Onkyo TX-SR308 Service Manual page 16

A B
SCHEMATIC DIAGRAMS-4a
AMP(Power) Section
1
BAAF-0341
U0010 AMP (IC), ASP PC BOARD
Notes
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY.
REPLACE ONLY WITH PART NUMBER SPECIFIED.
*Q6001/Q6002 Terminal Voltage
VOLTAGE(MEASUREDWITHVOLTMETER) IS DCVOLTAGE
(NO INPUT SIGNAL in HT-R340MPP)
PIN NO.
ELECTROLYTIC CAPACITORS( + )ARE IN uF/WV. Q6001/Q6002
EX)030:3pF 330:33pF 331:330pF 333:0.033uF
1 +49V
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
2 -49V
2 ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
4,5,6,7
0V
CAUTION
(1)
17,18 0V
FOR CONTINUED PROTECTION
AGAINST FIRE HAZARD, REPLACE
A V ONLY WITH FUSE OF SAME TYPE 8 -46V
AND RATING INDICATED.
9 +46V
ATTENTIION
AFIN D'ASSURER UNE PROTECTION
12 -45V
PERMANENTE CONTRE LES RISQUES
D'INCENDIE, REMPLACER UNIQUEMENT
A V PAR UN FUSIBLE DE MEME TYPE 10,11,13,14 -0.16V
ET CALIBRATION COMME INDIQUE.
(1)
15,16 -0.16V
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
FOR CONTINUED PROTECTION AGAINST FIRE FUSE
(1)N.A for TX-SR308 (Q6002)
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
RATING REFER TO THE MAKING ADJACENT TO THE SYMBOL.
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
A LENT, E POUR UNE PROTECTION PERMANENTE,N'UTILISER
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
MAIN_GND
J6259
NC
NOTE
DEL:Deletion
E6001
ADD:Addition
DC Canadian model
3
DD USA model
DF Taiwanese model
MO Saidi Arabian model
MQ Hong kong model
NF_GND
PA Australian model
PB U.K. model
PP
B_GND
MP CE(European) country model
MR Chinese model
JJ Japanese model
TX-SR308 / HT-R538
HT-R380/ HT-R280
HT-RC230
MDD MPP MMO MDD MPP MMO
MDC MMQ MDC
MDF MMR
N.M
R6501
A
220K
4
B
220K
ADD
DEL
C
R6502
N.M
D
E
Q6002 STK-442-530-E STK-443-530-E
ADD DEL
J6477
P6001 NTM-10PDML NTM-12PDML
C6901 8200u 8200u 8200u 8200u
C6902 63V 56V 63V
56V
F6901 8A
F6902 125V
C6080
C6081
C6082 102J 472J
C6083
102J 472J
C6084
C6087 DEL
5
C6088
102J 472J
C6089
R6316 DEL ADD
ADD DEL
J6455
Q6057 DEL ADD
R6322 47(1W) 22(1W)
N.M
6
*
R6902
Q6707 1K
2SC2712-GR
P950
S1H+
P951
P952
P953
FLAC1 1
N.C S1H-
FLAC2 2
P954
SEC3_1 3
SEC3_2 4
5
P955
F6901
JL952A
S1L+
NSCT-3P894
SEC2_1 1
7
P956 NC 2
SEC2_2 3
334J/50V
C6914
P957
1
1
1
P958 2
1 2 S1L-
3
3
4 4 F6902
1 P959
5 5
P6900B(BLK)
6 6
1 P960 7 7
8 8
1 P961 9 9
JL954A
BAETC-0345 JL954B
TO SD-3a J7
(BAAF-0341,Audio input Section)
U0010
TRANS TRM PC BOARD
8
BAETC-0345
TX-SR308 HT-R280/ 380/ C230
C D
AUDIO ANALOG SIGNAL
FRONT L
FRONT R
BAAF-0341
STK-443-530-E: TX-SR308,HT-R380,HT-R538
FL C FR
(with Heatsink)
Q6001
NC NC
C6122 C6121
C6120 NC
C6040 C6041
030D 030D
R6040 R6041
FL FR
R6050
120K 120K
C6042
120K R6051
030D
R6042
120K
120K
C
R6052
120K
R6204
100
(1W)
R6020 R6022 R6021
56K 56K 56K
R6205
100 C6020 C6022 C6021
471J
(1W) 471J 471J
L C R SL
Q6012 Q6011 Q6013
Q6010
2SC2240-BL 2SC2240-BL 2SC2240-BL 2SC2240-BL
2SC2240-BL
SP_GND
D_GND
P6901(RED)
SEC1H
P6901A
GND_AMP
RL691 +B1H_B
4
1
3
D5SBA20
5 2
D6901
4 1 P6911B
1
5 2
3
1
4
RL692
-B1H_B
334J/50V P6900(BLK) P6902A
C6915
E F
STK-443-530-E: HT-R380
STK-442-530-E: TX-SR308/HT-R538
SL SR
*
(with Heatsink)
SL SR
Q6002
C6123 C6124 C6127
NC NC NC
C6043 C6047
030D 030D
R6043 R6047
SL
R6053
120K 120K
C6044
120K R6057
030D R6044
120K 120K
SR
R6054
120K
R6209
100
(1W)
R6027
R6023 R6024
56K 56K 56K
R6210
C6027
100 C6023 C6024 471J
(1W)
471J 471J
L_OUT
R_OUT
C_OUT
SL_OUT
SR_OUT
SR SW
Q6014 Q6017
2SC2240-BL
C
VPRO
D VOLH
IPRO
Q6022
2SC2240-BL
R6211
33K
Q6021
2SA1163-BL
0V
TO SD-3a J4
(BAAF-0341,Audio input Section)
G H I
SPRLF
5 4 L
R6307
R6230 470 (1W)
2 3 R
15
(1W)
R6130 470
L 6 1
15 R6303
RL601
L6000
D6051 KDS4148U
3uH
C6111 103J
R6231
SPRLCS
15
C
SW 5 4
R6308
R6131
R (1W)
470
15 2 3
L6001
470 (1W)
3uH 6 1
R6232 R6304
RL602
15
1 1 D6052 KDS4148U
R6132
C SL 2 2 C6112 103J
15 L 3 3 SPRLCS
L6002 C 4 4 5 4
3uH R 5 5
SR 6 6 2 3
R6233
SW 7 7
15
6 1
R6133
SL
R6305
RL603
15
470 (1W) D6053
KDS4148U
L6003
C6113 103J
3uH
R6309
SPRLB_SPB
R6234 470 (1W)
5 4
SW
15
R6134
SR 2 3
15
(1/2W)
470 (1W) 10
L6004 6 1
3uH R6306 *
R6316
R6310 RL605
470 (1W) * J6455
D6055 KDS4148U
R6237
C6115 103J
15
R6137 SPRLF
SW 5 4
15
*
L6007
2 3
B
3uH R6327
470 (1W)
6 1
A
R6337
RL607
470 (1W)
D6057 KDS4148U
C6117 103J
*
SL/SR
Q6053 Q6055 Q6052 C Q6051
KRC105S KRC105S KRC105S KRC105S
FL/R
SW_OUT
Q6024
2SA1163-BL
0V
TX-SR308 HT-R280/ 380/ C230
J K
R6251 390 (1/2W)
R6252 390 (1/2W)
*
P6001
13
12
SL L
* 6
SR 11
R
* 5
10
C
* 4
L(SPB)
9
R(SPB)
SL
* 3
8
SR
* 2
7
SW SW
*
* 1
*
14
E
*
*
Q6057
KRC105S
*
103J
5
SW
C6071
JL603B
JL603A
HPL 1
J4315
D_GND 2
J4314
HPR 3
NOT USE
HPDET 4
5
HP_GND
HPDET
SPRLCS
SPRLB_SPB
SPRLF
VOLH
SEC1H
IPROTECT
PROTECT
U0010
THERMAL SENSER PC BOARD
BAETC-0343
BAETC-0343
C6631
NM
Q6380
LM61CIZ
1 3
G V
Q6380A
C6630
NM
TP631
JL501A
TO SD-9 K4
(BADG-0364 MPU Section)