Onkyo A-8780 - Page 3

BLOCK
DIAGRAM
DOH. D912
oad
Q806
ee
[POWER
INPUT SELECTOR ee)
EQUALIZER
AMP.
S2i3.
$2l2.~=«
Se
MICRO
PROCESSOR
Q95!
INDICATOR
TAPE
|
TUNER
CD
2
RELAY
PHONO@ a 30 POWER? ens “| DRIVE te
saa
©
8315
|
SELECTOR
=
@
gia
Y
eeeaees
S218
$2i6
32.36.31
|
|
(LEO)
ATL
OO-O-
23
ais
:
,
i
+B
aA
_
MIND/STBY
Ae}
="
0814.0815
es
ROTARY
ENCODER
26
MUTING
DRIVE D211~ 0218
MUTING
ef & FP
(INPUT
CDG
SELECTOR)
25
TUNER
©
4
Q807
REMOTE
AUX-1©
pee
(my
MOTOR
ie
—
7
AUX
-2©
Q802
é!
SYS
IN
BUS
LINE
SS
X80!
avenue
is
t{t.
ee
ee
]
BUS
LINE
oo4M
R|
REC
SELECTOR
Q808
y
SRY
yo
TI—=DAT.T2
22
5
PHONES
-
Omar
lo
OTOR
Pn
gol
ae?
mess,
|
Q803 : /
.
|
-
REC
©
=z
|
POWER
AMP
+B9
Seeprete
TAPE
-
|
=)
|
a
eae
RLB5!
S25!
am
Os
VOuUn
aa:
7
|
RELAY
RL25!
|
/
ae =u SURBO AMP
REC
O+(XFa]
Sr
KYSER?
G
|
C
ok
RS
os
L——_
|_|
lrrotec
TAPE-2
*
>
>
j
a
PLAY
©
618
TONE
MUTING
<>
BALANCE
ie
DIRECT
XK
Q519
Q85|
re MODE
T-)
MONITOR
ar
RELAY
fe
ee
RLOSI
F902
DRIVE
~O
one
Q25!
Qsi2
i"
252
Q8I3
+B8 (21.4V) . ?
Be
+Bl2
T902
AC
:
—B8
(-22.1V)
INPUT
F
T
ma
+B1I3
(5.7V)
+B9 (12.9V)
+BI
~
+B3(547V)
erg)
BG
CUTEENS
>
-Bl~
-B3(-53.7V)
+B12(12.7Vv
+ B5 (22.4v)
- B5(-22.3v)
AC
LINE
Q902.0904.Q906
AC
LINE
2S.
:
—~4—