Technics SA-CH750

SA-CH750
|| SCHEMATIC DIAGRAM e@TUNER CIRCUIT (Paris list on pages 33~37.)
2
FQ tuner circuit
1
For
(E,EB, EG)
A areas.
JKIOL
For (GC,GN)
areas.
| FM ANT.
JKIOL
r— Y
1 752
Al
B
JKIOI
ia AnT®Y
AMANT Kio,
c} | le
LOOP ANT
O
*
3
2
al
D
E
F
For CE,EB,GC,GN) areas.
@|Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance) with the chassis taken as standard. Therefore, there may exist
some errors in the voltage values, depending on the internal impedance of the DC circuit tester.
ZI120 FM FRONT END (RALOOO6)
i 2SK544F-A
| RF AMP
i=
lee in 5.6P ue
‘FM ane it e=s(1) Fal
ee 1 ifr °
ee ah IRIS 3
(2) Le 7
(3)
RIO IK
wr
c
a
000:
2SC2787FLITA
FM osc
2SC2786MKTA
820K
2SC2787FKTA
LISI
IaH
AM
(LW/MW)
SIGNAL
F
87.5MHz ~~ 108MHz
RI76
390
ClO
NO.OI
10K
Q103,104
2SC2785FETA
FM/AM(LW/MW)
ner FILTER
Vv cw
5V
RI38
IV
F
S22KHz~=161I1K Hz
Qigt ~ 193
2SC33IIAQSTA
LW/MW SWITCHING
15.3V
AM(LW/MW)OSC
4
FM OSC
SIGNAL
Qiol
2SC2787LTA
R104 FM IF AMP
RIO7
°
nm
mn
RIO6 | CIOS
| 470K |KIOOOP
900 | es cov
K1000P (P (ov)
i) Qiol
0
62 0.7V
at (ov)
<OVvy
RIO3
clol
NO.OI
:
nh
eas
(E,EB,GC,GN)
33
~~
(EG)
ai
16V10--- (E,EB,GC,GN)
ele A leviog tes)
—- C174
1c102
Lc7218
PLL FREQUENCY
SYNTHESIZER
Gite
SA-CH750
reece
=> : FM signal line
OOO: FM OSC signal line
AM (LW/MW) signal line
AM (LW/MW) OSC signal line
No mark: FM mode ): MW mode >: LW mode
For (EG) area.
Z120 FM FRONT END (RALOOI9)
28C2620__
2SC2787LTA
RIO9
330
POWER SUPPLY
0.7V @ Sloe
For (E,EB,GC,GN)
FM [4B] LINE ——-
820P--- (E,EB,GC,GN}
LAI830—-H
FM/AM IF AMP,DET/AM OSC,MIX/FM MPX
R120 47K
Cié
M8200P
xIOl
(456KHz)
(15.3Vy (OV
0.3V
bi02
MAI65TA
R132
10K
xo
M8200P
3.9K---(E,EB,GC,GN)
Q107, 108
2SC33IIAQSTA
BUFFER AMP
S5600P---(£,EB,GC,GN)
©1398) sa00p---(E6)
RI47 R143
470K 2.2K
IK--- (E,EB,GC,GN)
20--- (EG)
R148 R144
470K 2.2K
1K---CE,EB,GC,GN)
20--- (EG)
5600P---(E,EB,GC,GN]
8200P--- (EG)
A
B
Cc
8
A
15.3V
> wo