ON
PHOTO
DIODES
D1
D4 D1-D5
D2
D1 D5 D3
D2 D3 D4
7801 R1,R2
HF 1)
15
AMPLIFIER HF IN
D2-D4 74HCU04D
INNER SWITCH
14
O4
SWITCH INFO
1880
12
O6
CD POS. SWITCH
1881
13
O5
TRAY SWITCH
1882 SHIFT
REGISTER
11
O7
HEF4094BT
CARROUSEL SWITCH
7871
TDA7073A
4
OO
CARROUSEL
MOTOR
5
O1
6
O2
TRAY MOTOR
7
O3
4 - 37
M 18-C ... M 48-DC
+10V
+5V
7800 7851
DAC
TDA1311
8
Vout R
BCK
WS
DATA 6
Vout L
CD7
SAA7378
57
PORE
54
SILD
52
SCL
7874
51
SDA
7875
+4V
VCC +5V
2,19,30,47,59
7873
15
DATA
15
EN1
OE_LATCH
1
STB
3
SHR_CL
16
+10V
VCC
SWITCH INFO
5V1
GRUNDIG Service
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
Verdrahtungsplan CD-Wechsler CDC 3 MG / Wiring Diagram CD Changer CDC 3 MG
1 = OE_LATCH
2 = PORE
3 = GND
4 = SILD
5 = DATA
1805
10
6 = SICL
7 = SHR_CL
12
8 = STR_OUT
9 = SWICH INFO
10 = +10V
11 = GND
12 = +5V
13 = CD RIGHT
13
14 = GNDA
CD RIGHT
15 = CD LEFT
15
CD LEFT
1805
2
FLEX - FOIL
PORE
4
SILD
2
6
SCL
1 1806 23
CONNECTOR BOARD
5
9 1 6 1
DATA
1874 1873 1808 1860
Interface CD-Wechsler CDC 3 MG / Interface CD Changer CDC 3 MG
1806
1
2
1
3
8
4
STR-OUTP
7 5
SHR_CL
6
7
8
9
10
11
9
12
13
14
15
To 1805 CDC
page 4-42
4 - 38
CD - MAIN BOARD
1801
1 = TRACK-
1 = SLIDE MOTOR -
2 = FOCUS -
2 = SLIDE MOTOR +
3 = FOCUS +
3 = DISC MOTOR -
4 = TRACK +
1800
4 = DISC MOTOR +
5 = LASER (cathode)
5 = INNER SWITCH
6 = LASER (anode)
6 = INNER SWITCH
7 = DIODE ARRAY (common cathode)
8 = D1
9 = D2
10 = D3
11 = D5
12 = D4
5 BLUE
6 WHITE
9
8
7
6
5
4
3
2
1
1874
To 23 Front
page 4-14
page 4-20
To 53 AF
page 4-45
page 4-49
6
5
4
3
2
1
1873
M 18-C ... M 48-DC
4 YELLOW
3 GREEN
GRUNDIG Service