GRUNDIG Service
3 - 1
K-RCD 110
Schaltpläne und Platinenabbildungen / Circuit Diagrams and Layout of PCBs
GRUNDIG Service
3 - 2
K-RCD 110
Schaltpläne und Platinenabbildungen / Circuit Diagrams and Layout of PCBs
Schaltbild / Circuit Diagram
CD
TRANSISTOR VOLTAGES
TRANSISTOR
PIN E
PIN B
PIN C
Q301
1936
0V
4.8V
4V
Q302
1936
0V
4.8V
4V
Q303
3330
0V
0V
0V
Q304
3330
0V
0V
0V
Q305
1346
4.8V
0V
4.8V
Q306
3400
0V
0V
4.5V
Q307
1713
8V
2V
7.5V
Q308
1346
4V
4.8V
4V
Q309
1346
4V
4.8V
4V
CN302
VOLTAGES IC 307/308 LA 6531
PIN 1
2
3
4
5
6
7
8
V
8.5
0
4
0
0
4
4
4
PIN 9
10
11
12
13
14
15
16
V
4
4
4
0
0
4
4
4
IC307
LA 6531
IC308
LA 6531
SLED MOTOR
TRACK
LASER
2
TO AUDIO BOARD
CN301
PAGE 3-4
–>
RF
T-OFF
IC304
LC 78815M
IC302
LC7861NE
VOLTAGES IC 305 LA 6458S
PIN 1
2
3
4
5
6
7
8
9
V
8.5
4
4
2.5
0
0
4
0
0
VOLTAGES IC 306 L78M05T
PIN
1
2
3
VOLT
7
0
5
VOLTAGES IC 302 LC 7861NE
PIN 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
V
0
0
1.8
3
0
2.2
2.2
2.5
0
0.5
0
0
0
2.5
4.5
0
PIN 17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
V
3.6
1.8
4.6
0
4.6
0
0
4.6
0
0
0
0
0
0
1
1
PIN 33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
V
2.4
0
2.6
2.6
1.5
2.2
2.2
1.5
2.2
0
2.2
0
0
0
2.2
0
PIN 49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
V
2.2
1
0
0
0
4.6
4.6
0
0
2
2.2
0
0
0
0.5
2
VOLTAGES IC 304 LC 78815M
PIN 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
V
2
3.5
4.6
4.6
2.4
0
0
0
0
4.8
0
4.8
0
4.8
0
0
0
0
0
2
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
V
0
0
4
4
4
4
4
4
4
2
2.4
2.4
4
4
4
1.8
3.5
4
4
4
4.2
4
4
3.5
V
0
4
2.2
1.8
4
4
4
0
4
4
4
7
4.5
0
0
0
PIN
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
PIN
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
PIN
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
V
0
2.8
2
4
2.5
5
0
3.5
1.5
7
0.5
3.5
7
1.5
1.5
0
IC301 LA 9210M
V
4.5
0
0
0
4.5
0
4
0
4
0
0
0.5
2.5
2
2
4.5
2.5
2.5
2.5
3.5
2.5
2.5
0
0
1
3
FOCUS
SPINDLE MOTOR
LIMIT
SW
Q304
3330U
Q306
C3400
PCK
D-GND
Q307
A1317
IC305 LA 6458S
Q303
3330U
Q301
D1936
Q302
D1936
Q305
A1346
VDD
5V
OPTICAL
PICK UP
IC306
L78M05T
E-F BALANCE
V-REF
Q309
A1346
Q308
A1346
1
2
3
4
5
6
7
8
CN
SYN
CN10
T
O
CD BOARD
CN302
<–
FROM AUDIO BOARD
CN SYN (PAGE 3-4)
SKIP-REW
SKIP-F
PROG
REP
STOP
PLAY/PAUSE
DISPLAY BOARD
K1
K2
K3
K4
SEG1
SEG2
SEG3
SEG4
1 2
SW12
SW11
SW10
SW7
SW8
SW9
CD CONTROL
DGND
7V
AGND
RCH
AGND
LCH
CN301
TEAO
VOLTAGES IC 303 LC 708031A
PIN 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
V
2.2 2.2
1.8
3.5
4.5
2
0
0
4.5
1.8
1.2
1.2
0
1.5
0
2.5
4.5
0
1.8
0
PIN 21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
V
1.5
3
0
4.5
0
2.2
2.5
0
1.8
4.2
4.2
4.2
4.2
4.2
0
4.5
0
4.5
0
0
PIN 41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
V
0
0
0
0
0
0
0
0
0
0
0
0
4.5
0
0
2.5
2.5
2.2
2.2
2.2
PIN 61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
V
2.2 2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
3 - 5
3 - 6
