Table of Contents
Advertisement
CFS-W310L
5-4. SCHEMATIC DIAGRAM (TUNER, DISPLAY SECTION)
e IC BLOCK DIAGRAMS
IC1 CXA1238S
A
3
%
PLL LPF1
ANTI
&
é
Zz 8
5 ICt CXA12385 |,
uo
SG w
w
3
g 8
TELESCOPIC
:
!
el
22
=
=
2
ESE
88
ANTENNA
=
=
=
ee
we
xz
==
m=
2235
=z
=<
&
z
PILOT DET
IN
I
Pe
8
ira
ira
=
=
=
GB
=
oxio202
=
i=
ci
=
ced
a
2%
LPF2
2
=|
4
53]
[5B
BHIS-CI1I1
(8)
(2
PILOT DET
=
=
ss
4
LPF2
GRO
1.2
ST IND/
VCO CHECK
PLL LPF2
MPX REG
5
SVC203RA
Db
SVC203RA
vco
FM
C15
47—
10V
C7 2.2
50V
Sie
Ss
MUTE
&
2
19
=
>
LCH OUT
FM osc
REG
vec
RIPPLE FILTER
AGC AFC)
se
Est
we
\/
z
FM RF
RSZ
Se
\
:
3
ised
ae
ee
| Cd
CS,
R24 10k
Fs
FA
2
Q22
baa
1p CH
92
3
£
g
AM RE IN
8
acc arce (@}-t4
&°
ar
(5
283576
svcs4z
[ y !
=——
ap
é
2
0.5.40)<0.5)
2
n
'
'
=
|
GND
8
es
3
FM RF IN
é
anny,
=
=
52
R91 100K
2
Se
a9
Italian
=]
|
TUNE IND (G)
9:
0
S
ad
28C2787L
MODEL
le
|,
as
gz
Lwosc
%
FM OSC
i
3°
SWITCH
C48 4.8p CH | 0
ia
MMe
(33
Belg
3
2803576 Oe
xs
(07)
i
d
=
001 BX
FE GND
:
s
Rest
eye
z|
8
g
s
FM IF IN
3
07
PS
S
g
=
aM IF IN
FM/AM
98
'
3100)
| afer
2)
3
:
3]
FE OUT
ATCII4TS
= £98) | "SWITCHING
BAND SELECT G)
3
2
IC81
TA8148S
MW LOWPASS AMP
0%
ATCT T4ES
05,6
(
BAND 'SWITCH
£0)
0(0)«3)
| |
| {zal} cne24
cNP23 5
Note on Printed Wiring Boards:
Note on Schematic Diagram :
* O— : parts extracted from the component side.
_* All capacitors are in 1 F unless otherwise noted. pF: 4 uy F
50WV or less are not indicated except for electrolytics and
tantalums.
: Pattern on the side which is seen.
C723 0.01Y
+ All resistors are in Q and %4W or less unless otherwise
specified.
8702 188133
R718 S.ék
8703 185133
* A:
internal component.
R710 47%
.
ae | : adjustment for repair.
* Power voltage is dc 9V and fed with regulated dc power supply
8712
185133 8706
195133
L701
2208H
from external power voltage jack.
oory
Yar
* Voltage and waveforms are dc with respect to ground under
8
as
no-signal ( detuned ) conditions.
@ 33)
C714
R707
(3.7)
2208 4V
ool
100
no mark : FM
1C701
2,
711
CONSTANT , 9705
!5.2
1500-8
(
) = MW
UPB1724GB-524-1A7
oe % R708 1k
o.o2zF}
| =
CURRENT._29ko (322)
3
LCD CONTROL
MUTEZ
S
511.4)0.9)
tS
3.3 (3.6)(3.6)
(
>:LW
1.8 (2.1)¢1.9)
(19) "e708 0.1 x] ocd! Y
=
88
R713 3.9k
2.4(2.91(2.7)
Voltage variations may be noted due to normal production
1.8 (2.1) 61.9)
5 (1.50.9)
22 C701,
tolerances.
:
:
R709 3.3k
0}
i
+ Signal path.
RRR
9704
s
=
Daten ee fe
2SC2785-F
Ss
=>
iFM
sees
PLLLPF
33
=
sss
5
Es
5
S225
CNONMONND
LCD 70!
OSC AMP
S555
Denar
cer, eee) Be eee ees
LIQUID CRYSTAL DISPLAY
Advertisement
Table of Contents
