![background image](http://html1.mh-extra.com/html/onkyo/cr-245/cr-245_service-manual_1636569004.webp)
CR-245
SCHEMATIC DIAGRAMS - 2
SUB MICON (MAIN PCB)
A
1
2
3
4
5
B
C
D
E
F
G
H
51
55
53 54
52
25
21
22
24 23
5
1
3 2
4
71
75
73 74
72
PO
WE
R_
FA
IL
CD_SCL
MCU_IRQ_CD
EPM
CE
iBUSY
iIRPTO
HP
_D
ET
AV
_S
W2
AV
_S
W1
CD
_P
OW
ER
-H
CD
_R
ES
ET
VF
D_
PO
W
SY
S_
PO
W-
H
IP
OD
_D
ET
_C
TL
DO
CK
_I
N_
DE
T
SD
IO
SC
LK
RS
T/
MCU_RX
MCU_TX
AT3.3V
CNVSS
RST/
S3.3V
USB_EN
MC
POWER_FAIL
MD
ML
USB_SW
AT3.3V
AV_SW2
CD_SDA
CD_SCL
CD_POWER-H
AMP_RESET
AMP_SLEEPN
AMP_MUTE
AMP_ERROR_DET
MCU_IRQ_CD
IP_FAULT
IPOD_DET_CTL
IP_POW
DOCK_IN_DET
SYS_POW-H
VFD_POW
iIRPTO
HP_DET
iBUSY
EXT_AUDIO_MUTE
IPOD_PWR
CD_SDA
BUSY
M_SCLK
SDA2
SCL2
SDIO
VF
D_
CS
VFD3.3V
VFD_SDATA
VFD_SCLK
VFD_CS
VFD_RESET
REMOCON
AT3.3V
GND
MCU_RX
MCU_TX
VFD3.3V
REMOCON
SCL2
SDA2
AV
_S
W3
EX
T_
AU
DI
O_
MU
TE
VF
D_
RE
SE
T
VF
D_
SC
LK
VF
D_
SD
AT
A
IPOD_CTL_RESET
IPOD_CTL_RESET
MC
MD
IP
_P
OW
IP
OD
_P
WR
ML
CN
VS
S
USB_SW
USB_EN
IP
_F
AU
LT
AM
P_
SL
EE
PN
SCLK
HP
_M
UT
E
HP_MUTE
AMP_DET
AM
P_
DE
T
USB_POW
USB_FAULT
AM
P_
RE
SE
T
AM
P_
MU
TE
AM
P_
ER
RO
R_
DE
T
US
B_
FA
UL
T
US
B_
PO
W
S3.3V
S3.3V
AT3.3VU
SDA2
@netLa
AV_SW3
AV_SW1
AV_SW3
CD_RESET
SCL2
AT3.3V
RE
MO
CO
N
AT3.3VU
RE
SE
T/
GND
GND
RESET/
CE
EPM
BUSY
M_SCLK
IC3001
M3030SFEPGP
P9
_4
1
P9
_3
2
P9
_2
3
P9
_1
4
P9
_0
5
BY
TE
6
CN
VS
S
7
P6
_7
8
P6
_6
9
RE
SE
T#
10
XO
UT
11
VS
S
12
XI
N
13
VC
C1
14
P8
_5
15
P8
_4
16
P8
_3
17
P8
_2
18
P8
_1
19
P8
_0
20
P7
_7
21
P7
_6
22
P7
_5
23
P7
_4
24
P7
_3
25
P7_2
26
P7_1
27
P7_0
28
P6_7
29
P6_6
30
P6_5
31
P6_4
32
P6_3
33
P6_2
34
P6_1
35
P6_0
36
P5_7
37
P5_6
38
P5_5
39
P5_4
40
P5_3
41
P5_2
42
P5_1
43
P5_0
44
P4_7
45
P4_6
46
P4_5
47
P4_4
48
P4_3
49
P4_2
50
P4
_1
51
P4
_0
52
P3
_7
53
P3
_6
54
P3
_5
55
P3
_4
56
P3
_3
57
P3
_2
58
P3
_1
59
VC
C2
60
P3
_0
61
VS
S
62
P2
_7
63
P2
_6
64
P2
_5
65
P2
_4
66
P2
_3
67
P2
_2
68
P2
_1
69
P2
_0
70
P1
_7
71
P1
_6
72
P1
_4
74
P1_2
76
P1_0
78
P0_7
79
P0_6
80
P0_5 81
P0_4 82
P0_3 83
P0_2 84
P0_1 85
P0_0 86
P10_7 87
P10_6
88
P1
_5
73
P1
_3
75
P1_1
77
P10_5
89
P10_4
90
P10_3
91
P10_2
92
P10_1
93
AVSS
94
P10_0
95
VREF 96
AVCC 97
P9_7 98
P9_6 99
P9_5
10
0
IC3002
R3112N291A-TR-FA
1
OUT
2
VDD
3
GND
4
NC
5
CD
C3
00
1
0.
02
7
B
16
08
50
V
C3
00
2
0.
1
B
10
05
10
V
R3
00
1
4.
7K
1
/1
6W
10
05
D3
00
1
BA
T5
4W
S
R3
00
2
10
0K
1
/1
6W
10
05
C3
00
3
22
P
CH
10
05
50
V
C3
00
4
22
P
CH
10
05
50
V
X3001
32.768KHz
R3
00
5
4.
7K
1
/1
6W
10
05
W8
08
C3
00
5
8P
C
H
10
05
50
V
C3
00
6
7P
C
H
10
05
50
V
X3002
16MHz
R3
00
6
27
K
1/
16
W1
00
5
R3013
10K 1/16W 1005
R3
01
4
10
K
1/
16
W
10
05
R3015
10K 1/16W 1005
R3
01
6
10
K
1/
16
W
10
05
R3017
100 1/16W 1005
R3020
100 1/16W 1005
R3
02
1
10
K
1/
16
W
10
05
R3
02
2
10
K
1/
16
W
10
05
R3025
10K 1/16W 1005
R3026 10K 1/16W
1005
IC
30
03
S-
24
CS
04
AF
J-
TB
-G
E
1
A0
2
A1
3
A2
4
GN
D
5
SD
A
6
SC
L
7
WP
8
VC
C
C3
00
7
0.
1
B
10
05
10
V
R3027
10K 1/16W 1005
R3028
10K 1/16W
1005
W809
R3029
22 1/16W 1005
R3030
22 1/16W 1005
R3031
10K 1/16W 1005
C3008
0.1 B
1005
10V
C3
00
9
0.
1
B
10
05
10
V
R3
03
2
10
0
1/
16
W
10
05
R3
03
3
4.
7K
1
/1
6W
10
05
R3
03
4
47
K
1/
16
W
10
05
C3
01
0
0.
01
B
10
05
25
V
R3035
100 1/16W
1005
R3036
10K 1/16W
1005
R3037
100K 1/16W
1005
R3
03
8
33
1
/1
6W
10
05
R3039
100K 1/16W
1005
R3
04
0
33
1
/1
6W
10
05
C3
01
1
5.
5V
0.
1F
B3001
FCM1608KF-102T02
B3002
FCM1608KF-102T02
B3004
FCM1608KF-102T02
C3
01
2
0.
1
B
10
05
10
V
C3
01
4
0.
1
B
10
05
10
V
C3
01
5
47
0P
C
H
10
05
50
V
R3050 10K 1/16W 1005
R3051 10K 1/16W 1005
R3
05
2
10
0K
1
/1
6W
10
05
R3
05
3
10
K
1/
16
W
10
05
R3
05
4
47
0
1/
16
W1
00
5
C3
01
6
0.
1
B
10
05
10
V
C3
02
1
47
P
CH
10
05
50
V
JG3008
JG3009
JG3010
JG3011
JG3012
JG3013
JG3014
JG3015
JG3016
JG3017
JG3018
JG3019
JG3020
JG3021
JG3022
JG3023
JG3024
JG3025
D3
00
2
UD
ZS
NP
5.
6B
D3
00
4
UD
ZS
NP
5.
6B
D3
00
5
UD
ZS
NP
5.
6B
D3
00
7
UD
ZS
NP
5.
6B
C3
02
4
47
P
CH
10
05
50
V
C3
02
6
47
P
CH
10
05
50
V
C3
02
7
47
P
CH
10
05
50
V
C3
02
9
47
P
CH
10
05
50
V
IC
30
05
34
1S
21
64
-T
BB
1
NC
2
MODE1/SPI_nSS
3
NC
4
nRESET
5
Vcc
6
NC
7
NC
8
NC
9
NC
10
NC
19
NC
13
I2C_SDA/SPI_SOMI
14
MODE0/SPI_CLK
15
NC
16
NC
17
NC
18
NC
11
Vss
20
NC
12
I2C_SCL/SPI_SIMO
R3
06
4
33
1
/1
6W
10
05
C3
01
7
47
P
CH
10
05
50
V
C3
02
2
47
P
CH
10
05
50
V
C3
01
9
47
P
CH
10
05
50
V
C3
02
0
47
P
CH
10
05
50
V
C3
02
3
47
P
CH
10
05
50
V
C3
01
8
47
P
CH
10
05
50
V
C3
01
3
0.
00
1
B
10
05
50
V
JG3004
JG3007
JG3003
JG3006
JG3005
JG3002
JG3001
W8
11
R3
04
4
4.
7K
1
/1
6W
10
05
R3045
100 1/16W
1005
R3
04
8
10
K
1/
16
W
10
05
R3
04
9
10
K
1/
16
W
10
05
GND
(1;2;3;4;5;6;7;8;9;10)
MC
(5)
MD
(5)
ML
(5)
MCU_IRQ_CD
(3)
B3005
FCM1608KF-102T02
D3
00
8
UD
ZS
NP
5.
6B
C3
03
0
47
P
CH
10
05
50
V
D3
00
9
UD
ZS
NP
5.
6B
C3
03
1
47
P
CH
10
05
50
V
R3
06
9
22
1
/1
6W
10
05
R3
07
0
22
1
/1
6W
10
05
R3
07
1
22
1
/1
6W
10
05
R3
07
2
22
1
/1
6W
10
05
R3
01
9
3.
9K
1
/1
6W
10
05
R3
01
8
3.
9K
1
/1
6W
10
05
D3
01
0
BA
T5
4W
S
D3
01
1
BA
T5
4W
S
D3
01
2
BA
T5
4W
S
R3073
22K 1/16W
1005
R3074 56K 1/16W
R3075 56K 1/16W
R3076 56K 1/16W
R3077
10K 1/16W
1005
JG3026
R3
08
0
22
K
1/
16
W
10
05
R3
07
8
39
K
1/
16
W
10
05
R3079
39K 1/16W
1005
R3081 47K 1/16W
R3082 47K 1/16W
R3083 47K 1/16W
C3
03
2
0.
1
B
10
05
10
V
C3033
0.47 B
1005
6.3V
C3034
0.47 B
1005
6.3V
R3087
10K 1/16W 1005
GND
(1;2;3;4;5;6;7;8;9;10)
R3088
10K 1/16W 1005
R3
09
1
10
0K
1
/1
6W
10
05
JG
30
27
JG
30
28
JG
30
30
JG3031
JG3032
JG3033
JG3034
JG3035
R3092
10K 1/16W 1005
R3
09
3
33
1
/1
6W
10
05
R3094
10K 1/16W
1005
CP3006
A2001WR-5A
5
GND
4
KEY_C
1
KEY_A
2
KEY_B
3
GND
CP3005
A2001WR-8A
6
GND
7
IR
8
AT+3.3V
5
VFD+3.3V
4
VFD SERIAL DATA
1
VFD RESET
2
VFD CHIP SELECT
3
VFD SHIFT CLOCK
JG3037
CP3003
04_6232_110_
6
EPM
7
CE
8
CNVSS
9
Reset/
10
DSS
5
BUSY
4
TxD
1
VCC
2
SCLK
3
RxD
JG3038
R3
09
6
33
1
/1
6W
10
05
R3
09
5
33
1
/1
6W
10
05
VFD_POW
(10)
SYS_POW-H
(9;10)
CD_POWER-H
(9)
IP_POW
(9)
POWER_FAIL
(5;9)
IP_FAULT
(9)
R3097
10K 1/16W 1005
R3098
10K 1/16W 1005
S3.3V
(5;6;7;10)
AT3.3VU
(9)
AT3.3V
(5;9;10)
VFD3.3V
(10)
AV_SW1
(6;7)
AV_SW3
(2;5;6)
AV_SW2
(6)
USB_POW
(5)
REMOCON
(3)
CD_SDA
(3)
CD_SCL
(3)
CD_RESET
(3)
HP_MUTE
(5)
AV_SW3
(2;5;6)
AMP_DET
(5)
HP_DET
(5)
AMP_ERROR_DET
(5)
EXT_AUDIO_MUTE (5)
AMP_MUTE
(5)
AMP_SLEEPN
(5)
AMP_RESET
(2;5;6;7)
SCL2
(2;5;7)
SDA2
(2;5;7)
USB_FAULT
(5)
SCL2
(2;5;7)
AMP_RESET
(2;5;6;7)
USB_SW
(7)
USB_EN
(7)
IPOD_CTL_RESET (7)
iBUSY
(7)
iIRPTO
(7)
DOCK_IN_DET
(7)
IPOD_PWR
(7)
SDA2
(2;5;7)
RST
(8)
SEN
(8)
SCLK
(8)
SDIO
(8)
IPOD_DET_CTL
(7)
R3099
10K 1/16W 1005
R3100
10K 1/16W 1005
C3
03
5
0.
1
B
10
05
10
V
C3
03
6
0.
1
B
10
05
10
V
C3037
0.01 B
1005
16V
C3
03
8
0.
01
B
10
05
16
V
C3
03
9
0.
01
B
10
05
16
V
C3
04
0
0.
01
B
10
05
16
V
C3
04
1
0.
01
B
10
05
16
V
C3
04
2
0.
01
B
10
05
16
V
( MAIN PCB )
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
FROM/TO FM TUNER
VFD
LINE
FROM/TO DISPALY PCB
for DEBUG
NC
NC
KEY_A : PLAY STOP SKIP+ SKIP-
KEY_B : POWER INPUT VOL- VOL+
KEY_C ; OPEN/CLOSE
for DEBUG
from/to MPEG
5pin --> 2pin/3pin
L=200mm / 180mm
8pin L=470mm
+-5ppm
W834/W896/W895 DEL
W875 DEL
RESET IC
Sub Micon
EE
PR
OM
I
C
W812 DEL
Sub Micon SCHEMATIC DIAGRAM
Summary of Contents for CR-245
Page 16: ...CR 245 SCHEMATIC DIAGRAMS 14 POWER POWER PCB CR 245 A 1 2 3 4 5 B C D E F G H 6 7 8 I J K...
Page 33: ...CR 245WDC SCHEMATIC DIAGRAMS 15 POWER SUPPLY POWER PCB A 1 2 3 4 5 B C D E F G H...
Page 34: ...CR 245WDC SCHEMATIC DIAGRAMS 16 OPERATION USB OPERATION PCB XX XXXX A 1 2 3 4 B C D E...