MCD 36 / MCD 40
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
MCD 36 / MCD 40
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
GRUNDIG Service
GRUNDIG Service
26
SYSTEM
CONTROL
RAM STACK
(512W)
RAM
(12K/16IK)
TIMER
0
TIMER
1
INTERRUPT
CONTROL
FLAG
C
SP
PC
PC
PB
PA
P0
P1
P2
P3
P4
P5
P6
P7
P8
P9
ALU
PD
PE
PRESCALER
MPX
MPX
MPX
SERIAL I/O 0
SERIAL I/O 1
E
M
R
D D
P P
H L
D D
P P
X Y
Z
E A
22
24
25
64
46
47
42
43
44
62
57
58
59
60
61
21
27
~
29
9
10
11
12
63
45
38
~
41
34
~
37
30
~
33
48~51 52~55 57~60 61~64
1~4
5~8
9~12
13~16 17~20
21,27~29
LC66566B-4K60
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Initial setting input terminal for changer 1 or 2 switching
Play mode output H:play mode
Load/spindle motor switching signal output
No connection
No connection
No connection
No connection
No connection
Disc clamp finish SW input
Elevator upper limit SW input
Elevator lower limit SW input
Magazine detection SW input
CD mode signal output
No connection
Status data output
No connection
No connection
No connection
No connection
No connection
Command data input
Connection to ground
Ground
Ceramic oscillator connection terminal for system clock
Ceramic oscillator connection terminal for system clock
Reset signal input
Battery LOW detection input
No connection
No connection
Main & servo system power supply ON/OFF output
No connection
No connection
No connection
Pickup moving-inside signal output
Pickup moving-outside signal output
Output to move a tray in the direction out of magazine with loading motor
Output to move a tray in the direction into magazine with loading motor
No connection
No connection
Reference voltage for TH1
Reference voltage for TH2
Temperature sensor ON signal input
Temperature sensor OFF signal input
Acc ON/OFF detection signal input
Disc detection photo transistor signal input
Magazine eject key signal input
Focus OK signal input
No connection
Elevator position detection pulse input
Initial setting input terminal for 6 discs changer or 10 discs changer
Mute signal output
Reset signal for DSP(LC78622E)
Magazine tray detection SW input
Inner circle limit detection SW input
No connection
Power supply (+5V)
Interface with DSP(LC78622E)
Interface with DSP(LC78622E)
Interface with DSP(LC78622E)
Interface with DSP(LC78622E)
Elevator moving-down signal output
Interface with DSP(LC78622E)
Elevator moving-up signal output
Stand by position cancellation signal input
MODE
PLAY
LD/SP
NC
NC
NC
NC
NC
CLAMPSW
UPLIMIT
LOWLIMIT
MAGZSW
CD+B
NC
DATAOUT
NC
NC
NC
NC
NC
DATAIN
TEST
VSS
OSC1
OSC2
RESET
BATT
NC
NC
POWER
NC
NC
NC
FEM-
FEM+
LOAD+
LOAD-
NC
NC
VREF0
VREF1
TH1
TH2
ACC
DISCON
EJECT
DRF
NC
DISCCOUNT
6/10CD
MUTE
DSPRST
LOADOUT
INSIDESW
NC
VDD
SQOUT
COIN
CQCK
WRQ
ELV-
RWC
ELV+
STBY
I
O
O
O
O
O
O
O
I
I
I
I
O
O
O
O
O
O
O
O
I
I
I
I
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
O
I
I
O
O
I
I
O
I
O
O
I
O
O
O
I
PIN
I/O
DESCRIPTION
PORT NAME
LC 66566 B-4K60
IC-PST9138N
CO1
+
–
–
+
1
3
2
4
5
OP1
Vcc
V OUT
SUB
GND
NC
28
27
26
25
24
23
22
1
2
3
4
5
6
7
21
Vcc
Vcc
Vcc
MUTE
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
20
19
18
17
16
15
8
9
10
11
12
13
14
BA5941FP
10k
10k
10k
10k
13.3k
13.3k
13.3k
13.3k
2 - 13
2 - 14
