Read Sony ICF-S79 / ICF-S79L / ICF-S79V Service Manual online
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• Waveforms
1
IC6
@∞
(XIN)
2 Vp-p
13.3
µ
s
2
IC6
#¡
–
#¢
(COM0 – COM3)
3 Vp-p
32 ms
3
IC6
#∞
–
$•
(LCD0 – LCD13)
3 Vp-p
32 ms
4
D11 ANODE
440 ns
30 Vp-p
5
Q11-1 COLLECTOR
6 Vp-p
360 ns
• IC Block Diagrams
IC1
TA7358P (ICF-S79V only)
1
2
3
4
5
6
7
8
9
RF
AMP
REGULATOR
BIAS
MIX
OSC
RF IN
BYPASS
RF OUT
MIX
GND
MIX OUT
OSC OUT
OSC
VCC
1
2
3
4
5
6
7
8
9
10
15
14
13
12
11
FM
DISCRIMINATOR
AF POWER AMP
AM FE
FM IF
TUNING
METER
AM IF DET AGC
FM FE
23
22
21
20
24
25
19
18 17 16
29 28 27 26
30
GND
GND
AF OUT
VCC
RIPPLE
FIL
TER
AF IN
DET OUT
AFC AGC
AFC AGC
IF GND
METER
N.C
FM IF IN
AM IF IN
FM/AM BAND
SELECT
FM/AM
IF OUT
N.C
FE GND
AM RF IN
FM RF
REG OUT
FM OSC
FM RF IN
AFC
AM OSC
VOL
NF
FM DISCRI
GND
GND
IC2
CXA1019S
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