Ic Block Diagrams - Sony Walkman WM-FX277 Service Manual

WM-FX277

• IC BLOCK DIAGRAMS

IC1 TA2111F-(EL)
24 23
AM
RF AMP
FM
RF AMP
1 2
IC301 LB8115W-NA-TLM
COM
RI
S/S
PRE GND
PRE OUT (L)
PRE NF (L)
PRE OUT (R)
PRE NF (R)
PRE FWD IN (L)
PRE REV IN (L)
PRE FWD IN (R)
PRE REV IN (R)
16
22 21
20
FM
AM
OSC OSC
AM
MIX
FM
AGC
MIX
3 4 5 6
48 47 46 45 44 43
FWD/
REV
1
OSC
REF
VOLTAGE
OPERATION
DET
CURRENT
2
DET
BIAS
3
4
5
6
7
8
9
10
11
12
REF
SYS
CONT
R.F
13 14 15 16 17 18 19
19 18 16
17
Φ
AF
AMP
VCO
DIVIDER
AF BUFFER
FM
ST/MONO
MUTE
FM/AM
LEVEL
AM FM
DET
DET DET
AM IF FM IF TUN
AMP AMP
LED
7 8 9 10
42 41 40 39
PRE DRIVER
OPERATION LOGIC
PLUSE DET
SPEED
REF VOLTAGE
FOR SPEED CONTROL
DET
—
+
VREF
20 21 22 23 24
15 14 13
Φ
DECODER
ST
LED
11 12
38 37
FREQ
CARC.
36
VSP
+
35
IN
34
MVREF
33
M-GND
LOW
32
LOW BOOST SW
BOOST
31
DET OUT
30
MIX IN (L)
29
MIX IN (R)
28
H.P IN (L)
27
H.P IN (R)
26
LP.2
25
MIX OUT (R)