Amplifier Section - Onkyo FR-N3X Service Manual

A
SCHEMATIC DIAGRAMS-1

AMPLIFIER SECTION

PREAMPLIFIER PC BOARD
U1
NAAF-7585
1
UJJ
UDT
UGT,UGR,UGQ
R401
R403
L
33K 15K
LINE IN
15K
R402
R
R404
33K
R415
R413
L
1M
2.2K
OUT
1M
R414
R
2.2K R416
CDR/TAPE
R417 R419
L
33K 15K
IN
15K
R418
R
33K R420
C441
J11B
104Z
2
R431 R429
2.2K 220K
OUT
220K
R432
2.2K
R430
C428
PROCESSOR
R435
R433 C429
For UXW-3.1
22 47K
IN 47K
R434
R436
C430
22
GND C442
104Z
UJJ only
P381
RI C382 223
R381 470
REMOTE
C383 223
CONTROL
R301
3
2.2K
MD-L
MD-R
R302
2.2K
4
+5VTU
5
P451A
B
R437,R438
NC NC
0 NEED
0 NEED
C401 LINE-L
NC
NC
LINE-R
C402
C407
NC
NC
C408
C409
CDR-P-L
NC
NC
CDR-P-R
C410
NJM4565M 8
3
C425
C427
1
Q421
2
NC
22/16
NC R427 100K
C423 330
330
C424
R428 100K
6
Q421
7
5
NJM4565M
4
RI
R439
J11A
+7VMD
C303
222
8
R303
3
10/16
R305 Q303
1
2.2K
Q301
2
2SD1468S
8.2K
C305
R309 820
NJM4565M
R311
39K
C307
NJM4565M
224
R310
10/16
R306
6
Q304 820
Q301
R304
7 2SD1468S
C306 8.2K
5
4
2.2K
R312
C304
100K
R338 222
-7VMD
100K
NJM2100M
4
3
R331 C327
Q323 1
Q321
2
2SD1468S 4.7K
10/16
R335 R329
6.8K
1K
R337
C325
221
220K
C329
C326
221
224
Q324
R336 R330
1K 6.8K
C328
2SD1468S R332 6
7
Q321
4.7K
10/16
5
8
NJM2100M
R343
1.5K
R252
12K
Q252
NC
NC
R251 Q251
12K
ToTUNER UNIT
R437
0
TONE
65
66
47k
67
47k
68
47k
69
47k
70
47k
71
47k
72 AVSS
73 AGND
M62433FP
74
47k
75
47k
76
47k
77
47k
78
47k
79
47k
80
TONE
R438
AGND
0
C431
C432
220/16
220/16
C434 C433
473J 473J
UJJ ONLY
+7.2V
R443
22
(1/2W)
R313
2.2K
R444
22
(1/2W)
2.2/50
R323
1K
C321
2.2/50
R324
1K
C322
R255
NC
P702B
SCHEMATIC DIAGRAMS-2
To NADG-7557(P702B)
C
10/50
Q453
C477
R461
RN1441
22K
C479
154
40
39
R451
38
8.2K
37
AVDD 36
DGND
DGND35
FVLACH
CE 34
FVDATA
DATA 33
Q451
FVCLK
CLK 32
+5VTU
DVDD 31
30
29
R452
28
8.2K
27
26
25
C480 Q454
154
RN1441
R462
22K
C478
10/50
D492
R497 R498
270 1.5K
RN2403
Q443
Q444
Q442
RN1404
RN1407
Q495
2SC2712
R496 R494
Q494
R492
2SA1162
39K 12K
4.7K
SELMUT
78M06
Q941
R943
+7.2V
O G I
47
(1/4W)
R944
-7.2V
G I
O
47
Q942
(1/4W)
79M06
MPC29M12HF
78L05
Q943
Q944
O G I O G I
CAUTION
FOR CONTINUED PROTECTION
AGAINST FIRE HAZARD, REPLACE
ONLY WITH FUSE OF SAME TYPE
A V
AND RATING INDICATED.
ATTENTION
AFIN D'ASSURER UNE PROTECTION
PERMANENTE CONTRE LES RISQUES
D'INCENDIE, REMPLACER UNIQUEMENT
A V
PAR UN FUSIBLE DE MEME TYPE
ET CALIBRATION COMME INDIQUE.
FR-N3X
D
POWER
U7
PC BOA
NAAF-755
R457
2.2K
Q491
RN1441
GND
AGND
RN1441
Q492
R458
2.2K
C
22
5V
5V
MD
GND
A+B1
PGND
A-B1
AC
SU
F
F
THIS SYMBO
THAT THE FU
FOR CONTIN
HAZARD,REP
RATING REF
CE SYMBOLE
E LENT.POU
QUE DES FU
INDIQUE LA