Technics SA-GX550 Service Manual page 20

SA-GX550
SA-GX550
DOLBY PRO-LOGIC SURROUND
FAN MOTOR
SV13206D
ee
G
LA2780N
POWER AMP (FRONT)
Q651~655
MATRIX SIGNAL PROCESSOR VOLUME
MOTOR 0507,541,543
(0542,544)
or
cau Limitter
7
: [Rich] v4
pry 7
/ MOTOR DRIVE UPC4570C
: [7 -Yyrsoi-i2 1C471 +
\etwork
| (VOLUME )
n
rh
tT
7
eae f
ea VR502 amp.
.
| | (BALANCE)
ret
1 | Racer | Abnormal
mM | @802(050!)
(Q506)
current
SRERRER
Aare
|
9908
[Ren]
fen
> i i mal racial - \ Eoaanese iL — switch ®7
control
| aa | 4 4
oa
DN ge ae ee *§t tile,
Ee eis ee re
Dual TC 1 RRC foe |
7] pee I
Let) |
ba E may |
HEADPHONES
Tr)
eT | eet | [R cnp—_—__—'
| 509
|
(Q510) 51110512)
I
!
>
G e e m e a n e h e n a h a ann a h e m am = — J
13 14 18 16 17 18
ooos Hh nm th Ct
cR
network
Qioot
7 13 12 — =O
4 a6 art
- fe a ae |
| I
LA2730
|
DOLBY B NR
SV132060
| 1C602 (1/2) |
POWER AMP (REAR)
oe
(see i
Y Control Over shoot
Noise cmp Bt suppressor
amp 4 clipper
Y i: Bae
ea | eae MS218AP
$i
VR501-4
(VOLUME )
Output OC
det.
AN6554F
Abnormal
current
det.
AN6554F
1C 1404 (1/4)
54 55 [3 g
RL603
—5
$946~957,
S960~ 967,
$970-~ 976,978,
$980~986
Level shift
SVI3206D
POWER AMP(CENTER)
MS216AP
1551 (1/2
KEY MATRIX
eee
VR501-3
(VOLUME )
Vvoo Veco 1
MS5O!IS8P )
||
.
A =] DIGITAL DELAY —————
4
r----—
42 ai
Tc92i2P
— 15a '
AGND D.GND, CF 140! | 16 ? =>
, ; Ey ee
ATTENUATOR wills 0551553
4
Notes:
conn: FM OSC SIGNAL
menep: AM (MW/LW) OSC SIGNAL
: REC OUT SIGNAL (Lch)
uzz7,p> : REAR SPEAKER
DRIVE SIGNAL (Lch)
mu : AM (MW/LW) SIGNAL
=p: FM/AF (FRONT SPEAKER
DRIVE) SIGNAL (Lch)
=< > : CENTER OUT SIGNAL
REAR
SPEAKERS
Reh
By ANS ae AN eh ed MA En es
tO 5
CENTER
SPEAKERS
_