Onkyo TX-SR308 Service Manual page 19

A
SCHEMATIC DIAGRAMS-9
U. Port Unit Section
1
U0031
U. PORT PC BOARD BAETC-0365
2
R2848
22
3
R2849
22
JL502B
TO SD-3a C-2 BAAF-0341
TO SD-3b C-2 BCAF-0348
TO SD-3c C-2 BCAF-0355
TO Audio Input PWB
4
TX-SA578/608 TX-SR308/508/578/608 HT-R280/380/538/580/680/980/C230/C260 DTR-20.2/30.2
B
NJM4580M-D
R2809
5 AUDIO_R
7 22K
Q2804:A
R2804
6
22K
R2811
22K
C2880
101J
R2830 1M
C2881
101J
R2810
22K
R2805
2
1 22K
Q2804:B
R2808
3
NJM4580M-D 22K
C D
AUDIO_R
AUDIO_L
R2800
FRU090
GND_A
1 GND_P
2 +12V
3 Z2_L
4 Z2_GND
5 Z2_R
6 GND_D
7 GND_V
8 Composite
MMPDETINT 9 DCKDET2
MMPDET 10 DCKDET1
MMPTXD 11 TX
MMPRXD
12 RX
MMPRST
13 RESET
MMPSCL 14 SCL
MMPSDA 15 SDA
BAETC-0365
E
L2800 BLM18PG181SN1D
1
GND_P
L2801 BLM18PG181SN1D
2
+12V
3
+12V
L2802 BLM18PG181SN1D 4
5
L2818 BK1608LM182-T 6
Z2_L
L2817 BK1608LM182-T 7
Z2_R
L2816 BK1608LM182-T 8
Z2_GND
L2803 BK1608LM182-T
9
L2804 BK1608LM182-T
10
L2805 BK1608LM182-T
11
L2806 BK1608LM182-T
12
L2807 BK1608LM182-T
13
L2808 BK1608LM182-T 14
15
16
L2809 BK1608LM182-T 17
L2810 BK1608LM182-T 18
L2811 BK1608LM182-T 19
L2812 BK1608LM182-T
20
L2813 BK1608LM182-T
21
L2814 BK1608LM182-T
22
L2815 BK1608LM182-T
23
24
25
26
27