Panasonic CQ-RX400U, Service Manual

Page: 9 / 37

9
5 Block Diagram
5.1. Main-1 Block
22
CQ-RX400U MAIN (1/3)
7231-02-11(1/3)
PA51
FM / AM TUNER
AT51
2 FM ANT
FM VT
FM / AM OSC
FM / AM IFC
VSM
SD / ST IND
AM VT
1
17
16 1
AM ANT
L-CH
R-CH R-CH
21 20 11 14 6
16 92 90 94
Q401
EO
AM MODE
HUB L
CD L
5
AUX L
7
15
16
3
INPUT
SEL
VOLUME
TONE
FADER
IC201
AUDIO SIGNAL PROCESSOR
XL602
32.8KHz
IC602
EEPROM
18 19
54 53
SD
A
SCLK
DO
REAR
E-VOL
I2C
L R
FRONT
L R
R-CH
Q251
RR+
RR-
R-CH
R-CH
22 4
14
16 15
14 13
12 11
10 9
8 7
6 5
4 3
2 1
STBY MUTE
FL+
FL
RL
FL-
FR+
FR-
RL+
RL-
IC271
POWER AMP
BATT
ACC
AMP CNT
CN701
CN250
12
21
23
5
3
Q366
MUTE
R-CH
Q365
MUTE
Q261
SW
Q52,602
Q55,601
TU+B FM VCC
AM VCC
POW
SW
POW
SW
80
FM MODE
SD
A
83
4
DI
3
DI/DO
SK
85
2
SK
CS
84
1
CS
59
STBY
100
AMP MUTE
99
AF MUTE
9
XT1
10
XT2
XL601
13.5KHz
12
CF1
13
CF2
SCLK
79 82
BAT DET
IC601(1/3) SYSTEM CONTROL