Ic Block Diagrams - Aiwa CDC-R237 Service Manual

CDC-R237

4-13. IC BLOCK DIAGRAMS

IC221 TA2153FN (SERVO Board)
RFN2 GND RFO AGCIN GVSW
30 29 28 27 26
AGC
AMP
1 2 3 4 5
VCC RFGC GMAD FNI FPI
IC201 LA6557H-TE-L (SERVO Board)
28 27 26 25 24 23
INPUT MUTE
THERMAL
SHUTDOWN
OUTPUT
LEVEL SHIFT LEVEL SHIFT
CONTROL
CH5 CH4
CH3,4,5
POWER
1 2 3 4 5 6
RFGO RFRPIN PKC RFCT BTC RFRP VRO SEB FEN
25 24 23 22 21 20 19 18 17
PEAK BOTTOM
3
I-I I-I
STATE
DET.
I I
6 7 8 9 10 11 12 13 14
TPI TNI MDI LDD SEL TEB 2VRO TEN TEO SBAD
TAB2
22 21 20 19 18 17 16 15
SIGNAL
SYSTEM
POWER
LEVEL SHIFT LEVEL SHIFT
CH3 CH2 CH1
CH1,2
POWER
7 8 9 10 11 12 13 14
TAB1
IC401 LC75421M-TLM-E (MAIN Board)
FEO
16 DI 1
CE 2
VSS
3
LROUT 4
LFOUT 5
LFIN 6
LOUT 7
LSB
8
9
LBASS2
LBASS1 10
LTRE 11
LIN 12
LSELO
15 13
AUX(L)
14
TUN(L) 15
16
L3
CD(L) 17
L1 18
IC501 TA8272H (MAIN Board)
MUTE ST-BY
22
VDD 20
VDD 6
TAB 1
30 30
CCB
INTERFACE
+
+ CONTROL LOGIC CONTROL
CIRCUIT CIRCUIT CIRCUIT
+
LVREF RVREF
+
– –
FR RR RL
4 15 14 11
19 18 17 23 24 21 9 8 7
FR(-) GND FR(+) RR(-) GND RR(+) RL(+) GND RL(-) FL(-) GND FL(-)
36 CL
35 VDD
34 RROUT
33 RFOUT
+ +
32 RFIN
31 ROUT
RSB
30
29
RBASS2
28 RBASS1
27 RTRE
26 RIN
25 RSELO
24 AUX(R)
23 TUN(R)
22
R3
21
CD(R)
20
R1
19
VREF
FL
12
10 V REF
13
PRE GND
16
AUX IN
DIAGNOSIS
25
OUT
5 2 3