Read Sony SRF-M97 Service Manual online
SRF-M97
12
12
SRF-M97
•
IC Block Diagrams
– MAIN Board –
IC1
TA2154AFN-EL
– AMP Board –
IC201
TA2179FNG (EL)
•
Waveforms
– MAIN Board –
3
Q104 (Collector)
500 mV/DIV, 100
n
s/DIV
266 ns
1.4 Vp-p
2
Q103 (Collector),
Q104 (Base)
Q104 (Base)
200 mV/DIV, 100
n
s/DIV
268 ns
0.4 Vp-p
1
IC101
tg
(XOUT)
200 mV/DIV, 5
µ
s/DIV
13.3
µ
s
0.4 Vp-p
1
2
3
4
27
26
25
5
FM/TV
MIX
30
29
28
AM
MIX
24
AM
OSC
1/2
FM
OSC
TV
OSC
6
7
8
9
10
AGC
23
22
21
20
1/8 OR
1/16
FM/AM/TV
PW SW
11
12
FM
DET
LEVEL
DET
AM
DET
19
SW
13
14
15
FM MPX
18
17
16
TV
RF
RF
FM
RF
BUFFER
BUFFER
BUFFER
IF
BUFFER
FM
IF
AM
IF
AF
TV RF IN
FM RF IN
RF GND
FM MIX
AM MIX
AGC
VCC
FM IF IN
GND
AM IF IN
QUAD
DET OUT
MPX IN
LPF1
R OUT
AM RF IN
RFVCC
AM OSC
TV RF OUT
FM RF OUT
AM BYPASS
TV FM OSC
OSC OUT
MODE2
MODE1
IF REQ
IF COUNT
LPF2B
LPF2A
L OUT
1
INA
2
INB
3
VREF
4
PW SW
8
LPF
7
GND
12
MONO/ST SW
11
PW INC
10
BST OUT
9
BST NF
24
RF IN
23
VREF IN
RF & REF
22
RF OUT
13
OUTPUT SW
21
BASE
20
VCC
19
OUTA
14
AGC DET
+
–
PWA
16
OUTB
15
AGC IN
+
–
PWB
18
OUTC
17
PW GND
PWC
AGC DET
MODE SW
+
–
BST
5
PW MUTE
6
BST SW
PW SW, PW MUTE, BST SW
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