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Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
IC-Blockschaltpläne / IC Block Diagrams
IC101 CXP83240A (CMOS 8bit 1chip Microcomputer)
45
AN0 to AN7
30~37
8
A/D CONVERTER
54~88
SEG0 to SEG39
40
94~98
COM0 to COM3
50~53
4
LCD
46
VL
CONTROLLER/
VLC1
49
DRIVER
VLC2
48
VLC3
47
PWM
4
14 BIT PWM GENERATOR
RMC
3
REMOCON
CS0
7
SERIAL
SI0
9
INTERFACE
SO0
10
UNIT 0
SCK0
8
SI1
12
SO1
13
SERIAL INTERFACE UNIT 1
SCK1
11
EC0
8 BIT TIMER/COUNTER 0
99
8 BIT TIMER 1
TO
5
16 BIT CAPTURE
CINT
6
TIMER/COUNTER 2
EC1
100
ADJ
5
IC201 M62439SP (Sound Control)
REC OUT 1
1
REC OUT SW
INA1
2
INPUT SW
INB1
3
MONO SW
INC1
4
MUTE
IND1
5
VOLUMR
TONEH1
6
TREBLE
BOOST
TONEL1
7
OUT 1
8
BASS
BOOST
GND
9
CONTROL
VDD
10
IC402 BA7755A (Head Switch)
1
2
HEAD
VCC
SWITCH
3 - 2
44
99
1 2
100
FIFO
FIFO
2 2
2
2
20 REC OUT 2
19
INA2
INB2
18
INC2
17
IND2
16
VOLUMR
TONEH2
15
14
TONEL2
13
OUT 2
12
VSS
CONT
11
LOGIC
3
4
5
CTRL1
GND
CTRL2
93
92
43
42
39
SPC700
CLOCK GEN/
CPU CORE
SYSTEM CONTROL
ROM
RAM
40K BYTES
1120 BYTES
PRESCALER/
32KHz
TIME BASE TIMER
TIMER/COUNTER
IC401 AN7348K (PLAY / REC Pre Amplifier)
24
23
22
21
20
A/Rec
Mute
B
PB Amp(L)
PB Amp(R)
A/Rec
Mute
B
2
4
1
3
5
IC501 TDA7269 (Stereo Amplifier)
MUTE
5
+
7
IN-L
-
9
GND
-
IN-R
11
+
1
IN-R IN-R
40
38
89
41,91
8
30~37
8
6~13
PB0 to PB7
8
14~21
8
70~77
99,100,
5
1~3
2
4,5
PE5 to PE6
8
78~85
86~88
8
94~98
8
22~29
19
18
17
16
15
14
R
P
ALC
P
R
Rec
Nor/Cro
Amp(L)
& Hi/Lo
Logic
Rec
Amp(R)
R
P
Logic
Rejection
A/B
Logic
Rec/PB
6
7
8
9
10
11
VSS
3
4
OUT-L
8
IN-L
10
IN-R
2
OUT-R
6
GRUNDIG Service
UMS 25
PA0 to PA7
PC0 to PC7
PD0 to PD7
PE0 to PE4
PF0 to PF7
PG0 to PG7
PH0 to PH7
13
Ripple
12
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