Sony Walkman SRF-S84, Service Manual

Page: 6 / 14

SRF-S84
6 6
5-1. BLOCK DIAGRAMS
• Signal Path
: FM
: AM
30 11 12
16
19
L1,CT2
FM
TRACKING
27
2
23
24
14
4
L1
FM
RF
L5,CT3
AM
TRACKING
L2
FM
2ND OSC
CV1-4
TUNE
BAND
L4
VCO
ON/OFF
L4
VCC
L6,CT1
FM
FREQUENCY
COVERAGE
L6
FM
OSC
L3,CT4
AM
FREQUENCY
COVERAGE
L5
AM
FERRITED-ROD
ANTENNA
L5
AM
RF
L3
AM
OSC
L2
FM
2ND
VCC
RIPPLE
FILTER
Q1
S2-2
MIX
2
MIX
1
17
2
1
13
14
9
7
2
4
11
5
10
1
6
6
MUTE SW
POWER SW
7
FM/AM
P02 FM IF
S1
FM ST
FM MONO
AM
S2
POWER
MEGA BASS
ON
OFF
CT2 CV1
CT1 CV2
CT3 CV3
CT4 CV4
IC1
FM/AM FRONT-END,IF AMP,MPX
IC2
MEGA BASS AMP
IC3
HEADPHONE AMP
i
J1
S2
POWER
MEGA BASS
ON
OFF
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION R03)
1PC,1.5V
VCC
S1-2 S1-1
FM RF IN
FM RF
AM IN
FM/AM
AM OSC
FM 1ST OSC
FM 2ND
LOCAL
0,
π
_ 2
L-CH
IN 2
IN 1
IN 1
IN 2
OUT 1
MUTE
POWER
VCC
OUT 2
LP IN
R-CH
DET
OUT
MPX
IN
PLL VCO
S2-1
LP GAIN
OUT 2
OUT 1
DET
IN
RV1
VOLUME
w
LOCAL
OSC
AM RF
AMP
AM BPF
IF AMP
DET
FM RF
AMP
FM LPF
LIMITER
AMP
DISCRI
VCO,
MPX
AM RF
AMP
FM 1ST
OSC
FM
MIX
FM/AM
SELECT
SECTION 5
DIAGRAMS