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ST-S444ES
1-2.
BLOCK
AM ©
eaeeees
FILTER
AMP
O60,
0602,
603,
AM SWITCHING
FM STEREO
DEMODULATION
RT20!
PILOT
CANCEL
ST-S444ES
ST-S44
:
s
SWITCH
1C202
:
MUTING
RT603
Q207 0257
CAL
TONE
Q305
SWITCHING
Q304
0201
pio!
FM IF AMP
DETECTOR
COMOPSITE
FM LF AMP
MIF AMP
BUFFER
DETECTOR
FM FRONT-END
DRIVE
SIGNAL AMP
LPFIOI
Qi01 - 104
Q05 -a106 | |
®
C103
|
0103, 0106
FO
IC103
©
~
'
|
por DO
7)
®
acc | _
SWITCHING
-
ais!
Q108
if
O15!
RTIO2
FM SWITCHING
;
MUTE
030!
9303
Bt
SWITCHING
SWITCHING
. NAR
RT252
[tie
ai!
p19 alt
ute
SEPARATION
|
ae
tJ wive
ar202
Sere
RL
AM RF ANP
AM IF AMP
SEPARATION
CONV
DET
eid
A
z
B A At ais
Smarac
IC3OILI/2)
1302/2)
|
_
i.
MUTING
|
|
D62!
D620:
cabana
FL DRIVE
Q206
Bre
METER
DRIVE
1C602
12-12, 14-16
[3] [4
_ 3810
Tuning |
+
mn fe
|
5809
[Tunine |
ane eee
S8l2
1
Ht
[5
[6] (7] [8]
S81
| TUNE
+ | | MODE
5813
sei4
'hoe
|
fem
|
BLEND |' BAND
AM
p e r
END
ak
S85
«S816
sai?
i
CAL |
[MUTING!
{SCAN
TONE
move | | READ
_ $818
[MEMORY
|
KEY
BOARD
SWITCH
|
US, CND, £2,€3
(SOME UNITS)
1C603
LED DRIVE
080! — D8I8
ho
MICRO- COMPUTER
!C605
$902
[PROGRAM
SWITCHING
FL
DRIVE
1C604
DISPLAY
DRIVE
623 , 625, 0627, Q628 ,Q63!
Q633 , 0635, 0642 , 2644, 0646
Q648 , Q650 , 0652 , 0654
MUTING
}
Q204
D615 D616
FLUORESCENT
DISPLAY
TUBE
FLO!
7-13,17,18,71,72 24-28, 4, 42-44 O58
52, 54-60,62—68,70 19-21, 23-29, 31-34, 40
i
Q62!
STATIC
ORIVE
ic801
-2
eH
VOL REG
0503
Bel
VOL REG
"IBY
Q50! 0502
B+2
15.7V
ee
VOL REG
6.4V
(3)
1C501
6v
RESET
(6)
B+I
29.5y
——{(8)
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