Onkyo HTR940 Service Manual page 14

A
SCHEMATIC DIAGRAMS-1
AUDIO INPUT SECTION
1
P7900
RI
NC
P7901
P7902
R
CD IN
L
R
2
TAPE OUT
L
R
TAPE IN
L
NC
3
P7904
R
VIDEO 2 IN
L
R
VIDEO 1 OUT
L
R
VIDEO 1 IN
L
4
10
P5506
P7905
R
FRONT
L
R
SURROUND
L
P7906
SUBWOOFER
5
CENTER
R
SURROUND
BACK
L
B
To NADG-8808
(SD-2 : A3)
P304
P5505
R5500
330
R5501
R5541 C5501
330
220K 221J
R5542 C5502
R5502 220K 221J
330
R5503
R5543
C5503
330
220K
221K
R5544 C5504
220K
R5504 221K
330
R5505
330 R5545 C5505
220K NC
R5546
C5506
220K
NC
R5506
330
R5507
330 R5547 C5507
220K 221J
R5548 C5508
R5508
220K 221J
330
R5509
C5509
R5549
330
221J
220K
R5550
C5510
221J
R5510 220K
330
R5511
R5551 C5511
330
220K NC
R5552 C5512
220K NC
R5512
330
R5513
R5553
C5513
330
220K 221J
R5554
C5514
220K 221J
R5514
330
R5515
C5515
330 R5555
NC
220K
R5556 C5516
R5516 220K NC
330
R5517
R5557 C5517
330
220K 221J
R5558 C5518
220K
221J
R5518
330
D5704
C5704 102J
D5714
R5519
330 R5559 C5519
220K 221K
R5560 C5520
220K 221K
R5520
330
R5521
R5561 C5521
330
220K 221J
R5562 C5522
R5522 220K 221J
330
D5705
C5705 102J
D5715
R5523
R5563
330 C5523
220K
221J
R5564 C5524
R5524 220K 221K
330
R5565
R5525
220K
330 C5525
221J
C5526
R5526
221J
330 R5566
D5706
220K
C5706 102J
D5716
C
To NADG-8809
To NADG-8808
(SD-6 : E1)
(SD-2 : A4)
JL5502A
R5575
220K
R5576
220K
R5577
47K
R5578
47K
R5579
220K
64
63
62
61
60
INL8
59
INR8
58
INL7
57
INR7
56
INL6
55
INR6
54
INL5
53
INR5
52
INL4
51
INR4
50
INL3
49
INR3
48
INL2
47
INR2
46
INL1
45
INR1
44
AVEE
-6.8V
43
CLOCK
42
DATA
41
R5589
1K
NOTE
THE COMPONENTS IDENTIFIED BY MARK
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER)
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 (
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)
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
HT-R940
To NADG-8808
(SD-2 : A4)
P303
C5551 47/25
1
2 SBR_OUT
3
4 SBL_OUT
2-OUT
C5552 47/25
5
64 : INL9 1-C : 2
2-C
C5553 47/25
6
63 : INR9 1-OUT : 3
3-C
7
AGND : 4
62 : INLA/RECL1
3-OUT
8
61 : INRA/RECR1
AGND
9 SW_OUT1
4-OUT
C5554 47/25
10
4-C
C5555 47/25
11
Q5501 5-C
12
5-OUT
R2S15211FP
13
AGND
(Botom view) 14
6-OUT
C5556 47/25
15
SELECTOR/VOLUME
6-C
16 C5557 47/25
FLC
17
FLOUT
18
AGND
19
BASS_L1 : 21 FROUT
20 C5558 47/25
BASS_L2 : 22
FRC
C5559 474J
21
TRE_L : 23
R5585
C5560 823J
22
41 : DGND AVCC : 24
C5561 223J
23 1.8K
24
+6.8V
+/-7V Supply
Q5503A
NJM4580 3
DMIXR
1
R5591
2 DAC_FR
10K
R5590 10K R5592 R5593
C5590 330J 470 1.2K
R5594 10K
R5595 10K
C5591330J
R5596 R5597
R5598 10K
470 1.2K
Q5503B
5
NJM4580
DMIXL 7
R5599
6 DAC_FL
10K
Downmix
! ARE CRITICAL FOR SAFETY
IS DC VOLTAGE.(NO INPUT SIGNAL).
) ARE IN uF/WV.
PRINTING SIDE
D
P302
C_OUT
SR_OUT
SL_OUT
R_OUT
L_OUT
R5674
82
R5675
82 R5667
22
R5666
22
<Note
NC =
SD-Z
Locati
SD-Z