NAD 712 - Amplifier Circuit Schematics; Left and Right Channel Amplifier Stages

AMPLIFIER
MAIN INL
MAIN IN R
D805
HZ11A-2
NAD-00126 / DRUCK 6
ane R411 +38V
1N4148 , R465 R437 |
R425 Q405 22F 47F +33V
390 Boner #LINK #68 C437
? A AS a 0, TP401
R405 C445
390 ~ Q403 Q407 T an
~ D403 BC556B 4 BDI39
R435
R409 C413 390 CHASSIS
22K o! TP403
R407 eu = Tee Q415
J210L
ean
eek
Razt
RAS.
<inacena
hy
|
escasi9
2K2 TO
‘ R467
aa 0.22 CE 2W L401 HEADPHONE
C405
C407
B
_
P401
BROWN
1n5
820p
‘
CO
Om
‘
O
C433
ov E401 100n LEFT
BAG sy GO 1K8 1/2W qe cas
, TO
D801
|
F
fue,
{
D>
CE
DW
3R3
1W
100n
HEADPHONE
1N4148 se C421 C427 R457
47p 5% 3 10 1W wane
ae R427 47/25 i
R805 —-R8O1_~—Ss BOS. —_—=RBOT i om SPEAKER
R447
C47 f 1
- C439 C444
100n/
50V
=
C415
1K20.5W
rin
-33V
ile
An?
b 2,200/ 10V R449 : 7
OV ov SWE01A OV , 1K21/2W see
D412 438V
1N4148
4 R466 R438
( C438 33V
R426
a406
_22F
47
|
;
i
390 BC556B ae . aun
OY R406 \ hee iF 47n
Q404
BC556B ov
| Bas TP404
4 2SD669
27K
390
7p
5%
|}
|
cate
oad bee fey BCSOOC | 2803519
2 TO
;
oe
|
R430
pase
AN
A
L402
HEADPHONE
C406 40s | cr hs [Bo UA . P402 BLACK
a 8200 q | R432 ! E402 C434
1K8
1/2W
A-25
R464
HA
toon
see
, C436
| Rasa C422 ¢ Bee on 3.3/1W TOon es
si ae fies 418 R458 SPEAKER
D c428 == ze \ aa
B
PN,
|
2saisse
RED
1N4148 1N4148 io R428 47125 | pasg | R444 eae
Re0s
Ss
R802
R804
Ss
R808
s
¢
$9
2SB649
av
fe
:
=
|
1K2|
0.5W
me
120
C418 + C440
Goud:
.
Heine
C416
in
ce
ie
400n50V
|
ae
2,200/10V
\
V
SW801B
ov
1K21/2W
-28v
4n7
a
RESISTORS:
F
-
FUSIBLE
mor > oY ov CE - CERAMIC CASE
ov NOT SPECIFIED ARE CARBON FILM
NOTE: 1. RESISTORS, UNLESS OTHERWISE SPECIFIED, ARE 1/4 WATT.
2. ALL CERAMIC CAPACITORS, UNLESS OTHERWISE SPECIFIED; ARE 50V, 10%.
3. COMPONENTS MARKED WITH " # " ARE AH VERSION ONLY.
4. COMPONENTS MARKED WITH "A\" ARE SAFETY CRITICAL PARTS.
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