Block Diagram - Tuner Section - Aiwa CX-J3000 Service Manual

CX-J3000/J3000M
7-2. BLOCK DIAGRAM – TUNER SECTION –
L516, TC503
MW TRACKING
CN502
LOOP
L516
ANTENNA
MW ANT
TC503
(J3000)
L505
SW2 ANT
SW2 TRACKING
D505
L504
SW1 ANT SW1
SWITCH
Q508
TC502
D506
L504, TC502
SW1 TRACKING
(J3000)
CX-J3000/J3000M
ANT501
FM/SW TELESCOPIC
ANTENNA
FM TRACKING
FM OSC
VOLTAGE
RF AMP
Q510
(J3000M)
MW SWITCH
TU +5V
Q509
OSC
SWITCH
L503
Q506
MW OSC
MW VT
VOLTAGE
SW2 SWITCH
Q507
TU +5V
OSC
SWITCH
L502
Q504
SW2 OSC
SW2 VT
VOLTAGE
D501 D502
OSC
SWITCH
L501
Q505
SW1 OSC
SW1 VT
VOLTAGE
BAND SELECT
BAND SELECT
BAND SELECT
2 FM RF-IN MIX-O 4
L512
FM RF
24 FM RF-OUT
L513
21 FM-OSC
FM VT
22 AM RF-IN
20 AM-OSC
(J3000M)
MW OSC
Q503
19
SW2 OSC
Q501
16 15 20
SW1 OSC
Q502
8 7
SWITCH
Q516
D503
SWITCH
Q511, 512
D504
SWITCH
Q515
18 18
FM/AM FRONT END,
IF AMP, EQ
IC501
L514
MW IF
CF503 10 QUAD
MW IF
CF501 CF502
BUFFER
7 FM IF-IN DET-O 16
Q514
6 AM IF-IN
MUTING
Q513
17 18
LOW-PASS
FILTER
19 18 9 12 13
PLL
IC502
1 22
X501
4.5MHz
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: FM
: AM (MW/SW)
TU-L
C
15 MPX-IN L-OUT 12
(Page 19)
R-OUT 11 R-CH
13 14
ST-IND
D
(Page 19)
10 11
TU-DO
E
DO 6
TU-DI
DI 4
TU-CLK (Page 19)
CL 5
TU-CE
CE 3