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A-711/711L
12
Function of components
Audio unit (X09-3142-71)
Components
CIRCUIT DESCRIPTION
Use/Function
NJM2058D.
Surround
t
Operation/Condition
Surround
buffer
NJM2058D
Headphone amplifier, Super woof-
er buffer, VR detecting comparator
TC9215P
L.------—~
Surround
selector
IC2 (1/4) (2/4) headphone amplifier, C2 (3/4) super-woofer
buffer,
1C2 (4/4) comparator
Surround is turned ON/OFF with the pin No. 23 of C6
<x05>.
H:.ON,
L: OFF
Mute
MUTE
is turned ON/OFF with the pin.No. 13 of IC6 <X05>.
H: ON, L: OFF
e
BPC1237HA
Protection
TA8409S
Main volume
drive
MAIN VOL. is turned DOWN/UP
with the pin Nos. 6 and 7 of
IC6 <X05>.
TA8409S
N.B.C. volume drive
N.B.C. VOL is turned DOWN/UP
with the pin Nos. 10 and 11
of C6 <X05>.
2#PC7915HF
~.15V stabilizing power
source
-terminal
re
|_S-te 'minal
regulator
2SA992(F,E}
=
For the tst stage A class
+
2SA992(F,E)
Q13,14
015,16
Q17,18
Q51
Q52
063
086
2SC1845(F,E)
2S022558T *5
2SB1493BT #5
28C2631(R,S)
For the 2nd stage A class
For the 2nd stage A class
Final Tr.
Finat Tr.
For detecting overloading
2SC4137F1S(V,W)
For temperature
compensation
28C2878(B)
2SA733(ANQ,P) or
2SA933S(0,R)
2SA733(A}(O,P} or
2SA933S(0,R)
28A992(F,E)
28C3666
For super woofer
muting
Super woofer muting drive
Ripple filter
For protection
AC relay drive
Q56
28C1740S(Q,R) or
2SC945(A}(Q,P}
it is turned
ON
by turning on Q52.
It is turned
ON by lowering
pin No.
9 of IC6 (x05).
It drive AC relay Ki, 2 with the pin No.14
of IC6 (X05).
Speaker relay drive
It.drives the SP relay K3 with the pin No.16
of IC6 (X05).
057
25D1266(Q,P)
+-15YV- stabilizing, power
source
iz
01,2
HSS104
or 18$133
For A class
03,4
HSS104A
or 188131
Far protection
D1
RBV-602LFA
For rectification
D1i2
HZS15S{B) or RD15JS(B)
+ 15V. stabilizing,
power
source
+
D3
HZS15S(B)
or RD15J5S(B}
For + 15V
stabilizing
power source
A class
D14,15
HZS5.1N(B2)
or
RDS. 1ES(B2}
For VR detection
D116
HZS4,7N(B)
or
RD4.7ES(B)
For muting
D17~ 22,
34,35
HSS$104
or 1SS133
For protection of static electricity
B23
HS$104 or 188133
For removing
headphone
shock
noise
024
HS$104 or 188133
For removing selector shock noise
D26,26
HSS$104 or 188133
For relay .
D27
HSS104A or 18S131
For relay
D28
HSS104A or 18$131
For detecting
protection AC
029
S5566B
For rectifying AC relay power
source
D32
HS$104
or 18$133
4
For mute
D33
HS$104
or 185133
For VR
LED
D34 or35
HSS104 or 1$$133
For protection of static electricity
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Reference number
CXP50112
=-127
+232
uPD7358ACU
CIRCUIT DESCRIPTION
Microprocessor and back-up condenser
of this unit
: 15pin connection cable (BUSY,
(DATA)
M50955
—239SP
M50941
#PD75112CW
~O71
—351SP
Initialization (reset) of each microprocessor
and test mode
A-711/711L
PDP*71 1KX32>—4
»PD75212ACW
+207
Condenser
C90
0.047F
5.5V
C136 0.047F 5V
A-771/719L
GE-711
X-711
DP-711
TUNER
AMP.
GE
DECK
;
cD
microprocessor
microprocessor
microprocessor
microprocessor
microprocessor
1C5 (X05)
ICG (X05)
1C18, 19 (X11)
1C1 (X28)
1C4 (X32)
t
Back-up
(X05)
None
(X11)
{X28}
None
C322 0.047F 6.3V
Initialization
{Reset}
insert the AC
plug to
the outlet while press-
ing the "ENTER"
key.
Pull out
the
AC
plug
from
the
outlet
and
then insert again.
Turn
on
AC
while
pressing the ENTER"
and ''MEMO"'
keys of
GE.
be
- 15 dB).
Keep
pressing
the
"CRLS"'
key for more
than three seconds per
selector
{turns
out to
Turn AC off once.
Operation
| While simultaneously pressing the selector ''CD"'
and tuning
"DOWN"
keys, insert AC plug into
the outlet and simultaneously touch off the keys.
(1) Turn
on AC
while
pressing
the
"ELAT"
key.
(2) There is also the
selector test mode.
For
details,
X-711,
Release
Test
mode
"UP/DOWN" keys.
Press
either
one
of
ten
keys,
"BAND
or
Turn
AC
on
and:
off
without
pressing
any
key.
service
manuat
There is the adjustment
test mode.
For details,
see the service manual
of DP-711.
see
the
of
Contents
(4) Turns on ail the FL tubes.
For details, see the service manuals
of various equipment.
No FL tube.
13
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