Read Sony SRF-S84 (serv.man2) Service Manual online
SRF-S84
9
r
IC BLOCK DIAGRAMS
IC1 CXA1129N-T4
IC2 LA3550M-TE-L
1
2
6
8
FM/TV
RF AMP
FM/TV
MIX
FM/TV
1ST LOCAL
OSC
AFC
AM
RF AMP
OVER LOAD
AGC
MIX
1
MIX
2
PSN
1
PSN
2
AGC
AF AMP
LPF
DETUNE
DET
FM
LPF
AM
BPF
LOCAL
OSC
1/2
COUNTER
FM/TV
SELECT
FM
DISCRI
FM
LIMITTER
AMP
AM IF AMP
(FM TUN IND)
AM
DET
AGC
TUNING
IND
VCO
MUTE
SEP
CONTROL
ST.
DECORDER
INPUT
BUFF
VCO
LEVEL
CONTROL
BUFF
AMP
DC
AMP
PD
SYNC
DET
R CH
AMP
L CH
AMP
AMP
LOAD
SELECT
1/2
COUNTER
FM/AM
SELECT
M/ST.SW
ST.IND
FM/TV
30 29
25
24 23
26
28
27
22
20
3 4 5
7
9
10
11
12
13 14
15
16
17
18
19
21
FM/AM
FM/TV
38KHz
0
π
/2
FM/TV
FM/AM
19KHz
π
/2
19KHz
0
38KHz
FM IN
TV IN
NC
FM RF
GAIN ADJ
OL AGC
2ND OSC
AM OSC
TUN IND
PLL1
PLL2
VCO OSC
VCO CONT
R OUT
L OUT
ST IND
PD2
PD1
MPX IN
DET OUT
MUTE
AGC2
NC
FM IF
NC
TV OSC
FM OSC
AGC1
AM IN
NC
1
2
3
4
5
10
9
8
7
6
POWER
SWITCH
BIAS
MUTE
SWITCH
POWER
SWITCH
IN-1
PRE-GND
IN-2
REF
MUTE
SWITCH
SWITCH
OUT-1
POWER GND
OUT-2
VCC
AMP1
AMP2
1
2
3
4
5
6
7
14
13
12
11
10
9
ON/OFF
8
IN1
IN2
HP1
HP2
LP-IN
LP-GAIN
LP-OUT
OUT1
OUT2
DET-IN
DET-OUT
REF
VCC
GND
IC3 LA4535M-TE-L
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