Grundig K-RCD 500, Service Manual

Page: 16 / 22

K-RCD 500
2 - 12
Schaltpläne und Platinenabbildungen / Circuit Diagrams and Layout of PCBs
GRUNDIG Service
K-RCD 500
2 - 11
Schaltpläne und Platinenabbildungen / Circuit Diagrams and Layout of PCBs
GRUNDIG Service
IC Blockdiagramme
IC Block Diagrams
IC 1 TA 8191 F
IC 2 TC 9236 F
IC 101 TMP47 C820
IC 9
µ
PD 6379 A
IC 3 BA 6209 N
IC 4 BA 6398 FB
IC 01 TC 9148
23
1 2 3 4 5 6 7 9 10 11 12 13 14
28 27 26 25 24
level shift level shift
level shift level shift
REGULATOR
DRIVER-
MUTE
D.BUF D.BUF
D.BUF
D.BUF
D.BUF D.BUF
D.BUF
8
22
VCC VCC
T.S.D
+
+ +
+
+ +
+
GND CH4-OUT
A
CH4-OUTB CH4-INA CH4-INB BIAS IN Vcc Vcc CH3-INB CH3-INA CH3-OUTB CH3-OUT
A
OP
IN(+)
OP
IN(-)
CH1-OUT
A
CH1-OUTB
CH1-INA CH1-INB
T
r-B
V
reg OUT
MUTE
GND
CH2-INB CH2-INA
CH2-OUTB
CH2-OUT
A
GND
OP-OUT
20 19 18 17 16 15 21
BA 6398 FB
R.OUT
MAIN DAC
SUB DAC
SUB DAC
MAIN DAC
L.OUT
GND
VDD
CLK
SI
LRCK
6
7
5
8
4
3
1
TIMING
GENERA
T
O
R
SHIFT
REGISTER
LA
TCH
µ
PD 6379
REF
2
8
7
5
6
Control
Logic
4
3 9
2
10
1
Fin
Rin
V
CC1
V
CC2
V
1
V
3
V
2
OUT1
GND
OUT2
BA 6209 N
HOLD / SINGLE PULSE
SIGNAL GENERATOR
DECODER
OSC DEVIDER
OUTPUT
SYNTHESIZING
CIRCUIT
KEY
INPUT
CIRCUIT
TIMING SIGNAL
GENERATING CIRCUIT
CODE BIT
SIGNAL GENERATING
CIRCUIT
16
2
1
3
4
5
6
7
8
9
10 11 12 13
14
15
XT
XT
K1
K2
K3
K4
K5
K6
T1 T2 T3 CODE
TEST
T
X OUT
V GND
DD
TC 9148 P
TC 9148 P