Block Diagram - Tuner Section - Sony D-F181 Service Manual

D-F180AN/F181/F400/F411/F415
Q Q
6-6. BLOCK DIAGRAM — TUNER SECTION —
3 7 6 3 1 5 1 5 0
B.P.F
FL1
L3
US,CANADIAN,E92,ARGENTINE
AM FERRITE-ROD
MODEL ONLY
ANTTENA
T U +B
Q11
DX
S20
FM
LOCAL LOCAL/DX
Q13,14
STEREO
D3
S20 MONO/ST
MONO SWITCH
EXCEPT
US,CANADIAN,E92,ARGENTINE
MODEL ONLY
V IN
DC/DC
REG
3 2 CONVERTER
V CPU+
IC7
L.P.F
T81,Q30-32
1 Q26-28
Q19,29,33
V IN REG TU +B
Q18,20
+B
IC3 +B
SWITCH
T E
L 1 3 9 4 2 2 9 6 5 1 3
SW EN2
19
• R-CH is omitted
• Signal Path
: FM
w w w
16
1 FM IF
23 FM RF FM MIX 3
L1
FM RF
24 AM RF
AM MIX 4
VCO 15
L2
FM OSC
T4
21 FM OSC
MW OSC
20 AM OSC
17 LPF1 QUAD 12
Q12,25
AM/FM
OSC
LPF2 16
11
21 20 53
COM0-3 LCD0-14
31 x 34 35 49 a o 14 5 3
. i
3 4 1 2
LCD1
LIQUID CRYSTAL
IC4
DISPLAY
EEPROM
— 33 —
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IC2
FM /AM
L OUT 14
IF/RF AMP
CF1
10.7MHz
8
FM IF
R OUT 13 R-CH
T1
AM IFT
CF2
450kHz
7
AM IF
AM IF
Q40,41
Q42 Q42
AM IF
X2 BUFFER
19kHz
Q44
FM/AM
Q50
IF AMP
Q43
X1
10.7MHz
FM IF
Q15,16
Q51
AM/FM
SWITCH
Q45,49
IF ON
CONT
Q Q
3 7 6
4 7 17 56 55 13 10
IC1
DTS µCOM
25 u 1 6 3 24
y
X1
75kHz
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2 4
8 9 9
IC3
LINE AMP
6 7
Q21,22
DBB/
XOFF
EXCEPT
AEP, UK, FRENCH,
SAUDI ARABIA
VCPU
10k
9k
S19
STEP
IC5 IC5
3 4
5
8 9
6
1 2
13
11 10
Q48 Q48
12
3 1 5 1 5 0 8 9
IC6
1 2
4
Q38
XAVLS/HOLD
SWITCH
Q47
S11-18
SW10
RADIO
FUNCTION
ON/BAND
KEY
9 51 6 54 16 15 12 8 52 11 2 1 50
m
c o
.
— 34 —
2
8 9 9
FM ANT
TU L
STEP
V IN
VCPU
VCPU+
SW EN2
TU VCPU
TU XBASS
TU GROOVE
TO (2/2)
KEY
RMKEY
RMKEY INT
SDI
2 4 9 8 2 9 9
SCK
TU REQ
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