D-F180AN/F181/F400/F411/F415
6-6. BLOCK DIAGRAM — TUNER SECTION —
— 33 —
— 34 —
34
AM/FM
OSC
B.P.F
FL1
FM RF
L1
FM OSC
L2
AM IFT
T1
ANTTENA
AM FERRITE-ROD
L3
MW OSC
T4
L.P.F
Q26-28
CONVERTER
DC/DC
T81,Q30-32
D3
V IN
AM MIX 4
1
FM IF
L OUT
7
IF/RF AMP
IC2
FM /AM
450kHz
CF2
14
R OUT 13
FM IF
6
7
LINE AMP
IC3
R-CH
3
10k
9k
2
1
REG
IC7
25
FM ANT
TU L
31
49
35
LIQUID CRYSTAL
DISPLAY
COM0-3
LCD0-14
IC4
EEPROM
3
4
1
2
14
5
3
CS
DI/DO
SK
DO
CS
DI
SK
24
X1
75kHz
XIN
XOUT
IC1
DTS
µ
COM
16
: FM
AM IF
BUFFER
FM
LOCAL/DX
Q11
MONO/ST
SWITCH
Q13,14
S20
DX
LOCAL
STEREO
MONO
S20
US,CANADIAN,E92,ARGENTINE
MODEL ONLY
T U +B
Q12,25
REG
Q19,29,33
+B
SWITCH
Q18,20
TU +B
IC3 +B
SW EN2
V IN
V CPU+
23 FM RF
24 AM RF
21 FM OSC
20 AM OSC
17 LPF1
FM MIX 3
8
10.7MHz
CF1
AM IF
Q40,41
FM/AM
IF AMP
Q44
AM IF
Q42
ST
IND
11
Q42
Q43
Q50
FM IF
Q51
QUAD 12
VCO 15
19kHz
X2
10.7MHz
X1
AM/FM
SWITCH
Q15,16
LPF2 16
IF ON
CONT
Q45,49
3
4
9
2
10
5
6
13
12
8
1
11
IC5
IC5
Q48
2
4
1
Q48
IC6
XAVLS/HOLD
SWITCH
Q38
Q47
RADIO
ON/BAND
SW10
FUNCTION
KEY
S11-18
DBB/
XOFF
Q21,22
VCPU
STEP
S19
STEP
TU VCPU
21
VCO H
20
VCO L
53
XST
4
XAM CTL
19
EQ
• Signal Path
• R-CH is omitted
7
XIF REQ
17
AM/FM IFC
56
BB1O/SDI
55
BB2O/SCKI
13
KEY/RMKEY
10
XA
VLS/XHOLD
9
A
VLS/XHOLD
51
REKEY
INT
6
L/O SW
54
XL/O TUREQ
16
TUNER SW
15
XDCDT
12
HIDC/BA
TT
8
TUON/CDWP
52
TU BEEP
11
CDON
2
MUTE
1
ACK CD
50
CE CD
XL/O
TU XAVLS
TU XHOLD
WP-XTU/AM/FM
XDCDT
TU HIDC/BATT
TU ON/CDWP
TU BEEP
CDON
TU MUTE
ACK CD
CE CD
SDI
TU REQ
SCK
RMKEY
TU GROOVE
KEY
TU XBASS
TO (2/2)
V IN
VCPU+
SW EN2
VCPU
LCD1
EXCEPT
US,CANADIAN,E92,ARGENTINE
MODEL ONLY
RMKEY INT
EXCEPT
AEP, UK, FRENCH,
SAUDI ARABIA
