Panasonic Technics ST-CH7L - Page 10

m@ BLOCK DIAGRAM
ST-CH7L
ST-CH7L
—15—
~16—
(5 Pee ees
JK7O
FM
MONO
DISTORTION
adj.
RMI
ALSS2E
0302
c
amp
eek
FM
MPX
D302
o
9
T201,202
ANT273W
1
A)
a304
FM ANT 7; 7H ® 8
jet, coi
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sea
FM/AM
IF
AMP.
DET
tt
FM
FRONT
END
CF201
CF
202
CB)
#
RFamp
Q201,202
5!
t
3
5
7
3
13
ete
|
C201
pds
ies
GND
| I
1
|
1
=
<eqferere
|
!,
@205
BL
aVA
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y
i : n in 1
CD + Ves dt
4 | Capen ar}
|
i
ga
te
I
ees
|
aD
ee
ae
el
—<+
—<
| 12 14 6 8 sf Tr v4 16
TP3010
ib gee a
| va
! +
I 4 VR301 a |
-——-
(FM
MPX
}
18
10
ts
;
cf
i
VCO adj) | SSK
Buffer
(>
- Q303
;
OQ)
Q256
Signal
receive
detector
XIOl
CTIO!
(72MHz)
D201
z901
LM7OOI }
_
REMOTE
Spd7te3ds
Licio1)
CONTROL
~
PLL
FREQUENCY
control
SENSOR
(AM)
@B)
FM/AM
XOUT
XIN
LW
PD2
FMIN
SYNTHESIZER
Power Supply Shem AM IN
(FM) GB) Selector
Vss TB CE CL DATA
~ Fe 7 $3 94 FO
Switching
(reset)
|
907,908
KEY
MATRIX
20
|
23
24
31
21
32
10
12
bis
19
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TB
CE
SBT!
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spb
POWER
RST
MUTE
STEREO
MONO
INT
POWER
Q902~905
KEY2 DOWN
\(APRESET)
(ATUNING)
a
MNiaTIsSST
Ti
CLOCK
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)
$901 $905
| 1c901 | CLOCK IN ©
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|
2
JL
|
MICROCOMPUTER
DATA
OUTY
=
(WPRESET)
|
(MEMORY)
|
(Ww
TUNING)
|
(CONTROLLER)
DATA
Ind
—{6)
$902
$904
s906
|
|
SEGO
~
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P70
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|
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anne
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es
Se
|
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|
35
36
37
2
3
47
63
38
44
64
(BAND) | !
$903
31x
901
tt
ye v
| £ 1 tOH |
| \
| |
|
be
aa
|( SELECT) 2
S907 4
A
Q703
0701,705
T701
|
p
FL
DISPLAY
l(w SELECT) (RECALL) |
$908 soll |
oO oO |
| Da A
we < — a
(TIMER SET) (CANCEL) | (POWER)
| $909 $912
See
|
p
p
p
|
|
Note
1
SSS
=
7A
4
Le
4
1
—P—:FMSIGNAL
|
ooot> = FM OSC & D707
'AM SIGNAL |
®: AM OSC i]
Rech out
Lech out
POWER
B.CLK
B.DATA
B. GND
Ac
Ac