Display Section - Onkyo TX-SR875 Service Manual
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Also See for TX-SR875:
- Service manual (27 pages) ,
- Firmware update (3 pages) ,
- Instruction manual (120 pages)
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A
SCHEMATIC DIAGRAM-13 (SD-13)
DISPLAY SECTION
1
<Note>
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.
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 (
) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF, 330- 33pF, 331- 330pF, 333- 0.033uF
2
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.
NAETC-9090
U38
FRONT OPT PC BOARD
3
DIGITAL
AUDIO
VIDEO
AUX 2 INPUT
(FRONT)
S VIDEO
4
SETUP MIC
5
B
!
ARE CRITICAL FOR SAFETY.
IS DC VOLTAGE.(NO INPUT SIGNAL).
U7520
JL7560A
R7520
1
IN
1
220
L7520
+5.0V
3
2
VCC
3
022K
2
GND
TORX177L
R7521
330
R7522
330
R7523
75
P7530
5
4
022K
2
3
L7530
7
R7531
100
8
1
R7561
+3.3V
100
3
2
1
R7560 1K
U7560
NJL34H380A
C
NADIS-9085
U33
DISPLAY PC BOARD
JL9303A
1
FLAC1
FLAC1
2
FLAC2
3 -VP
4
+3.3VMPU
FLAC2
+3.3VMPU
-VP
*
40
DIGSDO
39
DIGCLK
38
FLD1CS
37
FLD2CS
36
FLDRST
35
KEY0
34
KEY1
33
KEY2
32
KEY3
31
LEDLATCH
30
KEYINT1
29
+3.3VST
28
+3.3VMPU
27
GNDDG
26
VOLA
25
VOLB
24
LEDZ3
23
LEDSTBY
22
LEDREADY
21
LEDZ2
20
LEDPURE
19
OPTF
18
REMIN
+5VMPU
17
16
MICDET
15
MICMUTE
14
MIC
13
AUX2_L
12
GNDAUX2
11
AUX2_R
10
+15VA
9
-15VA
8
GNDVD
7
AUX2CV_IN
6
AUX2SY_IN
5
AUX2SC_IN
4
IRINA1
3
IRINA2
2
IRINB1
1
IRINB2
P7501B
JL7560B
1
2
3
NE5532APSR
Q7520
6
C7539
7
:B
10/35
5
3
1
C7540
:A
2
10/35
+14.4V
C7535
R7532
330
10/35
-14.4V
C7537
330J
R7537
33K
2
R7538
R7539
220
220
1
:A
3
C7538
10/35
5
7
:B
6
Q7530
NJM4580M-D
TX-SR875
D
-VP
P3
49
P2
50
SEG1
P1
51
32
49:SEG2
SEG0
+3.3VMPU
52
VCC2
53
DIG15/SEG39
54
DIG14/SEG38
55
DIG13/SEG37
GNDDG
56
Q7502
DIG12/SEG36
57
DIG11
58
M66005-0001
DIG10
59
DIG9
60
FL DRIVER
DIG8
61
DIG7
62
64:DIG4
DIG6
63
DIG5
64
C7519
104Z
+3.3VST
KEYINT1
KEY0_1
GNDDG
KEY1
R7621
270
GNDDG
KEY2
R7631
270
GNDDG
KEY3
R7641
270
GNDDG
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