Read Sony D-F21 / D-F22ST / ICD-BP220 Service Manual online
D-F21/F22ST
14
14
5-3. BLOCK DIAGRAM — TUNER SECTION —
Signal path
: FM
: AM
: CD PLAY
: FM
: AM
: CD PLAY
Abbreviation
E13 : AC220-230V area in E model
E13 : AC220-230V area in E model
AM
OSC
AM
MIX
FM
MIX
FM
OSC
AM
RF-IN
RF-IN
FM
RF-IN
RF-IN
FM
RF-OUT
RF-OUT
16
15
12
11
20
22
4
6
7
10
2
21
19
24
T1
CF1
L2
L1
CT1
VCPU+2V
XDCDT
D1
D2
CT3
D3
L3
AM
FERRITE-ROD
ANTENNA
CT3,L4
AM
TRACKING
CT1,L2
FM
TRACKING
BUFFER
Q61
AM
DET
FM
DET
AF
BUFFER
DC/DC
CONVERTER
Q86
IF
BUFFER
FM
MPX
MUTE
IF CUT
R-CH
L-OUT
R-OUT
R-CH
VDD+2V
R-CH
D601
D304
D302
17
FM/AM FRONT-END,
IF DET,MPX
IC1
TU VCC
TU VCC
Q3
Q6
Q2
TU VCC
L4
CF3
IF CUT
TU VCC
TU VCC
FM OSC
AM OSC
MIX-OUT
AM
IF-IN
IF-IN
FM
IF-IN
IF-IN
DET-OUT
MPX-IN
T1
AM IF
LIN
HEADPHONE AMP
IC302
14
LOUT
8
PWRSW
MUTE
19
BEEP
ALCDET
17
PW SW
BEEP
MT SW
20
TUNER/CD
SIGNAL SELECT
IC303
8
9
12
6
11
IF OSC
AMP
Q60
LPF
Q84,85
5 – 20
1 – 4
LIQUID CRYSTAL
DISPLAY PANEL
LCD1
COM1
|
COM4
S1
|
S16
22 23
24
74
75
45
32
31
30
1
2
3
25
55
65
53
71
70
61
64
59
6
7
2
28
21
36
62 49 29
73
54
33
38
39
46
47
48
51
52
42
29
74
37
34
5
32
31
30
39
38
18
21
44
X61
75kHz
(EXCEPT F21:E13)
(F21:E13)
(EXCEPT F21:E13)
(F21:E13)
X1
10.7MHz
TU VCC
TU VCC
ST OR DX-O-CTR
XDC IN
DET-I
EO(DO1)
AM IN
FM IN
60
+B ON/OFF-O
DEST2-I
DEST1-I
DEST0-I
XOUT
CS
SK
DI
XIN
AD DC REF
EEP CS-O
EEP SK-O
EEP DO/D1-IO
XLOCAL/XMONO-DET-I
AM STEP-I
IFREQ-O
IF IN
IF-OUT
OSC-OUT
LPF2(MAX/FM)
LPF1(MONO/ST)
AM/XFM-O
TUMUTE-O
TUBEEP-O
LID OPEN
HOLD
AVLS
SWEN2_O
AMUTE_O
PWRSW
BEEP_O
RESET
XCDRESET_TU-O
CDWP_I
L/O_I
L/O_I
ACK_CD_I
CDON_O
CDON_O
(CD)SDO_O
(CD)SDI_I
TUSCK_I
HOLD_I
AVLS_I
AVLS_I
AD3_BATT_HIDC
AD_CDKEY
SDI-I-CDU
SDO-O-CDU
SCK-I-CDU
XHOLD-I-SW
XAVLS-I-SW
AD1_KEY
HIGH/BATT
TU ON-O
XL/O-I
CD ACK-I
WP_OPEN
ESP
CDON-IWP-CDU
12
10
13
14
+1.6V REG.
IC81
B+ SWITCH
Q4,5
B+ +3V
VCPU+2V
TU VCC
S813
S812
STEP
STEP
9k
10k
AVLS
S802
S801
(CD DOOR OPEN)
VCPU+2V
OPEN
AVLS
HOLD
NORM
LIMIT
HOLD
S803
OFF
ON
ESP
S804
OFF
ON
MONO
ST
R-CH
A MUTE
CD-L
CD-R
T81
D80
KEY MATRIX
S805 - 811
VOLUME
RV301
D
E
F
MAIN BOARD (2/3)
EEPROM
IC62
VCPU
TUNER PLL,
LCD DRIVER
IC61
OPEN
SYSTEM CONTROL
IC801 (2/3)
J302
i
EXCEPT
F21:E13
(F21:E13)
(
)
Q1
LOCAL
DX
(Page 13)
(Page 15)
(Page 15)
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