Onkyo A-933, Service Manual

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A-933
SCHEMATIC DIAGRAMS-2
MICROPROCESSOR SECTION
P705
P701A
P702
Q717
2SC2712-GR
Q713
2SC2712-GR
JL901A
S701
INPUT SELECTOR
S705 TONE
DIRECT
S706
S704 S703
SPEAKERS A
S702
STANDBY/ON
D716
SPR39
(GRN)
(RED) TONE
DIRECT
D714
SPR39
(GRN)
(RED)
STANDBY
ON
JL702B JL702A
Q715
RN2402
Q714
RN2402
Q712
RN2402
Q711
RN2402
Q703
RN2403
D715
MAIN IN
D712 D713
SPEAKERS A
D711
TAPE/CDR
D710
MD
D706
PHONO
D708
CD
D707
TUNER
D709
LINE
P720
FLASH WRITER
Q704 TA7291S
GND
5 IN1
9 IN2
1 NC
4 OUT1
7 OUT2
3 VCC
2 VREF
8 VS
6
X701
8MHZ
Q701
MPD780022AGC-8BS
AVDD
35
AVREF
34
AVSS 25
IC
39
REMIN
43
K0
44
POFF
45
SYSIN
46
K0
33
K1 32
K2 31
SELECTOR 30
MODE 29
NU 28
NU 27
NU 26
SO 18
SI 19
SCK 20
NU 21
NU 22
HS 23
PROTECT I
1
1
PROTECT V
1
2
NU
13
NU
14
FUNC DATA
15
FUNC CLK
16
17 FUNC STB
17
VOLUP 57
VOLDN 58
TONE/DIRECT 59
TAPE LED 60
MD LED 61
LINE LED 62
CD LED 63
TUNER LED 64
64
PHONO LED
1
POWER LED
2
MAIN IN LED
3
DIRECT LED
4
TONE LED
5
SP-B LED
6
SP-A LED
7
STANDBY LED
8
AMUT 53
ACPOWER 54
PWM CNT 55
MAIN IN 56
SYSOUT
47
HP IN
48
SPA RL 49
SPB RL 50
HPMUT 52
NF MUTE 51
VDD0
10
VDD1 24
VSS0
9
VSS1
42
OSC1
41
OSC2
40
XT1
38
XT2
37
RESET
36
U701
GP1UM281XKVF
L701
NCH-1471
Q731
MPC29M05AHF
G
I O
Q716
RN1402
Q710
RN1402
Q709
RN1402
Q705
RN1402
Q707
RN1402
Q706
RN1402
Q708
RN1402
Q702
RN1404
D721
1SS352
D718
D703
1SS352
D705
UDZS5.1B
D704 1SS352
D702
D701
C719
100/6.3
C718
330/6.3
C715
100/6.3
C703
10/16
C701
NC
C711
1/50
C706
330/6.3
C705
0.1F
C704
100/6.3
C717
100/6.3
R727
1K
R725
1.8K
R726
1.2K
R731
330
R732 270
R766
390
R765
330
R764
330
R763
330
R753
1K
R769 10K
R770
10K
R767
180
R762
180
R760
330
R761
330
R759
330
R758
330
R754
330
R757
330
R756
330
R755
330
R768
3.3K
R740 22
R721
470
R720
390
R702
2.2 (1/2W)
R709 220
R707
1K
R708
1K
R706
1K
R705
1K
R704
220
R703
220
R738
10K
R737
220
R733
47K
R719
2.7K
R718 2.7K
R717 2.7K
R716 33K
R724
3.3K
R730
470
R722
18K
R723
6.8K
R729
560
R728
680
R736
47K
R742
1K
R741
1K
R739 220K
R743 1K
R744
1K
R745 1K
R746 220
R747
220
R752
220
R748 1K
R749
1K
R750
1K
R751
1K
R701 100
R713
47
R712
47
R711
47
R710 47
R715
NC
R714
10K
R734
4.7K
C713
104Z
C716
104Z
C702 104Z
C707 104Z
C712
104Z
C709
104Z
C710
104Z
C714
104Z
C708 104Z
PHONO
ST
FUNC CLK
FUNC DATA
PROTECT I
PROTECT V
DIRECT LED
LINE
TUNER
TAPE
TONE LED
CD MD
HS
VPP
VDD
RESET
SCK
SI
SO VOLDN
GND
VOLUP
MAIN IN
PWMCNT
AMUT
HPMUT
NFMUTE
SPBRL
SPARL
TONE/DIRECT
VOLUP
VOLDN
HPIN
FUNC CLK
FUNC DATA
VOLDN
POFF
FUNC STB
VOLUP
MAIN IN
PROTECT V
RESET
RI
PWMCNT
PROTECT I
AMUT
GND
HPMUT
HPIN
NF MUTE
RI
SPB RL
SPA RL
NAETC-8510
NADG-8505
MOTOR DRIVER
MAIN IN
SPEAKERS B
SPEAKERS B
NC
To NAPS-8506
(SD-1 : F4)
U08
MICROPROCESSOR PC BOARD
U13
SWITCH PC BOARD
To NAAF-8499 &
NAAF-8500
(SD-1 : C4)
To NAETC-8501 &
NAETC-8502
(SD-1 : E1)
To NAAF-8499 &
NAAF-8500
(SD-1 : D4)
ACPOWER
GND
+9V
POFF
MAIN IN LED
+5V
GND
K1
+4.9V
+4.9V
+4.9V +5.6V
+4.7V
+5V
+4.9V
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.
!
NOTE
<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.
A
1
2
3
4
5
B C D E F G H