Technics SU-A900DM2 - Page 16

SE-A900SM2
|
7
ee
rreaumptacrsen
+
Positive
Voltage
Line
scaagmmee
:
Negative
Voltage
Line
[———>
:
Source
Signal
Line
(Lch)
EA MAIN CIRCUIT (P.c.Board:on page 18)
Sv my
TeADOZEFPTA
28A992
pin
LOSTA
RELAY
DRIVE
REGULATOR
O721 | R551 R
A MAIGSTAT ay 16.4V 2.2K 0.4V 42> 2.2K-0. 7V gas :
a) Onn on hy Hy
2b Q502 rs
Ret
2
rSe
|
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ay
-
A677 } ASSES
6.8K 22K
R564
Q781
28D2374PQAU
REGULATOR
ae]
{C803 ©
ON3131A
OPTO-
ISOLATOR
ae
Q543 :
nei; 2SA1309AIRTA
| 47K SWITCHING ————4
—I0.0V 46.4
G
18.3V
Q603
28C3940AQSTA
MOTOR DRIVE
(8.3V OV
RV a
; ray
Q601,602,606,611,612
<=Nir
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oNe
Q605
28Ca311AIATA — aw Q601 asos = 85
OVER LOAD DET. be
Q604,605
28C3311AIATA
SWITCHING CONT.
A aes
Se er a J
Cc
6712
0.0t £701
\Q793 ms .
28C3940AQ8TA |
VIRTUAL BATTERY
D7a5
MA4140NTA
A
Ap7es
MAGIOMTA
Pr a va a ; (6) CY) ie (G)
:
|
:
-
u
,
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:
5
=
8
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:
|
av
(7%
S
4
g
= 2 §
AQ792
AQ794
+
|
28J105GRYTA
2SA1534AQATA
2
VIRTUAL BATTERY VIRTUAL BATTERY § §
{on page 9)
—~16-