Amplifier Section - Onkyo TX-2100 Service Manual

A
SCHEMATIC DIAGRAM 2

AMPLIFIER SECTION

NAAR-5864-5
C303
10/50
PHONO
EQUALIZER
1
R301
1K
C304
R302
10/50
1K
GND
L
PHONO
2
2.5mV
R
R315
L
330 R317
1M
CD
R318
R316
1M
200mV R
330
R319
TAPE L
2.2K R321
1M
-1
R322
R320
1M
REC R
2.2K
R323
TAPE L
330 R325
1M
-1
R326
R324
1M
PLAY R
330
R327
L
TAPE
R329
2.2K
1M
-2
R330
R328
1M
REC R
2.2K
R331
TAPE L
330 R333
1M
-2
R334
3
R332
1M
PLAY R
330
4
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.
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
FOR CONTINUED PROTECTION AGAINST FIRE
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
E LENT. POUR UNE PROTECTION PERMANENTE,N'UTILISER
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
NOTE
.
IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY.
THE COMPONENTS
REPLACE ONLY WITH PART NUMBER SPECIFIED.
5
. VOLTAGE (MEASURED
WITH VOLTMETER)
. ELECTROLYTIC CAPACITORS (
) ARE IN F/WV. u
. ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030-3pF 330-33pF 331-330pF
.
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
. THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
.
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
B
Q301(1/2) NJM4558D-X
0
8
5
0
7
6
C313
4
10/50
C309
622J
C311
182J
R309 R353 R311
120K
390K
39K
R310 R354 R312
390K 120K 39K
C312
C310 182J
NJM4558D-X
622J
2
1
C314
3
Q301(2/2)
10/50
Q302
TC9273N-010
1 VSS 28
VDD
2 PHONO 27
3 CD 26
4 T1 REC 25
T1 PLAY
5 24
6 V-1 23
7 V2 REC 22
V2 PLAY
8 21
9 TUNER 20
10 T1 REC 19
T2 PLAY
11 18
12 SEL 17
13 GND STB 16
14 CL DATA 15
R349 R350
22K 22K
TO TUNER UNIT U003
C102
100/16 R102 22K
U8
R101 22K
D101
MTZJ5.1B
IS DC VOLTAGE.
(NO INPUT SIGNAL)
C
BALANCE
R391
1K
R393
250K
P102
ST ST
SD SD
TUMUT TUMUT
+12V +12V
TU-R TU-R
E E
TU-L TU-L
E E
NC
NC
NC
NC
PLL PLL
CL CL
DATA DATA
NAETC-8376-1
TREBLE BASS
Q401(2/2)
C401 8
R401
5
C407
R407
100 7
10/50
3.3K
6
10/50
4
R415 R409
100K
NJM2068L-D 100K
C405330J
R419
R405
10K 68K
C419 C417 C415 C413 R431
4.7K
102J 102J 104J 104J
D401-D404 1SS133 or 1SS270
Q401-Q402 NJM2068L-D
C416
C420 C418 C414
102J 102J 104J 104J
R432
4.7K
R420 R406
10K 68K
C406 330J R416 R410
100K
100K
OPAMP
R408
2
3.3K
C402
R402 1
C408
3
100 10/50
10/50
Q401(1/2)
R641
(R642)
100K 100K
MTR+
MTR-
E
L3
E
R643
8.2K
L2
E
R644
8.2K
R2
E
R3
Q921
MPC78M12AHF
19.3
12.0
O G I
G I
O
-12.0
-20.7
Q922
79M12HF
Q923
NJM78M56FA
5.6 18.6
O G I
D922
MTZJ27D
R931
3.3K
Q924
2SA1015
-27.0
TX-2100
D
Q402(1/2)
NJM2068L-D
C411 4
R411
2
1.2K
10/50
C433
3
153J 8
C434
Q40
153J
10/50
R412
OPA
1.2K
C412
VOLUME
U2
NAETC-5865-5
D917 D918
D915 D916
C918
1000/35
C919
330/35
D915 D921
RL1N4003
OR GP104003E
D919
C926
D921 100/35
TO NADIS-8371-1 P101