Technics SA-GX550 - SYSTEM BLOCK DIAGRAM OVERVIEW; Overall System Architecture and Signal Flow

SA-GX550 SA-GX550
Mi BLOCK DIAGRAM
FM ANT LAI830-H3
Z120 (FM FRONT END) Se oo ersoe
kr ee ee FM/AM IF AMP, DET/AM OSC,MIX/FM MPX
RF amp. ! Q101, 102 Rar]
Oo (ase KHz) fe cal
4 amp.
[wore H>=[oecoder F
| | ee
{Stereo drive H
(FM) beaters Seve rf trig]
a
es
aurea
|)
eer
AM(LW/MW) ANT. Coil switch
AM(LW/MW) OSC.Coi!
Z101---For CEGJ area.
Z!91---For (E, EB,G, GN) areas.
© x02
oon
For CE, EB, G, GN) areas.
Le7218
PLL FREQUENCY SYNTHESIZER
6
eee eee eee eee
| oa
Phase Reference
charge pump | divider
ee F
Swallow counter
(6, 1/17 4bit
ee
MCI4052BCP
VIDEO
VIDEO SELECTOR
G8) supply
control
0701 ~~ 704
Q351,352
TV
MONITOR (O
ouT
Video amp)
ac
IN Q701,703~705
Main power transformer
ies
TAPE/DCC
esse itd
VCR2(1N)
35
a
| ”n
STANDBY
901,902 \
!
48) |
I
O721I~ 724
0751~754
Sub power
transformer
REMOTE
CONTROL
OUT
AN6558F
Phono
EQ amp.
re
|
zt
(27)
®
8)
LA2780N
!
28
Ve
OE
DOLBY
PRO-LOGIC
SURROUND
MATRIX SIGNAL PROCESSOR
Vss Voo
Pp
Tc9214 e1002
MODE SELECT 8)
eae
rad
|
|
!
|
| €s)
| \ 16
rc
mie eatery |
| am oped?
10
|
rt 2 jz
| JLou (6)
ae |
D | UPC4570C
|
I,
20) | Buffer
°
switch
: E
[ Lever snitr | shift Is
a
See eld
TC9I63N
ficao1
|
Rh]
INPUT SELECTOR
4 5 6 7 13 12
ror a2 03 04 a6 a7 7
| MC14094BCP |
| [1c 1002 | 2 |
i] DATA CONTROL
VR901 LSE OF ck vss voo a8 a5 oy
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|
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1
I 1 @ 1
2
B 2
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4
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ray
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Lc8A012A5328 SPAY
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MICROCOMPUTER
y
AFMO®
ry 3 - Ed Fa ae oe I
ag} 8 07 NR o re o
Se ge a Ss at ee ae Sg a Se eh
34 35 | 3
a)
cF9Ol
(6MHz)
oO
—o
$946~957,
S$960~ 967,
$970~ 976, 978,
$980 v986
FL DISPLAY
REMOTE
SENSOR
KEY MATRIX
nd
FROM POWER
TRANS FORMER
D929
x
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