Onkyo HTR940 Service Manual page 16

A B
SCHEMATIC DIAGRAMS-1
AUDIO INPUT SECTION
To NADG-8808
(SD-2 : A3)
P304
1
P5505
P7900
R5500
330
RI
NC
P7901
R5501
R5541 C5501
330
220K 221J
R5542 C5502
R5502 220K 221J
330
P7902
R5503
R
R5543
330 C5503
220K
221K
CD IN
R5544 C5504
220K
R5504 221K
L
330
R5505
R
2 330 R5545 C5505
220K
NC
TAPE OUT
R5546 C5506
220K
R5506 NC
L
330
R5507
R
R5547 C5507
330
220K 221J
TAPE IN
R5548 C5508
R5508 220K 221J
L
330
R5509
NC
C5509
330 R5549
221J
220K
R5550 C5510
R5510 220K 221J
330
R5511
330 R5551 C5511
220K NC
R5552 C5512
3
R5512 220K NC
330
P7904
R5513
R
R5553 C5513
330
220K 221J
VIDEO 2 IN
R5554 C5514
220K 221J
R5514
L
330
R5515
R
C5515
330 R5555
NC
220K
VIDEO 1 OUT
R5556 C5516
R5516 220K NC
L
330
R5517
R
330 R5557 C5517
220K 221J
VIDEO 1 IN
R5558 C5518
220K 221J
R5518
L
330
D5704
4
10
C5704 102J
D5714
P5506
P7905
R5519
R
330 R5559 C5519
220K 221K
FRONT
R5560 C5520
220K 221K
R5520
L
330
R5521
R
330 R5561 C5521
220K 221J
SURROUND
R5562 C5522
R5522 220K 221J
L
330
D5705
C5705 102J
P7906
D5715
R5523
SUBWOOFER
R5563
330 C5523
220K
221J
5
R5564 C5524
R5524 220K 221K
CENTER
330
R5565
R5525
220K
R
330 C5525
221J
SURROUND
C5526
BACK
R5526 221J
L
R5566
330
D5706
220K
C5706 102J
D5716
C
To NADG-8809
To NADG-8808 To NADG-8808
(SD-6 : E1)
(SD-2 : A4) (SD-2 : A4)
JL5502A P303
R5575
220K
R5576
220K
R5577
47K
R5578
47K
R5579
220K
64 1 C5551 47/25
63 2
62 3
61 4
2-OUT
C5552
60 5 47/25
64 : INL9 1-C : 2
INL8 2-C
59 6 C5553 47/25
63 : INR9 1-OUT : 3
INR8 3-C
58 7
62 : INLA/RECL1 AGND : 4
INL7 3-OUT
57 8
61 : INRA/RECR1
INR7 AGND
56 9
INL6 4-OUT
C5554 47/25
55 10
INR6 4-C
47/25
54 11 C5555
INL5 Q5501 5-C
53 12
INR5 5-OUT
R2S15211FP
52 13
INL4 AGND
51 14
(Botom view)
INR4 6-OUT
15 C5556 47/25
50 SELECTOR/VOLUME
INL3 6-C
C5557 47/25
49 16
INR3 FLC
48 17
INL2 FLOUT
47 18
INR2 AGND
46 19
INL1 BASS_L1 : 21 FROUT
45 20 C5558 47/25
INR1 BASS_L2 : 22 FRC
44 21 C5559 474J
AVEE TRE_L : 23
R5585
-6.8V C5560 823J
43 41 : DGND 22
CLOCK AVCC : 24
C5561 223J
42 23 1.8K
DATA
41 24
+6.8V
+/-7V Supply
R5589 Q5503A
1K NJM4580
3
DMIXR
1
R5591
2
10K
R5590 10K R5592 R5593
C5590 330J 470 1.2K
R5594 10K
R5595 10K
C5591330J
R5596 R5597
R5598 10K
Q5503B 470 1.2K
NJM4580 5
DMIXL 7
R5599
6
10K
Downmix
NOTE
!
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
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.
D E
P302
-11.9V
R5680
R5681
R5682
-12V
Q5630A
R5630
47/50 NJM4580
220 3 C5600
100/25
C5630 1 SW_OUT
2
R5634
10K
C5632 103J
5
C5601
Q5630B 7
47/50
SBR_OUT
NJM4580 6
SBL_OUT
Subwoofer
C5602
+12V 47/50
SBR_OUT
SBL_OUT
C_OUT C5603
47/50
SR_OUT
SW_OUT1
SL_OUT
C5604
47/50
SR_OUT
SL_OUT
C5605
R_OUT
47/50
R_OUT
L_OUT L_OUT
C5606
47/50
+/-12V Supply
C5607
Q5670
47/50
C_OUT
78M12
+12V
R5674
3 1
O I
82 Z2_R
C5608
47/50
R5675
3 2 Z2_L
O I
82 R5667 C5609
Q5671
47/50
79M12
22
-12V
DAC_FR
DAC_FL
R5666
+12V
22
R5672
47 (2W)
+22V
D9002
47 (2W)
R5670
J5063
D9004
R5673
(2W)
68
-22V
R5671
68 (2W) D9001 - D9004 : RL1N4003
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
F G
NC
P301
NC
U01
AMPLIFIER PC BOARD
220K
220K
220K
Q5600 - 5607 : RN1441
J5062
NC
100
R5610 R5620
270
Q5600 Q5610 NC
Q5601 Q5611 NC
R5611
2.2k
R5621 0
R5622 0
R5612
2.2k
Q5602 Q5612 NC
Q5603 Q5613 NC
PREOUT RELAY
2.2k R5623 0
R5613
R5614 R5624 0
2.2k
R5668
Q5604 Q5614 NC 22
Q5605 Q5615 NC
R5615
2.2k R5625 0
R5626 0
R5616
2.2k RL5700
Q5606 Q5616 NC
Q5607 Q5617 NC
R5617
2.2k R5627 0
R5618
2.2k
Q5608
Q5609
R5619
NC
2.2K
GND_S1
+22V
R5660
2.2 (1W)
S1L+
D9001
To NAAF-8779 (2/2)
GND
(SD-2 : B5)
D9003
R5661
2.2 (1W)
S1L-
To NAVD-8811
(SD-5 : E2)
HT-R940
H
NAAF-8779 (1/2)
VOLH
To NAAF-8779 (2/2)
SEC1H
(SD-2 : A3)
PROTECT
NC
RN1402
Q5700
D5700
1SS133
C5707
P7908
NC
SUBWOOFER
R5531
PREOUT
100
C5708
223K
SBR
SBL
SR
To NAAF-8779 (2/2)
SL
(SD-2 : E4)
R
L
C
P6002
R L
4
3
2 FRONT SPEAKERS B
1